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Patent Searching and Data


Title:
MOVEMENT OF ELECTRONIC TIMEPIECE AND ELECTRONIC TIMEPIECE
Document Type and Number:
WIPO Patent Application WO/2019/049587
Kind Code:
A1
Abstract:
In order to reduce the impact of magnetism on a step motor covered by an anti-magnetic plate in an electronic timepiece and a movement, the movement (3) of the timepiece (1) includes: the step motor (10) comprising a rotor (13), a stator (12) and a coil (11) in which a conductive wire is would around a coil winding core (11a); and the anti-magnetic plate (50) which covers at least part of the step motor (10); wherein the anti-magnetic plate (50) is provided with slits (51), (52) which are formed in parts thereof corresponding respectively to intersecting extension lines (16a), (16b) from both end portions (11c), (11d) of the coil winding core (11a), and which intersect the extension lines (16a), (16b), the slits (51), (52) being magnetic flow changing portions which change the flow of magnetism directed toward the coil winding core (11a) to a direction not directed toward the coil winding core (11a).

Inventors:
SAKATA, Shinnosuke (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
NAKADAIRA, Daisuke (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
MATSUMURA, Yoshikazu (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
MORITA, Shoichiro (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
HIROTA, Yusuke (1-12, Tanashicho 6-chome, Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
Application Number:
JP2018/029625
Publication Date:
March 14, 2019
Filing Date:
August 07, 2018
Export Citation:
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Assignee:
CITIZEN WATCH CO., LTD. (1-12, Tanashicho 6-chome Nishitokyo-sh, Tokyo 11, 〒1888511, JP)
International Classes:
G04C3/00; G04C3/14
Foreign References:
JP2016151429A2016-08-22
JPS5510532A1980-01-25
JPS58112991U1983-08-02
Attorney, Agent or Firm:
CREO LAW & INTELLECTUAL PROPERTY (Tokyo Tatemono Yaesu Bldg. 2F, 4-16 Yaesu 1-chome, Chuo-k, Tokyo 28, 〒1030028, JP)
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