| 摘要 |
<p>PROBLEM TO BE SOLVED: To bring about smooth tilting motion of a tilting member, by causing a spherical body part of an intermediate connection member threadably fitted with an aiming screw to make turning motion relative to a ball bearing supported by the tilting member with the tilting of the tilting member. SOLUTION: A spherical body part 22 of an intermediate connection member 20 is fitted in a recess 30 of a ball bearing 26 and rotatably supported by the bearing 26. Further, the ball bearing 26 is supported by supporting parts 3C, 3S of a reflector 1. That is, because a part-to-be-supported 28 of the ball bearing 26 has a structure substantially same as that of a part-to-be-supported 12 of a ball bearing 10, when the part-to-be-supported 28 is inserted from the rear into supporting holes 5C, 5S of the supporting parts 3C, 3S, an engagement step part of an engagement piece 35 engages with rearside opening edges of the supporting holes 5C, 5S, and the ball bearing 26 is supported by the supporting parts 3C, 3S. A groove-to-be-guided 23 of the member 20 is slidably engaged with a guide rail 36. At this point, an elastic contact piece 23a makes elastic contact with the rail 36, causing no backlash between the groove 23 and the rail 36 and therefore a smooth movement of the member 20 is achieved.</p> |
