CN212556148U - Positioning sleeve, positioning matching structure and automobile steering wheel assembly - Google Patents

Abstract

The utility model discloses a position sleeve has at least and carries out elasticity radial positioning's first interior elasticity location portion, to the blind rivet in the second elasticity location portion that the axial was spacing and supplementary elasticity radial positioning was carried out to the guide sleeve that sets up on the gasbag subassembly, carries out elasticity radial positioning's outer elasticity location portion to the blind rivet in the third elasticity location portion that carries out radial positioning and carry out elasticity radial positioning to the locating hole that sets up on the steering wheel body. Also discloses a positioning matching structure containing the positioning sleeve and an automobile steering wheel assembly containing the positioning matching structure. The utility model discloses a set up the position sleeve and carry out the elastic positioning cooperation between the locating hole of the guide sleeve of gasbag subassembly, blind rivet and steering wheel body, eliminate the clearance that exists between the locating hole of gasbag subassembly and steering wheel body, can fundamentally solve the vibration abnormal sound of gasbag subassembly and the problem that the jamming was pressed to the horn switch.

Description

Positioning sleeve, positioning matching structure and automobile steering wheel assembly

Technical Field

The utility model relates to a car steering wheel technical field especially relates to car steering wheel technical field with air bag, in particular to position sleeve, contain the location fit structure of this position sleeve and contain the car steering wheel subassembly of this location fit structure.

Background

An automobile steering wheel assembly with an airbag module generally comprises a steering wheel body and a driver airbag module, wherein the driver airbag module is installed in an installation cavity of the steering wheel body in different fixing modes. When the vehicle collides and the airbag explosion condition is met, the driver airbag module is ejected out of the mounting cavity of the steering wheel body in time, so that the purpose of protecting the driver is achieved.

However, there is an assembly gap between the post and the hole of the positioning structure in the existing automobile steering wheel assembly, even the positioning is insufficient, and in the driving process of the automobile, the situation that the driver airbag module moves in the steering wheel body often occurs, which easily causes the driver airbag module to generate abnormal sound, and causes certain influence on the driving experience of the user.

In order to solve the above technical problems, the following patents have been developed:

1. the airbag module mounted on the steering wheel disclosed in chinese patent application No. CN101391595A is positioned by inserting a pin provided on the airbag module into a clip provided on the steering wheel body.

2. In the steering wheel with an airbag device and the assembling method thereof, as disclosed in chinese patent application No. CN101676162A, the airbag module is also positioned by inserting pins provided on the airbag module into clips provided on the steering wheel body.

3. In the steering wheel with an airbag device disclosed in chinese patent application No. CN101676163A, the airbag module is also positioned by inserting pins provided on the airbag module into clips provided on the steering wheel body.

4. In the steering wheel device with an airbag disclosed in chinese patent application No. CN101817332A, a fixing pin of an airbag module is inserted into a through hole of a metal core of a steering wheel through a resin member to be positioned.

5. In the steering wheel with an airbag device, disclosed in chinese patent application No. CN102442269B, the fixing pins of the airbag module are inserted into the through holes of the metal core of the steering wheel through a resin member for positioning.

6. In the vibration damping structure for a steering wheel disclosed in chinese patent application No. CN103010148A, the fixing pins of the airbag module are positioned by inserting a resin member into the through holes of the metal core of the steering wheel.

7. For example, in the damping system for a steering wheel disclosed in chinese patent application No. CN103029741A, the fixing pins of the airbag module are inserted into the through holes of the metal core of the steering wheel through a resin member for positioning.

8. In the steering wheel device with an airbag disclosed in chinese patent application No. CN103085754A, a fixing pin of an airbag module is inserted into a through hole of a metal core of a steering wheel through a resin member to be positioned.

9. In the steering wheel with an airbag device, disclosed in chinese patent application No. CN103640543A, the fixing pins of the airbag module are inserted into the through holes of the metal core of the steering wheel through a resin member for positioning.

10. In the steering wheel with an airbag device, disclosed in chinese patent application No. CN103802880A, the fixing pins of the airbag module are inserted into the through holes of the metal core of the steering wheel through a resin member for positioning.

11. In the steering wheel with an airbag device, disclosed in chinese patent application No. CN105774735A, the fixing pins of the airbag module are inserted into the through holes of the metal core of the steering wheel through a resin member for positioning.

None of the above patents disclose that the positioning between the guide sleeve and the steering wheel in the air bag module can be achieved by a positioning sleeve that is manufactured separately as follows.

The applicant has therefore made an advantageous search and attempt to solve the above-mentioned problems, in the context of which the technical solutions to be described below have been created.

SUMMERY OF THE UTILITY MODEL

The utility model discloses one of the technical problem that will solve lies in: aiming at the defects of the prior art, the positioning sleeve which has accurate positioning and good stability and avoids abnormal sound is provided.

The second technical problem to be solved in the present invention is: a positioning matching structure comprising the positioning sleeve is provided.

The utility model discloses the third technical problem that will solve lies in: an automobile steering wheel assembly containing the positioning matching structure is provided.

As a first aspect of the present invention, the positioning sleeve has at least a first inner elastic positioning portion for performing elastic radial positioning on the guide sleeve provided on the airbag module, a second inner elastic positioning portion for performing axial spacing and auxiliary elastic radial positioning on the blind rivet, a third inner elastic positioning portion for performing radial positioning on the blind rivet, and an outer elastic positioning portion for performing elastic radial positioning on the positioning hole provided on the steering wheel body.

In a preferred embodiment of the present invention, the first inner elastic positioning portion, the second inner elastic positioning portion, the third inner elastic positioning portion, and the outer elastic positioning portion are coaxially disposed.

In a preferred embodiment of the present invention, the first inner elastic positioning portion is located above and outside the second inner elastic positioning portion.

In a preferred embodiment of the present invention, the first inner elastic positioning portion and/or the outer elastic positioning portion is an annular cantilever structure.

In a preferred embodiment of the present invention, at least two guiding ribs are formed on the outer circumferential surface of the guiding sleeve engaged with the first inner elastic positioning portion at intervals in the circumferential direction.

In a preferred embodiment of the present invention, the second internal elastic positioning portion is formed by at least two elastic pieces arranged in a circumferential manner, an internal boss having an internal arc surface is provided at the bottom of each elastic piece, and the internal boss having the internal arc surface and the first axial limiting portion of the rivet are positioned by elastic fitting.

In a preferred embodiment of the present invention, the lower end surface of the inner boss is a plane surface, which is engaged with the second axial limiting portion of the blind rivet.

In a preferred embodiment of the present invention, at least two outer protruding platforms are formed on the outer annular surface of the outer elastic positioning portion at intervals in the circumferential direction, a positioning outer arc surface is provided at a position where each outer protruding platform contacts with the positioning hole on the steering wheel body, and the positioning outer arc surface is positioned by elastic fitting with the hole surface of the positioning hole on the steering wheel body.

In a preferred embodiment of the present invention, the outer boss is of a cantilever structure.

In a preferred embodiment of the present invention, the positioning sleeve is integrally injection molded by engineering plastics.

As the positioning matching structure of the second aspect of the present invention, which includes the guide sleeve, the blind rivet, the positioning sleeve, and the positioning hole and the clamping steel wire, the blind rivet has a radial positioning portion, a neck portion, a first axial spacing portion and a second axial spacing portion; the radial positioning part and the neck part are coaxially arranged, the outer diameter of the neck part is smaller than that of the radial positioning part, the first axial limiting part and the second axial limiting part are arranged at the upper end and the lower end of the neck part respectively, and the radial positioning part and the third inner elastic positioning part in the positioning sleeve are positioned by elastic radial matching; the first axial limiting part and the second inner elastic positioning part in the positioning sleeve are matched in an elastic axial positioning mode and an auxiliary elastic radial positioning mode, the second axial limiting part is matched with the clamping steel wire in an axial positioning mode, and the clamping steel wire is fixed in the steering wheel body.

In a preferred embodiment of the present invention, the first axial limiting portion is a flat end surface or a tapered surface, and the second axial limiting portion is a flat end surface.

As a third aspect of the present invention, an automobile steering wheel assembly including the detent fitting structure includes:

a steering wheel body; and

an airbag module installed in an airbag module installation chamber of the steering wheel body;

the air bag assembly and the steering wheel body are in elastic positioning fit through the positioning fit structure.

Due to the adoption of the technical scheme, the beneficial effects of the utility model reside in that: the utility model discloses a set up the position sleeve and carry out the elastic positioning cooperation between the locating hole of the guide sleeve of gasbag subassembly, blind rivet and steering wheel body, eliminate the clearance that exists between the guide sleeve of gasbag subassembly and the locating hole of steering wheel body, can solve the problem that the jamming was pressed to gasbag subassembly's vibration abnormal sound and loudspeaker switch fundamentally. The utility model discloses an overall structure is comparatively compact, and work is more stable, has improved the practicality of steering wheel effectively.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the steering wheel body of the present invention.

Fig. 2 is a schematic structural view of the airbag module of the present invention.

Fig. 3 is a schematic structural view of an airbag support of the airbag module according to the present invention.

Fig. 4 is a sectional view a-a of fig. 1.

Fig. 5 is a sectional view B-B of fig. 1.

Fig. 6 is a schematic structural diagram of the positioning and fitting structure of the present invention.

Fig. 7 is an exploded schematic view of the positioning sleeve and the blind rivet in the positioning and fitting structure of the present invention.

Fig. 8 is a schematic structural diagram of a positioning sleeve in the positioning and fitting structure of the present invention.

Fig. 9 is a partial cross-sectional view of the detent engagement structure of the present invention.

Fig. 10 is a schematic view of another embodiment of a blind rivet in a detent fitting arrangement according to the present invention.

Fig. 11 is a schematic structural diagram of the horn switch of the present invention in an overload state.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

The utility model discloses an automobile steering wheel assembly, including steering wheel body 100 and air bag subassembly 200.

Referring to fig. 1, a steering wheel body 100 has an airbag module mounting cavity 101, and three positioning holes 110 are formed at intervals in the circumferential direction on the bottom surface of the airbag module mounting cavity 101 of the steering wheel body 100. Of course, the number of the positioning holes 110 is not limited to the number in the present embodiment, and it should be determined according to the positioning requirement and design.

Referring to fig. 2 and 3, the airbag module 200 is installed in the airbag module installation cavity 101 of the steering wheel body 100. The airbag module 200 includes an airbag bracket 210, an airbag clip 220, a gas generator 230, an airbag 240, a cover 250, and a horn actuation assembly.

The airbag bracket 210 is installed in the airbag module installation cavity 101 of the steering wheel body 100, the airbag clamping plate 220 is fixedly arranged in the airbag bracket 210, the gas generator 230 is installed on the airbag clamping plate 220, the gas bag 240 is arranged on the airbag clamping plate 220 in a folding manner, is positioned above the gas generator 230 and is connected with the gas generator 230, and the cover 250 covers the airbag bracket 210 and covers the gas bag 240. In order to ensure the assembling stability between the cover 250 and the airbag bracket 210 and prevent the cover 250 from flying out when the detonation occurs, seven hooks 211 are circumferentially spaced on the outer circumferential surface of the airbag bracket 210, and seven buckles 251 are circumferentially spaced at the circumferential edge of the cover 250 in one-to-one correspondence with the seven hooks 211. When the cover 250 is mounted on the airbag bracket 210, seven snaps 251 at the periphery of the cover 250 are correspondingly snapped into seven hooks 211 on the outer peripheral surface of the airbag bracket 210. Of course, the hooks 211 and the buckles 251 are not limited to the number in the present embodiment, and they should be designed according to actual needs.

Referring to fig. 4 and 5 in combination with fig. 2, three guide sleeves 260 are formed on the bottom surface of the airbag support 210, and the three guide sleeves 260 correspond to the three positioning holes 110 of the steering wheel body 100 one by one. Each guide sleeve 260 is internally provided with a pull nail 410, a flange part 415 of each pull nail 410 is hung on the upper end flange surface of the guide sleeve 260, and after the pull nail 410 correspondingly passes through the positioning hole 110, a second axial limiting part 414 is hung on the clamping steel wire 320, so that the air bag assembly 200 is prevented from being separated from the steering wheel assembly 100 when being ignited.

The horn conducting assembly includes a contact wire 310, a clamping wire 320, and three horn springs 330. The contact steel wire 310 is installed on the inner bottom surface of the airbag support 210 through a plurality of fasteners (not shown in the figure) arranged at intervals, the fastener steel wire 320 is arranged on the bottom surface of the airbag module installation cavity 101 of the steering wheel body 100 and is respectively contacted with the neck part 412 and the second axial limiting part 414 of the three pull nails 410, the three horn springs 330 are respectively in one-to-one correspondence with the three guide sleeves 260, each horn spring 330 is correspondingly sleeved on the outer cylinder surface of the guide sleeve 260, the upper end of each horn spring is abutted against the bottom surface of the airbag support 210 of the airbag module 200, and the lower end of each horn spring is abutted against the middle flange surface of the positioning sleeve 420. When the airbag module 200 is pressed, the three horn springs 330 on the outer cylindrical surfaces of the three guide sleeves 260 are compressed downward, and simultaneously, the contact steel wires 310 on the airbag support 210 are driven to move downward, while the three pull nails 410 remain stationary, and the contact steel wires 310 touch the upper end surfaces of the pull nails 410 in the downward movement process, so that the contact steel wires 310 are electrically conducted through the pull nails 410, and thus, a horn is sounded.

Referring to fig. 11, when the air bag module 200 is pressed downward continuously after the horn is turned on, the first axial position-limiting portion 413 of the pull stud 410 drives the second inner elastic positioning portion 422 of the positioning sleeve 420 to open, thereby allowing the contact wire 310 to drive the pull stud 410 to move downward continuously until the guide sleeve 260 contacts the hard position-limiting portion 425 of the positioning sleeve 420.

Referring to fig. 4 to 10, the airbag module 200 of the present invention is elastically positioned and engaged with the steering wheel body 100 by a positioning and engaging structure 400. Specifically, the positioning and fitting structure includes the above-mentioned guiding sleeve 260, the pull stud 410, the positioning sleeve 420 and the above-mentioned clamping steel wire 320. The pull stud 410 is disposed within the guide sleeve 260 with clearance and the locating sleeve 420 is mounted outside the guide sleeve 260.

The pull stud 410 has a radial positioning portion 411, a neck portion 412, a first axial limiting portion 413, a second axial limiting portion 414, a flange portion 415 and a guide portion 416, wherein the outer diameter of the neck portion 412 is smaller than the outer diameters of the radial positioning portion 411 and the guide portion 416, and the first axial limiting portion 413 and the second axial limiting portion 414 are disposed at the upper end and the lower end of the neck portion 412. In the present embodiment, the first axial limiting portion 413 is a tapered surface or a flat surface, and the second axial limiting portion 414 is a flat surface.

The positioning sleeve 420 has a first inner elastic positioning portion 421, a second inner elastic positioning portion 422, an outer elastic positioning portion 423, and a third inner elastic positioning portion 424. The first inner elastic positioning portion 421 performs elastic radial positioning on the guide sleeve 260 arranged on the air bag assembly 200, the second inner elastic positioning portion 422 performs auxiliary elastic radial positioning on the rivet 410 arranged on the air bag assembly 200, meanwhile, the second inner elastic positioning portion 422 also performs axial (upward lifting) elastic positioning on the rivet 410, the outer elastic positioning portion 423 performs elastic radial positioning on the positioning hole 110 arranged on the steering wheel body 100, and the third inner elastic positioning portion 424 performs elastic radial positioning on the radial positioning portion 411 of the rivet 410. The first inner elastic positioning portion 421, the second inner elastic positioning portion 422, the outer elastic positioning portion 423, and the third inner elastic positioning portion 424 are coaxially disposed.

First interior elastic locating portion 421 is annular cantilever structure, and is concrete, is equipped with direction protruding muscle 260a on guide sleeve 260, cooperates with guiding surface 421a on first interior elastic locating portion 421, and line face cooperation location is more accurate, and is also more nimble during the motion, and certainly direction protruding muscle 260a is not necessary, can cancel direction protruding muscle 260a for further simplified structure, adopts guiding surface 421a directly to carry out the cooperation of elasticity radial location with guide sleeve 260.

The second inner elastic positioning portion 422 is composed of three elastic pieces 422a arranged in a circumferential manner, although the number of the elastic pieces 422a is not limited in this embodiment, and at least two elastic pieces 422a may be provided according to the positioning requirement. An inner boss 422a 'is arranged at the contact part of each elastic piece 422a and the rivet 410, and the inner boss 422 a' is positioned with the first axial limiting part 413 of the rivet 410 by adopting elastic radial fit to limit the downward movement of the rivet 410 before contacting with the contact steel wire 310, wherein the elastic fit can be one of clearance fit, 0 clearance elastic fit or interference elastic fit. The rivet 410 is axially and elastically installed in the positioning sleeve 420, and since the second inner elastic positioning portion 422 has good elasticity, after the upper end surface of the rivet 410 is contacted with the contact steel wire 310, the second inner elastic positioning portion 422 is opened under the driving of the pressing force to continue moving downwards until the guide sleeve 260 is contacted with the hard limiting portion 425 of the positioning sleeve 420, as shown in fig. 11, so that the reliable elastic contact between the contact steel wire 310 and the rivet 410 is ensured, the collision noise when the contact steel wire 310 is contacted with the upper end surface of the rivet 410 is reduced, and the horn conduction assembly is prevented from being damaged due to the strong operation.

The bottom end surface 422b of the elastic piece 422a is matched with the second axial limiting part 414 at the lower part of the rivet 410, so that the positioning sleeve 420 is prevented from falling off before the air bag assembly 200 is installed on the steering wheel body 100. When the airbag module 200 is mounted on the steering wheel body 100, the bottom end surface 422b of the resilient piece 422a is separated from the second axial limiting portion 414, and thus the anti-slip function is not performed.

The third inner elastic positioning portion 424 is an inner arc structure, and three guiding ribs 424a are formed on the inner arc surface at intervals in the circumferential direction, however, the number of the guiding ribs 424a is not limited in this embodiment. The guide ribs 424a are respectively radially and elastically engaged with the radial positioning portions 411 of the blind rivet 410, so as to prevent the blind rivet 410 from generating abnormal noise when shaking inside the guide sleeve 260, wherein the elastic engagement may be one of a clearance fit, a 0-clearance elastic fit or an interference elastic fit. Of course, the guiding rib 424a is not necessary, and in order to further simplify the structure, the guiding rib 424a may be eliminated, and the inner arc surface of the third inner elastic positioning portion 424 is directly matched with the radial positioning portion 411 of the rivet 410 in a radial positioning manner.

In addition, axially extending notches 261 are circumferentially and alternately arranged on the guide sleeve 260, so that the tail end of the guide sleeve matched with the first inner elastic positioning portion has better elasticity, the number of the notches 261 corresponds to that of the third inner elastic positioning portions 424 one by one, when the positioning sleeve 420 is installed, the third inner elastic positioning portions 424 are respectively positioned in the three notches 261 formed in the guide sleeve 260, the third inner elastic positioning portions 424 are in clearance fit with the side surfaces of the notches 261, and the positioning sleeve 420 is prevented from rotating around the guide sleeve 260 after being installed.

The outer elastic positioning portion 423 is in an annular structure, and three outer bosses 423a are formed on an outer annular surface of the outer elastic positioning portion at intervals in the circumferential direction, although the number of the outer bosses 423a is not limited in this embodiment, and at least two outer bosses may be provided according to the positioning requirement. A positioning outer arc surface 423a 'is arranged at a contact part of each outer boss 423a and the positioning hole 110 on the steering wheel body 100, and the positioning outer arc surface 423 a' and a hole surface of the positioning hole 110 on the steering wheel body 100 are positioned by elastic fit, wherein the elastic fit can be one of clearance elastic fit, 0 clearance elastic fit or interference elastic fit, so as to ensure the positioning function of the positioning sleeve 420 in the positioning hole 110. In the present embodiment, the outer boss 423a is preferably cantilevered.

The first inner elastic positioning portion 421, the second inner elastic positioning portion 422, the outer elastic positioning portion 423 and the third inner elastic positioning portion 424 of the positioning sleeve 420 are formed by injection molding in an integral molding manner. In this embodiment, the positioning sleeve 420 is preferably injection molded from an engineering plastic material.

When the airbag module 200 is installed in the steering wheel body 100, the second axial limiting portion 414 of the rivet 410 is in axial positioning fit with the clamping steel wire 320, and the clamping steel wire 320 is fixed in the steering wheel body 100. To further reduce the contact noise of the rivet 410, a flexible damping sleeve 417 may be wrapped around the flange portion 415 of the upper portion of the rivet 410.

In order to prevent the contact wire 310 from being damaged or falling off when the horn switch is strongly operated, the airbag clamping plate 220 is provided with a boss 221 which presses the contact wire 310.

The utility model discloses a concrete installation of car steering wheel subassembly as follows:

firstly, respectively installing the horn spring 330 on the positioning sleeve 420 to form a 1 st-1 st combined body, then respectively installing the 1 st-1 st combined body on the guide sleeve 260, respectively penetrating the blind rivet 410 from the inside of the airbag bracket 210 through a hole in the guide sleeve 260 and a hole in the positioning sleeve 420, and finally clamping the second axial limiting part 414 by the flat end surface of the second inner elastic positioning part 422 to form the 1 st combined body;

secondly, firstly, the contact spring pieces 340 are installed in the installation grooves (not shown) in the air bag bracket 210, then the contact steel wires 310 are pressed into the installation grooves (not shown) arranged in the air bag bracket 210, and the contact steel wires are assembled together by the buckles (not shown) arranged near the installation grooves to form a 2 nd combined body;

thirdly, mounting the gas generator 230 on the airbag clamping plate 220 to form a 3 rd-1 combined body, then placing the 3 rd-1 combined body into the gas bag 240 and exposing the bottom of the gas generator 230 and a bolt column (not labeled in the figure) of the airbag clamping plate 220 to form a 3 rd-2 combined body, then placing the 3 rd-2 combined body into the 2 nd combined body for folding and forming, and finally fixing the combined body and the 2 nd combined body together by a nut 270 to form the 3 rd combined body;

fourth, the 3 rd combined body is pressed into the cover 250, and the hook 211 and the catch 251 are assembled together to form the air bag module 200;

fifthly, the airbag module 200 is mounted on the steering wheel body 100, the positioning sleeve 420 is inserted into the positioning hole 110 in the steering wheel body 100, and the second axial limiting portion 414 of the blind rivet 410 is clamped by the clamping steel wire 320.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (14)

1. A locating sleeve is characterized by at least comprising a first inner elastic locating portion, a second inner elastic locating portion, a third inner elastic locating portion and an outer elastic locating portion, wherein the first inner elastic locating portion is used for conducting elastic radial locating on a guide sleeve arranged on an air bag assembly, the second inner elastic locating portion is used for conducting axial limiting and assisting elastic radial locating on a rivet, the third inner elastic locating portion is used for conducting radial locating on the rivet, and the outer elastic locating portion is used for conducting elastic radial locating on a locating hole arranged on a steering wheel body.

2. The locating sleeve of claim 1, wherein the first inner resilient locating portion, the second inner resilient locating portion, the third inner resilient locating portion and the outer resilient locating portion are coaxially disposed.

3. The locating sleeve of claim 2, wherein the first inner elastic locating portion is located above and outside the second inner elastic locating portion.

4. The locating sleeve of claim 1, wherein the first inner resilient locating portion and/or the outer resilient locating portion is of annular configuration.

5. The locating sleeve according to claim 1, wherein the first inner elastic locating portion is in elastic radial locating engagement with the guide sleeve or a guide rib provided on the guide sleeve.

6. The locating sleeve according to claim 1, characterized in that the third inner elastic locating portion or a guide rib provided on the third inner elastic locating portion is elastically and radially located-fitted with the radial locating portion of the blind rivet.

7. The locating sleeve as claimed in claim 1, wherein the second inner elastic locating portion is formed by at least two elastic pieces which are arranged in a circumferential shape, an inner boss with an inner arc surface is arranged at the bottom of each elastic piece, and the inner boss is elastically and axially located and matched with the first axial limiting portion of the rivet.

8. The locating sleeve of claim 7, wherein a bottom end surface of the inner boss engages the second axial stop portion of the pull stud.

9. The positioning sleeve as claimed in claim 1, wherein at least two outer protrusions are formed on the outer circumferential surface of the outer elastic positioning portion at intervals in the circumferential direction, a positioning outer arc surface is provided at a portion of each outer protrusion contacting with the positioning hole of the steering wheel body, and the positioning outer arc surface is elastically fitted with the positioning hole of the steering wheel body for positioning.

10. The alignment sleeve of claim 1 wherein the first inner and outer resilient positioning portions are cantilevered.

11. The locating sleeve of claim 1, wherein the locating sleeve is integrally injection molded from an engineering plastic material.

12. A positioning matching structure is characterized by comprising a guide sleeve, a pull nail and a positioning sleeve which are arranged in an air bag assembly, and a positioning hole and a clamping steel wire which are arranged in a steering wheel body, wherein the positioning sleeve is the positioning sleeve according to any one of claims 1 to 11, and the pull nail is provided with a radial positioning part, a neck part, a first axial limiting part and a second axial limiting part; the radial positioning part and the neck part are coaxially arranged, the outer diameter of the neck part is smaller than that of the radial positioning part, the first axial limiting part and the second axial limiting part are arranged at the upper end and the lower end of the neck part respectively, and the radial positioning part and the third inner elastic positioning part in the positioning sleeve are positioned by elastic radial matching; the first axial limiting part and the second inner elastic positioning part in the positioning sleeve are matched in an elastic axial positioning mode and an auxiliary elastic radial positioning mode, the second axial limiting part is matched with the clamping steel wire in an axial positioning mode, and the clamping steel wire is fixed in the steering wheel body.

13. The detent engagement structure according to claim 12, wherein said first axial restraint portion is a flat end surface or a tapered surface, and said second axial restraint portion is a flat end surface.

14. An automotive steering wheel assembly comprising:

a steering wheel body; and

an airbag module installed in an airbag module installation chamber of the steering wheel body; it is characterized in that the preparation method is characterized in that,

the airbag module and the steering wheel body are elastically positioned and matched through the positioning and matching structure of any one of claims 12 or 13.

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