JPH0254384U

JPH0254384U -

Info

Publication number: JPH0254384U
Application number: JP13332188U
Authority: JP
Priority date: 1988-10-14
Filing date: 1988-10-14
Publication date: 1990-04-19

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す縦断側面図、
第２図は第１図―線に沿う断面図、第３図は
第１図―線に沿う断面図、第４図は吐出量制
御バルブ機構の拡大図、第５図はチエツクバルブ
機構の断面図、第６図ａ，ｂは切換えバルブ機構
の動きを示す拡大図、第７図は第２図―線に
沿う断面図である。Ａ……プランジヤブロツク、ａ……インロー部
、Ｂ……第１ハウジング、Ｃ……第２ハウジング
、Ｅ……可変アキシヤル形ポンプ機構、Ｆ……円
周方向でポンプ作用を発揮するポンプ機構、１…
…シヤフト、３……パワーピストン、５……ワブ
ルプレート、７……吐出量制御バルブ機構、９…
…切換えバルブ機構、１０……操作バルブ機構、
１９……スプリング。 FIG. 1 is a vertical side view showing an embodiment of the present invention;
Figure 2 is a sectional view along the line in Figure 1, Figure 3 is a sectional view along the line in Figure 1, Figure 4 is an enlarged view of the discharge amount control valve mechanism, and Figure 5 is a cross section of the check valve mechanism. 6A and 6B are enlarged views showing the movement of the switching valve mechanism, and FIG. 7 is a sectional view taken along the line of FIG. 2. A... Plunger block, a... Pilot section, B... First housing, C... Second housing, E... Variable axial type pump mechanism, F... Pump mechanism that exerts pumping action in the circumferential direction. 1...
...Shaft, 3... Power piston, 5... Wobble plate, 7... Discharge rate control valve mechanism, 9...
...Switching valve mechanism, 10...Operation valve mechanism,
19...Spring.

Claims

[Scope of utility model registration request]

A pilot part is provided protruding from a plunger block having a plurality of plunger parts arranged on the circumference, a cylindrical first housing is attached to one side of the plunger block, and a shaft is inserted through the first housing and the pilot part. While the plunger block is rotatably supported, there is a second plate on the other side of the plunger block that fits into the spigot part.
A housing is provided, a pump mechanism configured to perform a pumping action in a circumferential direction is provided on a shaft between the second housing and the cover, and a swash plate is provided on the shaft in the first housing so as to displace the swash plate in the axial direction of the shaft. A variable axial type pump mechanism with a working power piston is incorporated, and the plunger block is attached to the swash plate in cooperation with a discharge control valve mechanism and a switching valve mechanism slidable on the shaft. A tandem pump that is equipped with an operating valve mechanism to switch the force in stages.