| 摘要 |
PURPOSE: To make it possible to protect a top board from any damage even if the top board is subjected to such actions as clamping force, impact or load, and support the top board stably and definitely when adjusting the elevation of the top board on a frame with a support bolt and supporting the top board so that its level may be adjustable. CONSTITUTION: A top board 7, which covers the top, is loaded on the top of a frame 2 of a sanitary system unit. The bottom of the top board 7 is supported with a level adjusting bolt 15 to the frame. The top board 7 is threadably screwed and pulled downward from the frame so that the top board 7 may be mounted to and fixed with the top of the frame 2. The bolt 15 is arranged to be a flat-head bolt so that its head may project from the top of the frame 2 where the bottom of the top board 7 is placed in contact with the head 15b of the bolt at a plurality of locations and supported thereon. |
