US 12,146,546 B2
Rotary damper
Kazumasa Nakaya, Shizuoka (JP)
Assigned to SOMIC MANAGEMENT HOLDINGS INC., Tokyo (JP)
Appl. No. 17/997,617
Filed by SOMIC MANAGEMENT HOLDINGS INC., Tokyo (JP)
PCT Filed Apr. 8, 2021, PCT No. PCT/JP2021/014901
§ 371(c)(1), (2) Date Oct. 31, 2022,
PCT Pub. No. WO2021/235129, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 2020-087493 (JP), filed on May 19, 2020.
Prior Publication US 2023/0265904 A1, Aug. 24, 2023
Int. Cl. F16F 9/04 (2006.01); F16F 9/14 (2006.01)
CPC F16F 9/145 (2013.01) [F16F 2232/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A rotary damper comprising:
a housing having a cylindrical inner chamber housing fluid in a liquid-tight manner and having a fixed vane formed in a wall shape along a radial direction in the inner chamber and blocking a flow of the fluid in a circumferential direction;
a rotor having, at an outer peripheral portion of a shaft, a movable vane dividing an inside of the inner chamber and turning while pressing the fluid to a fixed vane side;
at least two cells formed by the fixed vane and the movable vane in the inner chamber and having volumes increasing or decreasing according to a rotation direction of the movable vane;
multiple types of turning characteristic definers defining and changing different types of turning characteristics of the rotor by use of the fluid; and
a turning characteristic defining unit provided outside the housing and having the multiple types of turning characteristic definers and a multiple first definer communication paths each causing the fluid to flow to or from a corresponding one of the multiple types of turning characteristic definers,
wherein the housing has a multiple first externally-communicable paths each extending from at least one of the at least two cells and opened at an outer surface of the housing such that the fluid flows in the first externally-communicable path, and
in the turning characteristic defining unit, each of the multiple first definer communication paths is detachably connected to a corresponding one of the multiple first externally-communicable paths.