JPS6453682U

JPS6453682U -

Info

Publication number: JPS6453682U
Application number: JP14979087U
Authority: JP
Priority date: 1987-09-30
Filing date: 1987-09-30
Publication date: 1989-04-03

Description

[Brief explanation of the drawing]

第１図は本考案の代表的な実施例を示す電磁弁
の断面図、第２図は同電磁弁に適用される板バネ
の一例を示す平面図、第３図は同電磁弁の作動時
の状態を示す断面図、第４図は先行技術であるダ
イアフラムを採用した電磁弁の断面図である。図の主要部分の説明、１……プランジヤ、３…
…弁体、４……ダイアフラム、５……板バネ、７
……鉄心、８……ボビン、１０……入力ポート、
１１……出力ポート。 Fig. 1 is a sectional view of a solenoid valve showing a typical embodiment of the present invention, Fig. 2 is a plan view showing an example of a leaf spring applied to the solenoid valve, and Fig. 3 is a diagram showing when the solenoid valve is in operation. FIG. 4 is a sectional view of a prior art electromagnetic valve employing a diaphragm. Explanation of the main parts of the diagram, 1...plunger, 3...
... Valve body, 4 ... Diaphragm, 5 ... Leaf spring, 7
... Iron core, 8 ... Bobbin, 10 ... Input port,
11...Output port.

Claims

[Scope of utility model registration request]

a housing having an input port and an output port; a fluid passage formed in the housing and communicating between the two ports; a yoke fixed to one end of the housing together with a bobbin around which a solenoid coil is wound; an iron core fixed in a bobbin, a first pressure chamber disposed on the axis of the bobbin, having a predetermined seal diameter, communicating the inside of the fluid passage with the input port, and a first pressure chamber communicating with the output port. 2
a main valve element that partitions the pressure chamber and opens and closes communication between the two chambers; a plunger that is loosely fitted into the bobbin and connected and integrated with the main valve element at one end; an elastic body installed between the main valve element and the housing, the effective diameter of which is set substantially equal to the elastic body, and defining a back pressure chamber within the second pressure chamber; a leaf spring that cooperates with a plunger to move toward and away from the end surface of the bobbin; and a return spring that biases the plunger to hold the main valve element in a closed position when the solenoid coil is not energized; A communication hole is provided between the element and the plunger to communicate the first pressure chamber and the back pressure chamber, and when the solenoid coil is energized, the leaf spring is attached to the end surface of the bobbin before the plunger and the core come into contact. A solenoid valve, characterized in that the plunger is brought into contact with the plunger to restrict its movement.