| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce operation sounds produced when an operation member rotatable within a prescribed rotation angle is rotated, and to reduce a load applied on a rotation regulating member regulating the rotatable range of the operation member. <P>SOLUTION: When the operation member 4 is rotated to the maximum rotatable angle, a buffer member 12 covering a first projection part 15a provided on the operation member abuts the side face of a first through-hole 11a provided to an exterior cover 11, then a second projection part 15b provided on the operation member abuts the side face of a second through-hole 11b provided to the exterior cover. <P>COPYRIGHT: (C)2012,JPO&INPIT |
