JPH0466371U

JPH0466371U -

Info

Publication number: JPH0466371U
Application number: JP10800690U
Authority: JP
Priority date: 1990-10-17
Filing date: 1990-10-17
Publication date: 1992-06-11

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は可変式
ポンプ・モータの全体断面図、第２図はロツカー
カム支持部の分解斜視図、第３図はロツカーカム
支持部の断面図、第４図、第５図はその変形例の
断面図である。１はケース、１ａは底壁、４はシリンダーブロ
ツク、６は軸、１１はシリンダー孔、１２はピス
トン、１３はシリンダー室、１５は弁板、１６は
ピストンシユー、１７はシユーリテーナ、１８は
ロツカーカム、３１は前面、３２は後面、３３，
３４は第１・第２ストツパ面、３５は円弧状突起
、３６は円弧状・凹溝、３５ａは円弧面、３６ａ
は円弧状底面。 The drawings show an embodiment of the present invention; FIG. 1 is an overall sectional view of a variable pump/motor, FIG. 2 is an exploded perspective view of a rocker cam support, FIG. 3 is a sectional view of a rocker cam support, and FIG. , FIG. 5 is a sectional view of a modification thereof. 1 is a case, 1a is a bottom wall, 4 is a cylinder block, 6 is a shaft, 11 is a cylinder hole, 12 is a piston, 13 is a cylinder chamber, 15 is a valve plate, 16 is a piston shoe, 17 is a shoe retainer, 18 is a rocker cam, 31 is the front, 32 is the rear, 33,
34 is a first and second stopper surface, 35 is an arcuate projection, 36 is an arcuate groove, 35a is an arcuate surface, 36a
is an arcuate bottom surface.

Claims

[Scope of claims for utility model registration] (1) Cylinder block 4 and shaft 6 in case 1
A piston 12 is fitted into the cylinder hole 11 of the cylinder block 4 to form a cylinder chamber 13, and the cylinder chamber 13 is successively communicated with the high pressure port and the low pressure port of the valve plate 15. In a variable pump motor in which a piston shoe 16 connected to a piston 12 is slidably pressed by a shoe retainer 17 along the front surface of a rocker cam 18, the rear surface 32 of the rocker cam 18 has a plurality of stopper surfaces with different angles and an arcuate protrusion 35. An arcuate groove 36 is formed in the bottom wall 1a of the case 1, and the bottom wall 1a is used as a stopper. Arc-shaped bottom surface 36 of groove 36
1. A rocker cam support structure for a variable pump/motor, characterized in that a is gradually inclined downward toward the outer circumferential side of a case 1. (2) The arcuate surface 35a of the arcuate protrusion 35 has a cross-sectional shape perpendicular to the arc, and the arc of the arcuate groove 36 has the bottom surface 36a a cross-sectional shape perpendicular to the arc. A rocker cam support structure for a variable pump/motor according to claim 1, wherein the rocker cam support structure has a shape.