(19)
(11)EP 3 391 765 B1

(12)EUROPEAN PATENT SPECIFICATION

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

(21)Application number: 18166784.1

(22)Date of filing:  11.04.2018
(51)International Patent Classification (IPC): 
A42B 3/06(2006.01)

(54)

SAFETY HELMET WITH ROTARY IMPACT BUFFERING FUNCTION

SCHUTZHELM MIT DREHSCHLAGABSORPTION

CASQUE DE SÉCURITÉ AVEC FONCTION D'ABSORPTION D'IMPACTS ROTATIFS


(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: 18.04.2017 CN 201720409239 U
14.08.2017 CN 201710693725
18.10.2017 EP 17197035
14.03.2018 CN 201810210306

(43)Date of publication of application:
24.10.2018 Bulletin 2018/43

(73)Proprietor: Ku, Cheng-Huei
Beilun District 315800 Ningbo City, Zhejiang Province (CN)

(72)Inventor:
  • Ku, Cheng-Huei
    Beilun District 315800 Ningbo City, Zhejiang Province (CN)

(74)Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)


(56)References cited: : 
WO-A1-2015/177747
US-A1- 2015 089 724
US-A1- 2014 096 311
  
      
    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 OF THE INVENTION


    Technical Field



    [0001] The invention relates to the field of safety protection, in particular to a safety helmet with a rotary impact buffering function.

    Description of Related Art



    [0002] Safety helmets are common safety protection articles; the utility model with the Chinese patent application No. CN201520252101.8 discloses a safety helmet which comprises a safety helmet shell, a safety helmet liner, a fixing endpoint, helmet ribbons, a fixing buckle and a fixing ring, wherein the safety helmet liner made of an elastic material is fixed in the safety helmet shell through an outer ring buckle, the fixing endpoint is arranged at the top end, close to the safety helmet shell, of the safety helmet liner, and the fixing buckle is arranged at the top end in the safety helmet shell. Traditional safety helmets are mainly used for protecting the heads of users against normal impact on the safety helmets from the outside; however, actually, when accidents happen, the probability that the safety helmets purely bear normal impact force is low, on most occasions, besides the normal impact force, tangential impact force is also applied to the safety helmets, the safety helmets are likely to rotate by a certain angle under the effect of the tangential impact force, and consequentially the heads of users are prone to being bruised. On this account, a safety helmet with a rotary impact buffering function, which can well buffer external rotary impact force and protect the heads of users against bruises when suffering from the rotary impact of external force, is urgently to be provided. Further prior art can be found in US 2015/089724 A1, WO 2015/177747 A1 and US 2014/096311 A1.

    BRIEF SUMMARY OF THE INVENTION



    [0003] To overcome the defects that existing safety helmets are poor in capacity to bear the rotary impact of external force and cannot effectively protect the heads of users against bruises when suffering from the rotary impact of external force, the invention provides a safety helmet with a rotary impact buffering function, which can well buffer external rotary impact force and effectively protect the heads of users against bruises when suffering from the rotary impact of external force.

    [0004] The present invention is defined by the appended independent claim. The dependent claim is directed to optional features and a preferred embodiment.

    [0005] According to the specific technical scheme of the invention, a safety helmet with a rotary impact buffering function comprises the features of claim 1. In the invention, the rotary impact buffering device is arranged between the shell and the elastic liner of the safety helmet and is capable of elastically deforming in the normal direction of the safety helmet and also capable of elastically deforming in the tangential direction of the safety helmet. When the safety helmet is impacted by external force, the shell has the tendency to rotate relative to the elastic liner under the effect of the component force applied to the shell in the tangential direction; however, in the invention, the rotary impact buffering device enabling the shell to rotate relative to the elastic liner is arranged between the shell and the elastic liner, through tangential deformation of the rotary impact buffering device, the shell can rotate relative to the elastic liner by a certain angle on the premise of keeping the elastic liner unmoved relatively, so that a rotary impact buffering function is achieved, and impact to users from external force is greatly reduced. In addition, the rotary impact buffering device deforms within a certain range, after the shell of the safety helmet rotates relative to the elastic liner by a certain angle, the anti-rotation damping force of the rotary impact buffering device is increased greatly, and thus the rotation angle of the shell relative to the elastic liner is controlled within a certain range. In this way, the defects that existing safety helmets are poor in capacity to bear the rotary impact of external force and cannot effectively protect heads against bruises when suffering from the rotary impact of external force are overcome, and the protection effect of the safety helmet on users is greatly improved.

    [0006] Further in the invention, the safety helmet is structurally provided with the plastic nail holders connected with the shell and the elastic washers connected with the elastic liner, the plastic nail holders and the elastic washers are connected through the plastic nails, and the plastic nails are fixed relative to the elastic washers. As the outer diameter of the nail rods of the plastic nails is far smaller than the diameter of the small-diameter sections of the outer step holes, the plastic nail holders and the elastic washers can transversely slide within a certain range, part of the buffering displacement for the shell to rotate relative to the elastic liner is formed accordingly, the anti-disengagement buckle heads are used for preventing the nail rods from disengaging from the plastic nail holders, and thus connection between the plastic nail holders and the elastic washers is ensured. In the description, the inner end refers to the end close to the elastic liner, and the outer end refers to the end, close to the shell, of the rotary impact buffering device. Furthermore, the elastic washers can compressively deform in the longitudinal direction or the transverse direction when being impacted by external force, the compressive deformation in the longitudinal direction can buffer impact in the normal direction of the safety helmet, and the compressive deformation in the transverse direction forms the other part of the buffering displacement for the shell to rotate relative to the elastic liner. In this way, the plastic nail holders, the plastic nails and the elastic washers of the buffering components are matched with the elastic liner to achieve multi-buffering protection of normal impact force and rotary (tangential) impact force, and thus a better protection effect is achieved. The elastic washers are connected with the plastic nail holders inlaid in the inner side of the shell through the plastic nails, and thus assembling and disassembling are convenient and fast.

    [0007] Further in the invention, the effective contact areas between the elastic washers and the plastic nail holders and the effective contact areas between the elastic washers and the elastic liner can be effectively increased through the inner convex rings and the outer convex rings, and the structural stability of the buffering components under the effect of tangential force is improved; and under the combined effect of the inner circular grooves and the outer circular grooves, the side walls of the elastic washers are each of a corrugated structure, and thus the buffering performance of the buffering components is improved.

    [0008] Preferably, the contact surface between each platen and the corresponding elastic washer is of a concave spherical structure, and the inner end face of each elastic washer is of a convex spherical structure. The platens are matched with the elastic washers through spherical contact, and the elastic washers are matched with the elastic liner through spherical contact, so that the structural stability of the buffering components under the effect of tangential force is improved, and the buffering performance of the buffering components is improved.

    [0009] As an optional example, the rotary impact buffering device comprises a plurality of buffering assemblies. Each buffering assembly comprises a mounting plate and buffering columns, wherein the mounting plate is provided with a plurality of columnar buffering washers and connected with the inner side of the shell, the mounting plate is also provided with mounting holes, the number of mounting holes is the same as that of the buffering washers, and the buffering washers are arranged in the mounting holes in a one-to-one corresponding mode; the number of the buffering columns is the same as that of the buffering washers, and the buffering columns are embedded in inner holes of the buffering washers in a one-to-one corresponding mode; and the length of the buffering columns is smaller than the depth of the inner holes of the buffering washers, the height of the buffering washers is greater than the thickness of the mounting plate, and the inner ends of the buffering washers is connected with the elastic liner. When the safety helmet of this structure is impacted by external force, the buffering washers and the buffering columns of the buffering assemblies are matched with the elastic liner to achieve multi-buffering protection against normal impact force and rotary (tangential) impact force, and thus the buffering effect is good. The mounting plate of each buffering assembly is provided with a plurality of buffering washers connected with the inner side of the shell, the buffering columns are inlaid in the inner holes of the buffering washers, in this way, buffering protection is achieved through elastic deformation of the buffering washers, the elastic deformation of the buffering washers is controlled within a certain range, and thus the buffering washers can restore easily.

    [0010] In one example, a plurality of outer circular grooves are formed in the outer periphery of each buffering washer, a plurality of inner grooves are formed in the inner periphery of each buffering washer, the outer grooves and the inner grooves are arranged in a staggered mode in the axis direction of each buffering washer. Under the combined effect of the outer grooves and the inner grooves, the side walls of the buffering washers are each of a corrugated structure, and thus the buffering performance of the buffering washers is improved.

    [0011] In one example, counter bores are formed in the inner side of the shell, the number of the counter bores is the same as that of the buffering washers, and the counter bores are in one-to-one correspondence with the buffering washers; outer flanges which are matched with the counter bores are arranged at the outer ends of the buffering washers, inner flanges are arranged at the inner ends of the buffering washers, and the buffering washers are connected with the elastic liner through the inner flanges. The connection strength of the buffering washers and the shell can be improved through the outer flanges of the buffering washers, and the connection strength of the buffering washers and the head lock, as well as between the buffering washers and the elastic liner, can be improved through the inner flanges of the buffering washers.

    [0012] In one example, the rotary impact buffering device comprises a notch, a plurality of elastic supporting columns and a buffering pad, wherein the notch is formed in the inner side of the shell, the outer ends of the elastic supporting columns are connected with the bottom surface of the notch, the buffering pad is provided with positioning holes, the number of the positioning holes is the same as that of the elastic supporting columns, the buffering pad is arranged in the notch, the outer ends of the elastic supporting columns are sleeved with the positioning holes in a one-to-one corresponding mode, and the inner ends of the elastic supporting columns are connected with the elastic liner. Through the structure, when the safety helmet suffers from the rotary impact of external force, the elastic supporting columns and the buffering pad of the buffering assembly are matched with the elastic liner to achieve multi-buffering protection against impact force and rotary impact force, and the elastic supporting columns can restore easily through the buffering pad.

    [0013] In one example, the safety helmet with a rotary impact buffering function further comprises U-shaped buffering strips, wherein one end of each U-shaped buffering strip is connected with the elastic liner, the other end of each U-shaped buffering strip is connected with one end of a connecting strip, and a buckle head is arranged at the other end of each connecting strip, buckle holes matched with the buckle heads are formed in the inner side of the shell, and the buckle heads are correspondingly clamped in the buckle holes. The elastic liner is integrally connected with the shell through the U-shaped buffering strips and the connecting strips, on the one hand, the U-shaped buffering strips can form a buffering structure between the elastic liner and the shell, so that a buffering function is achieved when the safety helmet suffers from tangential force, and the buffering effect is further improved when the safety helmet is impacted by rotary force; and on the other hand, excessive sliding between the elastic liner and the shell can be limited. The buckle heads are matched with the buckle holes to achieve fixation, and thus disassembling and assembling are convenient.

    [0014] In one example, the elastic liner is of a multi-band structure and comprises a U-shaped liner band located on the head and an annular liner band surrounding the periphery of the head; the number of the U-shaped buffering strips is two, and the two U-shaped buffering strips are separately arranged on the annular liner band located on the left side and the right side of the rear portion of the safety helmet; and two binding strips are further correspondingly arranged at the joints of the U-shaped buffering strips and the elastic liner, and the other ends of the binding strips are connected with a head lock.

    [0015] In one example, the U-shaped buffering strips are arranged on the left side and the right side of the rear portion of the safety helmet, the joints of the U-shaped buffering strips and the elastic liner are located at the same positions with the joints of the binding strips and the elastic liner, the head lock is used for adjusting the tightness of the binding strips, and through the proper tightness between the binding strips and the head, the head can be protected when the safety helmet suffers from rotary impact of external force.

    [0016] The safety helmet of this example has beneficial effects. The rotary impact buffering device is arranged between the shell and the elastic liner of the safety helmet of this example so that tangential component force generated when the safety helmet is impacted by external force can be greatly reduced, and impact to users from external force is greatly reduced. Furthermore, deformation of the rotary impact buffering device is in a set range, so that when the shell of the safety helmet rotates relative to the elastic liner by a certain angle, the anti-rotation damping force of the rotary impact buffering device is greatly increased, and thus the rotation angle of the shell relative to the elastic liner is controlled within a certain range. In this way, the defects that existing safety helmets are poor in capacity to bear the rotary impact of external force and cannot effectively protect the head against bruises when suffering from the rotary impact of external force are overcome, and the protection effect of the safety helmet on users is greatly improved.

    BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS



    [0017] 

    FIG. 1 is a structural sectional view of the first embodiment of the invention;

    FIG. 2 is a structural sectional view of a buffering component in the first embodiment of the invention;

    FIG. 3 is a structural sectional view of the second embodiment not forming part of the claimed invention;

    FIG. 4 is a structural sectional view of a buffering assembly in the second embodiment;

    FIG. 5 is a structural sectional view of the third embodiment not forming part of the claimed invention; and

    FIG. 6 is a structural bottom view of the invention.



    [0018] In the FIGs: 1, shell; 2, elastic liner; 3, binding strip; 4, head lock; 5, buffering assembly; 6, buffering washer; 7, double-faced adhesive tape; 8, mounting plate; 9, buffering column; 10, mounting hole; 11, outer groove; 12, inner groove; 13, counter bore; 14, outer flange; 15, inner flange; 16, buffering component; 17, outer step hole; 18, plastic nail holder; 19, plastic nail; 20, inner step hole; 21, elastic washer; 22, platen; 23, nail rod; 24, anti-disengaging buckle head; 25, inner convex ring; 26, outer convex ring; 27, outer circular groove; 28, inner circular groove; 29, notch; 30, elastic supporting column; 31, positioning hole; 32, buffering pad; 33, U-shaped buffering strip; 34, buckle head; 35, connecting strip; 36, buckle hole; 37, U-shaped liner band; 38, annular liner band.

    DETAILED DESCRIPTION OF THE INVENTION



    [0019] A further description of the invention is given with accompanying drawings as follows.

    First Embodiment



    [0020] As is shown in FIG. 1 and FIG. 2, in the first embodiment of the invention, a safety helmet with a rotary impact buffering function comprises a shell 1 and an elastic liner 2 arranged in the shell, and the elastic liner is made of a PC board or foam. A gap is formed between the shell and the elastic liner, and a rotary impact buffering device enabling the shell to rotate relative to the elastic liner is arranged between the shell and the elastic liner. The rotary impact buffering device comprises twenty-one buffering components 16. Each buffering component comprises a plastic nail holder 18, a columnar elastic washer 21 and a plastic nail 19, wherein the plastic nail holder is inlaid in the inner side of the shell and provided with an outer step hole 17 with the small-diameter end located at the inner end, the elastic washer is provided with an inner step hole 20 with the small-diameter end located at the outer end, the outer end face of the elastic washer is tightly attached to the inner end face of the plastic nail holder, and the elastic washer and the plastic nail holder are connected through the plastic nail. Each plastic nail comprises a platen 22, a nail rod 23 and an anti-disengaging buckle head 24, wherein the platen is located in the large-diameter section of the corresponding inner step hole, the contact surface between the platen and the elastic washer is of a concave spherical structure, the nail rod penetrates through the small-diameter section of the corresponding inner step hole and the small-diameter section of the corresponding outer step hole, one end of the nail rod is connected with the platen, the diameter of the small-diameter section of the corresponding inner step hole is matched with the outer diameter of the nail rod, and the diameter of the small-diameter section of the corresponding outer step hole is greater than the outer diameter of the nail rod, and the anti-disengaging buckle head is located in the large-diameter section of the corresponding outer step hole and connected with the other end of the nail rod. In the invention, the platen, the nail rod and the anti-disengaging buckle head of each plastic nail are formed integrally, and the elastic washers are made of silica gel. The inner end face of each elastic washer is of a convex spherical structure, and the inner end face of each elastic washer is bonded with the elastic liner. An inner convex ring 25 and an outer convex ring 26 are separately arranged on the outer peripheries of the two ends of each elastic washer, and the elastic washers are bonded with the elastic liner through the inner convex rings. Six outer circular grooves 27 are formed in the outer periphery of each elastic washer between the corresponding inner convex ring and the corresponding outer convex ring, and three inner circular grooves 28 are formed in the inner periphery of the large-diameter section of the inner step hole of each elastic washer.

    [0021] The safety helmet with a rotary impact buffering function further comprises U-shaped buffering strips 33, wherein one end of each U-shaped buffering strip is connected with the elastic liner, the other end of each U-shaped buffering strip is integrally connected with one end of a connecting strip 35, a buckle head 34 is arranged at the other end of each connecting strip, buckle holes 36 matched with the buckle heads are formed in the inner side of the shell, and the buckle heads are correspondingly clamped in the buckle holes. In the embodiment, the elastic liner is of a two-band structure and comprises a U-shaped liner band 37 located on the head and an annular liner band 38 (as is shown in FIG.6) surrounding the periphery of the head; the number of the U-shaped buffering strips is two, and the two U-shaped buffering strips are separately arranged on the annular liner band located on the left side and the right side of the rear portion of the safety helmet; and two binding strips 3 are further correspondingly arranged at the joints of the U-shaped buffering strips and the elastic liner, and the other ends of the binding strips are connected with a head lock 4.

    Second Embodiment



    [0022] As is shown in FIG. 3 and FIG. 4, in the second embodiment, the rotary impact buffering device comprises seven buffering assemblies 5. Each buffering assembly comprises a mounting plate 8 and buffering columns 9, wherein the mounting plate 8 is provided with three columnar buffering washers 6 and connected with the inner side of the shell through double-faced adhesive tape 7, the mounting plate is also provided with mounting holes 10, the number of mounting holes is the same as that of the buffering washers 6, and the buffering washers are arranged in the mounting holes in a one-to-one corresponding mode; the number of the buffering columns is the same as that of the buffering washers, and the buffering columns are embedded in inner holes of the buffering washers in a one-to-one corresponding mode; the buffering washers and the buffering columns are made of silica gel, the length of the buffering columns is smaller than the depth of the inner holes of the buffering washers, the height of the buffering washers is greater than the thickness of the mounting plate, and the inner ends of the buffering washers are bonded with the elastic liner. Three outer grooves 11 are formed in the outer periphery of each buffering washer, two inner grooves 12 are formed in the periphery of the inner hole side of each buffering washer, and the outer grooves and the inner grooves are arranged in a staggered mode in the axis direction of each buffering washer. Counter bores 13 are formed in the inner side of the shell, the number of the counter bores is the same as that of the buffering washers, and the counter bores are in one-to-one correspondence with the buffering washers. Outer flanges 14 which are matched with the counter bores are arranged at the outer ends of the buffering washers, inner flanges 15 are arranged at the inner ends of the buffering washers, and the buffering washers are bonded with the elastic liner through the inner flanges. The second embodiment is the same as the first embodiment in other aspects.

    Third Embodiment



    [0023] As is shown in FIG. 5, in the third embodiment, the rotary impact buffering device comprises a notch 29, twenty-four elastic supporting columns 30 and a buffering pad 32, wherein the notch is formed in the inner side of the shell, the outer ends of the twenty-four elastic supporting columns are connected with the bottom surface of the notch, the buffering pad is provided with positioning holes 31, and the number of the positioning holes is the same as that of the elastic supporting columns; and the buffering pad is arranged in the notch, the outer ends of the elastic supporting columns are sleeved with the positioning holes in a one-to-one corresponding mode, and the inner ends of the elastic supporting columns are bonded with the elastic liner. In the embodiment, the elastic supporting columns are made of nylon, the cross section of the elastic supporting columns is in a regular hexagon shape, and the buffering pad 32 is made of silica gel. The third embodiment is the same as the first embodiment in other aspects.

    [0024] Tests show that compared with traditional safety helmets, the safety helmet with a rotary impact buffering function in the three embodiments has the following advantages:

    [0025] under the conditions that the falling height is 1m, the falling speed is 4.43 m/s and the rotational accelerations at test points are 4065(r/s2), 5527 (r/s2) and 6548 (r/s2) separately, damage to the safety helmet with a rotary impact buffering function in the three embodiments is reduced by 26.4-45.7%;

    [0026] under the conditions that the falling height is 1.5m, the falling speed is 5.42 m/s and the rotational accelerations at test points are 5683(r/s2), 6294 (r/s2) and 7094 (r/s2) separately, damage to the safety helmet with a rotary impact buffering function in the three embodiments is reduced by 33.1-32.3%.

    [0027] According to the safety helmet of the invention, the rotary impact buffering device is arranged between the shell and the elastic liner and is capable of elastically deforming in the normal direction of the safety helmet and also capable of elastically deforming in the tangential direction of the safety helmet. When the safety helmet is impacted by external force, the shell has the tendency to rotate relative to the elastic liner under the effect of the component force applied to the shell in the tangential direction; however, the rotary impact buffering device enabling the shell to rotate relative to the elastic liner is arranged between the shell and the elastic liner of the invention, through tangential deformation of the rotary impact buffering device, the shell can rotate relative to the elastic liner by a certain angle on the premise of keeping the elastic liner unmoved relatively, so that a rotary impact buffering function is achieved, and the impact to users from external force is greatly reduced. In addition, the rotary impact buffering device deforms within a certain range, after the shell of the safety helmet rotates relative to the elastic liner by a certain angle, the anti-rotation damping force of the rotary impact buffering device is increased greatly, and thus the rotation angle of the shell relative to the elastic liner is controlled within a certain range. Furthermore, the elastic liner is integrally connected with the shell through the U-shaped buffering strips and the connecting strips, and thus the buffering effect is further improved when the safety helmet is impacted by rotary force. In this way, the defects that existing safety helmets are poor in capacity to bear the rotary impact of external force and cannot effectively protected the heads of users against bruises when suffering from the rotary impact of external force are overcome, and the protection effect of the safety helmet on users is greatly improved.

    [0028] Besides the above embodiments, those skilled in the field can create novel embodiments by reselecting and recombining the technical characteristics or technical data of the invention within the scope defined by the claims.


    Claims

    1. A safety helmet with a rotary impact buffering function, comprising a shell (1); further comprising an elastic liner (2) arranged in the shell (1), wherein a gap is formed between the shell (1) and the elastic liner (2), and a rotary impact buffering device enabling the shell (1) to rotate relative to the elastic liner (2) is arranged between the shell (1) and the elastic liner (2),
    characterized in that the rotary impact buffering device comprises a plurality of buffering components (16); each buffering component (16) comprises a plastic nail holder (18), a columnar elastic washer (21) and a plastic nail (19), wherein the plastic nail holder (18) is inlaid in the inner side of the shell (1) and provided with an outer step hole (17) with the small-diameter end located at the inner end, the elastic washer (21) is provided with an inner step hole (20) with the small-diameter end located at the outer end, the outer end face of the elastic washer (21) is tightly attached to the inner end face of the plastic nail holder (18), and the elastic washer (21) and the plastic nail holder (18) are connected through the plastic nail (19); each plastic nail (19) comprises a platen (22), a nail rod (23) and an anti-disengaging buckle head (24), wherein the platen (22) is located in the large-diameter section of the corresponding inner step hole, the nail rod penetrates through the small-diameter section of the corresponding inner step hole (20) and the small-diameter section of the corresponding outer step hole (17), one end of the nail rod (23) is connected with the platen (22), the diameter of the small-diameter section of the corresponding inner step hole (20) is matched with the outer diameter of the nail rod (23), and the diameter of the corresponding small-diameter section of the outer step hole (17) is greater than the outer diameter of the nail rod (23), and the anti-disengaging buckle head (24) is located in the large-diameter section of the outer step hole (17) and connected with the other end of the nail rod (23), and the inner end face of the elastic washer (21) is connected with the elastic liner (2),
    wherein an inner convex ring (25) and an outer convex ring (26) are separately arranged on the outer peripheries of the two ends of each elastic washer (21), the elastic washers (21) are connected with the elastic liner (2) through the inner convex rings (25), a plurality of outer circular grooves (27) are formed in the outer periphery of each elastic washer (21) between the corresponding inner convex ring (25) and the corresponding outer convex ring (25), and a plurality of inner circular grooves (28) are formed in the inner periphery of the large-diameter section of the inner step hole (20) of each elastic washer (21).
     
    2. The safety helmet with a rotary impact buffering function according to Claim 1, characterized in that the contact surface between each platen (19) and the corresponding elastic washer (21) is of a concave spherical structure, and the inner end face of each elastic washer is (21) of a convex spherical structure.
     


    Ansprüche

    1. Schutzhelm mit einer rotierenden Stoßdämpferfunktion, umfassend eine Schale (1); weiter umfassend eine elastische Auskleidung (2), die in der Schale (1) angeordnet ist, wobei zwischen der Schale (1) und der elastischen Auskleidung (2) ein Spalt ausgebildet ist, und zwischen der Schale (1) und der elastischen Auskleidung (2) eine rotierende Stoßdämpfervorrichtung angeordnet ist, die es der Schale (1) erlaubt, relativ zu der elastischen Auskleidung (2) zu rotieren,
    dadurch gekennzeichnet, dass die rotierende Stoßdämpfervorrichtung eine Vielzahl von Dämpferkomponenten (16) umfasst; jede Dämpferkomponente (16) einen Kunststoffnagelhalter (18), eine säulenförmige elastische Unterlegscheibe (21) und einen Kunststoffnagel (19) umfasst, wobei der Kunststoffnagelhalter (18) in die Innenseite der Schale (1) eingelegt und mit einem äußeren Stufenloch (17) bereitgestellt ist, wobei sich das Ende mit kleinem Durchmesser am inneren Ende befindet, die elastische Unterlegscheibe (21) mit einem inneren Stufenloch (20) bereitgestellt ist, wobei sich das Ende mit kleinem Durchmesser am äußeren Ende befindet, die äußere Stirnfläche der elastischen Unterlegscheibe (21) fest an der inneren Stirnfläche des Kunststoffnagelhalters (18) befestigt ist und die elastische Unterlegscheibe (21) und der Kunststoffnagelhalter (18) durch den Kunststoffnagel (19) verbunden sind; jeder Kunststoffnagel (19) eine Andruckplatte (22), einen Nagelstab (23) und einen ausklinksicheren Schnallenkopf (24) umfasst, wobei sich die Andruckplatte (22) in dem Abschnitt mit großem Durchmesser des entsprechenden inneren Stufenlochs befindet, der Nagelstab durch den Abschnitt mit kleinem Durchmesser des entsprechenden inneren Stufenlochs (20) und den Abschnitt mit kleinem Durchmesser des entsprechenden äußeren Stufenlochs (17) hindurchtritt, ein Ende des Nagelstabs (23) mit der Andruckplatte (22) verbunden ist, der Durchmesser des Abschnitts mit kleinem Durchmesser des entsprechenden inneren Stufenlochs (20) auf den Außendurchmesser der Nagelstange (23) abgestimmt ist, und der Durchmesser des entsprechenden Abschnitts mit kleinem Durchmesser des äußeren Stufenlochs (17) größer als der Außendurchmesser der Nagelstange (23) ist, und der ausklinksichere Schnallenkopf (24) in dem Abschnitt mit großem Durchmesser des äußeren Stufenlochs (17) angeordnet und mit dem anderen Ende der Nagelstange (23) verbunden ist, und die innere Stirnseite der elastischen Unterlegscheibe (21) mit der elastischen Auskleidung (2) verbunden ist,
    wobei ein innerer konvexer Ring (25) und ein äußerer konvexer Ring (26) getrennt an den äußeren Umfängen der beiden Enden jeder elastischen Unterlegscheibe (21) angeordnet sind, wobei die elastischen Unterlegscheiben (21) mit der elastischen Auskleidung (2) durch die inneren konvexen Ringe (25) verbunden sind, eine Vielzahl von äußeren kreisförmigen Nuten (27) in dem äußeren Umfang jeder elastischen Unterlegscheibe (21) zwischen dem entsprechenden inneren konvexen Ring (25) und dem entsprechenden äußeren konvexen Ring (25) gebildet ist, und eine Vielzahl von inneren kreisförmigen Nuten (28) in dem inneren Umfang des Abschnitts mit großem Durchmesser des inneren Stufenlochs (20) jeder elastischen Unterlegscheibe (21) gebildet ist.
     
    2. Schutzhelm mit einer rotierenden Stoßdämpferfunktion nach Anspruch 1, dadurch gekennzeichnet, dass die Kontaktfläche zwischen jeder Andruckplatte (19) und der entsprechenden elastischen Unterlegscheibe (21) eine konkav-kugelförmige Struktur aufweist und die innere Endfläche jeder elastischen Unterlegscheibe (21) eine konvexkugelförmige Struktur aufweist.
     


    Revendications

    1. Casque de sécurité avec fonction d'atténuation d'impact rotatif, comprenant une coque (1) ; comprenant en outre une doublure élastique (2) agencée dans la coque (1), dans lequel un espace est formé entre la coque (1) et la doublure élastique (2), et un dispositif d'atténuation d'impact rotatif permettant à la coque (1) de tourner par rapport à la doublure élastique (2) est agencé entre la coque (1) et la doublure élastique (2),
    caractérisé en ce que le dispositif d'atténuation d'impact rotatif comprend une pluralité de composants d'atténuation (16) ; chaque composant d'atténuation (16) comprend un dispositif de maintien à clou en plastique (18), une rondelle élastique en colonne (21) et un clou en plastique (19), dans lequel le dispositif de maintien à clou en plastique (18) est incrusté dans le côté interne de la coque (1) et muni d'un trou étagé externe (17) avec l'extrémité de petit diamètre située au niveau de l'extrémité interne, la rondelle élastique (21) est munie d'un trou étagé interne (20) avec l'extrémité de petit diamètre située au niveau de l'extrémité externe, la face d'extrémité externe de la rondelle élastique (21) est attachée fermement à la face d'extrémité interne du dispositif de maintien à clou en plastique (18), et la rondelle élastique (21) et le dispositif de maintien à clou en plastique (18) sont raccordés par le biais du clou en plastique (19) ; chaque clou en plastique (19) comprend un plateau (22), une tige de clou (23), et une tête de boucle anti-décrochement (24), dans lequel le plateau (22) est situé dans la section de grand diamètre du trou étagé interne correspondant, la tige de clou pénètre à travers la section de petit diamètre du trou étagé interne (20) correspondant et la section de petit diamètre du trou étagé externe (17) correspondant, une extrémité de la tige de clou (23) est raccordée au plateau (22), le diamètre de la section de petit diamètre du trou étagé interne (20) correspondant est mis en correspondance avec le diamètre externe de la tige de clou (23), et le diamètre de la section de petit diamètre correspondante du trou étagé externe (17) est plus grand que le diamètre externe de la tige de clou (23), et la tête de boucle anti-décrochement (24) est située dans la section de grand diamètre du trou étagé externe (17) et raccordée à l'autre extrémité de la tige de clou (23), et la face d'extrémité interne de la rondelle élastique (21) est raccordée à la doublure élastique (2),
    dans lequel une bague convexe interne (25) et une bague convexe externe (26) sont agencées séparément sur les périphéries externes des deux extrémités de chaque rondelle élastique (21), les rondelles élastiques (21) sont raccordées à la doublure élastique (2) par le biais des bagues convexes internes (25), une pluralité de rainures circulaires externes (27) sont formées dans la périphérie externe de chaque rondelle élastique (21) entre la bague convexe interne (25) correspondante et la bague convexe externe (25) correspondante, et une pluralité de rainures circulaires internes (28) sont formées dans la périphérie interne de la section de grand diamètre du trou étagé interne (20) de chaque rondelle élastique (21).
     
    2. Casque de sécurité avec fonction d'atténuation d'impact rotatif selon la revendication 1, caractérisé en ce que la surface de contact entre chaque plateau (19) et la rondelle élastique (21) correspondante est d'une structure sphérique concave, et la face d'extrémité interne de chaque rondelle élastique (21) est une structure sphérique convexe.
     




    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