Rotary damper and method of manufacturing the same
By designing a combination space of the first and second recesses in the rotary damper to insert an elastomer sealing partition and the shaft clearance, and by using two oil circuits and a check valve to control the oil flow, the problems of reduced characteristics and weakened braking force caused by oil outflow are solved, and stable rotational performance is achieved.
CN117355682BActive Publication Date: 2026-06-12SOMIC ISHIKAWA INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOMIC ISHIKAWA INC
- Filing Date
- 2021-07-03
- Publication Date
- 2026-06-12
Smart Images
Figure CN117355682B_ABST
Abstract
A rotary damper is provided with a cylinder (10) having a partition wall (13), a rotor (20) having a shaft portion (21) facing the partition wall, a first recess (16) formed in a front end surface of the partition wall, an elastic body (40) provided in the first recess and sealing a gap between the partition wall and the shaft portion by being in close contact with the shaft portion, and a second recess (27) formed in a portion of an outer peripheral surface of the shaft portion that does not face the front end surface of the partition wall in operation, the second recess forming a space (50) into which the elastic body can be inserted without compressing the elastic body by having an opening portion face an opening portion of the first recess in assembly.
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