CN202696333U - Axial rotor fixing structure - Google Patents
Axial rotor fixing structure Download PDFInfo
- Publication number
- CN202696333U CN202696333U CN 201220239382 CN201220239382U CN202696333U CN 202696333 U CN202696333 U CN 202696333U CN 201220239382 CN201220239382 CN 201220239382 CN 201220239382 U CN201220239382 U CN 201220239382U CN 202696333 U CN202696333 U CN 202696333U
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- CN
- China
- Prior art keywords
- ring
- bearing
- rotating shaft
- end cover
- end housing
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an axial rotor fixing structure. The axial rotor fixing structure comprises a rotating shaft, rotor cores, a stator, bearings, a front end cover and a back end cover, wherein an encoder is connected to the outer side of the back end cover; a first ring-shaped groove is formed on the inner surface of the front end cover, and provided with a check ring for holes; a second ring-shaped groove is formed on the external surface of the rotating shaft, and provided with a check ring for shafts; the check ring for the holes is arranged on the inner side of the bearing in the front end cover in a blocking manner; the check ring for the shafts is arranged on the outer side of the bearing in the front end cover in a blocking manner; and a wavy spring washer is arranged between the back end cover and the bearing. According to the axial rotor fixing structure provided by the utility model, the front end cover uses the check ring for holes, and the check ring for shafts is arranged on the rotating shaft, so that axial displacement of a motor is excellently controlled, so that the purpose of precise positioning is achieved.
Description
Technical field
The utility model relates to a kind of motor component, particularly a kind of rotor axial fixed structure.
Background technology
Stepping motor be a kind of be the actuator of angular displacement with electroporation, it can come the pilot angle displacement by the control impuls number, to reach the purpose of accurate location; Control simultaneously speed and the acceleration of electric machine rotation by the control impuls frequency, to reach the purpose of speed governing.Because it does not have accumulated error, stepping motor can be exported large torque under low-speed conditions, and rotation is level and smooth, noise is little, just can reach quite high positioning accuracy under open loop control.
Existing motor installs encoder additional at back end cover for motor usually, and dress encoder motor requires end play the smaller the better, and gap too unitary Item device is understood stuck or can not read signal.And the ball bearing of using in the prior art adopts the wavy spring packing ring to come bearing is applied suitable precompressed more, and the wavy spring packing ring has distortion and makes rotor that play axially arranged when axially exerting pressure, can not well control the axial displacement size of rotor.
The utility model content
The utility model technical issues that need to address are axial displacement sizes that existing motor can not well be controlled rotor, cause the encoder cisco unity malfunction.
For solving the problems of the technologies described above, the utility model provides a kind of rotor axial fixed structure, comprise rotating shaft, rotor core, stator, bearing, front end housing and rear end cap, described rotor core is installed in the rotating shaft, described stator is positioned at the rotor core outside, described stator one end and front end housing are tightly connected, the other end and rear end cap are tightly connected, described front end housing and rear end cap respectively by bearings in rotating shaft, the described rear end cap outside is connected with encoder, have the first ring connected in star at described front end housing inner surface, the porose back-up ring of using is installed in described first ring connected in star, have the second annular groove at described rotating shaft outer surface, in described the second annular groove shaft block ring is installed, described hole is inboard with the bearing of back-up ring gear in front end housing, and the bearing outside of described shaft block ring gear in front end housing also is provided with the wavy spring packing ring between described rear end cap and the bearing.
The utility model is by a kind of rotor axial fixed structure, and front end housing is used a shaft block ring with a hole back-up ring in the rotating shaft, well control motor axial displacement, reaches pinpoint purpose.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is front end housing structural representation of the present utility model;
Wherein, 1-rotating shaft, 2-rotor core, 3-stator, 4-bearing, 5-front end housing, 6-rear end cap, 7-encoder, 8-wavy spring packing ring, 9-hole back-up ring, 10-shaft block ring, 11-first ring connected in star, 12-the second annular groove.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in the figure, a kind of rotor axial fixed structure of the present utility model, comprise rotating shaft 1, rotor core 2, stator 3, bearing 4, front end housing 5 and rear end cap 6, described rotor core 2 is installed in the rotating shaft 1, described stator 3 is positioned at rotor core 2 outsides, described stator 3 one ends and front end housing 5 are tightly connected, the other end and rear end cap 6 are tightly connected, described front end housing 5 and rear end cap 6 are supported in the rotating shaft 1 by bearing 4 respectively, described rear end cap 6 outsides are connected with encoder 7, have first ring connected in star 11 at described front end housing 5 inner surfaces, porose with back-up ring 9 in described first ring connected in star 11 interior installations, have the second annular groove 12 at described rotating shaft 1 outer surface, in described the second annular groove 12 shaft block ring 10 is installed, bearing 4 inboards that described hole keeps off in front end housing 5 with back-up ring 9, described shaft block ring 10 bearing 4 outsides of gear in front end housing 5 also are provided with wavy spring packing ring 8 between described rear end cap 6 and the bearing 4.
In the prior art, when motor has axially loaded, and axial location requires to adopt the wavy spring packing ring to be difficult to the axial displacement of control rotor when very high.The utility model is by a kind of rotor axial fixed structure, and front end housing is used a shaft block ring with a hole back-up ring in the rotating shaft, well control motor axial displacement, reaches pinpoint purpose.
When with 0 ~ 200N power from without waveform spring washer side pressure axle, use the motor axial displacement 0.06 ~ 0.2mm of a kind of rotor axial fixed structure of the present utility model, our existing motor axial displacement is greatly about about 1.5 ~ 2mm, this rotor axial fixed structure, simple and reliable, easy to operate, be suitable for batch production, well control again axial displacement
, help to realize the specification requirement of dress encoder.
Claims (1)
1. rotor axial fixed structure, comprise rotating shaft (1), rotor core (2), stator (3), bearing (4), front end housing (5) and rear end cap (6), described rotor core (2) is installed in the rotating shaft (1), described stator (3) is positioned at rotor core (2) outside, described stator (3) one ends and front end housing (5) are tightly connected, the other end and rear end cap (6) are tightly connected, described front end housing (5) and rear end cap (6) are supported in the rotating shaft (1) by bearing (4) respectively, it is characterized in that: described rear end cap (6) outside is connected with encoder (7), have first ring connected in star (11) at described front end housing (5) inner surface, in described first ring connected in star (11), install porose with back-up ring (9), have the second annular groove (12) at described rotating shaft (1) outer surface, shaft block ring (10) is installed in described the second annular groove (12), bearing (4) inboard of back-up ring (9) gear in front end housing (5) used in described hole, bearing (4) outside of described shaft block ring (10) gear in front end housing (5) also is provided with wavy spring packing ring (8) between described rear end cap (6) and the bearing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239382 CN202696333U (en) | 2012-05-25 | 2012-05-25 | Axial rotor fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220239382 CN202696333U (en) | 2012-05-25 | 2012-05-25 | Axial rotor fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696333U true CN202696333U (en) | 2013-01-23 |
Family
ID=47551890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220239382 Expired - Fee Related CN202696333U (en) | 2012-05-25 | 2012-05-25 | Axial rotor fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696333U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836347A (en) * | 2015-05-28 | 2015-08-12 | 湖州越球电机有限公司 | Low-noise motor structure and denoising method |
| CN105099059A (en) * | 2015-08-12 | 2015-11-25 | 浙江工业大学 | Measures for preventing outer rotor fan rotor from falling |
| CN107612192A (en) * | 2017-10-24 | 2018-01-19 | 江门市力士达泵业制造有限公司 | A kind of electric machine structure for immersible pump |
| CN107859637A (en) * | 2017-10-24 | 2018-03-30 | 江门市力士达泵业制造有限公司 | A kind of well immersible pump |
-
2012
- 2012-05-25 CN CN 201220239382 patent/CN202696333U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836347A (en) * | 2015-05-28 | 2015-08-12 | 湖州越球电机有限公司 | Low-noise motor structure and denoising method |
| CN105099059A (en) * | 2015-08-12 | 2015-11-25 | 浙江工业大学 | Measures for preventing outer rotor fan rotor from falling |
| CN107612192A (en) * | 2017-10-24 | 2018-01-19 | 江门市力士达泵业制造有限公司 | A kind of electric machine structure for immersible pump |
| CN107859637A (en) * | 2017-10-24 | 2018-03-30 | 江门市力士达泵业制造有限公司 | A kind of well immersible pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20160525 |