Title:
HYDRAULIC CYLINDER
Document Type and Number:
WIPO Patent Application WO/2015/076163
Kind Code:
A1
Abstract:
A hydraulic cylinder in which the speed of the piston rod is reduced by a cushioning pressure occurring near an end of the stroke of the piston rod, wherein the hydraulic cylinder is provided with: the piston rod which has a first tapered section formed on the outer periphery thereof, the first tapered section being tilted relative to the center axis; a cylinder tube into which the piston rod is inserted; a cylindrical cushioning bearing which is provided to the outer periphery of the piston rod; a bearing receiving section which permits the cushioning bearing to enter therein; and a cushioning passage which is formed between the cushioning bearing and the bearing receiving section and which applies resistance to fluid passing through the cushioning passage. The cushioning bearing has a contact section on the inner periphery thereof, the contact section being capable of coming into contact with the first tapered section, and is positioned relative to the piston rod when in contact with the first tapered section.
Inventors:
TAKAI YASUHITO (JP)
Application Number:
PCT/JP2014/079951
Publication Date:
May 28, 2015
Filing Date:
November 12, 2014
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD (JP)
International Classes:
F15B15/22
Foreign References:
| CH677963A5 | 1991-07-15 | |||
| JPS62124302U | 1987-08-07 | |||
| JP2004225777A | 2004-08-12 | |||
| JPH11230117A | 1999-08-27 |
Other References:
See also references of EP 3076029A4
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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