ACU mounting bracket, floor structure and automobile

Abstract

The invention provides an ACU mounting bracket, a floor structure and an automobile. The ACU installation support comprises a saddle-shaped support body, the support body is provided with a plurality of ACU installation points and is of an arch structure in the longitudinal cutting direction, the ACU installation points are arranged at the high positions of the arch, and the front portion of the support body is provided with a flanging face used for being connected with a vehicle body floor structure. The floor structure comprises a front floor, a middle channel left reinforcing beam arranged on the left side of the middle of the front floor, a middle channel right reinforcing beam arranged on the right side of the middle of the front floor, and an ACU installation support arranged between the middle channel left reinforcing beam and the middle channel right reinforcing beam in a crossing mode. The dynamic stiffness of an ACU mounting point is remarkably improved through the design of the three-cavity structure, the overall strength of the support is improved through the design of the double-arch structure and the multiple reinforcing ribs, the support and a vehicle body are connected in a complete period through the design of the turnup face, and the stability of the structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile body structures, and in particular to an ACU mounting bracket, a floor structure and an automobile. Background Art

[0002] With the development of the automobile industry, the safety performance of vehicles has received more and more attention. As the core component of the vehicle's passive safety system, airbags can be deployed quickly to protect the safety of drivers and passengers when the vehicle collides. The airbag controller (Airbag Control Unit ACU) is the control core of the airbag system. Its function is to accurately collect, analyze, judge and process the signals captured by the collision acceleration sensor. Once a collision is determined, the ACU will immediately issue a command to start the gas generator and detonate the airbag.

[0003] In order to ensure the ACU's accurate judgment and rapid response, the ACU's installation environment must have high stability and reliability. Among them, the dynamic stiffness of the ACU installation point is one of the important factors affecting its performance. If the dynamic stiffness of the installation point is insufficient, the ACU may be disturbed by vibration during vehicle driving, affecting its normal operation, and even failing to trigger the airbag in time in the event of a collision. At present, the non-load-bearing body floor structure still has deficiencies in the dynamic stiffness of the ACU installation point, which cannot meet the increasingly high safety performance requirements.

[0004] In summary, at present, the installation structure of ACU generally has the following problems:

[0005] 1. The dynamic stiffness of the ACU installation point is insufficient, which affects the accurate collection 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 bracket has a single connection method with the vehicle body, which makes it difficult to form a stable supporting structure. Summary of the invention

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

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

[0010] To achieve the above-mentioned purpose, in a first aspect, the present invention provides an ACU mounting bracket, comprising: a bracket body, the bracket body is in the shape of a saddle, and has multiple ACU mounting points; the bracket body is in the shape of an arch in the longitudinal direction, and the ACU mounting point is arranged at the high point of the arch; the front part of the bracket body is provided with a flange surface for connecting to the vehicle body floor structure.

[0011] In some optional 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, two of which are arranged at the front of the bracket body, and one mounting point is arranged at the rear of the bracket body.

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

[0014] Preferably, the sheet metal structure where the embedded parts are located is a closed cavity structure.

[0015] Preferably, the two embedded parts at the rear are respectively arranged in the inner cavity of the square boss, and the two embedded parts at the front are arranged 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 an annular reinforcement rib is arranged around the ACU installation point.

[0017] In some optional embodiments of the present invention, a rectangular countersunk hole is provided in the middle of the bracket body.

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

[0019] Preferably, two triangular ribs are further provided at the rear of the bracket body to increase the rigidity of the rear facade of the bracket.

[0020] In a second aspect, the present invention provides a floor structure, comprising: a front floor; a left reinforcing beam of a middle channel arranged on the left side of the middle of the front floor; a right reinforcing beam of a middle channel arranged 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 arranged across between the left reinforcing beam of the middle channel and the right reinforcing beam of the middle channel.

[0021] In some optional embodiments of the present invention, the left reinforcing beam of the middle channel and the right reinforcing beam of the middle 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 middle channel; a second cavity formed by the right reinforcing beam of the middle channel; and a third cavity formed between the ACU mounting bracket and the front floor.

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

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

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

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

[0028] In some optional embodiments of the present invention, the left reinforcement beam of the center channel and the right reinforcement beam of the center 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, two sides of the ACU mounting bracket are respectively attached to and welded to the upper end surfaces of the left reinforcement beam of the middle channel and the right reinforcement beam of the middle channel.

[0030] In a third aspect, the present invention provides a car, comprising the floor structure as described in the second aspect.

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

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention significantly improves the dynamic stiffness of the ACU mounting point through the design of a three-cavity structure; adopts a double-arch structure and a design of multiple reinforcing ribs to improve the overall strength of the bracket; through the design of the flange surface, the bracket and the vehicle body are connected in a full cycle, thereby improving the stability of the structure; through a reasonable lightweight design, weight optimization is achieved while ensuring stiffness.

[0034] Specifically:

[0035] 1. The three-cavity structure composed of the left reinforcement beam of the middle channel, the right reinforcement beam of the middle channel and the front floor supports the ACU mounting bracket, making the mounting point more stable and reliable, and significantly improving the dynamic stiffness.

[0036] 2. The double-arch cavity structure design of the ACU mounting bracket and the mounting screws arranged in the closed cavity further improve the dynamic stiffness of the mounting point and ensure the installation stability of the ACU.

[0037] 3. By adding annular reinforcement 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, which is connected to the reinforcing beam and the front floor downward, supporting the front of the bracket so that the entire bracket circumference is connected, the structure is more stable and reliable, and the dynamic stiffness is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments disclosed in the present invention, the drawings of the embodiments will be briefly introduced below. These drawings are only used for illustrative purposes and are not intended to limit the protection scope of the present invention.

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

[0041] Figure 2 is a schematic diagram of an ACU mounting bracket assembly state provided by an embodiment of the present invention, and is also Figure 5 The enlarged schematic diagram of P in the middle;

[0042] Figure 3 yes Figure 2 AA cross section in;

[0043] Figure 4 yes Figure 4 BB cross-section diagram in;

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

[0045] Figure 6 It is an exploded schematic diagram of a floor structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0046] The technical solution of the present invention (including the preferred technical solution) is further described in detail below by means of the accompanying drawings and by listing some optional embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work 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 the ACU installation point. The bracket includes a bracket body, which is in the shape of a saddle as a whole and is provided with a plurality of ACU mounting points a. The bracket body is in a double arch structure in the longitudinal direction, and the ACU mounting point a is arranged at the high point of the arch. A flange surface 17 is arranged at the front of the bracket body for connecting with the vehicle body floor structure.

[0049] In this embodiment, the bracket body is made of sheet metal material with good strength and rigidity. In the longitudinal direction, the bracket body has a double arch structure, that is, there is an arch protrusion at the front and back. The double arch design can effectively disperse stress, not only improves the overall strength of the bracket, but also provides an ideal installation position for the ACU installation point.

[0050] The specific arrangement of the ACU mounting point a is as follows: it includes three mounting points a1, a2, and a3, of which two mounting points (a1, a2) are arranged at the front of the bracket body, and one mounting point (a3) ​​is arranged at the rear of the bracket body. This three-point support arrangement can ensure the installation stability of the ACU. Each mounting point is formed by opening a mounting hole at the high point of the arch and fixing an embedded part (such as a welding screw 5) in the mounting hole. The sheet metal structure where the embedded part is located is a closed cavity structure. This design can effectively improve the dynamic stiffness of the mounting point and ensure that the vibration effect on the ACU during vehicle driving is minimized.

[0051] In some embodiments of the present invention, this embodiment focuses on 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 a screw 5 in the mounting hole. In order to improve the mounting strength, the sheet metal structure at the location of the screw 5 is designed as a closed cavity structure.

[0052] Specifically, one screw 5 at the rear is respectively arranged in the inner cavity of the square boss 15, and two screws 5 at the front are arranged in the inner cavity of the strip boss 16. This design enables the mounting point to have a better supporting effect and anti-deformation ability.

[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 locations:

[0054] An annular reinforcement rib 11 is provided around the ACU mounting point a1. The presence of the annular reinforcement rib improves the rigidity of the sheet metal around the mounting point and reduces deformation caused by vibration.

[0055] The middle position of the support body is provided with a rectangular sinking hole 12. This design reduces the weight of the support and forms a box-type structure, thereby enhancing the overall rigidity of the support.

[0056] A strip rib 13 is provided at the rear of the bracket body, spanning the ACU mounting point a3 at the rear. 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 increase the rigidity of the rear facade of the support and prevent the rear facade from deforming when subjected to vibration.

[0058] In some embodiments of the present invention, the front portion of the bracket body is provided with a flanged surface 17, which is folded downward and connected to the vehicle body floor structure (such as the front floor 4). The design of the flanged surface enables the front portion of the bracket to form a full-circle connection with the floor, further improving the stability and dynamic stiffness of the bracket at the front portion.

[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 of a middle channel, and a right reinforcing beam 3 of a middle 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 middle of the front floor 4. They are respectively welded to the front floor 4 through welding points 6 to form a U-shaped groove structure with the opening facing upwards and facing the ACU mounting bracket 1. The two reinforcing beams extend in the longitudinal direction of the vehicle to form a central channel on the front floor.

[0062] The ACU mounting bracket 1 is arranged across the middle channel left reinforcing beam 2 and the middle channel right reinforcing beam 3. The two sides of the bracket body are respectively fitted with the upper end surfaces of the middle channel left reinforcing beam 2 and the middle channel right reinforcing beam 3, and are welded and fixed by welding points 6. This connection method enables the bracket to be firmly supported in the lateral direction.

[0063] In addition, the flanged surface 17 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. The design of the flanged surface 17 not only enhances the rigidity of the front part of the bracket, but also connects the entire circumference of the bracket, thereby improving the stability and dynamic rigidity of the structure.

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

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

[0066] Cavity structure ②: A closed cavity formed by welding the right reinforcement beam 3 of the middle channel and 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 between the components:

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

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

[0071] The left reinforcing beam 2 of the middle channel and the right reinforcing beam 3 of the middle channel are both U-shaped groove structures, with openings arranged opposite to each other and the openings facing the ACU mounting bracket 1;

[0072] The left reinforcement beam 2 and the right reinforcement beam 3 of the center channel extend in the longitudinal direction of the vehicle body and are welded and fixed to the front floor 4;

[0073] Both sides of the ACU mounting bracket 1 are respectively bonded and welded to the upper end surfaces of the left reinforcing beam 2 of the middle channel and the right reinforcing beam 3 of the middle channel.

[0074] This three-cavity structure jointly supports the ACU mounting bracket 1, greatly 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 car including the floor structure described in the second embodiment. In the car, the ACU mounting bracket 1 is fixedly mounted with an airbag controller (ACU) through three ACU mounting points a. Through the above optimized structural design, the installation environment of the ACU is significantly improved, the dynamic stiffness of the mounting point is greatly improved, and the reliable operation of the ACU during vehicle driving and collision is ensured.

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

[0078] Installed on the optimized floor structure, the ACU can detect the collision signal of the vehicle more accurately and trigger the airbag in time. When the vehicle collides, the ACU can execute instructions quickly and accurately to ensure the safety of the driver and passengers.

[0079] The ACU mounting bracket, floor structure and automobile provided by the present 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 is adopted to ensure the installation stability of ACU;

[0082] 3. The overall rigidity is further improved through the setting of multiple reinforcement structures;

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

[0084] 5. Reliable welding connection is adopted between various components to ensure the integrity of the structure.

[0085] Those skilled in the art will readily appreciate that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. An ACU mounting bracket, characterized in that: include: A support body, the support body is in a saddle shape and has a plurality of ACU mounting points; The support body is in an arched structure in the longitudinal direction, and the ACU mounting point is arranged at the high point of the arch.

2. The ACU mounting bracket 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 arranged at the front of the bracket body and one mounting point is arranged at the rear of the bracket body; The ACU mounting point is formed by opening a mounting hole at the arch high point and fixing an embedded part in the mounting hole; The sheet metal structure where the embedded parts are located is a closed cavity structure.

3. The ACU mounting bracket according to claim 2, characterized in that: One of the embedded parts at the rear is respectively arranged in the inner cavity of the square boss, and the two embedded parts at the front are arranged in the inner cavity of the strip boss.

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

5. The ACU mounting bracket according to claim 4, characterized in that: The front part of the bracket body is provided with a flange surface for connecting with the vehicle body floor structure.

6. A floor structure, characterized in that: include: front floor; A left reinforcement beam of a central channel arranged on the left side of the middle of the front floor; A right reinforcement beam of a middle channel arranged on the right side of the middle of the front floor; The ACU mounting bracket according to any one of claims 1 to 5; Wherein, the ACU mounting bracket is arranged across between the left reinforcement beam of the middle channel and the right reinforcement beam of the middle channel.

7. The floor structure according to claim 6, characterized in that: The left reinforcing beam of the middle channel and the right reinforcing beam of the middle channel form a central channel on the front floor; 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.

8. The floor structure according to claim 7, characterized in that: The three-cavity structure comprises: A first cavity formed by the left reinforcing beam of the middle channel; A second cavity formed by the right reinforcing beam of the middle channel; A third cavity is formed between the ACU mounting bracket and the front floor.

9. The floor structure according to claim 7, characterized in that: The left reinforcement beam of the middle channel and the right reinforcement beam of the middle channel are both U-shaped groove structures, and the openings are arranged opposite to each other and face the ACU mounting bracket; The left reinforcement beam of the middle channel and the right reinforcement beam of the middle channel extend longitudinally along the vehicle body and are welded and fixed to the front floor; Both sides of the ACU mounting bracket are respectively bonded and welded to the upper end surfaces of the left reinforcing beam of the middle channel and the right reinforcing beam of the middle channel.

10. An automobile, comprising a floor structure according to any one of claims 6 to 9, characterized in that: The ACU mounting bracket is fixedly mounted with an airbag controller via the multiple ACU mounting points.

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