Title:
SWASH PLATE TYPE HYDRAULIC ROTATING MACHINE
Document Type and Number:
WIPO Patent Application WO/2010/007710
Kind Code:
A1
Abstract:
A swash plate type hydraulic rotating machine which can be produced at enhanced productivity and in which sliding surfaces of tilt angle adjusting cylinders have high seizure resistant and wear resistant properties. In a swash plate type hydraulic rotating machine, pistons are circumferentially arranged in a cylinder block rotating together with a rotating shaft, the pistons reciprocate with the front ends thereof sliding on a swash plate, and the swash plate is supported by a swash plate supporting section so as to be tiltable relative to the rotating shaft. The swash plate type hydraulic rotating machine is also provided with a tilt adjusting drive section (47) for changing the tilt angle θ of the swash plate. The tilt adjusting drive section (47) has tilt adjusting large-diameter and small-diameter cylinder chambers (42, 43) and also has tilt adjusting large-diameter and small-diameter pistons slidingly moving in the cylinder chambers (42, 43) to change the tilt angle θ of the swash plate. Those surfaces of the inner peripheral surfaces (42a, 43a) of the cylinder chambers (42, 43) which slide against the tilt adjusting pistons have hardened sections (48, ...) hardened by using laser beams.
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Inventors:
MORI TAKASHI
TAMASHIMA HIDEKI
TAMASHIMA HIDEKI
Application Number:
PCT/JP2009/001127
Publication Date:
January 21, 2010
Filing Date:
March 13, 2009
Export Citation:
Assignee:
KAWASAKI PRECISION MACH KK (JP)
MORI TAKASHI
TAMASHIMA HIDEKI
MORI TAKASHI
TAMASHIMA HIDEKI
International Classes:
F04B1/22; F03C1/253
Foreign References:
| JP2007092707A | 2007-04-12 | |||
| JP2006291879A | 2006-10-26 | |||
| JPS6158950A | 1986-03-26 | |||
| JPH01306526A | 1989-12-11 | |||
| JPH1150951A | 1999-02-23 |
Other References:
See also references of EP 2309126A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
Patent business corporation Owner old patent firm (JP)
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