JPH0439320Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a faucet water switching device that is attached to a water faucet and switches the flowing water as necessary to obtain normal running water, filtered running water, and shower running water.

[Conventional technology]

Conventionally, there have generally been few faucet water switching devices that are coaxially attached to a water faucet and can switch the flowing water to obtain normal running water, filtered running water, and shower running water.

[The problem that the idea aims to solve]

In addition, some water switching devices for faucets have been made that can provide three types of flowing water, but these are large and require a large space, making them difficult to install and use.

[Means to solve the problem]

The faucet water switching device of this invention is composed of the following parts.

a) A running water inlet that is fitted into a water faucet and introduces running water; b) A normal flow path that is formed approximately coaxially with the running water inlet and that normally discharges running water; A filtration channel that filters running water with a filter material such as and discharges filtered water; d) A shower channel that is formed on the outer periphery of the filtration channel and discharges shower water; A flow path switching means that switches the water flowing in from the mouth to any one of a normal flow path, a filtration flow path, or a shower flow path.

[Effect]

The flowing water flowing in from the flowing water inlet is switched to one of the normal flow path, filtration flow path, or shower flow path by the flow path switching means, and is flown into any one of the normal flow path, filtration flow path, and shower flow path. It is converted into one stream of water and discharged.

[Example] Next, this invention will be explained with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of this invention. In this figure, 1 is the mounting cap, 2
is an annular mounting ring, 3 is an annular packing,
4 is a two-stage cylindrical upper case consisting of a small cylindrical part 4a and a large cylindrical part 4b, a threaded part is formed on the outer peripheral surface of the small cylindrical part 4a, and four screw parts are formed on the inner peripheral surface of the large cylindrical part 4b. A claw portion is formed. Small cylindrical part 4a
A mounting cap 1 is screwed onto the threaded portion of the cap through a mounting ring 2 and a packing 3. That is, the water outlet 5 of the faucet 5 indicated by the dashed line in FIG.
The structure is such that the water discharge port 5a can be brought into pressure contact with the upper surface of the gasket 3 by screwing the mounting cap 1 while pressing down the outer peripheral edge 5b of the mounting ring 2 with the inner peripheral edge of the mounting ring 2. It's summery. Further, 4c is a running water inlet opened at the center of the upper part of the small cylindrical portion 4a of the upper case 4, and 4d is a fitting groove formed in a circumferential shape on the lower surface of the upper case 4.

6 is a cylindrical main case with an open top and bottom, 6a is an outer wall of the main case 6, 6b is an inner wall formed on the inner periphery of the outer wall 6a, and 6c is an inner cylinder formed on the inner periphery of the inner wall 6b. All of these are integrally and coaxially formed. Four engaging portions are formed on the upper outer circumferential surface of the outer wall 6a, and the claw portions of the upper case 4 are engaged with the engaging portions, and the upper case 4 is bonded to the engaging portions. Further, 6d is a key groove formed on the lower inner circumferential surface of the inner cylinder 6c, and 6e
6f is a flow channel formed by the gap between the outer wall 6a and the inner wall 6b of the main case 6. 8 holes are formed in the lower part of the inner cylinder 6c at intervals of 45 degrees circumferentially.
6g is 45 at every 90 degrees around the bottom outer circumference of main case 6.
This is a water hole that was opened within a certain range.

7 is a dish-shaped lower case, 7a is a large number of shower nozzle parts formed in the lower case 7, and 7b is a cylindrical adhesive reinforcing wall provided at the peripheral edge of the lower case 7. The lower outer peripheral surface of the outer wall 6a of the main case 6 is
The inner peripheral surface of the adhesive reinforcing wall 6b is used as an adhesive reinforcing wall and is adhered to the main case 6. 7c is a circumferential groove formed on the outer peripheral surface of a cylindrical portion formed downward at the center of the lower case 7.

Reference numeral 8 denotes a cylindrical outer valve with openings at the top and bottom. It is stored.

FIG. 2 shows details of the outer valve 8. A is a left side view of the outer valve 8, b is a front view, and c is a right side view.

8a is a water inlet passage formed in the upper part of the outer valve 8; 8b is an O-ring fitted in a circumferential groove formed in the outer peripheral surface of the upper part of the outer valve 8; This prevents water from leaking between the inner cylinder 6c and the inner cylinder 6c. 8c is a communication hole formed on the upper outer peripheral surface of the outer valve 8, 8d is an O-ring fitted into a circumferential groove formed around the communication hole 8c, and 8e
is a valve seat formed on the inner peripheral surface of the outer valve 8, 8f and 8g are two fitting protrusions protruding at positions facing the inner peripheral surface of the outer valve 8, and 8h is a valve seat formed on the inner peripheral surface of the outer valve 8. An escape hole opened on the circumferential surface, 8i, two key grooves formed on the bottom outer circumferential surface of the outer valve 8, 8j
is a running water outlet formed at the bottom of the outer valve 8. Reference numeral 8k denotes four filtrate water outlets opened approximately every 90 degrees on the circumferential surface of the outer valve 8, and eight holes 6e opened at the bottom of the inner cylinder 6c of the main case 6 shown in FIG. It is formed to communicate.

As shown in FIGS. 2a to 2c, the escape hole 8h is formed on the circumferential surface of the outer valve 8 in a range of approximately 180 degrees. Within this range, the escape hole 8h is formed horizontally within a 90 degree range, and is formed obliquely, that is, in a spiral shape, within the other 90 degree range.

Further, in FIG. 1, reference numeral 9 denotes an inner valve, which is housed in internal contact with the outer bulb 8 so as to slide up and down on the inner circumferential surface of the outer bulb 8. Details of this inner valve 9 are shown in FIG. Figure 3a shows the inner valve 9
b is a front view, and b is a bottom view.

9a is the spherical head of the inner valve 9, 9b is the head 9
9c is a cylindrical main body, which is an O-ring fitted into a circumferential groove formed on the outer periphery of a. Reference numerals 9d and 9e are two guide grooves formed in the outer peripheral surface of the main body 9c symmetrically with respect to the central axis of the main body 9c, in the same manner as the escape hole 8h of the outer bulb 8 described above.
That is, a guide groove 9d is formed on the outer peripheral surface of the inner valve 9 in a range of approximately 180 degrees, and the other guide groove 9e is formed at a position symmetrical to this. Within this 180 degree range, within a 90 degree range,
The guide grooves 9d and 9e are formed parallel to the bottom end surface of the inner valve 9, and in the other 90 degree range, the guide grooves 9d and 9e are formed obliquely, that is, spirally, so as to approach the top end surface of the main body 9c when viewed from the side. It is formed in the shape of 9f is a fitting projection protruding from the lower outer peripheral surface of the main body 9c, and 9g is a rectangular partition wall provided integrally with the main body 9c so as to divide the internal space of the main body 9c into two. In addition, the inner valve 9
The guide grooves 9d and 9e are adapted to fit into the fitting protrusions 8f and 8g of the outer valve 8, respectively, and as shown in FIG.
The fitting protrusion 9f passes through the relief hole 8h of the outer valve 8 and fits into the keyway 6d of the inner cylinder 6c of the main case 6.

Further, in FIG. 1, reference numeral 10 denotes a disc-shaped intermediate plate with an open center. 10a is a cylindrical outer wall formed integrally with the middle plate 10 on the upper surface of the outer periphery of the middle plate 10, and 10b is a cylindrical inner wall formed integrally with the middle plate 10 on the upper surface around the central opening of the middle plate 10. , 10
10d is a cylindrical fitting wall formed integrally with the middle plate 10 on the lower surface of the outer periphery of the middle plate 10.

The upper end of the outer wall 10a is a fitting groove 4d of the upper case 4.
The inner peripheral surface of the inner wall 10b is connected to the main case 6.
The fitting wall 10d fits into the upper outer peripheral surface of the inner wall 6b of the main case 6.

FIG. 4 shows a - sectional view in FIG. 1.
Note that FIG. 1 is a - sectional view in FIG. 4. 10e is an inner wall 10b that differs by 90 degrees from the pipe 10c.
The holes 10f formed at the location 10f are a large number of flowing water supply holes formed in the middle plate 10.

Reference numeral 6i denotes a shower-side water spout opened on the circumferential surface of the inner cylinder 6c, and this shower-side water spout 6i is formed to communicate with the pipe line 10c.

Reference numeral 6j denotes a filtration side water spout opened on the circumferential surface of the inner cylinder 6c, and this filtration side water spout 6j is formed so as to communicate with the hole 10e of the inner wall 10b.

In FIG. 4, when the communicating hole 8c is located at a position A as shown by the solid line, the communicating hole 8c is closed by the inner circumferential surface of the inner cylinder 6c and is in a non-communicating state.

Also, when looking at the outer valve 8 from the top, turn it 90 degrees clockwise.
When the communication hole 8c is rotated once and positioned at the part B shown by the broken line, the communication hole 8c is connected to the flow channel 6h via the shower side spout 6i and the pipe line 10c.
It is now connected to the

Furthermore, when the outer valve 8 is further rotated 90 degrees clockwise and the communication hole 8c is positioned at another position C as shown by the broken line, the communication hole 8c connects the filtration side spout 6j and the hole 10e. Through the outer wall 10a,
It communicates with a space surrounded by the inner wall 10b, the upper case 4, and the inner cylinder 6c.

Note that since the O-ring 8d fitted around the communication hole 8c is always in pressure contact with the inner circumferential surface of the inner cylinder 6c, the O-ring 8d fitted around the communication hole 8c is always in pressure contact with the inner circumferential surface of the inner cylinder 6c. It is designed to prevent leakage of running water.

In FIG. 1, 12 is a filter made of a material such as powdered activated carbon or ceramics. 11a and 11b are disk-shaped upper and lower filters with an open center,
The upper filter 11a and the lower filter 11b are made of a material that allows flowing water to pass through but prevents the filter 12 from passing through. The filter 12 is filled in an annular space surrounded by the upper filter 11a, the lower filter 11b, the inner wall 6b of the main case 6, and the inner cylinder 6c.

13 is an annular lower plate with an opening in the center;
Reference numeral 3a indicates a large number of running water outflow holes provided in the lower plate 13. The peripheral edge of the lower plate 13 is fitted into and supported by a step formed on the bottom upper surface of the main case 6.

14 is a switching lever, 14a is a protrusion formed on the inner peripheral surface of the cylindrical part of the switching lever 14, and this protrusion 14a is formed on the outer peripheral surface of the cylindrical part formed downward in the center of the lower case 7. It is designed to fit into the groove 7c. 14b is a cylindrical part 2 protrudingly provided at a position facing the inner circumferential surface of the cylindrical part of the switching lever 14.
(Since FIG. 1 is a sectional view taken along the - section in FIG. 4, one of the two projections 14b is shown due to the cutting position, but the other projection 14b is (The protrusion 14b is not shown), and the protrusion 14b is adapted to fit into a keyway 8i formed on the outer peripheral surface of the lower part of the outer bulb 8. That is, since the switching lever 14 is rotatably attached to the lower case 7, when the switching lever 14 is rotated, the outer valve 8 slides on the inner peripheral surface of the inner cylinder 6c according to the switching lever 14. It is supposed to rotate while doing so.

At this time, the fitting protrusion 9f of the inner valve 9 passes through the escape hole 8h of the outer valve 8 and passes through the keyway 6 of the inner cylinder 6c.
d, the inner valve 9 does not follow the rotation of the outer valve 8 and maintains a constant position in the direction of rotation. In addition, the inner valve 9 can be moved in the vertical direction along the keyway 6d with respect to the thrust (axial) direction of the inner cylinder 6c. In addition, the guide groove 9 of the inner valve 9
d and 9e are fitted into the fitting protrusions 8f and 8g of the outer valve 8, respectively, so that the inner valve 9
move in the vertical direction according to the positions of the fitting protrusions 8f and 8g, which move as the outer valve 8 rotates. This will be explained below with reference to the drawings.

FIG. 5 is a diagram for explaining the positional relationship between the outer valve 8 and the inner valve 9.

FIG. 5a is an external view showing the case where the inner valve 9 is located at the lower part. In this case, the fitting protrusions 8f and 8g of the outer valve 8 are located at the uppermost part of the spiral guide grooves 9d and 9e of the inner valve 9, so the inner valve 9 is located at the lowermost part. There is. Therefore, a gap is created between the valve seat 8e of the outer valve 8 and the O-ring 9b of the inner valve 9. At this time, as shown by the solid line in FIG. 4, the communication hole 8c is located at a portion A and is closed by the inner circumferential surface of the inner cylinder 6c.

FIG. 5b is a diagram showing the case where the outer valve 8 is rotated 90 degrees clockwise when viewed from above. In this case, in order to prevent the inner valve 9 from rotating following the outer valve 8, the fitting protrusion 9f of the inner valve 9 is
is fitted into a keyway 6d of the inner cylinder 6c as shown in FIG. Therefore, the inner valve 9 does not rotate, and only the outer valve 8 rotates. For this reason, the fitting protrusions 8f and 8g of the outer valve 8
The guide grooves 9d and 9e are formed along the oblique (helical) portions of the guide grooves 9d and 9e of the inner valve 9.
It moves from the uppermost part of e toward the lowermost part. Therefore, the inner valve 9 rises to be located in the upper part. As a result, the valve seat 8e of the outer valve 8 and the O-ring 9b of the inner valve 9 come into close contact, so that the flow of water flowing from the water introduction path 8a is cut off. At this time, as shown by the broken line in FIG. 4, the communication hole 8c becomes part B, and the communication hole 8c and the shower-side water spout 6i of the inner cylinder 6c come to communicate with each other.

FIG. 5c shows the case where the outer valve 8 is further rotated 90 degrees clockwise when viewed from above. In this case, similarly to FIG. 5b, the fitting protrusion 8 of the outer valve 8
f and 8g move along guide grooves 9d and 9e of inner valve 9. At this time, the fitting protrusion 8
The portions of the guide grooves 9d and 9e that are fitted with the grooves f and 8g are parallel to the bottom end surface of the inner valve 9, and this portion is the uppermost portion of the guide grooves 9d and 9e in the case of FIG. 5b described above. It is in the same vertical position as the lower part. For this reason, the inner valve 9
The position of is unchanged from the case of FIG. 5b, and remains in the upper part. As a result, the close contact between the valve seat 8e and the O-ring 9b is maintained, so that the flow of water flowing in from the water introduction path 8a is cut off. At this time, as shown by another broken line in FIG. 4, the communication hole 8c becomes part C, and the communication hole 8c and the inner cylinder 6c
The filtration side spout 6j comes into communication with the filtration side spout 6j. Furthermore, the escape hole 8h of the outer valve 8 is spirally opened so as not to obstruct the vertical movement of the fitting protrusion 9f of the inner valve 9, so that the inner valve 9 can smoothly move up and down. ing.

In the above configuration, as shown in FIG. 1, when the inner valve 9 is in the position shown by the solid line, the running water flowing in from the running water inlet 4c and coming out of the faucet 5 flows into the running water inlet 4c and the outer valve 8. The water passes through the inlet passage 8a, flows down the water channel formed by the gap between the valve seat 8e and the O-ring 9b, and the gap between the inner circumferential surface of the main body 9c of the inner valve 9 and the partition wall 9g, and forms a water outlet. 8
It is normally discharged downward from j as flowing water.

In addition, at this time, as shown by the solid line in FIG. 4, the communication hole 8c is located at the portion A and is closed, so that no water flows there.

Next, when the switching lever 14 is rotated 90 degrees clockwise when viewed from above, and the inner valve 9 is placed in the position shown by the broken line, and the valve seat 8e and the O-ring 9b are brought into close contact, the flowing water introduction passage 8a The path of running water flowing in from the bridge is cut off. At this time, as shown by the broken line in FIG. 4, the communication hole 8c becomes part B and communicates with the shower side spout 6i, so the communication hole 8c becomes part B and communicates with the shower side spout 6i.
A flow path is formed by the shower-side spout 6i, the pipe line 10c, the flow channel 6f, and the water flow hole 6g. Therefore, the flowing water reaches the upper part of the lower case 7 through this channel, and is discharged from the shower nozzle portion 7a as shower water.

Furthermore, when the switching lever 14 is rotated 90 degrees clockwise when viewed from above, the close contact between the valve seat 8e and the O-ring 9b is maintained, and the path of the flowing water flowing in from the flowing water introduction passage 8a remains cut off. becomes. At this time, as shown by the broken line in FIG.
c becomes part C and communicates with the filtration side spout 6j, so the communication hole 8c, the filtration side spout 6j and hole 1
A flow path is formed by Oe. Therefore, the flowing water whose path is cut off by the inner valve 9 flows out through this flow path to the upper part of the intermediate plate 10. Middle plate 10
The running water that has reached the upper surface passes through the running water supply hole 10f, passes through the upper support 11a, and permeates into the filter 12. The flowing water filtered by this filter 12 passes through the lower support 11b and reaches above the lower plate 13. The running water that has reached this lower plate 13 flows out to the upper part of the bottom of the main case 6 through the running water outlet hole 13a, and flows out to the bottom of the main case 6 through the hole 6e and the filtered water outlet 8k of the outer valve 8.
The water is discharged as filtered water from the water outlet 8j through the filter.

[Effect of idea]

As explained above, the water flow switching device for a faucet of this invention has a normal flow path approximately coaxial with the running water inlet.
Since the filtration flow path and the shower flow path are provided, and the switching means is provided within the normal flow path, its shape can be reduced in size compared to the conventional flow path. Therefore, when installing this water flow switching device for a faucet, it does not require a large space and has the advantage of being easy to install and use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of this invention. FIG. 2 is an external view showing the outer valve 8 in the same embodiment, in which a is a left side view, b is a front view, and c is a right side view. FIG. 3 is an external view showing the inner valve 9 in the same embodiment, in which a is a front view and b is a bottom view. FIG. 4 is a - sectional view in FIG. 1. FIG. 5 is an external view for explaining the positional relationship between the outer valve 8 and the inner valve 9, where a is an external view showing the case where the inner valve 9 is located at the lower part, and b is an external view showing the outer valve 8 in a plane. 90 clockwise when viewed from
External view showing the case of rotating the outer valve 8.
FIG. 3 is an external view showing the case where the device is further rotated 90 degrees clockwise when viewed from a plane. 4... Upper case, 4c... Running water inlet, 6...
Main case, 6c...inner cylinder, 6f...flow channel,
6g...Water hole, 6i...Shower side spout, 6
j...Filtration side spout, 7...Lower case, 7a...
Shower nozzle part, 8...Outer valve, 8a...Water introduction path, 8c...Communication hole, 8e...Valve seat, 8j
...Water outlet, 8k...Filtered water outlet, 9...
Inner valve, 9a...Head, 9c...Body, 10...
...middle plate, 10c...pipeline, 10e...hole, 10f
...Water supply hole, 12...Filter, 13a...
Water outflow hole, 14...switching lever.

Claims (1)

[Scope of Claim for Utility Model Registration] A running water inlet that is fitted into a water faucet and introduces running water; A normal flow path that is formed approximately coaxially with this running water inlet and that discharges normal running water; a filtration channel formed on the outer periphery and discharging filtered water; a shower channel formed on the outer periphery of the filtration channel and discharging shower water; and a water inlet port formed in the normal flow channel. 1. A water flow switching device for a faucet, characterized in that the water flow switching device for a faucet is comprised of a flow path switching means for switching the flowing water flowing in from the normal flow path, the filtration flow path, or the shower flow path to any one of the flow paths.