(19)
(11)EP 3 133 430 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
26.08.2020 Bulletin 2020/35

(21)Application number: 15780670.4

(22)Date of filing:  15.04.2015
(51)International Patent Classification (IPC): 
G02B 6/44(2006.01)
G02B 6/255(2006.01)
G02B 6/36(2006.01)
(86)International application number:
PCT/CN2015/076683
(87)International publication number:
WO 2015/158269 (22.10.2015 Gazette  2015/42)

(54)

OPTICAL CABLE SPLICE PROTECTION DEVICE AND METHOD FOR MOUNTING SAME

SPLEISSSCHUTZVORRICHTUNG FÜR OPTISCHES KABEL UND VERFAHREN ZUR MONTAGE DAVON

DISPOSITIF DE PROTECTION D'ÉPISSURE DE CÂBLE OPTIQUE ET SON PROCÉDÉ DE MONTAGE


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 15.04.2014 CN 201410150778

(43)Date of publication of application:
22.02.2017 Bulletin 2017/08

(73)Proprietor: CommScope Telecommunications (Shanghai) Co. Ltd.
Wai Gao Qiao Free Trade Zone Shanghai (CN)

(72)Inventors:
  • TONG, Zhaoyang
    Shanghai 200233 (CN)
  • XIA, Jiangzhen
    Shanghai 200233 (CN)

(74)Representative: Murgitroyd & Company 
Murgitroyd House 165-169 Scotland Street
Glasgow G5 8PL
Glasgow G5 8PL (GB)


(56)References cited: : 
EP-A1- 2 012 155
CN-A- 101 900 856
CN-U- 203 773 117
CN-Y- 2 867 366
US-A1- 2004 013 387
WO-A2-2009/045689
CN-U- 203 773 116
CN-U- 203 773 118
US-A- 6 081 644
US-B2- 7 738 761
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    FIELD OF TECHNOLOGY



    [0001] The present invention relates to a fiber optic splice protection device.

    BACKGROUND



    [0002] In the optical communication network, because of the limited length of the cable and requirement of branching and cross-connecting of the cable on the transmission line, it needs to splice the cable and protect the splice so as to ensure the splice can withstand external factors, such as changes in temperature, humidity and mechanical drawing, etc., to realize work with all weather. The usual practice is to use cable splicing device to provide conditions for splicing, branching and cross-connecting a cable and realize integrity protection for the splice. Overhead cable, straight-through connection, branch and cross-connection of a pipeline often utilize the way of cable splice device to meet the protection needs of the internet connection between a cable main trunk cable and a wiring cable network. Cable splicing devices are generally required to have features, such as high mechanical strength, good sealing performance, good corrosion resistance, convenient splice, and supporting repeatedly turned on and so on. However, there are some shortcomings in present cable splicing device, such as bulky, inconvenient operation and high cost.

    [0003] Existing fiber optic splice protection device comprises a cover and a chassis. A fixing device of a cable strength member, a slot of fiber optic splice protection jacket and a cable fastening tape are integrally formed with the chassis. Seal locking between the cover and the chassis is made by way of a seal component and a screw. Shortcoming of the existing Cable splicing device is that it is required to fix the cable strength members in the chassis one by one cable so as to make on-site installation inconvenient. At the same time, it also makes on-site installation inconvenient that the cover and the chassis are fixed by a plurality of screws. Further, in the existing fiber optic splice protection device, there is structure for managing the fiber optic jacket, resulting in the phenomenon of winding and messy of the fiber optic jacket and the fiber optic. US7738761B2 relates to an enclosure assembly for use with a fiber optic cable. US2004013387A1 relates to a fiber optic cable management apparatus and method. EP2012155A1 relates to a rack for an optical distribution frame. WO2009045689A2 relates to a splice holder for a communication socket.

    SUMMARY



    [0004] The purpose of the present invention is to solve the above-mentioned prior art problems and drawbacks of at least one aspect.

    [0005] One object of the present invention is to provide a fiber optic splice protection device, which can fix a cable to be spliced at a one-time to a chassis of a closure of a fiber optic splice protection device, so as to realize on-site rapid installation.

    [0006] Another object of the present invention is to provide a fiber optic splice protection device, a cover of the closure of which can be easily turned on repeatedly, and good sealing performance can be achieved between the cover of the closure and the chassis of the closure.

    [0007] Another object of the present invention is to provide a fiber optic splice protection device having a structure for managing the fiber optic jacket so as to avoid the phenomenon of winding and messy of the fiber optic jacket and the fiber optic.

    [0008] Another object of the present invention is to provide a fiber optic splice protection device, with simple structure, small size and low cost.

    [0009] Another object of the present invention is to provide a fiber optic splice protection device with high mechanical strength, excellent corrosion resistance.

    [0010] According to one aspect of the present invention, there is provided a fiber optic splice protection device, comprising: a closure including a cover and a chassis; and at least one cable fixer for fixing cables to be spliced to the chassis of the closure, wherein the cable fixer is a separate member separated from the chassis, and is removably mounted in the chassis of the closure; and all strength members of the cables to be spliced are previously fixed to the cable fixer before the cable fixer is mounted to the chassis of the closure.

    [0011] According to an exemplary embodiment of the present invention, each of the cable fixer comprises a strength member fixation unit for fixing the strength members of the cables to be spliced.

    [0012] According to another exemplary embodiment of the present invention, the strength member fixation unit comprises cylindrical projections and threaded fasteners. The cylindrical projections project from surface of the cable fixer, threaded bores extending along axial direction of the cylindrical projections and strength member holes penetrating through the threaded bores along radial direction of the cylindrical projections are formed on the cylindrical projections, the strength members of the cable penetrate through the strength member holes. The threaded fasteners are screwed into the threaded bores of the cylindrical projection for fixing the strength members penetrated through the strength member holes to the cylindrical projections.

    [0013] According to another exemplary embodiment of the present invention, each of the cable fixers further includes fastening strips. The fastening strips bound the outer sheath of the cable to ends of the cable fixer.

    [0014] According to another exemplary embodiment of the present invention, each of the cable fixers has an elongated body. Cable receiving grooves extending along the longitudinal direction of the elongated body are respectively formed in two ends of the elongated body. The outer sheaths of the cable are accommodated the cable receiving grooves. Necks inwardly contracted along width direction of the elongated body are respectively formed at two ends of the elongated body. The fastening strips are positioned at the necks, and bound the outer sheathes of the cables to the necks.

    [0015] According to another exemplary embodiment of the present invention, the surface of the cable receiving grooves is uneven surface so as to increase frictional holding force.

    [0016] According to another exemplary embodiment of the present invention, intermediate portion of the elongated body is a flat portion, and its height is lower than that of two ends of the elongated body, so that projected positioning edges are formed at two ends of the intermediate portion of the elongated body. The positioning edges are used for determining length of the outer sheathes of the cables fixed on the cable fixer.

    [0017] According to another exemplary embodiment of the present invention, the pair of cylindrical projection is formed at the intermediate portion of the elongated body
    According to another exemplary embodiment of the present invention, the unit is mounted to the chassis of the closure by screws.

    [0018] According to another exemplary embodiment of the present invention, a plurality of fixation holes are formed on the intermediate portion of the elongate body, threaded bores corresponding to the plurality of fixation holes are formed, respectively, in bottom surface of the chassis of the closure. The screws pass through the fixation holes of the elongated body and are screwed into the threaded bores of the chassis so as to fix the cable fixer to the chassis of the closure.

    [0019] According to another exemplary embodiment of the present invention, the strength member fixation unit comprises: a box-shaped accommodating portion and a pressing block. The box-shaped accommodating portion is formed on the surface of the cable fixer, the box-shaped accommodating portion has four walls projecting from the surface of the cable fixer, and strength member holes are formed in the end wall of the box-shaped accommodating portion, a first strength member fixation groove is formed on the bottom surface of the box-shaped accommodating portion, the strength members of the cables penetrates through the strength member holes and are received in the first strength member fixation groove. The pressing block is accommodated in the box-shaped accommodating portion and is fastened to bottom of the box-shaped accommodating portion by the screws, so as to squeeze the strength members, which penetrated through the strength member holes of the box-shaped accommodating portion, in the first strength member fixation groove. The pressing block is an integral member for squeezing and fixing the strength members of the cables to be spliced.

    [0020] According to another exemplary embodiment of the present invention, threaded bores are formed in bottom surface of the box-shaped accommodating portion, and fixing holes are formed on the pressing block, the screws pass through the fixing holes of the pressing block and are screwed into the threaded bores of the box-shaped accommodating portion, so as to fasten the pressing block to bottom of the box-shaped accommodating portion.

    [0021] According to another exemplary embodiment of the present invention, a second strength member fixation groove is also formed on the pressing block. The strength members are squeezed between the first strength member fixation groove and the second strength member fixation groove.

    [0022] According to another exemplary embodiment of the present invention, the surfaces of the first strength member fixation groove and/or the second strength member fixation groove are uneven surfaces so as to increase friction holding force for the strength members.

    [0023] According to another exemplary embodiment of the present invention, the strength member fixation unit comprises: a box-shaped accommodating portion formed on the surface of the cable fixer, the box-shaped accommodating portion has four walls projecting from the surface of the cable fixer, and strength member holes are formed in the end wall of the box-shaped accommodating portion, a first strength member fixation groove is formed on the bottom surface of the box-shaped accommodating portion, the strength members of the cables penetrates through the strength member holes and are accommodated in the first strength member fixation groove; and a pressing block, accommodated in the box-shaped accommodating portion and fastened to bottom of the box-shaped accommodating portion by the screws, so as to squeeze the strength members, which penetrated through the strength member holes of the box-shaped accommodating portions, in the first strength member fixation groove, the pressing block includes a first block and a second block, the first block and the second block are mutually pivotally connected together, and the first block is used to individually squeeze and fix the strength members of the first cable of the cables to be spliced, the second block is used to individually squeeze and fix the strength members of the second cable of the cables to be spliced.

    [0024] According to another exemplary embodiment of the present invention, threaded bores are formed in bottom surface of the box-shaped accommodating portion and fixing holes are formed on the pressing block, and the screws pass through the fixing holes of the pressing block and are screwed into the threaded bores of the box-shaped accommodating portion, so as to fasten the pressing block to bottom of the box-shaped accommodating portion.

    [0025] According to another exemplary embodiment of the present invention, a second strength member fixation groove is formed on the pressing block, the strength members are squeezed between the first strength member fixation groove and the second strength member fixation groove.

    [0026] According to another exemplary embodiment of the present invention, surfaces of the first strength member fixation groove and/or the second strength member fixation groove are uneven surfaces so as to increase friction holding force for the strength members.

    [0027] According to another exemplary embodiment of the present invention, the fiber optic splice protection device comprises a plurality of cable fixers for fixing a plurality of pairs of cables to be spliced to the chassis of the closure.

    [0028] According to another exemplary embodiment of the present invention, a method for mounting a fiber optic splice protection device is provided, comprising:

    providing a cable fixer, which is separated from a chassis of a closure of the fiber optic splice protection device,

    fixing strength members and outer sheathes of the cables to be spliced to the cable fixers;

    fixing the cable fixer, on which the cables to be spliced are previously fixed, to the chassis of the closure; and

    closing a cover of the closure to the chassis of the closure.



    [0029] According to another exemplary embodiment of the present invention, a fiber optic splice protection device is provided, comprising: a closure including a cover and a chassis; and a fiber routing management unit, mounted on the chassis of the closure, wherein the fiber routing management unit comprises: a bottom sheet; flexible sheets, which are removably mounted on top of the bottom sheet; and an elastic biasing member, mounted on the chassis of the closure, for applying elastic biasing force to the bottom sheet, wherein the bottom sheet is pressed against fiber jackets of the cables to be spliced under the action of the elastic biasing member, so as to prevent the fiber jackets from being messily wound; and wherein optical fibers of the cables to be spliced are positioned above the bottom sheet, wound along a no bending loss path defined by the flexible sheets, and orderly restrained in an appropriate location by the flexible sheets.

    [0030] According to another exemplary embodiment of the present invention, the elastic biasing member comprises a pair of torque springs, a pair of mounting shafts facing to each other are formed on one side of the bottom of the bottom sheet, and the pair of torque springs are sleeved on the pair of mounting shafts, respectively.

    [0031] According to another exemplary embodiment of the present invention, a fiber jacket slot is formed on bottom surface of the chassis of the closure; fiber jackets are placed in the fiber jacket slot and pressed under the bottom sheet.

    [0032] According to another exemplary embodiment of the present invention, the bottom sheet may be a flexible sheet-like member.

    [0033] According to another exemplary embodiment of the present invention, the fiber routing management unit further includes a flexible spacer, the flexible spacer is covered on the fiber jackets, and the bottom sheet is pressed on the flexible spacer.

    [0034] According to another exemplary embodiment of the present invention, a plurality of protruded insertion sheets are formed on upper surface of the bottom sheet; flexible sheets each comprises legs and a plurality of teeth-like portions located at upper end of the legs; insertion holes are formed in lower ends of the legs, the insertion sheets are inserted into the inserting holes, respectively, so that the flexible sheets are assembled to the bottom sheet.

    [0035] According to another exemplary embodiment of the present invention, a plurality of flexible sheets are provided at each of the bottom sheets, and teeth-like portions of adjacent two flexible sheets are alternately arranged.

    [0036] According to another exemplary embodiment of the present invention, the flexible sheets comprise a first flexible sheet and a second flexible sheets mounted at each of the bottom sheets, and the first flexible sheet and the second flexible sheet are spaced from and faced to each other.

    [0037] According to another exemplary embodiment of the present invention, the first flexible sheet is provided at a location near the side wall of the chassis of the closure, and the second flexible sheet is provided at a location near a side of the first flexible sheet far away from the side wall of the chassis.

    [0038] According to another exemplary embodiment of the present invention, a plurality of first teeth-like portions are formed on only one side of the first flexible sheet facing the second flexible sheets; and a plurality of second teeth-like portions are formed on only one side of the second flexible sheet facing the first flexible sheets.

    [0039] According to another exemplary embodiment of the present invention, a plurality of first teeth-like portions are formed on only one side of the first flexible sheet facing the second flexible sheets; and a plurality of second teeth-like portions are formed on one side of the second flexible sheet facing the first flexible sheets and the other side far away from the first flexible sheet.

    [0040] According to another exemplary embodiment of the present invention, a third flexible sheet is provided on each of the bottom sheet, the third flexible sheet is arranged at a location near the other side of the second flexible sheet, and a plurality of third teeth-like portions are formed on only one side of the third flexible sheet facing the second flexible sheet.

    [0041] According to another exemplary embodiment of the present invention, two pairs of fiber routing management units are mounted in the chassis of the closure, in which one pair of fiber routing management units are arranged in the middle location between two longitudinal ends of the chassis, and the other pair fiber routing management unit are arranged in the middle location between two lateral ends of the chassis.

    [0042] According to another exemplary embodiment of the present invention, a row of slots are formed in the middle of the chassis of the closure for holding fiber optic splice protective jackets.

    [0043] According to another exemplary embodiment of the present invention, a method for mounting a fiber optic splice protection device is provided, comprising:

    providing a cable fixer, which is separated from a chassis of a closure of the fiber optic splice protection device,

    fixing strength members and outer sheathes of the cables to be spliced to the cable fixers;

    fixing the cable fixer, on which the cables to be spliced are previously fixed, to the chassis of the closure;

    placing fiber jackets in fiber jacket slots, and pressing the fiber jackets by a bottom sheet of a fiber routing management unit; and

    closing a cover of the closure to the chassis of the closure.



    [0044] The method above further comprises the step of covering a flexible spacer on the fiber jackets before pressing the fiber jackets by the bottom sheet.

    [0045] According to another exemplary embodiment of the present invention, a fiber optic splice protection device, comprising: a closure including a cover and a chassis; wherein a circle of groove is formed on mating edge of four walls of one of the cover and the chassis, and an elastic sealing member is placed in the groove; a circle of projection is formed on mating edge of four walls of the other of the cover and the chassis; the cover is adapted to be locked on the chassis, when the cover is locked on the chassis, the projection is pressed against the elastic sealing member and embedded into the groove, so as to achieve the seal locking between the cover and the chassis.

    [0046] According to another exemplary embodiment of the present invention, the circle of groove is formed on upper mating edge of four walls of the chassis, and the circle of projection is formed on lower mating edge of four walls of the cover.

    [0047] According to another exemplary embodiment of the present invention, the cover is locked to at least one side of the chassis by a locking device.

    [0048] According to another exemplary embodiment of the present invention, the cover and one side of the chassis are pivotally connected together by a hinge, and the cover and the other side of the chassis are mutually locked together by the locking device.

    [0049] According to another exemplary embodiment of the present invention, the cover and one side of the chassis are mutually locked together by the locking device, and the cover and the other side of the chassis are mutually locked together by the locking device.

    [0050] According to another exemplary embodiment of the present invention, the locking device comprises a snap structure, and the snap structure comprising: an elastic hook formed on the cover; and a notch formed in the chassis, wherein when the elastic hook is inserted and snapped into the notch, the cover and chassis are locked together.

    [0051] According to another exemplary embodiment of the present invention, the locking device comprises a cam locking mechanism, the cam locking mechanism comprises: a snapping plate, connected to the cover; a sliding plate slidably mounted on the snapping plate and may slide along the snapping plate; a rotating circular plate rotatably mounted on the sliding plate; an eccentric cam member, connected to the rotating circular plate and offset from the center of the rotating circular plate by a predetermined distance, and the eccentric cam member is joined to a notch formed in the snapping plate; a shaft member connected to the lower end of the sliding plate; and a slot formed on the chassis, the shaft member is retained in the slot, wherein when the rotating circular plate is rotated, the eccentric cam member moves between a locked position of locking the cover to the chassis and an unlocked position of releasing the cover from chassis; wherein when the eccentric cam member moves toward the locked position, the eccentric cam member drives the sliding plate and the snapping plate to move in a direction toward each other, so as to apply a tension force to the cover and the chassis and achieve the locking between the cover and the chassis; and wherein when the eccentric cam member is moving toward the unlocked position, the eccentric cam member drives the sliding plate and the snapping plate to move in a direction far away from each other, so as to release the cover from the chassis.

    [0052] According to another exemplary embodiment of the present invention, a rotating wrench is connected to the rotating circular plate, for applying a rotational force to the rotating circular plate.

    [0053] According to another exemplary embodiment of the present invention, an insertion hole, into which a force arm tool is to be inserted, is formed in the rotating circular plate, so as to impart a rotational force to the rotating circular plate by the force arm tool.

    [0054] According to another exemplary embodiment of the present invention, the eccentric cam member has disk-shape and has a diameter smaller than that of the rotating circular plate.

    [0055] According to another exemplary embodiment of the present invention, the eccentric cam member has oval-shape with a long-axis having a length less than the diameter of the rotating circular plate.

    [0056] According to another exemplary embodiment of the present invention, a pair of rib projections are formed on side of the chassis, and the sliding plate and the snapping plate of each cam locking mechanism are located between the respective pair of projecting ribs.

    [0057] According to another exemplary embodiment of the present invention, the slot is formed on the lower end of each pair of projecting ribs; two ends of the shaft member are locked into the slot.

    [0058] According to another exemplary embodiment of the present invention, cable receiving slots are formed on the side wall of the chassis; the cables to be spliced are accommodated in the cable receiving slots.

    [0059] According to another exemplary embodiment of the present invention, the outer side wall of the chassis is formed with a holder knob.

    [0060] According to another exemplary embodiment of the present invention, a number of mutually crossing longitudinal and transverse strength ribs are formed on the outer surface of the cover.

    [0061] According to another exemplary embodiment of the present invention, a ruler is formed on the strength ribs, to provide on-site installation measurement function for measuring length.

    [0062] According to another exemplary embodiment of the present invention, a method for mounting a fiber optic splice protection device is provided, comprising:

    providing a cable fixer, which is separated from a chassis of a closure of the fiber optic splice protection device,

    fixing strength members and outer sheathes of the cables to be spliced to the cable fixer;

    fixing the cable fixer, on which the cables to be spliced are previously fixed, to the chassis of the closure;

    placing a sealing member into the groove of the chassis; and

    closing a cover of the closure to the chassis of the closure.



    [0063] The difference between the present invention and the prior art is to simplify the design structure of a fiber optic splice protection device, so that on-site splicing and protecting operation becomes easy and fast. On-site operators will strip cable until length of each part is a desired fixed length, the cable is fixed to a strength member fixation unit of the cable fixer, and then the cable is fixed to corresponding position in the cable fixer by a lashing member, and then the jacket cables are arranged chassis groove of the splice device located below a fiber routing management unit, the exposed primary coated optical fibers are inserted into fiber optic splice protective jackets, the cables are striped, cleaned, cut and then spliced, after that, the protective jackets protecting the splice of the cable are performed necessary processing (such as thermal), and then, the remain cables are accommodated in the fiber routing management unit, while the fiber optic splice protective jackets are sequentially disposed within the corresponding groove of the fiber optic splice protection device. The groove mates with the protective jacket in mechanical fitting manner, and the groove is component integrated with the chassis of the closure. At least two the fiber routing management units are installed on the chassis, with two basic functions: firstly, a restricted space formed between the fiber routing management unit and the groove of the chassis is used to place the fiber jacket/ outgoing optical fiber of the cable, and separate it from the remain fiber of the spliced portion; secondly, the fiber routing management units serves as a device of the chassis, increasing the fiber routing space of the cable and facilitating to fix the position of the cable so as to consequently place the cable in the splice device. The closure of the fiber optic splice protection device includes a cover and a chassis, a seal filled in the slot between the cover and the chassis is used to lock and seal by pressing the cover and the chassis, without some special tools are used to achieve the seal. Therefore, dependence on the profession of the works is reduced; complete protection of the splice is performed by simply operation of molting, routing and closing the optical fiber in two cables. When some spliced optical fiber need to be maintained, the closure of the cover and the chassis may be released by a simply tool, and after the maintenance required is finished, the cover may be closed again to achieve complete protection.

    [0064] Other objects and advantages of the present invention will become apparent, and can help to have a thorough understanding of the present invention by the following description of the invention with reference to the accompanying drawings made.

    BRIEF DESCRIPTION OF THE DRAWINGS



    [0065] 

    Figure 1 shows a perspective schematic view of a fiber optic fiber optic splice protection device according to an exemplary embodiment of the present invention;

    Figure 2 shows a schematic diagram of a chassis of the fiber optic splice protection device in Figure 1 and a cable fixer and a fiber routing management unit mounted on the chassis;

    Figure 3 shows a schematic perspective view of a cover of the fiber optic splice protection device;

    Figure 4 shows a perspective view of the chassis of the fiber optic splice protection device in Figure 1.

    Figure 5A shows a perspective schematic view of the cable fixer of the fiber optic splice protection device;

    Figure 5B shows a schematic view of previously fixing a strength member of the cable to be spliced and an outer sheath to the cable fixer;

    Figure 6A shows a schematic diagram for simultaneously fixing a plurality of the cable fixer of a plurality of pairs of cables to be spliced;

    Figure 6B shows a schematic view of previously fixing a strength member of the plurality of pairs of cables to be spliced and an outer sheath to the cable fixer;

    Figures 7A and 7B show schematic views of the cable fixer according to another exemplary embodiment of the present invention;

    Figure 7C shows a schematic view of fixing the strength member of the cable with the cable fixer in Figures 7A and 7B;

    Figures 8A, 8B and 8C show schematic views of the cable fixer according to other exemplary embodiment of the present invention;

    Figures 8D and 8E show schematic view of fixing the strength member of the cable with the cable fixer in Figures 8A, 8B and 8C;

    Figure 9A shows a schematic diagram of the fiber routing management unit according to one exemplary embodiment of the present invention;

    Figure 9B shows a schematic diagram of the fiber routing management unit according to another exemplary embodiment of the present invention;

    Figure 9C shows a schematic diagram of the fiber routing management unit according to other exemplary embodiment of the present invention;

    Figure 10A shows a schematic diagram of positioning the fiber routing management unit in Figure 9A on the chassis;

    Figure 10B shows a schematic diagram of the fiber routing management unit with a separate flexible pad according to other exemplary embodiment of the present invention;

    Figure 11 shows a schematic diagram of the cover and the chassis of the fiber optic splice protection device in Figure 1 closed together;

    Figure 12 shows a schematic diagram of a locking structure of the cover and the chassis of the fiber optic splice protection device according to another exemplary embodiment of the present invention;

    Figure 13A shows a schematic diagram of a locking structure of the cover and the chassis of the fiber optic splice protection device according to other exemplary embodiment of the present invention, wherein the cover and the chassis are in a locked position;

    Figure 13B shows position of the eccentric cam member when the cover and the chassis in the locked position;

    Figure 13C shows an inner side view of an cam locking mechanism when the cover and the chassis in the locked position;

    Figure 14A shows a schematic diagram of a locking structure of the cover and the chassis of the fiber optic splice protection device according to other exemplary embodiment of the present invention, wherein the cover and the chassis are in an unlocked position;

    Figure 14B shows position of the eccentric cam member when the cover and the chassis in the unlocked position;

    Figure 14C shows an inner side view of an cam locking mechanism when the cover and the chassis in the unlocked position;

    Figure 15 shows a schematic diagram of a locking structure of the cover and the chassis of the fiber optic splice protection device according to other exemplary embodiment of the present invention;

    Figure 16 shows a schematic diagram of the eccentric cam member according to other exemplary embodiment of the present invention.


    DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION



    [0066] Specific embodiments of the present invention will be further described hereinafter in detail in conjunction with the attached drawings. In the specification, the same or similar reference numerals indicate the same or similar parts. The following embodiments are intended to illustrate the present invention, but not to limit scopes of the present invention.

    [0067] According to a general concept of the present invention, there is provided a fiber optic splice protection device, comprising: a closure including a cover 100 and a chassis 200; and at least one cable fixer 300 for fixing cables to be spliced 10, 20 to the chassis 200 of the closure, wherein the cable fixer 300 is a separate member separated from the chassis 200, and is removably mounted in the chassis 200 of the closure; and all strength members of the cables to be spliced 10, 20 are previously fixed to the cable fixer 300 before the cable fixer 300 is mounted to the chassis 200 of the closure.

    [0068] Figure 1 shows a perspective schematic view of a fiber optic fiber optic splice protection device according to an exemplary embodiment of the present invention;

    [0069] As shown in Figure 1, the closure including the cover 100 and the chassis 200. At least one cable fixer 300 is mounted in the chassis 200 for fixing cables to be spliced 10, 20 to the chassis 200 of the closure.

    [0070] Figure 4 shows a perspective view of the chassis 200 of the fiber optic splice protection device in Figure 1; Figure 5A shows a perspective schematic view of the cable fixer 300 of the fiber optic splice protection device in Figure 1; Figure 5B shows a schematic view of previously fixing a strength members 11, 21 of the cable to be spliced 10, 20 and an outer sheath to the cable fixer 300.

    [0071] As shown in Figures 4, 5A and 5B, the cable fixer 300 is a separate member separated from the chassis 200, and is removably mounted in the chassis 200 of the closure. All strength members 11, 21 of the cables to be spliced 10, 20 are previously fixed to the cable fixer 300 before the cable fixer 300 is mounted to the chassis 200 of the closure. Then, as shown in Figure 2, the cable fixer 300, on which the cables to be spliced 10, 20 are previously fixed, is fixed to the chassis 200 of the closure.

    [0072] Please continue to refer to FIG. 5A and 5B, each of the cable fixers 300 comprises a strength member fixation unit for fixing the strength members 11, 21 of the cables to be spliced 10, 20.

    [0073] In the exemplary embodiment shown in Figs. 5B and FIG. 5A, the strength member fixation unit comprises cylindrical projections 311, 312 and threaded fasteners 321, 322. The cylindrical projections 311, 312 project from surface of the cable fixer 300, threaded bores 3110, 3120 extending along axial direction of the cylindrical projections 311, 312 and strength member holes 301 and 302 (shown in dashed line in FIG. 5A) penetrating through the threaded bores 3110, 3120 along radial direction of the cylindrical projections 311, 312 are formed on the cylindrical projections 311, 312, the strength members 11, 21 of the cable 10, 20 penetrate through the strength member holes 301 and 302. The threaded fasteners 321, 322 are screwed into the threaded bores 3110, 3120 of the cylindrical projection 311, 312 for fixing the strength members 11, 21 penetrated through the strength member holes 301 and 302 to the cylindrical projections 311, 312.

    [0074] In the exemplary embodiments shown in Figs. 5A and 5B, each of the cable fixers 300 further includes fastening strips 361, 362. The fastening strips 361, 362 bound the outer sheath of the cable 10, 20 to ends of the cable fixer 300.

    [0075] As shown in Figs. 5A and 5B, each of the cable fixers 300 has an elongated body. Cable receiving grooves 341, 342 extending along the longitudinal direction of the elongated body are respectively formed in two ends of the elongated body. The outer sheaths of the cable 10, 20 are accommodated in the cable receiving grooves 341, 342.

    [0076] Necks 351, 352 inwardly contracted along width direction of the elongated body are respectively formed at two ends of the elongated body. The fastening strips 361, 362 are positioned at the neck 351, 352, and bound the outer sheath of the cable 10, 20 to the neck 351, 352.

    [0077] As shown in Figure 5A, the surface of the cable receiving grooves 341, 342 is uneven surface so as to increase frictional holding force.

    [0078] As shown in FIG. 5A and FIG. 5B, intermediate portion of the elongated body is a flat portion, and its height is lower than that of two ends of the elongated body, so that projected positioning edges 3411,3421 are formed at two ends of the intermediate portion of the elongated body. The positioning edges 3411, 3421 are used for determining length of the outer sheath of the cable 10, 20 fixed on the cable fixer 300.

    [0079] As shown in Figs. 2, 4, 5A and 5B, the cable fixer 300 is mounted to the chassis 200 of the closure by screws 3311.

    [0080] As shown in Figs. 5A and 5B, a plurality of fixation holes 331 are formed on the intermediate portion of the elongate body, and as shown in FIG. 4, threaded bores 231 corresponding to a plurality of fixation holes 331 are formed on bottom surface of the chassis 200 of the closure respectively. As shown in Fig. 2, bolts 3311 pass through the fixation holes 331 of the elongate body and screw into the threaded bores 231 of the chassis 200 so as to fix the cable fixer 300 to the chassis 200 of the closure.

    [0081] Figure 6A shows a schematic diagram for simultaneously fixing a plurality of the cable fixer 300 of a plurality of pair of cables to be spliced 10, 20; Figure 6B shows a schematic view of previously fixing a strength member of the plurality of pairs of cable to be spliced 10, 20 and an outer sheath to the cable fixer 300.

    [0082] In the embodiment shown in FIG. 6A and FIG. 6B, it comprises a plurality of cable fixers 300 as shown in Figure 5A and 5B for fixing the plurality of pairs of cables to be spliced 10, 20 to the chassis 200 of the closure.

    [0083] Figures 7A and 7B show schematic views of the cable fixer 300' according to another exemplary embodiment of the present invention; Figure 7C shows a schematic view of fixing the strength members 11, 21 of the cables 10, 20 with the cable fixer 300' in Figures 7A and 7B;

    [0084] In the embodiment shown in FIGs. 7A, 7B, and 7C, a strength member fixation unit comprises: a box-shaped accommodating portion 310' and a pressing block 320'. The box-shaped accommodating portion 310' is formed on the surface of the cable fixer 300, the box-shaped accommodating portion 310' has four walls projecting from the surface of the cable fixer 300, and strength member holes 3101', 3102' are formed on the end wall of the box-shaped accommodating portion 310', a first strength member fixation groove 3111' is formed on the bottom surface of the box-shaped accommodating portion 310', the strength members 11, 21 of the cables 10, 20 penetrates through the strength member holes 3101', 3102' and is accommodated in the first strength member fixation groove 3111'. The pressing block 320' is accommodated in the box-shaped accommodating portion 310' and is fastened to bottom of the box-shaped accommodating portion 310' by the screws 3312', so as to squeeze the strength members 11, 21 penetrated through the strength member holes 3101', 3102' of the box-shaped accommodating portion 310' into the first strength member fixation groove 3111'.

    [0085] As shown in Figs. 7A, 7B and 7C, the pressing block 320' is an integral member for squeezing and fixing the cables to be spliced 10, 20 to the strength members 11, 21.

    [0086] Please continue to refer to Figs. 7A, 7B and 7C, threaded bores 3112' are formed on bottom surface of the box-shaped accommodating portion 310', and fixing holes 3212' are formed on the pressing blocks 320', screws 3312' pass through the fixing hole 3212' of the pressing blocks 320' and screw into the threaded bores 3112' of the box-shaped accommodating portion 310', so as to fasten the pressing blocks 320' to bottom of the box-shaped accommodating portion 310'.

    [0087] As shown in Figs. 7A, 7B, and 7C, a second strength member fixation groove 3211' is formed on the pressing block 320'. The strength members 11, 21 are squeezed between the first strength member fixation groove 3111' and the second strength member fixation groove 3211'.

    [0088] As shown in Figs. 7A, 7B and 7C, surfaces of the first strength member fixation groove 3111' and/or the second strength member fixation groove 3211' are uneven surfaces so as to increase friction holding force for the strength members 11, 21.

    [0089] Figures 8A, 8B and 8C show schematic views of the cable fixer 300" according to other exemplary embodiment of the present invention; Figures 8D and 8E show schematic view of fixing the strength member of the cable with the cable fixer 300" in Figures 8A, 8B and 8C;

    [0090] In the embodiment shown in FIGs. 8A, 8B, 8C, 8D and 8E, a strength member fixation unit 300" comprises: a box-shaped accommodating portion 310" and a pressing block 320". The box-shaped accommodating portion 310" is formed on the surface of the cable fixer 300, the box-shaped accommodating portion 310" has four walls projecting from the surface of the cable fixer 300", and strength member holes 3101', 3102' are formed on the end wall of the box-shaped accommodating portion 310", a first strength member fixation groove 3111" is formed on the bottom surface of the box-shaped accommodating portion 310", the strength members 11, 21 of the cables 10, 20 penetrates through the strength member holes 3101", 3102" and are accommodated in the first strength member fixation groove 3111". The pressing block 320" is accommodated in the box-shaped accommodating portion 310" and is fastened to bottom of the box-shaped accommodating portion 310" by the screw 3312", so as to squeeze the strength members 11, 21 penetrated through the strength member holes 3101", 3102" of the box-shaped accommodating portion 310" into the first strength member fixation groove 3111".

    [0091] As shown in Figs. 8A, 8B, 8C, 8D and 8E, the pressing blocks 320" includes a first block 321" and a second block 322", the first block 321" and the second block 322" are mutually pivotally connected together, and the first block 321" is used to individually squeeze and fix the strength members 11 of the first cable 10 of the cables to be spliced 10, 20, the second block 322" is used to individually squeeze and fix the strength members 21 of the second cable 20 of the cables to be spliced 10, 20,

    [0092] As shown in Figs. 8A, 8B, 8C, 8D and 8E, threaded bores 3112" are formed on bottom surface of the box-shaped accommodating portion 310", and fixing holes 3212" are formed on the pressing blocks 320", screws 3312" pass through the fixing hole 3212" of the pressing blocks 320" and are screwed into the threaded bores 3112" of the box-shaped accommodating portion 310", so as to fasten the pressing blocks 320" to bottom of the box-shaped accommodating portion 310".

    [0093] Although not shown, a second strength member fixation groove 3211" is also formed on the pressing blocks 320'. The strength members 11, 21 are squeezed between the first strength member fixation groove 3111" and the second strength member fixation groove 3211".

    [0094] In one embodiment of the present invention, the surfaces of the first strength member fixation groove 3111" and/or the second strength member fixation groove 3211" are uneven surfaces so as to increase friction holding force for the strength members 11, 21.

    [0095] According to another general concept of the present invention, there is provided a fiber optic splice protection device, comprising: a closure including a cover 100 and a chassis 200; and a fiber routing management unit 400, mounted on the chassis 200 of the closure, wherein the fiber routing management unit 400 comprises: a bottom sheet 401; flexible sheets 410, 420, which are removably mounted on top of the bottom sheet 401; and a elastic biasing member 403, mounted on the chassis 200 of the closure, for applying elastic biasing force to the bottom sheet 401, wherein the bottom sheet 401 is pressed against the fiber jackets 13, 23 of the cables to be spliced 10, 20 under the action of the elastic biasing member 403, so as to prevent the fiber jackets 13, 23 from being messily wound; and wherein optical fibers 12, 22 of the cables to be spliced 10, 20 are positioned above the bottom sheet 401, wound along a no bending loss path defined by the flexible sheets 410, 420, and restrained in an appropriate location by the flexible sheets 410, 420.

    [0096] Figure 2 shows a schematic diagram of a chassis 200 of the fiber optic splice protection device in Figure 1 and a cable fixer 300 and a fiber routing management unit 400 mounted on the chassis 200; Figure 9A shows a schematic diagram of the fiber routing management unit 400 according to one exemplary embodiment of the present invention.

    [0097] As shown in Fig. 9A, in the illustrated embodiment, a fiber routing management unit 400 mainly comprises: a bottom sheet 401; flexible sheets 410, 420, which are removably mounted on top of the bottom sheet 401; and a elastic biasing member 403, mounted on the chassis 200 of the closure, for applying elastic biasing force to the bottom sheet 401, wherein the bottom sheet 401 is pressed against the fiber jackets 13, 23 of the cables to be spliced 10, 20 under the action of the elastic biasing member 403, for prevent the fiber jackets 13, 23 from being messily wound; and wherein optical fibers 12, 22 of the cables to be spliced 10, 20 are wound above the bottom sheet 401 along a no bending loss path defined by the flexible sheets 410, 420, and orderly restrained in an appropriate location by the flexible sheets 410, 420.

    [0098] The present invention utilizes the bottom sheet 401 to separate the fiber jackets 13, 23 from the optical fibers 12, 22, not only to orderly manage the fiber jackets 13, 23 from the optical fibers 12, 22, but also to expand winding space of the optical fibers 12, 22, because the fiber optic 12, 22 may be coiled directly above the bottom sheet 401.

    [0099] Please continue to refer to Fig. 9A, the elastic biasing member 403 comprises a pair of torque springs, a pair of mounting shafts 402 facing to each other are formed on one side of the bottom of the bottom sheet 401, and the pair of torque springs are respectively sets on the pair of mounting shafts 402.

    [0100] As shown in Fig. 10A, a slot for fiber jacket is formed on bottom surface of the chassis 200 of the closure; fiber jackets 13, 23 are placed in the slot and are pressed below the bottom sheet 401. In one embodiment of the present invention, the bottom sheet 401 may be a flexible sheet-like member. However, the present invention is not limited to this, the bottom sheet 401 may be a rigid sheet-like member, when the bottom sheet 401 is a rigid sheet-like member, a flexible spacer may be provided under the bottom sheet 401, for example, as shown in Figure 10B, the fiber routing management unit further includes a flexible spacer 4011, the flexible spacer 4011 covers on the fiber jackets 13, 23, and the bottom sheet 401 is pressed on the flexible spacer 4011.

    [0101] As shown in FIG. 9A and 10A, a plurality of protruded insertion sheet 4016, 4026 are formed on upper surface of the bottom sheet 401. Flexible sheets 416, 426 comprise legs 416, 426 and a plurality of teeth-like portion 411, 421 located at upper end of the leg portion. Insertion holes (not shown) are formed in lower end of the legs 416, 426, the insertion sheet 4016, 4026 are inserted into inserting holes, so that the flexible sheets 410, 420 are assembled to the bottom sheet 401.

    [0102] As shown in FIG. 9A, 9B and 9C, a plurality of flexible sheets 410, 420 are provided at each of the bottom sheets 401, and teeth-like portions 411, 421 of adjacent two flexible sheets 410, 420 are alternately arranged.

    [0103] As shown in FIG. 9A and 9B, a first flexible sheet 410 and second flexible sheets 420 are mounted at each of the bottom sheets 401, and a first flexible sheet 410 and second flexible sheets 420 are spaced and faced with each other.

    [0104] As shown in Figure 2 and Figure 9A, the first flexible sheet 410 is provided at a location near the side wall of the chassis 200 of the closure, and the second flexible sheet 420 is disposed at a side of the first flexible sheet 410 far away from the side wall of the chassis.

    [0105] In the embodiment shown in FIG. 9A, a plurality of first teeth-like portions 411 are formed on only one side of the first flexible sheet 410 facing the second flexible sheets 420; and a plurality of second teeth-like portions 421 are formed on only one side of the second flexible sheet 420 facing the first flexible sheets 410.

    [0106] In the embodiment shown in FIG. 9B, a plurality of first teeth-like portions 411 are formed on only one side of the first flexible sheet 410 facing the second flexible sheets 420; and a plurality of second teeth-like portions 421 are formed on one side of the second flexible sheet 420 facing the first flexible sheet 410 and the other side of the second flexible sheet 420 far away from the first flexible sheet 410. Thus, coiled optical fibers 12, 22 can be wound not only between the first flexible sheet 410 and second flexible sheet 420, but also the side of the second flexible sheet 420 far away from the first flexible sheet 410, so as to increases coiled space of the fiber optic 12 and 22.

    [0107] In the embodiment shown in FIG. 9C, a third flexible sheet 430 is equipped on each of the bottom sheet 401, the third flexible sheet 430 is arranged inside of the second flexible sheet 420, and a plurality of third teeth-like portions 431 are only formed on one side of the third flexible sheet 430 facing the second flexible sheets 420.

    [0108] As shown in Fig. 2, 10A and 10B, two pairs of fiber routing management units 400 are mounted in the chassis 200 of the closure, in which one pair of fiber routing management units 400 are arranged in the middle of the longitudinal two ends of the chassis 200, and the other pair fiber routing management unit 400 are arranged in the middle of the transverse two ends of the chassis 200.

    [0109] As shown in Fig. 2, 10A and 10B, a row of holder 250 are formed in the middle of the chassis 200 of the closure for holding fiber optic splice protection jacket (not shown, can be heat-shrinkable tube).

    [0110] According to another general concept of the present invention, there is provided a fiber optic splice protection device comprising: a closure including a cover 100 and a chassis 200. Wherein a circle of groove 201 is formed on mating edge of four walls of one of the cover 100 and the chassis 200; a circle of projection 102 is formed on mating edge of four walls of another of the cover 100 and the chassis 200; the cover 100 is locked on the chassis 200 in the way of locking, when the cover is locked on the chassis 200, the projection 102 is pressed against the elastic sealing member 202 and is embedded into the groove 201 in order to achieve the seal locking between the cover 100 and the chassis 200.

    [0111] Figure 3 shows a schematic perspective view of the cover 100 of a fiber optic splice protection device shown in Figure 1. Figure 11 shows a schematic view of the cover and the chassis closed together of a fiber optic splice protection device shown in Figure 1.

    [0112] As shown in Fig. 1, 3 and 4, a circle of groove 201 is formed on upper mating edge of four walls of the chassis 200, and an elastic sealing member 202 is placed in the groove 201. A circle of projections 102 is formed on lower mating edge of four walls of the cover 100. The cover 100 is locked in the chassis 200 in locking manner, as shown in FIG. 11, when the cover is locked on the chassis 200, the projections 102 on the cover 100 is pressed on the elastic sealing member 202 and is embedded in the groove 201 in order to achieve seal locking between the cover 100 and the chassis 200.

    [0113] However, the present invention is not limited to the illustrated embodiment, in another embodiment of the present invention, a circle of projections is formed on upper mating edge of four walls of the chassis, and a circle of groove is formed on lower mating edge of four walls of the cover.

    [0114] In an exemplary embodiment of the present invention, the cover 100 is locked to at least one side of the chassis 200 by a locking device.

    [0115] Please continue to refer to FIG. 1, FIG. 3, FIG. 4 and FIG. 11, in the illustrated embodiment, one side of the cover 100 and the chassis 200 pivotally connected together by a hinge, and the other side of the cover 100 and the chassis 200 are mutually locked together through the locking device.

    [0116] As shown in Fig. 1, 3, 4 and 11, the locking device comprises a snap structure, and the snap structure comprising: an elastic hooks 122 formed on the cover 100; and a notch 222 formed in the chassis, wherein when the elastic hook 122 is inserted and snapped into the notch 222, the cover 100 and chassis 200 are locked together.

    [0117] Figure 12 shows a schematic view of the locking structure of the cover and the chassis of the fiber optic splice protection device according to another exemplary embodiment of the present invention.

    [0118] As shown in Fig. 12, the cover 100 and one side of the chassis 200 are locked to each other by a locking device, and the cover 100 and the other side of chassis 200 are also locked to each other by a locking device.

    [0119] Figures 13A, 13B, 13C, Fig. 14A, 14B and 14C show schematic diagrams of a locking structure of the cover and the chassis of the fiber optic splice protection device according to other exemplary embodiment of the present invention.

    [0120] As shown in FIG. 13A, FIG. 13B, FIG. 13C, FIG. 14A, 14B and 14C, the locking device is a cam locking mechanism, the cam locking mechanism comprises: a snapping plate 602, connected to the cover 100; a sliding plate 601 slidably mounted on the snapping plate 602 and can slide along the snapping plate 602; a rotating circular plate 603 rotatably mounted on the sliding plate 601; an eccentric cam member 608, connected to the rotating circular plate 603 and offset from the center of the rotating circular plate 603 by a predetermined distance, and the eccentric cam member 608 is joined to the notch 606 formed on the snapping plate 602; shaft member 605 connected to the lower end of the sliding plate 601; and a slot 611 formed on the chassis 200, the shaft member 605 is retained to the slot 611, wherein the eccentric cam member 608 can move between a locked position (the position shown in Fig. 13A, 13B and 13C) locking the cover 100 and the chassis 200, and an unlocked position (the position shown in FIG. 14A, FIG. 14B and FIG. 14C) releasing the cover 100 and chassis 200, when the rotating circular plate 603 is rotated; and wherein, when the eccentric cam member 608 moves toward the locked position, the eccentric cam member 608 drives the sliding plate 601 and the snapping plate 602 to moves in a direction for closing to each other, so as to apply tension force to the cover 100 and the chassis 200 for achieving the locking between the cover 100 and the chassis 200; and wherein the eccentric cam member 608 drives the sliding plate 601 and the snapping plate 602 to moves toward a direction for separating from each other so as to release the cover 100 and chassis 200 when the eccentric cam member 608 is moving toward the unlocked position.

    [0121] As shown in FIG. 13A, FIG. 13B, FIG. 13C, FIG. 14A, FIG. 14B and FIG. 14C, a rotating wrench 604 is connected to the rotating circular plate 603, for applying a rotational force to the rotating circular plate 603.

    [0122] As shown in FIG. 13A, FIG. 13B, FIG. 13C, FIG. 14A, 14B and 14C, a pair of rib projections 610 are formed on side of the chassis 200, and the sliding plate 601 and the snapping plate 602 of each cam locking mechanism are located between corresponding pair of projecting ribs 610.

    [0123] As shown in FIG. 13A, FIG. 13B, FIG. 13C, FIG. 14A, 14B and 14C, the slot 611 is formed on the lower end of each pair of projecting ribs 610, two ends of the shaft member 611 are locked into the slot 611.

    [0124] Figure 15 shows a schematic diagram of a locking structure of the cover and the chassis of the fiber optic splice protection device according to other exemplary embodiment of the present invention;

    [0125] As shown in Figure 15, an insertion hole 6041 is formed in the rotating circular plate 603, for inserting a force arm tool into the insertion hole 6041, so as to impart a rotational force to the rotating circular plate 603 by the force arm tool.

    [0126] In the embodiment shown in FIG. 13A, FIG. 13B, FIG. 13C, FIG. 14A, 14B and 14C, the eccentric cam member 608 has disk-shape and has a diameter smaller than that of the rotating circular plate 603.

    [0127] Figure 16 shows a schematic diagram of the eccentric cam member according to other exemplary embodiment of the present invention.

    [0128] In the embodiment shown in FIG. 16, the eccentric cam member 608 has oval-shape, and its major-axis length is less than the diameter of the rotating circular plate 603.

    [0129] Referring to Figure 4 and Figure 2, cable receiving slots 211, 212 are formed on the side wall of the chassis 200, the cables to be spliced 10, 20 are accommodated in the cable receiving slots 211, 212.

    [0130] As shown in Figure 1, the outer side wall of the chassis 200 is formed with a holder knob 210.

    [0131] As shown in Figure 3, a number of mutually crossing longitudinal and transverse strength ribs 101 are formed on the outer surface of the cover 100.

    [0132] As shown in Figure 3, a ruler is on the strength ribs, to provide on-site installation measurement function, for easy on-site installation without need to carry a separate length measuring tools. Those skilled in the art will appreciate, the above-described embodiments are exemplary, and those skilled in the art can improve it, and the structure described in various embodiments can be freely combined without structure or principle conflict occurred.

    [0133] Although the drawings of the present invention has been described, but embodiments disclosed in the figures are intended to be illustrative description of the preferred embodiments of the present invention, and not be construed as a limitation of the present invention.

    [0134] Although several embodiments of the present general inventive concept have been shown and described, those skilled in the art will appreciate, these embodiments of the present invention may be changed without departing from the principles of the general inventive concept of the case, the scope of the present invention is defined by claims and their equivalents.

    [0135] It should be noted that the wording "comprising" does not exclude other elements or steps, the phrase "a" or "an" does not exclude plurality. Further, any references in claims should not be construed as limiting the scope of the invention.


    Claims

    1. A fiber optic splice protection device, comprising:

    a closure including a cover (100) and a chassis (200); and

    a fiber routing management unit (400), mounted on the chassis (200) of the closure, wherein the fiber routing management unit (400) comprises:

    a bottom sheet (401);

    flexible sheets (410, 420), which are removably mounted on top of the bottom sheet (401); and

    an elastic biasing member (403), mounted on the chassis (200) of the closure, for applying elastic biasing force to the bottom sheet (401),

    wherein the bottom sheet (401) is pressed against fiber jackets (13, 23) of the cables to be spliced (10, 20) under the action of the elastic biasing member (403), so as to prevent the fiber jackets (13, 23) from being messily wound; and

    wherein optical fibers (12, 22) of the cables to be spliced (10, 20) are positioned above the bottom sheet (401), wound along a no bending loss path defined by the flexible sheets (410, 420), and orderly restrained in appropriate place by the flexible sheets (410, 420).


     
    2. The fiber optic splice protection device of claim 1, wherein:
    the elastic biasing member (403) comprises a pair of torque springs, a pair of mounting shafts (402) facing to each other are formed on one side of the bottom of the bottom sheet (401), and the pair of torque springs are sleeved on the pair of mounting shafts (402), respectively.
     
    3. The fiber optic splice protection device of claim 2, wherein:
    a fiber jacket slot is formed on bottom surface of the chassis (200) of the closure; fiber jackets (13, 23) are placed in the fiber jacket slot and pressed under the bottom sheet (401).
     
    4. The fiber optic splice protection device of claim 3, wherein:
    the bottom sheet (401) may be a flexible sheet-like member.
     
    5. The fiber optic splice protection device of claim 4, wherein:
    the fiber routing management unit further includes a flexible spacer (4011), the flexible spacer (4011) is covered on the fiber jackets (13, 23), and the bottom sheet (401) is pressed on the flexible spacer (4011).
     
    6. The fiber optic splice protection device of claim 4 or 5, wherein:

    a plurality of protruded insertion sheets (4016, 4026) are formed on upper surface of the bottom sheet (401);

    flexible sheets (416, 426) each comprises legs (416, 426) and a plurality of teeth-like portions (411, 421) located at upper end of the legs;

    insertion holes are formed in lower ends of the legs (416, 426), the insertion sheets (4016, 4026) are inserted into the inserting holes, respectively, so that the flexible sheets (410, 420) are assembled to the bottom sheet (401).


     
    7. The fiber optic splice protection device of claim 6, wherein:

    a plurality of flexible sheets (410, 420) are provided at each of the bottom sheets (401), and

    teeth-like portions (411, 421) of adjacent two flexible sheets (410, 420) are alternately arranged.


     
    8. The fiber optic splice protection device of claim 7, wherein:
    the flexible sheets comprise a first flexible sheet (410) and a second flexible sheet (420) mounted at each of the bottom sheets (401), and the first flexible sheet (410) and the second flexible sheet (420) are spaced from and faced to each other.
     
    9. The fiber optic splice protection device of claim 8, wherein:
    the first flexible sheet (410) is provided at a location near the side wall of the chassis (200) of the closure, and the second flexible sheet (420) is provided at a side of the first flexible sheet (410) far away from the side wall of the chassis (200) of the closure.
     
    10. The fiber optic splice protection device of claim 9, wherein:

    a plurality of first teeth-like portions (411) are formed on only one side of the first flexible sheet (410) facing the second flexible sheets (420); and

    a plurality of second teeth-like portions (421) are formed on only one side of the second flexible sheet (420) facing the first flexible sheets (410).


     
    11. The fiber optic splice protection device of claim 9, wherein:

    a plurality of first teeth-like portions (411) are formed on only one side of the first flexible sheet (410) facing the second flexible sheet (420); and

    a plurality of second teeth-like portions (421) are formed on one side of the second flexible sheet (420) facing the first flexible sheet (410) and the other side far away from the first flexible sheet (410).


     
    12. The fiber optic splice protection device of claim 11, wherein:

    a third flexible sheet (430) is provided on each of the bottom sheet (401), the third flexible sheet (430) is arranged at a location near the other side of the second flexible sheet (420), and

    a plurality of third teeth-like portions (431) are formed on only one side of the third flexible sheet (430) facing the second flexible sheet (420).


     
    13. The fiber optic splice protection device of claim 12, wherein:
    two pairs of fiber routing management units (400) are mounted in the chassis (200) of the closure, in which one pair of fiber routing management units (400) are arranged in the middle location between two longitudinal ends of the chassis (200), and the other pair fiber routing management units (400) are arranged in the middle location between the two lateral ends of the chassis (200).
     
    14. The fiber optic splice protection device of claim 12, wherein:
    a row of slots (250) are formed in the middle of the chassis (200) of the closure for holding fiber optic splice protection jackets.
     


    Ansprüche

    1. Eine Glasfaserspleißschutzvorrichtung, die Folgendes beinhaltet:

    einen Verschluss, der eine Abdeckung (100) und ein Gehäuse (200) umfasst; und

    eine Faserrouting-Managementeinheit (400), die auf dem Gehäuse (200) des Verschlusses montiert ist, wobei die Faserrouting-Managementeinheit (400) Folgendes beinhaltet:

    eine Bodenplatte (401);

    flexible Platten (410, 420), die auf der Oberseite der Bodenplatte (401) entfernbar montiert sind; und

    ein elastisches Vorspannglied (403), das auf dem Gehäuse (200) des Verschlusses montiert ist, zum Ausüben einer elastischen Vorspannkraft auf die Bodenplatte (401),

    wobei die Bodenplatte (401) unter der Einwirkung des elastischen Vorspannglieds (403) gegen die Fasermäntel (13, 23) der zu spleißenden Kabel (10, 20) gedrückt wird, um so zu verhindern, dass die Fasermäntel (13, 23) unordentlich gewunden werden; und

    wobei optische Fasern (12, 22) der zu spleißenden Kabel (10, 20) über der Bodenplatte (401), gewunden entlang eines Pfads ohne Krümmungsverluste, der durch die flexiblen Platten (410, 420) definiert wird, positioniert sind, und durch die flexiblen Platten (410, 420) an passender Stelle ordentlich gesichert sind.


     
    2. Glasfaserspleißschutzvorrichtung gemäß Anspruch 1, wobei:
    das elastische Vorspannglied (403) ein Paar Drehmomentfedern beinhaltet, ein Paar Montagewellen (402), die einander zugewandt sind, auf einer Seite der Unterseite der Bodenplatte (401) ausgebildet ist, und das Paar Drehmomentfedern jeweils auf das Paar Montagewellen (402) aufgestülpt ist.
     
    3. Glasfaserspleißschutzvorrichtung gemäß Anspruch 2, wobei:
    ein Fasermantelschlitz auf der Bodenfläche des Gehäuses (200) des Verschlusses ausgebildet ist; Fasermäntel (13, 23) in den Fasermantelschlitz platziert und unter die Bodenplatte (401) gedrückt werden.
     
    4. Glasfaserspleißschutzvorrichtung gemäß Anspruch 3, wobei:
    die Bodenplatte (401) ein flexibles, plattenartiges Glied sein kann.
     
    5. Glasfaserspleißschutzvorrichtung gemäß Anspruch 4, wobei:
    die Faserrouting-Managementeinheit ferner einen flexiblen Abstandshalter (4011) umfasst, der flexible Abstandshalter (4011) auf den Fasermänteln (13, 23) abgedeckt ist, und die Bodenplatte (401) auf den flexiblen Abstandshalter (4011) gedrückt ist.
     
    6. Glasfaserspleißschutzvorrichtung gemäß Anspruch 4 oder 5, wobei:

    eine Vielzahl von vorstehenden Einführungsplatten (4016, 4026) auf der oberen Fläche der Bodenplatte (401) ausgebildet ist;

    die flexiblen Platten (416, 426) jeweils Beine (416, 426) und eine Vielzahl von zahnartigen Abschnitten (411, 421), die am oberen Ende der Beine liegt, beinhalten;

    Einführungslöcher in den unteren Enden der Beine (416, 426) ausgebildet sind, die Einführungsplatten (4016, 4026) jeweils in die Einführungslöcher eingeführt sind, sodass die flexiblen Platten (410, 420) mit der Bodenplatte (401) zusammengesetzt sind.


     
    7. Glasfaserspleißschutzvorrichtung gemäß Anspruch 6, wobei:

    eine Vielzahl von flexiblen Platten (410, 420) an jeder der Bodenplatten (401) bereitgestellt ist, und

    zahnartige Abschnitte (411, 421) von zwei angrenzenden flexiblen Platten (410, 420) alternierend angeordnet sind.


     
    8. Glasfaserspleißschutzvorrichtung gemäß Anspruch 7, wobei:
    die flexiblen Platten eine erste flexible Platte (410) und eine zweite flexible Platte (420) beinhalten, die an jeder der Bodenplatten (401) montiert sind, und die erste flexible Platte (410) und die zweite flexible Platte (420) voneinander beabstandet und einander zugewandt sind.
     
    9. Glasfaserspleißschutzvorrichtung gemäß Anspruch 8, wobei:
    die erste flexible Platte (410) in einer Lage nahe der Seitenwand des Gehäuses (200) des Verschlusses bereitgestellt ist, und die zweite flexible Platte (420) an einer Seite der ersten flexiblen Platte (410) weit weg von der Seitenwand des Gehäuses (200) des Verschlusses bereitgestellt ist.
     
    10. Glasfaserspleißschutzvorrichtung gemäß Anspruch 9, wobei:

    eine Vielzahl von ersten zahnartigen Abschnitten (411) nur auf einer Seite der ersten flexiblen Platte (410), die den zweiten flexiblen Platten (420) zugewandt ist, ausgebildet ist; und

    eine Vielzahl von zweiten zahnartigen Abschnitten (421) nur auf einer Seite der zweiten flexiblen Platte (420), die den ersten flexiblen Platten (410) zugewandt ist, ausgebildet ist.


     
    11. Glasfaserspleißschutzvorrichtung gemäß Anspruch 9, wobei:

    eine Vielzahl von ersten zahnartigen Abschnitten (411) nur auf einer Seite der ersten flexiblen Platte (410), die der zweiten flexiblen Platte (420) zugewandt ist, ausgebildet ist; und

    eine Vielzahl von zweiten zahnartigen Abschnitten (421) auf einer Seite der zweiten flexiblen Platte (420), die der ersten flexiblen Platte (410) zugewandt ist, und der anderen Seite, weit weg von der ersten flexiblen Platte (410), ausgebildet ist.


     
    12. Glasfaserspleißschutzvorrichtung gemäß Anspruch 11, wobei:

    eine dritte flexible Platte (430) auf jeder der Bodenplatte (401) ausgebildet ist, die dritte flexible Platte (430) in einer Lage nahe der anderen Seite der zweiten flexiblen Platte (420) angeordnet ist, und

    eine Vielzahl von dritten zahnartigen Abschnitten (431) nur auf einer Seite der dritten flexiblen Platte (430), die der zweiten flexiblen Platte (420) zugewandt ist, ausgebildet ist.


     
    13. Glasfaserspleißschutzvorrichtung gemäß Anspruch 12, wobei:
    zwei Paare Faserrouting-Managementeinheiten (400) in dem Gehäuse (200) des Verschlusses montiert sind, in dem ein Paar Faserrouting-Managementeinheiten (400) in mittlerer Lage zwischen zwei Längsenden des Gehäuses (200) angeordnet ist, und das andere Paar Faserrouting-Managementeinheiten (400) in mittlerer Lage zwischen den zwei Querenden des Gehäuses (200) angeordnet ist.
     
    14. Glasfaserspleißschutzvorrichtung gemäß Anspruch 12, wobei:
    eine Reihe von Schlitzen (250) in der Mitte des Gehäuses (200) des Verschlusses zum Halten der Glasfaserspleißschutzmäntel ausgebildet ist.
     


    Revendications

    1. Un dispositif de protection d'épissure de fibre optique, comprenant :

    une enceinte incluant un couvercle (100) et un châssis (200) ; et

    une unité de gestion de routage de fibre (400), montée sur le châssis (200) de l'enceinte, l'unité de gestion de routage de fibre (400) comprenant :

    une feuille de dessous (401) ;

    des feuilles souples (410, 420), qui sont montées de façon amovible par-dessus la feuille de dessous (401) ; et

    un élément de sollicitation élastique (403), monté sur le châssis (200) de l'enceinte, pour appliquer une force de sollicitation élastique à la feuille de dessous (401),

    la feuille de dessous (401) étant pressée contre des gaines de fibre (13, 23) des câbles à épisser (10, 20) sous l'action de l'élément de sollicitation élastique (403), de manière à empêcher les gaines de fibre (13, 23) d'être mal enroulées ; et

    où des fibres optiques (12, 22) des câbles à épisser (10, 20) sont positionnées au-dessus de la feuille de dessous (401), enroulées le long d'un trajet sans perte de courbure défini par les feuilles souples (410, 420), et retenues de façon ordonnée dans un endroit approprié par les feuilles souples (410, 420).


     
    2. Le dispositif de protection d'épissure de fibre optique de la revendication 1, où :
    l'élément de sollicitation élastique (403) comprend une paire de ressorts de torsion, une paire d'arbres de montage (402) se faisant face est formée sur un côté du dessous de la feuille de dessous (401), et la paire de ressorts de torsion est emmanchée sur la paire d'arbres de montage (402), respectivement.
     
    3. Le dispositif de protection d'épissure de fibre optique de la revendication 2, où :

    une fente de gaine de fibre est formée sur la surface de dessous du châssis (200) de l'enceinte ;

    des gaines de fibre (13, 23) sont placées dans la fente de gaine de fibre et pressées sous la feuille de dessous (401).


     
    4. Le dispositif de protection d'épissure de fibre optique de la revendication 3, où :
    la feuille de dessous (401) peut être un élément de type feuille souple.
     
    5. Le dispositif de protection d'épissure de fibre optique de la revendication 4, où :
    l'unité de gestion de routage de fibre inclut en outre une entretoise souple (4011), l'entretoise souple (4011) vient couvrir sur les gaines de fibre (13, 23), et la feuille de dessous (401) est pressée sur l'entretoise souple (4011).
     
    6. Le dispositif de protection d'épissure de fibre optique de la revendication 4 ou de la revendication 5, où :

    une pluralité de feuilles d'insertion en saillie (4016, 4026) est formée sur la surface supérieure de la feuille de dessous (401) ;

    des feuilles souples (416, 426) comprennent chacune des pattes (416, 426) et une pluralité de parties de type dents (411, 421) situées au niveau de l'extrémité supérieure des pattes ;

    des trous d'insertion sont formés dans les extrémités inférieures des pattes (416, 426), les feuilles d'insertion (4016, 4026) sont insérées dans les trous d'insertion, respectivement, de sorte que les feuilles souples (410, 420) sont assemblées à la feuille de dessous (401).


     
    7. Le dispositif de protection d'épissure de fibre optique de la revendication 6, où :

    une pluralité de feuilles souples (410, 420) est fournie au niveau de chacune des feuilles inférieures (401), et

    des parties de type dents (411, 421) de deux feuilles souples adjacentes (410, 420) sont agencées en alternance.


     
    8. Le dispositif de protection d'épissure de fibre optique de la revendication 7, où :
    les feuilles souples comprennent une première feuille souple (410) et une deuxième feuille souple (420) montées au niveau de chacune des feuilles de dessous (401), et la première feuille souple (410) et la deuxième feuille souple (420) sont espacées l'une de l'autre et se font face.
     
    9. Le dispositif de protection d'épissure de fibre optique de la revendication 8, où :
    la première feuille souple (410) est fournie au niveau d'un emplacement proche de la paroi de côté du châssis (200) de l'enceinte, et la deuxième feuille souple (420) est fournie au niveau d'un côté de la première feuille souple (410) éloigné de la paroi de côté du châssis (200) de l'enceinte.
     
    10. Le dispositif de protection d'épissure de fibre optique de la revendication 9, où :

    une pluralité de premières parties de type dents (411) est formée sur seulement un côté de la première feuille souple (410) faisant face aux deuxièmes feuilles souples (420) ; et

    une pluralité de deuxièmes parties de type dents (421) est formée sur seulement un côté de la deuxième feuille souple (420) faisant face aux premières feuilles souples (410).


     
    11. Le dispositif de protection d'épissure de fibre optique de la revendication 9, où :

    une pluralité de premières parties de type dents (411) est formée sur seulement un côté de la première feuille souple (410) faisant face à la deuxième feuille souple (420) ; et

    une pluralité de deuxièmes parties de type dents (421) est formée sur un côté de la deuxième feuille souple (420) faisant face à la première feuille souple (410) et l'autre côté éloigné de la première feuille souple (410).


     
    12. Le dispositif de protection d'épissure de fibre optique de la revendication 11, où :

    une troisième feuille souple (430) est fournie sur chacune de la feuille de dessous (401), la troisième feuille souple (430) est agencée au niveau d'un emplacement proche de l'autre côté de la deuxième feuille souple (420), et

    une pluralité de troisièmes parties de type dents (431) est formée sur seulement un côté de la troisième feuille souple (430) faisant face à la deuxième feuille souple (420).


     
    13. Le dispositif de protection d'épissure de fibre optique de la revendication 12, où :
    deux paires d'unités de gestion de routage de fibre (400) sont montées dans le châssis (200) de l'enceinte, dans lequel une paire d'unités de gestion de routage de fibre (400) est agencée dans l'emplacement du milieu entre deux extrémités longitudinales du châssis (200), et l'autre paire d'unités de gestion de routage de fibre (400) est agencée dans l'emplacement du milieu entre les deux extrémités latérales du châssis (200).
     
    14. Le dispositif de protection d'épissure de fibre optique de la revendication 12, où :
    une rangée de fentes (250) est formée au milieu du châssis (200) de l'enceinte pour contenir des gaines de protection d'épissure de fibre optique.
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description