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Title:
SWASH PLATE TYPE HYDRAULIC MACHINE AND HYDROSTATIC TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2011241715
Kind Code:
A
Abstract:

To facilitate assembling work in a configuration enabling high capacity without increasing a radial dimension of a cylinder block, in a swash plate type hydraulic machine.

A hydraulic pump 12 and a hydraulic motor as a swash plate type hydraulic machine includes a drive shaft 16 spline-fitted with a cylinder block 68 through a male spline 88. The drive shaft 16 includes a second male spline 90 as protrusions provided on an outer peripheral surface of a portion axially away for the male spline 88. In the middle of assembling such that the housing 34 and a port block are separated, the second male spline 90 is made circumferentially contactable with the cylinder block 68, and a relative position between the cylinder block 68 and the drive shaft 16 in the rotation direction is maintained regardless of urging force by a spring 72. Upon coupling of the housing 34 and the port block, the second male spline 90 is not contactable with the cylinder block 68.


Inventors:
ARAKI SHINGO
KANENOBU HIDEKI
Application Number:
JP2010000113079
Publication Date:
December 01, 2011
Filing Date:
May 17, 2010
Export Citation:
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Assignee:
KANZAKI KOKYUKOKI MFG CO LTD
International Classes:
F04B1/22; F03C1/253; F16H39/10
Domestic Patent References:
JPH07189890A1995-07-28
JPS5974346A1984-04-26
JPH07189890A1995-07-28
JPS5974346A1984-04-26
Attorney, Agent or Firm:
吉田 研二
石田 純