Title:
ROTARY SWASH PLATE HYDRAULIC PUMP
Document Type and Number:
WIPO Patent Application WO/2023/188817
Kind Code:
A1
Abstract:
This rotary swash plate hydraulic pump comprises a casing, a cylinder block disposed in the casing so as not being capable of rotating relative thereto and having a plurality of cylinder bores opened at one end face, a rotary swash plate rotatably housed in the casing so as to face one end face of the cylinder block, a plurality of pistons each inserted into a respective cylinder bore and reciprocating in the cylinder bore by rotation of the swash plate, and a variable displacement mechanism that changes an effective stroke length of at least one of the plurality of pistons, wherein the variable displacement mechanism includes a shaft portion inserted through the cylinder block and interlocking with the rotating swash plate, and a swash plate portion provided on the shaft portion so as to be capable of moving forward and backward in the axial direction but incapable of relative rotation, and the shafts portion is journalled at axially spaced positions in the cylinder block.
Inventors:
NISHIDA SHINJI
YOSHIMURA ISAMU
NAKAI DAISUKE
TAKAO SATORU
YOSHIMURA ISAMU
NAKAI DAISUKE
TAKAO SATORU
Application Number:
PCT/JP2023/003560
Publication Date:
October 05, 2023
Filing Date:
February 03, 2023
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F04B1/141; F04B53/00
Foreign References:
| JPH0343687A | 1991-02-25 | |||
| US20060021499A1 | 2006-02-02 | |||
| JP2018155199A | 2018-10-04 | |||
| JPH07167111A | 1995-07-04 |
Attorney, Agent or Firm:
ISHIDA, Shoji (JP)
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