JP2517366Y2 - Spray / foam switching spout - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a spout which is attached to the tip of a spout of a faucet, a shower head, or the like and which can switch the water supply to spray or foam.

[Conventional technology]

2. Description of the Related Art Conventionally, shower heads, ordinary faucets, and the like have been used in which water is supplied in the form of foam, sprayed in several streams, or spouted.

FIG. 5 is a schematic view showing a typical example of a water discharge head having a foam / spray switching function.

In the figure, a sprinkler plate 51 having a large number of holes 51a is attached to a discharge end of a water discharge head 50 such as a spout of a faucet or a main body of a shower head, and a switching plate 52 for switching a water discharge mode is rotatably incorporated. Has been. This switching plate 52, the operation tube 53 is screwed to the water discharge head 50,
By rotating this, it switches to foam or spray water discharge.

The switching plate 52, as shown in FIG. 6, has a spray hole 52.
A foaming hole 52b accommodating a and a mesh 52c for foaming is opened. These spray holes 52a and foam holes 5
2b has a large diameter on the outside and a small diameter on the inside, and is evenly arranged on a double circle, and has a common inner diameter for each large diameter and each small diameter. And in the example shown, the switching plate 52 is placed around its center.
By rotating 45 °, it is possible to switch to the spray or foam side. In addition, the sprinkling plate 51 on the side of the water discharge head 50
Hole 51a is arranged so as to have the same arrangement as the spray hole 52a when the switching plate 52 in FIG. 6 is in the posture, and the switching plate 52 is arranged in the clockwise or counterclockwise direction in FIG.
By rotating by °, the spray water is obtained by aligning the spray hole 52a with the hole 51a.

[Problems to be solved by the device]

However, in the case of spray water discharge and foam water discharge, the conditions of water discharge suitable for each are not generally the same.

For example, in the case of foam spouting, the mesh 52c of the foam hole 52b
Since bubbles are formed while passing through and discharging, it is preferable that the flow velocity of the water passing through the bubble hole 52b is high in order to discharge water containing sufficient bubbles. Therefore, when setting a standard for foam spouting, foaming is promoted by setting a large flow rate, but when switching to spray spouting, there is no net in the spray holes 52a, so water with too strong water force It will be released. Therefore, although it is suitable for foam spouting, spray spouting causes excessive stimulation when taking a shower, and it is necessary to re-adjust the flow rate.

Further, in the flow rate setting based on the spray water discharge, when switching to the foam water discharge, the flow velocity of the water passing through the foam hole 52b is insufficient and foam formation is not promoted, and the operation for increasing the flow rate is also required. is there.

As described above, in the conventional structure, in order to perform both the spray and the foamed water satisfactorily, it is necessary to adjust the flow rate on the side of the water discharge head 50 so as to have a flow rate suitable for each, which is a problem in terms of usability. There is.

Therefore, it is an object of the present invention to improve the usability and comfortably by setting the flow rates suitable for the spray mode and the foam mode at the same time.

[Means for solving the problem]

The present invention comprises a sprinkler plate provided on the spouting end side of a water spout head and having a plurality of holes, and switching means for switching a flow path following the holes of the sprinkler plate for spraying and foaming. Is capable of forming a flow path up to the discharge end by selectively communicating with the holes formed in the sprinkler plate by changing the position or the posture thereof, and the total flow path area for foam is the same as that for spraying. It is characterized in that it is smaller than.

In such a configuration, it is possible to provide, in the foam passage provided in the switching means, a foam formation promoting means that interferes with the flow and promotes foam formation.

[Action]

When the switching means is moved to align the spray flow path with the hole of the water spray plate, the water from the water discharge head is sprayed. Further, when the switching means is moved to match the flow path for foam with the hole of the water spray plate, the spouted water is foamed and spouted.

When switching the water discharge, if the flow rate of the water supply from the upstream is kept constant and set to a flow rate suitable for spray water discharge, for example, the total flow passage area of the foam flow passage is that of the spray flow passage. Since it is smaller than this and is narrowed down, the flow velocity of the water supply passing through the flow path for foaming is higher than that in the case of spray water discharge. For this reason, it is possible to perform spray water discharge at the same time, and at the same time, it is possible to discharge foam water from the foam flow path under conditions suitable for foaming, and comfortable water discharge can be performed simply by switching operation without adjusting the flow rate. The condition is obtained.

Also. When the foaming flow passage of the switching means is provided with the foaming promoting means, the foaming rate can be further increased by the flow interference because the water supply flow is fast when switching to foaming.

〔Example〕

1 and 2 are schematic vertical cross-sectional views showing a main part of a water discharge port of the present invention, showing a state set to spray and foam water discharge, respectively.

In the figure, as in the conventional example, a sprinkler plate 2 having a large number of holes 2a, 2b is fixed to the discharge end of a water discharge head 1 such as a shower head or a faucet. An operation cap 3 is rotatably attached to the tip of the water discharge head 1 by a screw 1a, and a spray / foam switching plate 4 is housed in the operation cap 3 as switching means.

The water sprinkling plate 2 is fixed to the water discharge head 1 and has holes 2a and 2b arranged in a cross shape as shown in FIG. 3 (b). Of these, the four holes 2a close to the center serve as flow paths in both cases of foaming and spraying, and the four holes 2b arranged on the outside serve as flow paths only when spraying water.

On the other hand, in the switching plate 4, as shown in FIG. 3 (a), the spray holes 4a and 4b are formed as flow paths for spraying, and the foam 4d for foaming is provided as foam promoting means. The use hole 4c is provided as a flow path for foam. The large-diameter spray holes 4a are arranged so as to be aligned with the holes 2b of the water spray plate 2, and when these are aligned, the small-diameter spray holes 4b are also aligned with the four holes 2a of the water spray plate 2. ing.

That is, when spraying water, all the holes 2a, 2b of the sprinkling plate 2 are spray holes 4a, 4b of the switching plate 4, respectively.
And is discharged from these spray holes 4a, 4b. Further, when the switching plate 4 is rotated by 45 ° in the clockwise direction or the counterclockwise direction in FIG.
Other holes for spraying that are aligned with the four holes 2a
Both 4a and 4b are set at positions apart from the holes 2a and 2b.
For this reason, when the foam water is discharged, only the hole 2a of the water spray plate 2 serves as a flow path, and the flow path of the outer hole 2b is blocked by the switching plate 4.

A partition plate 5 is integrated with the lower surface of the water sprinkling plate 2 as shown in FIG. 3 (b). The partition plate 5 is arranged to extend radially from the center of the sprinkler plate 2 so that the lower surface of the partition plate 5 approaches the upper surface of the switching plate 4 so that bubbles and spray water can be separated. When combined with the switching plate 5, the arrangement shown by the alternate long and short dash line in FIG. 3 (a) is provided, and the spray holes 4a, 4b and the foam hole 4c can be separated. By providing such a partition plate 5, it is possible to send water to the desired spray holes 4a, 4b or foam hole 4c, respectively, using the water supply from the holes 2a, 2b of the sprinkler plate 2 as a guide.

The operation cap 3 has a switching plate 4 housed therein and is integrated therewith, and has spray holes 4a and 4b and a foam hole 4 on its lower surface.
The discharge hole 3a is opened according to c. Since the screw 1a is joined to the water discharge head 1, it is possible to switch between the spray side and the foam side by rotating the operation cap 3. Although not shown, it is needless to say that a seal packing is provided on the joint surface between the water discharge head 1 and the operation cap 3 to prevent water from leaking.

In the above configuration, when spraying water, the flow paths are aligned as shown in FIG. That is, this is a state in which the switching plate 4 of FIG. 3 (a) is directly superposed on the water spray plate 2 of FIG. 3 (b), and as described above, all the holes 2a, 2b of the water spray plate 2 are provided. Are aligned with the spray holes 4a, 4b, and a total of eight water discharge flows are discharged as shown in FIG. 4 (a). At this time, the holes 2a and 2b and the spray holes 4a and 4b are separated from the foam hole 4c side by the partition wall 5, and the spray holes 4a and 4b are separated.
Water is discharged only from a and 4b.

To switch from the spray water discharge to the foam water discharge, it is sufficient to hang the fingertip on the operation cap 3 and rotate it.
At this time, when the rotation direction of the operation cap 3 is switched to the foam side, the upper surface of the switching plate 4 and the lower surface of the sprinkler plate 2 are moved so as to approach each other. That is, the rotation operation direction of the operation cap 3 is determined so that the switching plate 4 is raised when the foam water is discharged and is lowered when the spray water is discharged. Then, when the switching plate 4 is completely rotated, if the switching plate 4 in the posture shown in FIG. 3A is rotated by 45 ° in the clockwise or counterclockwise direction,
As shown in FIG. 2, the foam hole 4c is aligned with the four holes 4a, and the spray holes 2a and 4b are covered with the water spray plate 2 with a gap. As described above, since only the four foam holes 4c communicate with the flow path on the side of the water discharge head 1 when the foam water is discharged, the flow velocity of the water supplied from the holes 2a is increased and the internal flow between the switch plate 4 and The road is decompressed. As a result, spray holes
Air is sucked inside from 4a, 4b and mixed into the water supply,
As shown in FIG. 4 (b), four bubbles are discharged and discharged. Even in this case, the water from the holes 2a and 2b is discharged by the partition wall 5 only from the foam hole 4c.

Instead of the partition wall 5, a total of eight circular protrusions 6a and 6b may be provided as shown in FIG. The large diameter projection 6a closes the spray hole 4a and the small diameter projection 6b.
Is arranged to close the spray hole 4b and the foam hole 4c. Therefore, when the one shown in FIG. 3 is directly stacked on the switching plate 4 in the same figure, all the foam holes 4c are closed and only the spray holes 4a and 4b are opened. Further, when rotated by 45 °, conversely, only the foam hole 4c is opened, and the spray and the foam can be separately discharged.

Here, when spray water is discharged, a total of eight spray holes 4a and 4b are discharged, and in the case of foam water discharge, four spray holes 4c, which are smaller than this, are discharged. For this reason,
Even if the flow rate from the water spouting head 1 is set according to the spray spouting water, when switching to foam spouting water, the total flow path area is reduced and the flow path is substantially throttled, so each foaming hole 4c
The flow velocity of the water passing through is large. Therefore, foaming is promoted when passing through the net 4d, and it is possible to obtain spouted water sufficiently containing foam. And even after switching from the foam spout to the spray spout again, the setting of the flow rate is not changed at all, so that the spray spout can be as comfortable as when it was first used.

In this way, when switching between foam spouting and spray spouting, you can obtain the optimum water discharge for each application without changing the flow rate setting at all, and when you feel pain when using it as a shower or when using a faucet But you can control the water splash.

[Effect of device]

According to the present invention, when switching between the spray water discharge and the foam water discharge by the switching means, it is possible to obtain the optimum water discharge for the spray and the foam water without changing the setting of the flow rate, and it can be used comfortably. At the same time, usability is greatly improved. Further, since the switching can be performed only by moving the switching means, it is not necessary to separately provide a flow rate adjusting valve, and the equipment itself can be simple.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of the main part when the water discharge port of the present invention is set to the spray side, FIG. 2 is a vertical cross-sectional view of the main part when the water discharge port is set to the foam water discharge side, and FIG. FIG. 3 (b) is a plan view showing the arrangement of holes for spraying and foaming which are opened in the window.
Is a plan view showing an array of holes to be formed in the water sprinkler, FIG. 4 (a)
Is an exploded perspective view showing the state of spray water discharge, FIG. 4 (b)
FIG. 5 is an exploded perspective view showing a state of foam spouting, FIG. 5 is a schematic sectional view of a conventional structure, and FIG. 6 is a plan view of the switching plate of FIG. 1: Water discharge head, 1a: Screw 2: Sprinkler plate, 2a, 2b: Hole 3: Operation cap, 3a: Hole 4: Switching plate (switching means) 4a, 4b: Spray hole (spray passage) 4c: Foam hole (flow path for foam) 4d: Mesh 5: Partition wall, 6a, 6b: Protrusion

Claims (2)

(57) [Scope of utility model registration request] 1. A water sprinkler plate provided on the discharge end side of a water spout head and having a plurality of holes, and switching means for switching a flow path following the holes of the water sprinkler plate between spray and foam. The means can selectively form a flow path to the discharge end by selectively communicating with the holes formed in the water spray plate by an operation of changing the position or the posture, and the entire flow path area for foam can be used for spraying. A spray / foam switching spout that is smaller than that. 2. A spray / foam switching spout characterized in that a foaming promoting means for interfering with the flow and promoting foaming is provided in a foaming channel provided in the switching means.