JPS5571166A - Motor - Google Patents
MotorInfo
- 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
Links
Landscapes
- 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.
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)
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 |
-
1978
- 1978-11-20 JP JP14366478A patent/JPS5571166A/en active Pending
Cited By (5)
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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