Title:
SWASH PLATE TYPE PISTON PUMP MOTOR
Document Type and Number:
Japanese Patent JP2015071978
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a swash plate type piston pump motor that can prevent floating of a shoe during high speed rotation and suppress decline in pump efficiency during low speed rotation.SOLUTION: A swash plate type piston pump motor 100 includes: a retainer holder 50 slidably fitted to a rotating shaft 1 and having one end coming into sliding contact with a retainer 40; an energizing member 60 for energizing the retainer holder 50 on the retainer side; an annular recessed portion 15 that is formed in a cylinder block 10 to surround the outer periphery of the rotating shaft 1 and to which the other end side of the retainer holder 50 is inserted; and a movable member 80 that abuts on both of a bottom surface 15A of the annular recessed portion 15 and the other end surface 52 of the retainer holder 50 and is movable in the radial direction within the annular recessed portion 15 by using centrifugal force caused by the rotation of the cylinder block 10. Conversion portion 52, 15A for converting the force of the movable member 80 toward the radial outer side to the energizing force for energizing the retainer holder 50 on the retainer side are formed at least one of the retainer holder 50 and the annular recessed portion 15.
Inventors:
NOGUCHI EISHIN
Application Number:
JP2013208279A
Publication Date:
April 16, 2015
Filing Date:
October 03, 2013
Export Citation:
Assignee:
KAYABA INDUSTRY CO LTD
International Classes:
F04B1/22; F03C1/253
Domestic Patent References:
| JP2001511865A | 2001-08-14 | |||
| JPH07305677A | 1995-11-21 |
Foreign References:
| DE2446535A1 | 1976-04-15 |
Attorney, Agent or Firm:
Masaki Goto
Masaaki Iida
Atsushi Sudo
Kenji Murase
Masaaki Iida
Atsushi Sudo
Kenji Murase