JPS5668254A - Rotor molding die for miniature motor of watch - Google Patents

Rotor molding die for miniature motor of watch

Info

Publication number
JPS5668254A
JPS5668254A JP14516879A JP14516879A JPS5668254A JP S5668254 A JPS5668254 A JP S5668254A JP 14516879 A JP14516879 A JP 14516879A JP 14516879 A JP14516879 A JP 14516879A JP S5668254 A JPS5668254 A JP S5668254A
Authority
JP
Japan
Prior art keywords
rotor
cavity
yoke
rotor magnet
coil
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
JP14516879A
Other languages
Japanese (ja)
Inventor
Hiroshi Hashimoto
Haruji Ooyama
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.)
Seikosha KK
Original Assignee
Seikosha KK
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 Seikosha KK filed Critical Seikosha KK
Priority to JP14516879A priority Critical patent/JPS5668254A/en
Publication of JPS5668254A publication Critical patent/JPS5668254A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

Abstract

PURPOSE:To provide magnetic anisotropy partly only at a rotor magnet by burying a yoke having an excitation coil and radially facing a cavity corresponding to the rotor magnet at a die formed with the cavity. CONSTITUTION:Cavities 16a-16d of the shape corresponding to a rotor stem 4, a rotor magnet 2 and a rotor pinion 3 are formed at dies 8-10 made of nonmagnetic metal. A yoke 18 made of high dielectric metal material forming the same circle as the inner periphery of the cavity 16b at the end face 18a is buried in the die 9 as faced radially with the cavity 16b corresponding to the rotor magnet 2, and a coil 17 is wound on the yoke 18. Molten mixture of thermoplastic and ferromagnetic metal material having high magnetic anisotropic constant is filled through a predetermined spool 12, a runner 14 and a gate 15 into the respective cavities 16a- 16d, and the rotor 1 is integrally injection molded in the state that the coil 17 is electrically energized to magnetize the yike 18.
JP14516879A 1979-11-09 1979-11-09 Rotor molding die for miniature motor of watch Pending JPS5668254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14516879A JPS5668254A (en) 1979-11-09 1979-11-09 Rotor molding die for miniature motor of watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14516879A JPS5668254A (en) 1979-11-09 1979-11-09 Rotor molding die for miniature motor of watch

Publications (1)

Publication Number Publication Date
JPS5668254A true JPS5668254A (en) 1981-06-08

Family

ID=15378995

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14516879A Pending JPS5668254A (en) 1979-11-09 1979-11-09 Rotor molding die for miniature motor of watch

Country Status (1)

Country Link
JP (1) JPS5668254A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61206204A (en) * 1985-03-08 1986-09-12 Bridgestone Corp Magnet roll
JPH0617382U (en) * 1992-07-27 1994-03-04 東京電気株式会社 PM type stepping motor
EP0697762A1 (en) * 1994-08-18 1996-02-21 Moto Meter GmbH Stepping motor with prevailing axial rotor magnetisation
US20140362672A1 (en) * 2013-06-05 2014-12-11 Casio Computer Co., Ltd. Rotor manufacturing method, rotor, and timepiece having rotor
US11052588B2 (en) * 2019-04-08 2021-07-06 Gallant Micro. Machining Co., Ltd. Electrically-driven rotor iron core magnetic steel chamber dispensing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61206204A (en) * 1985-03-08 1986-09-12 Bridgestone Corp Magnet roll
JPH0469801B2 (en) * 1985-03-08 1992-11-09 Bridgestone Corp
JPH0617382U (en) * 1992-07-27 1994-03-04 東京電気株式会社 PM type stepping motor
EP0697762A1 (en) * 1994-08-18 1996-02-21 Moto Meter GmbH Stepping motor with prevailing axial rotor magnetisation
US20140362672A1 (en) * 2013-06-05 2014-12-11 Casio Computer Co., Ltd. Rotor manufacturing method, rotor, and timepiece having rotor
US11052588B2 (en) * 2019-04-08 2021-07-06 Gallant Micro. Machining Co., Ltd. Electrically-driven rotor iron core magnetic steel chamber dispensing device

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