著者

花岡 賛 新井 利尚

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.42, pp.9-13, 1967-06-05 (Released:2017-11-09)

著者

日本時計学会

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.42, pp.81-82, 1967-06-05 (Released:2017-11-09)

著者

古山 徹 古谷 敏雄 竹本 巳喜男

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.141, pp.1-12, 1992-06-25 (Released:2017-11-09)

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Nowadays, as watches become multifunctional, the number of circuit components for watches are increasing. Like other watch makers, CITIZEN is also advancing medium and small scale productions of a wide variety of watches. For this purpose, cost reduction and automation of soldering, in particular, are of urgent necessity. For an actual automation, however, there are a number of items to be accomplished; 1) Positioning accuracy of the circuit components, and constancy of soldering amount, 2) Prevention of solder ball formation, 3) Establishment of soldering technique for the components which cannot be heated entirely, and 4) System switchable for meeting multi-lots scale productions. As the systems meeting the above items, there are two systems: a cell type robot soldering one and a line type point soldering one. An experimental research made on automation of soldering about these two systems is reported in the present paper. Further, a method of quick switching between both the systems only by replacing programs and special jigs is executed, intending to improve repeatability and reduce operating time. Our future task is to develop and introduce higher speed and better-switchable production system utilizing the merits of both the present systems.

著者

岡田 群司

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.43, pp.1-5, 1967-09-10 (Released:2017-11-09)

著者

茂木 正俊 高橋 理 塩原 研治

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.52, no.198, pp.13-22, 2008-06-10 (Released:2017-11-09)

参考文献数

2

被引用文献数

1

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This paper describes an air-viscous slow governor used in Spring Drive Sonnerie. Spring Drive movement makes no noise during hand movement. This is an ideal condition for installing mechanism for striking a bell. Japanese Buddhists' prayer bell "orin" was chosen for the sound source. Our objective was to create a sonnerie that offered the resonance and the clear tone of an orin. The reverberation resonance of an orin is produced by a hammer that strikes the bell at approximately 3-second interval. Along with the smoothly flowing second hand, the sound imparts a sense of slow and tranquil flow of time. To achieve the ringing tone of an orin amid a tranquil stillness, we developed a non-contact slow governor that made virtually no noise. The key to the "silent" slow governor is the wings around the rotor that produce resistance caused by viscosity of the air. This rotor turns at a constant speed at which the reactive force of the main spring and the viscous resistance caused by the air are balanced.

著者

笹岡 賢司

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.56, no.206, pp.25-33, 2012

参考文献数

4

著者

鈴木 紀寿

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.63, no.220, pp.42-44, 2019-06-15 (Released:2021-08-02)

参考文献数

1

著者

安達 光三 石黒 実

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.150, pp.43-56, 1994-09-20 (Released:2017-11-09)

著者

生川 東

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.22, pp.64-73, 1962

著者

鈴木 克己

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.62, no.219, pp.13-22, 2018-12-10 (Released:2020-12-15)

参考文献数

5

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By applying anti-reflection coating on both sides (front and back) of the sapphire windshield of the wristwatch, we prevent degradation of visibility, color tone and contrast of the dial and hand due to reflection. However, in achieving this coating, there were some problems, especially on the front side coating of the windshield. In this thesis, we will introduce what we have done to solve this problem.

著者

原 辰男

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.45, no.3, pp.1-9, 2001-09-12 (Released:2017-11-09)

被引用文献数

1

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SPRING DRIVE Cal.7R the world was heralded, and it was commercialized in December, 1999. Cal.7R is electron speed control style mechanical watch which raised the time accuracy taking the mainspring as a power by electronic speed control. ^<1)>We report necessary winding-up lock mechanism and stopping hand movement mechanism in Cal.7R development.

著者

小牧 昭一郎

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.50, no.195, pp.44-52, 2006-12-10 (Released:2017-11-09)

参考文献数

9

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In autumn this year, visiting Dr. George Daniels and some other watch and clock makers in England, author found all of them were trying to develop the historical grasshopper escapement, besides the main purpose of visit was a discussion with him about coaxial escapement. Then author has been awaken the whole of British horological interest was widely spread and related into the historical facts and researches as to John Harrison as so many columns had been in British Horological Journal. Even an event of "Evening of John Harrison" will be held this November. It would be due to a long and great history of horology of England. An explanation of grasshopper escapement mechanism is done, pointing out the merit of unnecessity of lubrication.

著者

望月 己義

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.53, no.201, pp.62-67, 2009

著者

三宅 哲也 小越 剛

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.61, no.216, pp.2-10, 2017

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<p>  We report why we decided to study new concept of wearable product and chose to use active matrix EPD for it. After we examine consumer acceptability for the concept, we found out key word "story". We named the new wearable product "Smart Canvas" which band and head can be seen as one canvas and show a "story" on the EPD screen. We developed new software platform which has multiple display layer based on different unit of time to show rich story.</p>

著者

小牧 昭一郎

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.50, no.194, pp.69-79, 2006-06-10 (Released:2017-11-09)

参考文献数

5

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筆者は約10年間,スイスWOSTEPと提携する時計学校で時計理論の講義を続けてきた.その中で一番奇異に感じることはスイスの指導する時計教育の中に,等時性理論のカリキュラムがほとんど含まれていないことである.反面,自分たちの教えるカリキュラムは等時性に重点を置く結果になった.学生たちはその辺に大変興味を持っている.それは時計の調整をしようとすればそれらが重要になるからであろう.なぜこのような違いが発生しているのか,この辺を考察してみた.

著者

安部 健次

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.26, pp.21-36, 1963-06-15 (Released:2017-11-09)

著者

(財)日本時計検査協会

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.53, pp.67-69, 1970-03-10 (Released:2017-11-09)

著者

菅沼 義方

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.39, pp.40-46, 1966-09-10 (Released:2017-11-09)

著者

山田 啓二

出版者

一般社団法人 日本時計学会

雑誌

日本時計学会誌 (ISSN:00290416)

巻号頁・発行日

vol.123, pp.3-13, 1987-12-20 (Released:2017-11-09)

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To express the condition of putting watch on the wrist, it seems that a phrase "this watch fits on wrist" is sometimes used among Japanese people. The present research started to survey the practical meaning of this common phrase. First of all, we observed one by one the wrist of one hundred males and females passing through a ticket gate of the station Tachikawa to survey the watch position put on theit wrists. According to this observation, the position "C" sa mentioned in Figure 1 of this text was determined as the representative position. Second, we selected at random fifty male and female employees of the Orient Watch Company to examine their wrist size and shape. As the result, we found out that there is a close mutual relation between the wrist size and shape, and body weight. Finally, we arrived at a following conclusion that we can make a proper presumption of general size and shape of wrist about the average people by examining their body weight.

著者

記載なし

出版者

一般社団法人 日本時計学会

雑誌

マイクロメカトロニクス (ISSN:13438565)

巻号頁・発行日

vol.48, no.3, pp.76-78, 2004