CN214945750U - Bearing assembly, compressor and electric appliance - Google Patents
Bearing assembly, compressor and electric appliance Download PDFInfo
- Publication number
- CN214945750U CN214945750U CN202120707277.3U CN202120707277U CN214945750U CN 214945750 U CN214945750 U CN 214945750U CN 202120707277 U CN202120707277 U CN 202120707277U CN 214945750 U CN214945750 U CN 214945750U
- Authority
- CN
- China
- Prior art keywords
- bearing
- ring
- bearing assembly
- groove
- outer ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 230000001050 lubricating effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 6
- 238000005461 lubrication Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model relates to a bearing field provides a bearing subassembly, compressor and electrical apparatus. The bearing assembly comprises a bearing inner ring, a bearing outer ring and a plurality of rollers, the bearing outer ring is arranged at the radial outer side of the bearing inner ring at intervals, the rollers can be arranged between the bearing outer ring and the bearing inner ring in a rolling manner, and the rollers are distributed along the circumferential direction of the bearing assembly; the bearing outer ring is formed by connecting at least two ring segments end to end; the bearing inner race is characterized in that an annular track groove extending along the circumferential direction is formed in the outer circumferential wall of the bearing inner race, a plurality of limiting grooves distributed at intervals along the circumferential direction are formed in the inner circumferential wall of the bearing outer race, the annular track groove and the limiting grooves are enclosed to form a plurality of mounting positions distributed at intervals along the circumferential direction, each roller corresponds to each mounting position one to one, and the rollers are limited in the corresponding mounting positions. When the bearing assembly is subjected to complex acting forces such as axial force, radial force, overturning moment and the like, the roller and the retainer cannot be abraded, the operation noise of the bearing assembly is favorably reduced, and the long-term stability of the structure and the performance of the bearing assembly is favorably ensured.
Description
Technical Field
The utility model relates to a bearing field specifically relates to a bearing assembly, compressor and electrical apparatus.
Background
In the scroll compressor, a crankshaft is rotatably connected with a support through a bearing, and a movable scroll plate of the scroll compressor is subjected to complex gas force, so that complex acting force and moment such as radial force, axial force, overturning moment and the like can be generated by matching the crankshaft, the bearing and the support.
This causes the bearing to be prone to axial play, deflection, stress concentration at the roller end, and the like, which causes the roller to be prone to rubbing against the retainer, even causes the retainer to deform, and reduces the mechanical efficiency of the bearing.
SUMMERY OF THE UTILITY MODEL
One of the objects of the present invention is to provide a bearing assembly with stable structural performance.
In order to achieve the above object, the present invention provides a bearing assembly including a bearing inner ring, a bearing outer ring and a plurality of rollers, wherein the bearing outer ring is disposed at an interval outside the bearing inner ring in a radial direction, the plurality of rollers are rollably disposed between the bearing outer ring and the bearing inner ring, and the rollers are distributed along a circumferential direction of the bearing assembly; the bearing outer ring is formed by connecting at least two ring segments end to end; the bearing inner race is characterized in that an annular track groove extending along the circumferential direction is formed in the outer circumferential wall of the bearing inner race, a plurality of limiting grooves distributed at intervals along the circumferential direction are formed in the inner circumferential wall of the bearing outer race, the annular track groove and the limiting grooves are enclosed to form a plurality of mounting positions distributed at intervals along the circumferential direction, each roller corresponds to each mounting position one to one, and the rollers are limited in the corresponding mounting positions.
It is from top to bottom because the utility model discloses a bearing assembly has saved the holder, like this bearing assembly can not lead to roller and holder to grind and bump when receiving complicated effort such as axial force, radial force and overturning moment, is favorable to reducing bearing assembly's operation noise, is favorable to guaranteeing bearing assembly's structure and performance long-term stability.
The bearing outer ring is provided with a first ring segment and a second ring segment, the first ring segment is provided with a first positioning protrusion facing the second ring segment, the second ring segment is provided with a first positioning groove facing away from the first ring segment, the first positioning protrusion is inserted into the first positioning groove, and the first positioning protrusion and the first positioning groove are matched to limit the axial dislocation of the first ring segment relative to the second ring segment along the bearing assembly.
Therefore, relative dislocation of the ring segments in the axial direction can be avoided, and the bearing assembly is stable in posture.
The first ring section is provided with a first combining surface, the second ring section is provided with a second combining surface, the first combining surface is attached to the second combining surface, the first positioning protrusion protrudes from the first combining surface to the second combining surface, and the first positioning groove is recessed from the second combining surface to the first combining surface.
Therefore, the matching precision among the ring segments is improved, and the stable posture of the bearing assembly is further ensured.
In a further aspect, the first ring segment and the second ring segment have the same structure.
Therefore, the bearing assembly is beneficial to reducing the types of parts and simplifying the production and processing process of the bearing assembly.
In another preferred scheme, the roller is in a shape of a kidney-shaped table, the axis of the roller is along the axial direction of the bearing assembly, the roller is in line contact with the groove wall of the annular roller way groove, and the roller is in line contact with the groove wall of the limiting groove.
Therefore, the matching stability of the bearing inner ring, the roller and the bearing outer ring is further improved, the structure and the performance stability of the bearing assembly are improved, and the roller can adaptively adjust the angle and the acting position when the bearing assembly bears the overturning moment, so that the stress concentration of the roller and the vibration noise of the bearing assembly during operation are reduced.
The second purpose of the utility model is to provide a compressor with stable structure performance.
In order to achieve the above object, the utility model provides a compressor includes support, pivot and aforementioned bearing assembly, and the support has the bearing mounting hole, and on the pivot was located to the fixed cover of bearing inner race, bearing inner race fixed mounting in the bearing mounting hole, the internal perisporium of bearing mounting hole and bearing inner race's periphery wall matchd.
It can be seen from above that, because the periphery wall of bearing inner race and the cooperation of the internal perisporium of bearing installation section, the internal perisporium that can adopt the bearing mounting hole like this carries out radial limit position for the bearing inner race, is favorable to reducing the influence of sectional type bearing inner race to the bearing unit spare, is favorable to guaranteeing the long-term steady operation of pivot, is favorable to guaranteeing the long-term steady operation of compressor.
Preferably, the outer circumferential wall of the bearing outer ring is in interference fit with the inner circumferential wall of the bearing mounting hole.
In another preferred embodiment, the bracket has a step surface on one side of the bearing mounting hole in the axial direction of the bearing assembly, the bracket is fixedly connected with an end cover on the other side of the bearing mounting hole, and the bearing outer ring is pressed between the step surface and the end cover.
Still another preferred scheme is that the bearing inner race has a lubrication passage that penetrates from the inner peripheral wall to the annular raceway groove, and the rotating shaft has a lubrication oil passage therein, the lubrication oil passage penetrating to the outer peripheral wall of the rotating shaft, the lubrication oil passage communicating with the lubrication passage.
Therefore, the roller can be well lubricated in movement, and further, the bearing assembly can be ensured to stably run for a long time.
The further proposal is that the outer peripheral wall of the rotating shaft is provided with a groove, or the inner peripheral wall of the bearing inner ring is provided with a groove; the lubricating oil way is communicated with the lubricating channel through a channel.
The third purpose of the utility model is to provide an electric appliance with stable structural performance.
In order to achieve the above object, the present invention provides an electric appliance including the compressor.
Drawings
Fig. 1 is a partial structural sectional view of an embodiment of the compressor of the present invention;
fig. 2 is a cross-sectional view of a bracket in an embodiment of the compressor of the present invention;
fig. 3 is an exploded view of an embodiment of the bearing assembly of the present invention.
Detailed Description
Bearing assembly, compressor and electrical embodiments:
the electrical appliance of this embodiment is an air conditioner, the electrical appliance of this embodiment includes the compressor of this embodiment, the compressor of this embodiment is a scroll compressor, please refer to fig. 1, the scroll compressor includes a housing (not shown in the figure), a bracket 200, a scroll assembly (not shown in the figure), a motor (not shown in the figure) and the bearing assembly 100 of this embodiment, the bracket 200, the scroll assembly, the motor and the bearing assembly 100 are all located in the housing, the scroll assembly, the bracket 200 and the motor are sequentially distributed from top to bottom, an outer peripheral wall of the bracket 200 is fixedly connected with an inner peripheral wall of the housing in an interference fit manner, an outer peripheral wall of a motor stator is fixedly connected with the inner peripheral wall of the housing in an interference fit manner, the scroll assembly is mounted on the bracket 200, the scroll assembly includes a movable scroll and a stationary scroll, the motor drives the movable scroll to move through a crankshaft 300 (an example of a rotating shaft), the structure principle of the scroll compressor can be referred to the prior art, and is not described in detail herein.
Alternatively, the electrical appliance of the present invention may also be an electrical appliance using a compressor, such as a refrigerator of other types, and of course, the electrical appliance of the present invention may also be other electrical appliances, such as a manipulator, directly using the bearing assembly 100 of the present invention.
The axial direction of the bearing assembly 100 of the present embodiment is in the vertical direction.
Referring to fig. 1 and 2, a bracket 200 has a communication hole 201 penetrating in a vertical direction, a normal line of the communication hole 201 has a circular sectional shape in the vertical direction, the communication hole 201 has a bearing mounting hole section 211 (an example of a bearing mounting hole), the bearing mounting hole section 211 is located at a lower end of the communication hole 201, an upper side of the bearing mounting hole section 211 has an annular step surface 212 (an example of a step surface), a crankshaft 300 passes through the communication hole 201, a bearing assembly 100 is mounted in the bearing mounting hole section 211, and the crankshaft 300 is rotatably supported on the bracket 200 by the bearing assembly 100.
Referring to fig. 1 and 3, the bearing assembly 100 includes a bearing outer ring 102, a bearing inner ring 101, and a plurality of rollers 103, wherein the bearing outer ring 102 is disposed at intervals on a radial outer side of the bearing inner ring 101, the plurality of rollers 103 are disposed between the bearing inner ring 101 and the bearing outer ring 102 in a rolling manner, and the rollers 103 are spaced apart from each other along a circumferential direction of the bearing assembly 100.
Referring to fig. 3, the bearing outer ring 102 is formed by splicing a first ring segment 121 and a second ring segment 122, the first ring segment 121 and the second ring segment 122 are both semi-annular, an annular end of the first ring segment 121 has a first combining surface 1211 facing the second ring segment 122, an annular end of the second ring segment 122 has a second combining surface facing the first ring segment 121, the first combining surface 1211 and the second combining surface are both parallel to an axis of the bearing assembly 100, and the first combining surface 1211 and the second combining surface are attached to each other.
The first ring segment 121 further has a first positioning protrusion 1212 protruding from the first combining surface 1211 towards the second combining surface along the normal direction of the first combining surface 1211, the second ring segment 122 further has a first positioning groove 1221 recessed from the second combining surface away from the first combining surface 1211 along the normal direction of the second combining surface, the first positioning protrusion 1212 is inserted into the first positioning groove 1221, and both axial side wall surfaces of the first positioning protrusion 1212 are in contact positioning with the groove wall of the first positioning groove 1221; therefore, the first positioning protrusion 1212 and the first positioning groove 1221 are engaged to limit the axial displacement of the first ring segment 121 along the bearing assembly 100 compared to the second ring segment 122, that is, under the engagement action of the first positioning protrusion 1212 and the first positioning groove 1221, the first ring segment 121 and the second ring segment 122 cannot be axially displaced along the bearing assembly 100.
Preferably, the first ring segment 121 and the second ring segment 122 have the same structure, that is, the first ring segment 121 and the second ring segment 122 are respectively located in two connection positions at the head and the tail ends of the arc direction, one connection position is provided with a positioning protrusion on the first ring segment 121 and a positioning groove correspondingly on the second ring segment 122, the other connection position is provided with a positioning groove on the first ring segment 121 and a positioning protrusion correspondingly on the second ring segment 122, and the positioning groove and the positioning protrusion are matched with each other by referring to the matching of the first positioning protrusion 1212 and the first positioning groove 1221. Therefore, the bearing assembly is beneficial to reducing the part types of the bearing assembly and simplifying the production and processing difficulty of the bearing assembly.
The inner circumferential wall of the bearing outer ring 102 is provided with a plurality of limiting grooves 123, the outer circumferential wall of the bearing inner ring 101 is provided with an annular track groove 111 extending along the circumferential direction, the annular track groove 111 and the plurality of limiting grooves 123 enclose a plurality of installation positions distributed at intervals along the circumferential direction, the rollers 103 correspond to the installation positions one by one, and the rollers 103 are limited in the corresponding installation positions.
The bearing inner ring 101 is fixedly sleeved on the outer circumferential wall of the crankshaft 300, and the outer circumferential wall of the bearing outer ring 102 is fixedly connected with the inner circumferential wall of the bearing mounting hole section 211 in an interference fit manner.
The upper end surface of the bearing outer ring 102 is abutted with the annular step surface 212, the lower end of the bracket 200 is fixedly connected with an end cover 400, and the lower end surface of the bearing outer ring 102 is abutted with the end cover 400; specifically, the end cap 400 is fixed to the lower end surface of the bracket 200 by screws.
The bearing assembly 100 of the embodiment cancels a retainer of a traditional bearing, and uses the limit groove 123 to limit the roller 103 from moving along the circumferential direction, so that the number of parts of the bearing assembly 100 is reduced, the structure of the bearing assembly 100 is simplified, friction between the roller 103 and the retainer is eliminated, friction noise is reduced, wear of the bearing assembly 100 is reduced, and friction heat of the bearing assembly 100 is reduced, and the embodiment is beneficial to improving the stability of matching among the bearing inner ring 101, the roller 103 and the bearing outer ring 102, and is beneficial to keeping the bearing assembly 100 in normal operation for a long time under the condition of complex stress; in addition, the cooperation of the outer peripheral wall of the bearing outer ring 102 of the embodiment and the inner peripheral wall of the bearing mounting hole section 211 can provide a radial limiting position for the bearing outer ring 102, which is beneficial to avoiding the deformation of the bearing outer ring 102, further beneficial to ensuring the stable structure and performance of the assembly 100, and is beneficial to reducing the requirement of the connection strength between the ring sections of the bearing outer ring 102, and beneficial to reducing the difficulty of the production and processing of the bearing assembly.
Preferably, the roller 103 is in a shape of a truncated kidney, and the axis of the roller 103 is in a vertical direction; the roller 103 is in line contact with the groove wall of the circular track groove 111, the generatrix of the roller 103 is in contact with the circular track groove 111, the groove wall surface of the limiting groove 123 is a cambered surface matched with the outer peripheral surface of the roller 103, and the roller 103 is in contact with the groove wall surface of the limiting groove 123. This further contributes to improving the stability of the fit of the bearing inner ring 101, the rollers 103 and the bearing outer ring 102, and the rollers 103 can adjust the angle and position adaptively when the bearing assembly is subjected to an overturning moment, thereby reducing the stress concentration of the rollers 103 and the vibration noise of the bearing assembly 100 during operation.
Preferably, the crankshaft 300 has a lubricating oil path 301 therein, the lubricating oil path 301 has an oil port penetrating to an outer circumferential wall of the crankshaft 300, the bearing inner ring 101 has a lubricating passage 112 penetrating from an inner circumferential wall to the annular roller groove 111, and the oil port communicates with the lubricating passage 112. Thus, lubricating oil can be delivered to the rollers 103 of the bearing assembly 100 through the lubricating oil path 301 in the crankshaft 300, so that the bearing inner ring 101, the rollers 103 and the bearing outer ring 102 can be well matched for lubrication, friction and mechanical wear of the bearing assembly 100 can be further reduced, operating noise of the bearing assembly 100 can be reduced, and long-term normal operation of the bearing assembly 100 can be guaranteed. Of course, it is preferable to provide a channel communicating with the oil port on the outer peripheral wall of the crankshaft 300, for example, the channel is an arc-shaped groove/annular groove extending in the circumferential direction, which is advantageous in facilitating smooth communication between the lubricating oil path 301 and the lubricating passage 112.
Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (11)
1. The bearing assembly comprises a bearing inner ring, a bearing outer ring and a plurality of rollers, wherein the bearing outer ring is arranged at the radial outer side of the bearing inner ring at intervals, the rollers are arranged between the bearing outer ring and the bearing inner ring in a rolling manner, and the rollers are distributed along the circumferential direction of the bearing assembly;
the method is characterized in that:
the bearing outer ring is formed by connecting at least two ring segments end to end;
the outer circumferential wall of the bearing inner ring is provided with an annular raceway groove extending along the circumferential direction, the inner circumferential wall of the bearing outer ring is provided with a plurality of limiting grooves distributed at intervals along the circumferential direction, the annular raceway groove and the limiting grooves enclose a plurality of mounting positions distributed at intervals along the circumferential direction, each roller corresponds to each mounting position one by one, and the rollers are limited in the corresponding mounting positions.
2. The bearing assembly of claim 1, wherein:
the bearing outer ring is provided with a first ring segment and a second ring segment, the first ring segment is provided with a first positioning protrusion facing the second ring segment, the second ring segment is provided with a first positioning groove facing away from the first ring segment, the first positioning protrusion is inserted into the first positioning groove, and the first positioning protrusion and the first positioning groove are matched to limit the first ring segment to axially dislocate relative to the second ring segment along the bearing assembly.
3. The bearing assembly of claim 2, wherein:
the first ring segment is provided with a first combining surface, the second ring segment is provided with a second combining surface, the first combining surface is attached to the second combining surface, the first positioning protrusion protrudes from the first combining surface to the second combining surface, and the first positioning groove is recessed from the second combining surface to the first combining surface.
4. The bearing assembly of claim 2, wherein:
the first ring section and the second ring section have the same structure.
5. The bearing assembly according to any of claims 1 to 4, wherein:
the roller is in a waist table shape, the axis of the roller is along the axial direction of the bearing assembly, the roller is in line contact with the groove wall of the annular roller way groove, and the roller is in contact with the groove wall of the limiting groove.
6. The compressor, including support and pivot, the support has bearing mounting hole, its characterized in that:
the bearing assembly of any one of claims 1 to 5, further comprising a bearing inner ring fixedly sleeved on the rotating shaft, and a bearing outer ring fixedly installed in the bearing installation hole, wherein an inner peripheral wall of the bearing installation hole is matched with an outer peripheral wall of the bearing outer ring.
7. The compressor of claim 6, wherein:
the periphery wall of the bearing outer ring is in interference fit with the inner peripheral wall of the bearing mounting hole.
8. The compressor of claim 6 or 7, wherein:
along the axial direction of the bearing assembly, a step surface is arranged on one side of the bearing mounting hole of the support, an end cover is fixedly connected to the other side of the bearing mounting hole of the support, and the bearing outer ring is extruded between the step surface and the end cover.
9. The compressor of claim 6 or 7, wherein:
the bearing inner ring is provided with a lubricating channel which penetrates through the annular roller way groove from the inner peripheral wall, a lubricating oil path is arranged in the rotating shaft and penetrates through the outer peripheral wall of the rotating shaft, and the lubricating oil path is communicated with the lubricating channel.
10. The compressor of claim 9, wherein:
the outer peripheral wall of the rotating shaft is provided with a groove, or the inner peripheral wall of the bearing inner ring is provided with a groove;
the lubricating oil passage is communicated with the lubricating channel through the channel.
11. An electrical appliance, characterized by:
comprising a bearing assembly according to any of claims 1 to 5; or comprising a compressor as claimed in any one of claims 6 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120707277.3U CN214945750U (en) | 2021-04-07 | 2021-04-07 | Bearing assembly, compressor and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120707277.3U CN214945750U (en) | 2021-04-07 | 2021-04-07 | Bearing assembly, compressor and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214945750U true CN214945750U (en) | 2021-11-30 |
Family
ID=79047795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120707277.3U Active CN214945750U (en) | 2021-04-07 | 2021-04-07 | Bearing assembly, compressor and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214945750U (en) |
-
2021
- 2021-04-07 CN CN202120707277.3U patent/CN214945750U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9541080B2 (en) | Mounting arrangement for an oil pump in a refrigeration compressor | |
| EP1815138B1 (en) | Hermetic compressor | |
| CN103166361A (en) | Bearing device and electric motor having the same | |
| US20170138395A1 (en) | Ball bearing assembly | |
| CN214945750U (en) | Bearing assembly, compressor and electric appliance | |
| CN211599285U (en) | Flange linear bearing | |
| CN215633764U (en) | Roller ring for rotor compressor, compressor and air conditioner | |
| CN113107969A (en) | Rotor assembly and machining method thereof, compressor and air conditioning equipment | |
| US10428868B2 (en) | Ball bearing assembly | |
| CN217107355U (en) | Compression mechanism of compressor | |
| CN112943616B (en) | Compressor and air conditioner with same | |
| CN110566495B (en) | Bearing structure of ultra-thin micropump and ultra-thin micropump | |
| CN112943609A (en) | Roller ring for rotor compressor, compressor and air conditioner | |
| CN102251953B (en) | Pump body structure of compressor and compressor with same | |
| CN209875464U (en) | Scroll compressor having a plurality of scroll members | |
| JP2013104328A (en) | Hermetic compressor | |
| CN110966300A (en) | Rolling bearing and assembling method thereof | |
| CN214742049U (en) | Scroll compressor and air conditioner | |
| CN205895600U (en) | Compressor pump and compressor | |
| CN109163016A (en) | Tilting bush formula oiliness bearing and motor | |
| CN216278471U (en) | Automobile-used compressor and split type axle sleeve thereof | |
| CN218563841U (en) | Compressor, pump body subassembly and electrical equipment | |
| CN112664452B (en) | Compressor | |
| JPH10252654A (en) | Thrust roller bearing device | |
| CN219107200U (en) | Motor for controlling axial movement of rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |