Title:
PISTON RING FOR VEHICULAR SHOCK ABSORBER
Document Type and Number:
Japanese Patent JP2021152395
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 and an inner peripheral surface of a cylinder, 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, in the circumferential direction gaps of the respective ring portions 2a and 2b, vicinities of top portions of circumferential direction center portions on the second axial direction end surfaces of the other ring portions 2a and 2b enter, and the ring portions 2a and 2b try to increase outer diameters, thereby increasing the energizing force of outer peripheral surfaces 51 of the respective ring portions 2a and 2b with respect to an inner peripheral surface of a cylinder. Therefore, the leakage of oil less likely occurs between the outer peripheral surface 51 of the piston ring 1 and an inner peripheral surface of the cylinder, and the lowering of attenuation force can be suppressed.SELECTED DRAWING: Figure 2
Inventors:
ISHIDA JUNNOSUKE
WATANABE HITOSHI
WATANABE HITOSHI
Application Number:
JP2020053467A
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