Title:
SHOCK ABSORBER
Document Type and Number:
Japanese Patent JPS6121439
Kind Code:
A
Abstract:
PURPOSE:To reduce sliding friction and to prevent the inner peripheral surface of a cylinder from being damaged by disposing a surface reforming layer on the inner peripheral surface of a cylinder member of a shock absorber, in which a piston member is slidably inserted. CONSTITUTION:A shock absorber 1 includes a piston member 13 integral with a piston rod 12, which is inserted in a cylinder member 11. The piston member 13 is slided along the inner peripheral surface of the cylinder member 11 through a piston ring fitted to the outer periphery of a main body 14. In this case, a surface hardening layer 20 is formed on the inner peripheral surface of the cylinder member 11 formed by a steel pipe, which the piston member 13 is brought into sliding contact with. The surface hardening layer 20 may be preferably a layer plated with chromium. Besides, a layer plated with nickel, a soft nitriding layer, a cementation layer, a boron layer or quenching hardening layer may be used. The surface hardening layer 20 may include a solid lubricating layer.
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Inventors:
UEDA HIROSHI
FUKUOKA TATSUHIKO
FUKUOKA TATSUHIKO
Application Number:
JP14137084A
Publication Date:
January 30, 1986
Filing Date:
July 10, 1984
Export Citation:
Assignee:
TAIHO KOGYO CO LTD
International Classes:
F16F9/32; F16J10/04; (IPC1-7): F16J10/04
Domestic Patent References:
| JPS55104138U | 1980-07-21 | |||
| JPS5143326A | 1976-04-14 | |||
| JPS5785951A | 1982-05-28 | |||
| JPS5861940U | 1983-04-26 |
Attorney, Agent or Firm:
Aoki Akira
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