JPS55111653A - Small-sized motor - Google Patents

Small-sized motor

Info

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
Application number
JP1781779A
Other languages
Japanese (ja)
Inventor
Hidehiko Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1781779A priority Critical patent/JPS55111653A/en
Publication of JPS55111653A publication Critical patent/JPS55111653A/en
Pending legal-status Critical Current

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
JP1781779A 1979-02-20 1979-02-20 Small-sized motor Pending JPS55111653A (en)

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)

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