Title:
HYDRAULIC CYLINDER
Document Type and Number:
WIPO Patent Application WO/2017/061645
Kind Code:
A1
Abstract:
Disclosed is a hydraulic cylinder for preventing the release of a piston coupled to a cylinder rod, which is retractably moved by the supply and discharge of hydraulic oil. The present invention provides a hydraulic cylinder comprising: a cylinder tube having a cylinder rod coupled thereto so as to be retractably driven by the supply and discharge of hydraulic oil; a piston coupled to one end of the cylinder rod so as to divide the inside of the cylinder tube into a large chamber and a small chamber; and a key coupled to a coupling hole, which is penetratingly formed in the piston in the radial direction of the piston, and to a key groove, which is formed on the outer circumferential surface of the cylinder rod so as to coincide with the center of the coupling hole when the piston is coupled to the one end of the cylinder rod, and preventing the release of the piston from the cylinder rod.
Inventors:
KIM HO-BIN (KR)
KO BYEONG-MO (KR)
KO BYEONG-MO (KR)
Application Number:
PCT/KR2015/010598
Publication Date:
April 13, 2017
Filing Date:
October 07, 2015
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
KIM HO-BIN (KR)
KIM HO-BIN (KR)
International Classes:
F15B15/08; F15B15/14; F15B15/20
Foreign References:
| KR20140086438A | 2014-07-08 | |||
| KR20050103793A | 2005-11-01 | |||
| KR20140062377A | 2014-05-23 | |||
| KR20050003776A | 2005-01-12 | |||
| KR20110068646A | 2011-06-22 |
Attorney, Agent or Firm:
YOON, Eui-Seoup (KR)
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