JP4842525B2 - Shower head with water purification function - Google Patents

Description

  The present invention relates to a shower head with a water purification function, and more specifically, a water purification cartridge is accommodated in a shower head attached to a faucet, a wash basin, a bathroom, etc. of a home kitchen, and raw water and purified water are switched between a straight shape and a shower shape. The present invention relates to a shower head with a water purifying function that can be discharged.

  In recent years, a shower head with a water purification function containing a water purification cartridge has been developed and commercialized as a means to remove chlorine contained in tap water in a kitchen, wash basin or bathroom of a home, and also introduced in patent literature. (For example, see Patent Documents 1 to 4).

FIG. 10 is a cross-sectional view of a water purifier described in Patent Document 1 below.
This water purifier 80 is a water purifier attached to a water faucet or a hot water faucet provided in a kitchen sink, etc., and a concentric cylindrical water purifier cartridge 82 is detachably accommodated in a main body case 81, and a concentric cylinder A raw water supply pipe 83 is connected to one end of the inner cylinder of the water purifier cartridge 82, a raw water outlet is provided at the other end of the inner cylinder, and a shower nozzle or a straight stream switching nozzle is provided at the tip of the main body case 81. 84, and the shower flow / straight flow switching nozzle 84 is connected to the raw water outlet and the purified water outlet of the water purifier cartridge 82 via a valve mechanism.

  A similar shower head is also disclosed in Patent Document 2 below. Although not shown, this shower head is formed in a size that can be directly held by hand, provided with a connection end with other parts, and integrated with the gripping part containing the water purification cartridge and the tip of the gripping part. A flow path switching means for selecting between raw water and purified water, and a head provided with a shower discharge port, each of the raw water discharge port and the purified water discharge port provided on the head are independent from each other. In this configuration, any one of the raw water discharge port and the purified water discharge port is provided inside or outside the formation region of the shower discharge port.

  Furthermore, in Patent Document 3, a raw water straight discharge port and a purified water straight discharge port are provided side by side, and a raw water shower discharge port is disposed around the raw water straight discharge port, and the direction of running water is set in the flow path. A switching mechanism for switching between the discharge port and the water purification straight discharge port is formed. Further, the valve body is coaxially coupled to the operation portion, and the valve body incorporated in the switching mechanism is rotated by rotation of the operation portion. There is described a faucet water purifier that can be rotated and switched to any one of three directions of a raw water straight discharge port, a purified water straight discharge port, and a raw water shower discharge port.

  Further, in Patent Document 4, a head formed with a shower discharge port and a gripping portion accommodating the purification cartridge in an exchangeable manner are integrally formed, and the head is provided with an operation portion on the outer peripheral surface. A shower head with a water purifying function is described which incorporates a flow path switching valve of the type and switches the type and discharge form of discharged water by rotating the switching valve.

Japanese Patent Laid-Open No. 3-154585 (see FIG. 1, lower column on the third page, lower column to upper left column on the fourth page) Japanese Patent Laying-Open No. 2001-137143 (see FIGS. 5, 6, and claim 1) Japanese Patent No. 2757151 (see FIGS. 1 and 2, paragraphs [0008] to [0010], [0036]) Japanese Patent Laid-Open No. 2001-149251 (refer to FIG. 5, FIG. 7 and claim 1)

However, all of the water purifiers described in Patent Documents 1 to 4 have problems in operability and downsizing.
First, in the water purifier described in Patent Document 1, the switching nozzle is provided in the vicinity of the discharge port at the tip of the main body case, and the switching nozzle is directly rotated by hand, so that the shower flow and the straight flow are provided. It is supposed to switch to. For this reason, a hand may touch a straight nozzle or a shower nozzle at the time of switching operation. For this reason, a hand may get wet with water, and on the other hand, a straight nozzle or a shower nozzle may be soiled and unsanitary.

  On the other hand, the shower head described in the above-mentioned patent document 2 is provided with a switching lever formed of a push button mechanism at a location different from the discharge port, so that the hand does not touch the straight nozzle or the shower nozzle. . However, since the push button mechanism has a complicated structure, a large number of parts, and a large number of movable mechanisms, the probability of failure is high and maintenance is troublesome. Furthermore, since the mechanism is complicated, a larger space is required for the head, and there is a problem in miniaturization.

  Furthermore, the water purifier described in Patent Document 3 is provided with an operation lever on the right side of the head, and the operation lever can switch the flow path, but the switching valve mechanism is enlarged, There is a problem in miniaturization. Further, since the operation lever is provided on the right side of the head, it can be operated without inconvenience if the user is a right-handed person, but it is difficult for a left-handed person to operate.

  Furthermore, the shower head described in Patent Document 4 is difficult to use for left-handed persons because the operation lever is provided on the right side of the head. For example, while using the shower while holding the grip with your right hand, you can easily operate the control lever with your left hand, but if you are a left-handed person, you will hold the grip with your left hand. When trying to operate the control lever with the right hand during hair washing, it is difficult to operate because the control lever is located on the opposite side of the head. In addition, due to the structure of the switching mechanism, the head has to be enlarged, and there is a problem in miniaturization.

  Therefore, the present invention has been made to solve the problems of the prior art, and the object of the present invention is excellent in operability and is small enough not to interfere with water work in a kitchen or the like. The purpose of the present invention is to provide a shower head with a water purification function that makes it possible.

In order to achieve the above object, a shower head with a water purifying function according to claim 1 is provided with a cylindrical gripping part containing a water purification cartridge and a detachable attachment at one end of the cylindrical gripping part. A built-in path switching mechanism, and a cylindrical head having a discharge port on the side,
The flow path switching mechanism is formed in the cylindrical housing of the cylindrical head, has an insertion hole in the center, and the first and second closing portions and the first and second outflows on the outer periphery of the insertion hole. One shaft end includes a partition having first and second outflow holes communicating with the passage, and a rotary body having first and second valve ports communicating with the first and second inflow passages in the cylindrical housing. A rotation axis,
The rotating body is pressed toward the partition by a spring,
An operation handle connected to the rotating body and mounted on the head of the cylindrical head is rotated so that the first or second outflow hole of the partition wall and the first or second valve port of the rotating body communicate with each other. In the shower head with water purification function that switches the flow path by
A plurality of recesses or projections are provided at substantially equal intervals on the outer circumference of the partition wall, and the same number corresponding to the recesses or projections of the partition wall is provided on the outer circumference of the rotating body corresponding to the partition wall. Convex or concave is provided,
When the flow path switching is performed, when the convex portion provided in one of the rotating body or the partition wall comes out of the concave portion provided in the other of the rotating body or the partition wall, the rotating shaft is Slides axially against the spring,
With the rotation of the rotating body slid in the axial direction, the convex portion slides and rotates on the surface of the rotating body or the partition, and is moved to the adjacent concave portion .

The invention according to claim 2 relates to the showerhead with a water purification function according to claim 1, wherein the flow path switching mechanism includes the first and second closing portions, the first and second outflow holes, and the first. When the first valve port communicates with the first outflow hole of the partition wall, the second valve port is closed by the first closing portion, and the second outflow port The hole is closed by the wall surface of the rotating body, and when the first valve port communicates with the second outflow hole of the partition wall, the second valve port is closed by the second closing portion, and the first valve port is closed. 1 outflow hole is closed by the wall surface of the rotating body, and when the second valve port communicates with the first outflow hole of the partition wall, the first valve port is closed by the first closing portion, and The second outflow hole is closed by the wall surface of the rotating body, and the second valve port communicates with the second outflow hole of the partition wall. The first valve port is closed by said second closure portion, the first outlet hole is characterized in that it is disposed at positions that are closed by the wall surface of the rotating body.

  Further, the invention according to claim 3 relates to the shower head with a water purification function according to claim 1 or 2, wherein the first and second outflow holes have a substantially elliptical plane, and the first, At least one plane of the second valve port is substantially elliptical.

  Moreover, invention of Claim 4 is related with the shower head with a water purifying function in any one of Claims 1-3, The outer periphery of the 1st, 2nd closing part of the said partition, and the 1st, 2nd outflow hole Each of the parts is formed of a convex body, and a valve seat packing is inserted into the outer peripheral surface of the convex body.

According to invention of Claim 1, a flow path is changed with the partition provided in the cylindrical head part, and the rotary body (rotary disc), The operation handle which rotates the said rotary body is provided. Since it is provided on the head of the cylindrical head, for example, the flow path can be easily switched with either the left or right hand even during use. Moreover, since the switching mechanism is provided in the cylindrical head with a simple configuration, it is possible to provide a shower head with a water purification function that does not increase the size of the cylindrical head.
Further, by rotating the rotating body of the rotating shaft (rotating disc), the first, eject different fluids flowing from the second inlet passage with a first, different forms from the second outlet hole be able to. For example, when raw water and purified water are allowed to flow into the first and second inflow passages, they can be discharged from the discharge ports of the first and second outflow holes in different forms, that is, in a straight shape and a shower shape, respectively.
Furthermore, since the rotating body is pressed in the direction of the partition wall by the spring, the valve port, the closing portion, and the outflow hole can be more liquid-tightly connected.
Further, when the rotating disk is rotated at the time of switching, the protrusion of the rotating disk comes out of the recess of the partition wall, slides on the surface of the partition wall (this surface is higher than the recess), and the adjacent recess Moved to. At this time, the rotating shaft is temporarily slid in the axial direction, and a gap is generated between the rotating disk and the partition wall , that is, the seal surface, and the rotating disk is rotated. Therefore, wear of the partition wall and the rotating disc is reduced, also can alleviate the sliding resistance between the partition of switching can be alleviated even water pressure increase in the inner portion further.

According to the invention of claim 2, by providing the same number of first and second closing portions corresponding to the first and second outflow holes, any one of the valve port and the partition wall of the rotating disk is provided. When one outflow hole communicates with the other outflow hole, the other valve port is closed with one of the first and second closed portions, and the other outflow hole is closed with a rotating disk. So liquid leakage can be prevented.
Furthermore, since this flow path switching mechanism is composed of a partition wall in the through hole and a rotating body in contact with the partition wall, the rotating body is cut in a cross-sectional area of the water purification cartridge (in a direction perpendicular to the longitudinal direction). The cross-sectional area of the surface can be made smaller, and the head can be made relatively small.

  According to the invention of claim 3, by making at least one of the first and second outflow holes and the first and second valve ports into an elliptical shape, the amount of fluid flowing out from the first and second outflow passages can be reduced. The size of the housing can be increased without changing.

According to invention of Claim 4, the 1st, 2nd closing part and the 1st, 2nd outflow hole were made into the convex body, and the valve seat packing which consists of elastic bodies, for example was attached to the outer peripheral surface of the said convex body As a result, the connection with the first and second valve ports can be performed in a liquid-tight manner. Moreover, by making the first and second outflow holes into a cylindrical body and attaching the valve seat packing to the cylindrical body, it is possible to prevent the valve seat packing from being pushed into the cylindrical body by water pressure from the outside. It becomes like this.
Further, at the time of switching, the rotating shaft is temporarily slid in the axial direction, so that there is a gap between the rotating disk and the valve seat packing, that is, the seal surface, and the rotating disk rotates. . For this reason, wear between the valve seat packing and the rotating disk is alleviated, sliding resistance with the valve seat packing at the time of switching can be alleviated, and internal water pressure rise can also be alleviated.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies a shower head with a water purification function for embodying the technical idea of the present invention, and is intended to specify the present invention as this shower head with a water purification function. Rather, other embodiments within the scope of the claims are equally applicable.

  FIG. 1 is a front view showing a shower head with a water purification function according to an embodiment of the present invention, FIG. 2 is a view showing the shower head with a water purification function of the present invention, and FIG. 2 (a) is a water purification function of FIG. A sectional view of the attached shower head cut in the axial direction, viewed from the front, FIG. 2 (b) is an enlarged sectional view of part A of FIG. 2 (a), and FIG. 3 is an exploded view of FIG. 4 is an enlarged view of the main body housing and valve seat packing of FIG. 3, FIG. 4 (a) is a sectional view, and FIG. 4 (b) is a portion B of FIG. 4 (a). 5 is an enlarged cross-sectional view, FIG. 5 is a view showing the main body housing, FIG. 5A is a view seen from the direction C in FIG. 4A, and FIG. 5B is an enlarged view of a D portion in FIG. FIG. 6 and FIG. 6 are views showing the rotation shaft, FIG. 6A is a front view, FIG. 6B is a cross-sectional view of the rotation shaft of FIG. 7A and 7B are diagrams showing the rotation axis, FIG. 7A is a view seen from the E direction of FIG. 6A, FIG. 7B is a view seen from the F direction of FIG. 8 is a view showing the valve seat packing, FIG. 8 (a) is a front view, FIG. 8 (b) is a sectional view taken along the line GG of FIG. 8 (a), and FIG. It is a figure which shows and shows each switching state of a flow path and a fluid. Incidentally, FIG. 5 shows only the main body housing and shows a state where the valve seat packing is not attached.

  As shown in FIG. 1, the shower head SH with a water purification function includes a cylindrical gripping portion I that is formed in a size that can accommodate the water purification cartridge 10 and a cylinder that is detachably connected to the tip of the gripping portion I. A cylindrical head II having substantially the same size as the gripping part I, the flow path switching mechanism Va is built in the cylindrical head II, and the discharge cap 23a and the cylindrical head II are formed on one side wall surface. The operation handle 70 is provided above the head.

As shown in FIGS. 2A and 3, the cylindrical gripping portion I includes an inner cylindrical case 10 in which the water quality purification cartridge 14 is accommodated, and an outer cylindrical case 13 that covers the inner cylindrical case 10. The inner cylinder case 10 is made of a material having heat resistance and pressure resistance, and the outer cylinder case 13 is made of a material that can be used for decorative plating or the like. The cylindrical gripping portion I is formed to a thickness that can be gripped with one hand.
The inner cylinder case 10 has openings 11 and 12 at both ends, and a hose connection portion 11a is formed in the opening 11 at one end so that a hose such as a mixed water tap can be connected. The opening 12 at the other end is formed with a coupling portion 12a that can be detachably coupled to the main body housing 20 of the cylindrical head II. The outer cylinder case 13 is slightly larger than the inner cylinder case 10 and has substantially the same shape so as to cover the outer periphery of the inner cylinder case 10.

  The cylindrical head II includes a cylindrical main body housing 20 constituting the flow path switching mechanism Va, and an outer cylinder case 29 that covers the outer periphery of the main body housing 20, and the flow path switching mechanism Va is provided above the head. An operating handle 70 to be operated is attached.

  As the water purification cartridge 14, a hollow fiber membrane portion 14b and an activated carbon portion 14a are arranged in series, and the outer periphery of the hollow fiber membrane portion 14b is surrounded by a cylindrical body. When the raw water is supplied from the opening 11 at one end, the water purification cartridge 14 having this structure passes from the outer periphery of the activated carbon portion 14a to the center, and further passes through the hollow fiber membrane portion 14b, and then the opening 12 at the other end. Spilled from. The water purification cartridge is not limited to the above type, and any known cartridge may be used.

  As shown in FIGS. 2 and 3, the flow path switching mechanism Va includes a cylindrical main body housing 20 having a through hole 22 having a predetermined shape at the center, and a disk shape that is inserted into the through hole 22 and switches the flow path. A rotating body (rotating disc) 32, a rotating shaft 30 having one end connected to the rotating disc 32 and rotating the rotating disc 32, and a valve seat packing 40 mounted on the partition wall 25 in the through hole 22. A cartridge connection pipe 60 coupled to the one end opening 12 of the through hole 22, a coiled spring 45, a spring retainer 50, and an operation handle 70 coupled to one end of the rotary shaft 30. The through-hole 22 of the main body housing 20 is divided into two through-holes 22 a and 22 b by a partition wall 25, but communicates with a hole 22 c formed in the partition wall 25.

As shown in FIGS. 2 to 4, the main body housing 20 has a straight cylindrical body 21 having a circular through hole 22 at the center in the longitudinal direction, and branches outward from one side surface of the cylindrical body 21. The discharge port 23 is formed with partitioned first and second flow paths 24a and 24b. The first flow path 24a is a through hole 22a, and the second flow path 24b is a through hole 22b. Communicating with
The openings 21a and 21b at both ends of the through hole 22 are formed to have a relatively large diameter, the cartridge connection pipe 60 is coupled to the opening 21a, and a plate 65 that supports the rotating shaft 30 is formed in the opening 21b. Installed.
Moreover, the opening part of the discharge port 23, ie, the edge part of the 1st, 2nd flow paths 24a and 24b, the discharge cap 23a is mounted | worn, and it becomes the discharge port of straight shape and shower shape.

Further, a partition wall 25 is formed in the through hole 22 so as to close the through hole 22 at substantially the middle part thereof. The partition wall 25 is thin and has a disk shape and is integrally formed with the main body.
As shown in FIGS. 4 (a), 4 (b), 5 (a), and 5 (b), the partition wall 25 has a small hole 22c through which the rotary shaft 30 is inserted, that is, an insertion hole 22c. Is formed. Further, the surface 25a of the partition wall 25 is a surface to be a contact surface that comes into contact with the rotating disk 32 described later. On this surface, there are two concentric circles separated by a predetermined distance from the insertion hole 22c. The holes 26a and 26b, that is, the first and second outflow holes, and the two closing portions 27a and 27b, that is, the first and second convex portions are respectively set at a predetermined angle with respect to the insertion hole 22c. Are shifted by 90 degrees.
As shown in FIGS. 5A and 5B, the first and second outflow holes 26a and 26b are formed in a sectoral elliptical shape and have a predetermined length from the outer periphery of the sectoral elliptical hole. The cylindrical body is extended. Moreover, the 1st, 2nd convex-shaped parts 27a and 27b are formed from the cylinder which has the same length as the said fan-shaped elliptical cylindrical body.

  By making the first and second outflow holes 26a, 26b into an elliptical shape, the opening area of the holes can be enlarged. That is, in order to make the diameter of the cylindrical head part II substantially the same as the diameter of the cylindrical gripping part I, the area of the partition wall 25 must be reduced accordingly, but the first and second outflow holes 26a, By making the shape of 26b into a sector oval shape, for example, the opening area can be made larger than that of a circular outflow hole. Therefore, by increasing the opening area, it is possible to increase the amount of fluid flowing through the hole.

Further, end portions 26a 'and 26b' (not shown) of the cylindrical body provided around the outer periphery of the first and second outflow holes 26a and 26b, for example, a valve seat packing 40 described later in the first outflow hole 26a. When mounted, the end of the valve seat packing 40 functions as a support for preventing the end of the valve seat packing 40 from falling into the first outflow hole 26a due to the hydraulic pressure of the fluid flowing through the through hole 22 (see FIG. 4B). .
Furthermore, at the edge of the surface 25a of the partition wall 25, as shown in FIG. 4 and FIG. 5A, on the outer circumference circle of each sector-shaped elliptical hole and each convex-shaped part, equally spaced, for example, every 90 degrees. In addition, substantially V-shaped depressions 28a to 28d are formed. These recesses 28a to 28d are engaged with protrusions 35a to 35d (see FIG. 7B) provided on the rotating disk 32 of the rotating shaft 30, and serve to position the rotating shaft.

Furthermore, as shown in FIGS. 4 and 5A, the rear surface 25b of the partition wall communicates with the first and second outflow holes 26a and 26b, and is divided into first and second outflow passages 24a, 24b is formed, the first outflow hole 26a is connected to the first outflow path 24a, and the second outflow hole 26b is connected to the second outflow path 24b.
Raw water or purified water is discharged straight from the discharge port of the first outflow passage 24a, and raw water or purified water is discharged from the discharge port of the second outflow passage 24b in a shower shape.

As shown in FIGS. 6 and 7, the rotating shaft 30 includes an elongated rod-shaped body 31 and a rotating disk 32 integrally provided at one end of the rod-shaped body 31, and the rotating disk 32 is a surface of the partition wall 25. The first and second outflow holes 26a and 26b and the first and second convex portions 27a and 27b provided in 25a are brought into contact with each other to switch the flow paths. An operation handle 70 can be attached to the other end 31 a of the rod-shaped body 31.
As shown in FIG. 6B, the rotating disc 32 extends in a direction away from the surface 32b of the rotating disc 32, and has a cylindrical body 33 having a hole 34 at the center thereof, two holes 34a, 34b is formed.

The cylindrical body 33 has a thickness and a length into which one end of the cartridge connection pipe 60 is fitted. The two holes 34a and 34b serve as first and second valve ports and are connected to different flow paths, respectively. That is, as shown in FIG. 6B, the first valve port 34a is formed so as to communicate from the inside of the cylindrical body 33 to the back surface 32a of the rotating disk 32, and the second valve port 34b is formed as a rotating circle. It is formed so as to penetrate a part of the plate 32. The first and second valve ports 34a and 34b are provided at positions facing each other from the center on the rotating disk 32 as shown in FIGS. 7 (a) and 7 (b).
Furthermore, as shown in FIG. 7B, four protrusions 35a to 35d are formed on the back surface 32a of the rotating disk 32, that is, the surface opposite to the side on which the cylindrical body 33 is provided. . These protrusions 35a to 35d are provided on concentric circles shifted by 90 degrees so as to engage with the recesses 28a to 28d shown in FIG.

  As shown in FIG. 8, the valve seat packing 40 is provided with an insertion hole 42 at the center of a circular base material 41, and four short cylindrical bodies 43 a to 43 d are formed around the insertion hole 42. It has a provided structure and is made of an elastic material such as a rubber material. The diameter of the base material 41 is formed slightly smaller than the diameter of the through hole 22a, and the height of the cylindrical body is the first and second outflow holes 26a and 26b and the first and second convex portions 27a, It is formed slightly longer than the length of 27b. Of these cylindrical bodies 43a to 43d, the cylindrical bodies 43a and 43b are shaped to fit into the first and second outflow holes 26a and 26b, that is, elliptical, and the cylindrical bodies 43c and 43d are 1. It is formed in a shape that fits into the first and second convex portions 27a, 27b, that is, a circular shape. In addition, each cylindrical body 43a to 43d is connected by a substrate 41, and each cylindrical body 43a to 43d is tapered to a distal end portion 43a ′ as seen in the one cylindrical body 43a. Is attached.

  Below, the assembly of the shower head SH with a water purification function using these components is demonstrated with reference to FIGS.

First, the valve seat packing 40 is mounted on the partition wall 25 in the main body housing 20. At this time, the cylindrical bodies 43a and 43b of the valve seat packing 40 are respectively connected to the first and second outflow holes 26a and 26b of the partition wall 25, and the cylindrical bodies 43c and 43d are respectively connected to the first and second convex portions 27a and 27b. It is attached so that the circular base 41 is in contact with the partition wall 25. Next, the rotary shaft 30 is inserted into the insertion hole 22 c of the partition wall 25, one end of the rod-shaped body 31 is projected from the opening 21 b of the main body housing 20, and the rod-shaped body 31 is passed through the insertion hole of the plate 65. It fixes to the opening part 21b. Further, an operation handle 70 is attached to the tip of the rod-shaped body 31.
Thereafter, one end of the coiled spring 45 is brought into contact with the rotating disk 32 and the other end is brought into contact with the spring retainer 50 and inserted into the through hole 22 of the main body housing 20. Next, the cartridge connection pipe 60 is positioned and fixed in the through hole 22a at one end of the main body housing. This positioning and fixing is performed by fitting the rib 60 a of the cartridge connection pipe 60 into the groove 21 c of the main body housing 20. An outer cylinder case 13 and a case 29 are attached to the inner cylinder case 10 and the main body housing 20, and a discharge cap 23a is attached to the discharge port.

  Switching of the flow path of the shower head SH with the water purification function assembled in this way will be described below with reference to FIG. FIG. 9 illustrates the relationship between the first and second outflow holes 26a and 26b and the first and second protrusions 27a and 27b of the partition wall 25, and the first and second valve ports 34a and 34b of the rotating disk 32. It is explanatory drawing.

(1) When the raw water straight rotating disc 32 is in the position shown in FIG. 9A, the second valve port 34b and the first outflow hole 26a communicate with each other. The raw water flowing in from the opening 11 of the inner cylinder case 10 passes through a gap a between the inner cylinder case 10 and the outer peripheral surface of the water purification cartridge 14 as shown in FIG. It passes through the two valve ports 34b and the first outflow hole 26a, and is discharged straight from the first flow path 24a. At this time, the first valve port 34a is closed by the first convex portion 27a and the cylindrical body 43c of the valve seat packing 40, so that no liquid leaks. More specifically, the dynamic pressure of the fluid flowing through the first valve port 34a and the first outlet hole 26a and _{P 1,} the hydrostatic pressure exerted on the second valve port 34b and _{P 2,} channel through the first outlet hole 26a the raw water that hydrodynamic P ₁ is lowered by the flow, whereas the hydrostatic pressure P ₂ applied to the second valve port 34b is increased. In this relationship, P ₁ <P ₂ , but since the first convex portion 27a is formed in a cylindrical shape and the surface thereof is circular, the area of this circle is the elliptical shape of the first outflow hole 26a. becomes smaller, the dynamic pressure P ₁ becomes smaller. Therefore, large even hydrostatic pressure P ₂ is applied is rotating disk 32 is not Na away from the partition wall 25. At this time, the second outflow hole 26 b is closed by the rotating disk 32.

(2) Raw water shower When the rotary disc 32 is rotated clockwise and moved to the position shown in FIG. 9B, the second valve port 34b and the second outlet hole 26b communicate with each other, and the raw water flows into the second flow. It is discharged in a shower form from the passage 24b. At this time, the first valve port 34 a is closed by the second convex portion 27 b and the first outflow hole 26 a is closed by the rotating disk 32.

(3) When the water purification straight rotating disc 32 is further rotated clockwise and moved to the position shown in FIG. 9C, the first valve port 34a communicates with the first outflow hole 26a. At this time, the raw water flowing from the opening 11 of the inner cylinder case 10 is purified through the water purification cartridge 14 and discharged straight from the first flow path 24a. At this time, the second valve port 34 b is closed by the first convex portion 27 a and the second outflow hole 26 b is closed by the rotating disk 32.

(4) is rotated in the purified water shower rotary disk further clockwise, Figure 9 when moving to the position (d), the through the first valve port 34 a and the second outflow hole 26b are communicated, purified water first It is discharged in a shower form from the flow path 24b. At this time, the second valve port 34 b is closed by the second convex portion 27 b and the first outflow hole 26 a is closed by the rotating disk 32. In addition, since the pressure loss due to the water quality purification cartridge 14 is large and a sufficient shower flow rate cannot be obtained, when the water purification shower is practically omitted, the operating range of the operation handle 70 is limited by providing a stopper on the main body side. Thus, the switching of the above (4) is disabled.

At the time of switching between (1) to (4), the valve seat packing 40 is mounted on the contact surface of the partition wall 25, so that the rotating disc 32 presses the surface of the valve seat packing 40 with the coil spring 45. It will slide while being done. At this time, four protrusions 35a to 35d (see FIG. 7B) on the outer periphery of the rotating disk 32, and four depressions 28a to 28d (see FIG. 5A) on the surface 25a of the partition wall 25. since is provided, in the state of (1) to (4), each projection 35a~35d are engaged with the respective recess 28a to 28d. Hand, upon switching, the rotation disc 32 is rotated clockwise or counterclockwise, the time projection 35a~35d exits recess 28a to 28d, and slides on the outer peripheral surface of the partition wall, adjacent It is moved to the dent. At this time, since the rotating disk is pressed by the coiled spring 45, it resists this spring pressure, that is, the rotating shaft 30 is slightly slid in the axial direction to slide on the outer peripheral surface of the partition wall. Become.

As described above, when the flow path or the like is switched, the rotary shaft 30 is temporarily slid in the axial direction, and a gap is formed between the valve seat packing 40 and the seal surface of the rotary shaft 30. Relax. Moreover, it can be alleviated pressure rise in the inner portion together when to relax the sliding resistance of the valve seat packing 40 of switching.

Further, according to the present invention, since the water purification cartridge 14 can be accommodated in the cylindrical gripping portion I, replacement, repair, inspection and the like are facilitated. Further, since the cylindrical head is formed of a cylindrical body having substantially the same diameter as II and the cylindrical gripping portion I, the head can be made small, and the overall size can be reduced.
Furthermore, since the operation handle 70 is provided above the head of the cylindrical head II, even when washing the hair with the left or right hand when washing the hair, etc. Can be operated, so the operation becomes extremely simple.

FIG. 1 is a front view showing a shower head with a water purification function according to an embodiment of the present invention, FIG. 2 is a view showing a shower head with a water purification function of the present invention, and FIG. 2 (a) is a sectional view of the shower head with a water purification function of FIG. Is an enlarged cross-sectional view of part A in FIG. FIG. 3 is an exploded cross-sectional view showing FIG. 4 is an enlarged view of the main body housing and valve seat packing of FIG. 3, FIG. 4 (a) is a cross-sectional view, FIG. 4 (b) is an enlarged cross-sectional view of a B portion of FIG. 4 (a), FIG. 5 is a view showing the main body housing, FIG. 5 (a) is a view seen from the direction C of FIG. 4 (a), FIG. 5 (b) is an enlarged view of a portion D of FIG. 5 (a), 6A and 6B are diagrams showing a rotation shaft, FIG. 6A is a front view, FIG. 6B is a sectional view of the rotation shaft of FIG. FIG. 7 is a view showing a rotation axis, FIG. 7 (a) is a view seen from the E direction of FIG. 6 (a), FIG. 7 (b) is a view seen from the F direction of FIG. 6 (a), FIG. 8 is a view showing the valve seat packing, FIG. 8 (a) is a front view, FIG. 8 (b) is a sectional view taken along line GG in FIG. 8 (a), FIG. 9 shows the relationship between the partition wall and the rotating disk, and shows the switching states of the flow path and the fluid. FIG. 10 is a sectional view of a conventional water purifier.

Explanation of symbols

SH Shower head with water purification function I Tubular grip
II Cylindrical head Va Flow path switching mechanism 10 Inner cylinder case 11, 12 Opening part 13 Outer cylinder case 14 Water purification cartridge 20 Main body housing 21 Cylindrical body 22 Through hole 23 Discharge port 25 Partition walls 26a, 26b First, first 2 Outflow holes 27a, 27b First and second convex portions 30 Rotating shaft 31 Rod-shaped body 32 Rotating disk (rotating body)
34a, 34b First and second valve ports 40 Valve seat packing 45 Coil spring 50 Spring retainer 60 Cartridge connection pipe 70 Operation handle

Claims (4)

A cylindrical gripping part containing a water purification cartridge; a cylindrical head part which is detachably provided at one end of the cylindrical gripping part and has a flow path switching mechanism therein; With
The flow path switching mechanism is formed in the cylindrical housing of the cylindrical head, has an insertion hole in the center, and the first and second closing portions and the first and second outflows on the outer periphery of the insertion hole. One shaft end includes a partition having first and second outflow holes communicating with the passage, and a rotary body having first and second valve ports communicating with the first and second inflow passages in the cylindrical housing. A rotation axis,
The rotating body is pressed toward the partition by a spring,
An operation handle connected to the rotating body and mounted on the head of the cylindrical head is rotated so that the first or second outflow hole of the partition wall and the first or second valve port of the rotating body communicate with each other. In the shower head with water purification function that switches the flow path by
A plurality of recesses or projections are provided at substantially equal intervals on the outer circumference of the partition wall, and the same number corresponding to the recesses or projections of the partition wall is provided on the outer circumference of the rotating body corresponding to the partition wall. Convex or concave is provided,
When the flow path switching is performed, when the convex portion provided in one of the rotating body or the partition comes out of the concave portion provided in the other of the rotating body or the partition, the rotating shaft is Slides axially against the spring,
In accordance with the rotation of the rotating body slid in the axial direction, the convex portion slides and rotates on the surface of the partition wall, and is moved to the adjacent concave portion. . The flow path switching mechanism includes the first and second closing portions, the first and second outlet holes, and the first and second valve ports.
When the first valve port communicates with the first outflow hole of the partition wall, the second valve port is closed by the first closing portion, and the second outflow hole is closed by the wall surface of the rotating body. And
When the first valve port communicates with the second outflow hole of the partition wall, the second valve port is closed by the second closing portion, and the first outflow hole is closed by the wall surface of the rotating body. And
When the second valve port communicates with the first outflow hole of the partition wall, the first valve port is closed by the first closing portion, and the second outflow hole is closed by the wall surface of the rotating body. And
When the second valve port communicates with the second outflow hole of the partition wall, the first valve port is closed by the second closing portion, and the first outflow hole is closed by the wall surface of the rotating body. The shower head with a water purifying function according to claim 1, wherein the shower head is provided at each of the positions.   The plane of the first and second outflow holes is substantially elliptical, and at least one plane of the first and second valve ports is substantially elliptical. Shower head with water purification function.   The first and second closing portions of the partition wall and the outer peripheral portions of the first and second outflow holes are all made of a convex body, and a valve seat packing is inserted into the outer peripheral surface of the convex body. The shower head with a water purifying function according to any one of claims 1 to 3.

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