JPH08275900A - Shower head - Google Patents

Abstract

PURPOSE: To lightly and smoothly perform a switching operation. CONSTITUTION: This head is equipped with a ball valve 19 to switch a straightened water passage and a shower water passage moving on a sheet packing 18, and a hole 18b of small diameter in which the ball valve 19 opened to a straightened water passage side is fitted slightly, and a hole 18a of large diameter in which the ball valve 19 opened to a shower water passage side is fitted deeply are formed on the sheet packing 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower head.

[0002]

2. Description of the Related Art Conventionally, there has been a shower head configured to discharge rectification from the central side and discharge shower water from the outer peripheral side thereof. Although it is configured to switch, when the shower water is jetted, the internal pressure in the shower head is higher than in the case of discharging the rectified water, so the switching operation becomes heavy when switching to the rectified water after the shower water is jetted. There was a problem that it would end up.

[0003]

SUMMARY OF THE INVENTION The present invention was devised in view of the above problems of the prior art, and an object thereof is not to provide a shower head capable of reducing the operation force when switching from shower to rectification. The gist is equipped with a ball valve that moves the rectifying water channel on the central side and the shower water channel on the outside, where the internal pressure increases when running water, by switching over the seat packing.
The seat packing is formed with a small diameter hole into which the ball valve opening toward the rectifying water channel is shallowly fitted and a large diameter hole into which the ball valve opening toward the shower channel is deeply fitted. is there.

[0004]

[Function] When water is discharged to the shower channel side, the ball valve is shallowly fitted into the small diameter hole of the seat packing,
When switching to the rectifying water channel side in that state, since the ball valve is shallowly fitted in the small diameter hole, it can be lightly pulled out of the small diameter hole and moved to the large diameter hole side, and conversely to the large diameter hole. When the ball valve is fitted, it is deeply fitted, and at this time, the internal pressure in the shower head does not become as high as the difference. Therefore, even if it is deeply fitted, the ball valve can be moved with a light operating force. In other words, the operating force when moving from the small diameter hole to the large diameter hole side and the operating force when moving the ball valve from the large diameter hole to the small diameter hole side can be made almost the same, and the switching operation of the ball valve can be performed. It can be done smoothly.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a single-lever type faucet. A lever handle 2 for operation is attached to an upper part of a faucet body 1, and a water discharge pipe 3 is projected from the faucet body 1 in an inclined shape. A shower head 4 is provided at the tip of the water discharge pipe 3.

An enlarged internal structure of the shower head 4 is shown in FIG. That is, the shower head 4 is integrally formed with a barrel-shaped main body 5 whose lower side is opened to the outside to form a shaft portion 6, and the shaft portion 6 is formed on the outer circumference by an O-ring 7.
The plug is inserted into the water discharge pipe 3 and connected.

FIG. 10 is an external perspective view of the main body 5,
Further, as shown in the half cross section in the opposite direction in FIG. 9, a lateral button hole 5a for inserting the button 23 is formed on the side surface opposite to the shaft portion 6, and the inside of the lateral button hole 5a is formed. At the bottom of the inside of the main body 5, a vertical insertion hole 5b having a circular cross section is formed.
A rising arc rib 5c is integrally formed by rising in an arc shape, and a positioning rib 5d is formed at a predetermined position in the vertical direction on the inner peripheral surface of the main body 5. .

The main body 5 and the shaft portion 6 are entirely made of resin, and a sprinkler plate 8 is screwed on the lower open side of the main body 5, and inside the sprinkler plate 8. A foam net metal fitting 9 is provided, a pressure reducing plate 10 is arranged further above the metal mesh fitting 9, a strainer 15 is further arranged above it, a plate 16 is further arranged above it, and a ball is further arranged above it. A valve case 20 accommodating the valve 19 is arranged, and a shaft portion 20c of the valve case 20 is provided with the insertion vertical hole 5
It is rotatably fitted in b.

FIG. 3 shows an exploded perspective view of each component.
Further, FIG. 4 shows an exploded perspective configuration diagram in the opposite direction. First, the structure of the water spray plate 8 will be described. An inner screw 8a is formed on the inner peripheral surface of the water spray plate 8, and the inner screw 8a is screwed onto the outer circumference of the main body 5. A central hole 8b is formed in the central portion of the water sprinkling plate 8 in a penetrating manner, and 10 positioning concave grooves 8c, 8c, 8c are vertically recessed at predetermined intervals on the inner peripheral surface of the central hole 8b. The storage recessed portion 8e is formed on the outer side of the storage recessed portion 8e by being recessed downward. Ten water sprinkling holes 8d, 8d are formed at predetermined intervals on the bottom side of the storage recessed portion 8e. , 8d are formed so as to penetrate therethrough. The number of the water spray holes 8d and the number of the positioning recessed grooves 8c are the same, and each positioning recessed groove 8c is formed at a position aligned with each of the water spray holes 8d.

Next, three foam mesh fittings installed inside the accommodating recess 8e of the sprinkler plate 8 are used, and the accommodating recess 8e in a state where the foam mesh fittings 9a, 9b and 9c are superposed on each other. It is fitted inside. The foam mesh fittings 9a, 9b, 9c are for mixing air in the running water well to generate foam water.

Next, the pressure reducing plate 10 disposed on the upstream side of the foam mesh fitting 9a has an O-ring 11 fitted on the outer periphery thereof, and has a central hole 10a formed in the center thereof. Below the central hole 10a, the protruding cylindrical portion 1 is projected downward.
0c is integrally formed, and a pair of fitting ribs 10d, 10d are formed in a protruding manner in the vertical direction on the outer periphery of the protruding tube portion 10c.
d and 10d can be fitted into the positioning groove 8c of the water spray plate 8. Further, on the outer peripheral side of the projecting cylindrical portion 10c, ten speed increasing small holes 10b, 10 are provided at predetermined intervals.
b and 10b are formed in a penetrating shape, and the speed increasing small hole 1
0b, 10b, 10b are the water spray holes 8d, 8d, 8d
In the state where the fitting ribs 10d are fitted in the positioning recessed grooves 8c of the water spray plate 8, each speed increasing speed is small in a state of being aligned above each water spray hole 8d. The hole 10b is arranged. That is, when the fitting rib 10d of the pressure reducing plate 10 is fitted into any one of the positioning concave grooves 8c of the water spray plate 8, the water spray hole 8d and the speed increasing small hole 10b are naturally aligned in the vertical direction.

The O-ring 11 is the sprinkler plate 8
It contacts the inner peripheral surface of and seals. Further, in the projecting cylinder portion 10c of the pressure reducing plate 10, two rectifying nets 12, 1 are provided.
2 is fitted in a superposed manner, and an O-ring 13 is further fitted above it. Further, a strainer 15 is arranged above the pressure reducing plate 10. The strainer 15 includes the speed increasing small holes 10b,
The inner peripheral ring 15a is formed on the inner peripheral side of the inner peripheral ring 15a, the mesh 15c is formed on the outer side of the inner peripheral ring 15a, and the outer peripheral ring 15b is formed on the outer side. It is composed of.

That is, the running water from the upstream side first collides with the inner peripheral ring 15a of the strainer 15, and then the inner peripheral ring 15a.
By hitting against the outer side of the net 15c, it is well dispersed, and after passing through the net 15c to remove dust and the like, the flow velocity is increased by passing through the speed-increasing small holes 10b, 10b, 10b. , The foam metal nets 9a, 9b, 9c are collided with each other, whereby good foam water is obtained.

That is, when the protruding cylindrical portion 10c of the pressure reducing plate 10 is fitted into the central hole 8b of the water spray plate 8, the fitting ribs 10d and 10d are fitted into the two positioning recessed grooves 8c, and the fitting rib is fitted. The two positioning grooves 8c are filled with 10d and 10d, but the other eight positioning grooves 8c form an air passage S that communicates with each other in the vertical direction. Foam wire mesh 9a,
It is introduced into the 9b and 9c sides to generate good foam water. Since the mesh 15c of the strainer 15 can retain the residual water by surface tension after stopping the water, it is possible to favorably prevent the generation of the dripping water to the lower side.

Next, the plate 16 disposed above the strainer 15 is constructed as shown in the exploded perspective view of FIG. 5 and the reverse perspective view of FIG. An elliptical fitting concave portion 16a is formed in the fitting concave portion 16a. A large diameter large hole 16b and a small diameter small diameter hole 16c are penetratingly formed in the fitting concave portion 16a. A pair of positioning protrusions 16d, 16d are formed so as to project upward.

A rubber-made sheet packing 18 is fitted into the fitting recess 16a from above, and the seat packing 18 has a large-diameter large hole 18a aligned with the large-diameter hole 16b. A small-diameter hole 18b having a small diameter that matches the small-diameter hole 16c is formed in a penetrating manner. That is,
As shown in FIG. 6, a flange portion 18c is formed on the lower surface of the large diameter hole 18a and the small diameter hole 18b so as to project, and the flange portion is fitted into the large diameter hole 16b and the small diameter hole 16c to form a sheet packing. 18 is fitted in the plate 16 substantially flush.

The positioning protrusions 16d, 16d
When the plate 16 is fitted into the main body 5, the positioning rib 5d shown in FIG. 9 is contacted and positioned to fix the arrangement positions of the large diameter hole 16b and the small diameter hole 16c in the main body 5. is there. A cylindrical projecting cylinder portion 16e is integrally formed on the lower surface of the plate 16 so as to project downward, and the projecting cylinder portion 16e is formed to have an inner diameter dimension that straddles the large diameter hole 16b and the small diameter hole 16c. The water passing through the small-diameter hole 16c is configured to pass through the protruding cylindrical portion 16e and flow downward, while the large-diameter hole 16b is provided.
The flowing water passing through is discharged to the outside of the protruding tube portion 16e through the opening K formed in the side surface of the protruding tube portion 16e.

A ball valve 19 is disposed in contact with the upper surface of the seat packing 18, and an upper valve case 20 for accommodating the ball valve 19 is, as shown in an enlarged sectional view of FIG. It is formed in the shape of a bottomed cylinder with an opening at the bottom, and a spring 21 is arranged in the vertical direction inside,
A valve retainer 22 is disposed below the spring 21, and the valve retainer 22 is configured to press the ball valve 19 onto the seat packing 18 by the urging force of the spring 21. As shown in a perspective view in FIG. 8, an arm portion 20b is integrally formed so as to project laterally, and the valve case 20 is provided at the tip of the arm portion 20b.
The shaft portion 20c is integrally formed in parallel with the shaft portion 20c.
An engagement notch 20d is formed at the upper end of c.

The shaft portion 20c is rotatably inserted into the insertion vertical hole 5b shown in FIG. 9 so that the valve case 20 can be rotated in an arc shape about the shaft portion 20c. The engagement notch 20d is engaged with the engagement hole 23a of the button 23 to connect the button 23. The button 23 is the lateral hole 5 for a button shown in FIG.
It is possible to insert through a from the outside to connect with the shaft portion 20c, and further, by connecting the button cover 25 shown in FIG. 10 from the outside to the connecting protrusion 23b protruding to the outside of the button 23, In this state, the shaft portion 20c is rotated via the button 23 by pushing the button cover 25 with a finger from the outside, and the valve case 20 is rotated in an arc shape by the operation of the button 23.

The bottom portion 20a of the valve case 20 comes into contact with the rising arc rib 5c shown in FIG. 9 and rotates while contacting the rising arc rib 5c.
The rising arc rib 5c is formed along an arc locus of the valve case 20 rotating about c, and when the valve case 20 rotates, only the rising arc rib 5c contacts. Therefore, since the contact surface is extremely small, the valve case 20 can be moved by a light operation.

If the rising arc rib 5c does not exist,
When the ball valve 19 rides on a portion of the seat packing 18 other than the holes 18a and 18b, the valve case 20 is pressed upward, the shaft portion 20c is tilted, and the O-ring 24 fitted on the outer periphery of the shaft portion 20c. However, since the bottom portion 20a of the valve case 20 is always in contact with the rising arc rib 5c in this example, even if a pressing force acts upward from the ball valve 19 side, the shaft portion 20c Does not incline, and the O-ring 24 can ensure a good sealing property.

As the valve case 20 moves while being in contact with the rising circular arc rib 5c around the shaft portion 20c by operating the button 23, the ball valve 19 is attached to the seat packing 18 as shown in FIG. The ball valve 19 moves from the small diameter hole 18b to the large diameter hole 18a or vice versa, and is engaged with one of the holes 18a and 18b.
When the small diameter hole 18a is fitted into the large diameter hole 18a, the small diameter hole 18b side is in an open state, and the water flowing from the upstream side flows through the small diameter holes 18b and 16c into the projecting cylindrical portion 16e to move the straightening plate 14 Through the straightening nets 12 and 12, and is discharged from the central hole 8b of the water sprinkling plate 8 as uniform water. On the other hand, the ball valve 19 has a small diameter hole 18b.
When it becomes a fitting state, the large diameter hole 18a side is opened, and the flowing water is flowed from the opening K to the shower channel outside the projecting cylindrical portion 16e, and contacts the inner peripheral ring 15a of the strainer 15 as described above. Running water is dispersed to the outside and the net 15
The speed is increased by passing through c and further through the speed increasing small hole 10b, and the foam mesh fittings 9a, 9b, 9 below
It collides with c and becomes foam water, and is sprayed as shower water to the outside through the water spray holes 8d, 8d.

The curved receiving surface 22a, which is in contact with the ball valve 19 on the lower surface of the valve retainer 22, is formed in a spherical shape having a radius of curvature larger than the diameter of the ball valve 19, and therefore the valve retainer 22a. Reference numeral 22 slightly inclines in the moving direction of the valve case 20, has an effect of pushing the ball valve 19 in the moving direction satisfactorily, and can assist the movement of the ball valve 19 satisfactorily. Since the contact surface becomes smaller, the ball valve 19 can be moved with a light force.

Further, the ball valve 19 is further provided with the small-diameter hole 1
When the water flows into the outer shower water channel when it is fitted in 8b, the internal pressure in the shower head 4 increases because it passes through the speed increasing small hole 10b, and the ball valve 19
Is firmly pressed by the small diameter hole 18b, and then the large diameter hole 18a
Although a large operating force is required to remove the ball valve 19 from the small diameter hole 18b when moving the ball valve 19 to the side, in this example, the diameter of the small diameter hole 18b is reduced to reduce the small diameter of the ball valve 19. The depth of fitting into the hole 18b is set to be shallow, and conversely, the large-diameter hole 18a is used for the ball valve 1
9 has a large diameter so that the ball valve 19 is shallowly fitted into the seat packing 18 in consideration of the change in the internal pressure in the shower head 4, and a small diameter small hole 18b into which the ball valve 19 is fitted. The large-diameter hole 18a having a large diameter that is deeply fitted is formed so that the operating force when the ball valve 19 is moved becomes uniform.

That is, for the small diameter hole 18b, the ball valve 1
Since 9 is fitted in shallowly, the ball valve 19 is fitted with a large-diameter hole 18
When the ball valve 19 is moved to the side a, the ball valve 19 can be moved with a light force in opposition to the internal pressure. Conversely, when the ball valve 19 is moved from the large diameter hole 18a to the small diameter hole 18b side,
Since the internal pressure is small, the ball valve 19 can be moved with a light force even when it is deeply fitted.

[0026]

The present invention is provided with a rectifying water channel on the center side and a ball valve on the outer side of the rectifying water channel, which moves and switches over the seat packing to increase the internal pressure when flowing water. When the ball valve that opens into the shower water passage is formed by forming a small diameter hole into which the ball valve shallowly fits and a large diameter hole into which the ball valve that opens toward the shower water passage fits deeply, Although the internal pressure in the shower head is high, the ball valve is shallowly fitted into the small diameter hole of the seat packing, so it can be lightly pulled out of the small diameter hole and moved to the large diameter hole side. When the ball valve is tightly fitted, it is deeply fitted. At this time, the internal pressure in the shower head does not rise, so even if it is deeply fitted, move the ball valve with a light operating force. It can be. In other words, the operating force when moving from the small diameter hole to the large diameter hole side and the operating force when moving the ball valve from the large diameter hole to the small diameter hole side can be made almost the same, and the switching operation of the ball valve can be performed. It has the effect that it can be performed smoothly.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a single lever type water faucet.

FIG. 2 is an enlarged cross-sectional view showing the internal structure of the shower head.

FIG. 3 is an exploded perspective configuration diagram of an internal member.

FIG. 4 is an exploded perspective configuration diagram in which the components of FIG. 3 are reversed.

FIG. 5 is an exploded perspective view of a plate and a sheet packing.

6 is an exploded perspective view in which the constituent members of FIG. 5 are reversed.

FIG. 7 is a sectional view for explaining the operation of the ball valve and the seat packing.

FIG. 8 is an exploded perspective view of a valve case and a button.

FIG. 9 is a half cross-sectional configuration diagram showing a state in which the main body of the shower head is turned upside down and internal components are removed.

FIG. 10 is an external perspective view of the shower head with the button cover removed.

[Explanation of symbols]

 4 Shower head 5 Main body 6 Shaft part 8 Sprinkler plate 8a Inner screw 8b Central hole 8c Positioning groove 8d Water sprinkling hole 8e Storage recesses 9a, 9b, 9c Foam mesh fitting 10 Pressure reducing plate 10a Central hole 10b Acceleration small hole 10c Projection cylinder part 10d Fitting rib 11 O-ring 12 Straightening net 15 Strainer 15a Inner ring 15c Net body 16 Plate 16a Fitting recess 16b Large diameter hole 16c Small diameter hole 16d Positioning protrusion 16e Projection tube portion 17 O-ring 18 Sheet packing 18a Large diameter hole 18b Small-diameter hole 19 Ball valve 20 Valve case 20a Bottom 20c Shaft 21 Spring 22 Valve retainer 22a Curved receiving surface 23 Button 24 O-ring 25 Button cover K Open

Claims (1)

[Claims] 1. A ball valve that moves between a central rectifying water channel and a shower flume outside of the rectifying water channel, which increases in internal pressure when flowing water, is switched over the seat packing, and the seat packing has a ball valve that opens toward the rectifying water channel. A shower head, characterized in that a small diameter hole into which the ball valve fits shallowly and a large diameter hole into which the ball valve opening to the shower water channel side fits deeply are formed.