| 摘要 |
PROBLEM TO BE SOLVED: To provide a retrograde display mechanism which enables an operation cam to reverse through a three-dimensional structure of the operation cam and an operation lever, a movement with the mechanism, and an analog timepiece.SOLUTION: A retrograde display mechanism 1 of a movement and an analog timepiece includes a return guide step part 45 which allows a cam follower 51a to return to a position where the cam follower abuts on a large-diameter region 44c from a position where the cam follower abuts on a minimum-diameter part 44b when an operation cam 40 which can be displaced in a thickness direction H relatively to an operation lever 50 having a cam arm part 51 including the cam follower 51a and has a gradual increase cam surface 44 is rotated in a reverse direction F2. The operation lever 50 has a first three-dimensional engagement structure part 53 at the cam arm part 51, and the operation cam 40 has a second three-dimensional engagement structure part 46 which engages the first three-dimensional engagement structure part 53 to change a relative position in the thickness direction H so as to guide the cam follower 51a to the return guide step part 45 when the operation cam 40 is rotated in the reverse direction F2. |
