SWITCHING DEVICE AND WATCH

• Main Author: UENO MASATO
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; ELECTRONIC TIME-PIECES; EMERGENCY PROTECTIVE DEVICES; HOROLOGY; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; MECHANICALLY-DRIVEN CLOCKS OR WATCHES; PHYSICS; RELAYS; SELECTORS; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS

To provide a switching device in which potential difference corrosion can be prevented with simple structure, and a watch with the same.SOLUTION: The switching device comprises: a metallic operation shaft 10 slidably fitted to a through-hole 8 of a wristwatch case 1; a hard synthetic resin-made fixed part 11 fixed to an outer end part of the operation shaft 10; and a button head part 12 into which the fixed part 11 is fitted, and which is fixed in a non-contact condition to the operation shaft 10, and is formed of metal different from the operation shaft 10. The switching device therefore has structure in which the hard synthetic resin fixed part 11 fixed to the outer end part of the operation shaft 10 is engaged with the inside of the button head part 12, so that the structure is simple, and the operation shaft 10 and the button head part 12 are not in contact with each other, and accordingly a potential difference corrosion due to an electrical contact condition of the operation shaft 10 and the button head part 12 can be surely preferably prevented even when the operation shaft 10 and the button head part 12 are formed of metal different from each other.SELECTED DRAWING: Figure 1 【課題】 簡単な構造で、電位差腐食を防ぐことができるスイッチ装置およびそれを備えた時計を提供する。【解決手段】 腕時計ケース１の貫通孔８にスライド可能に取り付けられる金属製の操作軸１０と、この操作軸１０の外端部に固着された硬質の合成樹脂製の固定部１１と、この固定部１１が嵌め込まれて操作軸１０に対して非接触状態で固定され、かつ操作軸１０と異なる金属で形成された釦頭部１２と、を備えている。従って、操作軸１０の外端部に固着された硬質の合成樹脂製の固定部１１を釦頭部１２の内部に嵌め込んだ構造であるから、構造が簡単で、かつ操作軸１０と釦頭部１２とが相互に接触することがないため、操作軸１０と釦頭部１２とが異なる金属で形成されていても、操作軸１０と釦頭部１２との電気的接触状態による電位差腐食を確実にかつ良好に防ぐことができる。【選択図】 図１