| 摘要 |
A rotary damper device includes a case in which a viscous fluid it filled and sealed, a rotation shaft relatively rotatable supported by the case, a rotation vane formed protruded from the rotation shaft, and a check valve mounted on a tip part of the rotation vane. A passage where the viscous fluid passes through is formed in the rotation vane. The check valve is provided with an opposing face part facing the passage and a frame body interposing the rotation vane. An elastic member for energizing the opposing face part of the check valve for closing the passage of the rotation vane is formed in either the rotation vane or the opposite side of the frame body of the opposing face part.
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