| 摘要 |
In a rotary damper, an outer lid is attached to an outer side surface of a casing. A first oil passage and a second oil passage are in respective communication. A first oil chamber and a second oil chamber are provided in parallel between the outer side surface of the casing and the inner side surface of the outer lid. A first check valve is provided in the first oil passage, a second check valve is provided in the second oil passage, and an orifice plate is movably provided so as to face both the first oil passage and the second oil passage.
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