CN220147110U - Bracket for mounting vehicle compressor and mounting structure of 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 of vehicle compressor

Technical Field

The utility model relates to the technical field of vehicles, in particular to a bracket for installing a vehicle compressor and an installation structure of the vehicle compressor.

Background

Air conditioning compressors for vehicles are typically hard-wired directly to the engine or motor housing via brackets, and the vibrational energy generated by the compressor is typically absorbed by the bracket assembly. In electric vehicles, a compressor is usually fixed to a frame or a vehicle body cross member, and NVH problems (Noise Vibration) due to low-order Vibration, noise, and high-frequency Vibration Noise generated when the compressor itself is operated

Harshness, acoustic vibration roughness), resulting in poor vehicle NVH performance and vehicle ride comfort. With the continuous popularization of electric vehicles, the requirements of people on driving quality and NVH of the whole vehicle are higher and higher, and the requirements on vibration isolation performance of a compressor bracket are higher.

The mounting points of the existing compressors on the market basically have two fixing modes, namely horizontal fixing mode and vertical fixing mode. For horizontal mounting, a single-sided three-point bushing is typically used for fixation, in which case if better vibration isolation and system mode and lower decoupling three-way stiffness values are required, conventional bushing designs are difficult to achieve and durability are poor, and in addition compressor wobble can be large. For vertical mounting, a transfer bracket is often required to secure to the vehicle body or motor, resulting in higher costs, and in such a case the bushing to be mounted requires more space for arrangement.

Accordingly, the present utility model needs to propose a new solution to at least one of the above technical problems.

Disclosure of Invention

Based on the technical background, the utility model aims to solve the technical problems of improving the vibration isolation performance of the mounting structure of the compressor and improving the noise reduction effect, especially under the condition that the compressor needs to be horizontally mounted and the arrangement space is smaller.

Therefore, the utility model provides a bracket for installing a vehicle compressor, the bracket comprises a bracket body and at least three bushing components, the bushing components are composed of an outer ring, a rubber body and an inner core, wherein the bracket body is provided with a U-shaped integrated structure, the bushing components are fixedly arranged on two sides of the bracket body, the circular cross section of the rubber body is provided with a symmetrical hollow structure, the hollow structure comprises a first hollow part, two second hollow parts and two third hollow parts, the first hollow part is a round hole positioned in the center of the cross section and is provided with two grooves which are radially outwards and oppositely arranged, the two grooves and the two second hollow parts are respectively positioned on the radial outer sides of the two grooves, the two third hollow parts are positioned on two sides of the first hollow part and extend in parallel relative to the center line, and the second hollow parts and the third hollow parts are separated by four connecting arms which are not equidistantly distributed on the cross section.

Preferably, the bracket has three bushing assemblies respectively located at corner positions of both sides of the bracket body.

Preferably, the three bushing assemblies are in a biased three-point resilient connection arrangement as seen from the side.

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

Preferably, the ratio of the length of the inner core to the width of the outer ring is greater than or equal to 2:1.

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

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

Preferably, at least three mounting holes are formed in the bottom surface of the bracket body.

The utility model also provides a mounting structure of a vehicle compressor, comprising the compressor, a frame and the bracket for mounting the vehicle compressor, 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.

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

The utility model has the advantages that: the vibration isolation performance of the compressor mounting structure is improved with lower cost, so that the swing of the vehicle compressor is smaller when the vehicle compressor is in operation, and the vibration transmitted to the vehicle body is reduced, so that the noise inside and outside the passenger cabin is reduced, and the vehicle is ensured to have better riding comfort and vehicle NVH performance.

Drawings

Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Corresponding parts in the different figures are identified with the same reference numerals. Wherein,

fig. 1 shows a perspective view of one embodiment of a bracket for mounting a compressor of a vehicle according to the present utility model.

Fig. 2 shows a side view of the stent of fig. 1.

Fig. 3 shows an installation structure of a compressor for a vehicle according to the present utility model.

Fig. 4 and 5 show in cross-section two bushing hollow-out structures of the prior art design.

Fig. 6 shows a hollow out construction of a bushing according to the utility model in a cross-sectional view.

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

Fig. 8 shows a side view of a bushing assembly according to the utility model.

Description of the reference numerals

1. Support frame

2. Frame of bicycle

3. Compressor with a compressor body having a rotor with a rotor shaft

1.1 Bracket body

1.2 Bushing assembly

1.10 Bottom surface

1.11 First side surface

1.12 Second side surface

1.13 Mounting hole

1.21 Outer ring

1.22 Rubber body

1.23 Inner core

1.24 Limiting plate

1.220 Connecting arm

1.221 First hollowed-out part

1.222 Second hollowed-out part

1.223 Third hollowed-out part

X center line

A centroid

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, the following description will clearly and completely describe the technical solutions of the present utility model in conjunction with embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Fig. 1 and 2 show an embodiment of a bracket 1 according to the utility model for mounting a compressor of a vehicle in a perspective view and a side view, respectively. According to the illustration, the bracket 1 comprises a bracket body 1.1 and three bushing assemblies 1.2. The bracket body 1.1 is a U-shaped integral structure made of cast aluminium alloy, comprising two side faces 1.11, 1.12 and one bottom face 1.10. The two side surfaces 1.11, 1.12 and the bottom surface 1.10 are respectively hollowed out, so that a frame structure is formed, and the weight of the bracket is reduced. Nine mounting holes 1.13 are provided on the bottom 1.10 of the bracket body 1.1 for connecting to the vehicle frame. One bushing assembly 1.2 is mounted at each of the two corner locations of the first side 1.11 of the bracket body 1.1, and a third bushing assembly 1.2 is mounted at the corner location of the second side 1.12, which are used for mounting the vehicle compressor and forming a point of action of the force. As can be seen from the side view of fig. 2, the three bushing assemblies 1.2 form a bias-load three-point resilient connection arrangement, point a in the figure being the centroid position of the compressor mounted in the bracket.

Fig. 3 shows in perspective view the mounting structure of the vehicle compressor to the frame by means of the bracket shown in fig. 1 and 2. As shown, 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 three bushing assemblies 1.2 by means of fasteners, such as bolts and nuts. The arrangement of the bushing components on two sides of the support achieves more reasonable modal decoupling of the mounting points of the compressor, and better NVH performance of the whole vehicle is guaranteed. The triangular distribution of the three bushing assemblies from the side further enhances the robustness and reliability of the compressor mounting structure. In addition, the bracket 1 is detachably connected to the frame 2 of the motor vehicle at a plurality of mounting holes 1.13 of the bottom surface 1.10 by means of fasteners, such as bolts and nuts. In the mounting process, the bracket 1 is mounted on the frame 2, and then the compressor 3 is mounted in the bracket 1.

Fig. 6 and 8 show a detail view of the bushing assembly 1.2 according to the utility model in a cross-sectional view and a side view, respectively. As shown, the bushing assembly 1.2 is comprised of an outer race 1.21, an inner core 1.23 and a centrally located rubber body 1.22. Wherein 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 rubber body 1.22 having elasticity is bonded with the outer ring 1.21 and the inner core 1.23 by vulcanization, so that the three are integrally installed in the corresponding bushing positions of the bracket 1. The elastic bushing assembly can effectively reduce vibration generated in the operation process of the compressor.

As shown in fig. 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 fig. 4 and 5. The hollow structure comprises a first hollow part 1.221, two second hollow parts 1.222 and two third hollow parts 1.223. The first hollow-out part 1.221 is a round hole positioned at the center of the cross section and is provided with two grooves which are radially outwards arranged on a center line X passing through the center of the circle and are opposite. The two second hollowed-out parts 1.222 are respectively positioned on the radial outer sides of the two grooves on the central line X. The two third hollowed-out parts 1.223 extend in parallel relative to the central line X and are positioned at two sides of the first hollowed-out part 1.221. The second hollow part 1.222 and the third hollow part 1.223 are separated into four connecting arms 1.220, and the inner ring and the outer ring of the rubber body 1.22 are connected with each other. The four connecting arms are not equidistantly distributed on the cross section of the rubber body. Therefore, the central line X forms a symmetrical line of the hollowed-out structure. The extending directions of the two grooves and the extending directions of the two third hollowed-out parts 1.223 are parallel to the symmetrical line. The mounting angle of the bushing assembly can be adjusted by rotation of the symmetry line in the bushing assembly mounting plane. According to the special designed hollow structure, the bushing assembly has improved rigidity, and the low-mode requirement of the system is met, so that the NVH performance of the automobile is improved, and the driving comfort is ensured.

In addition, the liner assembly distal to the compressor centroid a is rotated 90 ° relative to the other two liner assemblies due to the centroid offset load. As shown in FIG. 2, the symmetry line of the hollow structure of the two bushing assemblies on the left extends vertically, and the symmetry line of the hollow structure of one bushing assembly on the right rotates 90 degrees to extend horizontally. Thereby making the force more uniform and the system has a further improved stiffness ratio.

As shown in fig. 8, the inner core 1.23 of the bushing assembly 1.2 extends in the axial direction of the rotational axis over a significantly longer length than the inner core of one of the bushing assemblies used in the prior art shown in fig. 7. Preferably, the ratio of the length of the inner core 1.23 to the width of the outer ring 1.21 is ≡2:1. also shown is that the end of the inner core 1.23 near the outer ring 1.21 is provided with a protruding limiting plate 1.24, and the bushing assembly is abutted against the side surface of the bracket body 1.1 through the limiting plate 1.24 so as to fix the position; the other end of the inner core 1.23 protrudes axially beyond the outer ring 1.21 and towards the compressor 3. The narrow compressor is allowed to be installed through the prolonged inner core, and the gap between the support and the compressor is larger, so that the boundary requirement is met, and noise generated by collision between the support and the compressor in operation is effectively prevented.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

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

In some variants, the plurality of bushing assemblies can be adjusted with respect to each other in terms of their mounting angle, not limited to the aforementioned case of a single bushing assembly rotated by 90 °.

Claims (10)

1. Support (1) for installing vehicle compressor, support (1) include support body (1.1) and at least three bush subassembly (1.2), bush subassembly (1.2) are by outer lane (1.21), rubber body (1.22) and inner core (1.23) constitution, a serial communication port, support body (1.1) have U-shaped integral structure, bush subassembly (1.2) fixed mounting is in two sides of support body (1.1), the circular cross section of rubber body (1.22) has symmetrical hollow structure, hollow structure includes first fretwork portion (1.221), two second fretwork portions (1.222) and two third fretwork portions (1.223), and wherein first fretwork portion (1.221) are the round hole that is located the cross section center and have two radially outwards and the recess of opposition, and two second fretwork portions (1.222) are located respectively the radial outside of two recesses, two recesses and two second fretwork portions are in two parallel with each other with two first fretwork portion (1.223) and two second fretwork portion (1.223) extend in cross section (1.223) and three fretwork portion (1.223) are located respectively.

2. Bracket (1) for mounting a vehicle compressor according to claim 1, characterized in that the bracket (1) has three bushing assemblies (1.2) located at corner positions of two sides of the bracket body (1.1), respectively.

3. Bracket (1) for mounting a vehicle compressor according to claim 2, characterized in that the three bushing assemblies (1.2) are in a bias-load three-point resilient connection arrangement seen from the side.

4. A bracket (1) for mounting a compressor of a vehicle according to claim 3, characterized in that the compressor is mounted on the bracket (1) by means of the three bushing assemblies (1.2) and that the bushing assemblies distant from the centre of mass (a) of the compressor are rotated 90 ° with respect to the other two bushing assemblies.

5. Bracket (1) for mounting a vehicle compressor according to any of claims 1 to 4, characterized in that the ratio of the length of the inner core (1.23) to the width of the outer ring (1.21) in the axial direction of the bushing assembly (1.2) is ≡2:1.

6. bracket (1) for mounting a vehicle compressor according to any of claims 1 to 4, characterized in that the two sides and the bottom of the bracket body (1.1) are hollowed out respectively.

7. Bracket (1) for mounting a vehicle compressor according to any 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 limiting plate (1.24).

8. Bracket (1) for mounting a vehicle compressor according to any of claims 1 to 4, characterized in that at least three mounting holes (1.13) are provided on the bottom surface (1.10) of the bracket body (1.1).

9. Mounting structure of a vehicle compressor, comprising a compressor (3), a frame (2) and a bracket (1) for mounting a vehicle compressor according to any of claims 1 to 8, characterized in that the compressor (3) is arranged between two sides of the bracket (1) and is connected with the bracket (1) at a lateral bushing assembly (1.2) by means of fasteners, the bracket (1) being connected with the frame (2) by means of fasteners at mounting holes (1.13) of a bottom surface (1.10), wherein the at least three bushing assemblies (1.2) are arranged on both sides of the compressor (3).

10. The mounting structure of a vehicle compressor according to claim 9, characterized in that the inner core (1.23) of the bushing assembly (1.2) is attached at one end with a limiting plate (1.24) against the side of the bracket body (1.1) and at the other end towards the compressor (3).