JPS57153557A - Miniature motor for timepiece - Google Patents

Miniature motor for timepiece

Info

Publication number
JPS57153557A
JPS57153557A JP3884981A JP3884981A JPS57153557A JP S57153557 A JPS57153557 A JP S57153557A JP 3884981 A JP3884981 A JP 3884981A JP 3884981 A JP3884981 A JP 3884981A JP S57153557 A JPS57153557 A JP S57153557A
Authority
JP
Japan
Prior art keywords
rotor
starting
center
poles
starting direction
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
JP3884981A
Other languages
Japanese (ja)
Other versions
JPS6315825B2 (en
Inventor
Susumu Kubota
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.)
Rhythm Watch Co Ltd
Original Assignee
Rhythm Watch Co Ltd
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 Rhythm Watch Co Ltd filed Critical Rhythm Watch Co Ltd
Priority to JP3884981A priority Critical patent/JPS57153557A/en
Publication of JPS57153557A publication Critical patent/JPS57153557A/en
Publication of JPS6315825B2 publication Critical patent/JPS6315825B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H02K21/18—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having horse-shoe armature cores
    • H02K21/185—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having horse-shoe armature cores with the axis of the rotor perpendicular to the plane of the armature

Abstract

PURPOSE:To enhance the efficiency of a miniature motor for a timepiece and to eliminate the vibration of the motor by providing main and auxiliary pole pair which deflects the starting direction of a rotor in one direction by displacing the static central position of a rotor from the center of the magnetic center line of a stator and starting direction setting means. CONSTITUTION:Main poles 32, 34, 42, 44 are disposed at the position delayed in clockwise direction from auxiliary poles 31, 33, 41, 43, the static center position X of a rotor 20 is displaced in clockwise direction from the center P of the magnetic center lines Y, X of a stator, and the starting direction of the rotor 20 is deflected in counterclockwise direction. Starting direction setting means for rotating the rotor 20 in a direction opposite to the deflecting starting direction such as, for example, a reverse rotation preventing mechanism which does not rotate the rotor 20 in counterclockwise direction is provided. Since the starting direction of the rotor 20 is deflected in the counterclockwise direction by the main poles 32, 34, 42, 44 and the auxiliary poles 32, 33, 42, 43, the rotor 20 rotates while being braked to be started at the prescribed timing.
JP3884981A 1981-03-18 1981-03-18 Miniature motor for timepiece Granted JPS57153557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3884981A JPS57153557A (en) 1981-03-18 1981-03-18 Miniature motor for timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3884981A JPS57153557A (en) 1981-03-18 1981-03-18 Miniature motor for timepiece

Publications (2)

Publication Number Publication Date
JPS57153557A true JPS57153557A (en) 1982-09-22
JPS6315825B2 JPS6315825B2 (en) 1988-04-06

Family

ID=12536640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3884981A Granted JPS57153557A (en) 1981-03-18 1981-03-18 Miniature motor for timepiece

Country Status (1)

Country Link
JP (1) JPS57153557A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565955A (en) * 1982-10-29 1986-01-21 Rhythm Watch Co., Ltd. Synchronous motor device for timepiece
WO2009016023A1 (en) * 2007-08-02 2009-02-05 Microcomponents Ag Two-phase motor with multipolar magnet rotor, in particular for driving the indicator of an analog display

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09313257A (en) * 1996-05-29 1997-12-09 Koizumi Sangyo Kk Table

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565955A (en) * 1982-10-29 1986-01-21 Rhythm Watch Co., Ltd. Synchronous motor device for timepiece
WO2009016023A1 (en) * 2007-08-02 2009-02-05 Microcomponents Ag Two-phase motor with multipolar magnet rotor, in particular for driving the indicator of an analog display

Also Published As

Publication number Publication date
JPS6315825B2 (en) 1988-04-06

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