JPH089247Y2 - Faucet with switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a faucet with a switch.

(Background of the Invention) In recent years, an automatic faucet has been developed that detects a hand or a human body with a sensor and opens a solenoid valve to automatically discharge water from a discharge port.
in use.

By the way, as one of the automatic faucets, there is one in which an automatic water spouting device is attached to a normal faucet so that the whole of them works as an automatic faucet. And in such a type of automatic faucet, a switch is provided in the automatic water discharge device,
When that switch is turned on, it works as an automatic faucet and turns off
It is considered that when operated, the solenoid valve is set to an open state so that water spouting and water spouting stop act as a normal faucet in which only the original handle of the faucet is operated.

Therefore, in the case of such a faucet with a switch, it is necessary to prevent water from entering the contact side of the switch in order to prevent occurrence of a short circuit accident or the like. In this case, generally, as shown in FIG. 7, a hole 202 is made in the faucet casing 200, and the hole 202 is made into the adhesive-attached sheet 204.
It is a method in which the switch 206 is operated over the sheet 204 by blocking the liquid tightly with.

(Problems to be solved by the invention) However, in such a waterproof structure, the sheet 204 is inevitably peeled off while the switch 206 is repeatedly operated, and thus it is difficult to maintain the waterproof effect for a long time.

(Means for Solving the Problem) The faucet with a switch of the present invention has been devised to solve such a problem, and its gist is a faucet equipped with a switch that can be operated from the outside. As the switch, the one in which the operating portion and the contact portion are separated from each other is used, and the operating portion is disposed outside and the contact portion is disposed inside so as to face each other with the waterproof wall layer in between. While the opening and closing is performed by the magnetic force of the magnet, the operating portion is horizontally rotatable around the axis, and the magnet is held on the contact portion side surface of the operating portion, while the magnet is defined with respect to the center of rotation. A stopper portion is provided at a position on the opposite side so as to project toward the contact portion, and the stopper is brought into contact with the stopper portion so that the rotation angle position of the operation portion is directly opposed to the magnet portion by the magnet and the magnetic force is applied to the contact portion. First place to work And the first and second protrusions for positioning the magnet and the second position where the magnetic force of the magnet does not act on the contact portion are provided on the waterproof wall layer side.

(Operation and effect of the invention) The faucet with a switch of the present invention uses a switch in which the operating part and the contact part are separated, and the operating part is provided outside the waterproof wall layer so that the switch can be operated from the outside. The contact part is provided inside the waterproof wall layer in order to prevent water from entering the contact part side.

By doing so, the contact part is completely isolated from the outside by the waterproof wall layer, so that water may enter the contact part side of the switch, and further, a problem such as a short circuit accident caused by the invaded water may occur. It is possible to surely prevent the occurrence and to prevent it for a long time.

The switch-equipped faucet of the present invention has a position where the contact portion is turned on by the stopper portion provided on the operation portion side and the first and second protrusions provided on the waterproof wall layer side when the operation portion is rotated. The operating portion can be positioned at the off position, and therefore the operability is good and the operating portion can be accurately and easily positioned at the on position and the off position.

Also, since the magnet and the stopper are located on the opposite sides of the rotation center of the operating part, the weight balance when rotating the operating part is good, and therefore the magnet does not shake and malfunctions due to the shake of the magnet are prevented. This has the advantage of being able to prevent and ensure accurate switching.

(Example) Next, the Example of this invention is described in detail based on drawing.

In FIG. 3, reference numeral 10 denotes an automatic water spouting device, which is attached to the tip of a water spout 14 of a water spout 12 and constitutes an automatic water spout together with the water spout 12. This automatic water discharger 10 is shown in FIG.
As shown in FIG. 4, it has an ultrasonic sensor composed of a transmitter 16 and a receiver 18, and by this ultrasonic sensor, the ejected hand 20 is selectively detected by sensing an extended hand. Automatic water discharge.

As shown in FIG. 4, the automatic water discharger 10 has an upper casing 22 and a lower casing 24, which are fixed to each other by screwing screws into a boss portion 26 formed integrally with the casing. There is.

A housing 28 for forming a water passage is incorporated inside the casings 22 and 24. This housing 28
Has an opening shape portion having a large diameter at the upper end and the lower end.

A ring-shaped mounting member having a lid 30, a rubber plate 32, and an internal thread on the inner peripheral surface is provided in the opening-shaped portion on the upper end side of the housing 28.
34 are arranged in a stacked state, and they are fixed to the housing 28 by a cap nut 36. The automatic water spouting device 10 is adapted to be screwed to the water spout 14 at the mounting member 34 thereof. The lid 30 and the rubber plate 32 have
An inflow port 38 is formed in the center, and water from the water outlet 14 is allowed to flow into the housing 28 through these inflow ports 38. A strainer 40 is arranged at the inflow port 38.

On the other hand, the opening 42 on the lower end side of the housing 28 has a lid 42.
And the discharge port member 46 are arranged, and these are fixed by screwing the discharge port member 46 and the housing 28.

The lid 42 has a first outlet 48 and a second outlet not shown. Here, the outlets are selectively opened by a valve body (not shown) operated by an operation lever 70 (see FIG. 5) via a link mechanism 72, and the water inside the housing 28 is opened. Are allowed to flow out through the outlet on the open side.

The water that has flowed out through the first outlet 48 is the discharge port member 46.
The water discharged to the outside from the discharge port 20 and discharged through the second outlet is discharged from the shower hole 62 (see FIG. 3) through the water chamber 56. A commutator 52 and a wire mesh 54 are provided on the water passage from the first outlet 42, and an inner cylinder member 44 having a dispersion portion 64 for dispersing water is arranged in the water chamber 56. ing.

A main passage 80 is formed inside the housing 28, and a main valve portion 82 for opening and closing the main passage 80 is formed on the main passage 80.
Is provided. FIG. 6 shows a specific structure of the main valve portion 82 and its peripheral portion. In this figure, 84 is a diaphragm valve, and this diaphragm valve 84 is seated on or separated from a valve seat 88 provided at the end of the tubular portion 86, thereby forming a part of the main passage 80. The passage 90 inside the tubular portion 86 and the passage 92 outside thereof are communicated with or cut off from each other.

A control chamber 94 for controlling opening / closing of the diaphragm valve 84 is formed on the rear side (right side in the figure) of the diaphragm valve 84. The control chamber 94 is connected to a flow path downstream of the diaphragm valve 84 through a communication hole 96, and the communication hole 96 is provided.
Is opened and closed by a solenoid valve 98 as a pilot valve. The electromagnetic valve 98 opens the communication hole 96 when the hand held by the ultrasonic sensor is detected, and closes the hand when the hand is drawn.

 The specific operation of the main valve portion 82 is as follows.

The water supply pressure is introduced into the control chamber 94 through a minute gap between the center hole 102 of the diaphragm valve 84 and the metal pin 103 provided so as to penetrate the center hole 102. Therefore, when the ultrasonic sensor does not detect the hand and the communication hole 96 is closed by the valve body 100 of the solenoid valve 98, the control chamber 94
The diaphragm valve 84 is maintained in the closed state based on the action of the water supply pressure introduced to the valve. Although the pressure of water from the passage 90 side and the pressure of water from the control chamber 94 side act on the diaphragm valve 84 in mutually opposite directions, the pressure receiving area and the rear surface of the diaphragm valve 84 on the front side (passage 90 side) This is because there is a difference between the pressure receiving area on the side (control chamber 94 side) and the force in the closing direction acts on the diaphragm valve 84 when the communication hole 96 is closed. At this time, spouting from the spout 20 or the shower hole 62 is blocked.

On the other hand, the hand is detected by the ultrasonic sensor and the valve body 10 of the solenoid valve 98
When the communication hole 96 is opened at 0, the pressure in the control chamber 94 escapes to the outside, so that the diaphragm valve 84 is pushed open by the force of the water on the passage 90 side to open the main passage 80. As a result, the water from the water discharge port 12 of the faucet flows through the main passage 80 and then flows out from the discharge port 20 of the discharge port member 46 or the shower hole 62.
Then, when the communication hole 96 is closed again by the valve body 100 of the solenoid valve 98, the pressure in the control chamber 94 increases again and the diaphragm valve
84 is pushed back, closing the main passage 80 and stopping water discharge.

As shown in FIG. 4, a bypass passage 105 is formed inside the housing 28 so as to bypass the main valve portion 82.
A relief valve 104 is provided to prevent the water pressure in 80 from exceeding a certain level.

The automatic water discharger 10 of this example has a battery box 108 for accommodating the dry battery 106 as a power source, and a switch 110 (see FIG. 5) for setting the solenoid valve 98 to the normally open state. .

As shown in detail in FIG. 1, the switch 110 is composed of an operating portion provided with an operating knob 112, an operating member 124 and a magnet 116, and a reed switch 114 as a contact portion. The reed switch 114 is mounted on the printed circuit board 115 in the casings 22 and 24 provided with a power supply circuit, an ultrasonic sensor transmission / reception circuit, and the like, while the operation portion including the operation knob 112 and the like is the upper casing 22. Recesses formed in 11
Housed within 8.

The wall portion of the recess 118 is integrally formed with the upper casing 22 so as to separate the inside and the outside. Here, the reed switch 114 is arranged so as to be substantially in contact with the lower surface of the bottom wall 120 of the recess 118.

The bottom wall 120 of the recess 118 is set to have a sufficiently thin wall thickness as shown in the drawing, and a projection 122 is integrally provided at the center thereof. The action member 124 is rotatably attached to the protrusion 122 in the center hole thereof with a screw 126, and the operation knob 112 is fixed to the upper surface of the action member 124. It should be noted that the operation knob 112 is detachably or irremovably fixed to the action member 124 by an adhesive or an adhesive here. When the operation knob 112 is fixed, the operation knob 112 is positioned on the acting member 124 by the positioning engagement mechanism.

As shown in FIG. 2, the action member 124 has a longitudinal shape and has a magnet holding portion 128 on one end side in the longitudinal direction. A holding hole 130 is formed on the lower surface of the magnet holding portion 128, and the magnet 11 is inserted into the holding hole 130.
Six are housed and arranged.

Further, a stopper portion 132 is formed on the other end side of the action member 124, and the action member 124 has a first position where the stopper portion 132 abuts on a first protrusion 134 projecting in the recess 118. , 90 ° between the second position in contact with the second protrusion 136 and the second position. Then, as shown in FIG. 2, the contact is closed when the action member 124 is moved to the first position (FIG. (A)), and is moved to the second position (FIG. (B)). Reed switch 114 to open
Are mounted on the printed circuit board 115.

In this example, when the contact of the reed switch 114 is opened, the supply of electric power to each electric circuit unit is stopped, the automatic water discharger 10 is set to the inactive state, and the solenoid valve 98 is opened. Is set.

In this example, when the operating knob 112 of the switch 110 is operated to move the acting member 124 to the first position of FIG. 2 (A), the contact point of the reed switch 114 is closed by the magnetic force of the magnet 116, and the automatic water spouting device. 10 is activated. Therefore, water is discharged from the discharge port 20 or the shower hole 62 based on the detection result of the ultrasonic sensor, and the faucet 12 and the automatic water discharger 10 work as an automatic water faucet as a whole.

On the other hand, when the operating member 112 is moved to the second position in FIG. 2B by the operation knob 112, the magnetic force of the magnet 116 does not affect the reed switch 114, and the contact of the reed switch 114 opens. Then, the supply of electric power to each electric circuit section of the automatic water discharger 10 is stopped, and the solenoid valve 98 is left open. Therefore, in this case, spouting water from the discharge port 20 or the shower hole 62 causes the operation lever 138 (the third
(Fig.) Will be controlled only by the operation of the faucet 12
And the automatic water spouting device 10 acts as a normal faucet as a whole.

Thus, in this example, the switch 110 for switching between the function as the automatic faucet and the function as a normal faucet includes the operation knob 112, the action member 124 and the magnet.
Operation part including 116 and reed switch 114 as contact part
And a reed switch 114 as a contact part, which is provided separately for the casing together with a power supply circuit, an ultrasonic wave transmitting / receiving circuit, etc., by a bottom wall 120 of a recess 118 formed integrally with the upper casing 22. It is provided within 22,24. Therefore, the intrusion of water into the casings 22 and 24 from the mounting portion of the switch 110 is reliably prevented by the bottom wall 120 of the recess 118 for a long time. As is clear from this,
Here, the bottom wall 120 of the recess 118 serves as a waterproof wall layer.

Although the embodiment of the present invention has been described in detail above, the present invention is not limited to this.

For example, the switch 110 may be used for purposes other than the above example. In addition to this, if the faucet equipped with a switch is a faucet other than the above, for example, the function as an automatic faucet is pre-established.
The invention can be configured in various forms based on the knowledge of those skilled in the art without departing from the spirit of the invention, such as being applicable to an automatic faucet of the type integrally incorporated in 12.

[Brief description of drawings]

FIG. 1 is a front sectional view of an essential part of an automatic water discharger for an automatic faucet according to an embodiment of the present invention, FIG. 2 (A) is a sectional view of its main part, and FIG. 2 (B). FIG. 4A is a sectional view corresponding to FIG. 2A in an operating state different from that. Third
FIG. 4 is a perspective view of the same automatic water faucet, FIG. 4 is a front sectional view of an automatic water discharging device in the same automatic water faucet, FIG. 5 is a partially cutaway plan view of the same automatic water discharging device, and FIG. The figure is a cross-sectional view of main parts of the main valve portion and its peripheral portion in the same automatic water discharger. FIG. 7 is a sectional view corresponding to FIG. 1 of a comparative example of a faucet with a switch. 10: Automatic water spouting device, 12: Faucet 82: Main valve part, 98: Solenoid valve 110: Switch, 112: Control knob 114: Reed switch, 116: Magnet 118: Recess, 120: Bottom wall 124: Working member

Claims (1)

[Scope of utility model registration request] 1. A water faucet provided with a switch that can be operated from the outside, wherein the switch has a form in which an operating part and a contact part are separated, and the operating part is provided outside with a waterproof wall layer interposed therebetween. While arranging the contact portions inside each other in a state of facing each other and opening and closing the contact portions by the magnetic force of a magnet,
The operation part is horizontally rotatable about an axis, and a magnet is held on the surface of the operation part on the contact part side, and protrudes toward the contact part at a position opposite to the magnet with respect to the center of rotation. And a magnetic force of the magnet that is in contact with the stopper portion, and that the magnet rotates the angular position of the operating portion so that the magnet just opposes the contact portion to exert a magnetic force on the contact portion. A water faucet with a switch, wherein first and second projections for positioning at a second position that does not act on the contact portion are provided on the waterproof wall layer side.