JPH0466377U

JPH0466377U -

Info

Publication number: JPH0466377U
Application number: JP10801390U
Authority: JP
Priority date: 1990-10-17
Filing date: 1990-10-17
Publication date: 1992-06-11

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す斜板式ポンプ・
モータの断面図、第２図、第３図はシユーリテー
ナの正面図、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、３２は環状突片、３５はリテーナ
ガイド。 Figure 1 shows a swash plate type pump showing an embodiment of the present invention.
A sectional view of the motor, FIGS. 2 and 3 are a front view and a sectional view of the shuttle retainer. 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, 32 is an annular protrusion, and 35 is a retainer guide.

Claims

[Claims for Utility Model Registration] A cylinder block 4 is rotatably supported together with a shaft 6 in a case 1, and a piston 12 is fitted into a cylinder hole 11 of the cylinder block 4 to form a cylinder chamber 13. In the swash plate type pump/motor, the chamber 13 is sequentially communicated with the high pressure port and the low pressure port of the valve plate 15, and the piston shoe 16 connected to the piston 12 is slidably pressed by the shoe retainer 17 along the front surface of the rocker cam 18. Retainer guide 3 to cylinder block 4
5 is integrally provided, an annular protrusion 32 is integrally provided in the center of the retainer 17, and a spherical inner circumferential surface 32a of the annular protrusion 32 is brought into close contact with a spherical guide surface 35a of the retainer guide 35. A preload structure for a swash plate type pump/motor, characterized in that the outer circumferential portion of the shoe retainer 17 is elastically biased toward the rocker cam side, thereby pressing and holding the piston shoe 16 against the front surface of the rocker cam 18.