JPS5568857A - Small-sized motor - Google Patents

Small-sized motor

Info

Publication number
JPS5568857A
JPS5568857A JP14108378A JP14108378A JPS5568857A JP S5568857 A JPS5568857 A JP S5568857A JP 14108378 A JP14108378 A JP 14108378A JP 14108378 A JP14108378 A JP 14108378A JP S5568857 A JPS5568857 A JP S5568857A
Authority
JP
Japan
Prior art keywords
magnet
magnetizing
motor
rotor
aeolotropy
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
JP14108378A
Other languages
Japanese (ja)
Inventor
Kiyoshi Ichikawa
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 TEC Corp
Original Assignee
Tokyo 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP14108378A priority Critical patent/JPS5568857A/en
Publication of JPS5568857A publication Critical patent/JPS5568857A/en
Pending legal-status Critical Current

Links

Landscapes

  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

PURPOSE: To enlarge output torque while miniaturize the device, by using a magnet manufactured by alternately magnetizing N and S at a rare earth magnet, which has aeolotropy in the radial direction, as a rotor magnet.
CONSTITUTION: This motor is provided with a cylindrical rotor magnet 3 mounted to a shaft 1 through a rotor spacer 2, stator coils 9, 9' wound on a bobbin 8 and stator yokes 6, 6' and 7, 7' constituted in four phases. The rotor magnet 3 is formed by a rare earth Co magnet that has aeolotropy in the radial direction while a magnetizing magnetic field is magnetized at 10% in value not more than 15kOe and energy product is not less than 100k gauss Oe, and the outer circumference is magnetized so that N poles 11 and S poles 12 alternately be built up in parallel with the shaft 1. Thus, a magnetizing device can be miniaturized while output torque increases, and this motor can be miniaturized.
COPYRIGHT: (C)1980,JPO&Japio
JP14108378A 1978-11-17 1978-11-17 Small-sized motor Pending JPS5568857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14108378A JPS5568857A (en) 1978-11-17 1978-11-17 Small-sized motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14108378A JPS5568857A (en) 1978-11-17 1978-11-17 Small-sized motor

Publications (1)

Publication Number Publication Date
JPS5568857A true JPS5568857A (en) 1980-05-23

Family

ID=15283803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14108378A Pending JPS5568857A (en) 1978-11-17 1978-11-17 Small-sized motor

Country Status (1)

Country Link
JP (1) JPS5568857A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4695419A (en) * 1983-09-28 1987-09-22 Tokuzo Inariba Manufacture of a miniature electric motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4695419A (en) * 1983-09-28 1987-09-22 Tokuzo Inariba Manufacture of a miniature electric motor

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