Title:
LINEAR HYDRAULIC ACTUATOR
Document Type and Number:
WIPO Patent Application WO/2017/200212
Kind Code:
A1
Abstract:
The present invention relates to a linear hydraulic actuator comprising: a housing having an inner space in which fluid can be accommodated; a piston formed so as to reciprocate in a longitudinal direction by receiving pressure from the fluid accommodated in the inner space; a piston rod connected to the piston by penetrating the housing; and an inner flow path provided at an outer end of the housing or the piston rod so as to receive the fluid from a hinge part connected to the outside. The linear hydraulic actuator according to the present invention can transmit hydraulic pressure to the hinge part or a joint without a hose by using an actuator structure, such that the influence of elasticity of the hose can be ignored, so as to increase control stiffness, thereby enabling precise and robust control performance to be ensured, and freedom of design to be increased by allowing the hose to be ignored during designing.
Inventors:
RYU SUNG MOO (KR)
MOON JEONG WHAN (KR)
LEE CHAE HYEUK (KR)
MOON JEONG WHAN (KR)
LEE CHAE HYEUK (KR)
Application Number:
PCT/KR2017/004051
Publication Date:
November 23, 2017
Filing Date:
April 14, 2017
Export Citation:
Assignee:
KNR SYSTEM INC (KR)
International Classes:
F15B15/08; F15B15/14
Foreign References:
| JPH07208409A | 1995-08-11 | |||
| KR20000001835A | 2000-01-15 | |||
| KR20060047470A | 2006-05-18 | |||
| JP2012141058A | 2012-07-26 | |||
| JP2001504922A | 2001-04-10 |
Other References:
See also references of EP 3460260A4
Attorney, Agent or Firm:
ENVISION PATENT& LAW FIRM (KR)
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