JPH0820981A - Faucet - Google Patents

Abstract

PURPOSE:To prevent a shower hose from moving violently by inhibiting the hose shower from being switched over to a hand shower in a high hydraulic pressure and enabling the shower hose to be changed over to the hand shower in a low hydraulic pressure. CONSTITUTION:A main valve 6 which opens a valve port 7 communicating with an outlet 7A and a lower valve 5 sliding in water tight along a wall surface of an air chamber 11 to which an air port 10 communicating with the air is opened are coaxially mounted to a faucet 1. The area of this lower valve 5 is designed to be slightly smaller than that of the main valve 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a faucet equipped in a bath room of a hotel, and more specifically, when the switching valve is pushed down, water and hot water are discharged from the faucet, while the switching valve is pulled up. The present invention relates to a spigot in which water and warm water are jetted from a hand shower.

[0002]

2. Description of the Related Art Conventionally, a hotel bath room is 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 the lower portion of the wall surface 52 of the bath room 51, and a hand shower 54 is provided to the upper portion of the wall surface 52. A latch member 55 for latching is attached. A shower water supply tool 56 for supplying hot water and water to the hand shower 54 is attached to the center of the wall surface 52. The shower water supply tool 56 has a shower hose 57. Are connected.

On the other hand, the shower water supply tool 56 and the spout 53
In between, the temperature of the mixed hot water (mixed hot water and cold water) discharged from the water discharge plug 53 and the hand shower 54,
An adjuster 58 for adjusting water pressure and the like is provided. A mixing portion 59 to which hot water and a water pipe (not shown) are connected is provided on the outside of the wall surface 52 of the bath room 51, and the controller 58 is linked with the mixing portion 59. The temperature and water pressure of the mixed hot water discharged from the spout 53 and the hand shower 54 are adjusted.

A pipe 60 connected to the mixing section 59 is connected to the water discharge plug 53, and a pipe 61 is connected to the shower water supply tool 56. The mixed hot water mixed in the mixing part 59 is discharged from the water discharge port 53A of the water discharge tap 53 when the switching valve 62 mounted on the water discharge tap 53 is in the depressed position (the state shown in FIG. 3). On the other hand, the switching valve 62
Is in a pulled-up position (not shown), the valve port for the water outlet 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 used for the faucet 5
It is provided at the base end portion of 3. A circular knob 63 is attached to the upper portion of the switching valve 62, and a valve shaft 64 is attached to the center of the knob 63 so as to be vertically movable (pulled up and down). A start valve 65 is arranged at the tip of the valve shaft 64, and a main valve 66 is provided coaxially with the start valve 65.

The valve shaft 64 is inserted, and a valve opening 67 opened and closed by the main valve 66 as the valve shaft 64 moves vertically is opened in the partition wall 68. Knob 6
3 is pushed down, the valve shaft 64 is lowered, and the valve port 67 is opened, the mixed hot water from the pipe 60 connected to the base end of the water discharge plug 53 passes through the valve port 67, and the water discharge port is discharged. 53A
Is discharged from. On the other hand, when the knob 63 is pulled up and the valve shaft 64 is moved upward, the main valve 66 causes the valve port 67 to move.
Will be closed. As a result, the mixed hot water mixed in the mixing section 59 passes through the pipe 61 and flows into the shower water supply tool 5.
6. Discharge from the hand shower 54 through the shower hose 57. The spring 6 is provided outside the valve shaft 64.
9 is elastically attached between the main valve 66 and the inner ceiling surface of the water discharge plug 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 water outlet 53 of the water outlet 53 is discharged.
When the mixed hot water is being discharged from A, when the switching operation is performed to inject the mixed hot water from the hand shower 54, the knob 63 is pulled up. At this time, the knob 63 is slightly pulled up, and the start valve chamber 6 in which the start valve 65 is located
Since the water pressure of the mixed hot water is applied to 5A, the starting valve 65 receives the pushing-up force and biases the valve shaft 64 in the upward direction, so that the lifting operation of the knob 63 is lightened.

[0008]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When the switching valve 62 attached to the hand is switched to the hand shower 54 side when the flow rate of the mixed hot water discharged from the water discharge port 53A is high, that is, when the water pressure is high, the knob 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 sprayed from the hand shower 54. In addition, since the water pressure applied to the faucet 53 is generally high in a hotel, when a mixed hot water is being discharged from the spout 53A, a slight gap is created between the main valve 66 and the start valve chamber 65A due to vibration or the like. A high water pressure is applied to the start valve chamber 65A, and the start valve 65 and the main valve 66 are lifted by the pushing force, and suddenly switch to the hand shower 54 side, and the shower hose 57 moves violently. I have a problem.

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 switching to the hand shower side, so that the hand shower
The problem to be solved is to prevent the shower hose from moving violently under high water pressure.

[0010]

According to the present invention, in order to solve the above problems, when the valve shaft is operated in the upward direction, water from the water supply source is injected from the hand shower while the valve shaft is in the downward direction. A discharge valve having a switching valve that discharges water from a water supply source from a discharge port when operated, a main valve that opens and closes a valve port that communicates with the discharge port on the valve shaft, and communicates with the atmosphere. A lower valve, which slides in a watertight manner along the wall surface of the air chamber in which the air holes are opened, is coaxially mounted, and the area of the lower valve is made slightly smaller than the area of the main valve. .

[0011]

According to the faucet having the above-described structure, when the valve shaft of the switching valve is operated downward and the 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 the upper side to the lower valve and from the lower side to the main valve. Are approximately equal and opposite in direction. 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.Therefore, the main valve remains open and the water from the water supply source is discharged through the valve opening. Is discharged from. At this time, the larger the water pressure from the water supply source, the stronger the effective water pressure to the main valve, and the larger the force required to pull up the valve shaft. Is suppressed, and the shower hose of the hand shower is prevented from moving violently under high water pressure.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. As described in the section of the prior art, a hotel or the like is provided with a spout and a hand shower as shown in FIG. 3, and the spout is mixed with hot water and cold water from a water supply source by mixing. A switching valve that is operated when the mixed hot water is jetted from the spout or hand shower is attached.

FIG. 1 is a cross-sectional view showing the structure of the switching valve 2 of the faucet 1. The circular knob 3 of the switching valve 2 is pushed down and supplied from a mixing device (not shown). The mixed hot water is in a state of being discharged from the discharge port 7A through the valve port 7 opened in the partition wall 8. On the other hand, in FIG.
Cross section in which the knob 3 of the switching valve 2 is pulled up, the valve opening 7 opened in the partition wall 8 is closed by the main valve 6, and the mixed hot water is jetted from a hand shower (not shown). It is a figure.

As shown in FIG. 1, a valve shaft 4 is attached to the center of a knob 3 of the switching valve 2 so as to be vertically slidable. A disc-shaped lower valve 5 is arranged 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 spout 1
A 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 O ring) 5A fitted on the outer peripheral surface slides in a watertight manner along the wall surface of the air chamber 11. To do.

The mixed hot water supplied from a mixing device (not shown) is supplied to the spout 1 and is discharged through the valve port 7 to the discharge port 7.
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 through the gap between the upper surface of the lower valve 5 and the lower surface of the main valve 6 as indicated by arrow P1 and the upper surface of the lower valve 5 as indicated by arrow P2. Applied to. Water pressure P1 applied to the lower surface of the main valve 6
Then, since the water pressure P2 applied to the upper surface of the lower valve 5 is approximately equal in size and opposite in direction, the water pressure in the vertical direction 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 arrow P3. As mentioned above, the air chamber 11
Since the water pressure in the vertical direction inside is canceled out, only the water pressure P3 becomes an effective water pressure in the vertical direction and presses the main valve 6 downward. This water pressure P3 is proportional to the water pressure of the mixed hot water supplied to the faucet 1 from the outside, so that 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 pull up the knob 3 to switch the switching valve 2 to the hand shower side, and the switching valve 2 cannot be switched unless the water pressure is low. At the time of switching, the problem that the shower hose of the hand shower moves violently due to high water pressure is solved.

In FIG. 2, 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 spout 1
The mixed hot water discharged from is stopped and is sprayed from a hand shower (not shown). In the state shown in FIG. 2, the lower valve 5 closes the upper end surface of the air chamber 11 and the main valve 6 closes the valve port 7.

In the above state, the water pressure P4 of the mixed hot water is controlled by the main valve 6
The water pressure P5 of the mixed hot water is applied to the lower valve 5. In this water pressure applied state, the water pressure P4 and the water pressure P5 have opposite directions, and since the lower area of the main valve 6 is slightly larger than the upper area of the lower valve 5, the water pressure P4 and the water pressure P
A water 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, even if the pressure of the mixed hot water is relatively large, it is applied to the lower surface of the main valve 6. 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 pushed down with a comparatively light force, which facilitates switching.

A spring 13 may be disposed on the outer periphery of the valve shaft 4 so as to abut against the upper surface of the main valve 6, and when the spring 13 is provided, the hand shower in the state shown in FIG. When water is stopped by operating the adjuster 58 after using −, the main valve 6 is automatically lowered and the discharge state of the water discharge tap 1 (state of FIG. 1) can be restored. In other words, when the person who uses it next time turns the adjuster 58, it suddenly discharges from the hand shower, so that he or she is suddenly hit, so that such a situation is to be avoided. Even if the spring 13 is not provided, the state of FIG. 1 can be restored by the weight of the knob 3, but by providing the spring 13, the return can be made more reliably. On the contrary, when the spring 13 is not provided, the spring which is inserted through the valve port in the conventional water discharge plug is unnecessary, so that the area of the valve port 7 can be increased and the discharge amount of the water discharge plug 1 can be increased. The effect is that it can be large.

[0022]

As described above, according to the present invention, when the valve shaft is operated upward, the water from the water supply source is hand-washed.
On the other hand, in the faucet equipped with a switching valve for discharging water from the water supply source from the discharge port when the valve shaft is operated downward, the valve shaft has a valve port communicating with the discharge port. A main valve that opens and closes and a lower valve that slides in a watertight manner along the wall surface of the air chamber where the air hole communicating with the atmosphere is opened are coaxially attached, and the area of this lower valve is smaller than the area of the main valve. By making it slightly smaller, the valve shaft of the switching valve is operated downward, and in the state where the water from the water supply source is being discharged from the discharge port through the valve port, the water pressure applied to the spout is at a predetermined value. When it is higher, the water pressure applied to the upper surface of the main valve becomes higher and the valve shaft of the switching valve is strongly urged downward, so that switching of the switching valve to the hand shower side is suppressed. On the other hand, when the water pressure is lower than the specified value, it can be switched to the hand shower side. Made for the hand shower - the shower - Ho - there is an effect that the scan can be prevented from moving violently at high water pressure.

[Brief description of drawings]

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

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

FIG. 3 is a water supply system diagram of a bass room.

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

[Explanation of symbols]

 1 Faucet 2 Switching valve 3 Knob 4 Valve shaft 5 Lower valve 6 Main valve 7 Valve opening 8 Partition wall 10 Air hole 11 Air chamber

Claims (1)

[Claims] 1. When the valve shaft is operated upward, water from the water supply source is jetted from the hand shower, while when the valve shaft is operated downward, water from the water supply source is discharged from the discharge port. A faucet having a switching valve for allowing the valve shaft to extend along a wall surface of an air chamber in which a main valve that opens and closes a valve port that communicates with the discharge port and an air hole that communicates with the atmosphere are opened. A faucet characterized in that a lower valve that slides in a watertight manner is coaxially attached, and the area of the lower valve is made slightly smaller than the area of the main valve.