Damping structure suitable for pin for steering wheel and automobile steering wheel

Abstract

The embodiment of the invention provides a damping structure suitable for a pin for a steering wheel and an automobile steering wheel, the damping structure is installed and fixed on a supporting piece of any one of the steering wheel or a safety air bag module and used for attenuating vibration transmission between the pin and surrounding parts, and a sleeve is fixed at a through hole in the supporting piece. The elastic piece is fixed on the supporting piece and provided with a supporting leg which always moves from the position outside the axial projection area of the through hole to the position inside the axial projection area of the through hole under the elastic bias action of the supporting leg, the tail end of the pin is provided with a clamping groove, the supporting leg is elastically embedded into the clamping groove, and the pin is provided with a step part. A damping piece is arranged between the step part and the upper end face of the sleeve and abuts against the step part and the upper end face of the sleeve in an interference mode. The elastic piece and the damping piece are arranged, the supporting leg of the elastic piece is embedded into the clamping groove in the tail end of the pin, the damping piece abuts against the position, close to the upper end face of the sleeve, of the pin in an interference mode, the pin is fixed, and the stability of the pin after installation is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile steering wheels, and in particular to a damping structure suitable for a steering wheel pin and an automobile steering wheel. Background Art

[0002] In the production of automobile steering wheels, it is necessary to install a damping device in the steering wheel, but there is generally a certain gap between the pin and the sleeve of the damping device, and abnormal noise is easily generated when the pin vibrates. Application No. 201980041080.6 discloses an installation and fixing structure of a damper unit in a steering wheel and a steering wheel, which can suppress the movement and vibration of the installation pin component between the steering wheel and the airbag module, and install and fix it to the support part to prevent abnormal noise. However, this application adopts a method of reducing noise by providing a support part at the bottom of the pin. In this way, when the force applied to the pin is larger, a certain abnormal noise will still be generated. Summary of the invention

[0003] In view of this, the embodiments of the present specification provide a damping structure suitable for a steering wheel pin and a car steering wheel. By arranging an elastic part and a damping part, the legs of the elastic part are embedded in the retaining grooves at the ends of the pins, and the damping part and the pins are in interference fit at positions near the upper end surfaces of the sleeves, thereby fixing the pins and ensuring the stability of the pins after installation. The pins hardly move in three-dimensional space, thereby avoiding abnormal noises caused by the vibrations of the pins.

[0004] The embodiment of this specification provides the following technical solution: a damping structure suitable for a steering wheel pin, mounted and fixed to a support member of either the steering wheel or the airbag module, for attenuating vibration transmission between the pin and surrounding parts, comprising:

[0005] The sleeve has a hollow cylindrical shape for inserting the pin and is fixed at the through hole on the support member.

[0006] The elastic member is fixed on the support member and has a leg that is always moved from a position outside the axial projection area of ​​the through hole to a position inside the axial projection area of ​​the through hole under its own elastic bias.

[0007] The end of the pin has a retaining groove, and the pin passes through the sleeve component. When in the final installation position, the leg is elastically embedded in the retaining groove.

[0008] A step portion is provided on the pin near the upper end surface of the sleeve, a damping member is provided between the step portion and the upper end surface of the sleeve, and the damping member is respectively in interference contact with the step portion and the upper end surface of the sleeve.

[0009] Preferably, the pin is provided with an annular groove, the damping member is coated with plastic material in the annular groove, and a step portion is formed on the outer periphery of the damping member.

[0010] Preferably, the damping member comprises an elastic material portion located on the upper end surface of the sleeve.

[0011] Preferably, the elastic material portion and the sleeve are separately arranged, and the upper end surface of the sleeve is provided with a plurality of radial grooves and an expansion portion formed between the plurality of grooves. When the sleeve is mounted on the support member, the lower end surface of the expansion portion is engaged with the upper surface of the peripheral edge of the through hole of the support member. The elastic material portion has an opening for inserting the pin rod portion, and includes an action portion and an embedding portion arranged up and down along the insertion direction of the pin. The embedding portion includes a plurality of radial blocks and annular vertical arms connecting the radial inner sides of the plurality of blocks. When the elastic material portion is embedded in the sleeve, the blocks are correspondingly embedded in the grooves, and the annular vertical arms are fitted on the radial inner side of the expansion portion.

[0012] Preferably, the action portion is used to abut against the plastic material, and its upper end surface is also provided with a radial deformation groove. When the pin is subjected to pressing force, the elastic material of the action portion can be deformed in the circumferential direction and further enter the deformation groove.

[0013] Preferably, the sleeve and the elastic material portion are integrally formed by a two-color injection molding process.

[0014] Preferably, the upper end surface of the sleeve extends in a horizontal direction to form an expansion portion, and a plurality of through grooves are formed on the expansion portion, and the plurality of through grooves evenly divide the upper end surface of the sleeve into a plurality of buffer blocks.

[0015] Preferably, a plurality of supporting ribs are provided between the expansion portion and the outer wall of the sleeve, and a plurality of limiting ribs are provided on the inner wall of the sleeve.

[0016] Preferably, a positioning groove corresponding to the supporting leg is formed on the sleeve, and the supporting leg can be embedded in the positioning groove.

[0017] A car steering wheel comprises a first movable contact, a first fixed contact, a cover plate, a shell, an airbag, an airbag bracket and a damping structure as described in any one of the above items, wherein the airbag bracket is placed in the airbag and the edge of the airbag opening is fixed to the airbag bracket, the airbag bracket and the airbag in a folded state are placed in a accommodating cavity formed by the cover plate and the shell, the first fixed contact is arranged on the top of a pin, the first movable contact is fixed to the lower surface of the airbag bracket, the airbag has a through hole, the first movable contact passes through the through hole and is opposite to the first fixed contact, the cover plate is pressed, and the first movable contact moves downward together with the shell and the airbag bracket, so that the first movable contact contacts the first fixed contact portion and is in a conducting state, thereby triggering a horn device.

[0018] Preferably, the airbag bracket has a central through hole for embedding the gas generator and a plurality of studs located around the central through hole. The plurality of studs respectively and successively pass through the through holes around the airbag opening, the through holes of the shell and the through holes on the flange of the gas generator and extend outward, and are fixed by nuts.

[0019] Preferably, the movable contact is arranged on a boss of the airbag bracket, the boss extends further toward the fixed contact than the plane where the root of the stud is located, and a protrusion is provided on the shell for accommodating the boss and the head of the pin.

[0020] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects:

[0021] By arranging an elastic part and a damping part, the leg of the elastic part is embedded in the retaining groove at the end of the pin, and the damping part and the pin are in interference fit at a position close to the upper end surface of the sleeve, thereby fixing the pin and ensuring the stability of the pin after installation. The pin hardly moves in three-dimensional space, and abnormal noise caused by pin vibration can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a damping structure suitable for a steering wheel pin provided in the present application;

[0024] Figure 2It is a structural schematic diagram of the elastic material part and the sleeve of the damping structure suitable for the steering wheel pin provided by the present application when they are arranged separately;

[0025] Figure 3 It is a structural schematic diagram of the automobile steering wheel provided by the present application;

[0026] Figure 4 It is a schematic diagram of the unassembled structure of the airbag and airbag bracket of the automobile steering wheel provided by the present application;

[0027] Figure 5 It is a schematic diagram of the structure of the airbag and the airbag bracket of the automobile steering wheel provided by the present application after being assembled;

[0028] Figure 6 It is a schematic diagram of the exploded structure of the automobile steering wheel provided by the present application.

[0029] In the figure, 1, pin; 2, support member; 3, sleeve; 4, support leg; 5, retaining groove; 6, annular embedding groove; 7, damping member; 8, step portion; 9, elastic material portion; 10, positioning groove; 11, embedding portion; 111, clamping block; 112, annular vertical arm; 12, clamping groove; 13, expansion portion; 14, clamping cavity; 15, deformation groove; 16, supporting rib; 17, opening; 18, action portion; 19, airbag; 20, cover plate; 21, airbag bracket; 22, first movable contact; 23, first fixed contact; 24, protrusion; 25, shell; 26, stud; 27, boss; 28, through hole; 29, steering wheel frame. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0032] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0033] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0034] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0035] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0036] like Figure 1 As shown, a damping structure suitable for a steering wheel pin is mounted and fixed to a support member 2 of either the steering wheel or the airbag module, and is used to attenuate the vibration transmission between the pin 1 and surrounding parts, including:

[0037] The sleeve 3 has a hollow cylindrical shape for inserting the pin 1 and is fixed to the through hole on the support member 2.

[0038] The elastic member is fixed on the support member 2 and has a leg 4 which is always moved from a position outside the axial projection area of ​​the through hole to a position inside the axial projection area of ​​the through hole under its own elastic bias.

[0039] The end of the pin 1 has a retaining groove 5, and the pin 1 passes through the sleeve 3. When in the final installation position, the leg 4 is elastically embedded in the retaining groove 5.

[0040] A step portion 8 is provided on the pin 1 near the upper end surface of the sleeve 3 , a damping member 7 is provided between the step portion 8 and the upper end surface of the sleeve 3 , and the damping member 7 is respectively in interference fit with the step portion 8 and the upper end surface of the sleeve 3 .

[0041] The pin 1 is inserted into the sleeve 3, and the leg 4 of the elastic member moves toward the direction close to the pin 1 under the action of its own elastic bias. The leg 4 elastically embeds into the retaining groove 5 at the end of the pin 1 to fix the pin 1. The damping member 7 is in interference fit with the position of the pin 1 near the upper end surface of the sleeve 3 to further fix the pin 1 and ensure the stability of the pin 1 after installation. The pin 1 hardly moves in the three directions of XYZ, which can avoid abnormal noise caused by the vibration of the pin 1.

[0042] It should be noted that the two different parts of the pin 1 are fixed by using the legs 4 and damping member 7 of the elastic member. The interference fit of the damping member 7 makes the upper end surface of the sleeve 3 always push the step 8 of the pin 1 so that the pin 1 has a tendency to move upward. The legs 4 of the elastic member and the retaining groove 5 of the pin 1 act to offset the upward movement of the pin 1, which makes the legs 4 and the retaining groove 5 more closely in contact, and can effectively prevent the vibration and abnormal sound occurring here. The two-point fixing method, which is close to the bottom and middle of the pin 1 and maintains a certain distance, makes the pin 1 more stable than the fixing only at the end of the pin 1, and can avoid the pin 1 and the surrounding parts from vibrating and producing abnormal sound, especially the contact part between the pin 1 and the legs 4.

[0043] like Figure 1 As shown, in some embodiments, the pin 1 has an annular groove 6, the damping member 7 is overmolded by a plastic material in the annular groove 6, and a step portion 8 is formed on the outer periphery of the damping member 7. By opening an annular groove 6 on the pin 1, the annular groove 6 is located at the upper end surface of the sleeve 3, and a damping member 7 made of plastic material is arranged between the sleeve 3 and the annular groove 6. The plastic material is overmolded in the annular groove 6, and a step portion 8 is formed on the outer periphery of the plastic material. The step portion 8 is in interference fit with the upper end surface and the inner wall of the sleeve 3, thereby fixing the pin 1 and preventing the pin 1 from moving relative to the sleeve 3.

[0044] It should be noted that the annular groove 6 is provided to provide a stable support for the step portion 8 formed of plastic material, and its depth needs to be set comprehensively based on the strength of the pin 1 itself and the support effect, so as to ensure that the pin 1 is not easily broken by excessive external force while ensuring the support effect.

[0045] like Figure 1As shown, in some embodiments, the damping member 7 includes an elastic material portion 9 located on the upper end surface of the sleeve 3. By arranging the elastic material portion 9 on the upper end surface of the sleeve 3, the elastic material portion 9 can play a buffering role, further weaken the vibration of the pin 1, and avoid abnormal noise caused by the vibration of the pin 1. There is a large friction between the plastic material and the elastic material portion 9 on the pin 1, which can prevent the relative slippage between the surfaces of the two to ensure the damping effect of the interference abutment. Even if the pin 1 moves slightly downward relative to the support member 2 due to the pressing force, it can be ensured that when the pressing force is removed, the pin 1 rebounds to the original installation position through the interference abutment force.

[0046] like Figure 2 As shown, in some embodiments, the elastic material portion 9 and the sleeve 3 are separately arranged, and the upper end surface of the sleeve 3 is provided with a plurality of radial grooves 12 and an expansion portion 13 formed between the plurality of grooves 12, and the expansion portion 13 extends radially outward compared to the cylindrical body of the sleeve 3. When the sleeve 3 is installed on the support member 2, the lower end surface of the expansion portion 13 is engaged with the upper surface of the periphery of the through hole of the support member 2. The elastic material portion 9 has an opening 17 for inserting the rod of the pin 1, and includes an action portion 18 and an embedding portion 11 arranged up and down along the insertion direction of the pin 1. The embedding portion 11 includes a plurality of radially shaped blocks 111 and an annular vertical arm 112 connecting the radial inner sides of the plurality of blocks 111. When the elastic material portion 9 is embedded in the sleeve 3, the blocks 111 are correspondingly embedded in the grooves 12, and the annular vertical arm 112 is attached to the radial inner side of the expansion portion 13. The action portion 18 is used to abut against the plastic material, and a radially shaped deformation groove 15 is also provided on its upper end surface. When the pin 1 is subjected to pressing force, the elastic material of the action portion 18 can be deformed circumferentially and further enter the deformation groove 15. By separately setting the elastic material part 9 and the sleeve 3, a slot 12 is provided on the upper end surface of the sleeve 3, and a block 111 matching the slot 12 is provided at the bottom end of the elastic material part 9. When the elastic material part 9 needs to be installed on the sleeve 3, the block 111 is embedded in the corresponding slot 12 to achieve the connection between the elastic material part 9 and the sleeve 3. Preferably, suitable elastic materials and / or deformation groove sizes can be selected according to different working conditions to improve the versatility of the split design.

[0047] It should be noted that a plurality of card cavities 14 are formed between the plurality of card blocks 111 of the embedded portion 11 and the annular vertical arms 112. The card cavities 14 are nested in the side and radial inner side of the expansion portion 13. The annular vertical arms 112 provide a rebound force to restrain the card blocks 111 and the action portion 18 from sliding excessively radially outward. As a whole arrangement, the durability of the elastic material portion 9 can be effectively improved.

[0048] like Figure 1As shown, in some other embodiments, the sleeve 3 and the elastic material portion 9 are integrally formed by a two-color injection molding process. The sleeve 3 and the elastic material portion 9 made of different materials are injection molded by adopting a two-color injection molding process to achieve integral molding of the sleeve 3 and the elastic material portion 9.

[0049] like Figure 1-Figure 2 As shown, in some embodiments, a plurality of support ribs 16 are arranged between the expansion portion 13 and the outer wall of the sleeve 3, and a plurality of limiting ribs are arranged on the inner wall of the sleeve 3. By arranging the support ribs 16 between the expansion portion 13 and the outer wall of the sleeve 3, the support ribs 16 can strengthen the space between the expansion portion 13 and the outer wall of the sleeve 3, and can cooperate with the inner wall structure of the through hole of the support member 2 to provide positioning and limiting effects; at the same time, a plurality of limiting ribs are arranged on the inner wall of the sleeve 3, and the limiting ribs can further limit the rod of the pin 1 to ensure the fixing effect of the pin 1.

[0050] It should be noted that when the sleeve 3 is mounted on the steering wheel frame, the expansion portion 13 is in contact with the steering wheel frame, and the expansion portion 13 can limit the sleeve 3 to ensure the stability of the sleeve 3.

[0051] like Figure 1-Figure 2 As shown, in some embodiments, a positioning groove 10 corresponding to the leg 4 is opened on the sleeve 3, and the leg 4 can be embedded in the positioning groove 10. By opening a positioning groove 10 corresponding to the leg 4 on the sleeve 3, when the pin 1 is installed, the leg 4 passes through the positioning groove 10 and is embedded in the locking groove 5 on the pin 1.

[0052] like Figure 1-Figure 6 As shown, based on the same inventive concept, the embodiment of this specification provides a car steering wheel, including a first movable contact 22, a first fixed contact 23, a cover plate 20, a shell 25, an airbag 19, an airbag bracket 21 and a damping structure as described in any of the above items, the damping mechanism is installed on the steering wheel frame 28, the airbag bracket 21 is placed in the airbag 19 and the opening edge of the airbag 19 is fixed on the airbag bracket 21, the airbag bracket 21 and the airbag 19 in a folded state are placed on the cover plate 20 and the shell 25 to form a Inside the accommodating cavity, the first fixed contact 23 is arranged on the top of the pin, the first movable contact 22 is fixed on the lower surface of the airbag bracket 21, and the airbag 19 has a through hole 28. The first movable contact 22 passes through the through hole 28 and is opposite to the first fixed contact 23. The cover plate 20 is pressed, and the first movable contact moves downward together with the housing 25 and the airbag bracket 21, so that the first movable contact 22 is in contact with the first fixed contact 23 and is in a conductive state, thereby triggering the horn device.

[0053] In this embodiment, the traditional horn plate component is omitted, and the fixed contact of the horn switch device is set on the top of the pin, the first movable contact 22 is set on the airbag bracket 21, and a through hole is opened on the airbag 19. The first movable contact passes through the through hole and corresponds to the first fixed contact 23 on the top of the pin. When the cover plate 20 is subjected to pressure, the cover plate 20 presses the housing and the airbag bracket 21 to move downward relative to the pin, and the first movable contact 22 moves with the airbag bracket 21. When the first movable contact 22 contacts the first fixed contact 23 on the top of the pin, the horn device is triggered to start working.

[0054] It should be noted that the first movable contact 22 is located above the first fixed contact 23, and the upper surface area of ​​the first fixed contact 23 can be set to be larger than the lower surface area of ​​the first movable contact 22, to ensure that the first movable contact 22 can contact the first fixed contact 23 when moving downward, thereby triggering the speaker device.

[0055] like Figure 4-Figure 5 As shown, in some embodiments, the airbag bracket 21 has a central through hole for embedding the gas generator and a plurality of studs 26 located around the central through hole. The plurality of studs 26 respectively pass through the through holes around the opening of the airbag 19, the through holes of the outer shell 25 and the through holes on the flange of the gas generator in sequence and extend outward, and are fixed by nuts. By opening a central through hole on the airbag bracket 21, the gas generator passes through the through hole and extends into the airbag 19, thereby ensuring the gas generator's gas supply to the airbag 19. At the same time, the airbag bracket 21, the airbag 19, the outer shell 25 and the flange of the gas generator are connected by the studs 26 to achieve the fixing operation of the gas generator.

[0056] like Figure 4-Figure 5 As shown, in some embodiments, the first movable contact 22 is arranged on the boss 27 of the airbag bracket 21, and the boss 27 extends further toward the first fixed contact 23 than the plane where the root of the stud 26 is located. The shell 25 is provided with a protrusion 24 for accommodating the boss 27 and the head of the pin 1. The airbag bracket 21 extends on one side close to the pin 1 to form the boss 27, and the shell 25 is provided with a protrusion 24 for accommodating the boss 27. The arrangement of the boss 27 and the protrusion 24 can not only provide more space for the folding of the airbag, but also when the airbag 19 is inflated and unfolded, the boss 27 will press the airbag 19 near the first movable contact 22 tightly into the protrusion 24, so as to prevent the airbag 19 from leaking at the first movable contact 22.

[0057] The same or similar parts of the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment described later, since it corresponds to the system, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A damping structure suitable for a steering wheel pin, mounted and fixed to a support member of either the steering wheel or the airbag module, for attenuating vibration transmission between the pin and surrounding parts, It is characterized in that include: The sleeve has a hollow cylindrical shape for inserting the pin and is fixed at the through hole on the support member. The elastic member is fixed on the support member and has a leg that is always moved from a position outside the axial projection area of ​​the through hole to a position inside the axial projection area of ​​the through hole under its own elastic bias. The end of the pin has a retaining groove, and the pin passes through the sleeve component. When in the final installation position, the leg is elastically embedded in the retaining groove. A step portion is provided on the pin near the upper end surface of the sleeve, a damping member is provided between the step portion and the upper end surface of the sleeve, and the damping member is respectively in interference contact with the step portion and the upper end surface of the sleeve.

2. The damping structure for a steering wheel pin according to claim 1, It is characterized in that The pin is provided with an annular embedding groove, the damping member is coated with plastic material in the annular embedding groove, and a step portion is formed on the outer periphery of the damping member.

3. The damping structure for a steering wheel pin according to claim 2, It is characterized in that The damping member includes an elastic material portion located on the upper end surface of the sleeve.

4. The damping structure for a steering wheel pin according to claim 3, It is characterized in that The elastic material portion and the sleeve are separately arranged, and the upper end surface of the sleeve is provided with a plurality of radial grooves and an expansion portion formed between the plurality of grooves. When the sleeve is installed on the support member, the lower end surface of the expansion portion is engaged with the upper surface of the peripheral edge of the through hole of the support member. The elastic material portion has an opening for inserting the pin rod portion, and includes an action portion and an embedding portion arranged up and down along the insertion direction of the pin. The embedding portion includes a plurality of radial blocks and annular vertical arms connecting the radial inner sides of the plurality of blocks. When the elastic material portion is embedded in the sleeve, the blocks are correspondingly embedded in the grooves, and the annular vertical arms are fitted on the radial inner side of the expansion portion.

5. The damping structure for a steering wheel pin according to claim 4, It is characterized in that The action portion is used to abut against the plastic material, and a radial deformation groove is further provided on its upper end surface. When the pin is subjected to pressing force, the elastic material of the action portion can be deformed in the circumferential direction and further enter the deformation groove.

6. The damping structure for a steering wheel pin according to claim 3, It is characterized in that The sleeve and the elastic material portion are integrally formed by a two-color injection molding process.

7. The damping structure for a steering wheel pin according to claim 1, It is characterized in that The sleeve is provided with a positioning groove corresponding to the supporting leg, and the supporting leg can be embedded in the positioning groove.

8. A car steering wheel, It is characterized in that It includes a first movable contact, a first fixed contact, a cover plate, a shell, an airbag, an airbag bracket and a damping structure as described in any one of claims 1 to 7, the airbag bracket is placed in the airbag and the edge of the airbag opening is fixed on the airbag bracket, the airbag bracket and the airbag in a folded state are placed in a accommodating cavity formed by the cover plate and the shell, the first fixed contact is arranged on the top of the pin, the first movable contact is fixed on the lower surface of the airbag bracket, the airbag has a through hole, the first movable contact passes through the through hole and is opposite to the first fixed contact, the cover plate is pressed, and the first movable contact moves downward together with the shell and the airbag bracket, so that the first movable contact contacts the first fixed contact part and is in a conductive state, thereby triggering the horn device.

9. The automobile steering wheel according to claim 8, It is characterized in that The airbag bracket has a central through hole for the gas generator to be embedded and a plurality of studs located around the central through hole. The plurality of studs respectively pass through the through holes around the airbag opening, the through holes of the shell and the through holes on the flange of the gas generator in sequence and extend outward, and are fixed by nuts.

10. The automobile steering wheel according to claim 9, It is characterized in that The movable contact is arranged on the boss of the airbag bracket, and the boss extends further toward the fixed contact than the plane where the root of the stud is located, and a protrusion is provided on the shell for accommodating the boss and the head of the pin.

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