JPS5571166A - Motor - Google Patents

Motor

Info

Publication number
JPS5571166A
JPS5571166A JP14366478A JP14366478A JPS5571166A JP S5571166 A JPS5571166 A JP S5571166A JP 14366478 A JP14366478 A JP 14366478A JP 14366478 A JP14366478 A JP 14366478A JP S5571166 A JPS5571166 A JP S5571166A
Authority
JP
Japan
Prior art keywords
rotor
holes
cogging
stator plate
rotor magnets
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
JP14366478A
Other languages
Japanese (ja)
Inventor
Noboru Kataobe
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14366478A priority Critical patent/JPS5571166A/en
Publication of JPS5571166A publication Critical patent/JPS5571166A/en
Pending legal-status Critical Current

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  • Brushless Motors (AREA)

Abstract

PURPOSE:To reduce the cogging torque of a motor, by providing parts for causing cogging forces of phase inverse to that of cogging forces due to the magnetic nonuniformity of parts which face rotor magnets. CONSTITUTION:A motor comprises a rotor 6 having rotor magnets 1, driving coils 2 facing the rotor 6, a stator plate 3, etc. The stator plate 3 is provided with holes 13, 13' for fitting Hall elements 12, 12', which detect the positions of the rotor magnets 1 to switch the driving coils 2. Projections or magnetic pieces are provided on the stator plate 3 along straight lines extending on the holes 13, 13' and the center of gyration of the rotor magnets to cause a cogging torque of phase inverse to that of a cogging torque due to the holes 13, 13'. This results in eliminating the cogging force applied to the rotor 6 due to the holes 13, 13' of the stator plate 3.
JP14366478A 1978-11-20 1978-11-20 Motor Pending JPS5571166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14366478A JPS5571166A (en) 1978-11-20 1978-11-20 Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14366478A JPS5571166A (en) 1978-11-20 1978-11-20 Motor

Publications (1)

Publication Number Publication Date
JPS5571166A true JPS5571166A (en) 1980-05-29

Family

ID=15344052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14366478A Pending JPS5571166A (en) 1978-11-20 1978-11-20 Motor

Country Status (1)

Country Link
JP (1) JPS5571166A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978888U (en) * 1982-11-17 1984-05-28 パイオニア株式会社 motor
JPS61147759A (en) * 1984-12-17 1986-07-05 Sony Corp Brushless motor
JPS63174542A (en) * 1987-01-13 1988-07-19 Canon Inc Brushless motor
JPS6485557A (en) * 1987-09-28 1989-03-30 Akai Electric Brushless motor
US4894572A (en) * 1986-02-19 1990-01-16 Shicoh Engineering Co., Ltd. Disk-type brushless fan motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978888U (en) * 1982-11-17 1984-05-28 パイオニア株式会社 motor
JPS61147759A (en) * 1984-12-17 1986-07-05 Sony Corp Brushless motor
US4894572A (en) * 1986-02-19 1990-01-16 Shicoh Engineering Co., Ltd. Disk-type brushless fan motor
JPS63174542A (en) * 1987-01-13 1988-07-19 Canon Inc Brushless motor
JPS6485557A (en) * 1987-09-28 1989-03-30 Akai Electric Brushless motor

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