Air bag component

Abstract

The invention discloses an air bag component which comprises an instrument board body, an air bag frame located on the inner side of the instrument board body, a fabric layer located on the inner side working face of the air bag frame, a hinge part formed at the position, located on the side wall of the air bag frame, of the fabric layer, and the hinge part comprises an inwards-concave structure. The opening direction of the inwards-concave structure is parallel to the plane where the instrument panel body is located, the hinge part is arranged in the side direction, in the process that an air bag impacts the cover plate, a functional area is hidden in the side direction and is not directly subjected to impact force of the air bag, and the hinge is protected; meanwhile, the fabric functional area can better restrain and guide the air bag to be unfolded according to the preset direction and shape on the side face, and the situation that the cover plate deviates, twists and the like in the unfolding process of the air bag is avoided; and the unfolding uniformity of the air bag is improved, and the unfolding uniformity of the air bag is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile interior decoration parts, in particular to an airbag component. Background Art

[0002] Vehicle airbag components are commonly used as interior trims for cars. They are a type of vehicle accessory used to protect the safety of drivers and passengers. They are generally installed on the back of the car dashboard cover and fixed to an independent airbag reinforcement frame or an integral injection-molded airbag frame. The surface, foam layer, plastic cover, and airbag mesh above the airbag position will be locally weakened accordingly. When the vehicle is accidentally collided, the airbag will expand rapidly, break through the weakened area, open the airbag door, and pop out to protect the driver and passengers.

[0003] The invention patent application with publication number CN118082741A and titled Passenger Airbag Device discloses a passenger airbag (PAB) device, which includes a cushion pad and a PAB slot frame. The cushion pad includes a cutting groove recessed at a predetermined depth in the inner surface of the cushion pad. The PAB slot frame includes an airbag door welded to the inner surface in a shape covering the cutting groove. The airbag door has a protrusion protruding from the surface of the airbag door, and the protrusion is arranged in a space forming the cutting groove when the airbag door is welded to the inner surface.

[0004] The vehicle airbag assembly mainly includes an airbag, an airbag door covering the airbag, and an airbag door hinge connecting the airbag door to a load-bearing component. When the airbag assembly is triggered, the airbag door opens to enable the airbag to be ejected, and the airbag door hinge can guide the airbag door when opening.

[0005] In the prior art, due to the way the hinges are set, the cover plate is prone to shattering during explosion, and the hinge structure of the airbag door is unstable, which not only easily causes the fabric of the hinge structure to tear, but also the unfolding shape and angle of the airbag are not ideal when it pops out, and debris is prone to flying out, which does not provide adequate protection for the occupants and even poses a serious safety hazard. Summary of the invention

[0006] The present invention aims at the deficiencies in the prior art and provides an airbag component. The airbag can be released according to a predetermined route and has high safety.

[0007] In order to solve the above technical problems, the present invention is solved through the following technical solutions: an airbag component, including an instrument panel body, an airbag frame is arranged on the inner side of the instrument panel body, a fabric layer is arranged on the inner working surface of the airbag frame, the fabric layer forms a hinge part at the side wall of the airbag frame, and the hinge part includes a concave structure, and the opening direction of the concave structure is parallel to the plane where the instrument panel body is located.

[0008] In the above technical solution, the hinge portion is arranged to correspond to the weakening line position area arranged on the instrument panel body.

[0009] In the above technical solution, the concave structure of the hinge part is formed by partial compression or partial stacking of the fabric layer.

[0010] In the above technical solution, the cross-section of the concave structure is rectangular.

[0011] In the above technical solution, the setting length of the hinge part is equal to the sum of the total thickness a of the instrument panel body, the distance b from the side wall of the airbag frame to the rib, and the initial length c of the fabric functional area.

[0012] In the above technical solution, the cross-section of the concave structure is U-shaped or V-shaped.

[0013] In the above technical solution, the setting length of the hinge part is equal to the sum of the total thickness a of the instrument panel body and the distance b from the side wall of the airbag frame to the pressure rib.

[0014] In the above technical solution, the hinge portion includes a first hinge portion and a second hinge portion which are arranged at two side walls of the airbag frame.

[0015] In the above technical solution, a first weakening line position area is provided in the weakening line position area corresponding to the first hinge part, a second weakening line position area is provided corresponding to the second hinge part, and a third weakening line position area is provided on the instrument panel body between the first weakening line position area and the second weakening line position area.

[0016] Compared with the prior art, the present invention has the following beneficial effects: during the process of the airbag impacting the cover plate, the functional area is hidden on the side and is not directly affected by the impact force of the airbag, thus protecting the hinge; at the same time, the fabric functional area on the side can better restrain and guide the airbag to unfold in a preset direction and shape, thus avoiding the cover plate from being offset, twisted, etc. during the airbag unfolding process; improving the uniformity of the airbag unfolding, helps to improve the uniformity of the airbag unfolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 for Figure 1Schematic diagram of the AA section structure.

[0020] Figure 3 for Figure 2 A partial enlarged view of part B in the middle.

[0021] Figure 4 for Figure 2 A partial enlarged view of part D in the middle.

[0022] Figure 5 It is a schematic diagram of the state after the airbag is deployed. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings.

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be used for other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] See also Figures 1 to 5 An airbag component includes an instrument panel body 1, an airbag frame 2 is arranged on the inner side of the instrument panel body 1, and a fabric layer 3 is arranged on the inner working surface of the airbag frame 2. The fabric layer 3 is usually made of aramid and polyester. The fabric layer 3 is compressed or partially stacked at the side wall of the airbag frame to form a hinge part. That is to say, the structure at the hinge part has a length and strength sufficient to keep the instrument panel body 1 opened and turned along a predetermined direction under the traction of the fabric layer 3 after the airbag door is opened.

[0028] Obviously, the hinge part includes a first hinge part 311 and a second hinge part 312 arranged at two side walls of the airbag frame 2, and adopts a double-opening method, which is more conducive to controlling the stability of the opening and flipping posture of the instrument panel body.

[0029] Of course, the hinge portion includes a concave structure, and the opening direction of the concave structure is parallel to the plane where the instrument panel body 1 is located. Compared with the arrangement in the prior art, such an arrangement can have a lower breaking force requirement.

[0030] The cross-section of the concave structure can be rectangular, U-shaped or V-shaped. Of course, it is not limited to the above shapes and can be adjusted according to actual conditions. When the cross-section is rectangular, the setting length of the hinge part is equal to the sum of the total thickness of the instrument panel body a, the distance b from the side wall of the airbag frame to the compression rib, and the initial length c of the fabric functional area; when the cross-section of the concave structure is U-shaped or V-shaped, the setting length of the hinge part is equal to the sum of the total thickness of the instrument panel body a and the distance b from the side wall of the airbag frame to the compression rib. In this way, the strength and safety of use can be effectively guaranteed.

[0031] Correspondingly, in order to prevent the dashboard from breaking and flying out after the airbag is deployed, the setting of the hinge part corresponds to the weakening line position area set on the dashboard body 1, and the weakening line position area corresponds to the first hinge part 311 and a first weakening line position area 111 is set, corresponding to the second hinge part 312 and a second weakening line position area 112 is set, and a third weakening line position area 113 is set on the dashboard body between the first weakening line position area 111 and the second weakening line position area 112.

[0032] Compared with the traditional hinge part, which needs to meet the requirements of tensile force greater than or equal to 8500N / 5cm and breaking force, and elongation at break less than or equal to 3% before it can be used, the hinge part in this solution only needs to meet the requirements of tensile force greater than or equal to 6000N / 5cm and elongation at break less than or equal to 5%, which effectively expands the application scope of the fabric and helps to reduce production costs.

[0033] By arranging the hinge part laterally and the opening direction of the concave structure being parallel to the plane where the instrument panel body is located, and cooperating with the weakening line position area, it can be ensured that after the instrument panel body is bounced open by the airbag, the hinge part can be pulled out along the weakening line area, and the instrument panel body can be opened and flipped along a predetermined direction, thereby avoiding safety problems caused by the cover panel breaking and flying out.

[0034] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. An airbag component, comprising an instrument panel body (1), characterized in that: An airbag frame (2) is arranged on the inner side of an instrument panel body (1), and a fabric layer (3) is arranged on the inner working surface of the airbag frame (2). The fabric layer (3) forms a hinge portion at a side wall of the airbag frame, and the hinge portion includes a concave structure, wherein the opening direction of the concave structure is parallel to the plane where the instrument panel body (1) is located.

2. The airbag component according to claim 1, characterized in that The hinge portion is arranged to correspond to a weakening line position area arranged on the instrument panel body (1).

3. The airbag component according to claim 1, characterized in that: The concave structure of the hinge portion is formed by local compression or local stacking of the fabric layer (3).

4. The airbag component according to claim 3, characterized in that: The cross section of the concave structure is rectangular.

5. The airbag component according to claim 4, characterized in that: The setting length of the hinge part is equal to the sum of the total thickness a of the instrument panel body, the distance b from the side wall of the airbag frame to the rib, and the initial length c of the fabric functional area.

6. The airbag component according to claim 3, characterized in that: The cross section of the concave structure is U-shaped or V-shaped.

7. The airbag component according to claim 6, characterized in that: The setting length of the hinge part is equal to the sum of the total thickness a of the instrument panel body and the distance b from the side wall of the airbag frame to the pressure rib.

8. The airbag component according to claim 2, characterized in that: The hinge portion comprises a first hinge portion (311) and a second hinge portion (312) which are arranged at two side walls of the airbag frame (2).

9. The airbag component according to claim 2, characterized in that: The weakening line position area is provided with a first weakening line position zone (111) corresponding to the first hinge part (311), a second weakening line position zone (112) is provided corresponding to the second hinge part (312), and a third weakening line position zone (113) is provided on the instrument panel body between the first weakening line position zone (111) and the second weakening line position zone (112).

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