CHRONOGRAPH MECHANISM, MOVEMENT, AND CLOCK
PROBLEM TO BE SOLVED: To provide a chronograph mechanism allowing the space saving.SOLUTION: The chronograph mechanism includes: a heart cam 20 connected to a needle of a chronograph display unit; a flyback hammer 25 for performing and cancelling the swinging-restriction of the heart cam 20 by rotat...
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Main Author | |
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Format | Patent |
Language | English Japanese |
Published |
01.10.2015
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide a chronograph mechanism allowing the space saving.SOLUTION: The chronograph mechanism includes: a heart cam 20 connected to a needle of a chronograph display unit; a flyback hammer 25 for performing and cancelling the swinging-restriction of the heart cam 20 by rotation; and a flyback lever 30 including a plurality of arms 33 for rotating the flyback hammer 25. The flyback lever 30 rotates the flyback hammer 25 with an arm 33. Here, the arm 33 used when the swinging-restriction of the heart cam 20 is performed is different from that when the swinging-restriction is cancelled. A rotation shaft 31 of the flyback lever 30 is located at the position of an equal distance from the rotation axes 21A, 21B, and 21C of a plurality of heart cams 20A, 20B, and 20C.
【課題】省スペース化が可能なクロノグラフ機構を提供する。【解決手段】クロノグラフ表示部の針に連結されたハートカム20と、回動によりハートカム20を躍制および躍制解除する復針ハンマー25と、復針ハンマー25を回動する複数のアーム33を備えた復針レバー30と、を有し、復針レバー30は、ハートカム20を躍制する時と、ハートカム20を躍制解除する時で、異なるアーム33が復針ハンマー25を回動する。復針レバー30の回動軸31は、複数のハートカム20A,20B,20Cの回転軸21A,21B,21Cから等距離の位置にある。【選択図】図3 |
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Bibliography: | Application Number: JP20140049370 |