| 摘要 |
PURPOSE: A rotary oil damper is provided to ensure gentle rotation of a rotator by preventing sudden movement of the rotator due to the self weight or external forces. CONSTITUTION: A rotary oil damper comprises a casing(110) which is fixed on a base and accommodates oil, a rotating member(120) which is coupled to a hollow(111) of the casing on an end and to a rotator on the other, and a piston which is inserted in a coupling groove(123) and moved in the axial direction as being rotated along with the rotating member within the hollow of the casing. The piston pressurizes oil in the hollow of the casing by the axial motion. An air gap(g) is formed on the outer periphery of the piston and the inner periphery of the casing to allow the flow of oil. |
