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hydraulic device

A technology of hydraulic device and casing, applied in the field of hydraulic device, to achieve the effects of low cost, reduced processing and simple assembly

Active Publication Date: 2018-06-26
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the axial movement of the swash plate support plate is restricted by inserting and fastening the mounting bolts into the through holes provided on the swash plate support plate.

Method used

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  • hydraulic device
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Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0064] figure 1 It is a schematic diagram of a cross section of a swash plate type variable displacement hydraulic pump as an example of the hydraulic device according to the first embodiment of the present invention cut along a plane parallel to the axial direction.

[0065] The swash plate type variable displacement hydraulic pump has a bottomed cylinder-shaped housing 101, a rotating shaft 102, a cylinder 103, a plurality of pistons 104, a swash plate 105, and a swash plate support 106 as an example of a reaction force receiving member.

[0066] The housing 101 has a bottom 101a and a peripheral side 101b integrally formed with the bottom 101a and connected to the peripheral edge of the bottom 101a. The insertion hole 113 through which the rotation shaft 102 is inserted is provided in this bottom part 101a. The rotating shaft 102 inserted into the insertion hole 113 is rotatably supported by the casing 101 via a bearing 109 .

[0067] In addition, a concave portion 114 in...

no. 2 Embodiment approach

[0106] Figure 8 It is a cross-sectional view of a fixed displacement hydraulic pump according to a second embodiment as an example of a hydraulic device. Figure 8 in, for with figure 1 The components of the swash plate type variable displacement hydraulic pump of the first embodiment shown are the same as or similar to those of the hydraulic pump. Figure 1-7 The constituent parts of the same reference number, with regard to their structure and function, cite Figure 1-7 The description thereof will be omitted, and only the different components will be described below.

[0107] This second embodiment differs from the first embodiment only in that it has a dual-purpose member 426 as a reaction force receiving member, and this dual-purpose member 426 is integrally formed by the swash plate 105 and the swash plate support base 106 of the first embodiment. .

[0108] This dual-purpose member 426 provides the reaction force receiving member with the function of a fixed swash ...

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PUM

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Abstract

Provided is a hydraulic device that can be produced at low cost and can be easily assembled. A first ring-shaped groove (116) is provided on the outer peripheral surface of a reaction force receiving member (106). Furthermore, a second ring-shaped groove (117) that faces the first ring-shaped groove (116) is provided on the inner peripheral surface of a recess (114) in a housing (101). A retaining ring (112) engages with the first and second ring-shaped grooves (116, 117). An engagement hole (212), which is engaged by the tip (112a) of the retaining ring (112), said tip (112a) being bent in an L shape, is provided in the reaction force receiving member (106).

Description

technical field [0001] For example, the present invention relates to hydraulic devices such as variable displacement hydraulic pumps, fixed displacement hydraulic pumps, variable displacement hydraulic motors, and fixed displacement hydraulic motors. Background technique [0002] In addition, as a hydraulic device, there is a hydraulic pump having a swash plate support seat arranged in a bottomed cylinder-shaped casing (see, for example, Japanese Patent Application Laid-Open No. 11-351134 (Patent Document 1)). [0003] The swash plate supporting base supports the swash plate so as to be capable of tilting. A piston reciprocating in the housing is axially opposed to the swash plate. [0004] In addition, the above-mentioned swash plate support seat is fitted into a recess provided on the inner surface of the bottom of the housing. Specifically, the swash plate support seat enters into the casing from an opening on a side opposite to the bottom side of the casing, and fits i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03C1/253F04B1/20
CPCF04B1/20
Inventor 渡立浩二
Owner DAIKIN IND LTD