CN115042736A

CN115042736A - Airbag mounting structure and steering wheel

Info

Publication number: CN115042736A
Application number: CN202210753539.9A
Authority: CN
Inventors: 相东; 李秀梅; 李凯; 徐飞扬; 赵海利; 李佼龙
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-09-13

Abstract

The invention discloses an air bag mounting structure and a steering wheel, and belongs to the technical field of vehicles. The air bag mounting structure comprises a fixing pin and a limiting assembly, wherein one end of the fixing pin is fixedly connected with a shell of an air bag, and the other end of the fixing pin can be inserted into a mounting hole; one side of the fixing pin is provided with a limiting groove; the limiting assembly comprises a limiting block and a limiting elastic piece, the limiting block is slidably arranged in the limiting hole, and the limiting elastic piece is configured to enable the limiting block to always have a movement trend close to the fixing pin so as to enable the limiting block to be inserted into the limiting groove; the limiting block is made of a magnetic material, so that the limiting block can be attracted by the magnet and separated from the limiting groove when the external magnet is close to the steering wheel. The stopper adopts magnetic material to make, when the gasbag was dismantled to needs, only needs to press close to the steering wheel with magnet, can utilize the magnetism of magnet to follow stopper suction from the spacing groove, can not destroy the integrality of steering wheel outward appearance, simple operation, laborsaving.

Description

Airbag mounting structure and steering wheel

Technical Field

The invention relates to the technical field of vehicles, in particular to an air bag mounting structure and a steering wheel.

Background

Current passenger car steering wheel air bag generally adopts the spring joint to be fixed in the steering wheel, and it is common to have two kinds of dismantlements modes, side dismantlement formula and back of the body dismantlement formula promptly, and these two kinds of dismantlements modes all need use tools to pull out the spring through the hole of dismantling at steering wheel side or the back and dismantle. The side-dismantling steering wheel is provided with a side-dismantling hole in advance on the side surface of the steering wheel, and the surface of the steering wheel can be damaged and foamed after once dismantling, so that the attractiveness of the steering wheel is influenced; the steering wheel of formula is torn open to the back, need tear the guard shield on the steering column down earlier when dismantling the gasbag, and the step is loaded down with trivial details, and the instrument operating space is torn open to the back little, is difficult to dismantle.

Disclosure of Invention

The invention aims to provide an air bag mounting structure and a steering wheel, which improve the convenience of assembling and disassembling an air bag and do not damage the integrity of the appearance of the steering wheel.

In order to realize the purpose, the following technical scheme is provided:

on the one hand, an air bag mounting structure is provided for mounting an air bag on a steering wheel, wherein the steering wheel is provided with a mounting hole and a limiting hole communicated with the mounting hole, and the air bag mounting structure comprises:

one end of the fixing pin is fixedly connected with the shell of the air bag, and the other end of the fixing pin can be inserted into the mounting hole; one side of the fixing pin is provided with a limiting groove;

the limiting assembly comprises a limiting block and a limiting elastic piece, the limiting block is slidably arranged in the limiting hole, and the limiting elastic piece is configured to enable the limiting block to always have a motion trend close to the fixing pin, so that the limiting block can be inserted in the limiting groove to limit the fixing pin from being separated from the mounting hole; the limiting block is made of a magnetic material, so that the limiting block can be attracted by the magnet and separated from the limiting groove when the external magnet is close to the steering wheel.

As an alternative of the airbag mounting structure, one end of the limiting elastic member is connected with the limiting block, and the other end of the limiting elastic member is connected with the outside of the steering wheel through foaming.

As an alternative of the airbag mounting structure, the limiting block has two end faces opposite to each other in the sliding direction, and the surfaces of the limiting block except the two end faces are provided with engineering plastic layers.

As an alternative to the airbag mounting structure, a lubricant is provided between the fixing pin and the inner wall of the mounting hole.

As an alternative to the airbag mounting structure, the limiting groove has a first groove wall and a second groove wall which are opposite to each other in the axial direction of the fixing pin, and the second groove wall is located on one side of the limiting groove away from the airbag;

the limiting block abuts against the second groove wall, and a first gap is formed between the limiting block and the first groove wall.

As an alternative scheme of the air bag mounting structure, a second gap is formed between one end, deviating from the limiting elastic piece, of the limiting block and the fixing pin.

As an alternative to the airbag mounting structure, the fixing pin includes:

a main body section having one end connected to a housing of the airbag;

a tapered section having a large diameter end connected to the other end of the main body section.

As an alternative of the airbag mounting structure, the stopper includes a stopper portion, the stopper hole includes a stopper fitting portion, and the stopper portion can abut against the stopper fitting portion to restrict the stopper from being disengaged from the stopper hole.

As an alternative to the airbag mounting structure, the thickness of the stopper is equal to the height of the stopper hole in the axial direction of the fixing pin.

In another aspect, there is provided a steering wheel characterized by comprising an airbag and a plurality of airbag mounting structures as described in any one of the above, the airbag being mounted to the steering wheel by the airbag mounting structures.

As an alternative to the steering wheel, further comprising:

the pressing piece is sleeved on the outer side of the fixing pin and abutted against the bottom of the shell of the air bag, and the pressing piece can be contacted with the ringing mechanism so as to make the ringing mechanism generate sound;

a return spring configured to cause the pusher to have a tendency to move away from the clicking mechanism at all times.

Compared with the prior art, the invention has the beneficial effects that:

according to the airbag mounting structure and the steering wheel, the limiting blocks are made of magnetic materials, when the airbag needs to be dismounted, the limiting blocks can be sucked out of the limiting grooves by utilizing the magnetism of the magnets only by pressing the magnets to the steering wheel, and then the fixing pins can be pulled out of the mounting holes to dismount the airbag from the steering wheel.

Drawings

FIG. 1 is a first schematic view illustrating a fitting relationship between an airbag mounting structure and a steering wheel according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a second schematic view of the airbag mounting structure and the steering wheel according to an embodiment of the present invention;

FIG. 4 is a third schematic view showing the fitting relationship between the airbag mounting structure and the steering wheel in the embodiment of the present invention;

FIG. 5 is a schematic view of the magnet and the steering wheel in the case of detaching the airbag according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a limiting block in the embodiment of the present invention;

fig. 7 is a schematic view of a matching relationship between a limiting block and a limiting hole in the embodiment of the invention.

Reference numerals:

100. a magnet; 1. an air bag; 2. an airbag mounting structure; 21. a fixing pin; 211. a limiting groove; 2111. a first slot wall; 2112. a second slot wall; 212. a main body section; 213. a tapered section; 22. a limiting component; 221. a limiting block; 2211. an engineering plastic layer; 2212. a limiting part; 222. a limiting elastic part; 23. a first gap; 24. a second gap; 31. a framework; 311. mounting holes; 312. a limiting hole; 3121. a limit matching part; 32. foaming; 4. a pressing piece; 5. a press-ringing mechanism; 6. a return spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 7, the present embodiment provides an airbag mounting structure 2 and a steering wheel including an airbag 1 and a plurality of airbag mounting structures 2, the airbag 1 being mounted to the steering wheel by the airbag mounting structures 2. Preferably, a plurality of airbag mounting structures 2 are arranged at equal intervals along the circumferential direction of the steering wheel, which is beneficial to improving the stability of fixing the airbag 1.

Among the prior art, the air bag of steering wheel generally adopts the spring joint to be fixed in the steering wheel, and it is common have two kinds of dismantlements modes, side formula of tearing open and back of the body formula of tearing open promptly, and wherein, the formula of tearing open can destroy steering wheel surface foaming, and the formula of tearing open back needs to pull down the guard shield on the steering column earlier, and the step is loaded down with trivial details, difficult dismantlement.

In order to solve the above problem, in the present embodiment, the steering wheel is provided with a mounting hole 311 and a limiting hole 312 communicated with the mounting hole 311, specifically, both the mounting hole 311 and the limiting hole 312 are opened in the frame 31 of the steering wheel; the airbag mounting structure 2 comprises a fixing pin 21 and a limiting component 22, wherein one end of the fixing pin 21 is used for being fixedly connected with the shell of the airbag 1, and the other end of the fixing pin can be inserted into the mounting hole 311; one side of the fixing pin 21 is provided with a limit groove 211; the limiting assembly 22 comprises a limiting block 221 and a limiting elastic piece 222, the limiting block 221 is slidably disposed in the limiting hole 312, and the limiting elastic piece 222 is configured to enable the limiting block 221 to have a movement tendency close to the fixing pin 21 all the time, so that the limiting block 221 can be inserted into the limiting groove 211 to limit the fixing pin 21 from being released from the mounting hole 311; the stopper 221 is made of a magnetic material so that the stopper 221 can be attracted by the magnet 100 and be released from the stopper groove 211 when the external magnet 100 is close to the steering wheel.

The stopper 221 is made of magnetic materials, when the airbag 1 needs to be disassembled, only the magnet 100 needs to be attached to the steering wheel, the stopper 221 can be sucked out of the limiting groove 211 through the magnetism of the magnet 100, the fixing pin 21 can be further pulled out of the mounting hole 311, the airbag 1 is disassembled from the steering wheel, compared with the prior art, the disassembling hole does not need to be reserved on the steering wheel, the steering wheel and other peripheral parts of the steering wheel do not need to be disassembled, and the operation is convenient and labor-saving.

Optionally, the steering wheel comprises a pressing piece 4, a ringing mechanism 5 and a return spring 6, the pressing piece 4 is sleeved outside the fixing pin 21 and abuts against the bottom of the shell of the air bag 1, and the pressing piece 4 can be in contact with the ringing mechanism 5 to make the ringing mechanism 5 generate sound; the return spring 6 is configured to always have a tendency for the pusher 4 to move away from the clicking mechanism 5. With the arrangement, when the airbag 1 needs to be disassembled, after the limiting block 221 is sucked out of the limiting groove 211 by the magnet 100, the airbag 1 and the shell thereof can be upwards bounced under the action of the reset elastic force of the reset spring 6, so that the disassembly convenience of the airbag 1 is improved, and the action of the sounding mechanism 5 cannot be interfered. In addition, in the process of inserting the fixing pin 21 into the mounting hole 311, the pressing piece 4 can also play a role in guiding the fixing pin 21, and the airbag 1 is pressed until the limiting block 221 is inserted into the limiting groove 211, so that the airbag 1 is fixed.

Optionally, the limiting groove 211 has a first groove wall 2111 and a second groove wall 2112 which are opposite to each other in the axial direction of the fixing pin 21, and the second groove wall 2112 is located on the side of the limiting groove 211 away from the airbag 1; the limiting block 221 abuts against the second groove wall 2112, a first gap 23 is arranged between the limiting block 221 and the first groove wall 2111, and a pressing space is reserved for the ringing mechanism 5 by using the first gap 23.

Alternatively, one end of the stopper elastic member 222 is connected to the stopper 221, and the other end is connected to the foam 32 outside the steering wheel. The limit elastic member 222 is directly connected with the foam 32 outside the steering wheel, so that the influence of other structural members arranged between the limit elastic member 222 and the foam 32 on the magnetic force of the magnet 100 can be avoided, and the magnet 100 can be ensured to fast and stably attract the limit block 221. Illustratively, the check spring 222 is a spring.

Illustratively, the check spring 222 may be integrally molded with the foam 32 on the outer side of the steering wheel to ensure the connection stability of the two. Of course, the elastic limiting element 222 can also be fixedly connected with the foam 32 outside the steering wheel by gluing, interference embedding and the like.

Alternatively, the stopper 221 has two end surfaces opposite to each other in the sliding direction thereof, and the surfaces of the stopper 221 except for the two end surfaces are provided with engineering plastic layers 2211. The engineering plastic layer 2211 can reduce the friction force between the limiting block 221 and the inner wall of the limiting hole 312, eliminate abnormal noise generated by the collision between the limiting hole 312 and the fixing pin 21 and improve the NVH performance of the vehicle.

Illustratively, the engineering plastic layer 2211 is injection-molded on the surface of the limiting block 221 by using a nylon material, so that the engineering plastic layer 2211 can be ensured to be more snugly coated on the surface of the limiting block 221, and the smooth sliding of the limiting block 221 along the limiting hole 312 is facilitated; the nylon material has good wear resistance and long service life.

Optionally, a lubricant is provided between the fixing pin 21 and the inner wall of the mounting hole 311, which is beneficial to smooth sliding of the fixing pin 21 in the mounting hole 311, and reduces abrasion and abnormal noise. For example, a small amount of grease may be applied to the inner wall of the mounting hole 311 for lubrication.

Optionally, a second gap 24 is provided between one end of the limiting block 221 facing away from the limiting elastic piece 222 and the fixing pin 21. When the click mechanism 5 is pressed, the fixing pin 21 slides up and down along the mounting hole 311 along with the click member 4, and the second gap 24 prevents the stopper 221 from rubbing against the fixing pin 21 to generate abnormal noise.

Alternatively, the fixing pin 21 includes a main body section 212 and a tapered section 213, and illustratively, the main body section 212 is a cylindrical structure, and one end of the main body section 212 is connected to the housing of the airbag 1; the large diameter end of the tapered section 213 is connected to the other end of the main body section 212. In the process of inserting the fixing pin 21 into the mounting hole 311, the tapered section 213 may guide the stopper 221 and push the stopper 221 back to the limiting hole 312 until the stopper 221 is aligned with the limiting groove 211 of the fixing pin 21, and then the stopper 221 is inserted into the limiting groove 211 under the elastic force of the limiting elastic member 222 to fix the fixing pin 21.

In this embodiment, along the fixed pin 21 axial, the thickness of stopper 221 equals the height in spacing hole 312 to make stopper 221 can slide along spacing hole 312, still can not rock in spacing hole 312 along the fixed pin 21 axial, make stopper 221 can play stable limiting displacement to fixed pin 21.

In order to avoid the separation of the limiting block 221 from the limiting hole 312, which results in that the limiting block 221 cannot limit the fixing pin 21, optionally, the limiting block 221 includes a limiting portion 2212, the limiting hole 312 includes a limiting fitting portion 3121, and the limiting portion 2212 can abut against the limiting fitting portion 3121 to limit the separation of the limiting block 221 from the limiting hole 312. In this embodiment, the limiting portion 2212 is an inclined plane disposed on two sides of the limiting block 221, so that the limiting block 221 is wedge-shaped, correspondingly, the limiting fitting portion 3121 is two inner walls of the limiting hole 312 disposed oppositely, and the two inner walls are inclined, so that the limiting hole 312 is wedge-shaped, and cooperates with the wedge-shaped limiting block 221, so that the limiting block 221 can slide along the limiting hole 312 to insert or disengage from the limiting groove 211, and the limiting block 221 can be prevented from disengaging from the limiting hole 312. Of course, the limiting portion 2212 and the limiting engagement portion 3121 may have other structures, as long as the limiting portion 2212 abuts against the limiting engagement portion 3121 to limit the limiting block 221 from coming out of the limiting hole 312, and the invention is not limited herein.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An airbag mounting structure for mounting an airbag (1) to a steering wheel provided with a mounting hole (311) and a stopper hole (312) communicating with the mounting hole (311), characterized in that the airbag mounting structure (2) includes:

one end of the fixing pin (21) is fixedly connected with the shell of the air bag (1), and the other end of the fixing pin (21) can be inserted into the mounting hole (311); one side of the fixing pin (21) is provided with a limiting groove (211);

the limiting assembly (22) comprises a limiting block (221) and a limiting elastic piece (222), the limiting block (221) is slidably arranged in the limiting hole (312), and the limiting elastic piece (222) is configured to enable the limiting block (221) to have a movement trend close to the fixing pin (21) all the time, so that the limiting block (221) can be inserted into the limiting groove (211) to limit the fixing pin (21) to be separated from the mounting hole (311); the limiting block (221) is made of a magnetic material, so that the limiting block (221) can be attracted by the outer magnet (100) when the outer magnet (100) is close to the steering wheel and can be separated from the limiting groove (211).

2. The airbag mounting structure according to claim 1, wherein one end of the stopper elastic member (222) is connected to the stopper (221), and the other end is connected to the foam (32) outside the steering wheel.

3. The airbag mounting structure according to claim 1, wherein the stopper (221) has two end surfaces opposed in the sliding direction thereof, and the stopper (221) is provided with an engineering plastic layer (2211) on a surface other than the two end surfaces.

4. The airbag mounting structure according to claim 1, wherein a lubricant is provided between the fixing pin (21) and an inner wall of the mounting hole (311).

5. The airbag mounting structure according to claim 1, wherein the retainer groove (211) has a first groove wall (2111) and a second groove wall (2112) that are axially opposed along the fixing pin (21), the second groove wall (2112) being located on a side of the retainer groove (211) away from the airbag (1);

the limiting block (221) is abutted to the second groove wall (2112), and a first gap (23) is formed between the limiting block (221) and the first groove wall (2111).

6. The airbag mounting structure according to claim 1, wherein a second gap (24) is provided between an end of the stopper (221) facing away from the stopper spring (222) and the fixing pin (21).

7. The airbag mounting structure according to claim 1, wherein the fixing pin (21) includes:

a main body section (212), one end of the main body section (212) being connected to a housing of the airbag (1);

a tapered section (213), the large diameter end of the tapered section (213) being connected to the other end of the main body section (212).

8. The airbag mounting structure according to claim 1, wherein the stopper (221) includes a stopper portion (2212), the stopper hole (312) includes a stopper fitting portion (3121), and the stopper portion (2212) is capable of abutting against the stopper fitting portion (3121) to restrict the stopper (221) from coming out of the stopper hole (312).

9. The airbag mounting structure according to claim 8, wherein the thickness of the stopper (221) is equal to the height of the stopper hole (312) in the axial direction of the fixing pin (21).

10. A steering wheel, comprising an airbag (1) and a plurality of airbag mounting structures (2) according to any one of claims 1 to 9, the airbag (1) being mounted to the steering wheel by means of the airbag mounting structures (2).

11. The steering wheel according to claim 10, further comprising:

the pressing piece (4) is sleeved on the outer side of the fixing pin (21) and abutted to the bottom of the shell of the air bag (1), and the pressing piece (4) can be in contact with the pressing mechanism (5) so that the pressing mechanism (5) can make a sound;

a return spring (6), wherein the return spring (6) is configured to enable the pressing piece (4) to always have a movement trend away from the ringing mechanism (5).