Steering wheel airbag module

Abstract

The embodiment of the present specification provides a kind of steering wheel air bag module, air bag module includes shell and gas generator, space for accommodating folded bag is formed in shell, gas generator is at least partially inserted into bag, the flange of the outer periphery of gas generator extends, flange is at shell outside, air bag module further includes several dampers, damper includes pin, spring and buckle, the rod portion of pin passes through shell and flange and is matched with buckle, the normal motion of gas generator can be relative to rod portion, spring is sleeved on the rod portion, the two ends of spring are respectively with buckle and flange abut, so that the axial motion of gas generator can be relative to shell along the rod portion.Gas generator is always in the position of suspension outside shell, when steering wheel vibrates, gas generator and steering wheel produce resonance to offset, realize the requirement of acceptable vibration frequency range, reduce the vibration amplitude of steering wheel.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of steering wheels, in particular to a steering wheel airbag module. BACKGROUND

[0002] The steering wheel is an essential component of a car, and the driver realizes the steering operation of the car through the steering wheel. At present, the connection between the steering wheel and the driver airbag is mostly through an intermediate click plate. The click plate and the steering wheel skeleton are fixed by tightening the disc head bolt. The click plate is provided with a damping mechanism and a spring. The damping mechanism controls and buffers the vibration of the airbag during the driving of the car. During the driving of the vehicle, especially when driving on a bumpy road, the vehicle will produce a large vibration, and the body column will vibrate and transmit to the steering wheel assembly, causing the steering wheel to vibrate greatly. SUMMARY

[0003] Therefore, the present specification provides a steering wheel airbag module. The gas generator is always in a suspended position outside the shell. When the steering wheel vibrates, the gas generator and the steering wheel resonate to offset each other, achieve the acceptable vibration frequency range requirement, and reduce the vibration amplitude of the steering wheel.

[0004] The present specification provides the following technical solutions: a steering wheel airbag module, the airbag module comprising a shell and a gas generator, the shell being formed with a space for accommodating a folded bag, the gas generator being at least partially inserted into the bag, the gas generator being extended to form a flange around the periphery, the flange being outside the shell, the airbag module further comprising a plurality of dampers,

[0005] The damper comprises a pin, a spring and a buckle, the rod of the pin passing through the shell and the flange and cooperating with the buckle, the gas generator being movable relative to the normal direction of the rod, the spring being sleeved on the rod, the two ends of the spring being in abutment with the buckle and the flange respectively, so that the gas generator is movable along the axial direction of the rod relative to the shell.

[0006] Preferably, the buckle and the pin are detachably fixedly connected.

[0007] Preferably, the buckle comprises a buckle block and a buckle strip, the buckle block being provided with a through hole for the rod to pass through, the buckle block being provided with a receiving cavity, the buckle strip being arranged in the receiving cavity, the receiving cavity being at least partially spatially overlapped with the through hole, so that the buckle strip can be at least partially extended into the through hole, the rod being provided with a recess, and the buckle strip being at least partially embedded in the recess.

[0008] Preferably, the slot is provided with two groups, and an isolation part is formed between the two groups of slots, and the two groups of slots are respectively distributed on opposite sides of the rod part.

[0009] Preferably, the accommodating cavity extends to the outside of the buckle block, the buckle strip is a elastic rod which is symmetrically bent, when the rod part rotates, the isolation part extrudes the buckle strip, so that the buckle strip deforms and moves to the outside of the buckle block.

[0010] Preferably, the buckle member includes a buckle ring, the rod part passes through the buckle ring, the buckle ring extends away from the side of the spring to form at least two groups of elastic hooks, the elastic hooks are inclined towards the rod part, the rod part is provided with a clamping groove matched with the elastic hooks, and the elastic hooks are at least partially embedded in the clamping groove.

[0011] Preferably, the buckle member includes a nut, the rod part is at least partially formed with a threaded segment matched with the nut, and the buckle member is screwed with the rod part.

[0012] Preferably, the buckle member is formed with a groove on the side close to the spring, a plurality of limiting blocks are arranged in the groove in a ring shape, and the spring is at least partially embedded between the limiting blocks and the inner wall of the groove.

[0013] Preferably, the damper further includes a damping block, the damping block is arranged between the shell and the flange, and the rod part passes through the damping block.

[0014] Preferably, the damping block is formed with a wavy end face on the side close to the shell and / or the flange.

[0015] Preferably, the damper further includes a rubber sleeve, the rubber sleeve includes a first columnar part and a second columnar part, the first columnar part is at least partially covered on the disc head part of the pin, the second columnar part is at least partially covered on the rod part, the first columnar part is at least partially in contact with the shell, and the second columnar part is at least partially in contact with the damping block and / or the flange.

[0016] Preferably, the first columnar part is extended to form a plurality of elastic columns on the side edge close to the second columnar part, and the plurality of elastic columns are uniformly distributed in a ring shape on the second columnar part, and the plurality of elastic columns are in contact with the shell.

[0017] Preferably, the first columnar part extends to form a transition part at the center of one side of the second columnar part, and a plurality of inward recesses are formed on the periphery of the transition part, so that the transition part can be deformed as a whole; a plurality of insertion slots are formed on one side of the transition part close to the shock-absorbing block; and the shock-absorbing block is formed with a plurality of inserts matched with the insertion slots on one side close to the transition part.

[0018] Preferably, the airbag module further comprises a sealing rubber, which is arranged between the gas generator and the shell, and the gas generator and the sealing rubber are in interference with each other.

[0019] Compared with the prior art, the above at least one technical solution adopted by the embodiments of the present application can achieve the beneficial effects at least including:

[0020] By arranging the buckle member and the pin, the buckle member is in a suspended state, the rod of the pin passes through the flange on the shell and the gas generator and cooperates with the buckle member, so that the gas generator can generate normal motion relative to the rod; meanwhile, by arranging the spring between the buckle member and the flange, the gas generator can generate axial motion relative to the shell along the rod, so that the gas generator is always in a suspended position outside the shell; when the steering wheel vibrates, the gas generator resonates with the steering wheel to offset the vibration, so that the acceptable vibration frequency range requirement is met and the vibration amplitude of the steering wheel is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0022] Figure 1 is a sectional view of the airbag module of the steering wheel provided by the present application;

[0023] Figure 2 is a structural schematic view of the rubber sleeve and the buckle member of the airbag module of the steering wheel provided by the present application;

[0024] Figure 3 is a structural schematic view of the rubber sleeve and the pin of the airbag module of the steering wheel provided by the present application;

[0025] Figure 4 is a sectional view of the pin and the buckle member of the airbag module of the steering wheel provided by the present application;

[0026] Figure 5 is a top view of the buckle member of the airbag module of the steering wheel provided by the present application;

[0027] Figure 6 is a schematic view of the internal structure of the buckle block of the steering wheel airbag module provided in the present application;

[0028] Figure 7 is a schematic view of the structure of the buckle provided in Embodiment 2 of the present application;

[0029] Figure 8 is a sectional view of the buckle provided in Embodiment 2 of the present application;

[0030] Figure 9 is a sectional view of the buckle provided in Embodiment 3 of the present application.

[0031] In the figure, 1, housing; 2, gas generator; 3, bag; 4, pin; 401, rod portion; 402, disc head portion; 5, spring; 6, buckle; 601, buckle block; 602, accommodating cavity; 603, buckle strip; 604, through hole; 605, groove; 606, limiting block; 611, buckle ring; 612, buckle hook; 621, nut; 7, rubber sleeve; 701, first columnar portion; 702, second columnar portion; 703, elastic column; 704, transition portion; 705, inwardly recessed portion; 706, insertion slot; 8, sealing rubber; 9, flange; 10, embedding groove; 11, clamping groove; 12, threaded segment; 13, shock-absorbing block. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below with reference to the drawings.

[0033] The above embodiments of the present application are described with reference to the specific examples. However, a person of ordinary skill in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The present application can also be implemented or applied by other different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0034] It is to be understood that the embodiments described herein are illustrative only and the scope of the application should not be deemed limited thereto based on their description in the attached claims. As such, many changes and modifications can occur to those skilled in the art, to which the scope of the application is directed, without departing from the scope and spirit of the application in its aspects. For instance, an apparatus and / or a method is / are contemplated regardless of having any particular number of the so-far-recited aspects of any of the examples, and such apparatus and / or method can be implemented to have two or more of such aspects. Additionally, it is contemplated that an apparatus and / or method might be implemented using either or both of the aspects set forth herein, and further using, in various combinations, aspects not expressly discussed herein.

[0035] It is also to be understood that the present application will be described in terms of a few embodiments only and with reference to the accompanying drawings. These are merely exemplary of the application and are intended to provide an insight into its nature and characteristic. A skilled person will gather from the above description and drawings that the application is not limited to these embodiments alone, and that numerous modifications and changes can be made thereto without departing from the scope and spirit of the application as set forth in the claims.

[0036] Also in the following description, specific details are provided to thoroughly convey a thorough understanding of examples. However, it will be understood by those skilled in the art that the described aspects can be practiced without these specific details.

[0037] At present, the connection between the steering wheel and the driver's airbag is mostly through an intermediate click plate. The click plate and the steering wheel skeleton are fixed by tightening the disc head screw. The damping mechanism and the spring are installed on the click plate. The damping mechanism controls and buffers the vibration of the airbag during driving. However, this fixing method causes abnormal noise between the disc head screw and the steering wheel skeleton. During driving, especially on bumpy roads, the vehicle will vibrate, the body column will vibrate and transmit to the steering wheel assembly, and the airbag module will be difficult to play a role in shock absorption, resulting in a large vibration of the steering wheel.

[0038] The inventor has designed a steering wheel airbag module after extensive and in-depth experiments.

[0039] The technical solutions provided by the embodiments of the present application are described below with reference to the drawings.

[0040] As shown in Figure 1 A steering wheel airbag module, the airbag module includes a housing 1 and a gas generator 2, a space for accommodating a folded bag 3 is formed in the housing 1, the gas generator 2 is at least partially inserted into the bag 3, the outer periphery of the gas generator 2 extends to form a flange 9, the flange 9 is outside the housing 1, the airbag module further includes a plurality of dampers,

[0041] The damper comprises a pin 4, a spring 5 and a buckle 6, the rod 401 of the pin 4 passes through the shell 1 and the flange 9 and cooperates with the buckle 6, the gas generator 2 can move in the normal direction relative to the rod 401, the spring 5 is sleeved on the rod 401, and the two ends of the spring 5 abut against the buckle 6 and the flange 9 respectively, so that the gas generator 2 can move in the axial direction of the rod 401 relative to the shell 1.

[0042] The emitting end of the gas generator 2 is inserted into the capsule bag 3, the outside of the gas generator 2 is provided with the flange 9, the flange 9 is located outside the shell 1, the buckle 6 cooperates with the lower end of the rod 401 of the pin 4, the buckle 6 is in a suspended state, the pin 4 is not locked, the rod 401 of the pin 4 passes through the shell 1 and the flange 9 on the gas generator 2 and cooperates with the buckle 6, so that the gas generator 2 can move in the normal direction relative to the rod 401, and the spring 5 is arranged between the buckle 6 and the flange 9, so that the gas generator 2 can move in the axial direction of the rod 401 relative to the shell 1, so that the gas generator 2 is always in a suspended position outside the shell 1, when the steering wheel vibrates, the gas generator 2 resonates with the steering wheel to offset, the acceptable vibration frequency range requirement is realized, and the vibration amplitude of the steering wheel is reduced.

[0043] It should be noted that the flange 9 is provided with a through groove for the rod 401 of the pin 4 to pass through, the inner diameter of the through groove is greater than the outer diameter of the rod 401, so that the flange 9 can move within a certain distance relative to the rod 401 of the pin 4, and under the action of the spring 5, the flange 9 can be prevented from moving relative to the rod 401 of the pin 4 without external force.

[0044] It should be further noted that the diameter of the pin 4 is about 4 mm, and the height of the spring 5 is about 8 mm.

[0045] In some embodiments, the buckle 6 and the pin 4 are detachably fixedly connected, the buckle 6 and the pin 4 are arranged in detachable fixed connection, the installation and dismounting of the pin 4 are facilitated, and the specific arrangement modes have the following three embodiments:

[0046] Embodiment 1, please refer to Figures 1-6 ;

[0047] The buckle 6 comprises a buckle block 601 and a buckle strip 603, the buckle block 601 is provided with a through hole 604 for the rod 401 to pass through, the buckle block 601 is provided with a containing cavity 602, the buckle strip 603 is arranged in the containing cavity 602, the containing cavity 602 at least partially intersects with the through hole 604 in space, so that the buckle strip 603 can at least partially extend into the through hole 604, the rod 401 is provided with an embedding groove 10, and the buckle strip 603 is at least partially embedded in the embedding groove 10. By arranging the buckle block 601 and the buckle strip 603, the buckle block 601 is provided with the through hole 604 at the center, so that the rod 401 can pass through the buckle block 601, meanwhile, the containing cavity 602 intersecting with the through hole 604 in space is arranged in the buckle block 601, the buckle strip 603 is arranged in the containing cavity 602, the buckle strip 603 has a certain elasticity, the embedding groove 10 matched with the buckle strip 603 is arranged on the rod 401, when the rod 401 is inserted into the through hole 604, the rod 401 extrudes the buckle strip 603 to move into the containing cavity 602 when the embedding groove 10 does not move to the buckle strip 603, the buckle strip 603 is deformed, the buckle strip 603 always has a tendency to move close to the rod 401, when the embedding groove 10 moves to the buckle strip 603, the buckle strip 603 returns to the initial position, and the buckle strip 603 is at least partially embedded in the embedding groove 10, so that the connection and fixation between the pin 4 and the buckle 6 are completed.

[0048] It should be noted that the buckle strip 603 is a steel wire strip which is bent, and the buckle strip 603 is symmetrically arranged about the axis of the rod 401.

[0049] As shown in the drawings, Figures 1-4 In the embodiment, the embedding groove 10 is provided with two groups, the two groups of embedding grooves 10 form an isolation part, and the two groups of embedding grooves 10 are respectively arranged on opposite sides of the rod 401. When the rod 401 is inserted into the through hole 604, the buckle strip 603 is respectively embedded in the two groups of embedding grooves 10, the buckle strip 603 respectively fixes opposite sides of the rod 401, and the relative fixation between the rod 401 and the buckle 6 is realized.

[0050] As shown in the drawings, Figure 2 and Figure 6As shown in the embodiment, the accommodating cavity 602 extends to the outside of the buckle block 601, the buckle strip 603 is symmetrically bent to form an elastic rod, when the rod part 401 rotates, the isolation part extrudes the buckle strip 603, so that the buckle strip 603 deforms and moves to the outside of the buckle block 601, when it is needed to separate the rod part 401 from the buckle 6, the rod part 401 rotates by rotating the pin 4, the slot 10 moves to the buckle strip 603, the isolation part contacts the buckle strip 603, the isolation part extrudes the buckle strip 603, so that the buckle strip 603 deforms and moves to the outside of the buckle block 601, at least part of the buckle strip 603 moves to the outside of the buckle block 601 along the accommodating cavity 602, the buckle strip 603 can be pulled out, so that the separation between the rod part 401 and the buckle 6 is realized.

[0051] Embodiment 2, please refer to Figures 7-8 ;

[0052] The buckle 6 comprises a buckle ring 611, the rod part 401 passes through the buckle ring 611, the buckle ring 611 extends away from one side of the spring 5 to form at least two groups of elastic hooks 612, the elastic hooks 612 are inclined to the direction close to the rod part 401, the rod part 401 is provided with a clamping groove 11 matched with the elastic hooks 612, the elastic hooks 612 are at least partially embedded in the clamping groove 11, by arranging the buckle ring 611, at least two groups of elastic hooks 612 are arranged at the bottom end of the buckle ring 611, the elastic hooks 612 are inclined to the direction close to the rod part 401, and the clamping groove 11 matched with the elastic hooks 612 is arranged on the rod part 401, when the rod part 401 is inserted into the buckle ring, the rod part 401 extrudes the elastic hooks 612 to expand outward, when the clamping groove 11 moves to the position of the elastic hooks 612, the elastic hooks move to the direction close to the clamping groove 11, the elastic hooks 612 are at least partially embedded in the clamping groove 11, so that the fixation between the rod part 401 and the buckle 6 is realized, when it is needed to separate the buckle 6 from the rod part 401, the elastic hooks can be bent outward, so that the elastic hooks are separated from the clamping groove 11, and then the rod part 401 can be pulled out.

[0053] It should be noted that the elastic hooks 612 can be arranged in two groups, three groups, four groups or the like, which can be selected according to actual conditions, the clamping groove 11 is an inclined triangular groove, a limiting part is formed at the bottom end of the clamping groove 11, the limiting part contacts the elastic hooks 612, and the direct limiting of the elastic hooks and the rod part 401 is realized.

[0054] Embodiment 3, please refer to Figure 9 ;

[0055] The buckle 6 comprises a nut 621, and the rod portion 401 is formed with a threaded section 12 which is matched with the nut 621, and the buckle 6 is screwed with the rod portion 401, so that the connection between the rod portion 401 and the buckle 6 is realized by screwing, and the connection or disconnection operation is convenient.

[0056] In some embodiments, the buckle 6 is formed with a groove 605 on one side close to the spring 5, and a plurality of limiting blocks 606 are arranged in the groove 605 in a ring shape, and the spring 5 is at least partially embedded between the limiting blocks 606 and the inner wall of the groove 605. By opening the groove 605 on the top of the buckle 6, and arranging a plurality of limiting blocks 606 in the groove 605, when the spring 5 is installed between the buckle 6 and the flange 9, the bottom end of the spring 5 is embedded between the limiting blocks 606 and the inner wall of the groove 605, and the spring 5 is limited by the limiting blocks 606 and the inner wall of the groove 605, so that the movement of the spring 5 is prevented.

[0057] It should be noted that in the present embodiment, the limiting blocks 606 are provided in four groups, so that the spring 5 can be in contact with at least one group of limiting blocks 606 no matter how it is installed.

[0058] As shown in Figure 1 In some embodiments, the damper further comprises a damping block 13 which is arranged between the housing 1 and the flange 9, and the rod portion 401 penetrates through the damping block 13. By arranging the damping block 13 between the housing 1 and the flange 9, the direct contact between the flange 9 and the housing 1 is avoided, and when the gas generator 2 vibrates, the damping block 13 can play a damping role between the housing 1 and the flange 9, so that the housing 1 is not greatly affected.

[0059] It should be noted that the damping block 13 can be a damping pad (such as a rubber pad), and the rod portion 401 of the pin 4 penetrates through the central hole of the damping pad.

[0060] As shown in Figure 1 In some embodiments, the damping block is formed with a wavy end face on one side close to the housing and / or close to the flange. By setting the upper end face and / or the lower end face of the damping block as a wavy end face, the damping block can have a certain energy absorption effect when being pressed, so that the damping effect is further improved.

[0061] As shown in Figures 1-2As shown, in some embodiments, the damper further includes a rubber sleeve 7, which includes a first columnar portion 701 and a second columnar portion 702. The first columnar portion 701 at least partially covers the pan head portion 402 of the pin 4, and the second columnar portion 702 at least partially covers the rod portion 401. The first columnar portion 701 is at least partially in contact with the housing 1, and the second columnar portion 702 is at least partially in contact with the shock absorber and / or flange 9. By providing the rubber sleeve 7, the first columnar portion of the rubber sleeve 7... The pan head portion 402 of the pin 4 is covered by 701, which can prevent the pan head portion 402 of the pin 4 from directly contacting the housing 1. The first columnar portion 701 is in contact with the housing 1, which can play a role in sealing the gas. At the same time, the first columnar portion 701 has a certain elasticity, which can play a role in shock absorption. The second columnar portion 702 is in contact with the shock absorber and the flange 9, which can prevent the pin 4 from directly contacting the shock absorber and the flange 9. At the same time, when the gas generator 2 vibrates, the second columnar portion 702 can play a role in shock absorption.

[0062] It should be noted that the thickness of the rubber sleeve 7 is approximately 0.5mm, which, while ensuring the coverage of the pin 4, also provides a certain degree of shock absorption.

[0063] like Figures 1-2 As shown, in some embodiments, the first columnar portion 701 extends to form a plurality of elastic columns 703 at one edge near the second columnar portion 702. The plurality of elastic columns 703 are evenly distributed in a ring on the second columnar portion 702. The plurality of elastic columns 703 are in contact with the housing 1. By providing a plurality of elastic columns 703 on one side of the first columnar portion 701 near the housing 1, and by having the plurality of elastic columns 703 in contact with the housing 1, when the gas generator 2 drives the pin 4 to vibrate, the elastic columns 703 can play a buffering role, thereby adjusting the vibration frequency of the gas generator 2.

[0064] like Figures 1-2As shown, in some embodiments, the first columnar portion 701 extends to form a transition portion 704 at the center of the side near the second columnar portion 702. The transition portion 704 has several recessed portions 705 on its outer periphery, allowing it to deform as a whole. The transition portion 704 has several slots 706 on the side near the damping block. The damping block has inserts that mate with the slots 706 on the side near the transition portion 704. The first columnar portion 701 is located near the damping block... A transition portion 704 is formed on one side of the block. The transition portion 704 passes through the housing 1 and contacts the shock absorber block. Several recessed portions 705 are formed on the outer periphery of the transition portion 704. The several recessed portions 705 are evenly distributed so that the transition portion 704 can deform when it is squeezed. At the same time, several slots 706 are opened on the side of the transition portion 704 near the shock absorber block. The top of the shock absorber block is provided with plugs that cooperate with the several slots 706. The plugs are at least partially inserted into the slots 706 to ensure the connection effect between the transition portion 704 and the shock absorber block.

[0065] like Figure 1 As shown, in some embodiments, the airbag module further includes a sealing rubber 8, which is disposed between the gas generator 2 and the housing 1. The gas generator 2 and the sealing rubber 8 are interlocked. Since the gas generator 2 is suspended, there will be a certain gap between the gas generator 2 and the housing 1. By providing the sealing rubber 8 between the gas generator 2 and the housing 1, the sealing rubber 8 is in a state of compression and interference with the outer wall of the gas generator 2. When the gas generator 2 vibrates, the sealing rubber 8 can always be tightly attached to the outer wall of the gas generator 2 to avoid air leakage.

[0066] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments described later are relatively simple in description since they correspond to the system, and relevant parts can be referred to the descriptions in the system embodiments.

[0067] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A steering wheel airbag module, the airbag module comprising a housing and a gas generator, wherein the housing has a space formed therein for accommodating a folded airbag pouch, the gas generator is at least partially inserted into the airbag pouch, and a flange extends outward from the outer periphery of the gas generator, the flange being located outside the housing, characterized in that, The airbag module also includes several dampers. The damper includes a pin, a spring, and a snap fastener. The rod of the pin passes through the housing and the flange and engages with the snap fastener. The gas generator can move normally relative to the rod. The spring is sleeved on the rod, and the two ends of the spring abut against the snap fastener and the flange, respectively, so that the gas generator can move axially relative to the housing along the rod. The buckle and the pin are detachably fixedly connected, and the buckle is in a suspended state, so that the pin is not locked.

2. The steering wheel airbag module according to claim 1, characterized in that, The fastener includes a fastening block and a fastening strip. The fastening block has a through hole for the rod to pass through, and a receiving cavity is formed inside the fastening block. The fastening strip is placed inside the receiving cavity. The receiving cavity at least partially intersects the through hole in space, so that the fastening strip can at least partially extend into the through hole. The rod has a groove, and the fastening strip is at least partially embedded in the groove.

3. The steering wheel airbag module according to claim 2, characterized in that, The groove is provided in two sets, and an isolation part is formed between the two sets of grooves. The two sets of grooves are respectively distributed on opposite sides of the rod.

4. The steering wheel airbag module according to claim 3, characterized in that, The accommodating cavity extends to the outside of the latching block. The latching strip is formed by symmetrically bending an elastic rod. When the rod rotates, the insulating part squeezes the latching strip, causing the latching strip to deform and move outward from the latching block.

5. The steering wheel airbag module according to claim 1, characterized in that, The fastener includes a fastening ring, the rod passes through the fastening ring, the fastening ring extends away from the spring to form at least two sets of elastic hooks, the elastic hooks are inclined towards the rod, the rod has a groove that cooperates with the elastic hooks, and the elastic hooks are at least partially embedded in the groove.

6. The steering wheel airbag module according to claim 1, characterized in that, The fastener includes a nut, and the rod portion has at least a partially formed threaded section that mates with the nut. The fastener is screwed to the rod portion.

7. The steering wheel airbag module according to any one of claims 3-6, characterized in that, The buckle has a groove on the side near the spring, and a plurality of ring-shaped limiting blocks are provided in the groove. The spring is at least partially embedded between the limiting blocks and the inner wall of the groove.

8. The steering wheel airbag module according to any one of claims 1-6, characterized in that, The damper also includes a shock absorber block, which is placed between the housing and the flange, and the rod passes through the shock absorber block.

9. The steering wheel airbag module according to claim 8, characterized in that, The damping block has a wavy end face on the side near the housing and / or near the flange.

10. The steering wheel airbag module according to claim 8, characterized in that, The damper further includes a rubber sleeve, which includes a first columnar portion and a second columnar portion. The first columnar portion at least partially covers the pan head portion of the pin, and the second columnar portion at least partially covers the rod portion. The first columnar portion is at least partially in contact with the housing, and the second columnar portion is at least partially in contact with the shock absorber block and / or flange.

11. The steering wheel airbag module according to claim 10, characterized in that, A plurality of elastic columns extend from one edge of the first columnar portion near the second columnar portion, and the plurality of elastic columns are evenly distributed in a ring on the second columnar portion and the plurality of elastic columns are in contact with the shell.

12. The steering wheel airbag module according to claim 10 or 11, characterized in that, The first columnar portion extends to form a transition portion at the center of the side near the second columnar portion. Several recessed portions are formed on the outer periphery of the transition portion so that the transition portion can be deformed as a whole. Several slots are provided on the side of the transition portion near the shock absorber block. The side of the shock absorber block near the transition portion has plugs that cooperate with the several slots.

13. The steering wheel airbag module according to claim 1, characterized in that, The airbag module also includes a sealing rubber, which is disposed between the gas generator and the housing, and the gas generator and the sealing rubber are interference-fitted to each other.

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