JPS6231495Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a water supply control device that detects the use of toilet bowls, washbasins, etc. using a photoelectric detector and automatically controls the water supply to them.

<Prior Art> Conventionally, there is a device of this kind as disclosed in Japanese Utility Model Application Publication No. 121244/1983.

This is a photoelectric detector used in toilets, in which an opaque coating (pattern) such as letters is provided on the surface of a transparent plate (filter) installed in front of the photoelectric element, making the photoelectric element conspicuous when viewed from the front. I tried to avoid it.

However, if you look closely at this item, you will be able to see the presence of the photoelectric element, so there is a risk of mischief, such as blocking the part of the transparent plate in front of the photoelectric element with gum or the like.

In addition, with this type of device, dirt and dust accumulate on the front of the transparent plate, which tends to impede the operation of the photoelectric element, and disturbance light such as lighting in the toilet enters the photoelectric element, causing the photoelectric detector to malfunction. There is a risk that

<Problems to be solved by the invention> The problems to be solved by the invention are to make the existence of the photoelectric detector invisible, to prevent dirt and dust from accumulating on the front of the transparent plate, and to prevent photoelectric detection using ambient light. The goal is to completely prevent equipment malfunctions.

<Means for solving the problem> The technical means taken by the present invention to solve the above problem is to provide a recess with a window hole on the surface of the sloped surface that is inclined diagonally downward toward the rear surface. A cover, a photoelectric detector main body which is attached to the cover facing the window hole from the back side of the cover and connects to the water supply section to control it, and a photoelectric detector body facing the window hole from the front side of the cover. A colored transparent plate is attached to the recess and covers the window hole, and a dark opaque coating is provided on the back side of the colored transparent plate except for the front part of the photoelectric element embedded in the front end surface of the photoelectric detector body. In addition, the photoelectric detector body is fixed to the cover, and the peripheral edge of the front end face of the photoelectric detector body is brought into contact with the opaque coating.

<Function> In the present invention, the peripheral edge of the front end face of the photoelectric detector main body in which the photoelectric element is embedded is brought into contact with a dark-colored opaque coating applied to the back surface of the colored transparent plate except for the front part of the photoelectric element. By fixing it in the recess on the surface of the sloped surface section diagonally downward, the back side of the colored transparent plate eliminates light incident from the side, making the entire colored transparent plate appear dark, and the colored transparent plate The plate is tilted diagonally downward to make the photoelectric elements less noticeable.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

This embodiment shows an example in which the water supply control device of the present invention is implemented in a urinal cleaning device. In the figure, 1 is a cover made of a metal plate such as synthetic resin or pressed stainless steel, and the back side is open for comparison. It is shaped like a box with little focus, and its front side forms a ridgeline a parallel to both upper and lower edges at a slightly lower position, and the portion below the ridgeline a is sloped diagonally downward to form an inclined surface portion 1a. As a result, it is formed so as to have a protruding side surface shape.

The cover 1 has a narrow recess 3 which is parallel to the ridge line a and crosses the cover 1, leaving an appropriate width at both left and right ends on the front surface of the sloped surface part 1a, which is the part below the ridge line a. A recess is provided in the recess 3.
A window hole 4 is opened at a predetermined position inside, and small holes 2 are further bored as appropriate.

Reference numeral 5 denotes the main body of the photoelectric detector, which is a diffuse reflection type photoelectric detector in this embodiment, and a case 6 that houses electrical components made of a printed circuit board on which necessary wiring such as a through-hole circuit, a light receiving circuit, an amplification circuit, etc. are printed; Front plate 1 mounted on the front side and equipped with photoelectric elements such as through-hole elements 7 and 8, light-receiving element 9, and a pilot lamp 10.
1, and with the front surface of the front plate 11 facing close to the window hole 4 of the cover 1 and its peripheral edge in contact with an opaque coating 20 to be described later, the front plate 11 is glued or welded to the back surface of the cover 1. It is attached and fixed via a bracket 12. Therefore, the light from the transparent elements 7 and 8 is projected obliquely through the window hole 4. Note that 7', 8', and 9' are through-hole elements 7, 8, respectively.
A convex lens is provided on the front surface of the light receiving element 9, 13 is an insulating tape attached to the front surface of the front plate 11, and 14 is a cap provided on the back of the case 6. When this is removed, the sensing distance adjustment provided inside the case 6 can be performed. It is now possible to adjust the adjustment using a screwdriver, etc.

15 is a colored (for example, blue smoke) transparent plate made of glass, acrylic resin, etc., in a shape that fits into the recess 3, and has a wall thickness that is equal to or slightly thinner than the depth of the recess 3; When this is fitted into the recess 3 on the back side, a leg part 16 forming a mounting part is located at a position corresponding to the small hole 2, and a protrusion that fits into the window hole 4 is located at a position corresponding to the window hole 4. The portions 17 are each integrally molded.

The protrusion 17 is formed to have a uniform thickness that is approximately the same as the thickness of the cover 1 at the window hole 4 portion.

The transparent plate 15 is fitted into the recess 3 to form the leg 1.
6 through the small hole 2, and by attaching a fastener 18 such as a speed nut to the leg 16 from the back side of the cover 1, it is fixed in the recess 3 of the cover 1, and the protrusion of the colored transparent plate 15 is fixed. The portion 17 fits into the window hole 4 so that its top surface is almost flush with the back surface of the cover 1, and by removing the mounting tool 18 such as a speed nut, the colored transparent plate 15 is inserted into the recess 3 of the cover 1.
The light emitting elements 7, 8 and the light receiving element 9 are mounted on the mounting surface of the cover 1.
An opaque coating 20 is provided except for a portion 19 corresponding to the photoelectric element and the front surface of the pilot lamp 10.

The opaque film 20 is formed by, for example, applying an acrylic paint or pasting a label, but the color is not limited as long as it is a dark color. In this embodiment, the portion 19 is formed into an elliptical shape, and an opaque coating 20 is formed by coating the portion 19 with black acrylic paint. The water supply control device A is used by being installed on a required mounting surface 21 such as a wall or ceiling. It is attached to a box 25 provided in a recess 24 of No. 21 via a mounting plate 26, and is arranged so as to cover the recess 24.

To explain in more detail, the box 25 is formed in the shape of a box with an open front, and is supported by a water supply part 22 which is housed inside and is connected to a water supply pipe 27 and an outflow pipe 39 which will be described later. recess 2
4, with its opening facing toward the opening of the recess 24. A fixing piece 29 having a screw hole 28 is provided in the opening so as to be vertically opposed to each other.

The mounting plate 26 is formed in the shape of a rectangular frame, and screw insertion holes 30 are provided on both the upper and lower sides of the mounting plate 26.
The screw 31 inserted through the hole 30 is inserted into the box 25.
By screwing it into the screw hole 28 of the fixing piece 29, it is connected to the front of the box 25 at an appropriate distance.

The mounting plate 26 depends on the screwing condition of the screws 31.
The distance from the box 25 is adjusted so that its back surface is always in close contact with the wall surface 21.

The mounting plate 26 also has screw holes 3 on both left and right edges.
The cover 1 is mounted and supported by these two pieces 33, 34, especially the cover attachment piece 33.

That is, the cover 1 has a screw insertion hole 35 on its side surface, and is removably attached to the mounting plate 26 by screwing a screw 36 inserted through the hole into the screw hole 32 of the cover mounting piece 33.

Further, an elastic body 37 is inserted between the upright piece 34 and the cover 1 to ensure a seal between the cover 1 and the wall surface 21 above the recess 24. In addition, 38 is a urinal, 39 is an outflow pipe that supplies water to the urinal 38, and 4
0 is an electromagnet that operates the water supply section 22.

When the user approaches the urinal 38, the light beams projected from the light emitting elements 7 and 8 of the photoelectric detector main body 5 of the water supply control device A are diffusely reflected by clothes etc., and the reflected light beams are reflected by the light receiving element. 9, the pilot lamp 10 lights up and the electric control unit 23 enters the sensing state. When the user leaves the urinal 38 after urinating, the projected light beam is not received, the pilot lamp 10 goes out, and the electric control unit 23 is activated to energize the electromagnet 40 for a predetermined period of time, and the water supply unit 2 is activated.
2 to automatically clean the urinal 38.

In the illustrated example, the water supply control device A is attached to the box 25 via the attachment plate 26, as described above.
Although the recess 24 is covered, it is optional to directly attach it to a necessary attachment surface 21 such as a wall surface by an appropriate means without using the attachment plate 26.

The angle can also be changed by cutting the front plate 11 diagonally and attaching it to the cover 1.

Furthermore, the means for attaching the colored transparent plate 15 to the cover 1 is not limited to the combination of the legs 16 and the speed nuts 18, but any means such as nuts, pin adhesives, etc. that can be used to support the transparent plate 15 to the cover 1 may be used. good. Furthermore, a portion 19 corresponding to the front surface of the pilot lamp 10 and photoelectric elements such as the light emitting elements 7 and 8 and the light receiving element 9 is formed in an elliptical shape on the side of the colored transparent plate 15 that is attached to the cover 1. Although the opaque coating 20 is provided except for part 19, the shape of this part 19 is arbitrary, and may be circular or polygonal.
Alternatively, the light projecting elements 7 and 8, the light receiving element 9, and the pilot lamp 10 may be formed separately. The above part 1 is on the front of the pilot lamp 10.
9 may not be provided.

Further, the photoelectric detector main body 5 includes a pilot lamp 1.
0, and may include only the light emitting elements 7, 8 and the light receiving element 9, or only one of them. Further, as the photoelectric detector main body 5, in addition to the above-mentioned diffuse reflection type photoelectric detector, any photoelectric detector such as a retroreflection type, a reflected light amount variable type, a light amount variable type, a transmission type, etc. can be used.

Furthermore, the water supply unit 22 controlled by this photoelectric detector main body 5 includes a solenoid valve, an electromagnetic flush valve, an electric valve, a combination of an electromagnetic siphon and a water tank, a combination of an electric operated valve and a water tank equipped with an automatic siphon,
Electrically operated low tank etc. are optional, Box 2
5 is not necessary. Of course, the photoelectric detector main body 5 and the water supply section 22 may be provided separately, or may be exposed from the mounting surface 21.

<Effects of the Invention> Since the present invention has the above configuration, it has the following advantages.

The peripheral edge of the front end surface of the photoelectric detector main body in which the photoelectric element is embedded is in contact with the dark opaque coating applied to the back side of the colored transparent plate except for the front part of the photoelectric element, and then turned toward the rear side. By fixing it in the recess on the surface of the inclined surface of the cover, which is tilted diagonally downward, the colored transparent plate eliminates light incident from the back and side surfaces of the colored transparent plate, making the entire colored transparent plate appear dark. By tilting the plate diagonally downward, the photoelectric element is less noticeable, and there is no risk of mischief, such as blocking the portion of the colored transparent plate located in front of the photoelectric detector with gum or the like.

Since the colored transparent plate is attached to the sloped surface of the cover, dirt and dust do not easily adhere to the colored transparent plate, and the operation of the photoelectric element is not inhibited.
It is difficult for the illumination light from the lighting installed on the ceiling of the toilet to enter the photoelectric element, and in addition, an opaque coating is provided on the back side of the colored transparent plate except for the front side of the photoelectric element, and the periphery of the front side of the photoelectric detector body is covered with the opaque coating. Since they are fixed in contact with each other, it is possible to completely prevent disturbance light from entering the photoelectric element, and it is possible to completely prevent malfunctions of the photoelectric detector.

Since the photoelectric detector is attached to the inclined surface of the cover, the projected light is projected diagonally downward and can be reliably detected even if the user is a child.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional plan view of the water supply control device of the present invention, with main parts cut away. FIG. 2 is a rear view, partially cut away, of a transparent plate, which is a main component of the present invention, and FIG. 3 is a plan view, partially cut away. Figures 4 to 8 show examples of usage conditions; Figure 4 is a longitudinal side view, Figure 5 is a partially cutaway front view, Figure 6 is a cross-sectional plan view, and Figure 7 is an example of an installed condition. FIG. 8 is a perspective view showing the state of use. A...Water supply control device, 1...Cover, 1a...
Inclined surface, 3... Recess, 4... Window hole, 5... Photoelectric detector body, 7, 8, 9... Photoelectric element, 15... Colored transparent plate, 19... Corresponds to the front surface of the photoelectric element. Part, 20... Opaque coating, 22... Water supply part.

Claims (1)

[Scope of utility model registration request] A cover is provided with a recess having a window hole on the surface of the sloped surface that is inclined diagonally downward toward the rear surface, and the cover is attached to the cover so as to face the window hole from the back side of the cover, and is connected to the water supply section. and a colored transparent plate that is attached to the recess of the cover so as to face the window hole from the front surface side of the cover and covers the window hole, and the photoelectric detector is mounted on the back side of the colored transparent plate. A dark opaque coating is applied to the front part of the photoelectric element buried in the front end surface of the detector body, and the photoelectric detector body is fixed to the cover and the periphery of the front end surface of the photoelectric detector body is coated with an opaque coating. A water supply control device characterized by being brought into contact with each other.