A novel automobile seat bracket and its preparation process

Abstract

The present invention discloses a novel automobile seat bracket, which comprises an automobile seat slide rail. A pair of outer front brackets and a pair of rear floor brackets are fixedly arranged on the automobile seat slide rail. A seat bracket main body part is connected to both the pair of outer front brackets and the pair of rear floor brackets at the same time. A discontinuous structure for reducing the impact on the vehicle occupants during a vehicle collision is provided at the connection between the outer front brackets and / or the rear floor brackets and the seat bracket main body part. The present invention also discloses a preparation process for the automobile seat bracket, which comprises the following technological steps carried out in sequence: continuously stamping a steel plate to form the seat bracket main body, the outer front brackets and the rear floor brackets, and connecting the seat bracket main body, the outer front brackets, the rear floor brackets and the automobile seat slide rail into an automobile seat bracket through connecting pieces. By setting the discontinuous structure, the present invention can greatly reduce the impact on the vehicle occupants during a collision and reduce the risk of the occupants hitting the inner wall of the vehicle body.

Description

Technical Field

[0001] The present invention relates to a new type of automobile seat bracket and its manufacturing process. Background Art

[0002] The automobile body structure is composed of some thin plate components combined by certain connecting devices. The number of these thin plate components accounts for about 70% - 80% of the total number of vehicle parts, and the vast majority of them have different degrees of manufacturing difficulty. The main load-bearing structure of the automobile is the body frame, which is approximately one-third of the total curb weight of the automobile. The weight of the frame and structure of the automobile directly affects vehicle performance and service life, such as power performance, fuel economy, etc. With the progress of technology and the development of automobile technology, people generally prefer automobiles with low emission pollution, good safety, and wide applications. To achieve this goal, it is necessary to meet the requirements of stiffness and strength in the body and minimize the vehicle mass as much as possible. In addition, regarding how to reduce the acceleration of passengers in the vehicle when the automobile encounters a collision, currently, mainly by strengthening the automobile seat bracket and seat belt, etc., the impact on the vehicle occupants during a collision is still very large. The patent with the publication number CN109760563A: An automobile seat bracket structure with collision energy absorption characteristics, including a seat cushion, a height adjustment device, and a mounting base. The height adjustment device is provided with a height adjustment driving component and two sets of link components; the height adjustment driving component can adjust and lock the rotation angle between the rear link of one set of the link components and the rear bracket; its characteristics lie in that: a grid-shaped energy absorption structure is provided on the rear bracket of the other set of the link components. It mitigates and absorbs the impact during a collision by setting an energy absorption structure on the automobile seat bracket, but the impact on the vehicle occupants is still very large, and there is still a risk of the occupants colliding with the inner wall of the vehicle body. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects existing in the prior art and provide a new type of automobile seat bracket. By setting a break structure, the impact on the vehicle occupants during a collision can be greatly reduced, and the risk of the occupants colliding with the inner wall of the vehicle body can be minimized.

[0004] To achieve the above purpose, the technical solution of the present invention is to design a new type of automobile seat bracket, including an automobile seat slide rail, a pair of outer front brackets and a pair of rear floor brackets are fixedly provided on the automobile seat slide rail, and a seat bracket main body part is connected to the pair of outer front brackets and the pair of rear floor brackets at the same time;

[0005] A break structure for reducing the impact on the vehicle occupants during an automobile collision is provided at the connection between the outer front bracket and / or the rear floor bracket and the seat bracket main body part. By setting the break structure, the impact on the vehicle occupants during a collision can be greatly reduced, and the risk of the occupants colliding with the inner wall of the vehicle body can be minimized.

[0006] A further technical solution is that a connecting shaft is provided on the outer front bracket or the rear foot bracket. The breakable structure includes several teeth integrally formed on the connecting shaft. The teeth on the connecting shaft are provided on the lower half of the side circumference of the connecting shaft. A connecting hole adapted to the connecting shaft is provided on the main body part of the seat bracket. A tooth-shaped surface adapted to the tooth shape on the connecting shaft is provided on the hole side wall below the connecting hole. By changing the surface structure of the connecting shaft, the connection strength of the lower half of the side circumference of the connecting shaft after welding with the connecting hole is slightly smaller than that of the prior art. In this way, when the vehicle is impacted, the lower half of the connecting shaft will break or fall off first, reducing the impact during vehicle impact, and the process of tooth breakage also absorbs part of the impact force.

[0007] Another technical solution is that bolt holes for connecting with the vehicle seat slide rail are provided on the outer front bracket or the rear foot bracket. The breakable structure includes fastening bolts adapted to the bolt holes. The strength of the fastening bolts on the outer front bracket and the rear foot bracket on the same diagonal line of the vehicle body floor is less than the strength of the fastening bolts on the outer front bracket and the rear foot bracket on the other diagonal line of the vehicle body floor. By setting the fastening strengths of the fastening bolts at different positions to be different, some fastening bolts will break first during vehicle collision, achieving the breakage of some fastening bolts to absorb the impact during collision, reducing the impact during vehicle impact, and reducing the risk of personnel hitting the inner wall of the vehicle.

[0008] Another technical solution is that oblong holes for connecting with the vehicle seat slide rail are provided on the outer front bracket or the rear foot bracket. Bolt holes with dimensions smaller than the oblong holes are provided on the vehicle seat slide rail. Fastening bolts adapted to the bolt holes are provided. The breakable structure includes stepped impact-reducing elastic blocks fixedly connected to the inner wall of the oblong hole. Through the setting of the oblong holes and then setting the fastening strength of the fastening bolts (meeting the fastening strength during normal driving but not being able to withstand a greater fastening strength due to the huge acceleration during impact), when the vehicle collides, the main body part of the seat bracket slides relative to the vehicle slide rail (the bolt moves along the oblong hole or moves within the oblong hole). When the bolt moves with the main body part of the entire seat bracket, it is blocked by the impact-reducing elastic blocks. And due to the setting of the stepped impact-reducing elastic blocks, the gradual movement of the bolt and the gradual breaking of the impact-reducing elastic blocks can be realized, effectively reducing the impact during vehicle impact and reducing the risk of personnel hitting the inner wall of the vehicle.

[0009] A further technical solution is that the impact-reducing elastic block includes rubber plates with gradually decreasing dimensions from bottom to top. One end of the rubber plate with the largest dimension abuts against the inner side wall of the oblong hole, and the other end abuts against the fastening bolt. The rubber plates of the impact-reducing elastic block gradually move away from the fastening bolt from bottom to top.

[0010] Another technical solution provided by the present invention is a process for manufacturing a new type of automotive seat bracket, which includes the following process steps carried out in sequence: continuously stamping a steel plate to form a seat bracket main body, an outer front bracket, and a rear floor bracket, and connecting the seat bracket main body, the outer front bracket, the rear floor bracket, and an automotive seat slide rail through a connecting member to form an automotive seat bracket.

[0011] A further technical solution is that the connecting member includes teeth in a discontinuous structure, fastening bolts, or impact-reducing elastic blocks;

[0012] Weld the teeth into the connecting holes;

[0013] Tighten the fastening bolts onto the automotive seat slide rail;

[0014] Weld the impact-reducing elastic blocks to the inner side wall of the oblong hole and to the upper surface of the automotive seat slide rail.

[0015] The advantages and beneficial effects of the present invention are as follows: By setting the discontinuous structure, the impact on the vehicle occupants during a collision can be reduced to a large extent, and the risk of the occupants hitting the inner wall of the vehicle body can be minimized.

[0016] By changing the surface structure of the connecting shaft, the connection strength of the lower half circumference of the connecting shaft after welding to the connecting hole is slightly smaller than that of the prior art. In this way, when the vehicle is impacted, the lower half of the connecting shaft will break or fall off first, reducing the impact during the vehicle collision, and the process of the teeth breaking also absorbs part of the impact force.

[0017] Set the fastening strengths of the fastening bolts at different positions to be different. In this way, when the vehicle collides, some of the fastening bolts will break first, achieving the breakage of some fastening bolts to absorb the impact during the collision, reducing the impact during the vehicle collision, and reducing the risk of the occupants hitting the inner wall of the vehicle body.

[0018] Through the setting of the oblong hole and then setting the fastening strength of the fastening bolts (meeting the fastening strength during normal driving but unable to withstand a greater fastening strength due to the huge acceleration during impact), when the vehicle collides (the bolt translates along the oblong hole or moves within the oblong hole), the seat bracket main body part slides relative to the automotive slide rail, and when the bolt moves with the entire seat bracket main body part, it is blocked by the impact-reducing elastic block. And due to the setting of the stepped impact-reducing elastic block, the gradual movement of the bolt and the gradual bursting of the impact-reducing elastic block can be achieved, effectively reducing the impact during the vehicle collision and reducing the risk of the occupants hitting the inner wall of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a new type of automotive seat bracket of the present invention;

[0020] Figure 2 isFigure 1 Longitudinal sectional view of the front view passing through the oblong hole;

[0021] Figure 3 is Figure 2 Enlarged schematic view of the oblong hole part in

[0022] Figure 4 is Figure 3 Top view of the oblong hole and its internal parts in

[0023] In the figure: 1. Automobile seat slide rail; 2. Outer front bracket; 3. Rear floor bracket; 4. Main body part of the seat bracket; 5. Tightening bolt; 6. Impact-reducing elastic block. Specific implementation manner

[0024] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0025] As Figures 1 to 4 shown, the present invention is a new type of automobile seat bracket, including an automobile seat slide rail 1, a pair of outer front brackets 2 and a pair of rear floor brackets 3 are fixedly arranged on the automobile seat slide rail 1, and a main body part 4 of the seat bracket is connected to the pair of outer front brackets 2 and the pair of rear floor brackets 3 at the same time; a gradual break structure for reducing the impact on the vehicle occupants during a car crash is provided at the connection between the outer front bracket 2 and / or the rear floor bracket 3 and the main body part 4 of the seat bracket. An oblong hole for connecting with the automobile seat slide rail 1 is provided on the outer front bracket 2 or the rear floor bracket 3, a bolt hole with a size smaller than the oblong hole is provided on the automobile seat slide rail 1, a tightening bolt 5 is provided in adaptation with the bolt hole, and the gradual break structure includes a stepped impact-reducing elastic block 6 fixedly connected to the inner wall of the oblong hole. The impact-reducing elastic block 6 includes rubber plates with gradually decreasing sizes from bottom to top, one end of the rubber plate with the largest size abuts against the inner side wall of the oblong hole, and the other end abuts against the tightening bolt 5, and the rubber plates of the impact-reducing elastic block 6 are gradually arranged away from the tightening bolt 5 from bottom to top.

[0026] The process for manufacturing a new type of automotive seat bracket includes the following technological steps carried out in sequence: Continuously stamp a steel plate to form the seat bracket main body, the outer front bracket 2, and the rear floor bracket 3. Connect the seat bracket main body, the outer front bracket 2, the rear floor bracket 3, and the automotive seat slide rail 1 into an automotive seat bracket through connecting parts. Fasten and tighten the fastening bolt 5 to the automotive seat slide rail 1; weld the shock-absorbing elastic block 6 to the inner side wall of the long circular hole and to the upper surface of the automotive seat slide rail 1. The gradual break structure includes a gear fixedly arranged on the outer front bracket or the rear floor bracket. A groove for accommodating the gear is provided on the lower end surface of the outer front bracket or the rear floor bracket. The teeth at the lower end of the gear extend beyond the lower end surface of the outer front bracket or the rear floor bracket. A toothed strip surface adapted to the gear is provided on the automotive seat slide rail (specifically, a toothed strip surface is provided on the upper surface of the upper slide rail of the automotive seat slide rail). The gear is fixedly connected to the upper surface of the automotive seat slide rail. The length of the toothed strip surface is less than the length of the outer front bracket (or the rear floor bracket). A stop block for preventing the outer front bracket or the rear floor bracket from continuing to slide when the teeth on the gear break is provided on the automotive seat slide rail. The stop block is integrally formed with or fixedly connected to the automotive seat slide rail. There is a spacing between the stop block and the end of the outer front bracket or the rear floor bracket (referring to the end closest to the outer front bracket or the rear floor bracket). A fastening bolt can also be provided on this basis to fixedly connect the outer front bracket or the rear floor bracket to the automotive seat slide rail, and the fastening strength of the fastening bolt is less than the fastening strength between the gear and the toothed strip surface on the automotive seat slide rail, forming a three-stage gradual break structure.

[0027] The working principle is as follows:

[0028] Through the setting of the long circular hole and the setting of the fastening strength of the fastening bolt (meeting the fastening strength during normal driving but not being able to withstand a greater fastening strength due to the huge acceleration during impact), when the vehicle collides (the bolt translates along the long circular hole or moves within the long circular hole), the seat bracket main body part slides relative to the automotive slide rail. When the bolt moves along with the entire seat bracket main body part, it is blocked by the shock-absorbing elastic block. And due to the setting of the stepped shock-absorbing elastic block, the gradual movement of the bolt and the gradual bursting of the shock-absorbing elastic block can be realized, effectively reducing the impact during vehicle impact and reducing the risk of the person hitting the inner wall of the vehicle body.

[0029] The stop block provided on one side further alleviates the impact during vehicle impact, preventing the seat main body part from continuing to translate and further reducing the impact at the same time.

[0030] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A novel automobile seat bracket, characterized in that, It includes an automotive seat slide rail, on which a pair of outer front brackets and a pair of rear floor brackets are fixedly provided, and a seat bracket main body part is connected to the pair of outer front brackets and the pair of rear floor brackets simultaneously; The novel automotive seat bracket further includes a break-off structure; The break-off structure includes a gear fixedly arranged on the outer front bracket or the rear floor bracket. A groove for accommodating the gear is provided on the lower end surface of the outer front bracket or the rear floor bracket. The teeth at the lower end of the gear extend beyond the lower end surface of the outer front bracket or the rear floor bracket. A toothed strip surface is provided on the upper surface of the upper slide rail of the automotive seat slide rail. The gear is fixedly connected to the upper surface of the automotive seat slide rail. The length of the toothed strip surface is less than the length of the outer front bracket or the rear floor bracket. A stop block is provided on the automotive seat slide rail to prevent the outer front bracket or the rear floor bracket from continuing to slide when the teeth on the gear break. The stop block is integrally formed with or fixedly connected to the automotive seat slide rail. There is a spacing between the stop block and the end closest to the outer front bracket or the rear floor bracket; The break-off structure further includes a fastening bolt for fixedly connecting the outer front bracket or the rear floor bracket to the automotive seat slide rail. The fastening strength of the fastening bolt is less than the fastening strength between the gear and the toothed strip surface on the automotive seat slide rail.

2. The process for preparing the novel vehicle seat bracket as claimed in claim 1, characterized in that, It includes the following technological steps carried out in sequence: continuously stamping a steel plate to make the seat bracket main body, the outer front bracket and the rear floor bracket, and connecting the seat bracket main body, the outer front bracket, the rear floor bracket and the automotive seat slide rail into an automotive seat bracket through a connecting piece.

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