Airbag disassembly structure

Abstract

The utility model discloses an airbag disassembly structure, which relates to a steering wheel of a motor vehicle, including an airbag module assembly and a steering wheel frame assembly, wherein the airbag module assembly includes a connecting pin; the steering wheel frame assembly includes a frame, a lower steering wheel cover and a steel wire, wherein the steel wire is fixed to the frame, and the lower steering wheel cover is engaged with the bottom of the frame; the connecting pins on the airbag module assembly are deformed by squeezing the steel wire on the steering wheel frame, and the pins are respectively hung on the steel wire on the steering wheel frame to achieve the connection between the airbag module assembly and the steering wheel; a disassembly groove is provided at the bottom of the lower steering wheel cover for guiding during disassembly. The utility model eliminates the traditional steering wheel disassembly hole, and adds a disassembly groove at the bottom of the lower steering wheel cover to ensure the aesthetics of the steering wheel. When the driver's airbag is disassembled, a disassembly tool is used to follow the disassembly groove and forcefully press against one end of the retaining spring, and the pin of the driver's airbag will be automatically ejected, thereby smoothly disassembling.

Description

Technical Field

[0001] The utility model relates to a steering wheel structure of a motor vehicle, in particular to a safety airbag disassembly structure. Background Art

[0002] There are two ways to remove the driver airbag (DAB) of a traditional car: 1. When the lower cover of the steering wheel is a foam body, there will be a hidden hole for disassembly on the lower cover of the steering wheel due to the low hardness of the foam material. There needs to be a mark of the hidden hole on the foam body. When the DAB needs to be disassembled, it is necessary to use a disassembly tool to poke the disassembly hole, which will affect the integrity of the steering wheel appearance; 2. When the lower cover of the steering wheel is a plastic part, there needs to be a visible hole on the lower cover as a disassembly hole. Both methods will affect the overall appearance of the steering wheel. Utility Model Content

[0003] The purpose of the utility model is to provide a safety airbag disassembly structure to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: an airbag disassembly structure, comprising an airbag module assembly and a steering wheel frame assembly, the airbag module assembly comprising a connecting pin;

[0005] The steering wheel frame assembly includes a frame, a steering wheel lower protective cover and a steel wire, the steel wire is fixed on the frame, and the steering wheel lower protective cover is clamped on the bottom of the frame;

[0006] The connecting pins on the airbag module assembly are deformed by the steel wires on the steering wheel frame, and the pins are hung on the steel wires on the steering wheel frame to achieve the connection between the airbag module assembly and the steering wheel;

[0007] A disassembly groove is provided at the bottom of the steering wheel lower cover for guiding during disassembly.

[0008] Preferably, three pins, three steel wires and three disassembly grooves are provided, and the three pins are located at positions 3H, 6H and 9H on the airbag module assembly;

[0009] The three steel wires are located at 3H, 6H, and 9H on the skeleton;

[0010] The three disassembly grooves are respectively located directly below the three steel wires.

[0011] Preferably, a slot matching the steel wire is provided at the bottom of the pin.

[0012] Preferably, the airbag module assembly also includes a decorative cover, a support plate assembly, a guide sleeve, and a horn spring. The guide sleeve is fixedly installed at the bottom of the pin, and a horn spring is installed at the upper end of the guide sleeve. The decorative cover is fixedly connected to the support plate assembly. By pressing the decorative cover downward, the decorative cover can slide downward on the outside of the pin with the support plate assembly, so that the horn spring works.

[0013] Preferably, the decorative cover is fixedly mounted with a bearing plate by means of bolts, and a slot matching the bearing plate is provided on the outer side of the support plate assembly.

[0014] Preferably, a fixing groove is further provided below the pin, the fixing groove is located at the upper position of the clamping groove, and a fixing ring matching the fixing groove is provided on the inner side of the guide sleeve.

[0015] Preferably, when the steering wheel assembly is returned to the center, the lines between 3H, 6H, and 9H are distributed in a positive "T" shape.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model eliminates the traditional steering wheel disassembly hole and adds a disassembly groove at the bottom of the steering wheel lower cover to ensure the aesthetics of the steering wheel. When the driver's airbag is disassembled, a disassembly tool is used to follow the disassembly groove and forcefully press against one end of the steel wire, and the pin of the driver's airbag will be automatically ejected, so that the disassembly is smooth, and the integrity and aesthetics of the appearance of the steering wheel lower cover can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the safety airbag assembly of the utility model;

[0019] Figure 2 This is a structural diagram of the steering wheel skeleton assembly of the utility model;

[0020] Figure 3 This is a matching diagram of the airbag and steering wheel skeleton assembly module of the utility model;

[0021] Figure 4 This is a structural diagram of the lower protective cover and disassembly slot of the utility model;

[0022] Figure 5 This is a disassembled state diagram of the utility model;

[0023] Figure 6 This is a diagram showing the unhooking state of a single pin of the airbag and steering wheel assembly module of the utility model;

[0024] Figure 7 The utility model is a convex state where the airbag and steering wheel assembly module are unhooked as a whole;

[0025] Figure 8 This is the pin structure diagram of the utility model;

[0026] Fig. 9 This is a cross-sectional view of the driver's airbag connection structure of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-9 The present embodiment provides a safety airbag disassembly structure, including an airbag module assembly 10, which is mainly composed of a decorative cover assembly 16, a connecting pin 11, a support plate assembly 12, a support plate overmolded part 13, the support plate overmolded part 13 is wrapped around the outer bottom of a guide sleeve 14, the guide sleeve 14, a horn spring 15 and other components; a fixing groove is also provided below the pin 11, the fixing groove is located at the upper position of the card slot, a fixing ring matching the fixing groove is provided on the inner side of the guide sleeve 14, the guide sleeve 14 is fixedly installed at the bottom of the pin 11, a horn spring 15 is installed at the upper end of the guide sleeve 14, the decorative cover 16 is fixedly connected to the support plate assembly 12, and the support plate The lower part of the assembly 12 contacts with the horn spring 15, and the horn spring 15 provides an upward supporting force for the support plate assembly 12. A bearing plate 2 is arranged between the decorative cover 16 and the support plate assembly 12, and the bearing plate 2 and the decorative cover 16 are fixed together by bolts. A card slot matching the bearing plate 2 is opened on the outer side of the support plate assembly 12, and the bottom of the bearing plate 2 is fixed in the card slot. Pressing the decorative cover 16 downward, the decorative cover 16 can slide downward on the outer side of the pin 11 with the support plate assembly 12, so that the horn spring 15 works. The working principle of the spring horn can refer to the Chinese patent with announcement number CN117227825A, a steering wheel airbag module assembly.

[0029] When the steering wheel assembly is in the normal state (i.e. the wheels are facing straight ahead), the connecting lines between 3H, 6H and 9H are arranged in a positive "T" shape.

[0030] like Figure 6As shown, the steering wheel skeleton assembly 20 is mainly composed of a skeleton 22 and three steel wires 21. Mounting holes are provided at positions 3H, 6H, and 9H on the skeleton 22, and the three steel wires 21 are located at positions 3H, 6H, and 9H of the skeleton 22; the steel wire 21 is made of spring steel and is formed into a ring buckle structure (since the steel wire 21 is elastic and made of spring steel, it can also be called a retaining spring), and the ring buckle is an open structure, one end of the steel wire 21 is fixedly connected to the skeleton 22, and the other end is a movable end. A card slot matching the steel wire 21 is provided at the bottom of the pin 11. When the steel wire 21 is stuck together with the pin, the pin 11 is located in the ring buckle of the steel wire 21, and the steel wire is stuck together with the card slot. Since the steel wire 21 is made of spring steel, it has resilience and can maintain the card connection with the card slot without being affected by external forces.

[0031] When assembling DAB, the three connecting pins 11 of 3H, 6H, and 9H on the DAB assembly are deformed with the three steel wires 21 of 3H, 6H, and 9H on the extruded steering wheel frame, and finally the three pins on the DAB will be hung on the three steel wires on the steering wheel frame, such as Figure 3 As shown, the connection between DAB and the steering wheel is realized.

[0032] like Figure 4 As shown, the bottom of the steering wheel lower cover has three disassembly grooves 41 at 3H, 6H, and 9H, respectively, which can guide the disassembly tool 51. When the DAB assembly needs to be disassembled, the three hooks can be disassembled separately. The disassembly method is the same and can be carried out in the order of disassembly 3H, 6H, and 9H. Figure 5 Taking the disassembly of the 3H position as an example, the disassembly tool is inserted from the gap between the steering wheel lower cover and the combination switch cover, and placed in the guide groove of the 3H lower cover. At this time, the top of the disassembly tool is facing the active end of the steel wire 21 at the 3H position of the steering wheel assembly. Figure 6 Push the removal tool hard (about 8mm inward), and the steel wire 21 at the 3H position on the steering wheel frame will deform until the DAB pin is completely unhooked from the steel wire of the steering wheel. Figure 7 Unhooked state; perform the same operation on 3H, 6H, and 9H respectively, and all the hooks of DAB will be completely separated from the steel wires on the frame, realizing the removal of DAB from the steering wheel.

[0033] The traditional steering wheel disassembly hole is eliminated, and a disassembly groove is added at the bottom of the steering wheel lower cover to ensure the aesthetics of the steering wheel. When removing the driver's airbag, the disassembly tool is used to follow the disassembly groove and press against one end of the retaining spring, and the driver's airbag pin will be automatically ejected, so that the disassembly is smooth, which can ensure the integrity and aesthetics of the appearance of the steering wheel lower cover. The disassembly tool can be inserted from the gap between the combination switch passport and the steering wheel lower cover, without removing the combination switch cover, and the disassembly is convenient and simple.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety airbag disassembly structure, comprising an airbag module assembly (10) and a steering wheel frame assembly (20), characterized in that: The airbag module assembly (10) comprises a connecting pin (11); The steering wheel frame assembly (20) comprises a frame (22), a lower steering wheel protective cover and a steel wire (21), wherein the steel wire (21) is fixed on the frame (22), and the lower steering wheel protective cover is engaged with the bottom of the frame (22); The connecting pins (11) on the airbag module assembly (10) are respectively deformed by squeezing the steel wires (21) on the steering wheel frame, and the pins (11) are respectively hung on the steel wires (21) on the steering wheel frame, thereby achieving the connection between the airbag module assembly (10) and the steering wheel; A disassembly groove (41) is provided at the bottom of the steering wheel lower protective cover for guiding during disassembly.

2. The airbag disassembly structure according to claim 1, characterized in that: The pins (11), steel wires (21) and disassembly grooves (41) are each provided in three numbers, and the three pins (11) are located at positions 3H, 6H and 9H on the airbag module assembly (10); The three steel wires (21) are located at positions 3H, 6H and 9H on the skeleton (22); The three disassembly grooves (41) are respectively located directly below the three steel wires.

3. The airbag disassembly structure according to claim 1, characterized in that: The bottom of the pin (11) is provided with a slot matching the steel wire (21).

4. The airbag disassembly structure according to claim 2, characterized in that: The air bag module assembly (10) also includes a decorative cover (16), a support plate assembly (12), a guide sleeve (14), and a horn spring (15). The guide sleeve (14) is fixedly mounted on the bottom of the pin (11). The horn spring (15) is mounted on the upper end of the guide sleeve (14). The decorative cover (16) is fixedly connected to the support plate assembly (12). When the decorative cover (16) is pressed downward, the decorative cover (16) can slide downward on the outside of the pin (11) with the support plate assembly (12), so that the horn spring (15) works.

5. The airbag disassembly structure according to claim 4, characterized in that: The decorative cover (16) is fixedly mounted with a bearing plate (2) by means of bolts, and a slot matching the bearing plate (2) is provided on the outer side of the support plate assembly (12).

6. The airbag disassembly structure according to claim 1, characterized in that: A fixing groove is also provided below the pin (11), the fixing groove is located at the upper part of the clamping groove, and a fixing ring matching the fixing groove is provided on the inner side of the guide sleeve (14).

7. The airbag disassembly structure according to claim 2, characterized in that: When the steering wheel assembly is returned to the center position, the connecting lines between 3H, 6H, and 9H are arranged in a positive "T" shape.

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