| 摘要 |
PURPOSE:To simplify the form of a cam member by moving a link member in the longitudinal direction by means of a cam face on the outer periphery of a cam member. CONSTITUTION:The outside edge of a projecting part 12a provided on a cam member 12 is formed into a first cam face 13 in the diametral direction and a large-diameter second cam face 14 formed in the circumferential direction continuing to the first cam face 13. Further, the part other than the projecting part 12a is a small-diameter third cam face 15 which is formed in the circumferential direction being connected to the cam face 13. Rollers 22 are installed on the middle part and on the inner end part 21a of a link member 21, and is supported movably along an arc shaped center line A by means of an arc shaped guide 1b provided on a body 1a. |
