JPS55111653A - Small-sized motor - Google Patents
Small-sized motorInfo
- Publication number
- JPS55111653A JPS55111653A JP1781779A JP1781779A JPS55111653A JP S55111653 A JPS55111653 A JP S55111653A JP 1781779 A JP1781779 A JP 1781779A JP 1781779 A JP1781779 A JP 1781779A JP S55111653 A JPS55111653 A JP S55111653A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- boss
- poles
- end faces
- axial direction
- 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.)
- Pending
Links
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
PURPOSE: To prevent the occurrence of unturning trouble due to friction by magnetizing both end faces of the boss of the magnet rotor, in which the desired number of N- and S-poles are alternately developed on the outer circumferential face, in the axial direction and by producing a magnetic repulsive force in the axial direction.
CONSTITUTION: The N- and S-poles are alternately developed by magnetization on the outer circumferential face 11a of the magnet rotor 11 which is formed by molding a magnet ring and a rotor bush in a body with a plastic magnet and by pressing itself onto the rotary shaft 5, and both end faces 11b, 11c of the boss of the rotor 11 are also magnetized to develop N- or S-pole in the axial direction. Also the magnets 13, 14 are embedded in the end faces of the bearings 6, which are opposite to the end faces 11b, 11c of the boss, so that their poles the kinds of which are the same as those of the poles of the said boss are made opposite to the boss of rotor to form the magnetic repulsion producting means 12. In this way, since the rotor 11 is held at the center of bearing 6 by the magnetic repulsion that acts between the rotor 11 and the magnets 13, 14, the occurrence of unturning trouble due to friction between the bearing and the shaft can be prevented to obtain the normal characteristics.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1781779A JPS55111653A (en) | 1979-02-20 | 1979-02-20 | Small-sized motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1781779A JPS55111653A (en) | 1979-02-20 | 1979-02-20 | Small-sized motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55111653A true JPS55111653A (en) | 1980-08-28 |
Family
ID=11954279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1781779A Pending JPS55111653A (en) | 1979-02-20 | 1979-02-20 | Small-sized motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55111653A (en) |
-
1979
- 1979-02-20 JP JP1781779A patent/JPS55111653A/en active Pending
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