JPH0332179U

JPH0332179U -

Info

Publication number: JPH0332179U
Application number: JP9293989U
Authority: JP
Priority date: 1989-08-09
Filing date: 1989-08-09
Publication date: 1991-03-28

Description

[Brief explanation of drawings]

図面は本考案の第１実施例を示したもので、第
１図は圧力空気を供給しない状態の全体の断面図
、第２図は吐出行程を示した断面図、第３図はピ
ストンが吐出行程の終端で第１空気室と第２空気
室を連通させた状態の断面図、第４図は第１空気
室内の圧力が減圧してピストンが後退している状
態の一部破断した断面図、第５図は切換弁が第１
図から第３図に切り換わる途中の状態の断面図、
第６図は第２実施例を示すもので高圧油用ポンプ
の断面図である。１…本体、２…シリンダ、４…ピストン、６…
スプリング、７…連通孔、８，９…連結口、１３
，１８…弁、３１…蓋体、３２…切換弁室、３８
…切換弁、Ａ，Ｃ…空気室、Ｂ，Ｄ…油室。 The drawings show the first embodiment of the present invention, in which Fig. 1 is an overall cross-sectional view in a state where no pressurized air is supplied, Fig. 2 is a cross-sectional view showing the discharge stroke, and Fig. 3 is a cross-sectional view when the piston is discharging. A cross-sectional view of the state in which the first air chamber and the second air chamber are in communication at the end of the stroke, and FIG. 4 is a partially broken cross-sectional view of the state in which the pressure in the first air chamber is reduced and the piston is retracted. , Figure 5 shows that the switching valve is the first
A sectional view of the state in the middle of switching from Fig. 3 to Fig. 3,
FIG. 6 shows a second embodiment, and is a sectional view of a high-pressure oil pump. 1...Body, 2...Cylinder, 4...Piston, 6...
Spring, 7...Communication hole, 8, 9...Connection port, 13
, 18...Valve, 31...Lid body, 32...Switching valve chamber, 38
...Switching valve, A, C...Air chamber, B, D...Oil chamber.

Claims

[Scope of utility model registration request]

An air chamber is provided on the rear side of the piston housed in the cylinder so that it can move forward and backward, and an oil chamber is provided on the front side, and a spring for returning the piston is installed in the cylinder on the oil chamber side.
A main body equipped with threads for preventing backflow in each connection port provided for oil absorption and oil discharge in the communication hole connected to the oil chamber,
and a lid body having a switching valve chamber that accommodates a switching valve that controls the supply and exhaust of compressed air to the air chamber, and at the end of the compression or oil discharging stroke of the piston, the air pressure in the air chamber is During the stroke, the booster pump utilizes the force of the spring to operate the switching valve to switch between supplying and exhausting compressed air so that oil can be discharged intermittently and continuously.