| 摘要 |
PURPOSE: A pushbutton using door equipment is provided to reduce the abrasion of a joint hole by manufacturing a lower board with stainless. CONSTITUTION: A protrusion(7) clamps a lower board(2) and is installed on the side of the main body. A fixing hole(4) is fixed with the protrusion. A groove(6) is installed in the lower part of the main body. The lower board and the main body are formed tighter through the groove. A joint hole(3) is protruded from the bottom of the lower board and is coupled with a fastening unit through a screw. The protruded join hole prevent the lower board from wrenched. |
