JPS5553167A - Stepping motor - Google Patents

Stepping motor

Info

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
Application number
JP12387778A
Other languages
Japanese (ja)
Other versions
JPS6133343B2 (en
Inventor
Yoshiaki Motoki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12387778A priority Critical patent/JPS5553167A/en
Publication of JPS5553167A publication Critical patent/JPS5553167A/en
Publication of JPS6133343B2 publication Critical patent/JPS6133343B2/ja
Granted legal-status Critical Current

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
JP12387778A 1978-10-07 1978-10-07 Stepping motor Granted JPS5553167A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6448482U (en) * 1987-09-18 1989-03-24

Cited By (4)

* Cited by examiner, † Cited by third party
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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