JPH01176766U

JPH01176766U -

Info

Publication number: JPH01176766U
Application number: JP7372588U
Authority: JP
Priority date: 1988-06-02
Filing date: 1988-06-02
Publication date: 1989-12-18
Anticipated expiration: 2003-06-02
Also published as: JP2529020Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係るピストンポン
プの全体構成を正面より示す縦断面図、第２図は
これを側方より示す縦断面図、第３図は第１図の
ものの要部を拡大して示す断面図、第４図は本考
案の他の実施例を示す第３図相当図である。１……ポンプボデイ、１ａ……本体、１ｂ……
ヘツド、１ｃ，１ｄ……接合面、１ｅ……ねじ穴
、７……オイルリザーバ、３７ａ……孔（吐出孔
）、４１……リリーフバルブ、４２……ボール（
弁体）、４３……バルブ孔、４４……小径通路、
４８……弁受け部材、４９……ばね受け部材、５
０……ばね、５１……調整ねじ。 Fig. 1 is a longitudinal cross-sectional view showing the overall structure of a piston pump according to an embodiment of the present invention from the front, Fig. 2 is a longitudinal cross-sectional view showing the same from the side, and Fig. 3 is a main part of the piston pump shown in Fig. 1. FIG. 4 is an enlarged sectional view showing another embodiment of the present invention corresponding to FIG. 3. 1...Pump body, 1a...Main body, 1b...
Head, 1c, 1d...joint surface, 1e...screw hole, 7...oil reservoir, 37a...hole (discharge hole), 41...relief valve, 42...ball (
valve body), 43...valve hole, 44...small diameter passage,
48... Valve receiving member, 49... Spring receiving member, 5
0...Spring, 51...Adjustment screw.

Claims

[Scope of utility model registration request]

The pump body has a two-piece structure consisting of a main body and a head, with a small diameter passage connected to the discharge hole bored on one side of their joint surfaces, and a large diameter passage opened on the side of the small diameter passage and communicated with the oil reservoir on the other side. A valve hole is formed, and the body on the side of the valve hole is provided with a threaded hole that penetrates from the outside to the distal end of the valve hole, and a valve body is provided in the valve hole to close the small diameter passage. A spring that constantly presses the valve body toward the small-diameter passage side and a spring receiving member that receives the spring on the side opposite to the valve body are accommodated, and the spring receiving member is slidably provided in the valve hole, and the spring receiving member is slidably provided in the valve hole. An oil pump characterized in that the setting position within the oil pump is variable by a cam action of an adjusting screw that is screwed into the screw hole and engaged with the end of the spring receiving member.