JP5088728B2 - Water faucet - Google Patents

Description

  The present invention relates to a water faucet, and more particularly, to a faucet provided with a non-contact type changeover switch and a contact operation unit at the tip of a water discharge pipe.

As a faucet provided with an operation part at the tip of the water discharge pipe, one disclosed in the following Patent Document 1 is conventionally known.
In this faucet, a non-contact type changeover switch for switching between water and hot water, switching between raw water and purified water as tap water, or switching between water discharge and water stoppage is provided at the tip of the water discharge pipe. In addition, there is a single lever type hot water mixing section at the root of the water discharge pipe. When the changeover switch at the tip of the water discharge pipe is operated in a non-contact manner (hand-holding operation), the water discharge is switched. By operating the single lever at the base, the temperature and flow rate of the water discharge are adjusted.

  The faucet disclosed in Patent Document 1 can perform water discharge switching without contact, and can perform water discharge state adjustment such as water discharge flow rate and temperature adjustment by operating a single lever at the root. It is highly convenient.

  However, in the case of the faucet disclosed in Patent Document 1, although the water discharge switching can be performed in a non-contact manner at the tip of the water discharge pipe, the water discharge state adjustment such as the flow rate adjustment and the temperature adjustment of the water discharge There is a problem that it is necessary to extend the hand to the single lever at the root part, and there is a bulky single lever mixing part at the base part of the water discharge pipe, so that the water discharge pipe or faucet is enlarged in appearance. In addition, there is a problem that the single lever mixing portion at the base portion of the water discharge pipe is easily contaminated with scale.

  In addition, the following patent document 2 as another patent document discloses a faucet provided with a water stop operation unit for switching water discharge at the tip of the shower head and a flow control operation unit for adjusting the water discharge flow rate. Has been.

  However, the one disclosed in Patent Document 2 is a contact-type and manual-type operation unit that is operated by touching the user directly with a hand, and is sufficient in terms of convenience. In addition, there is a problem that the same portion is easily soiled with the contact with the water discharge operation portion.

  Further, as another patent document, the following Patent Document 3 discloses a device in which a rotary dial operation unit is provided at the tip of the water discharge pipe, and the water discharge flow rate is adjusted by the rotation operation of the dial operation unit. Yes.

  However, in the thing disclosed in this patent document 3, the operation part for water discharge switching, such as water discharge switching, is a contact type and a manual type, and has the same problem as that disclosed in patent document 1. .

Therefore, it is conceivable to provide both a non-contact type changeover switch for performing water discharge switching based on the presence or absence of human body detection and a contact operation unit for performing water discharge state adjustment at the tip of the water discharge pipe.
In this way, the operation of switching the water discharge can be operated at the tip of the water discharge pipe, i.e., close to the user in a non-contact manner, and also at the tip of the water discharge pipe, the water discharge state such as the adjustment of the water discharge flow rate Performing the adjustment, that is, any of the two types of operations can be performed at the tip of the water discharge pipe, and the convenience can be further enhanced.

However, in this case, the non-contact type change-over switch and the contact operation part coexist at the same tip of the water discharge pipe, that is, at a position close to each other. In this case, the following new problem arises.
That is, when the user tries to adjust the water discharge state by operating the contact operation unit, the changeover switch mistakenly detects the user's hand, and the changeover switch is likely to be erroneously operated. .
In the case where the non-contact type changeover switch and the contact operation part are respectively disposed at the same tip of the water discharge pipe, it is desirable to prevent the malfunction of the faucet due to such erroneous detection of the changeover switch.

JP 2006-169949 A JP 2001-95709 A JP 2001-208229 A

  The present invention, against the background of the above circumstances, satisfactorily prevents a non-contact type changeover switch from malfunctioning based on human body detection when the user puts out his hand to operate the contact operation unit. It is an object of the present invention to provide a faucet that is provided with a non-contact type changeover switch and a contact operation portion at the tip of the water discharge pipe.

  Thus, according to the first aspect of the present invention, the tip of the water discharge pipe is provided with a non-contact type changeover switch for performing water discharge switching based on the presence or absence of human body detection and a contact operation unit for adjusting the water discharge state. A water faucet that controls operation of the water discharge switching valve and water discharge state control valve corresponding to each by the control unit based on the operation of the switch and the contact operation unit, wherein the control switch detects the human body from the human body detection. The water discharge is switched by changing the state to non-detection, and when the contact operating unit is operated while the human body is being detected, the water discharge is not switched even if the state is changed to non-detection. It is characterized by.

  According to a second aspect of the present invention, the tip of the water discharge pipe is provided with a non-contact type changeover switch for performing water discharge switching based on the presence or absence of human body detection, and a contact operation unit for performing water discharge state adjustment. The faucet is configured to control the operation of the water discharge switching valve and the water discharge state adjustment valve corresponding to each by the control unit based on the operation of the operation unit, and the control unit detects the human body from the non-detection of the human body. The water discharge is switched by changing the state, and the water discharge is not switched when the contact operation unit is operated within the first set time after the human body is detected.

  According to a third aspect of the present invention, the tip of the water discharge pipe is provided with a non-contact type changeover switch for performing water discharge switching based on the presence or absence of human body detection and a contact operation unit for performing water discharge state adjustment. The faucet is configured to control the operation of the water discharge switching valve and the water discharge state adjustment valve corresponding to each by the control unit based on the operation of the operation unit, and the control unit detects the human body from the non-detection of the human body. The water discharge is switched by changing the state, and the water discharge is switched even when the changeover switch changes from non-human body detection to human body detection during the second set time during or after the operation of the contact operation unit. It is characterized by the fact that it cannot be used.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the contact operation portion is disposed below the changeover switch.

Effects and effects of the invention

As described above, according to the first aspect of the present invention, when the changeover switch changes its state from human body detection to non-detection, water discharge is switched, and when the contact operation unit is operated while the changeover switch is detecting the human body, non-detection is performed. Even if the state changes, the water discharge is not switched.
When the touch switch is operated while the changeover switch is detecting a human body, human detection by the changeover switch is that the changeover switch has detected this by mistake when the user puts out his hand while trying to operate the touch control unit. Judgment can be made.

In this case, in this case, even in the case where the changeover switch changes to the non-detection of the human body, it is determined that the user's action is not intended for the operation of the changeover switch, so that the water discharge is not switched. It was made.
Therefore, according to the first aspect, it is possible to correctly distinguish whether the user is trying to operate the contact operation unit or the changeover switch, and the malfunction of the faucet can be prevented. .

Next, according to the second aspect of the present invention, when the changeover switch changes state to human body detection, the water discharge is switched, and when the contact operation unit is operated within the first set time after the human body detection at that time, the water discharge is switched. It is made to not perform.
That is, according to the second aspect, after a state change to human body detection, a predetermined time (first set time) is waited to determine which one of the non-contact changeover switch and the contact operation unit has been operated, and contact When the operation unit is not operated within the first set time, the water discharge is switched as if the changeover switch was operated. On the other hand, when the contact operation unit is operated within the first set time, it is not a changeover switch. It is determined that the contact operation unit has been operated, and water discharge switching is not performed.
Therefore, according to this second aspect, it is possible to prevent erroneous operation when the user operates the faucet, and to operate the faucet correctly according to the user's purpose.

Next, according to a third aspect of the present invention, water discharge is switched when the changeover switch changes state to human body detection, and the changeover switch changes state to human body detection during the second set time during or after operation of the contact operation unit. Even so, water discharge switching is not performed.
Even if the changeover switch changes state to human body detection, if the contact operation unit is operated at the same time, or if the changeover switch changes state to human body detection within a predetermined time after operation of the contact operation unit, It can be determined that the user does not intend to operate the changeover switch, but has pushed his hand to the tip of the water discharge tube for the purpose of operating the contact operation unit.

  Therefore, in such a case, even if the changeover switch changes to the state of human detection, the water discharge changeover operation is not performed. Also in this third aspect, when the user operates the faucet, It is possible to satisfactorily prevent malfunction of the faucet based on false detection.

The fourth aspect relates to the arrangement of the changeover switch and the contact operation part. Here, the contact operation part is arranged below the changeover switch.
When the faucet user intends to operate the contact operation unit, the user usually performs an operation of reaching the contact operation unit from below or from the side toward the contact operation unit.
Therefore, if the contact operation part is arranged below the changeover switch, it is effectively avoided that the changeover switch mistakenly detects this when the user puts his / her hand to operate the contact operation part. It is possible to prevent the malfunction of the faucet.

Here, the non-contact type changeover switch can be configured to switch between water discharge and water stoppage. Alternatively, it is possible to switch between water and hot water (mixed water of water and hot water), and further switch between raw water and purified water which are tap water.
On the other hand, the contact operation unit can be configured to adjust the flow rate of discharged water or adjust the temperature of discharged water.

In addition, the water discharge pipe may have a shape that is lowered downward from the uppermost position to the tip, and the above-described changeover switch and contact operation portion may be provided in the downwardly lowered shape portion.
In this case, the water discharge pipe can be an inverted U-shaped gooseneck shape.

The contact operation part can be an electric operation part. That is, it is possible to generate an electrical signal corresponding to the operation amount of the contact operation unit.
In this case, it is possible to adjust the water discharge state by operating the corresponding control valve based on the electrical signal in the control unit.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a faucet of the present embodiment, and 12 is a water discharge pipe in the faucet 10.
The water discharge pipe 12 is provided in a form that rises from a mounting surface 14 that is provided horizontally such as the upper surface of the counter.
The water discharge pipe 12 has an inverted U-shaped gooseneck shape as a whole, and a water discharge port 16 is provided at the tip thereof.
Further, the water discharge pipe 12 has a descending shape portion 12A that is lowered downward from the top to the front end, a non-contact type changeover switch 18 that performs water discharge switching on the upper surface of the front end portion, and a contact operation unit 20 that performs water discharge state adjustment. And are provided.
Here, the contact operation unit 20 is a dial operation unit that adjusts the water discharge state by rotation.
Here, the changeover switch 18 has a circular outer peripheral shape, and the contact operation unit 20 has a circular inner shape and an outer peripheral shape correspondingly.

A concave portion 22 having a shape corresponding to the outer peripheral shape of the contact operation portion 20 is provided at the distal end portion of the water discharge pipe 12 as shown in FIG. The contact operating portion 20 is provided in the recessed portion 22 together with the changeover switch 18.
Here, the contact operation unit 20 is fitted into the recess 22 in a rotatable state.

The contact operation unit 20 is fitted in the recess 22 so that the upper surface (top surface) is flush with the upper surface of the water discharge pipe 12.
Further, a part of the contact operation unit 20 is protruded to the side of the opening of the side surface of the recess 22, that is, the side surface of the water discharge pipe 12.
Therefore, the contact operation part 20 can rotate this by picking the protrusion part 20A to the side by hand.

In this embodiment, the changeover switch 18 performs water discharge switching such as switching between water discharge and water stop based on the presence or absence of human body detection when the user puts out his hand.
Moreover, the contact operation part 20 performs water discharge state adjustment, such as flow volume adjustment of water discharge, by rotation operation.

However, the contact operation unit 20 is configured as an electrical operation unit. When the contact operation unit 20 is rotated, the rotation position detection sensor detects this and generates a signal corresponding to the rotation position. And the signal is sent to the below-mentioned control part 46, and the control part 46 operates the corresponding control valve based on the signal.
Therefore, the contact operation unit 20 can be rotated very lightly.

The water discharge pipe 12 is provided with a display unit 24 for displaying the current water discharge state such as the water discharge flow rate and the water discharge temperature on the upper surface and directly above the contact operation unit 20. In the contact operation unit 20, an instruction unit (a mark) 26 indicating any position of the display unit 24 is provided so as to rotate integrally with the contact operation unit 20.
Therefore, when the contact operation unit 20 is rotated, the user can clearly recognize which water discharge state is the current water discharge state by the instruction unit 26 and the display unit 24.

In FIG. 2, 28 is a water supply passage for supplying cold water, 30 is a water supply passage for supplying hot water, 32 is a mixture of cold water and hot water sent through these water supply passage 28 and hot water supply passage 30, and the mixing ratio thereof. Is a mixing valve for adjusting the valve section 34 and a motor (here, a stepping motor) 36 for adjusting the opening thereof.
The mixing valve 32 can continuously change the mixing ratio of water (cold water; hereinafter, simply referred to as cold water) and hot water. That is, the temperature of the mixed water (hereinafter simply referred to as hot water) can be continuously changed.
38 is a supply path for supplying water or hot water (in some cases hot water) from the mixing valve 32 to the water discharge pipe 12, and a flow rate adjusting valve (water discharge switching valve and water discharge) also serving as a water discharge valve on the supply path 38. A state adjusting valve) 40 is provided.

The flow rate adjusting valve 40 includes a valve portion 42 and a motor (here, a stepping motor) 44 that adjusts the opening thereof.
The flow rate adjusting valve 40 can continuously change the opening degree of the valve portion 42 by a motor 44, thereby continuously changing the flow rate of water or hot water sent to the water discharge pipe 12 through the supply path 38. It is possible.
Therefore, the flow rate adjustment valve 40 also functions as an on-off valve (discharge water valve) that opens and closes the supply path 38 by closing or opening the valve portion 42.
A temperature sensor 45 is provided on the supply path 38.

A control unit 46 is electrically connected to the control unit 46 with the changeover switch 18 and the contact operation unit 20 (specifically, a rotational position detection sensor for detecting the rotational position).
The control unit 46 is also electrically connected to the motor 36 of the mixing valve 32, the motor 44 of the flow rate adjustment valve 40, and the temperature sensor 45.
In this embodiment, the operation of the mixing valve 32 and the flow rate adjustment valve 40 is controlled by commands from the control unit 46, respectively.

48 is a water purification path provided in a state where the water supply path 28 and the supply path 38 are connected by bypassing the mixing valve 32, the flow rate adjustment valve 40, and the temperature sensor 45, and tap water is supplied to the water purification path 48. A purifying filter 50 and a water purifying valve 52 are provided for passing and purifying at that time.
Here, the water purification valve 52 has a valve portion 54 and a motor 56 that adjusts the opening thereof, and the motor 56 is electrically connected to the control portion 46, and the motor 56 is a water purification valve. The (water discharge switching valve) 52 is controlled by the control unit 46.
Here, the water purification valve 52 is a water discharge valve that opens and closes the valve portion 54 with a motor 56. However, the opening degree of the valve part 54 may be continuously changed depending on the case, and the valve part 54 may also perform clean water discharge and flow rate adjustment.

The changeover switch 18 can be configured as various changeover switches, and the contact operation unit 20 can also be configured for various water discharge state adjustments accordingly.
For example, the changeover switch 18 can be configured as a changeover switch that switches between water discharge and water stoppage, and the contact operation unit 20 can be configured as an operation unit that continuously adjusts the water discharge flow rate.

  In this case, for example, the user operates the change-over switch 18 in a non-contact operation under a water-stopping condition (hand-holding operation on the upper front of the change-over switch, strictly in front of the front of the change-over switch, or thereafter from above the change-over switch 18 When the hand is removed, a signal from the changeover switch 18 is input to the control unit 46, and the control unit 46 opens the flow rate adjustment valve 40.

Here, hot water or water is supplied to the water discharge pipe 12 through the supply path 38 in accordance with the valve state of the mixing valve 32, and is discharged from the water discharge port 16.
Further, when the contact operation unit 20 is rotated, the opening degree of the valve unit 42 in the flow rate adjustment valve 40 is changed, and the flow rate of water discharged from the water discharge port 16 is adjusted.

At this time, if the mixing valve 32 is switched to the water side, water is discharged from the water discharge port 16, and the water discharge flow rate is adjusted by the operation of the contact operation unit 20.
Alternatively, if the mixing valve 32 is switched to the hot water side, hot water is discharged from the water outlet 16, and the discharged water flow rate is adjusted by the operation of the contact operation unit 20.

In these cases, the faucet 10 can be configured with a structure excluding the water purification channel 48 and the water purification filter 50 and the water purification valve 52 provided on the water purification channel 48 in FIG.
Alternatively, such a water purification channel 48, a water purification filter 50, and a water purification valve 52 are provided, and the purified water is discharged or stopped by a separate operation means, or the flow rate of the purified water is adjusted in some cases. Is also possible.

Now, when the changeover switch 18 is operated in a non-contact state again while water is being discharged from the water discharge port 16, the flow rate adjustment valve 40 is closed by the control unit 46 in response to a signal from the changeover switch 18. Here, water discharge from the water discharge port 16 stops. That is, the water is stopped.
As described above, the change-over switch 18 performs a switching operation each time a non-contact operation (hand-holding operation) is performed.

The changeover switch 18 can also be configured for switching between water and hot water.
In this case, an operation unit for switching between water discharge and water stop is provided separately.

  When the changeover switch is configured to switch between water and hot water in this way, the mixing valve 32 is switched between the water side and the hot water side every time the changeover switch 18 is operated in a non-contact manner, and the contact switch 18 is operated in a non-contact manner. In the case of switching to the water discharge side, the mixing valve 32 blocks the hot water supply path 30 and the supply path 38, and only the water supply path 28 is brought into communication with the supply path 38, and only water from the water supply path 28 is supplied. The water is discharged from the water outlet 16 through the supply path 38.

  When the one changeover switch 18 is switched to the hot water side, the mixing valve 32 is switched to a state in which water from the water supply passage 28 and hot water from the hot water supply passage 30 are mixed at a predetermined ratio, and hot water in a mixed state is supplied. The water is guided to the water discharge pipe 12 through the passage 38 and discharged from the water discharge port 16.

Further, when water is discharged from the water discharge port 16, the water discharge flow rate of water is adjusted by rotating the contact operation unit 20, and when hot water is discharged from the water discharge port 16, rotation operation of the contact operation unit 20 The water flow rate of hot water is adjusted.
At this time, the user can clearly recognize the current water discharge flow rate by the instruction unit 26 provided in the contact operation unit 20 and the display unit 24 provided in the water discharge pipe 12.
In this case, the temperature of the hot water can be adjusted by a separate operation unit.

When the changeover switch 18 is configured for switching between water and hot water, the contact operation unit 20 can be configured as an operation unit for adjusting the temperature of discharged water (hot water).
In this case, the temperature of the hot water discharged from the spout 16 can be adjusted by rotating the contact operation unit 20.
Specifically, in this case, when the contact operation unit 20 is rotated, the valve unit 34 of the mixing valve 32 is operated accordingly, and mixing of water from the water supply passage 28 and hot water from the hot water supply passage 30 is performed. Change the ratio.
At this time, the display unit 24 provided in the water discharge pipe 12 and the instruction unit 26 provided in the contact operation unit 20 allow the user to clearly recognize which temperature the current water discharge temperature is.

The changeover switch 18 can also be configured as a switch for switching between raw water (tap water) and purified water.
In this case, every time the changeover switch 18 is operated in a non-contact manner, the water discharged from the water outlet 16 is switched from the raw water to the purified water or vice versa.
For example, when the changeover switch 18 is operated in a non-contact manner while raw water is being discharged from the water discharge port 16, the flow rate adjustment valve 40 on the supply path 38 is closed, and instead, the water purification valve 52 is opened to supply water. The water from the channel 28 flows into the branched water purification channel 48 side, passes through the water purification filter 50, and is purified there, and the purified water is sent to the water discharge pipe 12 and discharged from the water discharge port 16. The

On the other hand, when the changeover switch 18 is operated in a non-contact state in this state, the water purification valve 52 is closed and the flow control valve 40 on the supply path 38 is opened instead. Raw water (water or hot water or hot water as the case may be) is discharged.
At this time, the contact operation unit 20 is usually configured for adjusting the discharge flow rate of raw water.
When the changeover switch 18 is configured to switch between raw water and purified water as described above, an operation unit for switching between water discharge and water stop is provided separately.

In FIG. 2, the mixing valve 32 is provided at the junction of the water supply path 28 and the hot water supply path 30, but instead of the mixing valve 32, a discharge water valve is provided on the water supply path 28 as shown in FIG. 3. It is also possible to provide a flow rate control valve 58 that also serves as a flow rate control valve 60 that also serves as a water discharge valve on the hot water supply passage 30.
Here, the flow rate adjusting valve 58 can continuously adjust the opening degree of the valve portion 62 by a motor (here, a stepping motor) 64, and the flow rate adjusting valve 60 has a valve portion 66 as a motor (here, a stepping motor). ) The opening can be adjusted continuously at 68.

In the one shown in FIG. 3, the water discharge temperature can be adjusted by continuously changing the mixing ratio of water and hot water by adjusting the opening degree of the flow control valves 58 and 60, respectively. By changing the opening degree of the flow rate control valves 58 and 60 together (with the mixing ratio of water and hot water kept constant), it is possible to continuously change the discharged water flow rate while keeping the discharged water temperature constant. It is.
Therefore, in the one shown in FIG. 3, the flow rate adjusting valve 40 on the supply path 38 shown in FIG. 2 is also omitted.
A temperature sensor 45 is provided on each of the water supply path 28 and the hot water supply path 30, and these are electrically connected to the control unit 46.
The other points are the same as those shown in FIG.

  In this embodiment, the changeover switch 18 is a non-contact type switch that detects a human body in a non-contact manner. On the other hand, the dial operation unit 20 is a contact type operation unit. When the hand is brought close to this when trying to operate the switch 18, the changeover switch 18 may erroneously detect this, and the changeover switch 18 may malfunction.

4 to 6 show examples of control by the control unit 46 for effectively preventing erroneous detection by the changeover switch 18, that is, erroneous operation of the changeover switch 18. FIG.
However, these examples in FIGS. 4 to 6 are examples in which water discharge and water stop are switched by the changeover switch 18 and the water discharge flow rate is adjusted by the contact operation unit 20.

First, in the example of FIG. 4, water discharge is switched at the timing when the changeover switch 18 changes from human body detection to non-detection, that is, from the water stop to the water discharge state if the water stop state, and from the water discharge to the water stop if the water discharge state. This is an example of switching the water discharge.
However, in this example, even if the changeover switch 18 changes from a human body detection state to a non-detection state, when the contact operation unit 20 is operated while the changeover switch 18 is detecting a person (a signal is displayed when the contact operation unit 20 is operated). Is input to the control unit 46), even if the changeover switch 18 changes its state to non-detection of the human body, the water discharge is not switched.
The numerical value in the water discharge flow rate column of FIG. 4 represents the magnitude of the water discharge flow rate, and the numerical value in the contact operation column represents the degree of the operation amount of the contact operation unit 20.

In the above embodiment, when the contact operation unit 20 is operated while the changeover switch 18 is detecting the human body, the human body detection by the changeover switch 18 is performed when the user puts out his hand to operate the contact operation unit 20. It is determined that the changeover switch 18 has detected this erroneously, and it is determined that the user's action is not intended for the operation of the changeover switch 18 even if the changeover switch 18 changes its state to non-human body detection. The water discharge switching is not performed.
Therefore, according to this embodiment, it is possible to correctly distinguish whether the user intends to operate the contact operation unit 20 or the switch 18 and to prevent malfunction of the water tap 10. Can do.

Whereas the example of FIG. 5, the changeover switch 18 to switch water discharge by state changes to the human body detected from the state of the human body non-detection is and the touch operating unit 20 within the first set time T ₁ of the post-human body detection operation This is an example in which water discharge switching is not performed even in the detection state.
That this example, the changeover switch 18 is not performed immediately switching spouting be changed state in a human body detection, first wait set time T _1, the or touch operating unit 20 changeover switch 18 has been operated has been operated or the determining of, and when the touch operating unit is not operated within the first set time T ₁ performs switching spouting it is judged that the changeover switch 18 is operated, whereas, within the set time T ₁ When the contact operation unit 20 is operated, it is determined that the human body detection by the changeover switch 18 is caused by the user's hand putting out his / her hand to operate the contact operation unit 20, and the water discharge changeover by the changeover switch 18 is not performed. This is an example.

  Also in the example of FIG. 5, it is possible to prevent an erroneous operation when the user operates the faucet 10, and the faucet 10 can be operated correctly according to the user's purpose.

On the other hand, in the example of FIG. 6, similarly to the example of FIG. 5, the discharge switch is switched by the changeover switch 18 being changed to human body detection, and the second set time after or after the operation of the contact operation unit 20. also changeover switch 18 in the T ₂ is changed state in a human body detection, an example in which none so as not to perform switching water discharge.
Also in the example of FIG. 6, it is possible to satisfactorily prevent malfunction of the faucet 10 based on erroneous detection by the changeover switch 18 when the user operates the faucet 10.

Next, FIG. 7 shows another embodiment of the present invention.
This example is an example in which a rotary contact operation unit 80 is disposed near the distal end of the water discharge pipe 12 and below the changeover switch 18.
The example shown in FIG. 7 is an example in which the contact operation unit 80 is provided in a form in which the contact operation unit 80 protrudes to the side of the water discharge pipe 12 and rotates around a rotation axis perpendicular to the axis of the water discharge pipe 12.
Here, the contact operation portion 80 is provided with a lever portion 82 that protrudes in a direction orthogonal to the rotation axis.

FIG. 8 shows still another embodiment of the present invention.
This example is also an example in which the contact operation unit 84 is arranged at the tip of the water discharge pipe 12 and close to the lower side of the changeover switch 18.
However, in this example, the contact operation unit 84 is provided in a ring shape along the outer peripheral surface of the water discharge pipe 12 and is rotatable around the axis of the water discharge pipe 12.
Also in this example, the contact operation portion 84 is provided with a lever portion 86 protruding sideways.

When the user of the faucet tries to operate the contact operation units 80 and 84, the user usually reaches the contact operation units 80 and 84 from the lower side or the side toward the contact operation units 80 and 84. I do.
Therefore, if the contact operation units 80 and 84 are arranged below the changeover switch 18, the changeover switch 18 erroneously detects this when the user puts out his / her hand to operate the contact operation units 80 and 84. Can be effectively avoided, and malfunction of the faucet 10 can be satisfactorily prevented.

  Although the embodiments of the present invention have been described in detail above, these are merely examples, and the present invention can be configured in various modifications without departing from the spirit of the present invention.

It is a perspective view of the water tap which is one embodiment of the present invention. It is the figure which showed typically the structure of the faucet of the embodiment. It is a figure of other embodiment of this invention. FIG. 4 is a diagram illustrating an example of control by the control unit in FIGS. 1 to 3 in a time chart. It is the figure which represented the example of the control different from FIG. 4 with the time chart. It is the figure which represented the example of the control different from FIG.4 and FIG.5 with the time chart. It is the figure which showed the other example of arrangement | positioning and shape of a contact operation part. It is the figure which showed the further example of arrangement | positioning and shape of a contact operation part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water tap 12 Water discharge pipe 16 Water discharge port 18 Changeover switch 20 Contact operation part 46 Control part

Claims (4)

The tip of the water discharge pipe is provided with a non-contact type change-over switch that switches water discharge based on the presence or absence of human body detection and a contact operation unit that adjusts the water discharge state, and based on the operation of the change-over switch and the contact operation unit A faucet adapted to control the operation of a water discharge switching valve and a water discharge state adjusting valve, respectively, by a control unit, wherein the control unit performs water discharge switching when the changeover switch changes state from human body detection to non-detection. A faucet characterized in that, when the contact operation unit is operated while the changeover switch is detecting a human body, the water discharge is not changed even if the state is changed to non-detection. The tip of the water discharge pipe is provided with a non-contact type change-over switch that switches water discharge based on the presence or absence of human body detection and a contact operation unit that adjusts the water discharge state, and based on the operation of the change-over switch and the contact operation unit The faucet is configured to control the operation of the corresponding water discharge switching valve and water discharge state adjusting valve by the control unit, and the control unit switches water discharge when the changeover switch changes from non-human body detection to human body detection. The water faucet is characterized in that the water discharge is not switched when the contact operation unit is operated within a first set time after human body detection. The tip of the water discharge pipe is provided with a non-contact type change-over switch that switches water discharge based on the presence or absence of human body detection and a contact operation unit that adjusts the water discharge state, and based on the operation of the change-over switch and the contact operation unit The faucet is configured to control the operation of the corresponding water discharge switching valve and water discharge state adjusting valve by the control unit, and the control unit switches water discharge when the changeover switch changes from non-human body detection to human body detection. And the discharge switch is not switched even if the changeover switch changes from non-human body detection to human body detection during the second set time after or during the operation of the contact operation unit. A faucet.   The water faucet according to any one of claims 1 to 3, wherein the contact operation portion is disposed below the changeover switch.

Images