| 摘要 |
<p>A breakdown prevention mechanism for a rotary damper, where, when an upper rotor (12) is rotated in one direction, a communication path is formed between a valve body (16) and a lower rotor (15), lowering the pressure in a pressure chamber formed by the lower rotor and a lower housing (17) to facilitate the rotation. Also, in the breakdown prevention mechanism for a rotary damper, rotating the upper rotor (12) in the other direction causes a viscous fluid not to flow between the valve body and the lower rotor, and this increases the pressure in the pressure chamber formed by the lower rotor and the lower housing. As a result, the viscous fluid pushes down a relief valve (13) and a relief valve (14) against an elastic body (19) to prevent breakdown of the rotary damper.</p> |
