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CN-122014565-A - Vibration reduction bracket of air conditioner compressor of lightweight thermal management system

CN122014565ACN 122014565 ACN122014565 ACN 122014565ACN-122014565-A

Abstract

The invention discloses a vibration reduction bracket of an air conditioner compressor of a lightweight heat management system, which relates to the technical field of automobile heat management systems. Through adopting plastic material's linking bridge self density far below metal, and possess excellent acoustic damping performance, thereby directly solved the problem that metal material density is big, weight is heavy and modal frequency is lower, simultaneously, the vibration damping bush sets up on the linking bridge, and pass this bush through connecting bolt and fix the compressor, make the high frequency vibration and the transient state impact that the compressor during operation produced carry out the first level through the vibration damping bush on the transfer path at first, the rethread high damping plastic linking bridge body carries out the secondary structure power consumption, the high frequency vibration isolation ability of system has been promoted by a wide margin, effectively avoided the vibration transmission to drive assembly and driver's cabin production abnormal sound of whistling.

Inventors

  • LI XIANG
  • WANG JINHU
  • LI LAN
  • CHEN QINGYUN
  • LI YUGANG

Assignees

  • 亚新科噪声与振动技术（安徽）有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (10)

  1. 1. A lightweight thermal management system air conditioning compressor vibration reduction bracket, comprising: The connecting bracket (1), the main body of the connecting bracket (1) is injection molded by plastic material and is used for providing a supporting structure; A vibration-damping bush (2), wherein the vibration-damping bush (2) is arranged on the connecting bracket (1) and is used for being connected with a compressor and damping vibration; and the connecting bolt (3) penetrates through the vibration reduction bushing (2) to fix the compressor to the connecting bracket (1).
  2. 2. The vibration reduction bracket of an air conditioner compressor of a lightweight heat management system according to claim 1, wherein the connecting bracket (1) is provided with a grid hollow reinforcing rib structure, the grid hollow reinforcing ribs comprise reinforcing ribs (4) which are distributed in a grid shape in a stress path area of the connecting bracket (1), and grid hollow (5) formed by encircling the reinforcing ribs (4), and the grid hollow (5) is located in a non-stress area of the connecting bracket (1).
  3. 3. The vibration reduction bracket of the air conditioner compressor of the lightweight heat management system according to claim 1, wherein the connecting bracket (1) is pre-embedded with a metal insert (6) at a bolt connection position, and the metal insert (6) is integrally formed with the plastic main body through an insert injection molding process.
  4. 4. The lightweight thermal management system air conditioner compressor vibration reduction bracket according to claim 1, wherein the vibration reduction bushing (2) comprises a long bushing (21) and a short bushing (22), the long bushing (21) has an axial length greater than that of the short bushing (22), the long bushing (21) is arranged at two main stress points on the compressor, and the short bushing (22) is arranged at an auxiliary support point on the compressor.
  5. 5. The vibration reduction bracket of the lightweight heat management system air conditioner compressor according to claim 4, wherein the long bushing (21) comprises a first rubber body (211) and a long inner core (212), the first rubber body (211) is vulcanized and coated on the periphery of the long inner core (212), and the outer circumferential surface of the first rubber body (211) is directly in interference fit with the mounting hole (7) of the connecting bracket (1).
  6. 6. The vibration reduction bracket of the lightweight heat management system air conditioner compressor according to claim 4, wherein the short bushing (22) comprises a second rubber body (221) and a short inner core (222), the second rubber body (221) is vulcanized and coated on the periphery of the short inner core (222), and the outer circumferential surface of the second rubber body (221) is directly in interference fit with the mounting hole (7) of the connecting bracket (1).
  7. 7. A lightweight heat management system air conditioner compressor vibration reduction bracket as claimed in claim 3, wherein the metal insert (6) comprises three circular hole inserts (61) and one elliptical hole insert (62), and the long axis direction of the elliptical hole insert (62) is arranged along the assembly tolerance accumulation direction for absorbing the assembly position deviation between the connecting bracket (1) and the compressor.
  8. 8. The vibration reduction bracket of the air conditioner compressor of the lightweight heat management system according to claim 1, further comprising at least three limiting plates (8), wherein the limiting plates (8) are metal thin-wall stamping parts, the limiting plates (8) are arranged on the outer side of the connecting bracket (1) and fixed through connecting bolts (3) for limiting the axial and radial excessive displacement of the vibration reduction bushing (2) under the limiting working condition.
  9. 9. The vibration reduction bracket of the air conditioner compressor of the lightweight heat management system according to claim 1, wherein the plastic material is reinforced polyamide or long glass fiber reinforced polypropylene, and the mass content of the glass fiber is 30% -50%.
  10. 10. A vibration-damping bracket for an air conditioner compressor of a lightweight heat management system according to claim 3, wherein the inner core material of the metal insert (6) and the vibration-damping bush (2) is an aluminum alloy.

Description

Vibration reduction bracket of air conditioner compressor of lightweight thermal management system Technical Field The invention relates to the technical field of automobile thermal management systems, in particular to a vibration reduction bracket of an air conditioner compressor of a lightweight thermal management system. Background The air conditioner compressor is one of the core components of the automobile thermal management system, and vibration generated in the working process is transmitted to the automobile body and the electric drive assembly through the mounting bracket, so that NVH (noise, vibration and harshness) performance of the whole automobile is directly affected. In order to ensure reliable operation of the compressor and reduce vibration transmission, a special vibration reduction bracket is generally required to be designed, and vibration isolation and noise reduction are realized through the cooperation of the bracket body and the rubber bushing. Currently, the existing vibration reduction bracket of the air conditioner compressor in the industry mainly adopts a stamping sheet metal structure or a die-casting aluminum structure, as shown in fig. 3. Such brackets utilize the high stiffness characteristics of the metallic material to achieve reliable support of the compressor body. The technical scheme is mature and applied in the field of traditional fuel vehicles, can effectively isolate low-frequency and medium-frequency (generally lower than 300 Hz) vibration excitation generated by engine operation, and meets NVH performance requirements under conventional working conditions. However, with the rapid development of new energy automobiles, the application of electric air conditioner compressors is increasingly popular, and the technical defects of the existing metal vibration reduction brackets are increasingly prominent. Different from the traditional fuel oil vehicle, the new energy electric compressor has the working characteristics of high-speed operation and frequent flameout, wherein the high-speed operation brings high-frequency vibration (generally up to 500-2000 Hz), and the frequent start and stop causes the increase of transient impact and is accompanied with the electromagnetic excitation of a motor. The existing stamping metal plate and die-casting aluminum bracket is difficult to effectively isolate the high-frequency vibration due to the fact that the density of metal materials is high (the weight of the bracket assembly is generally heavy) and the modal frequency is low (generally lower than 350 Hz), so that the vibration is easily transmitted to the electric drive assembly and the cab through the bracket, and howling abnormal sound is generated. Disclosure of Invention The invention provides a vibration reduction bracket for an air conditioner compressor of a lightweight thermal management system, which can solve the problems that the prior stamping sheet metal and die-casting aluminum bracket are difficult to effectively isolate the high-frequency vibration due to high density of metal materials and low modal frequency, so that the vibration is easy to be transmitted to an electric drive assembly and a cab through the bracket, and howling abnormal sound is generated. A vibration reduction bracket of an air conditioner compressor of a lightweight thermal management system comprises a connecting bracket, a vibration reduction bushing and a connecting bolt, wherein a main body of the connecting bracket is formed by injection molding of a plastic material and is used for providing a supporting structure, the vibration reduction bushing is arranged on the connecting bracket and is used for being connected with the compressor and reducing vibration, and the connecting bolt penetrates through the vibration reduction bushing to fix the compressor to the connecting bracket. Compared with the prior art, the vibration reduction bracket for the air conditioner compressor of the lightweight thermal management system has the following beneficial effects: this lightweight thermal management system air condition compressor damping support is through adopting the linking bridge of plastics material density far below metal itself, and possess excellent acoustic damping performance, thereby directly solved the problem that metal material density is big, weight is heavy and modal frequency is low, simultaneously, the damping bush sets up on the linking bridge, and pass this bush through connecting bolt and fix the compressor, make the high frequency vibration and the transient state impact that the compressor during operation produced carry out the primary damping through the damping bush at first on the transfer path, the rethread high damped plastics linking bridge body carries out the secondary structure power consumption, the high frequency vibration isolation ability of system has been promoted by a wide margin, effectively avoid vibration transmission to drive assembly and drive