JPH0893948A - Solenoid valve device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a low-cost solenoid valve device. [Structure] A solenoid coil 13, a fluid passage provided inside the solenoid coil 13, and having a groove portion 1 on the outer circumference.
5, a magnetic fixed member 16 and a magnetic movable member 2 facing the valve seat 17 of the fixed member 16 and slidably disposed inside the solenoid coil 13 via a sleeve 18.
0, a holder portion 21 formed outside the solenoid coil 13, and a flange portion 22 fitted in the groove portion 15 of the fixing member 16.
And a case 23 made of a magnetic material, which is integrally provided with the electromagnetic valve device 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a normally open solenoid valve device for controlling the flow of fluid by energizing a coil.

[0002]

2. Description of the Related Art As a conventional solenoid valve device, Japanese Patent Application No. 62-
FIG. 4 shows a sectional view of the solenoid valve device disclosed in Japanese Patent No. 67422. This is a non-magnetic sleeve 30 that forms a fluid passage, a bobbin 31 made of resin, and a valve seat 32 that is disposed in the fluid passage and provided in the fluid passage. A magnetic movable member 34 holding a magnetic valve element 33, and the movable member 34 abutting on the valve seat 32,
A fixing member 36 which is arranged around the sleeve 30 and the bobbin 31 so as to be separated from each other, forms a magnetic circuit, and forms a flange portion 35 that restricts movement in the axial direction, a cylindrical case 37, and a yoke 38, It is composed of an electromagnetic coil 39 arranged on the bobbin 31 so as to generate a magnetic force in the magnetic circuit. The input port 40 is provided on the fixing member 36.
Is provided, and an output port 42 is provided in the stopper plate 41 that regulates the moving range of the movable member 34.

FIG. 4 shows a state in which no current flows through the electromagnetic coil 39. When a current flows through the electromagnetic coil 39, the movable member 34 is attracted toward the fixed member 36 and moves to the left in the drawing. To sit on the valve seat 32. This cuts off the fluid flow. Next, when the electromagnetic coil 39 is de-energized and stopped, the pressure of the fluid applied to the fluid passage causes the valve element 33 to separate from the valve seat 32, and the movable member 34 moves to the right in the drawing to be provided on the movable member 34. The fluid passage communicates with each other via the communication groove 43.

[0004]

In the conventional solenoid valve device shown in FIG. 4, the fixing member 36 has a diameter substantially the same as the inner circumference of the case 37 so as not to move the fixing member 36 relative to the case 37. Forming the flange portion 35, the flange portion 3
By caulking 5 at the end of case 37, case 3
The relative movement of the fixing member 36 in the axial direction with respect to 7 is restricted. The fixing member 36 forms the input port 40 and the flange portion 35 by cutting a cylindrical metal member. However, this method has a problem that since the flange portion 35 is provided, the portion to be machined by cutting is increased, the yield at the time of machining the fixing member 36 is poor, and the cost is increased.

As another method, the fixing member 3
A method has been considered in which the yield of the fixing member 36 is improved by forming the 6 and the flange portion 35 as separate members instead of being integrated, and caulking at the end portion of the case 37 in the same manner as described above. However, since the fixing member 36 and the flange portion 35 are different members, there is a problem that the cost is not so different from the conventional one.

Therefore, it is a technical object of the present invention to improve the yield of the fixing member and to provide a lower cost solenoid valve device.

[0007]

In order to solve the above-mentioned problems, a solenoid valve device according to a first aspect of the present invention is provided with a solenoid coil and a solenoid coil. The solenoid valve device has a fluid passage inside and a groove portion on the outer periphery. A magnetic body integrally provided with a member, a movable member disposed inside the solenoid coil via a magnetic gap with the fixed member, a holder portion formed outside the solenoid coil, and a flange portion fitted in the groove portion of the fixed member. And a case consisting of.

According to the invention of claim 2 in addition to the invention of claim 1, the groove portion provided in the fixing member is formed along the entire circumference of the fixing member.

[0009]

According to the invention of claim 1, the fixing member, the case,
A magnetic circuit is composed of the yoke and the movable member,
When the solenoid coil is de-energized, the valve body is pushed by the fluid pressure from the fluid passage of the fixed member and the movable member moves. When the solenoid coil is energized, the movable member is attracted and moves toward the valve seat side of the fixed member, whereby the valve body is seated on the valve seat and the fluid flow is blocked.

According to the second aspect of the present invention, since the groove is formed along the entire circumference of the fixing member, there is less restriction on the mounting direction of the fixing member with respect to the case.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention. The electromagnetic valve device of this embodiment is an electromagnetic valve device integrally provided with a connector terminal. 1 is a cross-sectional view when the solenoid valve device is closed, and FIG. 2 is a cross-sectional view when the solenoid valve device is open. Further, FIG. 3 is a perspective view showing a state where the fixing member, which is the main part of the present invention, is fitted into the case. In the present embodiment, the solenoid valve device 10 includes a solenoid coil 13 wound around a resin bobbin 11, and an input port 14 that is inserted into the bobbin 11 of the solenoid coil 13 on the left side in the drawing and penetrates the inside thereof. A cylindrical fixing member 16 having a groove portion 15 engraved along the entire circumference, a valve seat 17 formed at the right end in the figure, a sleeve 18 inserted in the bobbin 11 on the right side in the figure and made of a non-magnetic material, A non-magnetic body that is slidably disposed in the solenoid coil 13 along the sleeve 18 via a magnetic gap with the fixed member 16 and contacts and separates from the valve seat 17 of the fixed member 16 to control the flow of fluid. The movable member 20 made of a cylindrical magnetic body that holds the valve body 19, the holder portion 21 that covers the solenoid coil 13 from the back side in the drawing downward, and the holder portion 2
1 is formed on the left side of the drawing in FIG. 1 and is made up of a case 23 made of a magnetic material and integrally provided with a flange 22 that fits into the groove 15 of the fixing member 16. A stopper plate 25 fixed to the right end of the holder portion 21 of the case 23, having an output port 24, and restricting the rightward movement of the movable member 20 is disposed on the right side of the movable member 20 in the figure.

Further, a yoke 26 of a magnetic material is arranged between the bobbin 11 and the stopper plate 25, and between the holder portion 21 and the sleeve 18, so that the magnetic field between the holder portion 21 of the case 23 and the movable member 20 is reduced. We are delivering.

Next, the operation of this embodiment will be described. The electromagnetic valve device 10 forms a magnetic circuit from the fixed member 16 to the case 23, from the case 23 to the yoke 26, from the yoke 26 to the movable member 20 via the sleeve 18, and from the movable member 20 to the fixed member 16 via the valve body 19. are doing. When the solenoid coil 13 is excited, the movable member 20 is attracted to the fixed member 16 by the magnetic attraction force (FIG. 1). As a result, the valve body 1
9 is seated on the valve seat 17, and the fluid flow is cut off. When the solenoid coil 13 is demagnetized, the fluid pressure applied to the input port 14 pushes the valve element 19 to the right in the figure, so that the movable member 20 moves and the fluid penetrates the fluid provided in the movable member 20. Output port 2 through hole 28
4 (Fig. 2). Here, since the valve body 19 is a non-magnetic body when the movable member 20 moves to the right,
The valve element 19 and the fixing member 16 are not affected by residual magnetism. Therefore, the fluid pressure is applied to the movable member 2 via the valve body 19.
Since it is transmitted to 0, it always becomes a horizontal force, and the movable member 2
0 can slide smoothly along the sleeve 18.

From the above, the input port 14 and the output port 24 of the solenoid valve device 10 are shut off when the solenoid coil 13 is excited, and the input port 14 and the output port 24 are connected when the solenoid coil 13 is demagnetized. It has become.

As shown in FIG. 3, a feature of the present invention is that a groove portion 15 is provided on the outer periphery of the fixing member 16 and a collar portion 22 is provided on the case 23 so as to correspond thereto.
When the fixing member 16 is attached to the case 23 at the time of manufacturing the solenoid valve device 10, by fitting the flange portion 22 of the case 23 into the groove portion 15 of the fixing member 16 in the groove portion 15 provided on the outer periphery of the fixing member 16. The point is that the relative movement of the fixing member 16 in the axial direction with respect to the case 23 can be restricted. Here, the fixing member 16 is formed by cutting a cylindrical metal member so that the groove portion 15 is provided all around.

According to this embodiment, the relative movement of the fixing member with respect to the case can be restricted by fitting the fixing member into the case, and the case can be eliminated. Further, since the groove is formed on the entire circumference of the fixing member, the fixing member can be easily positioned with respect to the case.

[0017]

According to the solenoid valve device of the present invention, the fixing member is provided with the groove portion, and the flange portion provided integrally with the case is fitted into the groove portion of the fixing member, so that the fixing member is relatively moved in the axial direction with respect to the case. It becomes possible to regulate, and the flange portion of the fixing member which has been conventionally required can be eliminated. By this, the fixing member is formed by cutting the groove portion,
As compared with the conventional case, the material of the fixing member is cut less, the yield of the fixing member is improved, the man-hour for manufacturing the solenoid valve is reduced, and the cost of the solenoid valve device can be reduced.

According to the invention of claim 2 in addition to claim 1, since the groove is formed on the entire circumference of the fixing member, there is less restriction on the direction of assembling the fixing member when assembling the solenoid valve device. As a result, the time required for positioning the fixing member in the assembling direction is shortened, which leads to a reduction in the assembling time of the solenoid valve device.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a solenoid valve device according to an embodiment of the present invention when the valve is closed.

FIG. 2 is a cross-sectional view of the solenoid valve device according to the embodiment of the present invention when the valve is open.

FIG. 3 is a perspective view showing a state in which a fixing member according to the present invention is fitted into a case.

FIG. 4 is a sectional view of a conventional solenoid valve device.

[Explanation of symbols]

 10 ... Electromagnetic valve device 11 ... Bobbin 13 ... Solenoid coil 14 ... Input port 15 ... Groove 16 ... Fixing member 17 ... Valve seat 18 ... Sleeve 19 ... Non-magnetic valve body 20 ... Movable member 21 ... Holder part 22 ... Collar part 23 ... Case 24 ... Output port 25 ... Stopper plate 26 ... Yoke 27 ... Cylindrical part 28 ... Fluid through hole

Claims (2)

[Claims] 1. A solenoid coil wound around a bobbin, a magnetic fixing member disposed in the solenoid coil, having a fluid passage therein and a groove portion on an outer periphery, and the fixing member in the solenoid coil. A magnetic movable member having a non-magnetic valve element that is disposed via a magnetic gap with a member and contacts and separates from the valve seat of the fixed member to control fluid flow, and the outside of the solenoid coil A case made of a magnetic material integrally provided with a holder portion formed on the base and a flange portion fitted in the groove portion of the fixed member; a magnetic material yoke disposed between the holder portion of the case and the movable member. And a solenoid valve device. 2. The electromagnetic valve device according to claim 1, wherein the groove portion provided in the fixing member is formed along the entire circumference of the fixing member.