Air bag frame structure convenient to disassemble and assemble

Abstract

The air bag frame structure convenient to disassemble and assemble comprises a frame body and an air bag cover plate, hook holes are formed in the bottoms of a pair of side plates of the frame body, the lower ends of the side plates provided with the hook holes are vertically turned over outwards to form a skirt edge extending in the horizontal direction, and the air bag cover plate is arranged on the skirt edge. All the hook holes in at least one side plate provided with the hook holes penetrate through the side plate downwards to form the bottom notch through which the hook of the air bag shell can enter and exit conveniently, then the plugging block is arranged to plug the bottom notch, when the air bag shell is disassembled and assembled, the hook can enter and exit from the lower portion conveniently through the bottom notch only by separating the plugging block from the bottom notch, disassembling and assembling are convenient, and the cost is low. When the hooks go in and out, the side plates with the hook holes do not need to deform and avoid, the side plates can be made of cheaper hard plastic, the cost is lower, the possibility is provided for subsequent integration, the side plates without the hook holes do not need to be provided with weakening structures, and the overall strength of the air bag frame can be greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of safety airbags, and in particular relates to an airbag frame structure which is convenient for assembly and disassembly. Background Art

[0002] As people pay more attention to riding safety, airbags have gradually become standard accessories on cars. Common airbags are hook-type airbags, such as Chinese patents CN202641599U and CN203255129U, which disclose such airbags. Figures 1 to 3 As shown, the airbag housing 1 of this type of safety airbag is hooked into the hook hole 12 on the airbag frame 3 through the hook 2 set on the side wall to fix the airbag 4 and withstand the reaction force when the airbag 4 explodes and deploys. In order to facilitate the hook 2 to hook in and ensure the effect of hooking into the hook hole 12, the opening width of the hook hole 12 in the vertical direction needs to be greater than the height of the hook 2 in the vertical direction. At the same time, the farthest distance between the hooks 2 on both sides of the airbag housing 1 needs to be greater than the opening size of the bottom of the airbag frame 3. When squeezing in from bottom to top, the side plate of the airbag frame 3 with the hook hole 12 needs to produce a relatively large deformation to avoid it. Therefore, the airbag frame 3 is usually made of TPO material with good elasticity. At the same time, the side plate of the hook hole 12 of the airbag frame 3 adjacent to the side needs to be weakened. Structure - A deep opening 5 is opened at the bottom of the side panel so that the side panel where the hook hole 12 is located can be opened. The degree of weakening of the weakened structure needs to be precisely controlled. If the degree of weakening is too strong, the overall strength of the airbag frame 3 will be greatly reduced. When the airbag 4 explodes and deploys, the airbag 4 may easily fall out due to the transitional deformation of the airbag frame 3. In severe cases, the airbag frame 3 may break, causing the airbag 4 to fail. If the degree of weakening is too weak, the side panel where the hook hole 2 is located will be difficult to open, and the airbag housing 1 will be difficult to squeeze in. During the production and assembly and after-sales replacement of the airbag, it is difficult to disassemble and assemble, and it is impossible to disassemble and assemble from the bottom. It is often necessary to remove the airbag frame together with the airbag and the dashboard from the car before the airbag can be disassembled and assembled, which is inconvenient to operate.

[0003] Furthermore, although TPO material has good elasticity, the connection between the airbag cover 20 and the side panel of the airbag frame 3 still needs to be provided with an S-shaped or U-shaped bend 6 to realize the hinge function. Such a structural design results in that the surface of the connection between the airbag cover 20 and the airbag frame 3 is not flat, and it is difficult to achieve integration with the upper dashboard; at the same time, this type of material is also difficult to achieve integration with the hard plastic (commonly used PP+GF material) used to make the dashboard frame, so that the airbag frame 3 and the dashboard frame can only be connected by welding, which is costly and has a high risk of failure. Utility Model Content

[0004] The purpose of the utility model is to overcome one or more disadvantages in the prior art and to provide an air bag frame structure that is easy to assemble and disassemble.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is an airbag frame structure that is easy to disassemble and assemble, including:

[0006] A frame body, wherein the frame body is surrounded by four side panels, and a pair of the side panels have hook holes at the bottom;

[0007] An airbag cover plate, the airbag cover plate being connected to the top of the frame body;

[0008] The lower end of the side panel with the hook hole is folded vertically outward to form a skirt extending in the horizontal direction. All the hook holes on at least one side panel with the hook hole penetrate downward through the bottom surface of the side panel to form a bottom notch that is convenient for the hook of the airbag housing to enter and exit. The bottom notch extends outward to the skirt. The extension length of the bottom notch on the skirt is not less than the length of the hook protruding from the side panel after the hook hooks the hook hole. The airbag frame structure also includes a blocking block for blocking the bottom notch.

[0009] Preferably, the blocking block and the skirt are separately provided, and the blocking block is snap-connected to the skirt.

[0010] Further preferably, the blocking block abuts against at least the upper surface of the skirt and two side walls in the extending direction.

[0011] Further preferably, the blocking block has an insertion section extending upward, and when the blocking block blocks the bottom notch, the insertion section is inserted into the hook to prevent the hook from moving downward and outward.

[0012] Preferably, the blocking block is integrally provided with the skirt, and the blocking block is rotatably connected to the skirt.

[0013] Preferably, when the blocking block rotates to the position blocking the bottom notch, the bottom of the blocking block presses against the upper surface of the skirt, and a portion of the blocking block extends into the hook to form an insertion section, preventing the hook from moving downward and outward and preventing the blocking block from rotating in the opposite direction.

[0014] Preferably, each side panel formed with the bottom notch corresponds to one blocking block, and the blocking block blocks all the bottom notches on the side panel; or, each side panel formed with the bottom notch corresponds to multiple blocking blocks, and each blocking block blocks one or more bottom notches on the side panel.

[0015] Preferably, the frame body and the airbag cover are made of hard plastic.

[0016] Further preferably, the frame body, the airbag cover, the instrument panel and / or the instrument panel frame are integrally injection molded.

[0017] Preferably, the outer side wall of the side panel having the hook hole is connected with a vertical reinforcing rib extending in the up-down direction, the upper and lower ends of the vertical reinforcing rib are respectively connected to the outer extension section of the airbag cover and the skirt, and at least one vertical reinforcing rib is provided between adjacent bottom notches.

[0018] Further preferably, the blocking block is provided with a clamping portion matching the vertical reinforcing rib, and when the blocking block blocks the bottom notch, the clamping portion is clamped on the vertical reinforcing rib.

[0019] Preferably, a fiber fabric serving as a hinge is connected to the lower surface of the airbag cover and the inner wall surface of the frame body, and the fiber fabric is integrated with the airbag cover and the frame body by insert injection molding.

[0020] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0021] The utility model provides an airbag frame structure which is easy to assemble and disassemble, comprising a frame body and an airbag cover plate. A pair of side plates of the frame body are provided with hook holes at the bottom. By folding the lower ends of the side plates with the hook holes outward vertically, a skirt extending in the horizontal direction is formed, so that all the hook holes on at least one side plate with the hook holes penetrate downward through the side plate to form a bottom notch which is convenient for the hook of the airbag shell to enter and exit. A blocking block is then provided to block the bottom notch. When the airbag shell is disassembled and assembled, it is only necessary to separate the blocking block from the bottom notch, so that the hook can be conveniently entered and exited from below by utilizing the bottom notch. The disassembly and assembly is convenient, and when the hook enters and exits, the side plate with the hook hole does not need to be deformed to avoid it, and can be made of cheaper hard plastic, which has lower cost and provides the possibility for subsequent integration. The side plate without the hook hole does not need to be provided with a weakening structure, and the material properties of the hard plastic can be combined to greatly improve the overall strength of the airbag frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a left view schematic diagram of an airbag frame in the prior art.

[0023] Figure 2 yes Figure 1 The schematic transverse cross-sectional view shows the state of the airbag and the airbag housing after assembly for easy observation.

[0024] Figure 3 It is a three-dimensional schematic diagram of the first embodiment of the utility model, showing the instrument panel for easy observation.

[0025] Figures 4 to 6 yes Figure 3 The transverse cross-sectional view shows the process of assembling the airbag and the airbag housing, wherein: Figure 4The hook on one side of the airbag housing has hooked the hook hole, and the hook on the other side rotates upward and passes through the bottom notch. Figure 5 The airbag housing is rotated into place and the blocking block blocks the bottom gap. Figure 6 The airbag housing is pulled downward into place, with the hooks on both sides hooked into the hook holes.

[0026] Figure 7 It is a transverse cross-sectional view of the second embodiment of the present utility model.

[0027] Among them: 1. airbag housing; 2. hook; 3. airbag frame; 4. airbag; 5. opening; 6. bend; 7. instrument panel; 10. frame body; 11. side panel; 12. hook hole; 13. skirt; 14. bottom notch; 15. vertical reinforcing ribs; 16. horizontal reinforcing ribs; 20. airbag cover; 21. outer extension section; 30. blocking block; 31. blocking unit; 32. insertion section; 33. barb; 34. clamping part; 40. fiber fabric. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0029] Embodiment 1

[0030] like Figures 3 to 6 As shown, the utility model provides an airbag frame structure that is easy to disassemble and assemble, comprising: a frame body 10, an airbag cover plate 20 and a blocking block 30, wherein the frame body 10 is surrounded by four side panels 11, wherein the bottom of the side panels 11 on the left and right sides are provided with hook holes 12, and the lower ends of the side panels 11 provided with the hook holes 12 are vertically folded outward to form a skirt 13 extending in the horizontal direction, and all the hook holes 12 on the side panel 11 on the right side with the hook holes 12 penetrate downwardly through the bottom surface of the side panel 11 to form a bottom notch 14 that is convenient for the hook 2 of the airbag housing 1 to enter and exit, and the bottom notch 14 extends outward to the skirt 13, and the extension length of the bottom notch 14 on the skirt 13 is not less than the length of the hook 2 protruding from the side panel 11 after hooking the hook hole 12; the airbag cover plate 20 is connected to the top of the frame body 10, so as to shield the airbag 4 and the airbag housing 1 in the frame body 10, and facilitate the setting of the instrument panel 7; the blocking block 30 is used to block the bottom notch 14.

[0031] The advantages of this setting are:

[0032] 1. When disassembling the airbag housing, you only need to separate the blocking block from the bottom notch, and then use the bottom notch to conveniently allow the hook to move in and out from below, making disassembly and assembly easy.

[0033] 2. When the hook goes in and out, the side panel with the hook hole does not need to be deformed to avoid deformation, and can be made of cheaper hard plastic, which is lower in cost and also provides the possibility for subsequent integration.

[0034] 3. The side panels without hook holes do not need to be provided with a weakening structure, and the overall strength of the airbag frame can be greatly improved by combining the material properties of hard plastic.

[0035] In this embodiment, the blocking block 30 is a piece, and the blocking block 30 is used to block all the bottom notches 14 on the right side panel 11. Specifically, the blocking block 30 is provided with a plurality of blocking units 31, each blocking unit 31 corresponds to a bottom notch 14, and the blocking block 30 is separately provided with the skirt 13, and the blocking block 30 is detachably connected to the skirt 13 by snapping. When the bottom notch 14 needs to be exposed, the blocking block 30 can be pulled out. After snapping, the blocking block 30 abuts against the upper surface of the skirt 13 and the left and right side walls of the skirt 13 to withstand the airbag 4. When the explosion unfolds, the downward and outward reverse forces are applied by the airbag shell 1. In order to withstand the above reverse forces, the blocking block 30 has an upwardly extending insertion section 32. When blocking the bottom notch 14, the insertion section 32 is upwardly inserted into the hook 2 on the right side of the airbag shell 1 to prevent the hook 2 from moving downward and outward. In order to improve the firmness of the snap-in, the portion of the blocking block 30 located on the right side wall of the skirt 13 further extends downward and leftward to form a barb 33, which hooks the lower surface of the skirt 13 to ensure a firm snap-in.

[0036] In order to further enhance the strength of the airbag frame structure, in the present embodiment, the outer side wall of the right side panel 11 (the side panel with the hook hole 12) is connected with a reinforcing rib, and the reinforcing rib includes crisscrossed vertical reinforcing ribs 15 and horizontal reinforcing ribs 16, the vertical reinforcing ribs 15 extend in the up-down direction, and the upper and lower ends of the vertical reinforcing ribs 15 are respectively connected to the outer extension section 21 of the airbag cover 20 and the skirt 13, the outer side surface of the vertical reinforcing rib 15 is flush with the right side surface of the skirt 13, and there are multiple vertical reinforcing ribs 15 and they are arranged at intervals, and adjacent bottom notches At least one vertical reinforcing rib 15 is provided between the side plates 11 and the bottom notch 14; to facilitate the clamping of the blocking block 30, the blocking block 30 is further provided with a clamping portion 34 matching the vertical reinforcing rib 15, and the clamping portion 34 is a U-shaped groove opened on the blocking block 30. The matching means that the groove width of the U-shaped groove is equal to the wall thickness of the vertical reinforcing rib 15, and the groove depth of the U-shaped groove is equal to the length of the vertical reinforcing rib 15 protruding to the right from the side plate 11. When the blocking block 30 blocks the bottom notch 14, the clamping portion 33 is clamped on the vertical reinforcing rib 15 to achieve positioning in the front and rear directions.

[0037] In order to improve the integration of the airbag frame structure, in the present embodiment, the frame body 10 and the airbag cover 20 are made of hard plastic of the same material as the instrument panel 7 and the instrument panel frame (not shown in the figure). Furthermore, the frame body 10, the airbag cover 20, the instrument panel 7 and the instrument panel frame are integrally injection molded. For the convenience of integration, the lower surface of the airbag cover 20 and the inner wall surface of the frame body 10 are connected with a fiber fabric 40 which acts as a hinge. The fiber fabric 40 is integrated with the airbag cover 20 and the frame body 10 by means of insert injection molding, so as to eliminate the upward protruding S-shaped or U-shaped bend at the connection between the airbag cover 20 and the frame body 10, thereby improving the flatness of the instrument panel 7.

[0038] Embodiment 2

[0039] like Figure 7 As shown, the second embodiment is basically the same as the first embodiment, except that, in the second embodiment, the blocking block 30 is integrally formed with the skirt 13, and the blocking block 30 is rotatably connected to the skirt 13. When the blocking block 30 is rotated to a position to block the bottom notch 14, the bottom of the blocking block 30 is pressed against the upper surface of the skirt 13, and a part of the blocking block 30 extends into the hook 2 of the airbag housing 1 to form an insertion section 32, which prevents the hook 2 from moving downward and outward and prevents the blocking block 30 from rotating in the opposite direction.

[0040] Embodiment 3

[0041] Embodiment 3 is basically the same as Embodiment 1, except that, in Embodiment 3, each side panel 11 having a bottom notch 14 corresponds to a plurality of blocking blocks 30 , and each blocking block 30 is provided with a blocking unit 31 to block a bottom notch 14 on the side panel 11 .

[0042] Embodiment 4

[0043] The fourth embodiment is basically the same as the first embodiment, except that, in the fourth embodiment, all the hook holes 12 on a pair of side panels 11 with hook holes 12 penetrate downward to form a bottom notch 14 , and there are two blocking blocks 30 corresponding to the two side panels 11 .

[0044] Embodiment 5

[0045] Embodiment 5 is basically the same as Embodiment 1, except that, in Embodiment 5, the frame body 10 and the airbag cover 20 are made of a hard plastic different from the instrument panel 7 and the instrument panel frame, or the frame body 10 and the airbag cover 20 are not integrally injection molded with the instrument panel 7 and the instrument panel frame, but are still connected by welding to adapt to existing production processes.

[0046] Embodiment 6

[0047] The sixth embodiment is substantially the same as the first embodiment, except that, in the sixth embodiment, the blocking block 30 and the skirt 13 are connected by screws or rivets, or by a combination of two or more connection methods.

[0048] The airbag frame structure provided by the utility model does not require the side panels of the airbag frame to be deformed during the process of hooking the hooks on the airbag shell. Therefore, there is no need to use elastic TPO material to make the airbag frame, and ordinary hard plastic can be used to make it, thereby reducing the cost of raw materials. In addition, the airbag frame can also be integrally injection molded with the instrument panel and / or the instrument panel frame, which has a better integration. The integral injection molding method can also save the welding steps between the airbag frame and the instrument panel and the instrument panel frame, thereby reducing the processing cost and avoiding the potential failure risk caused by poor welding.

[0049] That is to say, the airbag frame structure provided by the utility model not only solves the problem of difficulty in disassembling the airbag shell and the airbag frame of the hook-type safety airbag, and the problem of insufficient strength of the airbag frame, but also solves the problem that the airbag frame is difficult to integrate with the instrument panel and the instrument panel frame, and is suitable for popularization and use.

[0050] The utility model also provides a method for assembling a hook-type safety airbag, which is used to install the airbag on the airbag frame described in the first embodiment. The assembly method comprises the following steps:

[0051] A. Remove the blocking block 30 on the airbag frame to separate it from the bottom notch 14, so that all the bottom notches 14 are exposed;

[0052] B. Move the airbag housing 1 to the bottom of the airbag frame;

[0053] C. Insert the left side of the airbag housing 1 upwards at an angle, so that the hook 2 on the airbag housing 1 on this side is hooked into the hook hole 12 on the left side plate 11, and then rotate with the contact line between the hook 2 and the hook hole 12 as the axis, so that the hook 2 on the right side of the airbag housing 1 rotates upwards, passes through the bottom notch 14, enters the hook hole 12 corresponding to the bottom notch 14, and presses against the top wall of the hook hole 12;

[0054] D. Install the blocking block 30 so that the blocking block 30 blocks all the bottom gaps 14;

[0055] E. Release and pull the airbag housing 1 downwards so that the hook 2 hooks the hook hole 12, completing the assembly of the hook-type safety airbag.

[0056] The utility model also provides a method for assembling a hook-type safety airbag, which is used to install the airbag on the airbag frame described in the fourth embodiment. The assembly method comprises the following steps:

[0057] A. Remove the blocking block 30 on the airbag frame to separate it from the bottom notch 14, so that all the bottom notches 14 are exposed;

[0058] B. Move the airbag housing 1 to the bottom of the airbag frame;

[0059] C. Push the airbag housing 1 upward directly, so that all the hooks 2 on both sides of the airbag housing 1 are pressed against the top wall of the hook hole 12;

[0060] D. Install the blocking block 30 so that the blocking block 30 blocks all the bottom gaps 14;

[0061] E. Release and pull the airbag housing 1 downwards so that the hook 2 hooks the hook hole 12, completing the assembly of the hook-type safety airbag.

[0062] The assembly method of the hook type safety airbag provided by the utility model is simple to operate and easy to implement.

[0063] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An airbag frame structure that is easy to assemble and disassemble, comprising: A frame body, wherein the frame body is surrounded by four side panels, and a pair of the side panels have hook holes at the bottom; An airbag cover plate, the airbag cover plate being connected to the top of the frame body; Features: The lower end of the side panel with the hook hole is folded vertically outward to form a skirt extending in the horizontal direction. All the hook holes on at least one side panel with the hook hole penetrate downward through the bottom surface of the side panel to form a bottom notch that is convenient for the hook of the airbag housing to enter and exit. The bottom notch extends outward to the skirt. The extension length of the bottom notch on the skirt is not less than the length of the hook protruding from the side panel after the hook hooks the hook hole. The airbag frame structure also includes a blocking block for blocking the bottom notch.

2. The airbag frame structure that is easy to assemble and disassemble according to claim 1 is characterized in that: The blocking block is separately arranged from the skirt, and the blocking block is snap-connected to the skirt.

3. The airbag frame structure that is easy to assemble and disassemble according to claim 2 is characterized in that: The blocking block at least abuts against the upper surface of the skirt and two side walls in the extending direction.

4. The airbag frame structure that is easy to assemble and disassemble according to claim 2 is characterized in that: The blocking block has an insertion section extending upwards. When the blocking block blocks the bottom notch, the insertion section is inserted into the hook to prevent the hook from moving downwards and outwards.

5. The airbag frame structure that is easy to assemble and disassemble according to claim 1 is characterized in that: The blocking block is integrally arranged with the skirt, and the blocking block is rotatably connected to the skirt.

6. The airbag frame structure that is easy to assemble and disassemble according to claim 1 is characterized in that: When the blocking block rotates to the position where it blocks the bottom notch, the bottom of the blocking block presses against the upper surface of the skirt, and a portion of the blocking block extends into the hook to form an insertion section, preventing the hook from moving downward and outward and preventing the blocking block from rotating in the opposite direction.

7. The airbag frame structure that is easy to assemble and disassemble according to claim 1 is characterized in that: Each side panel formed with the bottom notch corresponds to one blocking block, and the blocking block blocks all the bottom notches on the side panel; or, each side panel formed with the bottom notch corresponds to multiple blocking blocks, and each blocking block blocks one or more bottom notches on the side panel.

8. The airbag frame structure that is easy to assemble and disassemble according to claim 1 is characterized in that: The frame body and the airbag cover are made of hard plastic.

9. The airbag frame structure that is easy to assemble and disassemble according to claim 8, characterized in that: The frame body, the airbag cover plate and the instrument panel and / or the instrument panel frame are integrally injection-molded.

10. The airbag frame structure that is easy to assemble and disassemble according to claim 1, characterized in that: The outer side wall of the side panel with the hook hole is connected with a vertical reinforcing rib extending in the up-down direction, the upper and lower ends of the vertical reinforcing rib are respectively connected to the outer extension section of the airbag cover and the skirt, and at least one vertical reinforcing rib is provided between adjacent bottom notches.

11. The airbag frame structure that is easy to assemble and disassemble according to claim 10, characterized in that: The blocking block is provided with a clamping portion matching the vertical reinforcing rib. When the blocking block blocks the bottom notch, the clamping portion is clamped on the vertical reinforcing rib.

12. The airbag frame structure that is easy to assemble and disassemble according to claim 1, characterized in that: The lower surface of the airbag cover and the inner wall surface of the frame body are connected with a fiber fabric that acts as a hinge. The fiber fabric is integrated with the airbag cover and the frame body by insert injection molding.

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