JPH0272881U

JPH0272881U -

Info

Publication number: JPH0272881U
Application number: JP15238788U
Authority: JP
Priority date: 1988-11-22
Filing date: 1988-11-22
Publication date: 1990-06-04
Anticipated expiration: 2003-10-25
Also published as: JPH0542296Y2

Description

[Brief explanation of drawings]

第１〜４図は本考案を具体化した第１の実施例
を示すものであつて第１図は比例ソレノイドの操
作力と圧力反室との力とがバランスして弁部が閉
じた状態を示す断面図、第２図は比例ソレノイド
の操作力が大きな状態を示す断面図、第３図は比
例ソレノイドの操作力が小さな状態を示す断面図
、第４図は弁開度と偏差との関係を示す線図、第
５図は第２の実施例の断面図である。入力ポート……２、第１の室……３、出力ポー
ト……４、第２の室……５、壁……６、連通孔…
…７、弁座……１２、ばね……１４、プランジヤ
……１６、比例ソレノイド……１７、作動ロツド
……１８、圧力反室……１９、弁体……２０、受
圧部……２１、流路……２４。 Figures 1 to 4 show a first embodiment embodying the present invention, and Figure 1 shows a state in which the operating force of the proportional solenoid and the force of the pressure counter chamber are balanced and the valve part is closed. 2 is a sectional view showing a state in which the operating force of the proportional solenoid is large, Fig. 3 is a sectional view showing a state in which the operating force of the proportional solenoid is small, and Fig. 4 is a sectional view showing the relationship between the valve opening degree and the deviation. A diagram showing the relationship, FIG. 5 is a sectional view of the second embodiment. Input port...2, First chamber...3, Output port...4, Second chamber...5, Wall...6, Communication hole...
...7, Valve seat...12, Spring...14, Plunger...16, Proportional solenoid...17, Actuation rod...18, Pressure chamber...19, Valve body...20, Pressure receiving part...21, Channel...24.

Claims

[Scope of utility model registration request]

A communication hole 7 that communicates both chambers 3 and 5 is formed in a wall 6 that partitions a first chamber 3 that communicates with the input port 2 and a second chamber 5 that communicates with the output port 4. A valve seat 12 is formed at the end on the side of the first chamber 3, and an actuating rod 18 attached to the plunger 16 of the proportional solenoid 17 has its tip accommodated in the first chamber 3 and has a pressure-reacting tip. A valve body 20 inserted into the chamber 19 is fixed so as to be able to come into contact with the valve seat 12, and an actuation rod 1 is provided at a position facing the communication hole 7.
A pressure receiving part 21 that is movable integrally with the valve body 8 is provided so that the pressure in the second chamber 5 acting on the valve body 20 and the pressure receiving part 21 is balanced, and the actuating rod 18 and the valve body 20 are A flow path 24 is provided to communicate the chamber 5 and the pressure counter chamber 19, and the opening degree of the valve is controlled by opposing the operating force of the proportional solenoid 17 and the pressure of the pressure counter chamber 19. Pressure control valve.