| 摘要 |
<p>PURPOSE: To eliminate difficult release of a locking member and difficult screwing of a female screw by making a ball socket provide a hollow shaft part, forming at least two rails and at least two tongue pieces on the end face side at the hollow shaft part, and forming an axial shoulder at the respective tongue pieces. CONSTITUTION: A locking nut 30 is screwed in a frame 26 and a ball 34 in an adjusting screw is snap-fittingly engaged into the recessed ball part 18 of a ball socket 16. A reflector 10, which is provided with scattered plates 11, is pushed in an arrow 35 direction, so that the end of a sleeve 13 is engaged into a groove 24 at a hollow shaft part 17, and a side bowed part 19 is supported by a stopper 36, which is mounted on the back of the reflector 10. A tongue piece 20 is snap-fittingly engaged with a locking part 14 at this position. A ball socket 16 is thus fixed axially and radially with respect to the reflector 10 using an adjusting screw 33. At the same time, respective rails 23 are forced into a member with a groove 28, so as to form a sliding guide. The nut 30 of the adjusting screw 33 and a female screw 31 are thus loaded in only the axial direction, and not loaded by any bending moment.</p> |
