JPS5914552Y2 - Water supply control device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water supply control device that electrically supplies water to a toilet bowl, urinal, washbasin, washbasin, etc. by manual operation.

Conventionally, there is a control device of this type as disclosed in Japanese Utility Model Publication No. 39-10460.

In this conventional product, a gasket is provided on the joint surface between the outer box and the lid of the outer box to seal the inside, and a push button is slidably attached to the lid.

However, even though the inside is sealed, the push button is able to slide against the lid, so moisture can flow in through the extremely small gap for sliding, which can reduce the durability of the contact mechanism of the relay placed inside. The product has defects that can lead to deterioration and failure of the product, and even pose a risk of failure.

The present invention was developed in view of the above-mentioned conventional circumstances, and its purpose is to prevent moisture and water from entering the electrical components inside the microswitch, making it safe and preventing moisture and water from entering. Another object of the present invention is to provide a water supply control device that also has a good fixation of the elastic membrane.

The basic structure for achieving this purpose is to cover the guide tube of the microswitch placed inside and the operating shaft that slides against the guide tube with an elastic membrane. In order to fix the elastic membrane, a spring is interposed between a cap nut that is screwed into a fixing nut and a push button bush.

Embodiments of the present invention will be described below with reference to the drawings.

The drawing shows an exposed type water supply control device A.

6 is a switch body, and this switch body 6 is a case 14
A microswitch (not shown) is built in, and an operating shaft portion 15 is provided at the tip to turn the microswitch ON and OFF.
is provided so as to be slidable in the front and back direction within the guide cylinder portion 30, and the switch body 6 is attached to the box body E at a desired distance from the wall surface 1.
The mounting is fixed as described below.

The box E has an opening 3 on the front and a cover 4 that is open on the rear of the opening.
and a mounting plate 2 that covers the back of the cover 4.

The mounting plate 2 has left and right side plates 10 and a top plate 10' formed by raising the peripheral edges of a flat board 9, and has screw holes 11 in the left and right side plates 10 for fixing to the cover 4. The board 9 is directly fixed to the wall surface 1 with screws 7.

The cover 4 has an open end 8 in contact with the wall surface 1 so as to cover the mounting plate 2, and further contacts the upper inner surface of the open end 8 with the upper plate 1 of the mounting plate 2.
0' An elastic body such as foamed synthetic resin or rubber is placed in the space between the outer surface and the outer surface.
2 is sandwiched to prevent water transmitted from the wall surface 1 from entering into the box body E, thereby preventing failure of the switch body 6 built in the box body E.

The cover 4 is fixedly attached to the screw holes 11 provided in the left and right side plates 10 of the mounting plate 2 with screws 13 or the like.

The push button portion 5 is provided in front of the operating shaft portion 15 of the switch body 6 so as to partially protrude from the opening 3 of the cover 4.
is the push button bush 21. It is composed of a ring 22, a spring 23, a tightening nut 24, etc.

The push button bushing 21 is formed into a cap shape with its rear open, and has a stepped portion 25 in the middle of its outer periphery, and has a large diameter portion 21a at the rear and a small diameter portion 21b at the front. An operation wall 21C is provided at the front end of 21b, and slides inside a ring 22 molded from a self-lubricating synthetic resin such as polyacetal or Teflon, which is attached to the inner peripheral surface of the push button guide 17, which will be described later.

The push button guide 17 is formed into a cylindrical shape and is fixed to the opening 3 of the box E, has a flange 17a protruding from the front inner periphery, and has a cylindrical portion 17b inside. The ring 22 is disposed around the cylindrical portion 17b, and a stepped portion 2 for the ring 22 that is secured to the flange portion 17a is provided.
5 prevents the push button bushing 21 from falling upwardly.

16 is a plate, and this plate 16 has a screw hole 16a that is screwed into the screw 33 of the guide tube portion 30 of the switch body 6.
A screw portion 18 is formed on the front surface of the plate 16 to be screwed into the push button guide 17 which is fixed to the edge of the opening 3 of the cover 4 via a packing 27 and a tightening nut 24.

Furthermore, an elastic membrane 29 is provided at the front of the plate 16 to cover the operating shaft portion 15 and the guide cylinder portion 30 that slidably guides the operating shaft portion 15.

The elastic membrane 29 is made of rubber such as EPI3M, NBR, SBR, etc., and has a flange portion 32 protruding from the bottomed bag portion 29a and the open end, and the flange portion 32 is connected to the guide cylinder portion 30 of the switch body 6. one fixing nut screwed onto the screw 33 and a bag nut screwed onto the fixing nut 19)
The front surface of the fixing nut 19 of the fixture a consisting of 20;
The flange 20a of the cap nut 20 is fixed to the switch body 6 so as to be sandwiched therebetween, and the operating shaft 15 is covered with the operating shaft 15 and the guide tube 30 that guides the operating shaft 15.
Also, it prevents water and moisture from entering the guide tube portion 30.

23 is a spring, and this spring 23 is attached to the push button bush 2.
1 operation wall portion 21 C back side and the flange portion 20 of the cap nut 20
The push button bushing 21 is interposed between the front surface of
is being suppressed outwardly.

By pressing the push button bushing 21, one end of which protrudes from the opening 3, against the repulsion of the spring 23, the operating shaft portion 15 covered with the elastic membrane 29 moves forward, and is pressed against the switch body 6. The provided microswitch is turned on and an ON signal is transmitted from the terminal 31 provided on the rear surface of the switch body 6.

When the push button 21 is pushed further, its open end eventually comes into contact with the front surface of the plate 16, preventing further advancement and preventing the switch body 6 from breaking down.

Also, when you release your finger from this state, this push button bush 21
is restored by the elastic force of the spring 23, and its stepped portion 25 is hooked to the flange portion 26 of the ring 22 attached to the inner peripheral surface of the push button guide 17, returning to the initial state, and the opening 3 It doesn't stick out anymore and you don't have to worry about it coming off.

In addition, 28 is a cord insertion part, and the electric cord 34 which connects the electric control part B which opens and closes the water supply device C and the terminal 31 is inserted.

In the illustrated example, it is provided on the bottom surface of the cover, but it may be provided on the top surface, the side surface, or the base plate 9 of the mounting plate 2 as desired.

For example, when the water supply control device A of the present invention is used in the toilet cleaning device shown in FIG. is turned on, and based on the ON signal, the electric control section B operates to open and close the water supply device C1, such as a flush valve (not shown), thereby supplying water to the toilet bowl.

In addition, the water supply control device of the present invention can of course also be used in water supply devices for urinal cleaning devices, wash basins, hand wash basins, etc.

In the present invention, the guide tube of the microswitch arranged inside and the operating shaft that slides against the guide tube are sealed with an elastic membrane, and the pushbutton bushing is pressed. The operating shaft is operated through the elastic membrane by the motion, so there is no chance of water or dust accidentally flowing into the operating shaft or guide cylinder of the switch body, and the electrical components inside the switch body are protected. Water can be reliably supplied without the risk of rust or corrosion causing malfunction, and since the pushbutton bushing is guided by the pushbutton guide and slides only in the axial direction, no part of the operation wall of the pushbutton bushing Even when pressed, the push button bush moves in the axial direction, so no excessive force is applied to the operating shaft, and the switch body is not damaged.

Moreover, since the elastic membrane is covered with the push button bushing and is not exposed to the outside, the elastic membrane will not be damaged by mischief or the like.

In addition, this elastic membrane acts as a buffer between the pushbutton bushing and the operating shaft of the switch body, so the impact of the pushbutton bushing is not directly transmitted to the operating shaft, which can reduce the impact and prevent breakdowns. It can be used as a water supply control device.

Furthermore, since a spring is interposed between the push button bush and the cap nut that is screwed into the fixing nut in order to fix the elastic membrane, the elastic force of the spring prevents the fixing nut and the cap nut from loosening. There is no risk that the guide tube or operating shaft will come into contact with water or dust.

Therefore, the intended purpose can be achieved.

[Brief explanation of drawings]

Fig. 1 is a plan view of the water supply control device of the present invention, partially cut away; Fig. 2 is a side view of Fig. 1, showing the state in which the push button is pressed, with a portion cut away; Fig. 3 is the water supply control device of the present invention. FIG. 2 is a schematic explanatory diagram of the device. In the figure: 5: Push button part, 6: Switch body, 15: Operation shaft part, 29: Elastic membrane, 30: Guide tube part, 32: Flange part, 33: Screw, a: Fixture, C: Water supply device, E : box body,
3: Opening portion, 17a: Flange portion, 17b: Cylindrical portion, 17: Push button guide, 25: Step portion, 21a: Large diameter portion, 21b: Small diameter portion, 21: Push button bush, 16a: Screw hole, 16
: Plate, 29a: Bag part, 23: Spring, 19: Fixing nut, 20a: Flange part of bag nut, 21C: Operation wall part, 2
0: Bag nut.

Claims (1)

[Scope of utility model registration request] A box whose rear end is attached to a wall and has an opening at the front, which is formed into a cylindrical shape and is fixed to the opening of the box, has a flange protruding from the inner periphery of the front, and has a cylindrical part inside. The push button guide is formed in the shape of a cap that opens at the rear, and is disposed within the cylindrical portion, and has a stepped portion in the middle of the outer periphery that engages with the flange, and a large portion behind the stepped portion that slides into contact with the cylindrical portion. A push button bushing having a diameter portion, a small diameter portion that extends forward from the front end of the push button guide through the flange portion, and an operation wall portion that closes the front end of the small diameter portion, at the rear end of the push button guide. a plate that is screwed and has a screw hole in the center;
A microswitch that controls the operation of the water supply device, a case containing the microswitch, and a guide tube integrally protruding from the case, and a case that is slidably disposed within the guide tube, with one end linked to the switch and the other end. a switch body having an operation shaft protruding from the guide tube, and a switch section disposed behind the plate by screwing the guide tube into a screw hole of the plate; an elastic membrane having a flange at the open end of the bag; a fixture for attaching the elastic membrane to the switch body with the bag covering the operation shaft and the guide tube; The fixture is equipped with a biasing spring, and includes a fixing nut that is screwed onto the guide tube of the switch body, and a flange that is screwed onto the outer periphery of the fixing nut and is formed on the front inner periphery. a cap nut, the bag portion of the elastic membrane is projected forward from the opening edge of the flange portion of the cap nut, the flange portion is sandwiched between the front surface of the fixing nut and the back surface of the flange portion of the cap nut, and the spring is A water supply control device interposed between the back of the operation wall of a push button bush and the front of the flange of a cap nut.