JPH02178432A - Discharge metal fitting fixing structure for automatic cock - Google Patents

Abstract

PURPOSE:To prevent breaking of a cord by inserting the sensor-cord connected to a hand sensing sensor, etc., mounted to a discharge metal fitting and a guide pin respectively into a notch space and a through hole of a lower mounting washer. CONSTITUTION:An upper regulating ring 45 is fitted on the base end of a discharge metal fitting in which a sensor-cord previously incorporated. The upper end of a discharge water passage connecting pipe 41 and the upper end of a guide pin 51 for guiding a washer are screwed into the thread part of the discharge metal fitting. The connecting pipe 41 is then extended through a discharge metal fitting mounting opening 42 of a washbowl, and a lower fitting part 45c of the ring 45 is extended through the opening so that the fitting part 45c is fitted through a seal ring 44 into the opening 42. Further, from the lower end of the connecting pipe 41, an inner clip washer 47, a lower mounting washer 48 and clamping nut 49 are fitted on the outer peripheral surface of the connecting pipe 41, and the pin 51 is extended through a through hole 55. Further, the nut 49 is turned to screw a male screw part of the connecting pipe 41 into a female screw hole 49a and to press the inner clip washer 47 against the surface of an inner bowl installation place.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an automatic faucet that can discharge and stop water based on sensor output from a hand sensing sensor or the like.

(B) Prior Art Conventionally, the present applicant previously filed a patent application filed in 1983 as a form of structure for fixing the above-mentioned automatic faucet to a mounting surface at the back of a washbowl.
There is one disclosed in No. 170521.

This water spout fitting fixing structure essentially connects the water spout flow path connection pipe, whose upper end is connected to the lower part of the water spout fitting, to the water spout fitting mounting opening provided on the water spout fitting mounting plate, such as at the back of the washbowl. passing through and extending downward, and overlapping in the vertical direction around the outer circumferential surface of the downwardly extending portion of the water discharge flow path connecting pipe,
Attach a lower mounting washer and a tightening nut, screw the tightening nut onto a male thread provided on the downward extension of the water outlet flow path connecting pipe, and press the lower mounting washer to the lower surface of the water outlet fitting mounting plate, and
The lower mounting washer is formed into a substantially horseshoe shape, and a notch space is formed on its outer periphery, and a sensor cord, etc. connected to a hand detection sensor, etc. attached to the water discharging fitting can be inserted into the notch space. It has the following characteristics.

With this configuration, it is possible to insert the sensor cord, etc. pulled out downward from the water spouting fitting into the lower mounting washer even from the middle part thereof, making it easy to install the lower mounting washer. By screwing the tightening nut below the washer to the external thread provided on the outer circumferential surface of the water spout flow path connecting pipe that hangs down from the water spout metal fitting, the water spout metal fitting can be tightened between the base of the water spout metal fitting and the top surface of the lower mounting washer. The mounting plate can be clamped, and therefore the work of mounting and fixing the water discharging fitting can be done easily and in a short time.

(c) Problems to be Solved by the Invention However, this water discharge fitting fixing structure still has the following problems to be solved.

That is, in the water spouting fitting fixing structure described above, since the lower mounting washer is simply fitted around the outer circumferential surface of the water spouting flow path connecting pipe, the lower mounting washer is also integrally attached as the tightening nut rotates. Therefore, there is a risk that the sensor cord may be caught between the lower mounting washer and the water spouting fitting mounting plate.

As a result, the sensor cord is disconnected, resulting in malfunction of the hand sensor.

Also, since the notch space position of the lower mounting washer is not constant,
There may be cases where the sensor cord must be pulled out to the outside in a state in which it has returned one position, making the pulling operation difficult, and there is also a risk that the sensor cord may be twisted and disconnected.

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

(d) Means for Solving the Problems The present invention provides a method in which a water spout flow path connecting pipe whose upper end is connected to the lower part of a water spout fitting is extended downward through a water spout fitting mounting opening provided on a water spout fitting mounting plate. , a lower mounting washer and a tightening nut are installed around the outer circumferential surface of the downwardly extending portion of the water outlet flow path connecting pipe in an overlapping state in the vertical direction, and an identical tightening nut is installed on the lower extending portion of the water outlet flow path connecting pipe. The lower mounting washer is crimped to the lower surface of the water spouting fitting mounting plate by screwing into the taper part, and the lower mounting washer is formed into a substantially horseshoe shape, and a notch space is formed on the outer periphery of the lower mounting washer. A sensor cord, etc. connected to a hand detection sensor etc. attached to the water spouting fitting can be inserted into the space, and a guide bin for guiding the washer that extends downward is provided at the bottom of the water spouting fitting, and a guide bin that is similar to the lower mounting washer is provided at the bottom of the water spouting fitting. This invention relates to a water discharging fitting fixing structure in an automatic faucet characterized by providing a bottle insertion hole through which a guide bottle is inserted.

(E) Function In this invention, the water spout flow path connection pipe whose upper end is connected to the lower end of the water spout fitting is extended downwardly through the water spout fitting mounting opening provided in the water spout fitting mounting plate. Attach the lower mounting washer and tighten around the outer circumferential surface, and then
By rotating the tightening nut, the lower mounting washer is pressed onto the lower surface of the water spout fitting mounting plate, and the water spouting metal fitting is fixed to the water spouting metal fitting mounting plate.

In such a fixing operation, in the present invention, when the lower mounting washer is attached to the water spout flow path connecting pipe, the guide bin for guiding the washer extending downward from the base of the water spouting fitting is inserted into the bottle insertion hole provided in the lower mounting washer. Therefore, the lower mounting washer will not be moved by subsequent rotation of the tightening nut. Therefore, it is possible to reliably prevent the sensor cord from being caught between the lower surface of the water discharge fitting mounting plate and the upper surface of the lower mounting washer due to the lower mounting washer being caught, and to reliably prevent the sensor cord from breaking. Can be done.

In addition, the cutout space provided in the lower mounting washer can be positioned in a certain direction so that the sensor cord can be easily pulled out.
It is possible to prevent the sensor cord from being twisted, and it is also possible to easily pull out the sensor cord.

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

Figure 1 shows the inside of a toilet with a large number of washbasins B installed on top of the cabinet.As shown in the figure, each washbasin B
is equipped with an automatic faucet A according to the present invention.

Also, in Figures 2 and 3, a washbasin B and an automatic water faucet A are shown.
As shown in the figure, a washbasin B is fitted and fixed into a mounting groove cut out in a counter forming the upper part of a cabinet C.

Next, the overall configuration of the automatic faucet A will be explained with reference to Part 3. On the back mounting surface 10a of the washbowl 10 of the washbasin B, which functions as a spout fitting mounting plate, there is a fixed state. The water spouting fitting 11 is i! It is placed.

Further, an automatic faucet control box 13 is disposed below the washbasin lO, which is connected to the water spouting fitting 11 through a hot water supply pipe 12.

Furthermore, in the above configuration, the automatic faucet control bonji 13
Inside, there is an electromagnetic on-off valve 14 that communicates with the upstream side of the hot water supply piping 12, a thermostand type mixing valve 15 that communicates with the electromagnetic on-off valve 14, and controls the operation of the electromagnetic on-off valve 14 and various sensors to be described later. a control device 16 for controlling;
A power supply device 17 is integrally housed therein.

In addition, as shown in FIGS. 4 and 5, the thermostand type mixing valve 15 has one end supported by being buried in the wall, and a hot water supply side pipe 18 and a water supply side piping 18 each having a built-in water stop valve in the base. The port on the other end side of the pipe 19 is connected for communication.

With this configuration, when the electromagnetic on-off valve 14 is driven to open, mixed hot water at an appropriate temperature is supplied through the hot water supply side piping 18 and the water supply side piping 19 -> thermostatic stand type mixing valve 15 -> electromagnetic on/off valve 14 - hot water supply piping 12. Water can be discharged into the washbasin B from the water discharging fitting 11.

Next, the structure of the water discharging fitting 11, which is the gist of the present invention, will be explained in detail with reference to FIG. 3 and FIGS. 6 to 14.

As shown in FIG. 3, the water spouting fitting 11 is essentially made of a synthetic resin material such as plastic on the back side of a metal fitting main body 21 made of cast iron and having a water spouting channel 20 integrally formed in its wall. A sensor, etc. protection cover 22 is removably attached, and a sensor, etc. installation space S is formed between the metal fitting body 21 and the sensor, etc. protection cover 22, and the sensor, etc. installation space S is
It is characterized by a structure in which a hand detection sensor 24 and the like are housed inside.

In the above configuration, first of all, the structure of the metal fitting body 21 will be explained. As shown in FIGS. At the same time, the distal end thereof extends in an upwardly inclined state toward the front of the washbasin 10.

Further, as shown in FIG. 6, the fitting main body 21 forms an elongated space 25 with a substantially semicircular cross section over substantially its entire length, and a part of the elongated space 25 is part of the upper wall 21a. and an L-shaped partition wall 21b.
0 is formed.

Further, the elongated space 25 provided in the metal fitting body 21 can form the above-mentioned sensor mounting space S in cooperation with the sensor protection cover 22, which will be described in detail later.

Next, the configuration of the tip of the metal fitting body 21 will be explained with reference to FIG. 3. The tip is provided with a front wall 2G and a transverse partition 27 spaced apart from the front wall 26 by a certain distance. It is being A hand anger sensor 24 is housed in a sensor installation space 28 between the front wall 26 and the transverse bulkhead 27.

On the other hand, at the rear of the transverse partition wall 27, as shown in FIGS. 3 and 6, a sensor cord storage space 29 is formed which extends to the base end of the metal fitting body 21.

That is, the sensor installation space S is formed from the sensor installation space 28 and the sensor cord storage space 29.

In addition, in the metal fitting main body 21, as shown in FIG. The cylindrical opening 30 is formed by working with the transverse partition wall 27 by 1μ.

A water discharge cap 30a is detachably screwed into the cylindrical opening 30.

Furthermore, to explain the structure of the base of the metal fitting main body 21, as shown in FIGS. 3 and 7, the base includes a semicircular rear wall 21c forming an extension of the above-mentioned upper wall 21a, It is formed from a pair of front distraction walls 21d, 21d extending forward in parallel from both front ends of the rear wall 21c.

As shown in FIG. 7, the base of the metal fitting main body 21 cooperates with the base 22a of the sensor protection cover 22 to form a cylindrical metal fitting attachment part.

Next, the structure of the sensor protection cover 22 will be explained. As shown in FIG. The water discharging metal fitting 11 can be formed by detachably attaching the water discharging metal fitting 11 to the water discharging metal fitting 11.

In this embodiment, the protective cover 22 for sensors, etc. is attached by connecting the tip and center of the protective cover 22 to the tip boss of the metal fitting body 21 with connecting screws 31 and 32, respectively, as shown in FIG. This is done by screwing the portion 33 and the central boss portion 34 together.

Further, as shown in FIG.
A cylindrical opening 30 is provided with a sensor through-hole 35 for exposing the sensor 4a to the outside, and a water spouting camp 30a is screwed into the cylindrical opening 30 at a position spaced backward from the sensor through-hole 35.
A water discharge opening 3G is provided to expose the water to the outside.

Furthermore, as shown in FIG. 7, a protective cover 22 for sensors etc.
The base 22c is flat, and as mentioned above,
In cooperation with the base portion 21c of the metal fitting main body 21, a watertight cylindrical metal fitting attachment portion can be formed.

Further, with this configuration, the sensor protection cover 22 is connected to the metal fitting main body 21 in a watertight manner over the entire length.

Furthermore, the installation space for sensors, etc. is not completely watertight, and therefore, the intruding water is blocked by the weir 100 from both sides of the protective cover 22, or from the base 22a of the sensor, etc. protective cover to the upper regulating ring (described later). It is configured so that it escapes from the gap between the 45 and 45.

Next, referring to FIGS. 3, 9, and 10, the non-sensing sensor 24 and the square root sensing The sensor cord 37 connecting the sensor 24 and the control device 16 will be explained.

First, to explain the structure of the non-sensing sensor 24, as shown in FIG. 9, a sensor mounting space 38 with a sensor through hole 35 opened in the lower surface is formed on the top surface of the tip of the sensor protection cover 22. There is.

In the sensor mounting space 38, a sensor block 24a, a sensor substrate 24b, and a transparent plate 24c are molded with a resin molding agent 24d into a rectangular box consisting of a rectangular cylindrical sensor case 24e and a case cover 24f. It will be integrally molded.

In the above configuration, the sensor element mounting holes 24g and 24h are provided in the sensor block 24a at intervals, and the mounting holes 24g and 24h each include a photo sensor whose base end is connected to the sensor board 24b. A light emitting element 24i made of a transistor and a light receiving element 24j made of a photodiode are attached.

When the light receiving element 24j receives the infrared rays emitted from the light projecting element 24t and reflected by the hand, the non-sensing sensor 24 generates a detection output, and the control device 16
By sending an output signal to and driving the electromagnetic on-off valve 14, hot water can be automatically spouted from the spouting camp 30a.

Next, the non-sensing sensor 24 having the above configuration is connected to the control device 1.
The configuration of the sensor cord 37 connected to 6 will be explained.

As shown in FIGS. 9 and 10, on the upper surface of the sensor board 24b, ? ! One end of the sensor cord 37 is connected to the case cover 2, and the other end of the sensor cord 37 is connected to the case cover 2.
Through the sensor code lead-out passage 24k provided within 4f,
It extends within the sensor cord storage space 29 formed between the fitting body 21 and the sensor protection cover 22, and is then connected to the control device 16 through the cylindrical fitting attachment part of the automatic faucet A.

In such a configuration, as shown in FIGS. 9 and 10, the sensor code lead-out end 2 is connected to the sensor code lead-out passage 24.
4! In addition to press-fitting a 24m rubber bunsch,
One end of the sensor cord 37 is embedded in the resin molding agent 24d.

Therefore, the adhesion between the sensor cord 37 and the resin molding agent 24d is improved, the waterproofness of the hand sensing sensor 24 can be significantly improved, and malfunctions of the sensor 24 can be reliably prevented.

Further, in this embodiment, the sensor case 24e has a ninth
As shown in the figure, a support bracket 24n extends rearward from the rear wall, and the bracket 24n is cantilevered to the sensor protection cover 22 by a fixing pole 24o.

Further, as shown in FIG. 3, the plurality of sensor cords 37 are extended into the sensor cord storage space 29 and then surrounded by a sensor cord protection cable 39, which is connected to the water discharging fitting 11. Through the base, it is connected to a control device 16.

As shown in FIG. 3, the sensor cord protection cable 39 is equipped with a water return ring 39a at the rear of the sensor code storage space 29. It is possible to reliably prevent splashed water or the like that has entered the sensor cord protection cable 39 from traveling along the outer circumferential surface of the sensor cord protection cable 39 and reaching the control device 16, thereby causing a control failure.

Further, as shown in FIG. 6, the sensor cord protection cable 39 is detachably supported by a sensor cord mount 39d fixed to the upper surface of a column 39b erected at the center of the sensor protection cover 22 with a connecting screw 39c. has been done. Therefore, the sensor cord protection cable 39 can be positioned considerably above the upper surface of the sensor protection cover 22 through which splashed water flows, and the sensor cord 37 can be waterproofed from this surface.

Next, referring to FIG. 3, the metal fitting body 21 of the water spouting metal fitting 11
The automatic flush control box 1 is connected to the water discharge flow path 20 formed inside the
The hot water supply piping structure for supplying hot water from the hot water supply flow path 40 formed in 3 will be explained.

As shown in FIG. 3, the water spouting fitting 11 has a
A cylindrical threaded portion 41a that communicates with the lower part of the water discharge channel 20 is provided.

The upper end of the water discharge flow path connection pipe 41 is screwed into the cylindrical threaded portion 41a, and the lower end of the water discharge flow path connection pipe 41 is located on the back mounting surface 10a of the washbowl 10, and Metal fittings II
It passes through a water spout fitting attachment opening 42 provided directly below the base end of the water spout and extends downward.

Further, the lower end of the water discharge flow path connection pipe 41 is connected to the downstream end of the hot water supply pipe 12 in a watertight state using a union 43, while the upstream end of the hot water supply pipe 12 is connected to the downstream end of the hot water supply pipe 12 using a union 43. Hot water supply channel 40 formed in control box I3
It is connected to the downstream opening of the

With this configuration, when the electromagnetic on-off valve 14 is driven, the mixed hot water can be quickly supplied to the water discharge passage 20 via the hot water supply passage 40 → the hot water supply pipe 12 → the water discharge passage connection pipe 41.

Next, with reference to FIG. 3, FIG. 7, FIG. 8, and FIG. 11, a water spouting metal fitting fixing structure for fixedly connecting the water spouting metal fitting 11 to the back placement surface 10a of the wash basin area 0 will be described.

As shown in FIG. 3 and FIG.
An upper seal ring 44 and an upper regulation ring 45 are provided in an overlapping state above the water spout fitting mounting opening 42 provided in the , and a chrysanthemum washer 4 is provided in a superposed state below the water spout fitting mounting opening 42 .
7, a lower mounting washer 48, and a tightening nut 49.

In the above configuration, as shown in FIG. 11, the upper regulation ring 45 has an annular collar part 45a provided at its central outer periphery, and a spout fitting fitting part 45b and a washbowl fitting part 45c formed above and below the ring flange part 45a. Consisting of

As shown in FIG. 3, the water spouting fitting fitting part 45b is fitted to the base of the water spouting fitting 11, and is integrally connected with the connecting bolt 50 shown in FIG. 7. On the other hand, the washbowl fitting part 45c is connected to the washbowl 10.
The water spout fitting 1 is fitted into the water spout fitting mounting opening 42 provided in the
The first mounting position can be positioned reliably.

Further, as shown in FIG. 11, the upper restriction ring 45 is
Water discharge flow path connection pipe 41. Sensor cord protection cable 39.
A heart-shaped deformed through hole 52 is provided to pass through a guide bin 51 for guiding a washer, which will be described later, and a through hole 53 for a bonobu assembling type drain plug operating rod is provided adjacent to the through hole 52.

In addition, as shown in FIG. 11, the lower mounting washer 48 includes an upper enlarged-diameter flange 48a having a cylindrical shape, and a lower cylindrical shape that is integrally connected to the flange 48a at a position eccentric from the center on the back surface. 48b.

As shown in FIGS. 8 and 11, the lower mounting washer 48 has a large diameter through hole 54 for inserting the water discharge flow path connecting pipe 41 at a position eccentric from its center, and a washer guide described later. A small-diameter bottle insertion hole 55 is provided for inserting the guide bottle 51 therethrough.

Further, as shown in FIG. 11, the lower mounting washer 48 is provided with an arc-shaped notch space 56 having a -@ opening to the outside at the periphery of the upper enlarged diameter flange 48a, and as shown in FIG. A sensor cord 37 and a pop-amp drain plug operating rod 57 are inserted into the notch space 56.

Next, the work of fixing the water spouting fitting 11 to the washbasin 10 using the water spouting fitting fixing structure having the above configuration will be explained with reference to FIGS. 3, 11, 12, and 13.

First, as shown in FIGS. 3 and 12, the upper regulating ring 45 is fitted onto the convex end of the water spouting fitting 11 in which the sensor cord protection cable 39 for protecting the hand detection sensor 24 and the sensor cord 37 has been installed. The upper end of the water discharge flow path connection pipe 41 and the upper end of the guide bin 51 for guiding the washer are connected to the tubular threaded portions 41a (FIG. 3) and 41b provided at the base end of the water discharge fitting 11. (Fig. 12) and connect and fix.

After the above-mentioned connection and fixing work is completed, as shown in FIG. It is fitted into the water discharging fitting mounting opening 42 via the upper seal ring 44.

From the lower end of the water discharge flow path connection pipe 41, the chrysanthemum washer 47. The lower mounting washer 48 and the tightening ring 9 are sequentially fitted onto the outer peripheral surface of the connecting pipe 41, and the guide pin 51 for guiding the washer is passed through the pin insertion hole 55 provided in the lower mounting washer 48.

Next, the tightening nut 49 is rotated to screw the male threaded portion 58 provided on the outer peripheral surface of the water discharge flow path connecting pipe 41 into the female threaded hole 49a, as shown in FIG.

Thereafter, if the tightening nut 49 continues to be rotated, the lower mounting washer 48 will move upward because the lower mounting washer 48 is prevented from rotating by the guide pin 51 for guiding the washer.

Furthermore, if the tightening nut 49 continues to be rotated, the 13th [
As shown in J, the chrysanthemum washer 47 is pressed against the back placement surface 10a of the washbowl IO.

As a result, the upper regulating ring 45 is strongly fixed to the washbasin 10, and the water spouting fitting 11, which is integrated with the upper regulating ring 45, is also strongly fixed to the washbowl 10.

In the work of fixing the water spout fitting, the lower mounting washer 48 has a horseshoe shape and an arcuate cutout space 56 with one end open, as shown in FIGS. 8 and 11, so that the sensor cord can be protected. The cable 39 can be fitted and secured into the arcuate notch space 56 from the outside side, and the work of fixing the metallic odor of discharged water can be carried out extremely easily despite the presence of the protective cable 39.

In addition, in the above fixing work, when attaching the lower mounting washer 48 to the water discharge flow path connecting pipe 41, the washer guiding guide bin 51 extending downward from the base of the water discharging fitting 11 is inserted through the bin provided on the lower mounting washer 48. Since the lower mounting washer 48 can be inserted through the hole 55, the lower mounting washer 48 will not be twisted even when the tightening nut 49 is rotated thereafter. Therefore, the sensor cord 37 due to the lower mounting washer 48 is
To reliably prevent jamming between the lower surface of a deep placement surface 10a of a washbowl IO and the upper surface of a lower mounting washer 48 or a chrysanthemum washer 47, and to reliably prevent disconnection of a sensor cord 37. Can be done.

In addition, the notch space 56 provided in the lower mounting washer 48 is
Since the J cord 37 can be positioned in a certain direction where it can be easily pulled out, the sensor cord 37 can be prevented from coming back, and the work of pulling out the sensor cord 37 can be easily performed.

Furthermore, in the present embodiment, a groove portion 58 provided on the outer circumferential surface of the water discharge flow path connection pipe 41 and a guide bin 51 for guiding the washer.
The relative positional relationship of is set so that the washer guiding guide pin 5■ cannot be screwed into the four female threaded holes 49a of the four tightening nuts until it is inserted into the pin insertion hole 55.
It is possible to reliably prevent construction errors and position the notch space 56 at the correct sensor cord extraction position as described above.

In addition, the pin insertion hole 55 provided in the lower mounting washer 48 in this embodiment has a sufficient length to insert the guide pin 51 for guiding the washer, so that Even if the water discharging fitting mounting plate such as the surface 10a is thin as shown in FIG. 14, the lower mounting washer 48 can be securely
It is possible to firmly and temporarily fix the water spouting metal fitting 11 by guiding the vertical movement of the water spouting metal fitting 11, and also to prevent accidents such as disconnection of the sensor cord 37.

After the above fixing work is completed, the lower end of the water discharge flow path connecting pipe 41 is connected to the upstream end of the hot water supply pipe I2 using a cap nut 43 in a watertight state.

In addition, as shown in FIG.
and a through hole 53 for a pump-up type drain plug scraping rod provided in the upper regulation ring 45. Upper seal ring 44. Water spout fitting installation opening 42. Kikuzakin 47. It extends downward through the arcuate cutout space 56 of the lower mounting washer 48, and its extended end is interlocked and connected to a pop-up drain plug (not shown).

To explain other configurations in the illustrated embodiment, in FIG. A water stop valve 61 is provided to facilitate maintenance in the event that there is a problem with the TLuff on-off valve 14.

Further, as shown in FIGS. 4 and 5, in this embodiment, the Ti source device 17 is constituted by a dry battery 17a detachably mounted in a dry battery case 17a. By supplying low voltage power from the dry cell battery 11a to the electromagnetic on-off valve 14 and hand sensor 24, accidents such as electric shock can be effectively prevented.

Next, the operation of the automatic faucet A having the above configuration will be explained.

As described above, by attaching the dry battery 17a to the dry battery case 17b, low voltage power is supplied to the electromagnetic on-off valve 14 and the non-sensing sensor 24, and the automatic water faucet A is brought into the initial state.

After using the toilet, etc., when the user extends his hand below the water spout 7/pu 30a located at the tip of the automatic faucet A, the non-sensing sensor 24 outputs an ON output, and based on the ON output, The control device 16 sends a drive signal to the electromagnetic on-off valve 14, drives the electromagnetic on-off valve 14, and as shown in FIG.
4c and separate the valve body 14a from the valve seat 14b to open the valve.

As a result, the thermostatic mixing valve 14
The mixed hot water at the ai temperature adjusted by
The product is discharged more easily and can be used to wash hands.

When the user withdraws his or her hand after washing, the non-sensing sensor 24 no longer detects the hand, so an off output is sent to the control device IG, and based on the off output, the illumination device 1G controls the electromagnetic on-off valve 14. The plunger +4c of is advanced, and the valve body 14a is
are brought into contact with each other from the valve seat 14b to close the valve.

In addition, in the above operation, when the electromagnetic on-off valve 14 is driven by a lasoching solenoid, once the electromagnetic on-off valve 14 is driven to open or close, the valve can be opened or closed even if no power is supplied. It is possible to self-maintain the valve closed state, and it is possible to save power.

Roughly speaking, in this embodiment, the water spouting fitting 11 is constructed by detachably attaching a sensor protection cover 22 independent from the fitting main body 21 having a water spouting channel 20 formed therein. , the installation work of the non-sensing sensor 24 and the wiring work of the sensor cord 37 and the like to the quantum sensing sensor 24 can be performed extremely easily.

Therefore, the efficiency of the installation work and wiring work of the non-sensing sensor 24, sensor cord 37, etc. can be improved, the manufacturing cost of automatic faucet A can be significantly reduced, and the non-sensing sensor 24 can be prevented from malfunctioning. or sensor code 3
Maintenance can be done easily in case 7 is disconnected.

(g) Effects As explained above, in the present invention, when the lower mounting washer is attached to the water discharge flow path connection pipe, a washer guiding guide bin extending downward from the base of the water discharging fitting is provided on the lower mounting washer. Since the lower mounting washer can be inserted through the bottle insertion hole, the lower mounting washer will not be moved by the subsequent rotation of the tightening nut. It is possible to reliably prevent the lower mounting washer from being caught between the upper surface and the sensor cord, and to reliably prevent the sensor cord from breaking.

In addition, the cutout space provided in the lower mounting washer can be positioned in a certain direction so that the sensor cord can be easily pulled out.
The sensor cord can be prevented from being twisted, and the sensor cord can be easily pulled out.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the inside of a toilet having a large number of washbasins equipped with an automatic faucet according to the present invention, Fig. 2 is a perspective view of the washbasin, and Fig. 3 is a cross section showing the overall configuration of the automatic faucet. 4 is a cross-sectional side view of the valve control box taken along the line 1-1 in FIG. 3; FIG. 5 is a cross-sectional plan view of the valve control box taken along the line ■-■ in FIG. 3; and FIG. - Figure 8 is a cross-sectional view of the water spouting fitting taken from the third drawing - line ■, IV-IV line, and v-v line; The figures are a cross-sectional view of the hand detection sensor taken along lines ■ to ■ in Figure 9, Figure 11 is an exploded perspective view of the fixing structure of the water spouting metal fitting, and Figures 12 to 14 are cross-sectional explanatory views of the fixing structure of the water spouting metal fitting. be. In the figure, A: automatic faucet B: washbasin C: cabinet D: wall S: sensor installation space 11: water discharge fitting 20: water discharge flow path 21: metal fitting body 22; sensor protection cover 37: sensor code 41: Water discharge flow path connection pipe 42; Water discharge fitting mounting opening 48: Lower mounting washer 51; Guide pin for guiding the washer 55: Pin insertion hole 56: Arc-shaped space FIG.

Claims (1)

[Claims] 1. A water spout flow path connecting pipe (41) whose upper end is connected to the lower part of the water spout fitting (11) extends downward through a water spout fitting mounting opening (42) provided on the water spout fitting mounting plate, and the water spout flow The lower mounting washer (48) and the tightening nut (4
9), screw the same tightening nut (49) onto the male threaded part (58) provided on the lower extension part of the water outlet flow path connection pipe (41), and attach the lower mounting washer (48) to the water outlet fitting mounting plate. The lower mounting washer (48) is crimped to the lower surface, and the lower mounting washer (48) is formed into a substantially horseshoe shape, and a cutout space (56) is formed at the outer periphery of the lower mounting washer (48). A sensor cord (37) etc. connected to the attached hand detection sensor (24) etc. can be inserted through it, and a washer guiding guide pin (51) extending downward is provided at the bottom of the water discharging fitting (11). Attach the same guide pin (51) to the lower mounting washer (48)
A water spout fitting fixing structure for an automatic faucet, characterized in that a pin insertion hole (55) is provided for insertion of the water spout.