AU2011100982A4 - Motor resisting axial movement - Google Patents
Motor resisting axial movement Download PDFInfo
- Publication number
- AU2011100982A4 AU2011100982A4 AU2011100982A AU2011100982A AU2011100982A4 AU 2011100982 A4 AU2011100982 A4 AU 2011100982A4 AU 2011100982 A AU2011100982 A AU 2011100982A AU 2011100982 A AU2011100982 A AU 2011100982A AU 2011100982 A4 AU2011100982 A4 AU 2011100982A4
- Authority
- AU
- Australia
- Prior art keywords
- bearing
- rotor shaft
- rotor
- axial movement
- motor
- 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.)
- Ceased
Links
Abstract
Abstract The invention relates to a motor resisting axial movement, belonging to the technical field of motor manufacture. The motor comprises a stator and a rotor rotatably supported in the stator, the rotor comprises a rotor shaft and a yoke assembly fixed on the rotor shaft, the parts of the rotor shaft corresponding to both ends of the yoke assembly are respectively provided with a left bearing and a right bearing, the part of the rotor corresponding to the inner end of the left bearing is provided with a left step which contacts with the inner end of the inner ring of the left bearing, the part of the rotor shaft corresponding to the outer end of the left bearing is fitted with a left screw nut by screw threads, the rotor shaft between the yoke assembly and the inner end of the right bearing is provided with a bearing cap, and the part of the rotor shaft corresponding to the outer end of the right bearing is fitted with a right screw nut by screw threads. 'LO
Description
Description MOTOR RESISTING AXIAL MOVEMENT Technical field The invention relates to a motor resisting axial movement, belonging to the technical field of motor manufacture. Background art When a motor rotor is subject to an axial load, a certain degree of axial movement occurs between a rotor shaft and a stator, and such axial movement possibly causes axial displacement between a bearing used for rotating and supporting the rotor shaft and the stator and the rotor shaft, resulting in unreliable fit between the bearing and the rotor shaft and affecting the running performance of the motor. Summary of the invention The object of the invention is to provide a motor resisting axial movement, which has simple structure and no axial movement between a rotor shaft and a bearing, solving the problems of the prior art that axial movement possibly causes axial displacement between a bearing used for supporting a rotor shaft and a stator and a rotor shaft and results in unreliable fit between the bearing and the rotor shaft and thus affects the running performance of the motor. The above technical object of the invention is realized by the following technical scheme: the motor comprises a stator and a rotor rotatably supported in the stator, the rotor comprises a rotor shaft and a yoke assembly fixed on the rotor shaft, the parts of the rotor shaft corresponding to both ends of the yoke assembly are respectively the inner end of the left bearing is provided with a left step which contacts with the inner end of the inner ring of the left bearing, the part of the rotor shaft corresponding to the outer end of the left bearing is fitted with a left screw nut by screw threads, the rotor shaft between the yoke assembly and the inner end of the right bearing is provided with a bearing cap, and the part of the rotor shaft corresponding to the outer end of the right bearing is fitted with a right screw nut by screw threads. The outer ends of the left bearing and the right bearing are respectively fitted with the left screw nut and the right screw nut, and the inner ends of the left bearing and the right bearing are respectively limited by the left step and the bearing cap, thereby effectively preventing movement of the left bearing and the right bearing relative to the rotor shaft when suffering an axial load and ensuring the running performance of the motor. Preferably, the left bearing as well as the right bearing is a single row thrust ball bearing. Preferably, the outside diameter of the part of the rotor shaft fitting with the right screw nut is smaller than the outside diameter of the part of the rotor shaft fitting with the right bearing. Therefore, the invention has the advantages of simple structure and no axial movement between the rotor shaft and the bearing, etc. Brief description of the drawing Figure 1 is a structural diagram of the invention. Detailed description of the embodiment The technical scheme of the invention is further described bv combining the following embodiment and drawing. Embodiment 1: referring to figure 1, a rotor comprises a stator 10 and a rotor 11 rotatably supported in the stator 10, the rotor 11 comprises a rotor shaft 1 and a yoke assembly 2 fixed on the rotor shaft 1, the parts of the rotor shaft 1 corresponding to both ends of the yoke assembly 2 are respectively provided with a left bearing 3 and a right bearing 4, the part of the rotor shaft 1 corresponding to the inner end of the left bearing 3 is provided with a left step 5 which contacts with the inner end of the inner ring of the left bearing 3, the part of the rotor shaft 1 corresponding to the outer end of the left gearing 3 is fitted with a left screw nut 6 by screw threads, the rotor shaft 1 between the yoke assembly 2 and the inner end of the right bearing 4 is provided with a bearing cap 7, the part of the rotor shaft 1 corresponding to the outer end of the right bearing 4 is fitted with a right screw nut 8 by screw threads, the outside diameter of the part of the rotor shaft fitting with the right screw nut is smaller than the outside diameter of the part of the rotor shaft fitting with the right bearing, and the left bearing 3 as well as the right bearing 4 is a single row thrust ball bearing.
Claims (3)
1. A motor resisting axial movement, comprising a stator and a rotor rotatably supported in the stator, wherein the rotor comprises a rotor shaft and a yoke assembly fixed on the rotor shaft, and the parts of the rotor shaft corresponding to both ends of the yoke assembly are respectively provided with a left bearing and a right bearing, characterized in that the part of the rotor corresponding to the inner end of the left bearing is provided with a left step which contacts with the inner end of the inner ring of the left bearing, the part of the rotor shaft corresponding to the outer end of the left bearing is fitted with a left screw nut by screw threads, the rotor shaft between the yoke assembly and the inner end of the right bearing is provided with a bearing cap, and the part of the rotor shaft corresponding to the outer end of the right bearing is fitted with a right screw nut by screw threads.
2. The motor resisting axial movement according to claim 1, characterized in that the left bearing as well as the right bearing is a single row thrust ball bearing.
3. The motor resisting axial movement according to claim I or 2, characterized in that the outside diameter of the part of the rotor shaft fitting with the right screw nut is smaller than the outside diameter of the part of the rotor shaft fitting with the right bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2011100982A AU2011100982A4 (en) | 2011-08-09 | 2011-08-09 | Motor resisting axial movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2011100982A AU2011100982A4 (en) | 2011-08-09 | 2011-08-09 | Motor resisting axial movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2011100982A4 true AU2011100982A4 (en) | 2011-12-01 |
Family
ID=45465561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011100982A Ceased AU2011100982A4 (en) | 2011-08-09 | 2011-08-09 | Motor resisting axial movement |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2011100982A4 (en) |
-
2011
- 2011-08-09 AU AU2011100982A patent/AU2011100982A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |