Lightweight bracket for air conditioner compressor of electric automobile

Abstract

A lightweight support for an air conditioner compressor of an electric automobile comprises a support body formed through injection molding, a first connecting structure arranged on the support body and used for being connected with the compressor, and a second connecting structure used for being connected with an auxiliary frame. Seen from the vertical direction, the whole support body is in a K shape, and the second connecting structure is arranged on the plane where the support body is located in the horizontal direction; seen from the horizontal direction, the whole bracket body is L-shaped, and the first connecting structure is arranged on the surface of the bracket body in the vertical direction. The air conditioner compressor is directly installed on the auxiliary frame through the installation support, the problem that installation and arrangement are difficult is solved, the advantage of high plasticity of the plastic forming technology is fully utilized, and the requirement that installation can be achieved only through a plurality of metal supports originally is integrally designed into one plastic support to meet the installation requirement. The space utilization rate, the installation convenience, the structural rationality and the like are improved.

Description

Technical Field

[0001] The utility model relates to a mounting bracket, in particular to a lightweight bracket for an electric vehicle air-conditioning compressor. Background Art

[0002] Currently, most automotive air conditioning compressors are mounted using metal brackets. However, with the increasing number of vehicles and the impact of vehicle emissions on the environment, electrification of vehicles is aligning with the broader trend. Consequently, lightweighting of various automotive components is being considered to reduce energy consumption. The following optimization issues need to be addressed: ① Consider replacing raw metal with lightweight materials to address weight issues; ② While fuel-powered vehicles have relatively more chassis components, air conditioning compressors can be mounted on nearby components using simpler adapter brackets. However, pure electric vehicles have fewer chassis components and more demanding installation conditions, placing higher demands on the mounting bracket structure. Utility Model Content

[0003] Aiming at the problems faced by the current compressor mounting bracket on electric vehicles, the utility model proposes a lightweight bracket for the air-conditioning compressor of an electric vehicle. The bracket is made of plastic material and the compressor is installed by mounting the bracket on the sub-frame, so the weight is lower and the structure is more compact.

[0004] The technical means employed by this utility model to solve the aforementioned problems are: a lightweight bracket for an electric vehicle air-conditioning compressor, comprising an injection-molded bracket body, a first connecting structure disposed on the bracket body for connecting to the compressor, and a second connecting structure disposed on the bracket body for connecting to the subframe. The bracket body is K-shaped when viewed vertically, with the second connecting structure disposed on the horizontal surface of the bracket body; and L-shaped when viewed horizontally, with the first connecting structure disposed on the vertical surface of the bracket body. The entire bracket body is mounted horizontally to the subframe, while the compressor is mounted vertically to the bracket body.

[0005] Furthermore, the first connection structure is a small rubber bushing that is interference-fitted on the bracket body, and the small rubber bushing is arranged in a manner such that its axial direction is along the horizontal direction.

[0006] Furthermore, there are three small rubber bushings arranged in an acute-angle triangle.

[0007] Furthermore, the second connection structure is a large rubber bushing interference-fitted on the bracket body and a metal bushing embedded in the bracket body during injection molding, and the large rubber bushing and the metal bushing are arranged with their axes along the vertical direction.

[0008] Furthermore, there are three large rubber bushings and one metal bushing, which are respectively arranged at the four ends of the K-shaped structure of the bracket body.

[0009] Furthermore, the small rubber bushing and the large rubber bushing both include a metal core shaft and a plastic outer sleeve which are integrally formed by vulcanization of rubber.

[0010] Furthermore, one end of the small rubber bushing and the large rubber bushing is provided with a boss protruding toward the outside, and the other end is provided with a stop buckle protruding toward the outside. When the small rubber bushing and the large rubber bushing are press-fitted into the bracket body, the boss and the stop buckle cooperate to prevent them from falling off.

[0011] Furthermore, steps are provided at both ends of the metal bushing, and notches are provided on the steps at both ends. The steps prevent axial falling off, and the notches prevent radial rotation.

[0012] Furthermore, the bracket body is provided with reinforcing ribs, and the arrangement direction of the reinforcing ribs on the bottom surface thereof is along the movement direction of the vehicle.

[0013] Furthermore, a hollow structure is provided on the surface of the vertical portion of the bracket body, which reduces weight and dissipates heat.

[0014] The beneficial effects of the utility model are:

[0015] 1. This utility model directly mounts the air conditioning compressor to the subframe via a mounting bracket, resolving installation difficulties. Leveraging the high plasticity of plastic molding, this design eliminates the need for multiple metal brackets, integrating them into a single plastic bracket. This improves space utilization, installation convenience, and structural rationality. Compared to metal mounting brackets, this plastic mounting bracket offers advantages in energy conservation and emission reduction, manufacturing costs, and process complexity.

[0016] 2. The utility model adopts engineering plastic material, which has better damping characteristics, can better suppress the vibration transmission of the compressor's own working conditions, and improve the NVH characteristics; the utility model adopts two-stage vibration isolation, and rubber bushings are added to the installation positions of the air-conditioning compressor and the subframe respectively, with obvious vibration isolation effect, which is beneficial to reducing vibration transmission, reducing vibration noise, and improving the durability of the bracket.

[0017] 3. The bracket body of the present invention is designed in a "K" shape, which greatly simplifies the structure while meeting the installation and space layout requirements, achieves a weight reduction effect, meets lightweight requirements, and provides sufficient structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0019] Figure 2 This is a schematic diagram of the structure of the bracket body according to Example 1;

[0020] Figure 3This is a schematic diagram of the arrangement of the reinforcing ribs on the bracket body in accordance with the first embodiment;

[0021] Figure 4 This is a schematic diagram of the hollow structure arrangement on the bracket body in Example 1;

[0022] Figure 5 This is a schematic diagram of the rubber bushing structure in Example 1;

[0023] Figure 6 This is a schematic diagram of the structure of a small rubber bushing in Example 1;

[0024] Figure 7 This is a schematic diagram of the metal bushing structure in Example 1;

[0025] Figure 8 This is a structural schematic diagram of an embodiment in which a large rubber bushing or a small rubber bushing is pressed into an assembly hole;

[0026] In the figure: 1. Bracket body, 11. Reinforcement rib, 12. Hollow structure, 13. Assembly hole, 2. Large rubber bushing, 21. Metal core shaft, 22. Rubber, 23. Plastic jacket, 3. Small rubber bushing, 31. Boss, 32. Stop buckle, 4. Metal bushing, 41. Step, 42. Notch. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the accompanying drawings. Example 1

[0028] A lightweight bracket for an electric vehicle air-conditioning compressor, such as Figure 1 As shown, the whole includes a bracket body 1 and a large rubber bushing 2, a small rubber bushing 3 and a metal bushing 4 arranged on the bracket body 1, wherein the large rubber bushing 2 and the metal bushing 4 are used to install the bracket body 1 on the subframe, and the small rubber bushing 3 is used to install the compressor on the bracket body 1.

[0029] like Figure 1-3As shown, when looking down at the bracket body 1 from a vertical direction, it is a K-shaped structure. Three large rubber bushings 2 and one metal bushing 4 are respectively located at the four edges of the K-shaped structure. They are installed on the subframe through these four edges. The installation space at the metal bushing 4 is very small, so a smaller metal bushing 4 is used. The installation space at the three large rubber bushings 2 is larger, so a larger large rubber bushing 2 is used. The bracket body 1 is made of engineering plastic and is formed by injection molding. The bracket body 1 is provided with an assembly hole 13. The large rubber bushing 2 is interference fit in the assembly hole 13, and the metal bushing 4 is a metal embedded part. When manufacturing the bracket body 1, the metal bushing 4 is placed in the mold and is injection molded integrally with the bracket body 1. The axial directions of the large rubber bushing 2 and the metal bushing 4 are both vertical, and the bracket body 1 is installed on the subframe in the horizontal direction.

[0030] like Figure 1 and Figure 2 As shown, when looking at the bracket body 1 from the horizontal direction, it is L-shaped as a whole. Three small rubber bushings 3 are interference-pressed into the assembly holes 13 on the vertical surface of the bracket body 1, and the three small rubber bushings 3 are formed as an acute triangle as a whole, which is close to an equilateral triangle, so as to distribute the weight of the compressor as evenly as possible to the three small rubber bushings 3. The axial directions of the small rubber bushings 3 are all horizontal, and the compressor is installed on the bracket body 1 in the vertical direction. The vertical structural shape of the bracket body 1 fits the compressor housing as much as possible while meeting the installation requirements, and plays a role in supporting and protecting the air-conditioning compressor. The bracket body 1 uses its L-shaped structure to solve the problem of installation in two mutually perpendicular planes caused by the compressor mounting point being in the vertical plane and the subframe mounting point being in the horizontal plane, thereby reducing the number of brackets.

[0031] like Figure 3 As shown, the bracket body 1 is also provided with reinforcing ribs 11, and the direction of the reinforcing ribs 11 on the horizontal surface is distributed along the direction of the car's movement, and the corner positions are designed to be large rounded corners, which can reduce the wind resistance of the air-conditioning compressor bracket, improve the flatness of the vehicle chassis, and indirectly reduce the energy consumption of the car.

[0032] like Figure 4 As shown, a plurality of hollow structures 12 are provided on the vertical facade of the bracket body 1. On the premise of ensuring the strength of the bracket body 1, it is conducive to air flow, improves the heat dissipation effect of the air-conditioning compressor, reduces wind resistance, and saves the use of raw materials of the air-conditioning compressor bracket body 1, meeting the lightweight requirements.

[0033] like Figure 5 and Figure 6As shown, both the large rubber bushing 2 and the small rubber bushing 3 are formed by vulcanizing the metal core shaft 21 and the plastic jacket 23 into an integral structure with rubber 22. The plastic jacket 23 is in contact with the plastic bracket body 1. The rubber 22 in the middle realizes the function of vibration reduction and noise reduction. The large rubber bushing 2 reduces the transmission of noise and vibration between the bracket body 1 and the subframe, and the small rubber bushing 2 reduces the transmission of noise and vibration between the compressor and the bracket body 1, achieving a double vibration isolation effect. In addition, a boss 31 protruding toward the outer side is provided at one end of the large rubber bushing 2 and the small rubber bushing 3, and a stop buckle 32 protruding toward the outer side is provided at the other end, and the top of the stop buckle 32 is an inclined surface. As shown Figure 8 As shown, when the large rubber bushing 2 and the small rubber bushing 3 are interference fit into the assembly hole 13 of the bracket body 1, the boss 31 and the stop buckle 32 are respectively located at both ends of the assembly hole 13 to prevent the large rubber bushing 2 or the small rubber bushing 3 from falling off.

[0034] Because the space for the compressor in a vehicle is very limited, a large rubber bushing 2 with a high load capacity is used to mount the bracket body 1 to the subframe, supporting the weight of the bracket body 1 and the compressor. A small rubber bushing 3 with a lower load capacity is used to mount the compressor to the bracket body 1, supporting the weight of the compressor. Of course, if the installation space is sufficient, a rubber bushing with a higher load capacity can be used.

[0035] like Figure 7 As shown, both ends of the metal bushing 4 are provided with steps 41 protruding outward, and notches 42 are provided on the steps 41 at both ends. During injection molding, the plastic fills the space between the two steps 41 and fills into the notch 42, ensuring that the metal bushing 4 will neither fall off axially nor rotate radially.

[0036] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Technicians in the relevant technical field can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of protection of the present invention, and the scope of protection of the present invention should be defined by the claims.

Claims

1. A lightweight bracket for an electric vehicle air-conditioning compressor, characterized by: It includes an injection-molded bracket body and a first connecting structure arranged on the bracket body for connecting to the compressor and a second connecting structure for connecting to the subframe; and when viewed from the vertical direction, the bracket body is K-shaped as a whole, and the second connecting structure is arranged on the horizontal surface of the bracket body; when viewed from the horizontal direction, the bracket body is L-shaped as a whole, and the first connecting structure is arranged on the vertical surface of the bracket body.

2. The lightweight bracket for an electric vehicle air-conditioning compressor according to claim 1, characterized in that: The first connection structure is a small rubber bushing that is interference-fitted on the bracket body, and the small rubber bushing is arranged in a manner such that its axial direction is along the horizontal direction.

3. The lightweight bracket for the electric vehicle air-conditioning compressor according to claim 2, characterized in that: There are three small rubber bushings arranged in an acute triangle.

4. The lightweight bracket for an electric vehicle air-conditioning compressor according to claim 2, characterized in that: The second connection structure is a large rubber bushing interference-fitted on the bracket body and a metal bushing embedded in the bracket body during injection molding, and the large rubber bushing and the metal bushing are arranged in a vertical direction with their axial directions.

5. The lightweight bracket for the electric vehicle air-conditioning compressor according to claim 4, characterized in that: There are three large rubber bushings and one metal bushing, which are respectively arranged at the four ends of the K-shaped structure of the bracket body.

6. The lightweight bracket for the electric vehicle air-conditioning compressor according to claim 4, characterized in that: The small rubber bushing and the large rubber bushing both include a metal core shaft and a plastic outer sleeve which are integrally formed by vulcanization of rubber.

7. The lightweight bracket for the electric vehicle air-conditioning compressor according to claim 6, characterized in that: One end of the small rubber bushing and the large rubber bushing is provided with a boss protruding toward the outer side surface, and the other end is provided with a stop buckle protruding toward the outer side surface.

8. The lightweight bracket for the electric vehicle air-conditioning compressor according to claim 7, characterized in that: Both ends of the metal bushing are provided with steps, and both ends of the steps are provided with notches.

9. The lightweight bracket for an electric vehicle air-conditioning compressor according to claim 1, characterized in that: The bracket body is provided with reinforcing ribs, and the arrangement direction of the reinforcing ribs on the bottom surface is along the movement direction of the car.

10. The lightweight bracket for an electric vehicle air-conditioning compressor according to claim 1, characterized in that: A hollow structure is provided on the surface of the vertical portion of the bracket body.

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