JPS5553167A - Stepping motor - Google Patents
Stepping motorInfo
- Publication number
- JPS5553167A JPS5553167A JP12387778A JP12387778A JPS5553167A JP S5553167 A JPS5553167 A JP S5553167A JP 12387778 A JP12387778 A JP 12387778A JP 12387778 A JP12387778 A JP 12387778A JP S5553167 A JPS5553167 A JP S5553167A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- liquid
- cylindrical magnet
- hollow part
- braking force
- 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.)
- Granted
Links
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
PURPOSE: To obtain a small size stepping motor which can be set in a stable stepping motion for a long time by giving a rotor braking force using viscous friction of a liquid charged and sealed in the hollow part equipped in a rotor.
CONSTITUTION: A coil 3 is provided to excite alternately inverse-polarly a stator eccentric to a rotor 1. The rotor 1 has a cylindrical magnet 11 made from ferrite magnet and a shaft 12 made from polyacetal, etc. where the cylindrical magnet 11 is supported and a hollow part 13 is formed solidly on the internal side of the cylindrical magnet 11. A proper quantity of liquid 14 such as oil is charged in the hollow part 13. Braking force acts the rotor 1 by means of viscous friction produced between the liquid 14 and the internal wall surface 15 of the hollow-part 13, the rotor 1 is restrained from skipping and vibrating and is set in a stable stepping motion.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12387778A JPS5553167A (en) | 1978-10-07 | 1978-10-07 | Stepping motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12387778A JPS5553167A (en) | 1978-10-07 | 1978-10-07 | Stepping motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5553167A true JPS5553167A (en) | 1980-04-18 |
JPS6133343B2 JPS6133343B2 (en) | 1986-08-01 |
Family
ID=14871574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12387778A Granted JPS5553167A (en) | 1978-10-07 | 1978-10-07 | Stepping motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5553167A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272672U (en) * | 1988-11-18 | 1990-06-04 | ||
JPH02136481U (en) * | 1989-04-18 | 1990-11-14 | ||
WO2000005799A1 (en) * | 1998-07-23 | 2000-02-03 | Askoll Holding S.R.L. | Electric motor with permanent-magnet rotor having viscous shaft coupling |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6448482U (en) * | 1987-09-18 | 1989-03-24 |
-
1978
- 1978-10-07 JP JP12387778A patent/JPS5553167A/en active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0272672U (en) * | 1988-11-18 | 1990-06-04 | ||
JPH02136481U (en) * | 1989-04-18 | 1990-11-14 | ||
WO2000005799A1 (en) * | 1998-07-23 | 2000-02-03 | Askoll Holding S.R.L. | Electric motor with permanent-magnet rotor having viscous shaft coupling |
US6335579B1 (en) | 1998-07-23 | 2002-01-01 | Askoll Holding S.R.L. | Electric motor with permanent-magnet rotor having viscous shaft coupling |
Also Published As
Publication number | Publication date |
---|---|
JPS6133343B2 (en) | 1986-08-01 |
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