CN201893641U - Bearing positioning structure of medium-sized and small-sized motor - Google Patents
Bearing positioning structure of medium-sized and small-sized motor Download PDFInfo
- Publication number
- CN201893641U CN201893641U CN 201020654771 CN201020654771U CN201893641U CN 201893641 U CN201893641 U CN 201893641U CN 201020654771 CN201020654771 CN 201020654771 CN 201020654771 U CN201020654771 U CN 201020654771U CN 201893641 U CN201893641 U CN 201893641U
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Abstract
The utility model relates to a bearing positioning structure of a medium-sized and small-sized motor, which comprises a shaft, a front bearing, a bearing inner cover, a bearing outer cover and a rear bearing; the front bearing is arranged on a shaft extension end; the rear bearing is arranged on a non-shaft extension end; the outer rings of the front bearing and the rear bearing are respectively and axially positioned through the bearing outer cover and the bearing inner cover; the bearing positioning structure of the medium-sized and small-sized motor is characterized in that the outer ring of the front bearing is tightly clamped respectively through the bearing outer cover and the bearing inner cover; and spacing is left between the outer ring of the rear bearing and the bearing inner cover, and a washer is arranged between the outer ring of the bearing and the bearing outer cover. The bearing positioning structure of the medium-sized and small-sized motor has the advantages that: a motor driving end is fixed by the bearings, so that the axial extension of a motor shaft caused by the temperature rise of the motor is eliminated, the assembly precision with supporting equipment is improved, the fault possibility of the motor is reduced, and the reliability of the motor is improved.
Description
Technical field
The utility model relates to a kind of bearing location structure of middle and small motor.
Background technology
The bearing of motor is a support component important between stator and the rotor, is used for guaranteeing that motor gas-gap evenly reaches effects such as transmitting torque, and reasonably the bearing configuration is the assurance that motor has superperformance.Among Fig. 1, the bearing arrangement of existing middle and small motor is a deep groove ball bearing, non-driven-end bearing 2 is fixing, and fixed form is that the seam of internal bearing cover 4 and the seam of bearing end cover 3 are fixed the outer ring of bearing 2, and rotating shaft 8 upper bearing (metal) steps and back-up ring 7 are fixed the inner ring of bearing 2; Drive end bearing 1 moves about, bearing mounting structure is to leave the gap between the outer ring of the seam of internal bearing cover 4 and bearing 1, between the seam of fore bearing enclosing cover 3 and the bearing 1 wavy spring sheet 6 is housed, by rotating shaft step location, the outside is unfixing near the cast-aluminum rotor side for bearing inner race.Motor is when normal operation, and the motor shaft temperature can constantly raise until stable.At this moment, machine shaft expands along with the rising of electric machine temperature rise, because non-driven-end bearing is fixed, therefore, the expansion meeting of rotating shaft is that initial point extends to drive end with the rear bearing, thereby makes motor shaft extension end generation axial displacement, causes corollary equipment to be damaged easily.Therefore, be badly in need of the bearing location structure of existing middle and small motor is improved.
Summary of the invention
The purpose of this utility model is to solve the existing the problems referred to above of prior art middle (center) bearing location structure, and a kind of novel bearing location structure that is applied to middle and small motor is provided.
The utility model relates to a kind of bearing location structure of middle and small motor, comprise axle, fore bearing, internal bearing cover, bearing end cover and rear bearing, fore bearing is installed in the shaft extension end, rear bearing is installed in non-shaft stretching end, axial location is realized by bearing end cover, internal bearing cover respectively in the outer ring of fore bearing and rear bearing, and it is characterized in that: closely block by bearing end cover, internal bearing cover respectively the outer ring of described fore bearing; There are the gap in the outer ring and the internal bearing cover of described rear bearing, and between the bearing end cover packing ring are housed.
Described packing ring is a waveform bullet pad.
The utility model has the advantages that the motor-driven end bearing is fixed that what elimination motor shaft extension took place owing to electric machine temperature rise increases extends axially, the assembly precision of raising and corollary equipment, the possibility of minimizing motor generation electrical fault, the reliability of raising motor.
Description of drawings
Fig. 1 is the prior art constructions schematic diagram.
Fig. 2 is a structural representation of the present utility model.
Below in conjunction with drawings and Examples the utility model is elaborated.
Embodiment
Among the figure, a kind of bearing location structure of middle and small motor, comprise axle 10, fore bearing 11, internal bearing cover 14, bearing end cover 13 and rear bearing 12, fore bearing 11 is installed in shaft extension end 101, rear bearing 12 is installed in non-shaft stretching end 102, axial location is realized by bearing end cover 13, internal bearing cover 14 respectively in the outer ring of fore bearing 11 and rear bearing 12, and it is characterized in that: closely block by bearing end cover 13, internal bearing cover 14 respectively the outer ring of described fore bearing 11; There are the gap in the outer ring of described rear bearing 12 and internal bearing cover 14, and between the bearing end cover 13 packing ring 15 are housed.
Described packing ring 15 is a waveform bullet pad.
Present embodiment is fixed the fore bearing of motor-driven end, and its fixed form is the seam rigid bearing outer ring by the fore bearing exterior and interior cover, by pillow block rank and back-up ring rigid bearing inner ring; The rear bearing of motor anti-drive end moves about, and leaves the gap between bearing outer ring and the rear bearing inner cap mouth, and between the rear bearing enclosing cover wavy spring sheet is housed, and bearing inner race is located by the pillow block rank near that side of shaft extension end, and opposite side is unfixing.
During use, motor high speed rotating, fore bearing are fixed motionless by the inside and outside lid of bearing in the axial direction; Because non-bearing end is not fixed, rear bearing can move about in the axial direction, and what elimination motor shaft extension took place owing to electric machine temperature rise increases extends axially.
Below only expressed execution mode of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model patent scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
The utility model has the advantages that the motor-driven end bearing is fixed that what the elimination motor-shaft extending took place owing to electric machine temperature rise increases extends axially, the equipment precision of raising and corollary equipment, the possibility of minimizing motor generation electrical fault, the reliability of raising motor.
Claims (2)
1. a kind of bearing location structure of middle and small motor, comprise axle, fore bearing, internal bearing cover, bearing end cover and rear bearing, fore bearing is installed in the shaft extension end, rear bearing is installed in non-shaft stretching end, axial location is realized by bearing end cover, internal bearing cover respectively in the outer ring of fore bearing and rear bearing, and it is characterized in that: closely block by bearing end cover, internal bearing cover respectively the outer ring of described fore bearing; There are the gap in the outer ring and the internal bearing cover of described rear bearing, and between the bearing end cover packing ring are housed.
2. by a kind of bearing location structure of the described middle and small motor of claim 1, it is characterized in that: described packing ring is a waveform bullet pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020654771 CN201893641U (en) | 2010-12-13 | 2010-12-13 | Bearing positioning structure of medium-sized and small-sized motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020654771 CN201893641U (en) | 2010-12-13 | 2010-12-13 | Bearing positioning structure of medium-sized and small-sized motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893641U true CN201893641U (en) | 2011-07-06 |
Family
ID=44223110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020654771 Expired - Fee Related CN201893641U (en) | 2010-12-13 | 2010-12-13 | Bearing positioning structure of medium-sized and small-sized motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201893641U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738948A (en) * | 2012-07-11 | 2012-10-17 | 无锡市中达电机有限公司 | Motor bearing assembly structure for compressor |
| CN105356650A (en) * | 2015-11-29 | 2016-02-24 | 重庆元创汽车整线集成有限公司 | Gap compensation structure for heating of motor main shaft |
-
2010
- 2010-12-13 CN CN 201020654771 patent/CN201893641U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738948A (en) * | 2012-07-11 | 2012-10-17 | 无锡市中达电机有限公司 | Motor bearing assembly structure for compressor |
| CN105356650A (en) * | 2015-11-29 | 2016-02-24 | 重庆元创汽车整线集成有限公司 | Gap compensation structure for heating of motor main shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20121213 |