| 摘要 |
A rotary damper includes a dish-shaped housing having a depression surrounded by a cylindrical wall, a viscous fluid contained in the depression, a damping rotor accommodated in the viscous fluid, and a cap covering the dish-shaped housing with a shaft of the damping rotor projecting through a central hole thereof. The cylindrical wall is provided at the base of its external periphery with a sloped annular portion of downward increasing diameter. A lower edge portion of a circular wall of the cap is contacted with the slope of the sloped annular portion during welding of the cap to the dish-shaped housing. |
