Title:
SWASH PLATE TYPE PISTON PUMP MOTOR
Document Type and Number:
WIPO Patent Application WO/2008/072338
Kind Code:
A1
Abstract:
[PROBLEMS] To enhance the wear resistance and seizure resistance of the sliding
surfaces of a swash plate and a swash plate support base while improving productivity.
[MEANS FOR SOLVING THE PROBLEMS] In the swash plate type piston pump motor (1),
pistons (10) are circumferentially disposed in a cylinder block (9) rotating
together with a rotary shaft (5). The tip end (10a) of each piston (10) is guided
by the sliding surface (26a) of the swash plate (12) whereby the piston (10) is
reciprocatingly moved. The projected surface (32) of the swash plate (12) is
slidably supported on the recessed surface (22) of the swash plate support base
(4) whereby the swash plate can be tilted relative to the rotating axis (L). The
recessed surfaces (21, 22) of the swash plate support base (4) have hardened parts
(21a, 22a) partially hardened by laser beam.
Inventors:
MORI TAKASHI
OHMI YASUO
OKADO HIDEKI
OHMI YASUO
OKADO HIDEKI
Application Number:
PCT/JP2006/325049
Publication Date:
June 19, 2008
Filing Date:
December 15, 2006
Export Citation:
Assignee:
KAWASAKI PRECISION MACH KK (JP)
MORI TAKASHI
OHMI YASUO
OKADO HIDEKI
MORI TAKASHI
OHMI YASUO
OKADO HIDEKI
International Classes:
F04B53/00; F03C1/253; F04B1/22
Foreign References:
| JPH08334081A | 1996-12-17 | |||
| JPS62133016A | 1987-06-16 | |||
| JP2006291879A | 2006-10-26 | |||
| JPH1150951A | 1999-02-23 |
Other References:
See also references of EP 2093425A4
Attorney, Agent or Firm:
Patent Corporate Body ARCO PATENT OFFICE (Bo-eki Bldg.123-1, Higashimachi, Chuo-k, Kobe-shi Hyogo 31, JP)
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