JP3084428B2 - Faucet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a faucet installed in a bathroom or the like of a hotel. Water faucet from which water and hot water are sprayed from a hand shower.

[0002]

2. Description of the Related Art Conventionally, hotel bathrooms and the like are constructed as shown in FIG. As shown in FIG. 3, a spout 53 for supplying hot water or water to a bathtub (not shown) is attached to a lower portion of a wall surface 52 of the bath room 51, and a hand shower 54 is provided to an upper portion of the wall surface 52. A latching member 55 for latching is attached. A shower water supply device 56 for supplying hot water or water to the hand shower 54 is attached to a central portion of the wall surface 52. The shower water supply device 56 has a shower hose 57. Is connected.

On the other hand, a shower water supply device 56 and a faucet 53
And the temperature of the mixed hot water (mixed hot water and cold water) discharged from the faucet 53 and the hand shower 54,
An adjuster 58 for adjusting a water pressure or the like is provided. Outside the wall surface 52 of the bath room 51, there is provided a mixing portion 59 to which a pipe of hot water and water from a water supply source (not shown) is connected, and the adjuster 58 is linked to the mixing portion 59, The temperature, the water pressure, etc. of the mixed hot water discharged from the water faucet 53 and the hand shower 54 are adjusted.

A pipe 60 connected to the mixing section 59 is connected to a water faucet 53, and a pipe 61 is connected to a shower water supply device 56. The mixed hot water mixed in the mixing section 59 is discharged from the water discharge port 53A of the water faucet 53 when the switching valve 62 mounted on the water faucet 53 is at the position where the switching valve 62 is pushed down (the state shown in FIG. On the other hand, the switching valve 62
Is in the raised position (not shown), the valve port for the water discharge port 53A is closed, and the mixed hot water is ejected from the hand shower 54.

FIG. 4 is a sectional view showing the structure of the switching valve 62. As shown in FIG. 4, the switching valve 62 is
3 is provided at the base end. The switching valve 62 has a circular knob 63 attached to the upper part thereof, and a valve shaft 64 is attached to the center of the knob 63 so as to be able to move up and down (up and down). An activation valve 65 is provided at the distal end of the valve shaft 64, and a main valve 66 is provided coaxially with the activation valve 65.

The valve shaft 64 is inserted, and a valve port 67 opened and closed by the main valve 66 as the valve shaft 64 moves up and down is opened in the partition wall 68. Knob 6
3 is depressed, the valve shaft 64 is lowered, and the valve port 67 is open, the mixed hot water from the pipe 60 connected to the base end of the faucet 53 passes through the valve port 67, and 53A
Is discharged from. On the other hand, when the knob 63 is raised and the valve shaft 64 is moved upward, the main valve 66 opens the valve port 67.
Is closed. As a result, the mixed hot water mixed in the mixing section 59 passes through the pipe 61 and is supplied to the shower water supply device 5.
6. Discharged from the hand shower 54 via the shower hose 57. A spring 6 is provided outside the valve shaft 64.
Numeral 9 is elastically attached between the main valve 66 and the ceiling surface inside the spout 53 to urge the valve shaft 64 and the main valve 66 downward.

In the switching valve 62 configured as described above, the knob 63 is pushed down, and the spout 53
When a switching operation is performed to inject the mixed hot water from the hand shower 54 from the state where the mixed hot water is being discharged from A, the knob 63 is pulled up. At this time, the knob 63 is slightly raised, and the starting valve chamber 6 in which the starting valve 65 is located.
Since the water pressure of the mixed hot water is applied to 5A, the starting valve 65 receives the pushing force and urges the valve shaft 64 upward, so that the lifting operation of the knob 63 is configured to be light.

[0008]

The above conventional spout 53
When the switching valve 62 is switched to the hand shower 54 when the flow rate of the mixed hot water discharged from the water discharge port 53A is large, that is, when the water pressure is high, the switch 63 is lightly pulled up. However, there is a problem that the shower hose 57 moves violently due to strong water pressure at the moment when the mixed hot water is injected from the hand shower 54. In addition, since a hotel generally has a high water pressure applied to the faucet 53, when a mixed hot water is discharged from the spout 53A, if a slight gap is formed between the main valve 66 and the starting valve chamber 65A due to vibration or the like, Since high water pressure is applied to the starting valve chamber 65A and the starting valve 65 and the main valve 66 are raised by receiving a pushing force, the hand shower 54 is suddenly switched to the hand shower 54, and the shower hose 57 moves violently. Problems arise.

Therefore, in the present invention, when the water pressure applied to the faucet is higher than a predetermined value, the switching valve is prevented from being switched to the hand shower side, so that the hand shower is prevented from being switched.
It is an object of the present invention to prevent the shower hose from violently moving at a high water pressure.

[0010]

According to the present invention, in order to solve the above-mentioned problems, when a valve shaft is operated upward, water from a water supply source is jetted from a hand shower, while the valve shaft is moved downward. A spout provided with a switching valve for discharging water from a water supply source from a discharge port when operated, wherein the valve shaft has an upper main valve that opens and closes a valve port communicating with the discharge port. When an air hole communicating with the atmosphere is mounted coaxially with a lower valve on the lower side which slides in a watertight manner along the wall surface of the air chamber opened at the lower end, and when the valve shaft is operated upward,
The main valve is in contact with the lower surface of the valve port and the valve port is closed,
While the upper end surface of the air chamber is closed by the lower valve ,
The valve shaft is operated downward, and the valve port is opened to supply water.
Water from the source is being discharged from the discharge port through the valve port
In this state, the air in the air chamber is discharged from the air hole by the lower valve.
The air vent is closed and the pressure of the water entering the air chamber is reduced.
From above the lower valve and from below the main valve.
And the water pressure from above the main valve is equal to the effective water pressure.
The lower valve has an upper surface area slightly smaller than an upper surface area of the main valve so that the lower valve operates to maintain the open state of the main valve.

[0011]

According to the spout of the above construction, when the valve shaft of the switching valve is operated in the downward direction and water from the water supply source is discharged from the discharge port through the valve port, the air valve is operated by the lower valve. Air is discharged from the air hole, the lower valve closes the air hole, and the pressure of the water that has entered the air chamber increases from above the lower valve and from below the main valve. Are applied in a state where the directions are almost equal and the directions are opposite. As a result, the water pressure in the air chamber is canceled out, and the water pressure from the upper side of the main valve acts as an effective water pressure, so that the main valve is kept open and water from the water supply source is discharged through the valve port. Is discharged from. At this time, as the water pressure from the water supply source increases, the effective water pressure for the main valve increases, so that the force required to raise the valve shaft increases. Is suppressed, and the shower hose of the hand shower is prevented from violently moving at a high water pressure.

[0012]

Next, embodiments of the present invention will be described with reference to the drawings. As described in the section of the prior art, hotels and the like are provided with a water faucet and a hand shower as shown in FIG. 3, and the water faucet is mixed with hot water and cold water from a water supply source by mixing. A switching valve is provided which is operated when the mixed hot water is ejected from a spout or a hand shower.

FIG. 1 is a sectional view showing the structure of the switching valve 2 of the water faucet 1. The circular knob 3 of the switching valve 2 is in a depressed state and supplied from a mixing (not shown). The mixed hot water is discharged from the discharge port 7A through the valve port 7 opened in the partition wall 8. On the other hand, FIG.
Section in which the knob 3 of the switching valve 2 is in a raised state, the valve port 7 opened in the partition 8 is closed by the main valve 6, and the mixed hot water is injected from a hand shower (not shown). FIG.

As shown in FIG. 1, a valve shaft 4 is mounted at the center of the knob 3 of the switching valve 2 so as to be slidable in the vertical direction. A disc-shaped lower valve 5 is disposed at the lower end of the valve shaft 4, and a disc-shaped main valve 6 having a slightly larger area than the lower valve 5 is provided coaxially with the lower valve 5. . And faucet 1
The cap 12 is fitted to the lower part of the. An air hole 10 communicating with the atmosphere is opened in the cap 12, and an air chamber 11 communicating with the air hole 10 is formed. Then, as the valve shaft 4 slides in the vertical direction, the lower valve 5 having the U packing (or an O-ring) 5A fitted on the outer peripheral surface slides watertight along the wall surface of the air chamber 11. I do.

Mixing water supplied from a mixing unit (not shown) is supplied to the faucet 1 and is discharged through a valve port 7.
A, when discharged from A, the lower surface of the main valve 6 and the air chamber 11
The water pressure of the mixed hot water that has entered the air chamber 11 from the gap between the upper surface of the lower valve 5 and the upper surface of the lower valve 5 as shown by an arrow P1 and an arrow P2, respectively. Applied to Water pressure P1 applied to the lower surface of main valve 6
And the water pressures P2 applied to the upper surface of the lower valve 5 are substantially equal in magnitude and opposite in direction, so that the vertical water pressure in the air chamber 11 is canceled.

On the other hand, the water pressure of the mixed hot water is also applied to the upper surface of the main valve 6 as indicated by an arrow P3. As described above, the air chamber 11
Since the water pressure in the vertical direction inside is offset, only the water pressure P3 becomes the effective water pressure in the vertical direction, and presses the main valve 6 downward. Since the water pressure P3 is proportional to the water pressure of the mixed hot water supplied to the water faucet 1 from the outside, the force required to pull up the valve shaft 4 increases as the water pressure increases.
Therefore, if the water pressure of the mixed hot water exceeds a predetermined value, it becomes difficult to switch the switching valve 2 to the hand shower side by pulling up the knob 3, and the switching valve 2 cannot be switched unless the water pressure is low. When switching, the problem that the shower hose of the hand shower moves violently due to high water pressure is solved.

FIG. 2 shows a state in which the knob 3 is lifted and the valve shaft 4 is moved in a state where the water pressure of the mixed hot water or the like is lowered below a predetermined value by adjusting a mixer (not shown) and the knob 3 can be pulled up. It shows a state of being slid upward.

As shown in FIG. 2, when the knob 3 is pulled up and the valve shaft 4 is slid upward, the valve port 7 is closed by the main valve 6. Therefore, the discharge port 7A of the faucet 1
Is stopped, and the mixed hot water is discharged from a hand shower (not shown). In the state shown in FIG. 2, the upper end surface of the air chamber 11 is closed by the lower valve 5 and the valve port 7 is closed by the main valve 6.

In the above state, the water pressure P4 of the mixed hot water is
And the water pressure P5 of the mixed hot water is applied to the lower valve 5. In this water pressure application state, the water pressure P4 and the water pressure P5 are opposite in direction, and the lower area of the main valve 6 is slightly larger than the upper area of the lower valve 5.
The pressure difference of 5 is applied to the lower surface of the main valve 6 and the valve port 7 is closed.

As described above, when the knob 3 of the switching valve 2 is pulled up and the valve shaft 4 is slid upward, the pressure is applied to the lower surface of the main valve 6 even if the pressure of the mixed hot water is relatively large. Since the effective water pressure is the difference between the water pressure P4 and the water pressure P5 as described above, the valve shaft 4 can be depressed with a relatively light force, so that the switching is facilitated.

A spring 13 may be provided on the outer periphery of the valve shaft 4 so as to be in contact with the upper surface of the main valve 6. When the spring 13 is provided, the hand shower in the state of FIG. After using-, when the water is stopped by operating the adjuster 58, the main valve 6 is automatically lowered to return to the discharge state of the water faucet 1 (the state of FIG. 1). That is, the next time the user turns the adjuster 58, if the user suddenly discharges the ink from the hand shower, the user will be surprised. In addition, even when the spring 13 is not provided, the state can be returned to the state shown in FIG. 1 by the weight of the knob 3. However, the provision of the spring 13 can more reliably return. Conversely, when the spring 13 is not provided, the spring that has been inserted through the valve port with the conventional water faucet becomes unnecessary, so that the area of the valve port 7 can be increased, and the discharge amount of the water faucet 1 can be reduced. There is an effect that it can be large.

[0022]

As described above, according to the present invention, when the valve shaft is operated in the upward direction, the water from the water supply source is hand showered.
A spout provided with a switching valve for discharging water from a water supply source from a discharge port when the valve shaft is operated in a downward direction, wherein the valve shaft communicates with the discharge port. and the upper side of the main valve for opening and closing the valve port, and the lower valve of the lower sliding watertight along the wall surface of the air chamber the air hole is opened at the lower end communicating is mounted coaxially to the atmosphere, the Valve stem
When operated upward, the main valve is positioned below the valve port .
To close the valve port, and the lower valve
When the end face is closed , the valve shaft is operated downward.
The valve opening is opened and water from the water supply source passes through the valve opening
In the state of being discharged from the discharge port, the lower valve is empty.
The air in the air chamber is exhausted from the air holes and the air holes are closed,
The pressure of the water that has entered the air chamber is
The main valve is applied almost equally to the main valve from below.
The water pressure from above acts as effective water pressure and the main valve is open.
By keeping the area of the upper surface of the lower valve slightly smaller than the area of the upper surface of the main valve so that the state is maintained , the valve shaft of the switching valve is operated in the downward direction, and the water from the water supply source is discharged. In the state where the water is discharged from the discharge port through the mouth, when the water pressure applied to the faucet is higher than a predetermined value, the water pressure applied to the upper surface of the main valve becomes higher, and the valve shaft of the switching valve becomes Since the switching valve is strongly urged downward, the switching valve is prevented from being switched to the hand shower side. On the other hand, when the water pressure is lower than a predetermined value, the switching to the hand shower side can be performed. There is an effect that the shower hose can be prevented from violently moving at a high water pressure.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a switching valve of a faucet.

FIG. 2 is a cross-sectional view showing a state where the switching valve of FIG. 1 is switched.

FIG. 3 is a diagram of a water supply system of a bathroom;

FIG. 4 is a cross-sectional view showing a configuration of a conventional water faucet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Faucet 2 Switching valve 3 Knob 4 Valve shaft 5 Down valve 6 Main valve 7 Valve port 8 Partition wall 10 Air hole 11 Air chamber

Claims (1)

(57) [Claims] When the valve shaft is operated upward, water from a water supply source is jetted from a hand shower, while when the valve shaft is operated downward, water from a water supply source is discharged from a discharge port. a water discharge plug having a switch valve which, in the valve shaft, air chamber and the upper side of the main valve for opening and closing the valve port communicating with the discharge port, the air hole communicating with the atmosphere are opened to the lower end When the lower valve that slides water-tightly along the wall of the lower valve is mounted coaxially and the valve shaft is operated upward,
The main valve is in contact with the lower surface of the valve port and the valve port is closed,
While the upper end surface of the air chamber is closed by the lower valve ,
The valve shaft is operated downward, and the valve port is opened to supply water.
Water from the source is being discharged from the discharge port through the valve port
In this state, the air in the air chamber is discharged from the air hole by the lower valve.
The air vent is closed and the pressure of the water entering the air chamber is reduced.
From above the lower valve and from below the main valve.
And the water pressure from above the main valve is equal to the effective water pressure.
And as open state of the main valve acts is held, the water discharge plug, characterized in that the area of the upper surface of the <br/> lower valve was slightly smaller than the area of the upper surface of the main valve.