Title:
HYDRAULIC BUFFER
Document Type and Number:
Japanese Patent JP2009236243
Kind Code:
A
Abstract:
To form a bypass passage in a piston rod without reducing strength of the piston rod in a hydraulic buffer.
In this hydraulic buffer 10, the bypass passage 51 extending in the longitudinal direction of the piston rod 13 is formed in the outer surface of the small diameter portion 13B of the piston rod 13, and also the shoulder portion 13C of the piston rod 13 is tapered. A stopper piece 80 is provided with a tapered inner peripheral portion 81 seated on the tapered shoulder portion 13C of the piston rod 13, and channels 91, 92 communicating with the bypass passage 51 of the piston rod 13 and opened into the oil chamber 12A of a cylinder 12.
Inventors:
NAITO TSUTOMU
ENDO YUTAKA
KAKITA SHOTA
ENDO YUTAKA
KAKITA SHOTA
Application Number:
JP2008084381A
Publication Date:
October 15, 2009
Filing Date:
March 27, 2008
Export Citation:
Assignee:
SHOWA CORP
International Classes:
F16F9/34
Attorney, Agent or Firm:
Shuji Shiokawa