JP2005344499A - Hose storage type faucet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a power is consumed in a large quantity because a power is supplied by an electromagnetic induction by using a feeding coil on the extractable water-spouting head side while a body sensor conducts a sensing operation for a prolonged term under the state in which a water-spouting head is extracted in a hose storage type automatic faucet. <P>SOLUTION: In the hose storage type automatic faucet in which the water-spouting head 12 can be extracted together with a hose 18, the faucet oppositely has a primary coil 44 on the feed side and a secondary coil 46 on the receiving side. In the faucet, the feeding coil 40 supplying the secondary coil 46 with the power from the primary coil 44 by the electromagnetic induction is mounted on the joining section of the water-spouting head 12 and a water-spouting section body 14. In the faucet, a feed detecting section detecting the presence of a power supply from the water-spouting section body 14 side to the water-spouting head 12 side on the basis of the presence of an induced current is installed previously. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hose-accommodating faucet in which a water discharge head can be pulled out from its holding body together with a flexible hose, and more particularly to a device equipped with a power supply means for the water discharge head.

Conventionally, a human body sensor (operation sensing unit) has been provided near the water outlet of the water discharge head, and when a hand is inserted below the water outlet, the human body sensor detects this and automatically discharges water from the water outlet. Automatic faucets are widely used mainly as hand-washing faucets.
In recent years, it has been considered to apply this automatic faucet as a kitchen faucet.
By the way, as a kitchen faucet or a faucet faucet, in recent years, a hose storage type faucet that can be pulled out together with a flexible water hose connected to the water discharge head and housed in its holding body has been preferred. It has come to be used.

In this kind of hose storage type faucet, by pulling out the water discharge head together with the hose, it is possible to discharge water from the water discharge port of the water discharge head at any position when cleaning and washing the sink, collecting water in a tall container, Convenience is high.
Accordingly, even when the above automatic faucet is applied as a kitchen faucet, a toilet faucet, etc., it is desired to configure such an automatic faucet as such a hose-accommodating faucet.

  By the way, in the automatic faucet as described above, it is necessary to supply electric power to the human body sensor provided in the water discharge head. Therefore, when such an automatic faucet is configured as a hose storage type faucet, At the same time, there is a problem with the means for supplying power to the human body sensor of the movable water discharge head that can be pulled out from the holding body.

As one means, it is conceivable to provide a terminal for power supply. In this case, the terminal is provided in a place where water is applied, and there is a problem that the terminal may be corroded or the terminal may be short-circuited by water.
On the other hand, it is conceivable to pass the electric wire cord through the hose. In this case, however, the durability of the electric wire is a problem, and if the electric wire cord is passed through the hose in this way, the hose inevitably becomes thicker. .
On the other hand, it is conceivable that a battery is mounted on the water discharge head. In this case, however, the water discharge head is inevitably bulky, and the water discharge head is required to be compact. The problem of troublesome work arises.

Therefore, the primary coil on the power feeding side and the secondary coil on the power receiving side that are electromagnetically coupled are opposed to each other, and the primary coil holds the power feeding coil that feeds power from the primary coil to the secondary coil by electromagnetic induction. In addition, it is conceivable that the secondary coils are provided on the water discharge head side.
If it does in this way, electric power can be supplied without trouble from the holding body side in a fixed state to the movable water discharge head side while solving the above-mentioned problems.
Conventionally, for example, the following Patent Document 1 discloses power supply using such a power supply coil.

In this Patent Document 1, power is supplied from a shower hook side to a movable shower head side using a feeding coil, and on the shower head side, the ultrasonic wave generating means is operated by the supplied power, The point which made it propagate an ultrasonic wave to the hot water spouted from a shower head is disclosed.
However, in this case, if the water discharge head is pulled out from the holding main body together with the water supply hose, the power supply from the holding main body side to the water discharge head side by the power supply coil stops. If the sensor continues to perform the sensing operation, a large amount of electric energy of power storage means such as a storage battery provided on the water discharge head side is consumed and consumed.

  Therefore, in such a power feeding system using a power feeding coil, it is desirable to stop the sensing operation by the human body sensor immediately or after a set time has elapsed when the water discharge head is pulled out from the holding body. When the water discharge head is pulled out from the holding body, it is necessary to be able to detect this.

In the automatic faucet, as a means to detect when the water discharge head is pulled out from its holding body, a reed switch is provided on the water discharge head side and a magnet is provided on the holding body side so that the water discharge head is pulled out. Japanese Patent Application Laid-Open Publication No. 2004-259542 discloses that this is detected by such a reed switch.
However, in this case, there arises a problem that extra parts such as a reed switch and a magnet are required for detecting the withdrawal of the water discharge head.

  Although the problems regarding the automatic faucet have been described above, for example, in the case of a hose retractable faucet other than the automatic faucet, the same applies to a hose retractable faucet provided with an electrical indicator on the water discharge head and other electrical loads. Problem arises.

JP 2003-174978 A JP-A-5-171665

  The present invention is based on the circumstances as described above, and in the hose-accommodating faucet, power is supplied from the holding main body side to the water discharge head side using the power supply coil, and particularly when the water discharge head is pulled out. It was made for the purpose of providing a device that can detect this without adding any parts and can suppress the power consumption of the secondary power supply on the water discharge head side by a human body sensor or the like. It is.

  Thus, according to the first aspect of the present invention, there is provided a water hose storage faucet in which the water discharge head can be pulled out together with the water supply hose connected to the water discharge head and housed in the holding body of the water discharge head. A primary coil on the power feeding side and a secondary coil on the power receiving side facing each other are opposed to each other, and the primary coil holds the power feeding coil that feeds power from the primary coil to the secondary coil by electromagnetic induction. A power supply for detecting the presence or absence of power supply by the power supply coil from the holding main body side to the water discharge head side based on the presence or absence of an induced current, provided on the main body side in a state where the secondary coils are respectively positioned on the water discharge head side A detection means is provided.

  According to a second aspect of the present invention, in the first aspect, the faucet is an automatic faucet provided with a human body sensor on the water discharge head, and the feeding coil supplies power for sensing of the human body sensor. In addition, the sensing by the human body sensor is stopped immediately or after a set time has elapsed when the power feeding detecting means detects the power feeding stop.

  According to a third aspect of the present invention, the human body sensor according to the second aspect causes the human body sensor to discharge water by human body detection and to stop water by non-human body detection, and the water discharge head has continuous water discharge and water stoppage. A continuous water discharge switch is further provided, and the continuous water discharge switch is continuously operated upon detection of the power supply stop, while the sensing by the human body sensor is stopped.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the power supply detection means is provided in a main body function part of a water faucet on the primary side with respect to the water discharge head on the secondary side. When the means detects the power supply stop, the control unit of the main body function unit opens the valve for performing water discharge and water stop immediately or after a set time, and starts water discharge. To do.

Effects and effects of the invention

As described above, according to the present invention, power is supplied from the holding main body side to the water discharge head side by the power supply coil, and the presence / absence of power supply from the holding main body side to the water discharge head side is detected based on the presence / absence of an induced current. A power supply detection means is provided.
In the present invention, the power supply coil itself forms a part of the means for detecting the discharge of the water discharge head from the holding body. Therefore, according to the present invention, special components such as the reed switch and the magnet are separately provided. Without providing it, it becomes possible to detect the withdrawal of the water discharge head.

According to the present invention, by detecting the withdrawal of the water discharge head, for example, the operation of the load provided on the side of the water discharge head can be stopped immediately after the water discharge head is drawn or after a set time has elapsed, thereby The electric energy consumption of the storage means such as a storage battery provided on the side can be suppressed, and the storage means can be made smaller, so that the water discharge head can be made compact and the faucet design and appearance can be maintained well. It becomes.
Alternatively, since the electric energy consumption of the power storage means can be reduced, the usage time of the power storage means can be lengthened.

  According to a second aspect of the present invention, the faucet is configured as an automatic faucet provided with a human body sensor on the water discharge head, and the power supply coil feeds power from the holding body side to the water discharge head side. When the power supply stop is detected, that is, when the water discharge head is pulled out, or immediately after the set time has elapsed, the sensing by the human body detection sensor is stopped. Even when configured as an automatic faucet equipped with a human body detection sensor, it is possible to solve the problem that a large amount of electrical energy is consumed when the human body detection sensor continues the sensing operation for a long time after the water discharge head is pulled out.

  In the third aspect, the hose storage faucet is configured as an automatic faucet in the same manner as described above, and a continuous water discharge switch for continuous water discharge and water stop is provided on the water discharge head side in addition to the human body sensor. And while the sensing by the human body sensor is stopped by detecting the stoppage of power supply, the continuous water discharge switch is made to continue to work. With this hand operation, water can be discharged from the water outlet and stopped, and the automatic faucet can be used with high convenience.

Next, according to a fourth aspect of the present invention, the power supply detection means is provided in the main body function part of the primary water faucet with respect to the secondary side water discharge head, and the main body function part is controlled when the power supply detection means detects the power supply stop. A valve such as an electromagnetic valve is opened under the control of the unit, and water discharge is started from the water discharge port.
The fact that the water discharge head is pulled out is when the user intends to use the faucet. In this case, the user simply pulls out the water discharge head and does not need to perform a separate operation for starting water discharge. In addition, water can be discharged from the water outlet, and the faucet is easy to use.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a hose storage type automatic faucet (hereinafter simply referred to as “automatic faucet”) that is suitable mainly as a faucet for hand-washing or lavatory, 12 is a movable water discharge head, and 14 is standing and fixed on a counter 16. In the present example, the water discharger body in the automatic faucet 10 is constituted by the water discharger head 12 and the water discharger main body 14.
One end of a water supply flexible hose 18 is connected to the water discharge head 12, and the water discharge head 12 is housed in the water discharge section main body 14 while the water discharge head 12 is held by the water discharge section main body 14. Strictly speaking, the hose 18 in a state where a part on the side of the water discharge head 12 is accommodated in the water discharge unit main body 14 is drawn out from the water discharge unit main body 14 together with the water discharge head 12.

The movable water discharge head 12 includes a water discharge port 20 for discharging water sent through the hose 18 to the outside, a sensor window 22 at a position near the water discharge port 20, and a sensor window 22 inside the sensor window 22 as shown in FIG. As shown, an infrared human body sensor 24 is provided.
Here, the human body sensor 24 emits infrared light to the front of the spout 20 through the lens 25 and the sensor window 22, receives light reflected from the human body such as a hand, and senses the human body based on reception of the reflected light. .
In the automatic water faucet 10 of this example, automatic water discharge is performed from the water discharge port 20 only while the human body detection sensor 24 is detecting the human body such as the hand that is being pushed out, and the human body detection sensor 24 is insensitive to the human body. By the way, water discharge from the water discharge port 20 is automatically stopped, that is, stopped.

On the other hand, a continuous water discharge switch 26 is provided on the top surface of the water discharge head 12.
In this embodiment, when the continuous water discharge switch 26 is pressed once, water is continuously discharged from the water discharge port 20, and when this is pressed again, water discharge from the water discharge port 20 stops there. That is, each time the continuous water discharge switch 26 is pressed once, water discharge and water stop from the water discharge port 20 are performed.
As shown in FIG. 2, the continuous water discharge switch 26 includes a switch main body 28 and a flexible portion 30 covering the switch main body 28.

  The water discharge head 12 is provided with a light emitting unit 64 as a transmission unit for transmitting signals from the human body sensor 24 and the continuous water discharge switch 26 to the water discharge unit main body 14 side, specifically, a main body side control unit 52 described later. The light emitting unit 64 is connected to a head side control unit 38, which will be described later, through a signal line 68B.

The water discharge head 12 is provided with a secondary power supply unit 36 together with the head side control unit 38, and this is used as a power source for sensing by the human body sensor 24, operation detection signals from the human body sensor 24 and the continuous water discharge switch 26. Transmission, operation of the head side control unit 38, and the like are performed.
The secondary power supply unit 36 is provided with storage means such as a storage battery and a capacitor, a constant voltage circuit, and the like.
Further, the secondary power supply unit 36 and the head side control unit 38 are stored in the circuit storage unit 35.

  Here, the head-side control unit 38 receives signals from the human body sensor 24, the continuous water discharge switch 26, and a power supply detection unit 62 described later, and causes the light-emitting unit 64 to transmit a signal by light emission, and also operates the human body sensor 24. The infrared light is intermittently emitted in a pulse form from the light emitting unit 64 of the human body sensor 24, and the interval and the pulse width of the pulse emission are controlled.

  In FIG. 2, 66 is a light receiving unit as a receiving unit that receives a light emission signal from the light emitting unit 64. This light receiving unit 66 is connected to the main body side control unit 52 of FIG. The data is transmitted to the main body side control unit 52.

  As shown in FIG. 1, the hose 18 is connected to a water supply source pipe via a solenoid valve 32 and a stop cock 34 on the lower side of the counter 16, and water from the water supply source pipe is connected to these stop cocks. 34, it guide | induces to the hose 18 via the solenoid valve 32, and also water is discharged | emitted from the spout 20 of the spout head 12 to which the one end was connected to the exterior.

Reference numeral 37 denotes a control box, which is provided with a main body side control unit 52 and a primary power supply unit 54 (see FIG. 3).
The primary power supply unit 54 is connected to an external power supply, and the electromagnetic valve 32 is electrically connected to the main body side control unit 52.
The solenoid valve 32 is controlled to open and close under the control of the main body side control unit 52.
In the present embodiment, the water discharger main body 14, the electromagnetic valve 32, the control box 37, etc. constitute a primary-side main body functional unit with respect to the secondary-side water discharge head 12.

  The signal line 68A is also connected to the main body side control unit 52 as described above, and signals from the human body sensor 24 on the water discharge head 12 side, the continuous water discharge switch 26, etc. are input to the main body side control unit 52. Is done.

  In the present embodiment, when the human body detection sensor 24 senses a human body, the main body side control unit 52 opens the electromagnetic valve 32 by receiving the signal (operation detection signal) and causes the water discharge port 20 to discharge water, and the human body detection sensor. When 24 detects no human body, the main body side control unit 52 closes the electromagnetic valve 32 in response to a signal from this, and stops water discharge from the water discharge port 20.

Further, when the continuous water discharge switch 26 is pushed, an ON signal (operation sensing signal) is sent to the main body side control unit 52, and the main body side control unit 52 opens the electromagnetic valve 32, and from the water discharge port 20. Let the water discharge continuously.
Next, when the continuous water discharge switch 26 is pressed and an off signal is sent to the main body side control unit 52, the main body side control unit 52 receives the signal and causes the electromagnetic valve 32 to perform a closing operation. Stop water discharge from.

In FIG. 1, a fitting protrusion 48 is provided on the top surface of the water discharger main body 14.
On the other hand, as shown in FIGS. 2 and 4, the water discharge head 12 is provided with a corresponding fitting recess 50, and the water discharge head 12 is in a state in which the fitting protrusion 48 and the fitting recess 50 are fitted. Is set on the water discharger main body 14. That is, it is held at a holding position by the water discharger main body 14.

As shown in FIG. 2, when the water discharge head 12 is held by the water discharge section main body 14, a power feeding coil (electromagnetic coupler) 40 is provided at the joint between the water discharge head 12 and the water discharge section main body 14.
This power supply coil 40 has a power supply side primary coil 44 facing each other in the axial direction of the water passage, more specifically in the axial direction of the hose 18, and a power reception side secondary coil 46 electromagnetically coupled thereto. doing.

Here, the primary coil 44 is provided on the water discharger body 14 side, and the secondary coil 46 is provided on the water discharge head 12 side, and the primary coil 44 and the secondary coil 46 surround the hose 18, that is, It is arranged in a state surrounding the water passage.
Here, the primary coil 44 is connected to the primary power supply unit 54 of FIG. 3 through the power supply line 42A, and the secondary coil 46 is connected to the secondary power supply unit 36 through the power supply line 42B.

The power supply line 42A on the water discharger body 14 side and the power supply line 42B on the water discharge head 12 side are electromagnetically coupled by the power supply coil 40 as shown in FIG. Is supplied with power from the power supply line 42A to the power supply line 42B by electromagnetic induction between the primary coil 44 and the secondary coil 46, and further supplied with power to the secondary power supply unit 36 on the water discharge head 12 side through the power supply line 42B. Thus, the electric power supplied to the power storage means provided therein is stored.
In the power supply coil 40, the power supply from the primary coil 44 to the secondary coil 46 is specifically performed as follows.

That is, by switching the switching transistor 60 at a high frequency under the control of the main body side control unit 52 in FIG. 3, when an electric current is passed through the primary coil 44 at a high frequency, an induced current is generated in the secondary coil 46 by electromagnetic induction. As a result, electric power is supplied to the secondary power source 36.
In FIG. 3, 56 is a resonance capacitor, 58 is a tuning capacitor, and 59 is a rectifier diode.

In the present embodiment, a power supply detection unit (power supply detection means) 62 that detects the presence or absence of power supply by detecting the presence or absence of an induced current on the water discharge head 12 side is provided.
And when the power supply from the primary coil 44 by the electromagnetic induction to the secondary coil 46 is stopped by the power supply detection unit 62, specifically, when the water discharge head 12 is pulled out from the water discharge unit main body 14 and separated, This is detected.
As a result, the head-side control unit 38 continues to maintain the continuous water discharge switch 26 in an operating state, while stopping the sensing operation by the human body sensor 24 immediately or after a predetermined set time, and stopping the power consumption by the human body sensor 24. .

This is because when the water discharge head 12 is pulled out from the water discharge section main body 14 together with the hose 18, the water discharge is performed based on the operation by the continuous water discharge switch 26 rather than by the human body detection sensor 24. This is because water is often stopped.
However, it is also possible to perform water discharge and water stop based on sensing and non-sensing by the human body sensor 24 as necessary. In such a case, after the water discharge head 12 is pulled out, only for a set time. It is good to make this perform a sensing operation.

In the automatic faucet 10 according to the present embodiment, the spout 20 is provided by pushing out the hand in front of the sensor window 22, that is, in front of the human body sensor 24, with the water discharge head 12 held by the water discharge body 14. Can be automatically discharged.
Further, water can be automatically stopped by pulling out the hand from the front of the human body sensor 24.
On the other hand, by operating the continuous water discharge switch 26 in a state where the water discharge head 12 is pulled out from the water discharge portion main body 14 together with the hose 18, continuous water discharge and water stop can be performed from the water discharge port 20 brought to an arbitrary position.

As described above, in the present embodiment, the power supply coil 40 itself is used as part of the means for detecting the withdrawal of the water discharge head 12 from the water discharge section main body 14. Therefore, according to the present embodiment, the lead It is possible to detect the withdrawal of the water discharge head 12 without separately providing special parts such as a switch and a magnet.
According to the present embodiment, by detecting the withdrawal of the water discharge head 12, the sensing operation of the human body sensor 24 provided on the water discharge head 12 side is stopped immediately after the water discharge head 12 is drawn or after a set time has elapsed. Accordingly, it is possible to suppress the consumption of electric energy of the storage battery or the like on the water discharge head 12 side, and it is possible to reduce the secondary power source unit 36 including the storage battery or the like.
Thereby, the water discharge head 12 can be made compact, and the design and appearance of the faucet can be maintained well.
Or since electric energy consumption can be restrained little, it becomes possible to lengthen use time, such as a storage battery.

  Further, in the present embodiment, in addition to the human body sensor 24, a continuous water discharge switch 26 for continuous water discharge and water stop is provided on the water discharge head 12 side, and sensing by the human body sensor 24 is stopped by detecting power supply stop, Since the continuous water discharge switch 26 is continuously operated, even after the water discharge head 12 is pulled out, the water discharge from the water discharge port 20 and the water stop can be performed by the hand operation of the continuous water discharge switch 26. The automatic faucet 10 can be used with high convenience.

5 to 7 show other embodiments of the present invention.
In FIG. 5, 10 is a single-lever type automatic faucet for kitchen, 70 is a sink, 72 is a faucet body provided in a standing state on a counter 71 of a sink, and a lever operation part 74 is vertically moved above it. And it is provided so that rotation to the right and left is possible.
From the faucet body 72, a water discharge pipe body 76 corresponding to the water discharge section main body 14 of FIG. 1 extends obliquely upward toward the sink 70 side.

As shown in FIG. 6, a sensor window 22 is provided on the top surface of the water discharge head 12 movable between the holding position by the water discharge pipe main body 76 and the drawing position, and the light emitting section 78 is provided inside. And an infrared human body sensor 82 having a light receiving unit 80.
In this embodiment, the water discharge pipe main body 76 or the water discharge pipe main body 76 and the water faucet main body 72 form a holding main body of the water discharge head 12.
Further, the water discharge pipe main body 76, the faucet main body 72, the electromagnetic valve 32, the control box 37 and the like constitute a main body function unit which is the primary side of the faucet.

Here, the human body sensor 82 emits infrared rays from the light emitting unit 78 to the outside from the top surface of the water discharge head 12 through the sensor window 22, and receives light reflected by the human body by the light receiving unit 80 to detect the presence or absence of the human body.
However, in this embodiment, the human body is sensed only when a human finger or the like is at a close distance.
That is, in this embodiment, the human body detection sensor 82 senses a human body without contact, but is configured as a so-called touch switch.

Further, in this embodiment, the human body sensor 82 does not perform water detection only when a human body is sensed, specifically when a human finger is sensed, and does not stop water when it is not sensed. When the human body is not sensed after the detection of water, water is continuously discharged from the water outlet 20, and then when the human body is detected again when the finger is put out, water is discharged from the water outlet 20 for the first time. It is comprised as a sensor for stopping.
That is, it has the same function as the continuous water discharge switch 26 in the above embodiment.

In this embodiment, as shown in FIG. 6, an infrared light emitting unit 64 as a transmission unit that transmits an operation sensing signal from the human body sensor 82 faces a light emitting window 81 on the front surface of the water discharge head 12. The signal is transmitted from the light emitting unit 64 to the outside through the window unit 81.
On the other hand, as shown in FIG. 5, a light receiving window 83 is provided on the lower surface of the proximal end of the water discharge pipe body 76, and an infrared light receiving part 66 as a receiving part (see FIG. 7). Is provided.
In this embodiment, the light emission signal from the light emitting unit 64 is received by the light receiving unit 66 and sent to the main body side control unit 52, and based on this, the opening / closing control of the electromagnetic valve 32 of FIG. 7 is performed.

In FIG. 7, 84 and 86 are water and hot water supply paths, respectively. Water and hot water supplied through these supply paths 84 and 86 are mixed by the mixing valve 87 inside the faucet body 72.
Then, the mixed water that has passed through the mixing valve 87 is guided to the water discharge head 12 through the outflow path 88.
Here, most of the portion of the outflow path 88 extending from the faucet body 72 is formed by the flexible hose 18 described above.
An electromagnetic valve 32 is provided on the outflow path 88, and the outflow of mixed water through the outflow path 88, that is, water discharge from the water discharge port 20 and water stoppage are controlled by the electromagnetic valve 32.
In the automatic water faucet 10, the mixing valve 87 is operated by the left / right and up / down turning operation of the lever operation unit 74, and the mixing ratio of water and hot water and the flow rate of the whole discharged water are adjusted.

In this embodiment, when the water discharge head 12 is held by the water discharge pipe main body 76 and the finger is inserted above the human body detection sensor 82, the human body detection sensor 82 detects this.
Based on the detection by the human body sensor 82, a signal is emitted from the light emitting unit 64 as a light emission signal, which is received by the light receiving unit 66 and sent to the main body side control unit 52.
In response to this, the main body side control unit 52 opens the electromagnetic valve 32 to discharge the mixed water from the water outlet 20.

The human body sensor 82 according to the present embodiment is configured for a continuous water discharge switch as described above, and therefore water discharge from the water discharge port 20 is continued even when the finger that has been pulled out thereafter is separated.
When the finger is again inserted above the human body sensor 82, water discharge from the water outlet 20 is stopped based on human body detection by the human body sensor 82.
That is, based on the signal from the human body sensor 82 at that time, the main body side control unit 52 closes the electromagnetic valve 32 and stops water discharge from the water discharge port 20.

Also in this embodiment, when the water discharge head 12 is pulled out from the water discharge pipe main body 76, the pull-out is detected by the power supply detection unit.
At this time, the sensing by the human body sensor 82 may be stopped (in this case, the water discharge head 12 is held in the water discharge pipe main body 76 in advance, and the water discharge head 12 is pulled out in that state. However, in this embodiment, after the water discharge head 12 is pulled out, the sensing by the human body sensor 82 may be stopped after a set time.
If it does in this way, the continuous water discharge and water stop from the water discharge port 20 can be performed by operation of the continuous water discharge switch which consists of the human body sensor 82 in the state which pulled out the water discharge head 12 within setting time.

  The time during which the water discharge head 12 is pulled out and used is shorter than the time when the water discharge pipe main body 76 holds the water discharge head 12, and therefore the set time is determined based on the time expected in advance. Thus, the continuous water discharge switch can be operated under the state where the water discharge head 12 is pulled out.

On the other hand, in the case where the water discharge head 12 is left with being pulled out, the power consumption by the human body sensor 82 is increased due to the longer time.
In this case, it is possible to prevent a great amount of power consumption by automatically stopping sensing by the human body sensor 82 upon expiration of the set time.

In the embodiment shown in FIGS. 1 to 4, the power supply detection means is provided in the water discharge head 12 on the secondary side, but the power supply detection means is provided in the main body function unit of the water faucet on the primary side. It can also be left.
FIG. 8 shows an example.
When the water discharge head 12 is pulled out, the power supply coil 40 stops supplying power (cannot supply power).
In order to detect this, in this embodiment, a resistor 90 is connected in series to the switching transistor 60.

Since the voltage between both ends of the resistor 90 decreases when power supply is stopped, a power consumption detection circuit 92 that detects power consumption on the water discharge head 12 side is provided based on the voltage decrease, and the resistor 90 The voltage between both ends is amplified and converted into a digital signal and input to the main body side control unit 52.
That is, in this embodiment, the withdrawal of the water discharge head 12 is detected by the resistor 90 and the power consumption detection circuit 92, and the result is input to the main body side control unit 52. In response to this, the main body side control unit 52 performs necessary operation control.
In the present embodiment, the resistor 90 and the power consumption detection circuit 92 constitute power supply detection means for detecting the presence or absence of power supply to the water discharge head 12 side.

For example, in the case of the present embodiment, when the water discharge head 12 is pulled out and the power supply detection means detects the power supply stop, the control of the electromagnetic valve 32 by the main body side control unit 52, that is, the electromagnetic valve 32 is opened. The water discharge can be started automatically from the water discharge port 20 immediately or after a set time delay.
In this case, the user can simply draw out the water discharge head 12 to discharge water from the water discharge port 20 without performing a special operation for starting water discharge, and the faucet is easy to use.

In this embodiment, an LED 94 that is turned on and consumes power when the human body sensor 24 senses a human body is also provided as a power consuming circuit on the water discharge head 12 side, and the LED 94 is connected to the head side control unit 38. Has been.
The head-side control unit 38 turns on the LED 94 when the human body detection sensor 24 senses a human body, and turns off the LED 94 when the human body detection sensor 24 becomes undetected.

The LED 94 as the power consuming circuit has the following meaning.
That is, when the human body sensor 24 senses a human body, power consumption increases on the water discharge head 12 side. As a result, the power supply coil 40 increases the amount of power supplied, and the current I flowing through the resistor 90 increases.
Therefore, the voltage across the resistor 90 increases, and the increased voltage is amplified by the power consumption detection circuit 92 and converted into a digital signal, which is then input to the main body side control unit 52.

That is, the presence / absence of human body sensing by the human body sensor 24 is detected by the resistor 90 and the power consumption detection circuit 92, and the main body side controller 52 controls the opening / closing of the electromagnetic valve 32 in response to the detection.
That is, in this embodiment, the resistor 90 and the power consumption detection circuit 92 constitute power supply detection means, and also constitute detection means for detecting the presence or absence of human body sensing by the human body sensor 24.
Therefore, in this embodiment, it is possible to omit the communication means for transmitting the detection signal from the human body detection sensor 24 to the main body side control unit 52.

In this embodiment, an LED 94 is added to the water discharge head 12 side to increase the power consumption when the human body sensor 24 senses a human body. The power consumption by the human body sensor 24 itself may be increased by shortening the interval between infrared light emission pulses from the light emitting unit 64 or widening the pulse width when detected.
Even in this case, it is possible to detect the presence or absence of human body detection by the primary side resistor 90 and the power consumption detection circuit 92.
In this case, the LED 94 as a power consumption circuit can be omitted.

  Although the embodiments of the present invention have been described in detail above, these are merely examples, and the present invention can be applied to faucets for various uses, and various modifications are made without departing from the spirit thereof. Can be configured.

It is a figure which shows the hose accommodation type automatic faucet which is one Embodiment of this invention. It is a figure which expands and shows the principal part of the embodiment. The circuit configuration in the same embodiment is shown as a block diagram. It is operation | movement explanatory drawing of the embodiment. It is a figure which shows other embodiment of this invention. It is a principal part enlarged view of the embodiment. It is the schematic which shows the path | route of the water in the same embodiment, hot water, and mixed water. It is a figure which shows the circuit structure in other embodiment of this invention as a block diagram.

Explanation of symbols

10 Hose storage type automatic faucet 12 Water discharge head 14 Water discharge part main body (main body)
18 Hose 24, 82 Human body sensor 26 Continuous water discharge switch 40 Power supply coil 44 Primary coil 46 Secondary coil 62 Power supply detection unit (power supply detection means)
72 Water faucet body 76 Water discharge pipe body (main body)
90 Resistance (feed detection means)
92 Power consumption detection circuit (power supply detection means)

Claims (4)

In the hose storage type faucet that can be pulled out together with the water supply hose connected to the water discharge head and stored in the holding body of the water discharge head,
An electromagnetically coupled primary coil on the power feeding side and a secondary coil on the power receiving side are opposed to each other, and the primary coil includes a power feeding coil that feeds power from the primary coil to the secondary coil by electromagnetic induction. Provided on the holding main body side in a state where the secondary coils are respectively located on the water discharge head side, and detects the presence or absence of power supply by the power supply coil from the holding main body side to the water discharge head side based on the presence or absence of an induced current A hose-housing faucet characterized by providing a power supply detecting means.   2. The automatic faucet according to claim 1, wherein the faucet is an automatic faucet provided with a human body detection sensor on the water discharge head, and the power supply coil supplies power for sensing of the human body detection sensor. A hose-retaining water faucet characterized in that sensing by the human body sensor is stopped immediately or after a set time has elapsed when the detection means detects a power supply stop.   3. The water discharge sensor according to claim 2, wherein the human body sensor causes water discharge by human body detection and water stop by non-human body detection, and the water discharge head further includes a continuous water discharge switch for continuous water discharge and water stop. A hose-retaining water faucet, comprising: the continuous water discharge switch is continuously operated by detecting the power supply stop, and the sensing by the human body sensor is stopped.   The power supply detection means according to any one of claims 1 to 3, wherein the power supply detection means is provided in a main body function part of a water faucet on the primary side with respect to the water discharge head on the secondary side, and the power supply detection means detects a power supply stop. In some cases, the control unit of the main body function unit opens a valve for discharging and stopping water immediately or after a set time delay to start discharging water.

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