| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotation range regulating mechanism for a rotary body, which can suppress generation of dust and emission of an abnormal sound. <P>SOLUTION: The rotation range regulating mechanism 31 regulates a rotation range of the rotary body that can rotate at an angle of 360° or more against a support 5. The rotation range regulating mechanism 31 includes a rock member 45 attached rockably to the support 5, a first regulating member 46 which comes in contact with the rock member 45 to regulate a rocking range of one side of the rock member 45, a second regulating member 47 which comes in contact with the rock member 45 to regulate a rocking range of the other side of the rock member 45, an engagement member 48 which is fixed to the rotary body and engaged with the rock member 45 and causes the rock member 45 to rock between a first regulation position at which the rock member 45 comes in contact with the first regulating member 46 and a second regulation position at which the rock member 45 comes in contact with the second regulating member 47, a first magnetic holding mechanism 51 which holds the rock member 45 at the first regulating position by a magnetic attractive force, and a second magnetic holding mechanism 52 which holds the rock member 45 at the second regulating position by a magnetic attractive force. <P>COPYRIGHT: (C)2013,JPO&INPIT |
