A positioning sleeve, a positioning matching structure and a steering wheel assembly of a vehicle

Abstract

The positioning sleeve disclosed by the application has at least a first inner elastic positioning part for elastically positioning a guide sleeve arranged on an air bag assembly, a second inner elastic positioning part for axially limiting and assisting in elastically positioning a pull rod, a third inner elastic positioning part for radially positioning the pull rod, and an outer elastic positioning part for elastically positioning a positioning hole arranged on a steering wheel body. The application also discloses a positioning matching structure containing the positioning sleeve and an automobile steering wheel assembly containing the positioning matching structure. The application elastically positions and matches by arranging the positioning sleeve between the guide sleeve of the air bag assembly, the pull rod and the positioning hole of the steering wheel body, eliminates the gap between the air bag assembly and the positioning hole of the steering wheel body, and fundamentally solves the problems of vibration noise of the air bag assembly and press jamming of a horn switch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile steering wheel, in particular to the technical field of automobile steering wheel with airbag, and especially to a positioning sleeve, a positioning matching structure comprising the same and an automobile steering wheel assembly comprising the positioning matching structure. BACKGROUND

[0002] The automobile steering wheel assembly comprising airbag module is generally composed of a steering wheel body and a driver airbag module, and the driver airbag module is installed in the installation cavity of the steering wheel body by different fixing methods. When the vehicle collides and reaches the airbag point explosion condition, the driver airbag module will be timely ejected from the installation cavity of the steering wheel body, so as to achieve the purpose of protecting the driver.

[0003] However, there is an assembly gap between the column and the hole of the positioning structure in the existing automobile steering wheel assembly, and even the positioning is insufficient. During the driving of the vehicle, the driver airbag module often moves in the steering wheel body, which is easy to cause the driver airbag module to produce abnormal sound and affect the driving experience of the user.

[0004] In order to solve the above technical problems, the following patents have made improvements:

[0005] 1. The airbag assembly mounted on the steering wheel disclosed in Chinese patent application No. CN101391595A, the airbag assembly is positioned by inserting the pin provided on the airbag assembly into the clip provided on the steering wheel body.

[0006] 2. The steering wheel with airbag device and the assembly method thereof disclosed in Chinese patent application No. CN101676162A, the airbag assembly is also positioned by inserting the pin provided on the airbag assembly into the clip provided on the steering wheel body.

[0007] 3. The steering wheel with airbag device disclosed in Chinese patent application No. CN101676163A, the airbag assembly is also positioned by inserting the pin provided on the airbag assembly into the clip provided on the steering wheel body.

[0008] 4. The steering wheel device with airbag disclosed in Chinese patent application No. CN101817332A, the fixing pin on the airbag assembly is inserted into the through hole of the metal disc core of the steering wheel through a resin piece for positioning.

[0009] 5. The steering wheel with airbag device disclosed in Chinese patent application No. CN102442269B, the fixing pin on the airbag assembly is inserted into the through hole of the metal disc core of the steering wheel through a resin piece for positioning.

[0010] 6. The vibration damping structure for a steering wheel as disclosed in Chinese Patent Application No. CN103010148A, wherein the fixing pin of the air bag assembly is inserted into the through hole of the metal core of the steering wheel through a resin member.

[0011] 7. The damping system for a steering wheel as disclosed in Chinese Patent Application No. CN103029741A, wherein the fixing pin of the air bag assembly is inserted into the through hole of the metal core of the steering wheel through a resin member.

[0012] 8. The steering wheel device with an air bag as disclosed in Chinese Patent Application No. CN103085754A, wherein the fixing pin of the air bag assembly is inserted into the through hole of the metal core of the steering wheel through a resin member.

[0013] 9. The steering wheel with an air bag device as disclosed in Chinese Patent Application No. CN103640543A, wherein the fixing pin of the air bag assembly is inserted into the through hole of the metal core of the steering wheel through a resin member.

[0014] 10. The steering wheel with an air bag device as disclosed in Chinese Patent Application No. CN103802880A, wherein the fixing pin of the air bag assembly is inserted into the through hole of the metal core of the steering wheel through a resin member.

[0015] 11. The steering wheel with an air bag device as disclosed in Chinese Patent Application No. CN105774735A, wherein the fixing pin of the air bag assembly is inserted into the through hole of the metal core of the steering wheel through a resin member.

[0016] In the above-mentioned patents, the positioning between the guide sleeve in the air bag assembly and the steering wheel cannot be realized by the positioning sleeve manufactured separately.

[0017] Therefore, the applicant has made beneficial exploration and attempts, and found a solution to the above-mentioned problems. The technical scheme to be introduced below is generated in this background. SUMMARY

[0018] One of the technical problems to be solved by the present application is to provide a positioning sleeve with accurate positioning, good stability and no abnormal sound.

[0019] Another technical problem to be solved by the present application is to provide a positioning matching structure comprising the positioning sleeve.

[0020] A third technical problem to be solved by the present application is to provide an automobile steering wheel assembly comprising the positioning matching structure.

[0021] The positioning sleeve of the first aspect of the present application comprises a first inner elastic positioning part for elastically positioning a guide sleeve arranged on the airbag assembly, a second inner elastic positioning part for axially limiting and assisting in elastically positioning the pull rod, a third inner elastic positioning part for radially positioning the pull rod, and an outer elastic positioning part for elastically positioning a positioning hole arranged on the steering wheel body.

[0022] In a preferred embodiment of the present application, the first inner elastic positioning part, the second inner elastic positioning part, the third inner elastic positioning part, and the outer elastic positioning part are coaxially arranged.

[0023] In a preferred embodiment of the present application, the first inner elastic positioning part is arranged above and outside the second inner elastic positioning part.

[0024] In a preferred embodiment of the present application, the first inner elastic positioning part and / or the outer elastic positioning part has a ring-shaped cantilever structure.

[0025] In a preferred embodiment of the present application, at least two guide ribs are circumferentially and spacedly arranged on the outer ring surface of the guide sleeve matched with the first inner elastic positioning part.

[0026] In a preferred embodiment of the present application, the second inner elastic positioning part is composed of at least two circumferentially arranged elastic sheets, each of which is provided with an inner boss having an inner arc surface, and the inner boss and the first axial limiting part of the pull rod are elastically matched and positioned.

[0027] In a preferred embodiment of the present application, the lower end surface of the inner boss is a flat surface matched with the second axial limiting part of the pull rod.

[0028] In a preferred embodiment of the present application, at least two outer bosses are circumferentially and spacedly arranged on the outer ring surface of the outer elastic positioning part, and each outer boss is provided with a positioning outer arc surface at the position contacted with the positioning hole of the steering wheel body, and the positioning outer arc surface and the hole surface of the positioning hole of the steering wheel body are elastically matched and positioned.

[0029] In a preferred embodiment of the present application, the outer boss has a cantilever structure.

[0030] In a preferred embodiment of the present application, the positioning sleeve is integrally injection molded by engineering plastic.

[0031] As the positioning fitting structure of the second aspect of the present application comprising the positioning sleeve, the guide sleeve, the pull pin, the positioning sleeve and the positioning hole, the clamping steel wire arranged in the steering wheel body, the pull pin has the radial positioning part, the neck part, the first axial limiting part and the second axial limiting part; the radial positioning part is coaxially arranged with the neck part and the outer diameter of the neck part is smaller than the outer diameter of the radial positioning part, the first axial limiting part and the second axial limiting part are arranged at the upper and lower ends of the neck part, wherein the radial positioning part and the third inner elastic positioning part in the positioning sleeve are positioned by elastic radial fitting; the first axial limiting part and the second inner elastic positioning part in the positioning sleeve are elastically axially positioned and fitted and the second axial limiting part is axially positioned with the clamping steel wire, and the clamping steel wire is fixed in the steering wheel body.

[0032] In a preferred embodiment of the present application, the first axial limiting part is a flat end face or a conical face, and the second axial limiting part is a flat end face.

[0033] As the automobile steering wheel assembly comprising the positioning fitting structure of the third aspect of the present application, it comprises:

[0034] The steering wheel body; and

[0035] The airbag module mounting cavity in the steering wheel body; and

[0036] The airbag assembly and the steering wheel body are elastically positioned and fitted by the above-mentioned positioning fitting structure.

[0037] Due to the adoption of the above technical solutions, the present application has the following beneficial effects: the present application elastically positions and fits the positioning sleeve between the guide sleeve of the airbag assembly, the pull pin and the positioning hole of the steering wheel body, eliminates the gap between the guide sleeve of the airbag assembly and the positioning hole of the steering wheel body, and fundamentally solves the problems of vibration noise of the airbag assembly and press clamping of the horn switch. The overall structure of the present application is relatively compact, the work is more stable, and the practical performance of the steering wheel is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. 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 labor.

[0039] Figure 1 It is a structural schematic diagram of the steering wheel body of the present application.

[0040] Figure 2 is a structural schematic view of the airbag assembly of the present application.

[0041] Figure 3 is a structural schematic view of the airbag holder of the airbag assembly of the present application.

[0042] Figure 4 is a structural schematic view of the airbag assembly of the present application. Figure 1 is an A-A sectional view of

[0043] Figure 5 is a B-B sectional view of Figure 1

[0044] Figure 6 is a structural schematic view of the positioning fitting structure of the present application.

[0045] Figure 7 is an exploded structural schematic view of the positioning sleeve and the puller in the positioning fitting structure of the present application.

[0046] Figure 8 is a structural schematic view of the positioning sleeve in the positioning fitting structure of the present application.

[0047] Figure 9 is a partial sectional view of the positioning fitting structure of the present application.

[0048] Figure 10 is a structural schematic view of another embodiment of the puller in the positioning fitting structure of the present application.

[0049] Figure 11 is a structural schematic view of the horn switch of the present application in an overload state. DETAILED DESCRIPTION

[0050] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0051] The automobile steering wheel assembly of the present application comprises a steering wheel body 100 and an airbag assembly 200.

[0052] Referring to Figure 1 , the steering wheel body 100 has an airbag module mounting cavity 101, and three positioning holes 110 are circumferentially and spacedly formed 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 that in the present embodiment, and should be determined according to the positioning requirements and design.

[0053] Referring to Figure 2 and Figure 3 ​The air bag assembly 200 is installed in the air bag module installation cavity 101 of the steering wheel body 100. The air bag assembly 200 comprises an air bag bracket 210, an air bag clamping plate 220, a gas generator 230, an air bag 240, a cover 250 and a horn conducting assembly.

[0054] The air bag bracket 210 is installed in the air bag module installation cavity 101 of the steering wheel body 100, the air bag clamping plate 220 is fixedly arranged in the air bag bracket 210, the gas generator 230 is installed on the air bag clamping plate 220, the air bag 240 is arranged on the air bag clamping plate 220 in a folded manner and is connected with the gas generator 230, and the cover 250 is arranged on the air bag bracket 210 and covers the air bag 240. In order to ensure the assembly stability between the cover 250 and the air bag bracket 210 and prevent the cover 250 from flying out when explosion occurs, seven hooks 211 are arranged on the outer circumferential surface of the air bag bracket 210 in a circumferential direction, and seven buckles 251 corresponding to the seven hooks 211 are arranged on the circumferential edge of the cover 250 in a circumferential direction. When the cover 250 is installed on the air bag bracket 210, the seven buckles 251 on the circumferential edge of the cover 250 are correspondingly buckled into the seven hooks 211 on the outer circumferential surface of the air bag bracket 210. Of course, the number of the hooks 211 and the buckles 251 is not limited to the number in the embodiment, and the number should be designed according to actual needs.

[0055] Referring to Figure 4 and Figure 5 and focusing on Figure 2 , three guide sleeves 260 are formed on the bottom surface of the air bag bracket 210, and the three guide sleeves 260 correspond to the three positioning holes 110 on the steering wheel body 100 in a one-to-one correspondence. A draw nail 410 is arranged in each guide sleeve 260, and the flange part 415 of each draw nail 410 is hung on the upper end flange surface of the guide sleeve 260. After the draw nail 410 passes through the positioning hole 110 correspondingly, the second axial limiting part 414 of the draw nail 410 is hung on the clamping steel wire 320, so as to prevent the air bag assembly 200 from being separated from the steering wheel assembly 100 when the air bag assembly 200 is detonated.

[0056] The horn conducting assembly comprises a contact wire 310, a clamping wire 320 and three horn springs 330. The contact wire 310 is mounted on the inner bottom surface of the airbag bracket 210 through a plurality of clamps (not shown in the figure) arranged at intervals, the clamping wire 320 is arranged on the bottom surface of the airbag module mounting cavity 101 of the steering wheel body 100, and respectively forms contact with the neck portion 412 and the second axial limiting portion 414 of the three draw pins 410. The three horn springs 330 are in one-to-one correspondence with the three guide sleeves 260, and each horn spring 330 is correspondingly sleeved on the outer cylinder surface of the guide sleeve 260, with the upper end abutting against the bottom surface of the airbag bracket 210 of the airbag assembly 200 and the lower end abutting against the middle flange surface of the positioning sleeve 420. When the airbag assembly 200 is pressed, the three horn springs 330 on the outer cylinder surface of the three guide sleeves 260 are compressed downward, while the three draw pins 410 remain stationary, and the contact wire 310 on the airbag bracket 210 moves downward, and the contact wire 310 touches the upper end surface of the draw pin 410 during the downward movement, so that the contact wire 310 is electrically conducted through the draw pin 410, thereby sounding the horn.

[0057] Referring to Figure 11 , the airbag assembly 200 is continuously pressed downward after the horn is conducted, and the first axial limiting portion 413 of the draw pin 410 drives the second inner elastic limiting portion 422 of the positioning sleeve 420 to open, thereby allowing the contact wire 310 to drive the draw pin 410 to continue to move downward until the guide sleeve 260 contacts the hard limiting portion 425 of the positioning sleeve 420.

[0058] Referring to Figures 4 to 10 , the airbag assembly 200 and the steering wheel body 100 of the present application are elastically positioned and matched through a positioning and matching structure 400. Specifically, the positioning and matching structure comprises the above-mentioned guide sleeve 260, draw pin 410, positioning sleeve 420 and clamping wire 320. The draw pin 410 is arranged in the guide sleeve 260, and the positioning sleeve 420 is mounted outside the guide sleeve 260.

[0059] The draw pin 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. 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 arranged at the upper and lower ends of the neck portion 412. In this embodiment, the first axial limiting portion 413 is a tapered surface or a flat end surface, and the second axial limiting portion 414 is a flat end surface.

[0060] The positioning sleeve 420 has a first inner elastic positioning part 421, a second inner elastic positioning part 422, an outer elastic positioning part 423 and a third inner elastic positioning part 424. The first inner elastic positioning part 421 elastically and radially positions the guide sleeve 260 arranged on the air bag assembly 200, the second inner elastic positioning part 422 elastically and radially positions the puller 410 arranged on the air bag assembly 200, and at the same time, the second inner elastic positioning part 422 also elastically positions the puller 410 in the axial direction (upwardly lifts), the outer elastic positioning part 423 elastically and radially positions the positioning hole 110 arranged on the steering wheel body 100, and the third inner elastic positioning part 424 elastically and radially positions the radial positioning part 411 of the puller 410. The first inner elastic positioning part 421, the second inner elastic positioning part 422, the outer elastic positioning part 423 and the third inner elastic positioning part 424 are coaxially arranged.

[0061] The first inner elastic positioning part 421 has a ring-shaped cantilever structure. Specifically, a guide protrusion 260a is arranged on the guide sleeve 260 and cooperates with a guide surface 421a on the first inner elastic positioning part 421, so that the linear surface cooperation positioning is more accurate and the movement is more flexible. Of course, the guide protrusion 260a is not necessary, and the guide surface 421a can be directly used to elastically and radially position the guide sleeve 260 in order to further simplify the structure.

[0062] The second inner elastic positioning part 422 is composed of three elastic sheets 422a arranged in a circumferential shape. Of course, the number of the elastic sheets 422a is not limited to that in the embodiment, and at least two elastic sheets 422a can be arranged according to the positioning requirement. An inner boss 422a' is arranged at a position where each elastic sheet 422a contacts the puller 410, and the inner boss 422a' elastically and radially cooperates with the first axial limiting part 413 of the puller 410 to limit the downward movement of the puller 410 before the puller 410 contacts the contact wire 310. The elastic cooperation here can be one of gap cooperation, 0-gap elastic cooperation or interference elastic cooperation. The puller 410 is elastically and axially arranged in the positioning sleeve 420. Since the second inner elastic positioning part 422 has good elasticity, when the upper end surface of the puller 410 contacts the contact wire 310 and is driven to continue to move downwardly by the pressing force after the second inner elastic positioning part 422 is opened, the hard limiting part 425 of the guide sleeve 260 and the positioning sleeve 420 is contacted, as shown in FIG. 6, so as to ensure the reliable elastic contact between the contact wire 310 and the puller 410, reduce the collision noise when the upper end surfaces of the contact wire 310 and the puller 410 contact, and avoid damage to the horn conduction assembly due to strong operation. Figure 11

[0063] ​The bottom end surface 422b of the elastic sheet 422a cooperates with the second axial limiting portion 414 of the lower portion of the pull rod 410 to prevent the positioning sleeve 420 from falling off before the airbag assembly 200 is installed to the steering wheel body 100. When the airbag assembly 200 is installed to the steering wheel body 100, the bottom end surface 422b of the elastic sheet 422a is away from the second axial limiting portion 414 and no longer prevents the positioning sleeve 420 from falling off.

[0064] The third inner elastic positioning portion 424 has an inner arc surface structure, and three guide ribs 424a are circumferentially spaced on the inner annular surface of the third inner elastic positioning portion 424. Of course, the number of the guide ribs 424a is not limited to the number in the embodiment. The guide ribs 424a respectively elastically cooperate with the radial positioning portion 411 of the pull rod 410 in the radial direction to prevent the pull rod 410 from shaking inside the guide sleeve 260 and generating abnormal sound. The elastic cooperation can be one of clearance fit, 0-clearance elastic fit or interference elastic fit. Of course, the guide ribs 424a are not necessary, and the inner arc surface of the third inner elastic positioning portion 424 can directly cooperate with the radial positioning portion 411 of the pull rod 410 in the radial direction to further simplify the structure.

[0065] In addition, the guide sleeve 260 is provided with axially extending notches 261 circumferentially spaced thereon, so that the end of the guide sleeve 260 cooperating with the first inner elastic positioning portion has better elasticity. The number of the notches 261 corresponds to the number of the third inner elastic positioning portion 424. When the positioning sleeve 420 is installed, the third inner elastic positioning portion 424 is located in the three notches 261 of the guide sleeve 260 respectively. The third inner elastic positioning portion 424 clearance fits with the side surface of the notches 261 to prevent the positioning sleeve 420 from rotating around the guide sleeve 260 after being installed.

[0066] The outer elastic positioning portion 423 has an annular structure, and three outer bosses 423a are circumferentially spaced on the outer annular surface of the outer elastic positioning portion 423. Of course, the number of the outer bosses 423a is not limited to the number in the embodiment, and at least two outer bosses 423a can be provided according to positioning requirements. A positioning outer arc surface 423a' is arranged at the position where each outer boss 423a contacts the positioning hole 110 of the steering wheel body 100. The positioning outer arc surface 423a' elastically cooperates with the hole surface of the positioning hole 110 of the steering wheel body 100 to position the positioning sleeve 420 in the positioning hole 110. The elastic cooperation can be one of clearance elastic fit, 0-clearance elastic fit or interference elastic fit. In the embodiment, the outer boss 423a preferably has a cantilever structure.

[0067] 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 integrally formed by injection molding. In the embodiment, the positioning sleeve 420 is preferably made of engineering plastic material and is formed by injection molding.

[0068] When the air bag assembly 200 is installed into the steering wheel body 100, the second axial limiting portion 414 of the pull pin 410 is in axial positioning cooperation with the clamping wire 320 fixed in the steering wheel body 100. In order to further reduce the contact noise of the pull pin 410, a soft damping sleeve 417 can be wrapped on the upper flange portion 415 of the pull pin 410.

[0069] In order to avoid damage or falling of the contact wire 310 when the horn switch is operated with great force, a boss 221 is arranged on the air bag clamp plate 220 to press on the contact wire 310.

[0070] The specific installation process of the automobile steering wheel assembly of the present application is as follows:

[0071] Firstly, the horn spring 330 is installed on the positioning sleeve 420 to form a first-1 combination, then the first-1 combination is installed on the guide sleeve 260, and then the pull pin 410 is passed through the hole in the guide sleeve 260 and the hole in the positioning sleeve 420 from the inside of the air bag bracket 210, and finally the flat end surface of the second inner elastic positioning portion 422 clamps the second axial limiting portion 414 to form a first combination;

[0072] Secondly, the contact spring 340 is installed in the installation groove (not shown in the figure) in the air bag bracket 210, and then the contact wire 310 is pressed into the installation groove (not shown in the figure) in the air bag bracket 210, and the buckle (not shown in the figure) arranged near the installation groove is used to assemble them together to form a second combination;

[0073] Thirdly, the gas generator 230 is installed on the air bag clamp plate 220 to form a third-1 combination, then the third-1 combination is placed into the air bag 240, and the bottom of the gas generator 230 and the bolt column (not labeled in the figure) of the air bag clamp plate 220 are exposed to form a third-2 combination, then the third-2 combination is placed into the second combination and folded into a shape, and finally the nut 270 is used to fix them together to form a third combination;

[0074] Fourthly, the third combination is pressed into the cover 250, and the hook 211 and the buckle 251 are used to assemble them together to form the air bag assembly 200;

[0075] Fifthly, the air bag assembly 200 is installed on the steering wheel body 100, the positioning sleeve 420 is embedded into the positioning hole 110 in the steering wheel body 100, and the second axial limiting portion 414 of the pull pin 410 is clamped by the clamping wire 320.

[0076] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A positioning sleeve, characterized in that At least a first inner elastic positioning part elastically radially positioning a guide sleeve arranged on the airbag assembly, a second inner elastic positioning part axially limiting and assisting in elastically radially positioning the pull rod, a third inner elastic positioning part radially positioning the pull rod, and an outer elastic positioning part elastically radially positioning a positioning hole arranged on the steering wheel body; the first inner elastic positioning part, the second inner elastic positioning part, the third inner elastic positioning part, and the outer elastic positioning part are coaxially arranged; The first inner elastic positioning part is located above and outside the second inner elastic positioning part; The first inner elastic positioning part and / or the outer elastic positioning part is in a ring structure; The first inner elastic positioning part elastically radially positions the guide sleeve or a guide rib arranged on the guide sleeve; The third inner elastic positioning part or a guide rib arranged on the third inner elastic positioning part elastically radially positions the radial positioning part of the pull rod; The second inner elastic positioning part is composed of at least two circumferentially arranged elastic sheets, an inner boss with an inner arc surface is arranged at the bottom of each elastic sheet, and the inner boss elastically axially positions the first axial limiting part of the pull rod; The bottom end surface of the inner boss cooperates with the second axial limiting part of the pull rod; At least two outer bosses are circumferentially spaced on the outer ring surface of the outer elastic positioning part, a positioning outer arc surface is arranged at the position where each outer boss contacts the positioning hole on the steering wheel body, and the positioning outer arc surface and the positioning hole on the steering wheel body are elastically cooperated for positioning.

2. The positioning sleeve of claim 1, wherein, The first inner elastic positioning part and the outer elastic positioning part adopt a cantilever structure.

3. The positioning sleeve of claim 1 wherein, The positioning sleeve is integrally injection molded by engineering plastic material.

4. A positioning fitting structure characterized by, The positioning sleeve is integrally injection molded by engineering plastic material.

5. The positioning fitting structure according to claim 4, wherein The positioning sleeve is integrally injection molded by engineering plastic material. The positioning sleeve is integrally injection molded by engineering plastic material.

6. An automobile steering wheel assembly, comprising: a steering wheel body; and an airbag assembly mounted in an airbag module mounting cavity of the steering wheel body; characterized in that the airbag assembly and the steering wheel body are elastically positioned and cooperated by the positioning and cooperating structure according to any one of claims 4 or 5.

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