| 摘要 |
A rotation cam device comprises an operation member having a contact part; a rotation cam which is in contact with a contact part of the operation member and has a cam profile for moving the operation member; and an elastic member for applying elastic force to the operation member in the direction that the contact part is in contact with the cam profile. The cam profile includes a first cam line spaced at a first distance from the rotation center of the rotation cam, a second cam line spaced at a second distance shorter than the first distance from the rotation center, a first conversion line connected from the second cam line to the first cam line, and a second conversion line which is connected from the first cam line to the second cam line and has one or more connection lines of a small straight line form of which the distance from the rotation center is longer than the second distance and is shorter than the first distance. |
