Title:
油圧装置
Document Type and Number:
Japanese Patent JP4247078
Kind Code:
B2
Abstract:
The present invention relates to hydraulic equipment comprising input shaft (2) and output shaft; first and second plungers (8, 10) and first and second spool valves (9, 11) which are moved reciprocally axially; a cylinder block (7) which houses the plungers and spool valves and is rotated integrally with the input shaft; an input side swash plate (6) which touches the first plungers; and an output side swash plate (12) which touches the second plungers and is rotated integrally with the output shaft. The purpose of the present invention is to reduce number of parts concerning to the accuracy of the reciprocal movement of the first and second spool valves. Spool valve guides (37 and 47) on which guide grooves (37b and 47b) slanted against axis of the rotary shaft are formed, and the first or second spool valve is engaged with a holding member (38 or 48) attached to the guide groove or the guide groove.
Inventors:
Takeshi Ouchida
Shuji Shiozaki
Hidekazu Niu
Hiroshi Matsuyama
Shuji Shiozaki
Hidekazu Niu
Hiroshi Matsuyama
Application Number:
JP2003317071A
Publication Date:
April 02, 2009
Filing Date:
September 09, 2003
Export Citation:
Assignee:
Yanmar Co., Ltd.
International Classes:
F04B1/22; F16H39/14; F04B53/10
Domestic Patent References:
| JP11082671A | ||||
| JP2003014079A |
Foreign References:
| US1780365 |
Attorney, Agent or Firm:
Juichiro Yano