JPS5566775A - Shock proof construction of portable machine - Google Patents

Shock proof construction of portable machine

Info

Publication number
JPS5566775A
JPS5566775A JP13955978A JP13955978A JPS5566775A JP S5566775 A JPS5566775 A JP S5566775A JP 13955978 A JP13955978 A JP 13955978A JP 13955978 A JP13955978 A JP 13955978A JP S5566775 A JPS5566775 A JP S5566775A
Authority
JP
Japan
Prior art keywords
shaft
hand
rotating force
spring arm
portable machine
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
JP13955978A
Other languages
Japanese (ja)
Inventor
Munetaka Tamaru
Tatsuo Nitta
Minoru Natori
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 JP13955978A priority Critical patent/JPS5566775A/en
Publication of JPS5566775A publication Critical patent/JPS5566775A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electromechanical Clocks (AREA)

Abstract

PURPOSE: To certify accuracy under impacts by providing a shock absorbing spring between a shaft to which the pointer of a portable machine (watches, etc.) which has a pointer with an offset weight is attached and a component part which is linked with the shaft.
CONSTITUTION: In the second-hand wheel 25 fitted to a second-hand shaft 4 and linked with the second-hand 1 of a watch, etc., a toothed part 25a and a fitting ring 25b are connected with a spring member, for instance, a spring arm 25c, and the spring arm 25c has such strength that it is little deflected usually and is deflected only when it receives sudden rotating force. When the watch is subjected to an impact and strong rotating force is generated by the offset weight of the second- hand 1, the rotating force of the shaft 4 and the fitting ring 25b is absrobed by the spring arm 25c, therefore, the rotating force of the second-hand wheel 25 is transmitted to a rotor pinion via the fifth pinion and the fifth gear after weakened, and rotating errors do not occure even if magnetic coupling between a rotor permanent magnet and a stator is reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP13955978A 1978-11-13 1978-11-13 Shock proof construction of portable machine Pending JPS5566775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13955978A JPS5566775A (en) 1978-11-13 1978-11-13 Shock proof construction of portable machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13955978A JPS5566775A (en) 1978-11-13 1978-11-13 Shock proof construction of portable machine

Publications (1)

Publication Number Publication Date
JPS5566775A true JPS5566775A (en) 1980-05-20

Family

ID=15248075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13955978A Pending JPS5566775A (en) 1978-11-13 1978-11-13 Shock proof construction of portable machine

Country Status (1)

Country Link
JP (1) JPS5566775A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03175396A (en) * 1989-09-19 1991-07-30 Citizen Watch Co Ltd Display panel for clock and clock with display panel
JP2008003086A (en) * 2006-06-23 2008-01-10 Omega Sa Movable element of fine machine controlled in rotation by collision
JP2008058013A (en) * 2006-08-29 2008-03-13 Seiko Instruments Inc Escapement of mechanical timepiece
EP2765462A1 (en) * 2013-02-12 2014-08-13 ETA SA Manufacture Horlogère Suisse Anti-impact centre wheel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4823059B1 (en) * 1969-07-22 1973-07-11
JPS50147369A (en) * 1974-04-20 1975-11-26

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4823059B1 (en) * 1969-07-22 1973-07-11
JPS50147369A (en) * 1974-04-20 1975-11-26

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03175396A (en) * 1989-09-19 1991-07-30 Citizen Watch Co Ltd Display panel for clock and clock with display panel
JP2008003086A (en) * 2006-06-23 2008-01-10 Omega Sa Movable element of fine machine controlled in rotation by collision
JP2008058013A (en) * 2006-08-29 2008-03-13 Seiko Instruments Inc Escapement of mechanical timepiece
EP2765462A1 (en) * 2013-02-12 2014-08-13 ETA SA Manufacture Horlogère Suisse Anti-impact centre wheel
CN103984219A (en) * 2013-02-12 2014-08-13 Eta瑞士钟表制造股份有限公司 Shockproof centre wheel
JP2014153367A (en) * 2013-02-12 2014-08-25 Eta Sa Manufacture Horlogere Suisse Shockproof center wheel
CN106919038A (en) * 2013-02-12 2017-07-04 Eta瑞士钟表制造股份有限公司 Shockproof Centre Wheel
CN107885073A (en) * 2013-02-12 2018-04-06 Eta瑞士钟表制造股份有限公司 Shockproof clock and watch wheel

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