Title:
HYDRAULIC ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/066526
Kind Code:
A1
Abstract:
A piston pump (100) is provided with a first biasing mechanism (30) for biasing a swash plate (8) according to supplied control pressure, a second biasing mechanism (40) for biasing the swash plate (8) against the first biasing mechanism (30), and a regulator (50) for controlling, according to the discharge pressure of the piston pump (100), a control pressure conducted to the first biasing mechanism (30). The second biasing mechanism (40) has a pressure chamber (43) to which the discharge pressure is conducted, and a control piston biased toward the swash plate (8) by the discharge pressure having been conducted to the pressure chamber (43). The regulator (50) has a biasing member for biasing the control piston toward the swash plate (8), and a control spool (52) moving according to the biasing force of the biasing member to regulate fluid pressure.
Inventors:
IWANAJI TETSUYA (JP)
Application Number:
PCT/JP2019/034985
Publication Date:
April 02, 2020
Filing Date:
September 05, 2019
Export Citation:
Assignee:
KYB CORP (JP)
International Classes:
F04B1/32; F03C1/40
Foreign References:
| JPH01114990U | 1989-08-02 | |||
| JPH0174380U | 1989-05-19 | |||
| JP2017115749A | 2017-06-29 | |||
| JP2008240518A | 2008-10-09 | |||
| JP2018183678A | 2018-11-22 |
Other References:
See also references of EP 3683440A4
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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