JPS5579670A - Dc motor - Google Patents
Dc motorInfo
- Publication number
- JPS5579670A JPS5579670A JP15349478A JP15349478A JPS5579670A JP S5579670 A JPS5579670 A JP S5579670A JP 15349478 A JP15349478 A JP 15349478A JP 15349478 A JP15349478 A JP 15349478A JP S5579670 A JPS5579670 A JP S5579670A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- pole pieces
- bearing
- magnetic field
- poles
- 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
Abstract
PURPOSE: To obtain a DC motor with high efficiency and output through increasing the effective conductor length, by providing pole pieces which constitute the peripheral part and both sides of an annular maynetic field and are located at its poles and by placing the pole pieces in a rotor so that clearances are defined between the rotor and the peripheral part and both sides of the field system.
CONSTITUTION: Pole pieces 3 are provided at the poles of a magnetic field 2 made of a disc-shaped permanent magnet magnetized in the radial direction. The magnetic field 2 is secured on a bearing 4 mounted on a rotary shaft 5. A commutator 6 connected with a rotor 1 is mounted on the rotary shaft 5. The bearing 4 is coupled with an upper lid 7 held by a lower lid 8. The magnetic field 2 having the pole pieces 3 is set in the rotor 1 so that minute clearances are defined between the rotor 1 and the pole pieces and between the bearing 4 and the rotor. As a result, the effective conductor length which contributes to causing the torque is increased and the efficiency and output are raised.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15349478A JPS5579670A (en) | 1978-12-11 | 1978-12-11 | Dc motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15349478A JPS5579670A (en) | 1978-12-11 | 1978-12-11 | Dc motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5579670A true JPS5579670A (en) | 1980-06-16 |
Family
ID=15563777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15349478A Pending JPS5579670A (en) | 1978-12-11 | 1978-12-11 | Dc motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5579670A (en) |
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 |
WO2000062401A1 (en) * | 1999-04-12 | 2000-10-19 | Namiki Seimitsu Houseki Kabushiki Kaisha | Coil for small-sized motor and small-sized flat motor |
US6940206B2 (en) * | 2002-12-17 | 2005-09-06 | Kabushiki Kaisha Asaba | Coreless motor |
-
1978
- 1978-12-11 JP JP15349478A patent/JPS5579670A/en active Pending
Cited By (4)
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 | |
WO2000062401A1 (en) * | 1999-04-12 | 2000-10-19 | Namiki Seimitsu Houseki Kabushiki Kaisha | Coil for small-sized motor and small-sized flat motor |
US6940206B2 (en) * | 2002-12-17 | 2005-09-06 | Kabushiki Kaisha Asaba | Coreless motor |
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