引き打ちウォッチの開発
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概要
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A wide variety of many multi-functional watches using micro-computer ICs are now available for both digital and analog. On the other hand, there have been developed new types of watches which do not seek only functions but aim to help the human being relax and refresh. For these types of watches, we have noted minute repeater. The minute repeater, which had already been made in England late in the 17th centuries, indicates the time by striking gongs. It was a gentle tone mechanical watch. Nowadays, some premium-quality mechanical repeaters close to the works of art are made in Switzerland. However, in addition to their exteriors which are compared to the works of art, in the mechanical type, the mechanisms for indicating the time to the unit of minute are very complicated. Such repeaters are not suitable for mass-production and are very valuable products. In this situation, we made a study in order to realize a quartz minute repeater. Conventionally, there have been a lot of digital watches having functions of indicating the time by alarm or further having a variation of sounds, but those time sounds and alarms are electronic dull sounds without giving human gentleness. Thus, they are inferior to the sounds produced by the mechanical minute repeater. Then, we added the gentleness to the sound which does not exist in the conventional quartz watches and have developed a synthetic struck sound which is produced by electrical drive but is more natural one. As a result, we have succeeded in developing and commercializing a minute repeater of analog type, having a pointer moving over a sector by means of an electromechanical mechanism, and characterized by its appearance, operation and sound so as to give happiness whenever it is used and viewed. In this article, our developed minute repeater, Cal. 6760, will be described.
- 社団法人日本時計学会の論文
- 1992-06-25