| 摘要 |
<P>PROBLEM TO BE SOLVED: To appropriately maintain circumferential positions of first and second balls in a double-barreled ball cam mechanism. <P>SOLUTION: The double-barreled ball cam mechanism holds first and second balls 43a, 43b among first to third cam members 40, 41R, 41L, wherein a first retainer 50R regulating the position of the first ball 43a between the first and second cam members 40, 41R, and a second retainer 50L regulating the position of the second ball 43b between the first and third cam members 40, 41L, are integrally linked with first and second linking members 51, 52. Thereby, when one of the first and second balls 43a, 43b pushes one of the second and third cam members 41R, 41L in the axial line L direction, the circumferential position of the other of the first and second balls 43a, 43b is regulated to be in the same circumferential direction of the one, which enhances an operation response property of the double-barreled ball cam mechanism. <P>COPYRIGHT: (C)2012,JPO&INPIT |
