Anti-axial movement assembly, compressor and vehicle
By using an interference fit between the inner wall of the bearing housing and the outer ring of the bearing, and by embedding a buffer at the bottom, the vibration and noise problems caused by axial movement of the inner ring of the bearing in the vehicle compressor are solved, resulting in a simple structure and long service life anti-axial movement component.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SANDEN HUAYU AUTOMOTIVE AIR CONDITIONING CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-23
AI Technical Summary
In existing vehicle compressors, axial movement of the bearing inner ring causes vibration and noise, and existing anti-axial movement devices are complex in structure, have low installation efficiency, and are prone to wear.
An interference fit is made between the inner wall of the bearing housing and the outer ring of the bearing, and a buffer element, such as an elastic gasket, is embedded at the bottom of the bearing housing to achieve a flexible connection between the inner ring of the bearing and the bottom of the housing, thereby reducing vibration transmission.
The structure has been simplified, assembly efficiency has been improved, service life has been extended, and operating noise and wear have been reduced.
Smart Images
Figure CN224396693U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle compressor manufacturing technology, and in particular to an anti-axial movement component, a compressor and a vehicle. Background Technology
[0002] In a vehicle-mounted compressor, a motor drives the main shaft to rotate the pump body components to compress the refrigerant. The main shaft is usually mounted inside the inner ring of a bearing. Since bearings generally have axial clearance, when the outer ring of the bearing is fixedly installed, the inner ring of the bearing has a certain amount of axial clearance. When the main shaft rotates and is affected by the gas force, causing slight axial movement, it will cause the inner ring of the bearing at the end of the main shaft to vibrate, and transmit the vibration to the outside through the bottom of the housing, generating additional noise.
[0003] In the prior art, an anti-axial movement device uses a bearing pressure plate to press the outer ring of the bearing against the end face of the countersunk hole and connects it to the rear end cover with bolts and threads. At the same time, the motor shaft is fixed to the inner ring of the bearing by riveting. The outer ring of the bearing is fixedly connected to the rear end cover, which can fix the motor shaft and the rear end cover axially and prevent the motor shaft from moving axially. However, this method has a complex structure, low installation efficiency, and the rigid connection between the motor shaft and the rear end cover can easily cause wear on the rear end cover when the motor shaft tends to move, affecting the service life of the device. Utility Model Content
[0004] The purpose of this invention is to provide an anti-axial movement component, a compressor, and a vehicle. The anti-axial movement component has a simple structure and a long service life.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] In a first aspect, an anti-axial movement component is provided, comprising a housing, a main shaft, and a bearing. One end of the main shaft is used for transmission connection with the output shaft of a motor, and the other end of the main shaft passes through the inner ring of the bearing. The main shaft and the inner ring of the bearing are in clearance fit. The housing includes side walls and a bottom, and has a receiving space. The main shaft and the bearing are coaxially disposed in the receiving space. A bearing seat is provided on the bottom of the housing, and the outer ring of the bearing can be embedded in the bearing seat. The inner wall of the bearing seat can be fixed in relative position with the outer ring of the bearing. The anti-axial movement component also includes a buffer element, which is embedded in the bottom of the bearing seat. Along the axial direction of the main shaft, the inner ring of the bearing and / or the end of the main shaft near the bottom of the housing abuts against the buffer element.
[0007] Preferably, the bottom of the bearing housing is provided with a circular buffer groove, the buffer element is a first elastic pad, the first elastic pad is annular and is embedded in the circular buffer groove, and the inner ring of the bearing abuts against the first elastic pad at the end near the buffer groove.
[0008] Preferably, the axis of the circular buffer groove coincides with the axis of the main shaft.
[0009] Preferably, the width of the first elastic washer along the radial direction of the main shaft is not less than the width of the bearing inner ring.
[0010] Preferably, the bottom of the bearing housing is provided with a circular buffer groove, and the buffer element is a second elastic pad. The second elastic pad is embedded in the buffer groove, and the end of the main shaft near the bottom of the housing abuts against the second elastic pad.
[0011] Preferably, the axis of the circular buffer groove coincides with the axis of the main shaft.
[0012] Preferably, one end of the outer ring of the bearing abuts against the bottom wall of the bearing housing; and / or, the inner wall of the bearing housing is interference-fitted with the outer ring of the bearing.
[0013] Preferably, the buffer is a wave-shaped pad.
[0014] Secondly, a compressor is provided, which includes a motor and an anti-axial movement component of any of the above technical solutions. The motor includes a stator and a rotor. The stator is fixed in position relative to the housing. The rotor passes through the stator and is able to rotate relative to the stator. The main shaft is interference-fitted with the rotor of the motor.
[0015] Thirdly, a vehicle is provided, which is equipped with an air conditioner, the air conditioner including the compressor of the above-mentioned technical solution.
[0016] The beneficial effects of this utility model are as follows: It provides an anti-axial movement component, a compressor, and a vehicle. The anti-axial movement component can be fixed in relative position with the outer ring of the bearing through the inner wall of the bearing housing, and a buffer is provided. The buffer is embedded in the bottom of the bearing housing. Along the axial direction of the main shaft, the inner ring of the bearing and / or the end of the main shaft near the bottom of the housing abuts against the buffer, so that the inner ring of the bearing and / or the end of the main shaft near the bottom of the housing is flexibly connected to the bottom of the housing. Compared with riveting or threaded fixing, the structure is simple and the service life is long. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the anti-axial movement component and compressor provided in Embodiment 1 of this utility model;
[0018] Figure 2 yes Figure 1 A magnified view of part A in the middle;
[0019] Figure 3 This is a schematic diagram of the anti-axial movement component and compressor provided in Embodiment 2 of this utility model;
[0020] Figure 4 yes Figure 3A magnified view of part B in the middle section.
[0021] In the diagram: 1. Housing; 11. Side wall; 12. Bottom of housing; 13. Accommodation space; 14. Bearing housing; 2. Main shaft;
[0022] 3. Bearing; 31. Inner ring; 32. Outer ring;
[0023] 4. First elastic gasket; 5. Second elastic gasket; 6. Stator; 7. Rotor. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0028] Example 1:
[0029] Firstly, please refer to Figure 1 and Figure 2 This embodiment provides an anti-axial movement component, including a housing 1, a main shaft 2, and a bearing 3. One end of the main shaft 2 is used for transmission connection with the output shaft of a motor, and the other end of the main shaft 2 passes through the inner ring 31 of the bearing 3. The main shaft 2 and the inner ring 31 of the bearing 3 are clearance-fitted. The housing 1 includes a side wall 11 and a housing bottom 12. The housing 1 has a receiving space 13, in which the main shaft 2 and the bearing 3 are coaxially arranged. A bearing seat 14 is provided on the housing bottom 12, and the outer ring 32 of the bearing 3 can be embedded in the bearing seat 14. The inner wall of the bearing seat 14 can be fixed in relative position with the outer ring 32 of the bearing 3. The anti-axial movement component also includes a buffer element, which is embedded in the bottom of the bearing seat 14. Along the axial direction of the main shaft 2, the end of the inner ring 31 of the bearing 3 near the housing bottom 12 abuts against the buffer element. Specifically, the inner wall of the bearing seat 14 and the outer ring 32 of the bearing 3 are interference-fitted, and the bearing 3 is a ball bearing. This configuration, through the interference fit between the inner wall of the bearing housing 14 and the outer ring 32 of the bearing 3, allows the relative position of the inner wall of the bearing housing 14 and the outer ring 32 of the bearing 3 to be fixed. Compared with riveting or threaded fixing, the structure is simple and improves assembly efficiency. At the same time, by having the end of the inner ring 31 of the bearing 3 near the bottom 12 of the housing abut against the buffer, a flexible connection is made between the end of the inner ring 31 of the bearing 3 near the bottom 12 of the housing and the bottom 12 of the housing, avoiding wear between the end of the inner ring 31 of the bearing 3 near the bottom 12 of the housing and the bottom 12 of the housing, and extending the service life of the anti-axial movement component.
[0030] Alternatively, please refer to Figure 2 The bearing housing 14 has a circular buffer groove at its bottom, and the buffer element is a first elastic pad 4. The first elastic pad 4 is annular and is embedded in the circular buffer groove. The inner ring 31 of the bearing 3 abuts against the first elastic pad 4 near the circular buffer groove. Specifically, there is a gap between the bottom wall of the bearing housing 14 and the main shaft 2. With this arrangement, the first elastic pad 4 plays a role in buffering and vibration reduction. During the operation of the compressor, when the main shaft 2 moves and causes the inner ring 31 of the bearing 3 to vibrate axially, the inner ring 31 of the bearing 3 can abut against the first elastic pad 4, reducing the vibration transmitted to the bottom of the housing 12 and the external drive device, and reducing operating noise.
[0031] Specifically, the buffer element is a corrugated shim. The corrugated shim effectively absorbs and disperses vibrations and impacts, thereby improving vibration damping. Simultaneously, the corrugated shim provides better stability, preventing the inner ring 31 of the bearing 3 from sliding or shifting under the influence of the spindle 2. In other embodiments, the buffer element may also be a rubber shim, a spring element, etc.
[0032] Preferably, the axis of the circular buffer groove coincides with the axis of the main shaft 2. This arrangement ensures that the stress between the inner ring 31 of the bearing 3 and the first elastic washer 4 can be evenly distributed, avoiding stress concentration that could cause structural damage and helping to reduce the noise during compressor operation.
[0033] Optionally, along the radial direction of the spindle 2, the width of the first elastic washer 4 is not less than the width of the inner ring 31 of the bearing 3. This arrangement ensures that the width of the first elastic washer 4 is not less than the width of the inner ring 31 of the bearing 3, thereby increasing the contact area between the first elastic washer 4 and the inner ring 31 of the bearing 3. This helps to distribute the load and reduce local pressure. At the same time, the larger contact area can reduce the friction between the inner ring 31 of the bearing 3 and the first elastic washer 4, thereby reducing wear and extending service life.
[0034] Optionally, one end of the outer ring 32 of the bearing 3 abuts against the bottom wall of the bearing housing 14. This arrangement further ensures that the inner wall of the bearing housing 14 can be fixed in relative position with the outer ring 32 of the bearing 3.
[0035] During compressor operation, the main shaft 2 is subjected to gas force, which causes axial movement, thereby causing the inner ring 31 of the bearing 3 to vibrate axially. The first elastic washer 4 abuts against the inner ring 31 of the bearing 3, providing preload to the inner ring 31 of the bearing 3. When the main shaft 2 moves axially, the clearance of the inner ring 31 of the bearing 3 is restricted by the first elastic washer 4, which greatly reduces the vibration of the inner ring 31 of the bearing and improves the noise caused by the movement of the main shaft 2 in the bearing and the bottom 12 of the housing.
[0036] Secondly, this embodiment provides a compressor, which includes a motor and the aforementioned anti-axial movement assembly. The motor includes a stator 6 and a rotor 7. The stator 6 is fixed relative to the housing 1, and the rotor 7 is inserted into the stator 6 and can rotate relative to the stator 6. The main shaft 2 is interference-fitted with the motor rotor 7. Specifically, the compressor also includes a pump body. The rotation of the main shaft 2 can drive the pump body to compress the refrigerant. When the compressor is running, the motor stator 6 is fixedly connected to the compressor housing 1, and the main shaft 2 is interference-fitted into the rotor 7. After receiving an electrical signal, the motor stator 6 drives the rotor 7 to rotate, which in turn drives the main shaft 2 to rotate, and drives the pump body structure to compress the refrigerant.
[0037] Thirdly, the invention provides a vehicle equipped with an air conditioner, which includes the aforementioned compressor. In other embodiments, the compressor can also be applied to various fields such as industry, commerce, medical, and food, for example, for driving pneumatic equipment, compressing and storing gases, and for air conditioning in aircraft or homes.
[0038] Example 2:
[0039] Please refer to Figure 3 and Figure 4The difference between this embodiment and Embodiment 1 is that:
[0040] This embodiment provides an anti-axial movement component, including a housing 1, a main shaft 2, and a bearing 3. One end of the main shaft 2 is used for transmission connection with the output shaft of a motor, and the other end of the main shaft 2 passes through the inner ring 31 of the bearing 3. The main shaft 2 and the inner ring 31 of the bearing 3 are clearance-fitted. The housing 1 includes a side wall 11 and a housing bottom 12. The side wall 11 and the housing 1 enclose a receiving space 13. The main shaft 2 and the bearing 3 are coaxially arranged in the receiving space 13. A bearing seat 14 is provided on the housing bottom 12. The outer ring 32 of the bearing 3 can be embedded in the bearing seat 14. The inner wall of the bearing seat 14 can be fixed in relative position with the outer ring 32 of the bearing 3. The anti-axial movement component also includes a buffer member. The buffer member is embedded in the bottom of the bearing seat 14. Along the axial direction of the main shaft 2, the end of the main shaft 2 near the housing bottom 12 abuts against the buffer member. With this configuration, the end of the main shaft 2 near the bottom 12 of the housing abuts against the buffer, making the end of the main shaft 2 near the bottom 12 of the housing flexibly connected to the bottom 12 of the housing. This avoids wear between the end of the main shaft 2 near the bottom 12 of the housing and the bottom 12 of the housing, and increases the service life of the anti-axial movement component.
[0041] Optionally, a circular buffer groove is provided at the bottom of the bearing housing 14, and the buffer element is a second elastic washer 5. The second elastic washer 5 is embedded in the circular buffer groove, and the end of the main shaft 2 near the bottom 12 of the housing abuts against the second elastic washer 5. Specifically, the axis of the circular buffer groove coincides with the axis of the main shaft 2. This arrangement allows the main shaft 2 to pass through the inner ring 31 of the bearing 3 and abut against the second elastic washer 5, which provides preload to the main shaft 2. When the main shaft 2 is subjected to gas force during compressor operation, the preload of the second elastic washer 5 can suppress the axial movement of the main shaft 2, reduce the vibration transmitted to the bottom 12 of the housing, and thus reduce the additional noise caused by the movement of the main shaft 2.
[0042] In other embodiments, along the axial direction of the main shaft 2, the inner ring 31 of the bearing 3 and the end of the main shaft 2 near the bottom 12 of the housing both abut against the buffer. The buffer simultaneously restricts the axial movement of the inner ring 31 of the bearing 3 and the main shaft 2, thereby preventing the vibration generated by the axial movement from being transmitted to the housing 1, effectively reducing the noise of the compressor.
[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An anti-axial movement assembly, comprising a housing (1), a main shaft (2), and a bearing (3), wherein one end of the main shaft (2) is used for transmission connection with the output shaft of a motor, the bearing (3) comprises an inner ring (31) and an outer ring (32), the other end of the main shaft (2) passes through the inner ring (31) of the bearing (3), and the main shaft (2) and the inner ring (31) of the bearing (3) are clearance-fitted, the housing (1) comprises a side wall (11) and a housing bottom (12), the housing (1) has a receiving space (13), the main shaft (2) and the bearing (3) are coaxially disposed in the receiving space (13), a bearing seat (14) is disposed on the housing bottom (12), and the outer ring (32) of the bearing (3) can be embedded in the bearing seat (14), characterized in that, The inner wall of the bearing housing (14) can be fixed relative to the outer ring (32) of the bearing (3). The anti-axial movement assembly also includes a buffer member, which is embedded in the bottom of the bearing housing (14). Along the axial direction of the main shaft (2), the inner ring (31) of the bearing (3) and / or the end of the main shaft (2) near the bottom (12) of the housing abuts against the buffer member.
2. The anti-axial movement component according to claim 1, characterized in that, The bearing housing (14) has a circular buffer groove at its bottom. The buffer element is a first elastic pad (4). The first elastic pad (4) is annular and is embedded in the circular buffer groove. The inner ring (31) of the bearing (3) abuts against the first elastic pad (4) at one end near the circular buffer groove.
3. The anti-axial movement component according to claim 2, characterized in that, The axis of the circular buffer groove coincides with the axis of the main shaft (2).
4. The anti-axial movement component according to claim 2, characterized in that, Along the radial direction of the main shaft (2), the width of the first elastic washer (4) is not less than the width of the inner ring (31) of the bearing (3).
5. The anti-axial movement component according to claim 1, characterized in that, The bearing seat (14) has a circular buffer groove at its bottom. The buffer is a second elastic pad (5). The second elastic pad (5) is embedded in the circular buffer groove. The end of the main shaft (2) near the bottom (12) of the housing abuts against the second elastic pad (5).
6. The anti-axial movement assembly according to claim 5, characterized in that, The axis of the circular buffer groove coincides with the axis of the main shaft (2).
7. The anti-axial movement assembly according to any one of claims 1-6, characterized in that, One end of the outer ring (32) of the bearing (3) abuts against the bottom wall of the bearing housing (14), and / or the inner wall of the bearing housing (14) is interference-fitted with the outer ring (32) of the bearing (3).
8. The anti-axial movement assembly according to claim 7, characterized in that, The buffer is a wave-shaped pad.
9. A compressor, characterized in that, The compressor includes a motor and an anti-axial movement assembly as described in any one of claims 1-8. The motor includes a stator (6) and a rotor (7). The stator (6) is fixed relative to the housing (1). The rotor (7) passes through the stator (6) and is rotatable relative to the stator (6). The main shaft (2) is interference-fitted with the rotor (7) of the motor.
10. A vehicle equipped with an air conditioner, characterized in that, The air conditioner includes the compressor as described in claim 9.