JPH08884U - valve - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a valve that maintains a normal operating state without the hole 24 of the diaphragm 20 biting into the valve body strut portion 12 under all conditions of use such as negative pressure. [Structure] A valve body 10 comprising a valve body support portion 12, a diaphragm insertion portion 14, and a stopper portion 13, in which a diaphragm 20 and a pressure receiving plate 30 are inserted into the diaphragm insertion portion 14, and the diaphragm portion 20 serves to In the fixed valve, the diaphragm fixing member 22 is embedded in the diaphragm 20 that is in contact with the diaphragm insertion portion 14. The diaphragm fixing material may be a washer made of a hard material such as metal.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve structure using a valve body and a diaphragm, and fixing the diaphragm to the valve body.

[0002]

[Prior art]

 As is well known, a valve used in a conventional valve, for example, a solenoid valve and arranged between one space and the other space has a structure shown in FIG. In FIG. 3, a columnar valve body strut 12 is vertically provided on the center axis of the circumference of a substantially circular valve body 10 that directly divides the space between the two. There is a small-diameter diaphragm insertion part 14, and a stopper part 13 is formed on the upper surface of the valve body strut part 12 at the boundary between the valve body strut part 12 and the diaphragm insertion part 14, and near the tip of the diaphragm insertion part 14. Has a pin insertion hole 16 into which a pin 50 described later is inserted.

A substantially circular diaphragm 20 made of an elastic material such as rubber having a hole 24 on the center axis of the circumference is inserted into the diaphragm insertion portion 14, and a hole is formed on the center axis of the circumference from the upper surface. A pressure receiving tray 30 having 34 is inserted, a spring 40 is inserted above this, and a pin 50 is inserted in a pin insertion hole 16 near the tip of the diaphragm insertion portion 14. As described above, the diaphragm 20 and the pressure receiving plate 30 are fixed to the stopper portion 13 formed at the boundary between the diaphragm inserting portion 14 and the valve body strut portion 12 after the diaphragm inserting portion 14 is inserted from above the pressure receiving tray 30. A force is applied in the direction of the stopper portion 13 by the spring 40 inserted into the pin, and the pin 50 is fixed by inserting it into the pin insertion hole 16.

The pressure receiving plate 30 is made of, for example, metal, and its lower surface presses the joint between the diaphragm 20 and the stopper portion 13 using a spring 40.

[0005]

[Problems to be solved by the device]

 In the valve having the above structure, the structure of the pressure receiving plate 30 is as shown in FIG. FIG. 4 is a view of the pressure receiving plate 30 of FIG. 3 viewed from the arrow direction (downward).

As described above, the pressure receiving tray 30 holds down the joint between the diaphragm 20 and the stopper portion 13, but as shown in FIG. 4, the lower surface of the pressure receiving tray 30 is a flat metal plate which is not processed. Since it is made of a material, etc., the diaphragm 20 deforms and the hole 24 expands when the valve is used, especially under conditions where negative pressure is applied to the valve. , The hole 24 bites into the valve body strut 12, and even after returning to the normal use condition, the diaphragm 20 remains in the state in which the hole 24 is biting into the valve strut 12, and the function as the valve body is It will be damaged.

The present invention has been made in view of the above problems, and under all conditions of use such as negative pressure, the hole 24 of the diaphragm 20 does not bite into the valve strut portion 12 and operates normally. The purpose is to provide a valve that maintains the condition.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a valve body 10 having a valve body strut portion 12, a diaphragm insertion portion 14, and a stopper portion 13, in which the diaphragm 20 and the pressure receiving plate 30 are inserted. In the valve in which the diaphragm 20 is fixed by the stopper portion 13, the diaphragm fixing member 22 is embedded in the diaphragm 20 that contacts the diaphragm insertion portion 14. The diaphragm fixing material may be a washer made of a hard material such as metal.

[0009]

[Action]

 With the above configuration, even if the diaphragm 20 is deformed during use under negative pressure, the diaphragm fixing member 22 provided around the hole 24 can prevent the deformation of the hole 24, and the diaphragm between the pressure receiving plate 30 and the stopper portion 13 can be prevented. Since 20 is fixed, the hole 24 can be prevented from being deformed, and stable valve operation can always be obtained, as compared with the fixing means of the diaphragm 20 which is performed only by the conventional flat plate-shaped pressure receiving plate 30.

[0010]

【Example】

 A valve used for a solenoid valve or the like and arranged between one space and the other space has a structure shown in FIG. In FIG. 3, a columnar valve body strut portion 12 is vertically provided on the center axis of the circumference of a substantially circular valve body 10 that directly divides the space between the both, and the tip end portion of the valve body strut portion 12 is There is a small-diameter diaphragm insertion part 14, and a stopper part 13 is formed on the upper surface of the valve body support part 12 at the boundary between the valve support part 12 and the diaphragm insertion part 14, and near the tip of the diaphragm insertion part 14. Has a pin insertion hole 16 into which a pin 50 described later is inserted.

A substantially circular diaphragm 20 made of an elastic material such as rubber having a hole 24 on the center axis of the circumference is inserted into the diaphragm insertion portion 14, and a hole is formed on the center axis of the circumference from the upper surface. A pressure receiving tray 30 having 34 is inserted, a spring 40 is inserted above this, and a pin 50 is inserted in a pin insertion hole 16 near the tip of the diaphragm insertion portion 14. As described above, the diaphragm 20 and the pressure receiving plate 30 are fixed to the stopper portion 13 formed at the boundary between the diaphragm inserting portion 14 and the valve body strut portion 12 after the diaphragm inserting portion 14 is inserted from above the pressure receiving tray 30. A force is applied in the direction of the stopper portion 13 by the spring 40 inserted into the pin, and the pin 50 is fixed by inserting it into the pin insertion hole 16.

FIG. 1 is a side sectional view of a diaphragm 20 according to an embodiment of the present invention. In FIG. 1, the diaphragm 20 is formed by molding an elastic material such as rubber into a substantially disc shape as described above, and a diaphragm fixing material 22 is embedded in the outer periphery of the hole 24 inside the diaphragm 20 in the thickness direction. The diaphragm fixing member 22 may be a washer made of a hard material such as metal or ceramic, or may be a soft material such as cloth. Things can be used.

Further, the diaphragm fixing member 22 may be arranged at a place other than the inside of the diaphragm 20 shown in FIG. 1, for example, on the upper surface of the diaphragm 20 as shown in FIG. 2 or on the lower surface (not shown). Needless to say, similar effects and advantages can be obtained as long as they are embedded in the diaphragm 20 that contacts the diaphragm insertion portion 14.

[0014]

[Effect of device]

 If the diaphragm fixing member 22 is provided as in the above configuration, the diaphragm 20 can be securely fixed to the stopper portion 13, and even in any use such as negative pressure reduction, the hole 24 of the diaphragm 20 bulges to the valve strut portion 12 It is possible to prevent bite of the valve and always obtain stable valve operation.

[Submission date] February 18, 1994

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

The diaphragm fixing member 22 is arranged as shown in FIG.
Diaphragm 20 that abuts diaphragm insertion portion 14 at a location other than inside 20, such as the upper surface of diaphragm 20 as shown in FIG. 2 or the lower surface (not shown).
Needless to say, the same function and effect can be obtained if it is embedded in.

[Brief description of drawings]

FIG. 1 is a bottom view of a pressure receiving plate according to an embodiment of the present invention.

FIG. 3 is a view showing a joint structure of a valve body and a diaphragm.

FIG. 4 is a bottom view of a conventional pressure receiving tray.

[Explanation of symbols]

 In the drawings, the same reference numerals indicate the same or corresponding parts. 10 valve body 12 valve body strut portion 13 stopper portion 14 diaphragm insertion portion 16 pin insertion hole 20 diaphragm 22 diaphragm fixing material 24, 34 hole 30 pressure receiving plate 40 spring 50 pin

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[Procedure amendment]

[Submission date] February 18, 1994

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a side sectional view of a diaphragm according to an embodiment of the present invention.

FIG. 2 is a side sectional view of a diaphragm according to an embodiment of the present invention in which a diaphragm fixing material is arranged on the upper surface of the diaphragm.

FIG. 3 is a view showing a joint structure of a valve body and a diaphragm.

FIG. 4 is a bottom view of a conventional pressure receiving tray.

[Explanation of reference numerals] In the drawings, the same reference numerals indicate the same or corresponding portions. 10 valve body 12 valve body strut portion 13 stopper portion 14 diaphragm insertion portion 16 pin insertion hole 20 diaphragm 22 diaphragm fixing material 24, 34 hole 30 pressure receiving plate 40 spring 50 pin

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 3]

[Figure 4]

Claims (2)

[Scope of utility model registration request] 1. A valve body comprising a valve body strut portion, a diaphragm insertion portion, and a stopper portion, wherein the diaphragm and the pressure receiving plate are inserted into the diaphragm insertion portion, and the diaphragm is fixed by the stopper portion. A valve with a diaphragm fixing material embedded in the diaphragm that abuts the diaphragm insertion part. 2. The valve according to claim 1, wherein the diaphragm fixing member uses a washer made of a hard material such as metal.