JP2000166798A - Showerhead with water cutoff function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety valve having a simple structure with a small number of part items, for preventing water pressure in a showerhead from rising when water is cut off using the showerhead. SOLUTION: This showerhead 1 equipped with a water cutoff function whereby the discharge and cutoff of hot water can be switched through the operation of a button 18 has an inner flow passage divided into a primary flow passage 11 and a secondary flow passage 13 by a diaphragm 15 and a water cutoff valve 24 for opening and closing a water hole 17 in the diaphragm 15 to and from the secondary flow passage 13 and a spring 25 for pressing the water cutoff valve 24 toward a closed position intervene in a holding member 23 linked to the button 18. The water cutoff valve 24 and the spring 25 serve also as a safety valve which opens the water hole 17 when water pressure in the primary flow passage 11 rises to or above the set load of the spring 25 at which the water hole 17 can be closed during water cutoff.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower head having a water stop function, which can switch between hot and cold water by operating a button.

[0002]

2. Description of the Related Art Conventionally, hot and cold water spouted from a shower head can be switched between spouting and stopping water by operating a button provided on the shower head in addition to opening and closing operation with a handle of a faucet. Japanese Unexamined Patent Publication No. Hei 7-259152 discloses an example. This shower head houses a safety valve that releases pressure water in the valve chamber to the outside when the water pressure inside the valve chamber increases in the water stopped state, separately from a valve for switching the flow path between the water discharging state and the water stopping state. Thus, it is possible to prevent an excessive water pressure from being applied to the internal parts of the shower head and damaging the water when the water is stopped by the shower head.

In the above-described apparatus, a safety valve must be newly accommodated in the valve chamber of the shower head separately from the valve for switching the flow path. In addition, it has a drawback that the shower head cannot be made compact.

[0004]

The problem to be solved by the present invention is to provide a safety valve for preventing the water pressure inside the shower head from rising when the water is stopped by the shower head. It is provided by the structure.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a shower head with a water stopping function which enables switching between hot and cold water by operating a button. A water stop valve that opens and closes the water hole of the partition plate from the secondary flow path and a spring that presses the water stop valve to the closed position are interposed in the holding member that is partitioned into the flow path and the secondary flow path and that is linked to the button. The water stop valve and the spring also serve as a safety valve for opening the water passage when the water pressure in the primary flow path rises above the set load of the spring capable of closing the water passage when water is stopped.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. In this embodiment, as shown in FIG. 1, a shower head 1 is made of a synthetic resin, communicates with a faucet 2 attached to a wall surface of a bathroom or the like by a hose 4, and is supported by a holder 5. A conventionally known pressure reducing valve 6 for reducing the pressure between the hose 4 and the shower head 1 so as not to supply excessive pressure water from a water supply source or a hot water supply source is mounted. .

As shown in FIG. 2, the shower head 1 is attached to the tip of a grip 7 held by the user by screwing a head 8 via an O-ring 9 for ensuring watertightness. A sprinkling plate 10 for discharging hot water to the outside is attached to the tip of the water sprayer.

As shown in FIGS. 3 to 5, the head 8 forms an opening 12 and a secondary flow path 13 which communicate with a primary flow path 11 through which hot and cold water in the grip portion 7 passes. The passage 13 and the primary flow path 11 are vertically divided in the drawing by a cylindrical partition plate 15 fixed in the opening 12 by a fixing device 14 screwed to the inner peripheral surface of the opening 12. The seat 16 is located at a position eccentric from the center in the water flowing direction of 15.
The primary flow path 11 and the secondary flow path 13 are communicated with each other through a water passage hole 17 penetrating through the sheet 16.

Button 18 operated from both sides in a seesaw type
3 is slidably inserted into a through hole 19 formed by crossing the secondary flow path 13 of the head 8, and either one of the left and right sides in FIGS. O-rings 21 for maintaining watertightness are fitted in the annular grooves 20 at both ends in a cylindrical shape that is exposed to the side, and a holding member 23 is accommodated in a concave notch 22 that is formed so as to face the partition plate 15, A spring 25 is interposed in the inside of the holding member 23, and the spring 25 elastically presses a ball-shaped water stop valve 24 facing the partition plate 15.

The water stop valve 24 is moved in the horizontal direction on the partition plate 15 by operating the button 18, and the water stop valve 24 faces the water passage hole 17 of the seat 16 in FIG. Since the water hole 17 is closed, hot water is not supplied from the primary flow path 11 to the secondary flow path 13, and the water stop valve 24 moves together with the holding member 23 by operating the button 18 in FIG. 5. Since the water holes 17 are opened, the primary flow path 11 and the secondary flow path 13 communicate with each other, so that hot water can be discharged from the water spray plate 10 of the head 8 to the outside.

As shown in FIG. 3, when the button 18 is operated to the water stop position, the water stop valve 24 is normally seated on the seat 16 by the elastic force of the spring 25 to close the water passage hole 17, as shown in FIG. For some reason, the pressure reducing valve 6 mounted between the faucet 2 and the hose 4 fails, and the water pressure of the primary flow path 11 is set to close the water hole 17 of the spring 25 pressing the water stop valve 24. When the water is lifted so as to overcome the applied load, the water stop valve 24 rises as shown in FIG.
The hot and cold water in the primary flow path 11 is separated from the
7 is supplied to the secondary flow path 13 and drained from the sprinkling plate 10 to prevent an excessive rise in water pressure in the hose 4 and the shower head 1.

Therefore, the water stop valve 24 and the spring 25 can function as a safety valve, and the flow path of the hose 4 and the primary flow path 11 of the head 8 are maintained at a certain water pressure or lower, and the hose 4 and the shower head In this case, it is possible to prevent the internal components from being damaged or leaking due to the application of high-pressure water.

In the shower head 1 having the above-described structure, the water stop valve 24 connected to the button 18 is located at a position vertically facing the water passage hole 17 of the seat 16 and is urged downward by the elastic force of the spring 25 in FIG. Since the water passage hole 17 is closed, even if the handle 3 of the faucet 2 is operated in the water discharge direction, hot water is not supplied from the primary flow path 11 of the grip 7 to the secondary flow path 13 of the head 8. , Is in a water-stop state.

At this time, when excessive pressure water is supplied from a water supply source or a hot water supply source, it is usually supplied to the hose 4 and the shower head 1 by the pressure reducing valve 6 mounted between the faucet 2 and the hose 4. Although the pressure of the hot water is reduced, if the pressure reducing valve 6 breaks down for some reason, excessive pressure water is supplied to the hose 4 and the shower head 1 as they are. Therefore, as shown in FIG. 4, the water shutoff valve 24 closing the water hole 17 of the seat 16 has a primary force so as to overcome the biasing force of the spring 25 set in advance to close the water hole 17. When the pressure in the flow path 11 rises, hot water in the primary flow path 11 is supplied from the water passage hole 17 to the secondary flow path 13 and functions as a safety valve.
Is discharged to the outside.

Next, when the side of the button 18 protruding from the head 8 is pressed, the water stop valve 24 moves in the horizontal direction together with the holding member 23 as shown in FIG. The channel 11 and the secondary channel 13 communicate with each other through a water hole 17,
Hot water is discharged from the sprinkling plate 10 of the head 8 to the outside.

[0016]

According to the present invention, when the water is stopped by operating a button provided on the shower head, and the internal pressure of the hose connected to the faucet and the primary flow path of the shower head increases,
A water shutoff valve that opens and closes the water hole to switch between water discharge and water stop, overcomes the load set by the spring, opens the water hole, functions as a safety valve, and discharges the pressure water in the primary flow path to the outside. it can. Therefore, since the water stop valve and the spring also serve as a safety valve, there is no need to provide a safety valve separately from the water stop valve as in the related art, and the water pressure inside the hose and the shower head is increased without increasing the number of parts and assembly steps. The rise can be prevented, and the reliability can be improved.

Further, since the shower head has the function of a safety valve, there is no need to add other articles, and the shower head can be formed compactly without any change in the external shape.

[Brief description of the drawings]

FIG. 1 is a side view of a shower head connected to a faucet via a hose.

FIG. 2 is a partially sectional plan view of a shower head.

FIG. 3 is a partial cross-sectional plan view of the shower head in a water stopped state.

FIG. 4 is a partial plan sectional view of the shower head when the water pressure is increased.

FIG. 5 is a partial plan sectional view of the shower head in a water discharging state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shower head 11 Primary flow path 13 Secondary flow path 15 Partition plate 17 Water passage hole 18 Button 23 Holding member 24 Water stop valve 25 Spring

Claims (1)

[Claims] 1. A shower head with a water stopping function, which can switch hot and cold water by operating a button.
The shower head divides the internal flow path into a primary flow path and a secondary flow path by a partition plate, and a holding member connected to the button, a water stop valve that opens and closes a water hole of the partition plate from the secondary flow path, and A spring that presses the water shutoff valve to the closed position is interposed, and the water shutoff valve and the spring are connected to each other when the water pressure of the primary flow path rises above a set load of a spring capable of closing the water hole when water is stopped. A shower head with a water stop function, which also functions as a safety valve that opens a hole.