JPS5577362A - Dc motor - Google Patents
Dc motorInfo
- Publication number
- JPS5577362A JPS5577362A JP14939478A JP14939478A JPS5577362A JP S5577362 A JPS5577362 A JP S5577362A JP 14939478 A JP14939478 A JP 14939478A JP 14939478 A JP14939478 A JP 14939478A JP S5577362 A JPS5577362 A JP S5577362A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- winding
- motor
- rotor
- yokes
- 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
- Dc Machiner (AREA)
Abstract
PURPOSE: To reduce the thickness of a DC motor in axial direction by closely contacting a magnetic field producing soft magnetic material with a permanent magnet so that the soft magnetic material is equivalent to the permanent magnet.
CONSTITUTION: A rotor 1 is formed by insulating the surface of a flat annular iron core 2 and closely winding armature winding 3 such as enameled wire or the like on the iron core 2. A rotary shaft 4 is coupled through a nonmagnetic material 5 with the rotor. Semi-circular magnetic path forming soft iron yokes 61, 62 are so provided on the upper and lower surfaces of the rotor that both the surfaces generate field magnetic flux of the same polarity. Nonmagnetic supports 71, 72 support through bearings 81, 82, respectively the shaft 4 by the yokes 61, 62, respectively. A permanent magnet 9 is magnetized with different polarities at right and left halves, and the yokes 61, 62 incorporate the same polarity as the surface facing with the permanent magnet. Brushes 11, 12 are urged via springs 13, 14, respectively to make direct contact with the winding 3. The insulating coating of the winding 3 at this contacted portion is separated to thereby cause the winding itself to function as the commutator. Since only one permanent magnet is sufficient for the motor thereby, it can reduce the thickness of the motor in axial direction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14939478A JPS5577362A (en) | 1978-11-30 | 1978-11-30 | Dc motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14939478A JPS5577362A (en) | 1978-11-30 | 1978-11-30 | Dc motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5577362A true JPS5577362A (en) | 1980-06-11 |
Family
ID=15474158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14939478A Pending JPS5577362A (en) | 1978-11-30 | 1978-11-30 | Dc motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5577362A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60241761A (en) * | 1984-03-30 | 1985-11-30 | Aisin Seiki Co Ltd | Thin dc motor |
US6388355B2 (en) | 1998-06-29 | 2002-05-14 | Mitsubishi Denki Kabushiki Kaisha | Motor for an electric power steering assembly |
-
1978
- 1978-11-30 JP JP14939478A patent/JPS5577362A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60241761A (en) * | 1984-03-30 | 1985-11-30 | Aisin Seiki Co Ltd | Thin dc motor |
JPH0570377B2 (en) * | 1984-03-30 | 1993-10-05 | Aisin Seiki | |
US6388355B2 (en) | 1998-06-29 | 2002-05-14 | Mitsubishi Denki Kabushiki Kaisha | Motor for an electric power steering assembly |
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