| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a locking portion structure of a resin block which can prevent coming off and backlash of the resin block with a simple structure being easy to manufacture, and can attain the reduction in manufacturing cost. <P>SOLUTION: Locking legs 9 inserted into an engaging hole 7 of an optical axis adjusting shaft 3 are protrudingly provided in an operation knob 4. A front end side of the locking leg 9 is provided with a retaining protrusion 10 that protrudes from the engaging hole 7 and comes in contact with the edge portion of another end side of the engaging hole 7 at the surface thereof. The side wall of the base side of the locking leg 9 is provided with a cam piece 12 which is capable of flexurally deforming radially inward. The cam piece 12 is provided with a taper plane 13a, which inclines to the insertion direction and receives a reactive force by contact with one end portion of the engaging hole 7, when the front end portion of the locking leg 9 is inserted into the engaging hole 7. <P>COPYRIGHT: (C)2012,JPO&INPIT |
