| 摘要 |
<p>PURPOSE:To surely delay opening/closing operation by providing a shock absorber disposed in a main body or an opening/closing cover, a spring member disposed outside the shock absorber, for energizing a piston rod in the returning direction, and a member for pushing a piston rod when the opening/closing cover is closed. CONSTITUTION:When a cover member 2 is to be changed from an opened state to a closed state, the tip of an eccentric cam 12 serving as a pushing member presses a rod cap 11c of a shock absorber 11. As a result, a spring member 13 is contracted against resilient force thereof so as to absorb a shock at the time of closure of the cover member 2 and delay the closing operation. Meanwhile, when the rod cap 11c is pushed, a piston 11d is slidden inside a cylinder 11a toward the bottom wall of the cylinder so that the cover member 2 is slowly and securely closed by the effect of viscous resistance generated when viscous fluid 11g passes through an orifice groove 11h. In the case where the cover member 2 is released from the closed state, the cover member 2 can be smoothly opened by the resilient force of the spring member 13.</p> |
