(19)
(11)EP 3 355 844 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
25.03.2020 Bulletin 2020/13

(21)Application number: 16787598.8

(22)Date of filing:  03.10.2016
(51)International Patent Classification (IPC): 
A61G 3/08(2006.01)
B60P 7/08(2006.01)
(86)International application number:
PCT/US2016/055228
(87)International publication number:
WO 2017/059457 (06.04.2017 Gazette  2017/14)

(54)

MOBILITY RESTRAINT DEVICE TENSIONER

MOBILITÄTSRÜCKHALTEVORRICHTUNGSSPANNER

TENDEUR DE DISPOSITIF DE RESTRICTION DE MOBILITÉ


(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: 02.10.2015 US 201562236832 P

(43)Date of publication of application:
08.08.2018 Bulletin 2018/32

(73)Proprietor: Valeda Company (d/b/a "Q'Straint")
Oakland Park, FL 33334 (US)

(72)Inventors:
  • CARDONA, Edgardo
    Pompano Beach, FL 33060 (US)
  • GIRARDIN, Patrick
    Fort Lauderdale, FL 33316 (US)

(74)Representative: Foot, Paul Matthew James 
Withers & Rogers LLP 4 More London Riverside
London Greater London SE1 2AU
London Greater London SE1 2AU (GB)


(56)References cited: : 
EP-A1- 1 414 671
GB-A- 2 455 290
DE-B3-102006 023 028
US-A1- 2003 190 208
  
     
    Remarks:
    The file contains technical information submitted after the application was filed and not included in this specification
     
    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

    BACKGROUND.


    TECHNICAL FIELD.



    [0001] The embodiments described and claimed herein relate generally to securing a mobility device (e.g. wheelchair, scooter, stretcher, etc.) using a "tensioner" that induces tension into a restraint to provide greater stabilization while the mobility device is being transported in a vehicle (although it could be used to transport it outside of a vehicle). In one embodiment, the tensioning device induces tension into a designated front restraint (which is attached to a point on a mobility device), and urges the mobility device toward or into contact with a "bumper". The combination of the tensioner and bumper acts to further stabilize the mobility device while being transported. While it could be used in a 4-point mobility device restraint configuration, it is envisioned and most beneficial when used in a 2 or 3-point restraint system configuration, such as those disclosed in U.S. Patent No. 9,107,786 and U.S. Patent Publication No. 2014-0334893.

    BACKGROUND ART.



    [0002] Historically, mobility device securement systems had been designed with four restraints, one attached to each corner of the mobility device (two in front, two in rear). Recently, new systems have been developed with less than four attachment points (e.g., Q'Straint's Q'Pod and American Seating's Reliant). These systems have used three attachment points instead of four, and they include a tensioning device to help stabilize the mobility device while being transported.

    [0003] One challenge is vehicle (e.g. bus) wall seating systems are becoming thinner in order to allow for larger aisle clearances; this is important to allow mobility device passengers to maneuver, and others passengers to pass in aisle when mobility device passengers are occupying the securement areas. Often times, two mobility device securement systems (i.e. Q'Pods) are installed side-by-side, and when occupied simultaneously by two mobility device passengers, the clear aisle spacing is limited or non-existent, which causes issues. Also, many vehicle retrofit opportunities pose difficult challenges as there are often times existing fixed obstructions such as heating & cooling ducts and wheel-wells that are impossible or very costly to remove. In these instances, current systems with tensioners are unable to be installed in these applications and the only current alternative is the traditional 4-point system which is less effective, especially in a city bus environment where limiting dwell times are critical.

    [0004] Various embodiments of the Q'Pod's tensioning devices are disclosed in U.S. Patent No. 9,107,786 at, for example, Figures 5 and 11-15. In the Q'Pod's current design, twisting of handle is required to release the mechanism, which could be awkward for some users. In addition, the twisting action increases the "knuckle clearance" required by certain standards. Knuckle clearance on all sides of the turning handle requires additional space in the bus as the entire device needs to be pushed out further to ensure clearance is met. The overall size of the unit can create installation challenges especially in situations where there are ducts under the flip seats. Finally, the tensioner does not provide a way to limit the amount of tension the user can exert on the restraint.

    [0005] European Patent Publication No. EP1414671A1 provides a strap winch device for fitting on a flat-bed open truck trailer. A number of these winches are connected to a single shaft driven by a motor to tighten any straps that loosen when the trailer is in motion. The winch device may be operated manually using a tubular bar engaged with an end portion of the shaft.

    [0006] UK Patent Publication No, GB2455290A provides a load binding for securing a load to a towed vehicle. The load binding includes a strap and a winch for tightening the strap. The winch is operated by rotating a drive shaft using a drive nut which is connected to the drive shaft by gearing in order to provide a mechanical advantage.

    [0007] German Patent No. DE102006023028B3 provides a securing system for a load in the luggage space of a car. The system includes a load securing device with a webbing strap which is wound on a winding spool. The spool is rotated using a crank handle connected to the spool via a ball bearing detent system. When a predetermined torque limit is exceeded, the ball bearings emerge from their respective detents to allow the spool to unwind until the torque falls below the limit and the ball bearings remain in the next detent position. A springloaded ratchet and pawl are provided to prevent the handle from inadvertently rotating in the unwinding direction.

    [0008] According to the invention, there is provided a tensioning device as set out in claim 1.

    SUMMARY OF THE PRESENT EMBODIMENTS.



    [0009] Clearly, the prior art devices have limitations which the present embodiments overcome and make for more effective installation and use. For example, the new compact tensioner disclosed herein is thinner and has a smaller footprint, allowing it to be installed on the increasingly thinner seats and reduces the potential interference with existing fixed obstructions. In addition to the smaller size, the new compact tensioner offers a controllable amount of tension of the belt which results in consistent securement of the mobility device for a secure and comfortable ride. Current systems today often provide too much tension on the belt, or too little resulting on a very uncomfortable ride since the mobility devices will be moving side to side as the vehicle is moving.

    [0010] The compact tensioner is part of a mobility device and occupant restraint system such as the Q'Pod. The typical restraint system comprises a rear barrier with one or more tie downs, a bumper, a front tie down, and the tensioner. The tensioner may be placed in front of the mobility device and under or adjacent a flip seat for engagement with the front tie down.

    [0011] The compact tensioner has at least two positions/modes: (1) Stow Position; and (2) Tension Mode. Once a mobility device is positioned inside the vehicle and in the park zone, the two rear tie down hooks are attached to the rear of the mobility device and the mobility device is steered into the final position, close to the side bumper. To secure the front of mobility device, the user should ensure that the handle of the compact tensioner is in the stow position-at this point the belt of the front tie down will be in the release mode. The mobility device is then secured with a J hook at the end of the front tie down belt. To enter the Tension Mode, the release button on the tensioner handle is pushed and held while moving the handle down, and then immediately releasing the button. In the Tension Mode, tension can be applied to the belt by cranking the handle. Once the tension on the belt has reached a predetermined amount of load, a clutch in the compact tensioner will slip preventing over tension. Shoulder and lap belts can then be secured on the mobility device passenger. Tension on the belt is released by putting the compact tensioner back into in the Stow Position. To put the compact tensioner in the Stow Position, the release button on the handle is pushed and held while moving the handle up, and then immediately releasing the button. Thereafter, the shoulder and lap belt as well as the rear mobility device tie-downs should be disconnected and returned to the stow position before moving the mobility device out.

    [0012] The compact tensioner may include a number of key features and benefits:
    • Load limiting action: The device may be equipped with a load limiting device that controls the amount of tension/load that the operator can apply to the restraint and prevents excessive loading to the wheelchair and/or the tensioner.
    • A compact design (thinner, narrower & smaller footprint overall) may allow for easier and more flexible installation, in more applications/configurations, especially where space is limited, seats are very thin, or fixed obstructions exist like heating/cooling systems, wheel arches, etc. However, critical dimensions like belt opening location may be maintained to keep effective restraint angle. In addition, the compact design may allow for increased belt length which increases ease of securement with certain wheelchairs.
    • Safety unlock indicator: An indicator (visual or audible) may be used, which alerts the user when the device is not locked. This serves to let user know the system is 'not' locked /secured, which helps to prevent accidental release or a mobility device not being secured before being transported.
    • Simple/Intuitive Handle & Release: The handle is easy to use and operate. A release 'button' acts similar to parking brake, and as such is very intuitive. In some embodiments, no twisting is required to activate (i.e. no turning handle). A single button release reduces the knuckle clearance required, allowing for 'tighter' installations. By moving handle up and down, tension may be applied to the belt.
    • Flexible installation: The top mounting plate of the unit can be made to a specific installation situation (i.e., various seats, or to a wall or floor mount)
    • Load indicator: An audible or visual load indicator may be provided, which alerts the user when the desired tension on the belt has been reached.
    • Field serviceability (replaceable components): In some embodiments, the unit can be taken apart to replace sub-components such as the Handle, Load Limiting Device, and the Retractor assembly.

    BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS.



    [0013] These and other features, aspects, objects, and advantages of the embodiments described and claimed herein will become better understood upon consideration of the following detailed description, appended claims, and accompanying drawings.

    Figure 1 is a perspective view of a first embodiment of a tensioner;

    Figure 2 is a second perspective view of the first embodiment showing the clutch mechanism;

    Figure 3 is a third perspective view of the first embodiment showing additional components of the clutch mechanism;

    Figure 4 is an exploded view of the clutch mechanism for the first embodiment;

    Figure 5 is first side view of the first embodiment showing the release button mechanism in the stow mode;

    Figure 6 is a fourth perspective view of the first embodiment showing internal components of the release button mechanism in the stow mode;

    Figure 7 is a second side view of the first embodiment showing the release button mechanism in transition from the stow mode to the tension mode;

    Figure 8 is third side view of the first embodiment showing the release button mechanism in the tension mode;

    Figure 9 is a fourth side view of the first embodiment showing the safety indication mechanism in the stow mode;

    Figure 10 a fifth perspective view of the first embodiment showing the safety indication mechanism in the stow mode;

    Figure 11 is a first side view of a second embodiment of a tensioner in the stow mode;

    Figure 12 is a first front view of the second embodiment in the stow mode;

    Figure 13 is a second side view of the second embodiment in the tension mode;

    Figure 14 is a second front view of the second embodiment in the tension mode;

    Figure 15 is a first perspective view of the second embodiment showing the clutch mechanism; and,

    Figure 16 is a second perspective view of the second embodiment showing the safety indication mechanism.



    [0014] It should be understood that the drawings are not necessarily to scale and that the embodiments are sometimes illustrated by graphic symbols, phantom lines, diagrammatic representations and fragmentary views. In certain instances, details which are not necessary for an understanding of the embodiments described and claimed herein or which render other details difficult to perceive may have been omitted. It should be understood, of course, that the inventions described herein are not necessarily limited to the particular embodiments illustrated.

    [0015] Like reference numerals will be used to refer to like or similar parts from Figure to Figure in the following detailed description of the drawings.

    DETAILED DESCRIPTION OF THE PRESENT EMBODIMENTS.



    [0016] With reference to Figures 1-4, a first embodiment of a tensioner 1 and an associated clutch (or clutch assembly/mechanism) 200 is shown. The clutch assembly 200 is an automatic load limiting device that limits the torque applied to the connector shaft 300 by slipping of the drive sprocket 260 with respect to the drive hub 270. The range of torque is adjustable by the hex nut 220 which applies a load of force to the friction discs 210 thru the pressure plate (250). The friction and force couples the drive sprocket 260 to the hub 270 which is connected to the drive shaft 300. As the handle 100 is rotated, the drive pawl 110 engages the drive sprocket 260 which causes the connector shaft 300 to rotate. Since the connector shaft 300 is coupled to the retractor 400 shaft, it will also rotate causing the webbing 410 to be wound into the retractor 400. As the webbing 410 is being wound into the retractor 400 while the end (not shown) is connected to a mobility device (not shown), a tension load develops on the webbing 410. As the web 410 load increases, the torque demand also increases until it is greater than the preset torque on the clutch 200 causing a slip between the sprocket 260 and friction discs 210. At this point, no additional torque can be applied and therefore no additional tension load on the web 410 can be achieved - the clutch 200 will just keep slipping.

    [0017] Figures 5-8 depict a release button mechanism for the first embodiment of the tensioner 1, which is operated by the release button at the top of the handle. When the handle 100 is in the stow position, as shown in Figures 5-6, the push cam 130 is in the up position and the lock/release arm 140 is in the first lock slot 150. At this point, the ratchet pawl 110 is held away from the clutch sprocket 260 by the control plate 170. At the same time, the retractor release shaft 160 engages and pushes down the retractor pawl release arm 420, placing the retractor 400 in an unlocked state (allowing webbing 410 to be retracted and withdrawn).

    [0018] Figure 7 shows the release button mechanism in transition from the stow mode to the tension mode, while Figure 8 shows the release button mechanism in the tension mode. When the release button 120 is pressed down, as shown in Figure 7, the push cam 130moves down and the lock/release arm 140 moves out from the first lock slot 150. As the handle 100 rotates forward and the push button 120 is released, as shown in Figure 8, the push cam 130 moves up and the lock /release arm 140 engages the second lock slot 155. At this point, the retractor release shaft 160 moves up and out of engagement with the retractor pawl release arm 420. In that regard, the retractor 400 is placed in a locked mode where the retractor pawl 430 engages the retractor sprocket 440 (whereby webbing 410 can be retracted, but not withdrawn from the retractor spool 450). The ratchet pawl 110 engages the clutch 200, as shown in both Figures 7 and 8, and as the handle 100 is moved up and down tension is applied to the retractor 400 web 410.

    [0019] Figures 9 and 10 show the operation of the safety indication mechanism of the first embodiment. When the handle 100 is in the stowed/ release position (Figures 9 and 10), the retractor release shaft 160 is pushed down in the control plate slot 175 causing the lock indicator 180 to move up indicating that the handle 100 is in the stowed released position. When the handle 100 is moved to the lock/tension mode, the lock indicator 180 will move down as the lock indicator bracket 190 is spring loaded (i.e., forcing the retractor release shaft 160 upward into engagement with the top of the control plate slot 175).

    [0020] With reference to Figures to 11 to 16, a second embodiment of the tensioner 1001 is shown. Figures 11-12 show the tensioner 1001 in the Stow Mode, while Figures 13-14 show the tensioner 1001 in the Tension Mode. The safety indicator window 1180 reflects a released condition, as shown in Figure 21, when the tensioner 1001 is in the Stow Mode. In large part, the clutch mechanism 1200 of the second embodiment is the same as that of the first embodiment. One major difference between the first and second embodiment relates to the release button mechanism. The second embodiment, as shown in Figure 15, does not include a push button, but rather includes a trigger 1120 on the underside of the handle 1100. Squeezing the of the trigger 1120 lifts the lock member 1140, by way of a cable or similar component (not shown), out of a first lock slot 1150 in the control plate 1170, which allows the handle 1100 to be moved from the Stow Mode to the Tension Mode. Once the trigger 1120 is released, the lock member 1140 moves downward due to biasing by a spring (not shown) or the like. The lip 1155 in the control plate prohibits the handle 1100 from moving back to the Stow Mode until the trigger 1120 is squeezed such that the lock member 1140 lifts to clear the lip 1155.

    [0021] Another slight difference between the first and second embodiment is the lock indicator bracket 1190, which is shown in Figure 16. As before, the lock indicator bracket 1190 is held in the position shown in Figure 16 by the handle 1100. When the handle 1100 is moved to the Tension Mode, the lock indicator bracket 1190 is biased in a counter-clockwise direction (view from the angle shown in Figure 27) such that the release indicator 1185 is not visible through the indicator window 1180.

    [0022] Although the inventions described and claimed herein have been described in considerable detail with reference to certain embodiments, one skilled in the art will appreciate that the inventions described and claimed herein can be practiced by other than those embodiments, which have been presented for purposes of illustration and not of limitation.


    Claims

    1. A tensioning device (1) comprising: a handle (100) operably connected to a drive shaft (300) by a clutch assembly (200) wherein rotational movement of the handle (100) is communicated to the drive shaft (300) by the clutch assembly (200) until the clutch assembly (200) reaches a torque limit;
    characterized in that:

    the clutch assembly (200) comprises at least one friction member (210), a pawl (110), and a drive sprocket (260), wherein the pawl (110) is operably connected to the handle (100) and communicates rotational movement of the handle (100) to the drive sprocket (260), and wherein the friction member (210) communicates rotation of the drive sprocket (260) to the drive shaft (300) up to the torque limit; and

    the device further comprising at least one retractor (400) rotationally operable by the drive shaft (300), the retractor (400) comprising a retractor pawl (430), a retractor sprocket (440), a webbing (410) and a retractor spool (450), wherein the retractor comprises a locked mode where the retractor pawl (430) engages the retractor sprocket (440) whereby the webbing (410) can be retracted but not withdrawn from the retractor spool (450), and wherein the retractor comprises an unlocked mode where the retractor pawl (430) does not engage the retractor sprocket (440) thereby allowing the webbing (410) to be retracted and withdrawn from the retractor spool (450).


     
    2. The tensioning device (1) of claim 1 wherein the drive shaft (300) is directly connected to a shaft of the retractor (400).
     
    3. The tensioning device (1) of claim 1 wherein the clutch assembly (200) further comprises a compression member (220) for compressing the friction member (210) between the drive member (260) and the drive shaft (300).
     
    4. The tensioning device of (1) claim 3 wherein the compression member (220) is adjustable.
     
    5. The tensioning device (1) of claim 1 wherein the clutch assembly (200) further comprises a compression member (220) for compressing the friction member (210) and drive sprocket (260) whereby the predetermined amount of force may be adjusted.
     
    6. The tensioning device (1) of claim 1, wherein:

    the tensioning device (1) having two modes;

    the tensioning device (1) further includes a hub (1190) with a condition indicator (1180), the hub (1190) being rotationally biased to display the condition indicator (1180);

    the handle (100) urging the hub (1190) to conceal the condition indicator (1180) when placed in one of the two modes.


     
    7. The tensioning device (1) of claim 6, wherein the hub (190) is rotationally connected to a retractor release member (160) that engages a pawl release arm (420) when the tensioning device (1) is in one of the two modes.
     
    8. The tensioning device (1) of claim 1, wherein:

    the tensioning device (1) has a stow mode and a tension mode;

    the tensioning device (1) further includes a hub (190) with a condition indicator (180),

    wherein in the tension mode, the hub (190) being rotationally biased for the condition indicator to display a safe condition; and

    wherein in the stow mode, the handle (100) urging the hub (190) for the condition indicator to displays an unsafe condition.


     
    9. The tensioning device (1) of claim 8, wherein the hub (190) is rotationally connected to a retractor release member (160) that engages a pawl release arm (420) when the tensioning device is in the stow mode.
     
    10. The tensioning device of claim 1, wherein:

    the tensioning device (1) has a stow mode and a tension mode;

    the tensioning device (1) further includes a retractor release member (160) that is rotationally biased out of engagement with a pawl release arm (420) of the retractor (400); and,

    in the stow position, the handle (100) urging the retractor release member (160) into engagement with the pawl release arm (420).


     


    Ansprüche

    1. Spannvorrichtung (1), umfassend:

    einen Griff (100), der durch eine Kupplungsbaugruppe (200) mit einer Antriebswelle (300) betriebsfähig verbunden ist, wobei die Drehbewegung des Griffs (100) durch die Kupplungsbaugruppe (200) auf die Antriebswelle (300) übertragen wird, bis die Kupplungsbaugruppe (200) eine Drehmomentgrenze erreicht;

    dadurch gekennzeichnet, dass:

    die Kupplungsbaugruppe (200) mindestens ein Reibungselement (210), eine Sperrklinke (110) und ein Antriebsritzel (260) umfasst, wobei die Sperrklinke (110) betriebsfähig mit dem Griff (100) verbunden ist und eine Drehbewegung des Griffs (100) auf das Antriebsritzel (260) überträgt, und wobei das Reibungselement (210) die Drehung des Antriebsritzels (260) auf die Antriebswelle (300) bis zur Drehmomentgrenze überträgt; und

    wobei die Vorrichtung ferner mindestens eine Aufrollvorrichtung (400) umfasst, die durch die Antriebswelle (300) drehbar betätigt werden kann, wobei die Aufrollvorrichtung (400) eine Aufrollsperrklinke (430), ein Aufrollzahnrad (440), ein Gurtband (410) und eine Aufrollspule (450) umfasst, wobei die Aufrollvorrichtung einen gesperrten Modus aufweist, wobei die Aufrollsperrklinke (430) mit dem Aufrollzahnrad (440) in Eingriff steht, wodurch das Gurtband (410) aufgewickelt, aber nicht von der Aufrollspule (450) abgezogen werden kann, und wobei die Aufrollvorrichtung einen nicht gesperrten Modus aufweist, wobei die Aufrollsperrklinke (430) nicht mit dem Aufrollzahnrad (440) in Eingriff steht, wodurch das Gurtband (410) von der Aufrollspule (450) aufgewickelt und abgezogen werden kann.


     
    2. Spannvorrichtung (1) nach Anspruch 1, wobei die Antriebswelle (300) direkt mit einer Welle der Aufrollvorrichtung (400) verbunden ist.
     
    3. Spannvorrichtung (1) nach Anspruch 1, wobei die Kupplungsanordnung (200) ferner ein Kompressionselement (220) zum Zusammendrücken des Reibungselements (210) zwischen dem Antriebselement (260) und der Antriebswelle (300) umfasst.
     
    4. Spannvorrichtung nach (1) Anspruch 3, wobei das Kompressionselement (220) einstellbar ist.
     
    5. Spannvorrichtung (1) nach Anspruch 1, wobei die Kupplungsanordnung (200) ferner ein Kompressionselement (220) zum Zusammendrücken des Reibungselements (210) und des Antriebsritzels (260) umfasst, wodurch die vorbestimmte Kraftgröße eingestellt werden kann.
     
    6. Spannvorrichtung (1) nach Anspruch 1, wobei:

    die Spannvorrichtung (1) zwei Betriebsarten hat;

    die Spannvorrichtung (1) ferner eine Nabe (1190) mit einem Zustandsanzeiger (1180) aufweist, wobei die Nabe (1190) zur Anzeige des Zustandsanzeigers (1180) drehend vorgespannt ist;

    der Griff (100) die Nabe (1190) veranlasst, den Zustandsanzeiger (1180) zu verbergen, wenn er in einen der beiden Betriebsarten versetzt wird.


     
    7. Spannvorrichtung (1) nach Anspruch 6, wobei die Nabe (190) drehbar mit einem Freigabeelement (160) der Aufrollvorrichtung verbunden ist, das in einen Sperrklinken-Freigabearm (420) eingreift, wenn sich die Spannvorrichtung (1) in einer der beiden Betriebsarten befindet.
     
    8. Spannvorrichtung (1) nach Anspruch 1, wobei:

    die Spannvorrichtung (1) über einen Verstaumodus und einen Spannmodus verfügt;

    die Spannvorrichtung (1) ferner eine Nabe (190) mit einem Zustandsanzeiger (180) aufweist, wobei im Spannmodus die Nabe (190) drehend vorgespannt ist, damit der Zustandsanzeiger einen sicheren Zustand anzeigt; und

    wobei im Verstaumodus der Griff (100) die Nabe (190) für den Zustandsanzeiger dazu veranlasst, einen unsicheren Zustand anzuzeigen.


     
    9. Spannvorrichtung (1) nach Anspruch 8, wobei die Nabe (190) drehbar mit einem Freigabeelement (160) der Aufrollvorrichtung verbunden ist, das in den Sperrklinken-Freigabearm (420) eingreift, wenn sich die Spannvorrichtung im Verstaumodus befindet.
     
    10. Spannvorrichtung nach Anspruch 1, wobei:

    die Spannvorrichtung (1) über einen Verstaumodus und einen Spannmodus verfügt;

    die Spannvorrichtung (1) ferner ein Freigabeelement (160) der Aufrollvorrichtung aufweist, das drehend außer Eingriff mit einem Sperrklinken-Freigabearm (420) der Aufrollvorrichtung (400) vorgespannt ist; und,

    wobei in der Verstauposition der Griff (100) das Freigabeelement (160) der Aufrollvorrichtung in Eingriff mit dem Sperrklinken-Freigabearm (420) drückt.


     


    Revendications

    1. Dispositif de tension (1) comprenant :

    une poignée (100) reliée fonctionnellement à un arbre d'entraînement (300) par un ensemble d'embrayage (200), le mouvement de rotation de la poignée (100) étant communiqué à l'arbre d'entraînement (300) par l'ensemble d'embrayage (200) jusqu'à ce que l'ensemble d'embrayage (200) atteigne une limite de couple ;

    caractérisé en ce que :

    l'ensemble d'embrayage (200) comprend au moins un élément de frottement (210), un cliquet (110) et un pignon d'entraînement (260), le cliquet (110) étant relié fonctionnellement à la poignée (100) et communiquant un mouvement de rotation de la poignée (100) au pignon d'entraînement (260), et l'élément de frottement (210) communiquant la rotation du pignon d'entraînement (260) à l'arbre d'entraînement (300) jusqu'à la limite de couple ; et

    le dispositif comprenant en outre au moins un rétracteur (400) pouvant être actionné en rotation par l'arbre d'entraînement (300), le rétracteur (400) comprenant un cliquet de rétracteur (430), un pignon de rétracteur (440), une sangle (410) et une bobine de rétracteur (450), le rétracteur comprenant un mode verrouillé où le cliquet de rétracteur (430) vient en prise avec le pignon de rétracteur (440), permettant ainsi à la sangle (410) d'être rétractée, mais pas retirée de la bobine de rétracteur (450), et le rétracteur comprenant un mode déverrouillé où le cliquet de rétracteur (430) ne vient pas en prise avec le pignon de rétracteur (440), permettant ainsi à la sangle (410) d'être rétractée et retirée de la bobine de rétracteur (450).


     
    2. Dispositif de tension (1) selon la revendication 1, dans lequel l'arbre d'entraînement (300) est directement relié à un arbre du rétracteur (400).
     
    3. Dispositif de tension (1) selon la revendication 1, dans lequel l'ensemble d'embrayage (200) comprend en outre un élément de compression (220) permettant de comprimer l'élément de frottement (210) entre l'élément d'entraînement (260) et l'arbre d'entraînement (300).
     
    4. Dispositif de tension selon (1) la revendication 3, dans lequel l'élément de compression (220) est réglable.
     
    5. Dispositif de tension (1) selon la revendication 1, dans lequel l'ensemble d'embrayage (200) comprend en outre un élément de compression (220) permettant de comprimer l'élément de frottement (210) et le pignon d'entraînement (260), permettant ainsi le réglage de la quantité de force prédéterminée.
     
    6. Dispositif de tension (1) selon la revendication 1,
    le dispositif de tension (1) présentant deux modes ;
    le dispositif de tension (1) comprenant en outre un moyeu (1190) comportant un indicateur d'état (1180), le moyeu (1190) étant sollicité en rotation pour afficher l'indicateur d'état (1180) ;
    la poignée (100) poussant le moyeu (1190) à cacher l'indicateur d'état (1180) lorsqu'elle est mise dans l'un des deux modes.
     
    7. Dispositif de tension (1) selon la revendication 6, dans lequel le moyeu (190) est relié en rotation à un élément de libération de rétracteur (160) qui vient en prise avec un bras de libération de cliquet (420) lorsque le dispositif de tension (1) est dans l'un des les deux modes.
     
    8. Dispositif de tension (1) selon la revendication 1,
    le dispositif de tension (1) présentant un mode de rangement et un mode de tension ;
    le dispositif de tension (1) comprenant en outre un moyeu (190) comportant un indicateur d'état (180), le moyeu (190) étant sollicité en rotation pour que l'indicateur d'état affiche un état sûr, en mode tension ; et
    la poignée (100) poussant le moyeu (190) pour que l'indicateur d'état affiche un état dangereux, en mode de rangement.
     
    9. Dispositif de tension (1) selon la revendication 8, dans lequel le moyeu (190) est relié en rotation à un élément de libération de rétracteur (160) qui vient en prise avec un bras de libération de cliquet (420) lorsque le dispositif de tension est en mode de rangement.
     
    10. Dispositif de tension selon la revendication 1,
    le dispositif de tension (1) présentant un mode de rangement et un mode de tension ;
    le dispositif de tension (1) comprenant en outre un élément de libération de rétracteur (160) qui est sollicité en rotation hors de prise avec un bras de libération de cliquet (420) du rétracteur (400) ; et
    la poignée (100) poussant l'élément de libération de rétracteur (160) à venir en prise avec le bras de libération de cliquet (420), dans la position de rangement.
     




    Drawing





























    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description