| 摘要 |
PURPOSE:To simlplify the attachment and detachment of a cap by providing a temporarily tightening projection and the first projection with which the pawl for the skirt section of the cap is hooked and then the second projection spaced at a specified interval with the end face of the skirt section, on the external surface of a reservoir tank opening section. CONSTITUTION:A reservoir tank 14 is carried by hooking each of the pawls 23 of the skirt section 21 of a cap 20 on the temporarily tightending projection 24 of the reservoir tank 14 and temporarily tightening the cap 20 with the tank 14. Since the height of the projection 24 is reduced, the removal of the cap 20 is simple. To seal the tank 24 lafter it is lubricated, each of the pawls 23 to which the cap 20 is pressed down is hooked with the first projection 25. This hooking is elastically performed by the repulsive force of a diaphragm 22 that is inserted between the upper end face of the inner surface of the cap 20 and the opening section 14a of the tank 14 and is compressed. When the cap 20 is removed, the cap 20 can easily be removed by inserting the tip of a tool in the opening end of the skirt section 21 and pushing it upward by using the second projection 26 as a fulcrum. |
