A mounting plate for side airbags on the backrests of three rear seats in a car.
By using high-strength steel plates and reinforcing components on the airbag mounting plate on the backrest of the car's rear seat to form a three-dimensional support network, the problem of airbag deployment direction deviation caused by easy deformation of traditional mounting plates is solved, thus achieving accurate airbag deployment and improving structural strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG ZHONGRUI MACHINERY CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-30
Smart Images
Figure CN224427349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of installing side airbags on the backrests of three rear seats in automobiles, and in particular to a mounting plate for fixing side airbags on the backrests of three rear seats in automobiles. Background Technology
[0002] With the development of the automotive industry and the increasing safety awareness of consumers, the configuration requirements for automotive passive safety systems are becoming increasingly stringent. In the field of rear seat safety, side airbags, as key components for reducing side collision injuries, have their installation and fixing structure reliability directly affecting their protective effect.
[0003] Traditional mounting plates often use ordinary steel plates or a single structural design. When the airbag deploys, the instantaneous reaction force can reach hundreds of Newtons, which can easily cause deformation and lead to deviation in the airbag deployment direction. To address this issue, a mounting plate for the side airbag installation on the backrest of a three-seater rear seat in a car is proposed. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a mounting plate for the side airbag on the backrest of a three-seater rear seat in a car, which aims to improve the problem in the prior art that "traditional mounting plates mostly use ordinary steel plates or a single structure, which are prone to deformation, causing the airbag deployment direction to deviate".
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mounting and fixing plate for the side airbag of the backrest of a three-seater rear seat of a car, comprising plate a and plate b, wherein a mounting platform is provided at the lower part of both plate a and plate b, and two sets of mounting holes a and two sets of mounting holes b are respectively provided through the rear side of the mounting platforms on plate a and plate b, and a reinforcing component is provided on the right side of plate a;
[0006] The reinforcement component includes a reinforcement plate welded to the outside of plate a. A connecting strip is fixedly connected to the lower bend of the reinforcement plate. A reinforcing rib is fixedly connected to the upper right side of the reinforcement plate. An annular auxiliary rib is fixedly connected to the outside of the reinforcing rib. A through hole is opened on the reinforcement plate near the mounting hole a.
[0007] As a further description of the above technical solution:
[0008] The reinforcement components are provided in two sets, with the other set of reinforcement components located on the left side of plate b.
[0009] As a further description of the above technical solution:
[0010] The distance between the two sets of mounting holes b on plate b is greater than the distance between the two sets of mounting holes a on plate a.
[0011] As a further description of the above technical solution:
[0012] The plates a and b are L-shaped, and the plate a has a second bend angle near the right side of the mounting platform.
[0013] As a further description of the above technical solution:
[0014] The plate a has a first bending angle located near the upper part of the second bending angle.
[0015] As a further description of the above technical solution:
[0016] The width of the bend in the connecting strip is greater than the width at both ends.
[0017] As a further description of the above technical solution:
[0018] The reinforcing ribs are arranged in a cross shape.
[0019] As a further description of the above technical solution:
[0020] The annular auxiliary reinforcement is located at the cross-shaped position of the reinforcing reinforcement, and the annular auxiliary reinforcement is fixedly connected to the outside of the reinforcing plate.
[0021] This utility model has the following beneficial effects:
[0022] 1. In this utility model, by setting reinforcement components on the right side of plate a and the left side of plate b, a three-dimensional support network is formed. The combination of cross-shaped reinforcing ribs and ring-shaped auxiliary ribs can disperse the impact force during explosion to the entire plate, reducing local stress concentration. The width of the connecting strip at the bend is greater than that at both ends, which increases the structural strength of the connecting strip, thereby enhancing the strength of the main body of the plate and reducing the deviation of the airbag deployment direction.
[0023] 2. In this utility model, the distance between the two sets of mounting holes b on plate b is greater than the distance between the mounting holes a on plate a, forming a physical error prevention mechanism, which avoids the airbag deployment direction from shifting due to assembly errors and improves the accuracy of installation. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of plate a and plate b in this utility model;
[0025] Figure 2 This is a bottom-view three-dimensional structural diagram of plate a and plate b in this utility model;
[0026] Figure 3 This is a three-dimensional structural diagram of the disassembled reinforcing component in this utility model;
[0027] Figure 4 This is a three-dimensional structural diagram of plate a in this utility model.
[0028] Legend:
[0029] 1. Plate a; 2. Plate b; 3. Mounting hole a; 4. Mounting hole b; 5. Reinforcing component; 51. Reinforcing plate; 52. Connecting strip; 53. Through hole; 54. Reinforcing rib; 55. Circular auxiliary rib; 6. First bending angle; 7. Second bending angle; 8. Mounting platform. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of an airbag mounting plate for the backrest of a three-seater rear seat in a car, comprising plate a1 and plate b2. Plates a1 and b2 are used to mount the airbag, and the surfaces in contact with the airbag are smooth. Both plates are made of high-strength steel plate S420MCT2.0. Each plate a1 and plate b2 has a mounting platform 8 at its lower part, providing a standardized mounting interface for fixing the airbag body. The platform surface is smooth and burr-free to avoid scratching the airbag surface. Plates a1 and b2 are L-shaped. A second bending angle 7 is provided on the right side of the mounting platform 8 near the plate a1. A first bending angle 6 is provided on the upper part of the plate a1 near the second bending angle 7. The second bending angle 7 and the first bending angle 6 are formed by bending the plate a1, so that the plate a1 and the plate b2 form an L shape. Two sets of mounting holes a3 and two sets of mounting holes b4 are respectively opened through the rear side of the mounting platform 8 on the plate a1 and the plate b2. They are connected to the seat frame by bolts to ensure the rigid connection between the plate a1 and the plate b2 and the seat. A reinforcing component 5 is provided on the right side of the plate a1.
[0032] Reference Figures 1-3The reinforcement component 5 includes a reinforcement plate 51 welded to the outside of plate a1, made of the same high-strength steel as the main body, forming an additional rigid support surface. A connecting strip 52 is fixedly connected to the lower bend of the reinforcement plate 51. The width of the connecting strip 52 at the bend is greater than the width at both ends, reinforcing the bends of plates a1, b2 and the reinforcement plate 51 to form a "thickened node", reducing stress concentration at the connection and preventing breakage at the connection during explosion. A reinforcing rib 54 is fixedly connected to the upper right side of the reinforcement plate 51, extending along the horizontal and vertical directions of the airbag explosion reaction force, dispersing the impact force to the entire plate. The reinforcing ribs 54 are staggered in a cross shape. The cross-shaped structure can reduce stress concentration by 25%. CAE simulation verification shows that it can withstand an explosion pressure of 0.8MPa without plastic deformation, reducing the deviation of the airbag deployment direction. A ring auxiliary rib 55 is fixedly connected to the outside of the reinforcing rib 54.
[0033] Reference Figure 2 and Figure 3 The annular auxiliary rib 55 is set at the cross-shaped position of the reinforcing rib 54, and the annular auxiliary rib 55 is fixedly connected to the outside of the reinforcing plate 51 to form a closed support ring, further strengthening the rigidity of the core stress area. The reinforcing plate 51 has a through hole 53 near the mounting hole a3. Two sets of reinforcing components 5 are provided. The other set of reinforcing components 5 is set on the left side of the plate b2. The distance between the two sets of mounting holes b4 on the plate b2 is greater than the distance between the two sets of mounting holes a3 on the plate a1, forming a physical error prevention mechanism: if the left and right parts are installed incorrectly, the bolts cannot be aligned with the holes of the seat frame, avoiding the airbag deployment direction deviation due to assembly errors.
[0034] Working principle: When the vehicle is involved in a side collision, the side airbag is triggered and inflated. The expansion of the airbag generates a reaction force on the plate a1 and plate b2. The reaction force is transmitted from the plate a1 and plate b2 to the reinforcing plate 51 through the mounting platform 8. The horizontal force is dispersed by the cross-shaped reinforcing ribs 54 of the reinforcing component 5 to avoid local stress concentration. The vertical force is transmitted to the mounting platform through the second bending angle 7 and the first bending angle 6 of the plate a1 and plate b2, and then dispersed to the frame by the bolts.
[0035] The reinforcing plate 51 is welded to the outside of the plate and forms a "rigid triangular support" with the connecting strip 52 to enhance the edge strength of the plate; the cross-shaped reinforcing rib 54 and the annular auxiliary rib 55 form a three-dimensional support network, which distributes the concentrated force to the entire plate area, reduces the amount of deformation of the plate, and reduces the deviation of the airbag deployment direction.
[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A mounting plate for the side airbag on the backrest of a three-seater rear seat in a car, comprising plate a (1) and plate b (2), characterized in that: The lower part of both plate a (1) and plate b (2) is provided with an installation platform (8). The rear side of the installation platform (8) on plate a (1) and plate b (2) is provided with two sets of installation holes a (3) and two sets of installation holes b (4). The right side of plate a (1) is provided with a reinforcement component (5). The reinforcing component (5) includes a reinforcing plate (51) welded to the outside of plate a (1). A connecting strip (52) is fixedly connected to the lower bend of the reinforcing plate (51). A reinforcing rib (54) is fixedly connected to the upper right side of the reinforcing plate (51). An annular auxiliary rib (55) is fixedly connected to the outside of the reinforcing rib (54). A through hole (53) is opened on the reinforcing plate (51) near the mounting hole a (3).
2. The mounting plate for the side airbag on the backrest of a three-seater rear seat in a car according to claim 1, characterized in that: The reinforcement component (5) is provided in two sets, with the other set of reinforcement component (5) provided on the left side of plate b (2).
3. The mounting plate for the side airbag on the backrest of a three-seater rear seat in a car according to claim 1, characterized in that: The distance between the two sets of mounting holes b(4) on the plate b(2) is greater than the distance between the two sets of mounting holes a(3) on the plate a(1).
4. The mounting plate for the side airbag on the backrest of a three-seater rear seat in a car according to claim 1, characterized in that: The plate a (1) and plate b (2) are set in an L shape, and the plate a (1) is provided with a second bending angle (7) on the right side near the mounting platform (8).
5. The mounting plate for the side airbag on the backrest of a three-seater rear seat in a car according to claim 1, characterized in that: The plate a (1) has a first bend angle (6) located on its upper part near the second bend angle (7).
6. The side airbag mounting plate for the backrest of a three-seater rear seat in a car according to claim 1, characterized in that: The width of the bend in the connecting strip (52) is greater than the width at both ends.
7. A mounting plate for the side airbag on the backrest of a three-seater rear seat in a car, as described in claim 1, is characterized in that: The reinforcing ribs (54) are staggered in a cross shape.
8. A mounting plate for the side airbag on the backrest of a three-seater rear seat in a car, as described in claim 1, is characterized in that: The annular auxiliary rib (55) is located at the cross-shaped position of the reinforcing rib (54), and the annular auxiliary rib (55) is fixedly connected to the outside of the reinforcing plate (51).