New energy automobile rear cross beam mounting support

Abstract

The utility model discloses a new energy automobile rear cross beam mounting support relates to mounting support technical field, including fixed section and telescopic section, the fixed section and telescopic section nested assembly form the connecting structure of relative movement, and this structure realizes the flexible adjustment of installation position through relative movement, adapts the installation size difference of different vehicle models rear cross beam and car body, promotes general adaptability, in the new, through the composite energy absorption design of collocation diamond collapse hole and the fluid bag of adaptation groove type, the adhesion intensification of combination reinforcing lining and fixed section, the sandwich shock absorption of polyurethane elastic buffer pad, and the stable connection of reinforcing mounting block and rear cross beam, realize the comprehensive effect of support multi -vehicle type general adaptation, collision energy gradient absorption, connecting structure strong and tough stable and vibration effective buffering, both improve the installation flexibility and collision safety, and strengthen the structure bearing capacity, prolong the service life of support.

Description

Technical Field

[0001] This utility model relates to the field of mounting bracket technology, and in particular to a mounting bracket for the rear crossbeam of a new energy vehicle. Background Technology

[0002] In the field of new energy vehicle parts manufacturing, the mounting bracket, a core component of the rear bumper beam, has become an increasingly prominent pain point for manufacturers.

[0003] Most energy-absorbing structures in vehicle brackets have a simplistic design, relying solely on the collapse and deformation of metal components, or lacking sufficient matching between energy-absorbing materials and structures. This fails to achieve the gradient protection effect of effectively absorbing energy in low-speed, minor collisions and providing strong impact resistance in high-speed, severe collisions. Consequently, during a collision, the protection either fails prematurely or the impact force is directly transmitted to critical vehicle structures (such as the battery pack). This not only reduces vehicle safety performance but also exposes manufacturers to the risk of declining market reputation and soaring after-sales costs due to insufficient product protection.

[0004] In summary, considering factors such as manufacturers' production efficiency, cost control, product competitiveness, and quality reputation, there is an urgent need for a new energy vehicle rear anti-collision beam mounting bracket that can achieve universal compatibility across multiple vehicle models, gradient collision energy absorption, and strong and stable connection, in order to break through existing technical bottlenecks and enhance manufacturers' overall competitive advantage in the industry. Utility Model Content

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a rear crossbeam mounting bracket for new energy vehicles. It solves the technical problems faced by manufacturers in the production and R&D of rear crossbeam mounting brackets for new energy vehicles, such as long R&D cycles, high costs, difficulty in achieving gradient protection due to the single energy absorption structure, and easy loosening of the connection structure affecting efficiency and causing quality issues. Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: A rear crossbeam mounting bracket for new energy vehicles includes a fixed section and a telescopic section. The fixed section and the telescopic section are nested and assembled to form a relatively movable connection structure. This structure allows for flexible adjustment of the installation position through relative movement, adapting to the different installation dimensions of the rear crossbeam and the vehicle body of different models, thus improving universal adaptability. The fixed section has a first adjustment hole, and the telescopic section has a second adjustment hole corresponding to the first adjustment hole. High-strength alloy steel bolts are inserted into the first and second adjustment holes. The adjustment holes and high-strength bolts cooperate to achieve precise positioning and ensure connection strength, preventing loosening after installation. A diamond-shaped crumple hole is formed through the fixed section, and a fluid bladder is installed inside the diamond-shaped crumple hole. The diamond-shaped crumple hole can guide orderly deformation during a collision, forming a gradient energy absorption structure with the fluid bladder. During low-speed collisions, energy is absorbed through deformation of the crumple hole, and during high-speed collisions, the material inside the fluid bladder solidifies to enhance impact resistance and improve collision safety. A polyurethane elastic buffer pad is installed inside the fixed section.

[0007] Preferably, the telescopic section is provided with a reinforcing mounting block. As an extension structure of the telescopic section, the reinforcing mounting block can increase the connection area with the rear crossbeam and improve the connection stability. The rear crossbeam is connected to the reinforcing mounting block. By connecting the reinforcing mounting block with the rear crossbeam, the rear crossbeam is subjected to more uniform force and local stress concentration is reduced. The fixed section is provided with a reinforcing liner. The reinforcing liner can enhance the overall structural strength of the fixed section and reduce the deformation of the fixed section, especially when subjected to collision impact.

[0008] Preferably, the fluid bladder is connected to the adhesive layer on the reinforcing liner. The adhesive layer connection ensures that the fluid bladder is reliably fixed in the collapse hole, preventing it from falling off during a collision and affecting the energy absorption effect. The polyurethane elastic buffer pad is sandwiched between the nested mating surfaces of the fixed section and the telescopic section. The buffer pad can absorb high-frequency vibrations during vehicle driving or minor collisions, reduce the transmission of impact force to the vehicle body, and protect the vehicle body structure.

[0009] Preferably, the reinforcing liner is connected to the inner wall of the fixed section by an adhesive layer. The adhesive layer connection makes the reinforcing liner and the fixed section fit tightly, which synergistically improves the structural rigidity and avoids the stress concentration problem caused by traditional welding. The shape of the fluid bladder is adapted to the groove shape of the rhomboid collapse hole. The shape adaptation ensures that the fluid bladder can fully fill the collapse hole and participate in energy absorption simultaneously during collapse deformation, maximizing the energy absorption efficiency.

[0010] The beneficial effects of the technical solutions provided in this application include at least the following: In this new design, through the nested movable connection structure of the fixed section and the telescopic section, the cooperation of the first adjustment hole and the second adjustment hole, and the locking and fixing of the high-strength alloy steel bolts, combined with the composite energy absorption design of the diamond-shaped collapse hole and the fluid bladder with the adaptable groove, the bonding and strengthening of the reinforcing liner and the fixed section, the clamping and shock absorption of the polyurethane elastic buffer pad, and the stable connection of the reinforcing mounting block and the rear crossbeam, the bracket achieves a comprehensive effect of multi-vehicle universal adaptability, collision energy gradient absorption, strong and stable connection structure, and effective vibration buffering. It not only improves installation flexibility and collision safety, but also enhances the structural load-bearing capacity and extends the service life of the bracket. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a structural diagram of the entire utility model; Figure 2 This is a structural diagram of the telescopic section of this utility model; Figure 3 This is a structural diagram of the fixed section of this utility model; Figure 4 This is a structural diagram of the fluid capsule of this utility model.

[0013] Legend: 1. Fixed section; 2. Diamond-shaped collapse hole; 3. Fluid bladder; 4. Reinforcing liner; 5. Polyurethane elastic buffer pad; 6. High-strength alloy steel bolt; 7. First adjustment hole; 8. Telescopic section; 9. Second adjustment hole; 10. Reinforcing mounting block; 11. Rear crossbeam. Detailed Implementation

[0014] This application provides a rear crossbeam mounting bracket for new energy vehicles, which effectively solves the technical problems faced by manufacturers in the production and R&D of rear crossbeam mounting brackets for new energy vehicles, such as long R&D cycles, high costs, single energy absorption structure making it difficult to achieve gradient protection, and easy loosening of connection structure affecting efficiency and causing quality problems. Example

[0015] like Figure 1 - Figure 4 As shown, the technical solution in this application embodiment aims to effectively address the technical problems faced by manufacturers in the production and R&D of rear crossbeam mounting brackets for new energy vehicles. These problems include long R&D cycles, high costs, difficulty in achieving gradient protection due to the single energy-absorbing structure, and easy loosening of the connection structure affecting performance and causing quality issues. The overall approach is as follows: In view of the problems existing in the prior art, this utility model provides a rear crossbeam mounting bracket for new energy vehicles, including a fixed section 1 and a telescopic section 8; The fixed section 1 is made of 6061 aluminum alloy sheet through a stamping process to form a hollow channel structure. One end of it is used to fix it to the rear longitudinal beam of the vehicle by bolts. The fixed section 1 is internally fitted with a reinforcing liner 4, which is made of carbon fiber plate and is tightly bonded to the inner wall of the fixed section 1 by a structural adhesive layer to enhance the torsional and bending strength of the fixed section 1. Multiple sets of first adjustment holes 7 are evenly opened along the length of the fixed section 1. The number of holes is set according to the vehicle model adaptation requirements and is used to cooperate with the second adjustment holes 9 of the telescopic section 8 to realize the X-axis fore-and-aft position adjustment of the vehicle.

[0016] The telescopic section 8 is also made of 6061 aluminum alloy sheet by stamping. Its structural dimensions are adapted to the hollow groove of the fixed section 1, and it can be nested into the fixed section 1 to form a sliding fit structure that can move relatively. A second adjustment hole 9 is opened on the telescopic section 8 at the position corresponding to the first adjustment hole 7, and is evenly distributed along the length direction. The connection between the fixed section 1 and the telescopic section 8 is realized by passing through the first adjustment hole 7 and the second adjustment hole 9 with a high-strength alloy steel bolt 6; the high-strength alloy steel bolt 6 is equipped with a lock nut to prevent it from loosening during vehicle operation.

[0017] Multiple rhomboid collapse holes 2 are drilled through the fixed section 1. The holes are evenly distributed circumferentially along the end face of the fixed section 1. The depth of the rhomboid collapse holes 2 is designed to be the same as the thickness of the inner wall of the fixed section 1, so as to guide orderly deformation during collision. Each rhomboid collapse hole 2 is embedded with a fluid bladder 3. The shape of the fluid bladder 3 is perfectly matched with the groove of the rhomboid collapse hole 2. Its outer surface is fixed to the inner wall of the rhomboid collapse hole 2 by a structural adhesive layer. The fluid bladder 3 is filled with a shear thickening fluid. The fluid is liquid when deformed at low speed and solidifies instantly due to shearing during high-speed collision, so as to achieve energy absorption by soft and hard gradients.

[0018] A reinforcing mounting block 10 is extended from the telescopic section 8. The reinforcing mounting block 10 is an integrated extension structure of the telescopic section 8 and is used to connect with the rear crossbeam 11 by bolts to ensure the installation strength of the rear crossbeam 11.

[0019] The polyurethane elastic buffer pad 5 is sandwiched between the nested mating surfaces of the fixed section 1 and the telescopic section 8. Its edge is interference-fitted with the inner wall of the fixed section 1, and its thickness is 5-8mm. The polyurethane elastic buffer pad 5 absorbs high-frequency vibrations in the initial stage of a collision, reducing the direct transmission of energy to the vehicle body.

[0020] Installation of reinforcing liner 4: Fix reinforcing liner 4 to the inner wall of fixed section 1 with structural adhesive layer, ensuring that the liner is completely attached to the inner wall, and let stand for the adhesive layer to cure.

[0021] Installation of fluid bladder 3: Embed fluid bladder 3 into the diamond-shaped collapse hole 2 of fixed section 1, and fix it to the inner wall of reinforcing liner 4 by structural adhesive layer to ensure that fluid bladder 3 is not loose.

[0022] Assembly of polyurethane elastic buffer pad 5: Place polyurethane elastic buffer pad 5 at the nesting mating surface of fixed section 1, insert telescopic section 8 into the hollow groove of fixed section 1, align the first adjustment hole 7 and the second adjustment hole 9, insert high-strength alloy steel bolt 6, adjust the position of telescopic section in fixed section 1 according to vehicle model requirements, and then tighten high-strength alloy steel bolt 6 and anti-loosening nut.

[0023] The reinforcing mounting block 10 is fixed to the rear crossbeam 11 with bolts, and the fixing section 1 is fixed to the rear longitudinal beam of the vehicle with bolts to complete the assembly of the entire bracket.

[0024] Working principle: When a car collides, the impact force on the rear crossbeam 11 is first transmitted to the telescopic section 8 through the reinforcing mounting block 10.

[0025] Initial low-speed impact: The polyurethane elastic buffer pad 5 absorbs high-frequency vibrations, while the rhomboid collapse hole 2 of the telescopic section 8 begins to deform slightly, and the shear-thickening fluid in the fluid bladder 3 becomes liquid, which helps to absorb some of the energy.

[0026] Mid-stage collision at medium speed: The rhomboid collapse hole 2 deforms further, guiding the orderly collapse of the expansion section 8; the shear-thickening fluid in the fluid bladder 3 gradually solidifies due to shearing action, enhancing its impact resistance.

[0027] In a high-speed, severe collision: the fluid bladder 3 is completely solidified and, together with the deformable structure of the diamond-shaped crumple hole 2, bears the impact force. At the same time, the reinforcing liner 4 in the fixed section 1 enhances the structural rigidity, ultimately dispersing and absorbing the collision energy, effectively protecting the vehicle body and battery pack.

[0028] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A mounting bracket for the rear crossbeam of a new energy vehicle, characterized in that: It includes a fixed section (1) and a telescopic section (8), wherein the fixed section (1) and the telescopic section (8) are nested and assembled to form a relatively movable connection structure; The fixed section (1) is provided with a first adjustment hole (7), and the telescopic section (8) is provided with a second adjustment hole (9) corresponding to the position of the first adjustment hole (7). High-strength alloy steel bolts (6) are inserted into the first adjustment hole (7) and the second adjustment hole (9). The fixed section (1) is provided with a diamond-shaped collapse hole (2), the diamond-shaped collapse hole (2) is provided with a fluid bladder (3), and the fixed section (1) is provided with a polyurethane elastic buffer pad (5).

2. The rear crossbeam mounting bracket for a new energy vehicle according to claim 1, characterized in that, The telescopic section (8) is provided with a reinforcing mounting block (10).

3. The rear crossbeam mounting bracket for a new energy vehicle according to claim 2, characterized in that, The reinforcing mounting block (10) is connected to a rear crossbeam (11).

4. The rear crossbeam mounting bracket for a new energy vehicle according to claim 3, characterized in that, The fixed section (1) is provided with a reinforcing liner (4).

5. A mounting bracket for the rear crossbeam of a new energy vehicle according to claim 4, characterized in that, The fluid bladder (3) is connected to the adhesive layer on the reinforcing liner (4).

6. A rear crossbeam mounting bracket for a new energy vehicle according to claim 5, characterized in that, The polyurethane elastic buffer pad (5) is sandwiched between the nested mating surfaces of the fixed section (1) and the telescopic section (8).

7. A rear crossbeam mounting bracket for a new energy vehicle according to claim 6, characterized in that, The reinforcing liner (4) is connected to the inner wall of the fixed section (1) by an adhesive layer.

8. A rear crossbeam mounting bracket for a new energy vehicle according to claim 7, characterized in that, The shape of the fluid bladder (3) is adapted to the groove shape of the rhomboid collapse hole (2).

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