ACU mounting bracket, floor structure and automobile

Abstract

This invention provides an ACU mounting bracket, a floor structure, and an automobile. The ACU mounting bracket includes a saddle-shaped bracket body with multiple ACU mounting points. It has an arched structure in the longitudinal direction, with the ACU mounting points located at the highest points of the arch. The front of the bracket body has a flanged surface for connection to the vehicle's floor structure. The floor structure includes a front floor, a left reinforcing beam for the central channel located on the left side of the front floor, a right reinforcing beam for the central channel located on the right side of the front floor, and an ACU mounting bracket spanning between the left and right reinforcing beams. This invention significantly improves the dynamic stiffness of the ACU mounting points through a three-cavity structure design, enhances the overall strength of the bracket through a double-arch structure and multiple reinforcing ribs, and improves structural stability by creating a full-cycle connection between the bracket and the vehicle body through the flanged surface design.

Description

Technical Field

[0001] This invention relates to the field of automotive body structure technology, specifically to an ACU mounting bracket, a floor structure, and an automobile. Background Technology

[0002] With the development of the automotive industry, vehicle safety performance has received increasing attention. Airbags, as a core component of a vehicle's passive safety system, can deploy rapidly in the event of a collision to protect the safety of occupants. The Airbag Control Unit (ACU), as the control core of the airbag system, accurately collects, analyzes, judges, and processes signals captured by the collision acceleration sensors. Once a collision is detected, the ACU immediately issues a command to activate the gas generator and detonate the airbag.

[0003] To ensure accurate judgment and rapid response from the ACU (Airbag Control Unit), the installation environment must possess high stability and reliability. Among the key factors affecting performance, the dynamic stiffness of the ACU mounting point is crucial. Insufficient dynamic stiffness at the mounting point can lead to vibration interference during vehicle operation, affecting the ACU's normal function and potentially preventing timely airbag deployment in the event of a collision. Currently, non-load-bearing vehicle floor structures still have shortcomings in terms of dynamic stiffness at the ACU mounting point, failing to meet increasingly stringent safety performance requirements.

[0004] In summary, the current installation structure of ACU generally suffers from the following problems:

[0005] 1. Insufficient dynamic stiffness at the ACU mounting point affects the accurate acquisition of collision signals;

[0006] 2. The mounting bracket has a simple structure and lacks effective reinforcement measures, resulting in poor stability of the mounting point;

[0007] 3. The existing brackets are connected to the vehicle body in a single way, making it difficult to form a stable support structure. Summary of the Invention

[0008] The purpose of this invention is to provide an ACU mounting bracket, floor structure, and automobile, which significantly improves the dynamic stiffness of the ACU mounting point through optimized structural design and improves the working environment of the airbag controller.

[0009] The purpose of this invention is to provide an ACU mounting bracket, floor structure, and automobile, which significantly improves the dynamic stiffness of the ACU mounting point through optimized structural design and improves the working environment of the airbag controller.

[0010] To achieve the above objectives, in a first aspect, the present invention provides an ACU mounting bracket, comprising: a bracket body, the bracket body being saddle-shaped and having multiple ACU mounting points; the bracket body having an arched structure in the longitudinal direction, the ACU mounting points being located at the high point of the arch; and the front part of the bracket body being provided with a flanged surface for connecting to the vehicle floor structure.

[0011] In some alternative embodiments of the present invention, the support body has a double-arch structure in the longitudinal direction.

[0012] In some optional embodiments of the present invention, the ACU mounting point includes three mounting points, wherein two mounting points are located at the front of the bracket body and one mounting point is located at the rear of the bracket body.

[0013] In some alternative embodiments of the present invention, the ACU mounting point is formed by opening a mounting hole at the high point of the arch and fixing a pre-embedded part in the mounting hole.

[0014] Preferably, the sheet metal structure at the location of the embedded part is a closed cavity structure.

[0015] Preferably, the two rear embedded parts are respectively disposed in the inner cavity of the square boss, and the two front embedded parts are disposed in the inner cavity of the strip boss.

[0016] In some optional embodiments of the present invention, the bracket body is a sheet metal structure, and annular reinforcing ribs are provided around the ACU mounting point.

[0017] In some optional embodiments of the present invention, a rectangular recessed hole is provided at the middle position of the support body.

[0018] In some alternative embodiments of the present invention, a strip rib is provided at the rear of the bracket body, and the strip rib spans the rear ACU mounting point.

[0019] Preferably, the rear part of the support body is further provided with two triangular ribs to improve the rigidity of the rear facade of the support.

[0020] In a second aspect, the present invention provides a floor structure, comprising: a front floor; a left reinforcing beam of a central channel disposed on the left side of the middle of the front floor; a right reinforcing beam of a central channel disposed on the right side of the middle of the front floor; and the ACU mounting bracket described in the first aspect; wherein the ACU mounting bracket is disposed transversely between the left reinforcing beam of the central channel and the right reinforcing beam of the central channel.

[0021] In some alternative embodiments of the invention, the left reinforcing beam of the central channel and the right reinforcing beam of the central channel form a central channel on the front floor.

[0022] In some optional embodiments of the present invention, the ACU mounting bracket, the left reinforcing beam of the middle channel, and the right reinforcing beam of the middle channel form a three-cavity structure in the transverse direction.

[0023] Preferably, the three-cavity structure includes: a first cavity formed by the left reinforcing beam of the central channel; a second cavity formed by the right reinforcing beam of the central channel; and a third cavity formed between the ACU mounting bracket and the front floor.

[0024] In some alternative embodiments of the present invention, the ACU mounting bracket is fixedly connected to the left reinforcing beam of the middle channel and the right reinforcing beam of the middle channel by welding points.

[0025] In some alternative embodiments of the present invention, the flange of the ACU mounting bracket is folded downward and welded to the left reinforcing beam of the central channel, the right reinforcing beam of the central channel, and the front floor.

[0026] In some optional embodiments of the present invention, both the left reinforcing beam and the right reinforcing beam of the middle channel are U-shaped groove structures with their openings facing each other.

[0027] Preferably, the opening of the U-shaped groove structure faces the ACU mounting bracket.

[0028] In some alternative embodiments of the invention, the left and right reinforcing beams of the central channel extend longitudinally along the vehicle body and are welded and fixed to the front floor.

[0029] In some optional embodiments of the present invention, the two sides of the ACU mounting bracket are respectively attached to and welded to the upper end faces of the left reinforcing beam and the right reinforcing beam of the middle channel.

[0030] Thirdly, the present invention provides an automobile including the floor structure as described in the second aspect.

[0031] In some alternative embodiments of the present invention, the ACU mounting bracket is fixedly mounted with the airbag controller via the three ACU mounting points.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] This invention significantly improves the dynamic stiffness of the ACU mounting point through a three-cavity structure design; enhances the overall strength of the bracket by adopting a double-arch structure and multiple reinforcing ribs; improves structural stability by using a flanged surface design to create a full-cycle connection between the bracket and the vehicle body; and optimizes weight while ensuring stiffness through a reasonable lightweight design.

[0034] Specifically:

[0035] 1. The three-cavity structure formed by the left and right reinforcing beams of the central channel and the front floor supports the ACU mounting bracket, making the mounting point more stable and reliable and significantly improving dynamic stiffness.

[0036] 2. The double-arched cavity structure design of the ACU mounting bracket, with the mounting screws arranged in the closed cavity, further improves the dynamic stiffness of the mounting point and ensures the installation stability of the ACU.

[0037] 3. By adding ring-shaped reinforcing ribs, strip ribs, triangular ribs, and other structures to the ACU mounting bracket, the rigidity of the bracket is strengthened and the dynamic stiffness of the mounting point is improved.

[0038] 4. The front of the ACU mounting bracket has a flanged surface that connects to the reinforcing beam and the front floor, supporting the front of the bracket and ensuring that the entire bracket is connected, making the structure more stable and reliable with better dynamic stiffness. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments disclosed in this invention, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention.

[0040] Figure 1 This is a schematic diagram of the structure of an ACU mounting bracket provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the assembly state of an ACU mounting bracket provided in an embodiment of the present invention, and also... Figure 5 Enlarged view of point P in the middle;

[0042] Figure 3 yes Figure 2 AA section diagram;

[0043] Figure 4 yes Figure 4 BB section diagram;

[0044] Figure 5 This is a schematic diagram of a floor structure provided in an embodiment of the present invention;

[0045] Figure 6 This is an exploded view of a floor structure provided in an embodiment of the present invention. Detailed Implementation

[0046] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below with reference to the accompanying drawings and by way of listing some optional embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] Example 1

[0048] like Figures 1 to 4 As shown, this embodiment provides an ACU mounting bracket 1 for improving the dynamic stiffness of ACU mounting points. The bracket includes a bracket body, which is generally saddle-shaped and has multiple ACU mounting points a. The bracket body has a double-arched structure in the longitudinal direction, with the ACU mounting points a located at the highest point of the arches. A flanged surface 17 is provided at the front of the bracket body for connection to the vehicle floor structure.

[0049] In this embodiment, the bracket body is made of sheet metal, which has good strength and rigidity. In the longitudinal direction, the bracket body has a double-arch structure, with an arched protrusion at both the front and rear. This double-arch design effectively disperses stress, not only improving the overall strength of the bracket but also providing an ideal installation location for the ACU mounting point.

[0050] The specific arrangement of the ACU mounting points is as follows: three mounting points a1, a2, and a3 are included, with two mounting points (a1 and a2) located at the front of the bracket body and one mounting point (a3) ​​located at the rear of the bracket body. This three-point support arrangement ensures the installation stability of the ACU. Each mounting point is formed by opening a mounting hole at the highest point of the arch and fixing a pre-embedded part (such as welding screw 5) in the mounting hole. The sheet metal structure at the location of the pre-embedded part is a closed cavity structure. This design effectively improves the dynamic stiffness of the mounting point, ensuring that the ACU is minimally affected by vibration during vehicle operation.

[0051] In some embodiments of the present invention, this embodiment focuses on illustrating the specific structural design of the ACU mounting point. The ACU mounting point a is formed by opening a mounting hole at the high point of the arch and welding screws 5 into the mounting hole. To improve mounting strength, the sheet metal structure at the location of the screws 5 is designed as a closed cavity structure.

[0052] Specifically, one screw 5 at the rear is located in the inner cavity of the square boss 15, while the two screws 5 at the front are located in the inner cavity of the strip-shaped boss 16. This design provides better support and resistance to deformation at the mounting point.

[0053] In some optional embodiments of the present invention, in order to further enhance the rigidity of the bracket and improve the dynamic stiffness of the ACU mounting point, the bracket body is reinforced in the following parts:

[0054] A ring-shaped reinforcing rib 11 is provided around the ACU mounting point a1. The presence of the ring-shaped reinforcing rib improves the rigidity of the sheet metal around the mounting point and reduces deformation caused by vibration.

[0055] A rectangular recessed hole 12 is provided in the middle of the support body. This design reduces the weight of the support while forming a box-shaped structure, which enhances the overall rigidity of the support.

[0056] A strip rib 13 is provided at the rear of the bracket body, spanning the rear ACU mounting point a3. The presence of the strip rib further improves the dynamic stiffness of the mounting point a3.

[0057] Two triangular ribs 14 are provided on the rear facade of the support to improve the rigidity of the rear facade and prevent deformation of the rear facade when subjected to vibration.

[0058] In some embodiments of the present invention, the front part of the bracket body is provided with a flange 17, which folds downward and connects to the vehicle floor structure (such as the front floor 4). The flange design allows the front part of the bracket to form a full circumferential connection with the floor, further improving the stability and dynamic stiffness of the bracket at the front.

[0059] Example 2

[0060] like Figures 2 to 6 As shown, this embodiment provides a floor structure including the ACU mounting bracket 1 described in Embodiment 1. The floor structure includes a front floor 4, a left reinforcing beam 2 for the central channel, and a right reinforcing beam 3 for the central channel.

[0061] In some embodiments of the present invention, the left reinforcing beam 2 and the right reinforcing beam 3 of the central channel are respectively arranged on the left and right sides of the center of the front floor 4. They are welded to the front floor 4 via weld points 6, forming a U-shaped groove structure with the opening facing upwards and towards the ACU mounting bracket 1. These two reinforcing beams extend longitudinally along the vehicle, forming a central channel on the front floor.

[0062] ACU mounting bracket 1 is positioned horizontally between the left reinforcing beam 2 and the right reinforcing beam 3 of the central channel. The two sides of the bracket body are respectively attached to the upper surfaces of the left and right reinforcing beams 2 and 3 of the central channel and are welded together at weld points 6. This connection method provides stable lateral support for the bracket.

[0063] In addition, the flange 17 of the ACU mounting bracket 1 is folded downwards and welded to the left reinforcing beam 2 of the central channel, the right reinforcing beam 3 of the central channel, and the front floor 4. The design of the flange 17 not only enhances the rigidity of the front of the bracket, but also connects the entire circumference of the bracket, improving the stability and dynamic rigidity of the structure.

[0064] Through the above structural design, the left reinforcing beam 2 and the right reinforcing beam 3 of the central channel, together with the front floor 4 and the ACU mounting bracket 1, form a three-cavity structure, as follows: Figure 3 As shown:

[0065] Cavity structure ①: A closed cavity formed by welding the left reinforcing beam 2 of the central channel to the front floor 4.

[0066] Cavity structure ②: A closed cavity formed by welding the right reinforcing beam 3 of the central channel to the front floor 4.

[0067] Cavity structure ③: A closed cavity formed between the ACU mounting bracket 1 and the front floor 4.

[0068] Specifically, the connection methods between the components:

[0069] ACU mounting bracket 1 is fixedly connected to the left reinforcing beam 2 and the right reinforcing beam 3 of the middle channel by welding points;

[0070] The flange b of the ACU mounting bracket 1 is folded downward and welded to the left reinforcing beam 2 of the middle channel, the right reinforcing beam 3 of the middle channel, and the front floor 4.

[0071] Both the left reinforcing beam 2 and the right reinforcing beam 3 of the middle channel are U-shaped groove structures with their openings facing each other and pointing towards the ACU mounting bracket 1.

[0072] The left reinforcing beam 2 and the right reinforcing beam 3 of the central tunnel extend longitudinally along the vehicle body and are welded and fixed to the front floor 4;

[0073] The two sides of the ACU mounting bracket 1 are respectively attached to and welded to the upper end faces of the left reinforcing beam 2 and the right reinforcing beam 3 of the middle channel.

[0074] This three-cavity structure supports the ACU mounting bracket 1, significantly improving the dynamic stiffness of the ACU mounting point and ensuring the stability of the ACU during operation.

[0075] Example 3

[0076] This embodiment provides a vehicle including the floor structure described in Embodiment 2. In this vehicle, the ACU mounting bracket 1 is fixedly mounted with the airbag controller (ACU) via three ACU mounting points a. Through the above-described optimized structural design, the installation environment of the ACU is significantly improved, the dynamic stiffness of the mounting points is greatly increased, and the reliable operation of the ACU during vehicle movement and collisions is ensured.

[0077] The ACU is fastened to mounting point a of the ACU mounting bracket 1 by bolts. Since the sheet metal structure at mounting point a is a closed cavity structure, and there are reinforcing structures such as annular reinforcing ribs 11 and strip ribs 13 around it, the dynamic stiffness of the mounting point is fully guaranteed.

[0078] Mounted on an optimized floor structure, the ACU can more accurately detect vehicle collision signals and promptly deploy airbags. In the event of a collision, the ACU can execute commands quickly and accurately to ensure the safety of occupants.

[0079] The ACU mounting bracket, floor structure, and automobile provided by this invention have the following advantages:

[0080] 1. The saddle shape and double-arch structure design provide good structural strength;

[0081] 2. The three-point support installation method ensures the installation stability of the ACU;

[0082] 3. The overall stiffness is further improved through the design of multiple strengthening structures;

[0083] 4. The three-cavity structure design significantly improves the anti-collision performance;

[0084] 5. Reliable welding connections are used between all components, ensuring the integrity of the structure.

[0085] It will be readily understood by those skilled in the art that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, substitutions, improvements, etc., made under the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A floor structure, characterized in that include: Front floor; The left reinforcing beam of the central channel is located on the left side of the middle of the front floor. The right reinforcing beam of the central channel is located on the right side of the center of the front floor; ACU mounting bracket, the ACU mounting bracket includes a bracket body in the shape of a saddle, the bracket body has multiple ACU mounting points; the bracket body has an arched structure in the longitudinal direction, and the ACU mounting points are located at the high point of the arch; The ACU mounting bracket is positioned across the space between the left reinforcing beam and the right reinforcing beam of the central channel. The left and right reinforcing beams of the central channel form a central channel on the front floor. The ACU mounting bracket, the left reinforcing beam of the central channel, and the right reinforcing beam of the central channel form a three-cavity structure in the transverse direction. The three-cavity structure includes: The first cavity formed by the left reinforcing beam of the central channel; The second cavity formed by the right reinforcing beam of the central channel; The third cavity is formed between the ACU mounting bracket and the front floor.

2. The floor structure according to claim 1, characterized in that: Both the left and right reinforcing beams of the central channel are U-shaped groove structures with their openings facing each other and toward the ACU mounting bracket. The left and right reinforcing beams of the central channel extend longitudinally along the vehicle body and are welded and fixed to the front floor. The two sides of the ACU mounting bracket are respectively attached to and welded to the upper end faces of the left and right reinforcing beams of the middle channel.

3. The floor structure according to claim 1, characterized in that: The support body has a double-arch structure in the longitudinal direction; The ACU mounting point includes three mounting points, two of which are located at the front of the bracket body and one at the rear of the bracket body. The ACU mounting point is formed by opening a mounting hole at the high point of the arch and fixing a pre-embedded part in the mounting hole. The sheet metal structure at the location of the embedded part is a closed cavity structure.

4. The floor structure according to claim 3, characterized in that: One of the pre-embedded parts at the rear is respectively set in the inner cavity of the square boss, and the two pre-embedded parts at the front are set in the inner cavity of the strip boss.

5. The floor structure according to any one of claims 1, 3, or 4, characterized in that: The bracket body is a sheet metal structure, and annular reinforcing ribs are provided around the ACU mounting point; A rectangular countersunk hole is provided in the middle of the support body. A strip rib is provided at the rear of the bracket body, spanning the ACU mounting point at the rear. Two triangular ribs are also provided at the rear of the support body to improve the rigidity of the rear facade of the support. The front of the bracket body is provided with a flange for connecting to the vehicle floor structure.

6. A motor vehicle comprising a floor structure as claimed in any one of claims 1 to 5, characterized in that: The ACU mounting bracket is fixedly mounted with the airbag controller through the multiple ACU mounting points.

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