| 摘要 |
<p>PURPOSE: To make easy in formation and aesthetically much better in appear ance for a cap fixture screw without a head at the top by installing to a cap, a female screw with an oblique axis, engaging tapered end segment installed on the female screw to the shoulder installed on a supporter, pushing the facing planes to the supporter plane to generate a force and screwing the screw into the cap. CONSTITUTION: A cap 8 forms a conical facing plane 8f in an inner plane 8d and is supported by a support plane 4n of a base 4. In a projection part 8c of the cap 8, a female screw 8m is equipped along the second axis 11 extending in the inner space 8e. The second axis 11 has a specific angle to the first axis 10. When a screw 9 is screwed into the female screw 8m, the conical plane of the end segment 9b of the screw 9 is engaged with the outside fringe 7f of a shoulder 7e of the third part 7. As a result, the shoulder 7e applies a force to the screw and the cap 8 through the screw. This force causes the facing plane 8f of the cap 8 to be securely fixed to the support plane 4n of the base 4. Further, the screw 9 is positioned completely inside of the cap 8.</p> |
