JPH0547802Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an automatic faucet that automatically controls the start and stop of water supply.

(B) Prior Art Conventionally, such automatic faucets have been known in various forms, such as those described in Japanese Patent Application Laid-open No. 145979/1983.

That is, in such an automatic faucet, the sensing section, the control section, the driving section, and the water supply section are integrally attached to the faucet main body, and the cover body is detachably attached to the faucet main body. By removing the cover body, each of the above-mentioned functional parts can be maintained and inspected.

(c) Problems to be solved by the invention However, such conventional automatic faucets still have the following problems.

That is, in the above-mentioned automatic faucet, since each functional part is integrally attached to the faucet body, it is difficult to maintain and inspect each functional part, and in particular, the electrical parts are time-consuming to maintain and inspect. Disassembly/disassembly of control and drive parts
There was a problem that it was difficult to remove and required work before maintenance and inspection.

In addition, because the faucet body and the cover body, which is removably attached to the faucet body, are not sufficiently waterproof when installed, splashed water may enter the inside of the automatic faucet, causing the control unit, etc. There was a problem with electrical parts breaking down.

An object of the present invention is to provide an automatic faucet that can solve the above problems.

(d) Means for solving the problem The present invention provides a cylindrical electromagnetic on-off valve housing with an opening at the top in the upper part of the faucet body, and a cylindrical valve with an opening at the bottom in the upper cylindrical wall of the housing. The cylindrical fitting part that is integrally connected to the lower inner surface of the storage section for controllers, etc. is removably fitted, and the screw holes and through holes are aligned with the upper fitting wall and the cylindrical fitting part, respectively. A retaining bolt with a head is screwed into the screw hole from the outside, the tip of the bolt extends into the through hole, and a packing is attached to the back of the head of the retaining bolt. Furthermore, the present invention relates to an automatic faucet characterized in that an O-ring is attached to the fitting surface between the upper fitting wall and the cylindrical fitting part.

(E) Functions and Effects With the configuration described above, the present invention has the following functions and effects.

In the present invention, the automatic faucet is provided with a cylindrical electromagnetic on-off valve storage part with an opening at the top in the upper part of the faucet body, and a cylindrical controller etc. with an opening at the bottom on the upper cylindrical wall of the storage part. The automatic faucet can be easily disassembled to facilitate maintenance and inspection of electrical parts such as electromagnetic on-off valves and controllers. It can be done quickly.

In the present invention, the automatic faucet has the upper cylindrical wall of the electromagnetic valve storage part and the cylindrical fitting part of the controller etc. storage part in the fitting part, respectively.
A screw hole and a through hole are provided in alignment, a retaining bolt with a head is screwed into the screw hole from the outside, and the tip of the bolt is extended into the through hole, and the retaining bolt is provided with a head. A gasket was attached to the back side of the solenoid valve housing, and an O-ring was attached to the fitting surface between the upper cylindrical wall of the solenoid valve housing and the cylindrical fitting part of the controller housing. It is possible to make the connection with the storage part strong, and it is also possible to reliably prevent splashed water from entering the inside of the automatic faucet through the outer circumferential surface of the above-mentioned retaining bolt. Failure of electrical parts such as controllers can be minimized.

(f) Examples The present invention will be described in detail below based on examples shown in the attached drawings.

FIG. 1 shows a washbasin B equipped with an automatic faucet A according to the present invention.

As shown in the figure, the automatic faucet A in this embodiment has the following features:
It is placed in a fixed state on the back placement surface 10a of the washbowl 10. In addition, 11 is the wash basin 10
This is a drain pipe connected to the bottom of the

Figure 2 shows the internal structure of automatic faucet A.
The automatic faucet A includes a faucet body 20 that forms a flow channel that is opened and closed by an electromagnetic on-off valve C, and an electromagnetic on-off valve C that is formed on the upper part of the faucet body 20.
An operation for integrally housing the controller D that controls the drive of the controller D, the starting parts E and F that send control signals to the controller D, the electromagnetic on-off valve C, and the battery type power supply G for the controller D and the starting parts E and F. It is composed of a section 21.

First, to explain the structure of the faucet main body 20, in FIG. The communication pipe 32 protruding from the lower end of the bottom plate 30 is connected to the inner mounting surface 10a.
It extends to the lower part of the washbasin 10 through a through hole 33 formed in and is connected to a water supply pipe 34 .

Furthermore, between the bottom plate 30 of the faucet main body 20 and the upper wall 35 disposed at an interval above the bottom plate, there are an inflow side flow path 37 and an outflow side flow path 38 separated by a partition wall 36. It is formed.

The upper wall 35 includes an inflow channel 37.
An inflow side valve hole 39 and an outflow side valve hole 40 are bored at a location above the outflow side flow path 38.
These valve holes 40 are brought into communication with each other by the opening operation of an electromagnetic on-off valve C, which will be described later.

Further, the faucet main body 20 extends in an upright manner toward the front of the washbowl 10, and the extension portion 2
A discharge side flow path 41 that communicates with the above-mentioned outflow side flow path 38 is formed inside the extension portion 20a, and a discharge opening 42 that communicates with the discharge side flow path 41 is formed at the tip of the extension portion 20a. There is.

Further, on the upper wall 35 of the faucet main body 20, a cylindrical electromagnetic on-off valve storage part 45 whose axis is inclined at a constant inclination angle α toward the front of the washbowl 10 is integrally arranged. The electromagnetic on-off valve C is housed in the housing section 45 through its upper end opening.

As shown in FIG. 2, the electromagnetic on-off valve C is
It consists of a latching solenoid 46 disposed concentrically within the latching solenoid 46 and a diaphragm valve 47 disposed in front of the latching solenoid 46.
By moving forward and backward, the diaphragm valve 47 can be opened and closed, thereby communicating and blocking the inflow-side flow path 37 and the outflow-side flow path 38.

Note that 50 is a diaphragm valve pressing ring mounted in a lower storage section 45c provided below the electromagnetic on-off valve storage section 45.

To install and fix the electromagnetic on-off valve C into the electromagnetic on-off valve housing 45, first, the diaphragm valve 47 is installed so that its diaphragm 47a is connected to the valve holes 39, 4.
The diaphragm valve pressing ring 50 is installed in the lower housing part 45c so that it can be opened and closed.
The lower mounting plate 5 of the latching solenoid 46 is mounted in the lower housing part 45c, and the lower mounting plate 5 of the latching solenoid 46 is attached with the connecting bolt 51 as shown in FIGS. 2 and 3.
2 is connected and fixed to an annular stepped portion 45b formed on the inner surface of the electromagnetic on-off valve storage portion 45.

Next, a controller D that is formed on the upper part of the faucet body 20 and controls the driving of the electromagnetic on-off valve C, activation parts E and F that send control signals of the controller D, an electromagnetic on-off valve C, and a controller are installed inside. D
The configuration of the operating section 21 that integrally houses the battery-type power source G for the starting sections E and F will be explained.

As shown in FIG. 2, the operating section 21 has a cylindrical controller storage section 60 disposed coaxially above the electromagnetic on-off valve storage section 45, and a base end that is integrally connected to the controller storage section 60. and its tip,
The faucet main body 20 includes an extended portion 61 that is extended in a state where it overlaps with the extended portion 20 of the faucet body 20.

The operating portion 21 forms a casing of the automatic faucet B having a watertight structure by connecting its lower peripheral edge 62 to the upper peripheral edge 63 of the faucet main body.

Further, 64 is a cylindrical fitting part that is integrally connected to the lower inner surface of the controller storage part 60, and the cylindrical fitting part 64 is removably inserted into the electromagnetic on-off valve storage part 45. Furthermore, an O-ring 65 is installed between the outer circumferential surface of the cylindrical fitting portion 64 and the inner circumferential surface of the electromagnetic on-off valve housing portion 45 .

With this configuration, the faucet main body 20 and the operating section 2
This further improves the watertightness of the joint surface in step 1, making it possible to reliably prevent splashed water from entering the automatic faucet A, and prevent failures of electrical components such as the electromagnetic on-off valve C and controller D. It can be effectively prevented.

Furthermore, in FIGS. 2 and 4, 66 is the upper cylindrical wall of the electromagnetic on-off valve storage portion 45 and the cylindrical fitting portion 6.
This bolt is attached to the fitting part with the lower cylindrical wall of 4, and by sewing the cylindrical fitting part 64 to the electromagnetic on-off valve storage part 45, the operation part 21 can be securely attached to the faucet main body 20. can be fixed to.

Details of the retaining structure using the retaining bolt 66 shown in FIG. 5 are shown. As shown,
The upper cylindrical wall of the electromagnetic on-off valve housing portion 45 and the lower cylindrical wall of the cylindrical fitting portion 64 each have a screw hole 45.
d and the through hole 64a are provided in alignment.
The head 6 has a diameter larger than that of the shaft portion 66b.
The retaining prevention bolt 66 having the retaining bolt 6a has its shaft rod portion 66b screwed into the screw hole 45c from the outside, and the tip of the shaft rod portion 66b extends into the through hole 64a. A packing 66c is attached to the back side of the head 66a. The packing 66c is provided on the outer circumferential surface of the electromagnetic on-off valve accommodating portion 45, and is housed in a recess having a depth approximately equal to the thickness of the packing 66c.

With this configuration, it is possible to reliably prevent splashed water and the like from flowing into the electromagnetic on-off valve storage section 45 through the screw hole 45d through which the fastening bolt 66 passes and the through hole 64a, and prevent the electromagnetic on-off valve C and the controller from entering. Failures such as D can be reduced as much as possible.

In addition, in FIG. 2, controller D is
The mounting board 70 is attached by connecting bolts 71 to one side surface of a controller etc. mounting frame 72 arranged in the axial direction in the controller etc. storage section 60, and the U-shaped bottom plate of the mounting machine frame 72 72a
is connected to the upper end of the latching solenoid 46 by a connecting bolt 73.

Further, a battery-type power source G is attached to the other side surface of the controller-mounting machine frame 72 in such a manner that it is held in a detachable manner by utilizing the elastic force of the machine frame 72.

With this configuration, the controller E and the battery type power source G can be compactly stored in the controller storage section 60.

Also, the mounting plate 52 of the latching solenoid 46
The electromagnetic on-off valve C, the controller D, and the battery G are integrally attached to the faucet main body 20 by attaching to or removing from the annular step 45b of the electromagnetic on-off valve storage section 45, Alternatively, it can be removed from the faucet main body 20.

Next, the configuration of the activation section E will be explained. In this embodiment, the activation section E is formed as a touch switch attached to the upper wall 60a of the controller storage section 60.

That is, in FIG. 2, a recess is formed in the upper surface of the upper wall 60a of the controller housing section 60, and a flat plate-shaped touch switch main body 80 is mounted within the recess. Further, on the top surface of the touch switch main body 80, a display board 81 on which symbols and characters such as ON and OFF are printed is placed in an overlapping state.

A conductive plate 82 is attached to the lower surface of the upper wall 60a of the controller storage section 60, and the conductive plate 82 includes a lead wire 83 and a spring contact 84 whose one ends are connected to the touch switch body 80 and the controller D, respectively. The other end is in contact.

With this configuration, when removing the controller etc. storage section 60 from the electromagnetic on-off valve storage section 45, the electrical connection with the storage section 45 can be completely severed, so that removal can be easily performed. Similarly, the controller storage section 60
By connecting the controller D to the electromagnetic on-off valve housing 45, the starter E can be easily electrically connected to the controller D.

Furthermore, in this embodiment, the axis of the operating part 21 is on an extension of the axis of the electromagnetic on-off valve storage part 45,
Therefore, like the electromagnetic on-off valve storage section 45, the operating section 21 is also tilted forward at an angle α toward the front of the washbasin 10.

Therefore, the display board 81 provided at the top of the controller storage section 60 is also tilted forward, making the display board 81 easy to see and operate, allowing the user to easily and reliably operate the activation section E. I can do it.

Further, in this embodiment, the starting part F is the second
As shown in the figure and FIG. ing.

Such a sensor includes, for example, a light projector 91 and a light receiver 9 that receives reflected light that is diffusely reflected when the infrared rays projected from the light projector 91 hit the hand.
A diffuse reflection type photoelectric sensor 93 consisting of 2 can be used.

In addition, in Fig. 2 and Fig. 6, 94, 95
are a pair of through holes provided at the lower end of the extension portion 20a of the faucet body 20, and a light projector 91 and a light receiver 92 extend downward through the through holes 94 and 95.

Further, reference numeral 96 denotes a connecting bolt that passes through the diffuse reflection type photoelectric sensor 93 and connects the tip of the extension part 20a of the faucet main body 20 and the tip of the extension part 61 of the operating part 21. While firmly fixing, the faucet main body 20 and the operation part 21
It is possible to further improve the watertightness between the upper and lower peripheral edges 62 and 63, which are the joint surfaces.

Further, reference numeral 97 indicates a starting part mounting space 90 and an operating part 2.
This space 97 is a wiring space for wiring such as lead wires that communicates with the inside of the storage unit 60 for controllers, etc. 1, and a lead wire 98 that connects the controller D and the activation unit F is disposed within the space 97.

Next, a method of using the automatic faucet A having the above configuration will be explained.

The photoelectric sensor 93 of the starting part F is activated by pressing the touch switch 80 of the starting part E, or by placing your hand under the front of the automatic faucet A.
or actuating the starting part F, the controller D is actuated by the output, and the electromagnetic on-off valve C is actuated to open the diaphragm valve 47.
is opened, and the inflow side flow path 37 and the outflow side flow path 38 are communicated with each other. As a result, water is discharged from the discharge opening 42 into the washbowl 10.

Also, when the touch switch 80 is pressed again to activate it, or when the photoelectric sensor 93 is activated by removing the hand from the front lower part of the automatic faucet A, the controller D is activated by the output, and the electromagnetic on-off valve C is activated. Then, the diaphragm valve 47 is closed, and the communication between the inflow side flow path 37 and the outflow side flow path 38 is cut off. As a result, the discharge of water from the discharge opening 42 into the washbasin 10 is stopped.

As stated above, the invention according to this example is
It has the following actions and effects.

The automatic faucet A has a cylindrical electromagnetic on-off valve storage part 45 with an open top end in the upper part of the faucet main body A, and a cylindrical controller storage part 60 with an open bottom end in the upper cylindrical wall of the storage part 45. The automatic faucet A can be easily disassembled to remove electrical parts such as the electromagnetic on-off valve C and the controller D. maintenance and inspection can be carried out easily and quickly.

The automatic faucet A aligns the screw hole 45d and the through hole 64a with the upper cylindrical wall of the electromagnetic on-off valve storage part 45 and the cylindrical fitting part 64 of the controller storage part 60, which fit into each other. A retaining prevention bolt 66 with a head 66a is screwed into the threaded hole 45d from the outside, the tip of the bolt extends into the through hole 64a, and a gasket 66c is attached to the back side of the retaining bolt 66. In addition, an O-ring 65 was attached to the fitting surface between the upper cylindrical wall of the electromagnetic on-off valve storage part 45 and the cylindrical fitting part 64 of the controller etc. storage part 60, so that the electromagnetic on-off valve storage part 45 and The connection with the controller storage portion 60 can be made strong, and it is also possible to reliably prevent splashed water and the like from entering the interior of the automatic faucet A through the outer peripheral surface of the retaining bolt 66. , failures of electrical components such as the electromagnetic on-off valve C and the controller D can be minimized.

In addition, in the illustrated embodiment, the activation parts E and F are used together, but it is also possible to use either one of them.
Furthermore, other types of sensors such as optical sensors and ultrasonic sensors can also be used.

[Brief explanation of the drawing]

Fig. 1 is a front view of a washbasin equipped with an automatic faucet according to the present invention, Fig. 2 is a sectional side view showing the overall configuration of the automatic faucet, and Figs. 3 and 4 are Figs.
FIG. 5 is an enlarged explanatory view of the retaining structure using the retaining bolt, and FIG. 6 is a cross-sectional view taken along the -- line in FIG. 2. In the diagram, A... Automatic faucet, B... Wash basin, C...
Electromagnetic on-off valve, D...controller, E...starting part, F...starting part, G...battery type power supply, 2
0... Faucet body, 45... Solenoid on/off valve housing, 4
5d...screw hole, 64a...through hole, 66...removal prevention bolt, 66a...head, 66c...packet.

Claims (1)

[Scope of utility model registration request] A cylindrical electromagnetic on-off valve storage part 45 with an open top end is provided in the upper part of the faucet body 20, and is integrated into the upper cylindrical wall of the storage part 45 and the lower inner surface of a cylindrical controller storage part 60 with an open bottom end. A cylindrical fitting part 6 connected to the
4 is removably fitted, and a screw hole 45d and a through hole 64a are formed in the upper fitting wall and the cylindrical fitting part 64, respectively.
A retaining bolt 66 with a head 66a is screwed into the threaded hole 45d from the outside, and the tip of the bolt 66 is inserted into the through hole 64a.
The head 6 of the bolt 66 that extends inward and prevents it from coming out
Attach the packing 66c to the back of 6a, and further,
An automatic faucet characterized in that an O-ring 65 is attached to a fitting surface between an upper fitting wall and a cylindrical fitting part 64.