JP2528371Y2 - Foamed shower head - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower head that is also used for spouting water.

[0002]

2. Description of the Related Art Generally, a shower head for washing hair etc. is used in a bathroom or a lavatory, etc., and a shower head is used which also serves as an axial flow spout such as a normal faucet spout. The switching operation of the shower head is simplified by one-touch operation. The following proposal has been made for such a shower head (Japanese Utility Model Laid-Open No. 4-99).
No. 245).

This will be described with reference to FIGS. 2 and 3. FIG. 3 is a view from the back side of FIG.
The left side is an external view, and the right side is a partial sectional view. Reference numeral 1 denotes a synthetic resin shower head main body, which is integrally formed of a cylindrical grip portion 1a and a hemispherical head portion 1b. A sprinkling plate body 2 made of synthetic resin is screwed to the cut front side (water spouting side) end surface of the hemispherical head 1b, and a support body 3 is built inside the sprinkling plate body 2. Have been.

[0004] These watering plate body 2 and support body 3
A cylinder valve 4 is mounted on the shaft of the cylinder 1. The cylinder valve 4 is supported by a support body 3 and a bearing 5 of the shower head main body 1. This cylinder valve 4 is
The valve can be switched by reciprocating by a seesaw-like operation of an operation lever 6 provided on the back side (non-front side) of the hemispherical head 1b.

[0005] In the center of the watering plate body 2, about 15
A faucet spout 7 mm in diameter is opened, and a large number of shower spray ports 8 are opened in the vicinity thereof.
Therefore, if the operation lever 6 is pushed in a seesaw shape from the outer surface of the flexible plastic operation cap 18 with a fingertip,
The cylinder valve 4 reciprocates and is switched between the shower A (see FIG. 1) and the water discharge flow B.

[0006] The cylindrical gripping portion 1 of the shower head body 1
A main flow path 9 for introducing hot and cold water is provided through the shaft core of a. The main flow path 9 is provided in a donut-shaped flow path 10 surrounding the outer periphery of the bearing portion 5 provided in the hemispherical head 1b. Communicating.

The large diameter portion 2a of the watering plate 2 is screwed to the hemispherical head 1b. In addition, three wire nets 12 are inserted into the faucet spout 7 at the small diameter portion of the sprinkling plate body 2 to form a strainer.

A plurality of communication holes 13 are opened in the axial direction of the support body 3 in the axial direction. The communication hole 13 communicates with the shower spray port 8 and also communicates with the donut-shaped flow path 10. A notch step 17 into which the O-ring packing 14 is fitted is provided on the base side of the support body 3. Reference numeral 20 denotes an operation lever chamber of the operation lever 6.

[0009] By the way, such a shower head combined with water discharge is extremely compact, but has a problem that it has no foam function.

[0010] In addition, with a shower head combining a spouting water flow and a shower flow, outside air is suctioned from a shower spray port,
Proposals for changing water discharge into a foam flow are known (for example, Japanese Utility Model Laid-Open No. 49-145935 and Japanese Utility Model Laid-Open No. 49-13).
No. 9136).

[0011] However, in the proposed shower head, since the top valve is used, the outside air sucked from the shower spray port is mixed into the deeper part of the water discharge flow, and the outside air suction force is reduced. In addition, there is a problem that the spouting water flow is divided and flows to the spraying port for shower, and the suction force of the outside air is further reduced, so that a fine foam flow due to the outside air cannot be formed.

[0012]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve such a problem, and the gist of the present invention is to provide a grip portion 1a having a main flow path 9 for introducing hot and cold water at an axis thereof, Hemispherical head 16 provided integrally with the gripper 1a
And a shower head main body 1 made of synthetic resin, the main flow passage 9 being provided on the cut front side of the head 16.
By providing a faucet spout 7 having a strainer composed of a plurality of wire meshes 12 through a cylinder valve 21 that reciprocates in a direction substantially orthogonal to water, hot water passes through the cylinder of the cylinder valve 21 to the spout 7. The shower head 8 is provided with a large number of shower spray ports 8 around the water discharge port 7, and the cylinder valve 21 is operated by a seesaw-shaped operation lever 6 provided on the back side of the shower head main body 1. In the shower head, it moves integrally with the cylinder valve 21 on the base side outer periphery of the cylinder valve 21 to switch between the shower flow A and the water discharge flow B, and when the discharge water flow is formed, the external air flow C is generated. A first gasket 14 for blocking flow into the base side of the cylinder valve 21;
Moves integrally with the cylinder valve 21 to the outer periphery of the tip 21b on the tip end side, and when the shower flow is formed, the water discharge flow B and the shower flow A
And a second packing 25 for shutting off the water discharge flow on the outer periphery of the cylinder valve 21 on the side of the leading end 21b.
A slit-shaped air passage 24 for sucking outside air from the shower spray port 8 is provided, and the cylinder valve 21 is connected to the wire mesh 1.
The airflow C sucked when approaching to the nozzle 2 flows over the outer periphery of the second packing 25 from the outer peripheral end of the cylinder valve 21 into the water discharge flow B for discharging water from the inside of the cylinder valve 21 to perform foam water discharge. The present invention is directed to a shower head combined with a foam-like water discharge.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. FIG. 1 is an explanatory sectional view of an embodiment of the present invention, and FIG.
1, the upper part of the center line a in FIG. 1 shows the shower flow A, and the lower part of the figure shows the water discharge stream B. The same parts as those in FIG.
The description of the common parts is omitted.

In FIG. 1, a cylinder valve 21 incorporated in a shower head body 1 having a total length of about 95 mm and a radius of about 25 mm of a hemispherical head 1b has a solid base 21a,
It is integrally formed of a synthetic resin comprising the cylindrical tip 21b. A plurality of communication holes 22 are opened in the solid base 21a in the radial direction. The notch step portion 23 into which the O-ring packing 14 (also referred to as a first packing) fits in the bearing portion 5 of the shower head main body 1.
Is provided. Therefore, the O-ring packing 14 performs reciprocating motion between the notch step 17 of the support body 3 and the notch step 23 of the bearing unit 5 integrally with the cylinder valve 21 to perform valve switching.

Here, the following slit-shaped air passage 24 is formed between the support body 3 and the cylinder valve 21. That is, the O-ring packing 14 is provided on the base side of the cylindrical tip portion 21b of the cylinder valve 21.
Is fitted and held, and the faucet spout 7 is provided on the tip 21b side.
A rubber ring 25 (also referred to as a second packing) that opens and closes is fitted and held.

The O-ring packing 14 and the rubber ring 2
5, the O-ring packing 14 is provided with a solid base 21a of the cylinder valve 21.
Side, the shower flow A and the water discharge flow B are switched, and when the discharge flow is formed, the external air flow C is supplied to the cylinder valve 21.
Of the wire mesh 12 so as not to be mixed on the solid base 21a side.
To be mixed when approached. Therefore, the external air flow C is sucked with a strong force, and becomes a finer foam flow by the foam due to the wire mesh 12 and the foam due to a large amount of outside air. In particular, since the outside air mixes into the water discharge stream B dispersed by the wire mesh 12 in the middle of the three wire meshes 12, it becomes a finer foam flow. Further, the rubber ring 25 blocks the water discharge flow B and the shower flow A when forming the shower flow A. Therefore, when the shower flow is formed, no water is discharged at all, and a strong shower flow A can be formed.

On the other hand, the support body 3 is provided with the communication hole 13.
Subsequent to (see FIG. 2), a valve seat portion 26 to be sealed by the rubber ring 25 is formed, and the air passage 24 is formed in the axial direction following the valve seat portion 26.

Therefore, when the cylinder valve 21 is located above the center line a in FIG. 1, the rubber ring 25 is sealed by the valve seat portion 26 to form a shower flow A, and the cylinder valve 21 is positioned in FIG. When the rubber ring 25 is located below the center line a, the rubber ring 25 separates from the valve seat portion 26 and the air passage 2
4 and the O-ring packing 14 is separated from the notch step 23, so that the water discharge flow B is formed.

When the water discharge flow B is formed, the air passage 2
4, a negative pressure is generated, and the outside air is sucked from the shower spray port 8 in the direction C and mixed with the water discharge stream B to form a foam discharge stream. Therefore, foamy axial flow spouting is obtained. Note that the air passage 24 may be formed on the cylinder valve 21 side.

[0020]

According to the present invention, in a very compact shower head that also serves as an axial-flow water spout, the outside air is sucked from the shower spray port 8, so that the scale-up of the shower head main body 1 can be suppressed. Therefore, foam water can be discharged without reducing the water discharge amount while maintaining the opening diameter of the faucet water discharge port 7 without deteriorating the compactness of the conventional one. In addition, the outside air is sucked from the spraying port 8 for the shower, and the water is discharged to the water discharge flow B at a position close to the wire net 12 of the water discharge port 7 through the slit-shaped air passage 24 provided on the outer periphery of the tip portion 21b side of the cylinder valve 21. Since it is mixed, the flow direction of the sucked outside air flow C and the flow direction of the discharged water flow B are the same,
Since the water discharge B does not impede the flow of the external air flow C and does not enter the slit-shaped air passage 24, the negative pressure becomes large and a large amount of external air can be mixed with the large amount of the water discharge B as described above. A very fine foam flow can be produced in large quantities in combination with the formation of the water discharge flow. When the cylinder valve 21 approaches a strainer composed of a plurality of wire meshes 12, an external air flow C flows from the outer peripheral end of the cylinder valve 21.
The outside air is directly mixed into the water discharge flow in the wire mesh finely dispersed by the wire mesh 12 and a fine foam flow can be formed. That is, if outside air is mixed into the discharged water flow in a place where the space is large, the mixing is not uniform and tends to be an intermittent foam flow, but such a phenomenon can be prevented. Since water is discharged orthogonally to the hot water introduction direction, only one strainer is required. That is, in general, the foam flow requires two stages of the base strainer and the outlet strainer, and since it has a structure in which outside air is mixed in a wide space between these strainers, the outlet strainer (the wire mesh 12 of the present invention) is required. (Equivalent) has a drawback that if any clogging occurs, the outside air is not immediately sucked, but the present invention does not have such a drawback.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of a conventional example.

FIG. 3 is a plan view of FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shower head main body, 1a ... Cylindrical grip part, 1b ... Hemispherical head, 4 ... Cylinder valve, 6 ... Operation lever, 7 ... Faucet spout, 8 ... Shower spray port, 9 ... Main flow path, 24 …
Air passage

Claims (1)

(57) [Scope of request for utility model registration] 1. A a gripping portion 1a having a main flow path 9 for introducing the hot water in the shaft, hemispherical head which is provided integrally with the grip portion 1a
16, a synthetic resin shower head body 1 made of, to cut the front side of the head 16, the main channel
A water outlet 7 for a faucet having a strainer composed of a plurality of wire meshes 12 through a cylinder valve 21 that reciprocates substantially orthogonally to the water outlet 9.
By providing, with hot water to flow through the cylinder of the cylinder valve 21 to the spout 7, a number of shower spray nozzle 8 provided around the said discharge Mizuguchi 7, the cylinder valve 21, In the shower head operated by a seesaw-shaped operation lever 6 provided on the back side of the shower head main body 1, the cylinder valve 21 is provided on an outer periphery of a base side of the cylinder valve 21.
Move together with, and switching operation in the shower flow A and the water discharge flow B, and, when the water discharge flow formed, the cylinder fresh air flow C
First packing for blocking flow into the base side of valve 21
14 , on the outer periphery of the cylinder valve 21 on the tip portion 21b side,
Move together with the cylinder valve 21, when the shower flow formed, provided with a second packing 25 for blocking the water discharge flow B and shower flow A, front portion 21 of the cylinder valve 21
On the outer periphery on the side b , the spraying port 8 for shower
A slit-shaped air passage 24 for sucking outside air from
Suction when the cylinder valve 21 approaches the wire mesh 12
Outside air flow C passes over the outer periphery of the second packing 25.
From the outer peripheral end of the cylinder valve 21 to the inside of the cylinder valve 21
A shower head that also mixes with a spouting water stream B that discharges water to perform foam spouting.