Title:
PISTON RING FOR VEHICULAR SHOCK ABSORBER
Document Type and Number:
Japanese Patent JP2021152396
Kind Code:
A
Abstract:
To provide a piston ring for a vehicular shock absorber that less likely causes the leakage of oil between an outer peripheral surface of a piston and an inner peripheral surface of the piston ring, and can suppress the lowering of attenuation force.SOLUTION: A piston ring 1 is disposed so that second axial direction end surfaces of respective ring portions 2a and 2b face each other, and circumferential direction gaps of the respective ring portions 2a and 2b are separated from each other at 180° in a circumferential direction. Thereby, when axial direction force F is applied, the circumferential direction length of circumferential direction gaps of the respective ring portions 2a and 2b are narrowed and inner diameters of the respective ring portions 2a and 2b are contracted, so that the energizing force of inner peripheral surfaces 61 of the respective ring portions 2a and 2b to an outer peripheral surface of a piston 12 is increased. Therefore, the leakage of oil less likely occurs between the inner peripheral surface 61 of the piston ring 1 and the outer peripheral surface of the piston, and the lowering of attenuation force can be suppressed.SELECTED DRAWING: Figure 2
Inventors:
ISHIDA JUNNOSUKE
WATANABE HITOSHI
WATANABE HITOSHI
Application Number:
JP2020053468A
Publication Date:
September 30, 2021
Filing Date:
March 24, 2020
Export Citation:
Assignee:
DAIDO METAL CO LTD
International Classes:
F16F9/32; F16J9/00
Attorney, Agent or Firm:
Hiroto Furuta