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JPS5473219A - Structure of rotor of step motor for watch and its preparation - Google Patents

Structure of rotor of step motor for watch and its preparation

Info

Publication number
JPS5473219A
JPS5473219A JP14073877A JP14073877A JPS5473219A JP S5473219 A JPS5473219 A JP S5473219A JP 14073877 A JP14073877 A JP 14073877A JP 14073877 A JP14073877 A JP 14073877A JP S5473219 A JPS5473219 A JP S5473219A
Authority
JP
Japan
Prior art keywords
rotor
working
seats
connecting portions
magnets
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
Application number
JP14073877A
Other languages
Japanese (ja)
Inventor
Masa Koyanagi
Masao Mafune
Hironori Nomura
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP14073877A priority Critical patent/JPS5473219A/en
Publication of JPS5473219A publication Critical patent/JPS5473219A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electromechanical Clocks (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE: To prevent racing, by shaping connecting portions among each portion material arranging a rotor in forms except circle.
CONSTITUTION: Rotor magnets 3 in materials, such as, Sm-Co, etc. and rotor rotary shafts l are connected through rotor seats 2 in high molecular materials, and connecting portions among the rotor rotary shafts 1 and the rotor seats 2 and connecting portions among the rotor seats 2 and the rotor magnets 3 are connected in shapes except circle. Thus, racing can be prevented even when clearances are formed to each connecting portion due to the contraction of the rotor seats 2. Working methods, such as, laser working, discharge working, broach working, grinding working, etc. are used for drilling the rotor magnets 3 in shapes except circle.
COPYRIGHT: (C)1979,JPO&Japio
JP14073877A 1977-11-25 1977-11-25 Structure of rotor of step motor for watch and its preparation Pending JPS5473219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14073877A JPS5473219A (en) 1977-11-25 1977-11-25 Structure of rotor of step motor for watch and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14073877A JPS5473219A (en) 1977-11-25 1977-11-25 Structure of rotor of step motor for watch and its preparation

Publications (1)

Publication Number Publication Date
JPS5473219A true JPS5473219A (en) 1979-06-12

Family

ID=15275553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14073877A Pending JPS5473219A (en) 1977-11-25 1977-11-25 Structure of rotor of step motor for watch and its preparation

Country Status (1)

Country Link
JP (1) JPS5473219A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103750U (en) * 1989-01-28 1990-08-17
FR2685567A1 (en) * 1991-12-20 1993-06-25 Valeo Systemes Dessuyage MAGNETO-DYNAMIC MACHINE ROTOR HAVING AT LEAST ONE MAGNETIC ZONE AND MAGNETO-DYNAMIC MACHINE, LIKE AN ENGINE WITHOUT A COLLECTOR, THUS EQUIPPED.
JP2006087174A (en) * 2004-09-14 2006-03-30 Seiko Instruments Inc Stepping motor and electronic apparatus using stepping motor
WO2007127658A3 (en) * 2006-04-25 2008-10-23 Smith Corp A O Rotor having lobed bore and method of assembling same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103750U (en) * 1989-01-28 1990-08-17
FR2685567A1 (en) * 1991-12-20 1993-06-25 Valeo Systemes Dessuyage MAGNETO-DYNAMIC MACHINE ROTOR HAVING AT LEAST ONE MAGNETIC ZONE AND MAGNETO-DYNAMIC MACHINE, LIKE AN ENGINE WITHOUT A COLLECTOR, THUS EQUIPPED.
JP2006087174A (en) * 2004-09-14 2006-03-30 Seiko Instruments Inc Stepping motor and electronic apparatus using stepping motor
WO2007127658A3 (en) * 2006-04-25 2008-10-23 Smith Corp A O Rotor having lobed bore and method of assembling same

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