JPS5498668A - Date dial driving device of electronic watch - Google Patents

Date dial driving device of electronic watch

Info

Publication number
JPS5498668A
JPS5498668A JP15644277A JP15644277A JPS5498668A JP S5498668 A JPS5498668 A JP S5498668A JP 15644277 A JP15644277 A JP 15644277A JP 15644277 A JP15644277 A JP 15644277A JP S5498668 A JPS5498668 A JP S5498668A
Authority
JP
Japan
Prior art keywords
gear
date dial
date
turning
month
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
JP15644277A
Other languages
Japanese (ja)
Inventor
Tatsuo Nitta
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 JP15644277A priority Critical patent/JPS5498668A/en
Publication of JPS5498668A publication Critical patent/JPS5498668A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C9/00—Electrically-actuated devices for setting the time-indicating means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To perform sure correction of date dial by turning the date dial which is subjected to month end automatic correction by a step motor, through external operation while correcting its position with a cam or the like by changing wheel train. CONSTITUTION:At normal times, a date dial 613 is turned by a step motor via control part which has date-, month, year counters and a month end discriminating circuit by an AM zero hour signal. When a crown 419 is pushed and turned, turning of a gear 43 by a clutch wheel 420, etc. is transmitted to the wheel train which is changed over by the driving transmission change device of a differential mechanism formed by stationary gears 416c, 810, rotating gear 416a, sun gear 416d, planetary gear 416b of the gear 416a, etc. The date dial 613 is then corrected by the gear 810. Unnecessary turning of the date dial 613 at the impact is prevented by the cam 425 of this gear 43 and a position defining lever 426.
JP15644277A 1977-12-27 1977-12-27 Date dial driving device of electronic watch Pending JPS5498668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15644277A JPS5498668A (en) 1977-12-27 1977-12-27 Date dial driving device of electronic watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15644277A JPS5498668A (en) 1977-12-27 1977-12-27 Date dial driving device of electronic watch

Publications (1)

Publication Number Publication Date
JPS5498668A true JPS5498668A (en) 1979-08-03

Family

ID=15627833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15644277A Pending JPS5498668A (en) 1977-12-27 1977-12-27 Date dial driving device of electronic watch

Country Status (1)

Country Link
JP (1) JPS5498668A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5754885A (en) * 1980-08-18 1982-04-01 Konpurikashion Sa Electronic watch with analog display
WO1999034264A1 (en) * 1997-12-26 1999-07-08 Citizen Watch Co., Ltd. Electronic timepiece with calendar month-end non-correction device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137264A (en) * 1974-09-25 1976-03-29 Citizen Watch Co Ltd
JPS5235010U (en) * 1975-09-04 1977-03-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137264A (en) * 1974-09-25 1976-03-29 Citizen Watch Co Ltd
JPS5235010U (en) * 1975-09-04 1977-03-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5754885A (en) * 1980-08-18 1982-04-01 Konpurikashion Sa Electronic watch with analog display
WO1999034264A1 (en) * 1997-12-26 1999-07-08 Citizen Watch Co., Ltd. Electronic timepiece with calendar month-end non-correction device
US6278661B1 (en) 1997-12-26 2001-08-21 Citizen Watch Co., Ltd. Electronic timepiece with calendar month-end non-correction device

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