Compressor damping device with two-stage damping function
By designing a compressor vibration-absorbing device with two-stage vibration-absorbing function, using the combined structure of the first-stage and second-stage vibration-absorbing brackets and bushings, the problems of compressor vibration and noise transmission in new energy vehicles are solved, and better vibration-absorbing effect and production efficiency are achieved.
Patent Information
- Application Number
- CN202420692223.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The vibration and noise generated when the compressor works in new energy vehicles are transmitted to the car through the body, causing components such as the dashboard and steering wheel to vibrate, affecting the user's driving experience. The existing first-level vibration-absorbing structure is not effective.
A compressor vibration damping device with two-stage vibration damping function is designed, including a first-stage compressor bracket and a second-stage compressor bracket. The two are connected by vibration damping bushings and connectors to form a first-stage and second-stage vibration damping body. An integrated die-casting structure and limiting plate are adopted to improve the vibration damping effect and bushing life.
Effectively reduce the vibration and noise of the compressor, improve vibration damping effect, adapt to models of different chassis, simplify production processes, reduce weight and production costs, and increase the durability of the bushing.
Smart Images
Figure CN222633379U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of passenger vehicle parts, in particular to a compressor vibration reduction device with a two-stage vibration reduction function. Background Art
[0002] With the increasing popularity of passenger cars, users have put forward higher and higher requirements for the comprehensive experience of vehicles, especially the vibration and noise performance in the car. For new energy electric vehicles, since electric vehicles do not have the vibration and noise mask of traditional internal combustion engines, the noise generated by the compressor when it is working will be doubly prominent. The vibration of the compressor when it is working will be directly transmitted to the static field inside the car through the car body as an excitation source. During the transmission process, the vibration of the compressor will also cause resonance of other components on the transmission path, thereby causing vibration of the dashboard, steering wheel, four-door guard plates, vehicle floor and vehicle seats, which will seriously affect the user's driving experience.
[0003] In order to effectively reduce the impact of compressor vibration and noise on user driving, existing new energy vehicles fix the compressor on the motor and play a certain vibration reduction role through the suspension of the motor. However, the vibration reduction effect of this primary vibration reduction structure is not good and cannot achieve a good vibration reduction effect to meet user requirements. Therefore, a new compressor vibration reduction structure is needed to improve the vibration reduction effect of the compressor when it is working. Utility Model Content
[0004] The utility model aims to overcome the defects of the prior art and provide a compressor vibration reduction device with two-stage vibration reduction function to solve the problems that the electric vehicle compressor has large working noise, obvious vibration and poor effect of the first-stage vibration reduction structure.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] The utility model discloses a compressor vibration reduction device with a two-stage vibration reduction function, comprising:
[0007] A first-stage compressor bracket, wherein a first-stage vibration-damping bushing is installed at the edge of the bracket body, and a first connecting hole opened on one side of the first-stage compressor bracket is rigidly connected to the compressor assembly through a connecting piece to form a first-stage vibration-damping body; and
[0008] a secondary compressor support detachable from the primary compressor support;
[0009] The structure of the secondary compressor bracket is adapted to the shape of the bracket body, the primary vibration damping bushing is softly connected to the secondary compressor bracket through the connecting piece and a second connecting hole is provided, and a secondary vibration damping bushing is installed in the middle of the secondary compressor bracket to form a secondary vibration damping body.
[0010] Furthermore, a claw portion capable of extending upward is provided on one side of the bracket body, and the first connecting hole is provided at the end of the claw portion and the bracket body.
[0011] Furthermore, it also includes an adapter bracket that is rigidly connected to the sub-frame and is softly connected to the secondary vibration-damping bushing through the connecting piece.
[0012] Furthermore, the axial stiffness of the first-stage vibration-damping bushing is smaller than the radial stiffness.
[0013] Furthermore, the axial stiffness of the secondary vibration-damping bushing is greater than the radial stiffness.
[0014] Furthermore, both the primary vibration-damping bushing and the secondary vibration-damping bushing are installed with bushing limiting plates.
[0015] Furthermore, the connecting piece is a hexagonal head bolt.
[0016] Furthermore, the first-stage compressor bracket and the second-stage compressor bracket are integrally die-cast.
[0017] In the above technical scheme, the compressor vibration reduction device with two-stage vibration reduction function provided by the utility model adopts a platform design compared with the prior art, and is installed on the subframe. Through the different designs of the adapter brackets, it can be adapted to vehicle models with different chassis; the first-level compressor bracket and the second-level compressor bracket adopt an integrated die-casting structure, which can simplify the production process and reduce weight and production costs; the first-level vibration reduction bushing and the second-level vibration reduction bushing have an additional limiting structure, which can increase the life of the bushing and avoid movement interference and direct falling off. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0019] Figure 1 This is a schematic diagram of the overall installation of a compressor vibration reduction device with a two-stage vibration reduction function disclosed in the utility model;
[0020] Figure 2 It is an exploded schematic diagram of the installation of a compressor vibration reduction device with a two-stage vibration reduction function disclosed in the utility model;
[0021] Figure 3 The utility model discloses a compressor vibration reduction device with two-stage vibration reduction function.
[0022] Description of reference numerals:
[0023] 1. Compressor assembly; 2. Bolts; 3. Bolts; 4. Bolts; 5. Secondary vibration damping bushing; 6. Secondary compressor bracket; 7. Primary vibration damping bushing; 8. Primary compressor bracket; 81. Bracket body; 82. Claw; 9. Subframe; 10. Adapter bracket; 11. Adapter bracket; 12. Limit plate; 13. Limit plate. DETAILED DESCRIPTION
[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] See also Figure 1-3 As shown;
[0026] The utility model discloses a compressor vibration reduction device with two-stage vibration reduction function, comprising: a first-stage compressor bracket 8, a first-stage vibration reduction bushing 7, a second-stage compressor bracket 6, and a second-stage vibration reduction bushing 5;
[0027] The first-stage compressor bracket 8 has a bracket body 81, and two claws 82 are integrally formed on one side of the bracket body 81. One end of the claw 82 is fixedly connected to the bracket body 81, and the other end extends upward. A first-stage vibration-damping bushing 7 is installed at the edge of the bracket body 81. In this structure, the first-stage vibration-damping body is to hard-connect the compressor assembly 1 with the first-stage compressor bracket 8 through four bolts 3, and then to soft-connect the first-stage vibration-damping bushing 7 on the first-stage compressor bracket 8 with the second-stage compressor bracket 6 through three bolts 2;
[0028] The secondary compressor bracket 6 can be separated from the primary compressor bracket 8. The secondary compressor bracket 6 is constructed to be adapted to the shape of the bracket body 81. A secondary vibration damping bushing 5 is installed in the middle of the secondary compressor bracket 6. In this structure, the secondary vibration damping body is to softly connect the secondary vibration damping bushing 5 on the secondary compressor bracket 6 with the compressor adapter bracket 10 and the adapter bracket 11 through three bolts 4, and then the compressor adapter bracket 10 and the adapter bracket 11 are hard-connected with the subframe 9, so as to achieve the fixation of the compressor on the whole vehicle and the secondary vibration reduction design.
[0029] See also Figure 3 As shown,
[0030] In order to effectively avoid the resonance of the compressor at low speed, the compressor vibration reduction device combines the relative arrangement positions of the compressor 1, the first-stage compressor bracket 8, and the second-stage compressor bracket 6. In this structure, the axial stiffness of the first-stage vibration reduction bushing 7 is smaller than the radial stiffness, and the axial stiffness of the second-stage vibration reduction bushing 5 is larger than the radial stiffness, thereby effectively reducing the first 6 modes of the entire system.
[0031] In order to effectively prevent the primary vibration damping bushing 7 and the secondary vibration damping bushing 5 from breaking / colliding with boundary parts during the movement of the entire secondary vibration damping structure and increase the durability of the bushing, the compressor vibration damping device adds a primary vibration damping bushing limit plate 12 and a secondary vibration damping bushing limit plate 13 to limit the movement of the entire system.
[0032] The primary compressor bracket 8 and the secondary compressor bracket 6 of the compressor vibration reduction device adopt an integrated die-casting structure, which can not only ensure the bracket mode, but also effectively reduce the weight and production cost.
[0033] In the above technical scheme, the compressor vibration reduction device with two-stage vibration reduction function provided by the utility model adopts a platform design compared with the prior art, and is installed on the subframe. Through the different designs of the adapter brackets, it can be adapted to vehicle models with different chassis; the first-level compressor bracket 8 and the second-level compressor bracket 6 adopt an integrated die-casting structure, which can simplify the production process and reduce weight and production costs; the first-level vibration reduction bushing 7 and the second-level vibration reduction bushing 5 increase the limiting structure, which can increase the life of the bushing and avoid movement interference and direct falling off.
[0034] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A compressor vibration reduction device with two-stage vibration reduction function, characterized in that: include: A first-stage compressor bracket (8), wherein a first-stage vibration-damping bushing (7) is installed at the edge of the bracket body (81), and a first connection hole opened on one side of the first-stage compressor bracket (8) is rigidly connected to the compressor assembly (1) through a connecting piece to form a first-stage vibration-damping body; and further comprising a secondary compressor support (6) capable of being separated from the primary compressor support (8); The secondary compressor bracket (6) is constructed to match the shape of the bracket body (81), the primary vibration-damping bushing (7) is softly connected to the secondary compressor bracket (6) through the connecting piece and a second connecting hole is provided, and a secondary vibration-damping bushing (5) is installed in the middle of the secondary compressor bracket (6) to form a secondary vibration-damping body.
2. A compressor vibration reduction device with two-stage vibration reduction function according to claim 1, characterized in that ； A claw portion (82) capable of extending upward is provided on one side of the bracket body portion (81), and the first connection hole is provided at the end of the claw portion (82) and the bracket body portion (81).
3. A compressor vibration reduction device with two-stage vibration reduction function according to claim 1, characterized in that ； It also includes an adapter bracket (10, 11) rigidly connected to the auxiliary frame (9), which is softly connected to the secondary vibration-damping bushing (5) through the connecting piece.
4. A compressor vibration reduction device with two-stage vibration reduction function according to claim 1, characterized in that ； The axial rigidity of the primary vibration-damping bushing (7) is smaller than the radial rigidity.
5. A compressor vibration reduction device with two-stage vibration reduction function according to claim 1, characterized in that ； The axial rigidity of the secondary vibration-damping bushing (5) is greater than its radial rigidity.
6. A compressor vibration reduction device with two-stage vibration reduction function according to any one of claims 1 to 5, characterized in that ； The first-stage vibration-damping bushing (7) and the second-stage vibration-damping bushing (5) are both installed with bushing limiting plates (12, 13).
7. A compressor vibration reduction device with two-stage vibration reduction function according to any one of claims 1 to 5, characterized in that ； The connecting pieces are hexagonal head bolts (2, 3, 4).
8. A compressor vibration reduction device with two-stage vibration reduction function according to any one of claims 1 to 5, characterized in that ； The first-stage compressor bracket (8) and the second-stage compressor bracket (6) are integrally die-cast.