CN220147110U - Bracket for mounting vehicle compressor and mounting structure for vehicle compressor - Google Patents

Abstract

The utility model relates to a bracket for mounting a vehicle compressor, which comprises a bracket body and at least three bushing assemblies, wherein the bushing assemblies are composed of an outer ring, a rubber body and an inner core, the bracket body is provided with a U-shaped integrated structure, the bushing assemblies are fixedly mounted on two side surfaces of the bracket body, and the round cross section of the rubber body is provided with a hollowed-out structure with a specific design. The utility model also relates to a mounting structure of a vehicle compressor, comprising a compressor, a frame and the bracket, wherein the compressor is arranged between two side surfaces of the bracket and is connected with the bracket at bushing assemblies of the side surfaces through fasteners, the bracket is connected with the frame through fasteners at mounting holes of the bottom surface, and the at least three bushing assemblies are arranged on two sides of the compressor. The utility model solves the technical problem of improving the vibration isolation performance of the compressor mounting structure.

Description

Bracket for mounting vehicle compressor and mounting structure for vehicle compressor

Technical field

The utility model relates to the field of vehicle technology, in particular to a bracket for installing a vehicle compressor and a mounting structure for the vehicle compressor.

Background technique

The vehicle's air conditioning compressor is usually directly hard-connected to the engine or motor housing through a bracket, and the vibration energy generated by the compressor is generally absorbed by the bracket assembly. In electric vehicles, the compressor is usually fixed on the frame or body beam. Due to the low-order vibration, noise and high-frequency vibration noise generated by the compressor itself during operation, the NVH problem (NoiseVibration

Harshness (acoustic vibration roughness), resulting in poor vehicle NVH performance and in-car ride comfort. With the continuous popularity of electric vehicles, people have higher and higher requirements for driving quality and vehicle NVH, and they have higher requirements for the vibration isolation performance of the compressor bracket.

Currently, there are basically two fixing methods for compressor installation points on the market: horizontal and vertical. For horizontal installation, a single-sided three-point bushing is generally used for fixation. In this case, if better vibration isolation rate and system mode and lower decoupled three-way stiffness value are required, conventional bushing design It is difficult to meet the requirements and has poor durability. In addition, the swing of the compressor will be larger. For vertical installation methods, adapter brackets are often required to be fixed to the body or motor, resulting in higher costs, and the bushings installed in this case require larger layout space.

Therefore, the present invention needs to propose a new technical solution to solve at least one of the above technical problems.

Utility model content

Based on the above technical background, the technical problem to be solved by this utility model is to improve the vibration isolation performance of the compressor installation structure and improve the noise reduction effect, especially when the compressor needs to be installed horizontally and the layout space is small.

To this end, the utility model proposes a bracket for installing a vehicle compressor. The bracket includes a bracket body and at least three bushing assemblies. The bushing assemblies are composed of an outer ring, a rubber body and an inner core, wherein, The bracket body has a U-shaped integrated structure. The bushing components are fixedly installed on both sides of the bracket body. The circular cross-section of the rubber body has a symmetrical hollow structure. The hollow structure includes a first A hollow part, two second hollow parts and two third hollow parts, wherein the first hollow part is a circular hole located in the center of the cross section and has two radially outward and opposite grooves, and the two second hollow parts The two grooves and the two second hollow parts extend along the same center line, and the two third hollow parts are located on both sides of the first hollow part. And extending parallel to the center line, the second hollow portion and the third hollow portion separate four connecting arms that are non-equidistantly distributed in cross section.

Preferably, the bracket has three bushing assemblies, respectively located at the corners of two sides of the bracket body.

Preferably, the three bushing assemblies are arranged in an offset-loaded three-point elastic connection when viewed from the side.

The compressor is mounted on the bracket via the three bushing assemblies, and preferably the bushing assembly remote from the center of mass of the compressor is rotated 90° relative to the other two bushing assemblies.

Preferably, along the axial direction of the bushing assembly, the ratio of the length of the inner core to the width of the outer ring is ≥ 2:1.

Preferably, the two side surfaces and the bottom surface of the bracket body are hollowed out respectively.

Preferably, one end of the inner core of the bushing assembly is provided with a limiting plate.

Preferably, at least three mounting holes are provided on the bottom surface of the bracket body.

The utility model also proposes a vehicle compressor installation structure, which includes a compressor, a vehicle frame and the aforementioned bracket for installing the vehicle compressor according to the utility model, wherein the compressor is arranged on two sides of the bracket. between the sides and with the bracket at the bushing assembly on the side through fasteners, and the bracket is connected with the frame at the mounting hole on the bottom surface through fasteners, wherein the at least three bushings Components are arranged on both sides of the compressor.

Preferably, one end of the inner core of the bushing assembly is abutted against the side of the bracket body with a limiting plate, and the other end faces the compressor.

The utility model has the advantages of improving the vibration isolation performance of the compressor installation structure at a low cost, making the vehicle compressor swing less when running, reducing the vibration transmitted to the vehicle body, thereby reducing the noise inside and outside the passenger compartment, and ensuring that the vehicle With better ride comfort and vehicle NVH performance.

Description of the drawings

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Corresponding parts in the different figures are identified with the same reference characters. in,

Figure 1 shows a perspective view of an embodiment of a bracket for mounting a vehicle compressor according to the present invention.

FIG. 2 shows a side view of the bracket of FIG. 1 .

Figure 3 shows an installation structural diagram of the vehicle compressor according to the present invention.

Figures 4 and 5 illustrate two bushing hollow structures designed in the prior art in cross-sectional views.

Figure 6 shows a cross-sectional view of the bushing hollow structure designed according to the present invention.

Figure 7 shows a side view of a bushing assembly used in the prior art.

Figure 8 shows a side view of a bushing assembly according to the invention.

Explanation of reference signs

1 stand

2 frame

3 compressor

1.1 Bracket body

1.2 Bushing assembly

1.10 Bottom

1.11 First side

1.12 Second side

1.13 Mounting holes

1.21 outer ring

1.22 Rubber body

1.23 Inner core

1.24 Limit plate

1.220 connecting arm

1.221 First hollow part

1.222 Second hollow part

1.223 The third hollow part

X center line

A center of mass

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the present utility model are clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model. , not all examples. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present utility model.

Figures 1 and 2 show an embodiment of a bracket 1 for mounting a vehicle compressor according to the present invention in a perspective view and a side view respectively. According to the figure, the bracket 1 includes a bracket body 1.1 and three bushing assemblies 1.2. The bracket body 1.1 is a U-shaped integrated structure made of cast aluminum alloy, which includes two sides 1.11, 1.12 and a bottom surface 1.10. The two side surfaces 1.11, 1.12 and the bottom surface 1.10 are hollowed out respectively to form a frame structure and reduce the weight of the bracket. Nine mounting holes 1.13 are provided on the bottom surface 1.10 of the bracket body 1.1 for connecting to the motor vehicle frame. A bushing assembly 1.2 is installed at each of the two corner positions of the first side 1.11 of the bracket body 1.1, and a third bushing assembly 1.2 is installed at the corner position of the second side 1.12. These three bushing assemblies are used for installation. vehicle compressor and forms the point of application of the force. It can be seen from the side view of Figure 2 that the three bushing assemblies 1.2 form an offset-loaded three-point elastic connection arrangement. Point A in the figure is the center of mass of the compressor installed in the bracket.

FIG. 3 shows a perspective view of the installation structure of the vehicle compressor installed on the vehicle frame through the bracket shown in FIGS. 1 and 2 . As shown in the figure, the compressor 3 is arranged in the space between the first side 1.11 and the second side 1.12 of the bracket 1, so that the three bushing assemblies 1.2 of the bracket 1 are arranged on both sides of the compressor 3. The compressor 3 is detachably connected to the bracket 1 at the three bushing assemblies 1.2 by fasteners such as bolts and nuts. The arrangement of the bushing components on both sides of the bracket achieves more reasonable modal decoupling of the compressor installation point, ensuring better vehicle NVH performance. Viewed from the side, the triangular distribution structure of the three bushing assemblies further strengthens the firmness and reliability of the fixed structure of the compressor. In addition, the bracket 1 is detachably connected to the frame 2 of the motor vehicle through fasteners such as bolts and nuts at a plurality of mounting holes 1.13 on the bottom surface 1.10. During the installation process, first install the bracket 1 to the frame 2, and then install the compressor 3 into the bracket 1.

Figures 6 and 8 show details of the bushing assembly 1.2 according to the invention in cross-section and side view respectively. As shown in the figure, the bushing assembly 1.2 consists of an outer ring 1.21, an inner core 1.23 and a rubber body 1.22 in the middle. The outer ring 1.21 is made of plastic, such as nylon, the inner core 1.23 is an inner tube extruded from aluminum, and the elastic rubber body 1.22 is combined with the outer ring 1.21 and the inner core 1.23 through vulcanization, so that the three are integrally installed. In the corresponding bushing position of bracket 1. The use of elastic bushing components can effectively reduce vibration generated during compressor operation.

As shown in Figure 6, the circular cross-section of the rubber body 1.22 has a symmetrical hollow structure, which has a special design compared to the hollow structure of the bushing in the prior art shown in Figures 4 and 5. Wherein, the hollow structure includes a first hollow part 1.221, two second hollow parts 1.222 and two third hollow parts 1.223. The first hollow part 1.221 is a circular hole located in the center of the cross section and has two radially outward and opposite grooves on the center line X passing through the center of the circle. The two second hollow portions 1.222 are respectively located radially outside the two grooves on the center line X. Two third hollow portions 1.223 extend parallel to the center line X and are located on both sides of the first hollow portion 1.221. The second hollow part 1.222 and the third hollow part 1.223 separate four connecting arms 1.220 to connect the inner ring and the outer ring of the rubber body 1.22 to each other. These four connecting arms are non-equidistantly distributed on the cross section of the rubber body. Therefore, the center line X forms the symmetry line of the hollow structure. The extension directions of the two grooves and the extension directions of the two third hollow portions 1.223 are both parallel to the symmetry line. The installation angle of the bushing assembly can be adjusted by rotating the symmetry line within the mounting plane of the bushing assembly. According to the specially designed hollow structure of the present invention, the bushing assembly has improved stiffness and meets the low mode requirements of the system, thereby improving the NVH performance of the car and ensuring driving comfort.

In addition, due to the eccentric load of the center of mass, the bushing assembly far away from the center of mass A of the compressor rotates 90° relative to the other two bushing assemblies. As shown in Figure 2, the symmetry line of the hollow structure of the two bushing components on the left extends vertically, and the symmetry line of the hollow structure of the bushing component on the right is rotated 90° and extends horizontally. As a result, the force is more evenly distributed and the system has a further improved stiffness ratio.

As shown in Figure 8, the inner core 1.23 of the bushing assembly 1.2 extends along the axial direction of the rotation axis, and its extension length is significantly longer than the inner core length of a bushing assembly used in the prior art shown in Figure 7. Preferably, along the axial direction, the ratio of the length of the inner core 1.23 to the width of the outer ring 1.21 is ≥2:1. The figure also shows that one end of the inner core 1.23 close to the outer ring 1.21 is provided with a protruding limiting plate 1.24, through which the bushing assembly is pressed against the side of the bracket body 1.1 to fix the position; the inner core 1.23 The other end protrudes axially from the outer ring 1.21 and faces the compressor 3. The extended inner core allows the installation of a narrower compressor and makes the gap between the bracket and the compressor larger, thus meeting the boundary requirements and effectively preventing the noise caused by the collision between the compressor and the bracket during operation.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

In some variants, more than three bushing assemblies are arranged on both sides of the bracket.

In some variations, the mounting angles of multiple bushing assemblies relative to each other can be adjusted according to the application, and are not limited to the aforementioned situation where a single bushing assembly is rotated 90°.

Claims (10)

1. A bracket (1) for installing a vehicle compressor. The bracket (1) includes a bracket body (1.1) and at least three bushing assemblies (1.2). The bushing assemblies (1.2) are composed of an outer ring (1.21), a rubber body (1.22) and an inner core (1.23). It is characterized in that the bracket body (1.1) has a U-shaped integrated structure, and the bushing assembly (1.2) is fixedly installed on the bracket body. (1.1) on both sides, the circular cross-section of the rubber body (1.22) has a symmetrical hollow structure, the hollow structure includes a first hollow part (1.221), two second hollow parts (1.222) and two A third hollow part (1.223), wherein the first hollow part (1.221) is a circular hole located in the center of the cross section and has two radially outward and opposite grooves, and the two second hollow parts (1.222) are respectively Located radially outside the two grooves, the two grooves and the two second hollows extend along the same center line (X), and the two third hollows (1.223) are located on the first hollow Both sides of the part (1.221) extend parallel to the center line (X), and the second hollow part (1.222) and the third hollow part (1.223) separate four connections that are non-equidistantly distributed in the cross section. Arm(1.220). 2. The bracket (1) for mounting a vehicle compressor according to claim 1, characterized in that the bracket (1) has three bushing assemblies (1.2), respectively located on the bracket body (1.1). Corner locations on both sides. 3. The bracket (1) for mounting a vehicle compressor according to claim 2, characterized in that the three bushing assemblies (1.2) are arranged in an offset-loaded three-point elastic connection when viewed from the side. 4. The bracket (1) for mounting a vehicle compressor according to claim 3, characterized in that the compressor is mounted on the bracket (1) through the three bushing assemblies (1.2) and away from the bracket (1). The bushing assembly at the compressor's center of mass (A) is rotated 90° relative to the other two bushing assemblies. 5. The bracket (1) for mounting a vehicle compressor according to any one of claims 1 to 4, characterized in that, along the axial direction of the bushing assembly (1.2), the inner core (1.23 ) and the ratio of the length of the outer ring (1.21) to the width is ≥ 2:1. 6. The bracket (1) for mounting a vehicle compressor according to any one of claims 1 to 4, characterized in that the two side surfaces and the bottom surface of the bracket body (1.1) are hollowed out respectively. 7. The bracket (1) for installing a vehicle compressor according to any one of claims 1 to 4, characterized in that one end of the inner core (1.23) of the bushing assembly (1.2) is provided with a limiter Board(1.24). 8. The bracket (1) for mounting a vehicle compressor according to any one of claims 1 to 4, characterized in that at least three mounting brackets are provided on the bottom surface (1.10) of the bracket body (1.1). hole(1.13). 9. A mounting structure for a vehicle compressor, including a compressor (3), a frame (2) and a bracket (1) for installing a vehicle compressor as claimed in any one of claims 1 to 8, wherein It is characterized in that the compressor (3) is arranged between two sides of the bracket (1) and is connected to the bracket (1) at the bushing assembly (1.2) on the side through fasteners. The bracket (1) is connected to the frame (2) through fasteners at the mounting holes (1.13) on the bottom surface (1.10), wherein the at least three bushing assemblies (1.2) are arranged on the compressor ( 3) on both sides. 10. The vehicle compressor installation structure according to claim 9, characterized in that the inner core (1.23) of the bushing assembly (1.2) is abutted against the bracket body (1.1) with a limiting plate (1.24) at one end. ), the other end faces the compressor (3).