JPH09168708A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely perform changeover of a flow path by constituting a multiple port valve provided with both of a reciprocatively movable member for communicating displacement of a push member to an abutting member and of a temporarily stopping mechanism that is engaged with the reciprocatively movable member to temporarily stop movement thereof an maintains the opening/closing state of an outflow port. SOLUTION: An abutting member 41 exists in a first stopping position through a reciprocating shaft 42 in a state in which a push buttom 10 is not pushed. Raw water introduced from an inflow port 21 is passed through an outflow port 32 and supplied to a filter part. Then, when the push button 10 is pushed, a rotary cam 81 is slid through a rotary cam projected line 81a engaged with the oblique tip of a reciprocating cam projected line 71a. The reciprocating shaft 42 and the abutting member 41 are moved to a second stop position. When the rotating cam projected line 81a is slipped out of a deep groove 62, the projected line 81a is slid along an ablique tip of a guide projected line 65 and the rotary cam 81 is rotated by half pitch. As a result, such a flow path is built up as raw water introduced from the inflow port 21 is passed through an outflow port 31 and discharged from a shower discharge port 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier provided with a multi-way valve for switching inflowing raw water to a plurality of outflow destinations,
In particular, the present invention relates to a technique of switching a flow path by a pushing member.

[0002]

2. Description of the Related Art A water purifier attached to a water tap of a general household has a flow path communicating with a filtering section containing a filter medium for purifying the inflowing raw water, or the inflowing raw water as it is as shower water or straight water. A multi-way valve that switches to a plurality of outflow destinations such as a flow path for flowing out as water is provided.

As a multi-way valve of this type, a Japanese Utility Model Sho 63-8
As described in Japanese Unexamined Patent Publication No. 460 and Japanese Utility Model Laid-Open No. 60-197272, a cylinder-piston type including a cylinder having an inflow port and an outflow port, and a piston having a seal member that slides in the cylinder. There is one.

Further, like the switching valves described in JP-A-48-10631 and JP-A-52-45732, the flow outlet is closed with a ball, and the ball is moved when opening. There is also a ball type that is configured as described above.

[0005]

However, in the former cylinder-piston type multi-way valve, the seal member fixed to the piston slides while being pressed on the inlet or outlet of the cylinder. There is a problem that it wears quickly and must be replaced in a short period of time.

On the other hand, the latter ball type multi-way valve is
Since the flow path is switched by rolling the ball, which is the seal member, the problem due to wear as in the former is improved. However, since the operating lever connected to the actuating body that moves the ball penetrates the valve box and both ends project outside the valve box, one end of the lever is grasped and pulled out or the other side is pushed in the switching operation. There is a problem that it is inconvenient because it is necessary to rotate a finger to push the other end of the lever.

Therefore, according to the ball type running water switching device for faucet described in Japanese Utility Model Publication No. 51-26357,
It can be operated with only one end of the operating lever, but the rotating shaft of the operating lever that penetrates vertically through the floor of the switching chamber must have a certain length, and a seal member must be provided to seal the rotating shaft. Therefore, the main body tends to be large in the vertical direction, which is not preferable especially for faucets in general households. Furthermore, in many general household faucets, the discharge pipe rotates left and right (clockwise and counterclockwise), so the method of operating the operation lever left and right is difficult to operate because the discharge pipe rotates left and right together. There is a problem.

Further, the ball-type water stopcock with a purifying device described in Japanese Patent Publication No. 5-31036 can be operated by an operating lever acting in the front-back direction with respect to the discharge pipe, but the ball can be moved. Since the same number of push rods, springs, and sealing members as the outlets are required, there is a problem that the number of parts increases and the structure becomes complicated.

The present invention has been made in view of the above circumstances, and it is possible to easily and reliably switch the flow paths, and the switching operation mechanism of the multi-way valve is simply configured. The purpose is to provide a water purifier.

[0010]

The present invention has the following configuration in order to achieve the above object. That is, the invention according to claim 1 is a water purifier that includes a multi-way valve that switches inflowing raw water to a plurality of outflow destinations, and a filtering unit that filters the inflowing raw water through the multi-way valve. A valve case having an inlet and a plurality of outlets,
At least one sphere provided in the valve case for opening and closing the outlet, and a state in which the sphere closes the outlet by contacting the sphere to displace the sphere, and the sphere closes the outlet. An abutting member that creates an open state, a pushing member that is attached to the valve case and that pushes and operates the abutting member when opening and closing the outlet, and is interposed between the pushing member and the abutting member. , A reciprocating movable member capable of reciprocating the displacement of the pushing member due to the pushing operation to the contact member, and engaging the reciprocating movable member to temporarily stop the movement at a plurality of predetermined positions. And a temporary stop mechanism for maintaining the open / closed state of the outlet by the sphere.

The invention according to claim 2 is the water purifier according to claim 1, wherein the temporary stop mechanism includes a plurality of deep grooves alternating with the deep grooves and the same number of shallow grooves. Between the shallow groove and the shallow groove, there is a guide tube in which a guide ridge is engraved in the axial direction of the inner peripheral surface, a reciprocating cam having a reciprocating cam ridge that can slide along the deep groove and the shallow groove, and along the deep groove. A rotary cam that is slidable and slidable, is engaged with the reciprocating movable member, and a biasing means that biases the reciprocating movable member in the direction of the rotary cam. The guide ridges and the tips of the shallow grooves are inclined surfaces.

According to a third aspect of the present invention, in the water purifier according to the first or second aspect, the valve case is provided with a rotation suppressing member that suppresses rotation of the contact member. .

The invention according to claim 4 is the water purifier according to any one of claims 1 to 3, wherein the abutting member abuts on a spherical portion on the outlet side of the center of gravity of the sphere. It works in close contact.

The invention according to claim 5 is the water purifier according to any one of claims 1 to 4, wherein the ratio of the diameter of the sphere to the inner diameter of the outlet is 1: 0.3. ~
It is 1: 0.8.

[0015]

The operation of the present invention is as follows. That is,
In the invention according to claim 1, when the pushing member attached to the valve case of the multi-way valve is pushed, the reciprocating movable member transmits the displacement of the pushing member to the contact member in the valve case. This causes the abutment member to displace at least one sphere. The sphere closes (or opens) a plurality of outlets provided in the valve case. At this time, the temporary stop mechanism acts to temporarily stop the reciprocating movable member at a predetermined position, and the sphere is maintained in a state of closing (or opening) the outflow port. When the pushing member is pushed again, the temporary stop mechanism is released, the reciprocating movable member returns, and the sphere opens (or closes) the outflow port via the contact member. By the operation of this multi-way valve, the raw water that has flowed into the water purifier can be appropriately switched to a plurality of outflow destinations such as the filtration unit and the raw water discharge port.

According to the second aspect of the present invention, the reciprocating cam is slid along the deep groove and the shallow groove of the guide cylinder by the pushing operation of the pushing member, and the rotary cam ridge meshing with the reciprocating cam ridge is formed. By sliding in the deep groove, the rotating cam also slides in the guide tube. When the rotating cam ridge is pushed to the tip of the guide ridge, the rotating cam ridge slides along the inclined surface at the tip of the guide ridge by the action of the biasing means, so that the rotary cam is adjacent to the shallow groove. It is locked to the guide ridge. As a result, the reciprocating movable member and the contact member engaged with the rotary cam are temporarily stopped at the predetermined position. When the pushing member is pushed again, the locked rotating cam ridge is pushed by the reciprocating cam ridge, and the biasing means acts at the tip of the guide ridge, so that it follows the inclined surface of the adjacent guide ridge. As a result, the rotary cam ridge slides, and the rotary cam ridge slides in the adjacent deep groove to return to the initial state.

According to the third aspect of the present invention, when the contact member moves via the reciprocating movable member, the contact member is operated in a stable state by the rotation suppressing member provided in the valve case.

Further, in the invention according to claim 4, when the outlet is opened, the contact member abuts on the spherical surface of the portion closer to the outlet than the center of gravity of the ball, thereby closing the outlet. The sphere inside is pushed up with a small force.

Further, in the invention according to claim 5, the ratio of the outer diameter of the sphere to the inner diameter of the outlet is 1: 0.3 to 1: 0.8, so that the sphere does not fit deeply into the outlet. Absent.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the present embodiment, for example, a water purifier equipped with a ball-type multi-way valve attached to a domestic water faucet will be described as an example. 1 is a front view showing a state in which a water purifier according to an embodiment is attached to a water faucet, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is B in FIG.
-B arrow sectional view, FIG. 4 is a CC arrow sectional view in FIG.

As shown in FIG. 1, this water purifier 1 is composed of a valve body (hereinafter, simply referred to as a body) 2 having a multi-way valve structure built therein, and a filter section 3 containing a filter medium. A water faucet 4 is attached to the upper part of the main body 2. In the present embodiment, detailed description of the filtering unit 3 will be omitted.

As shown in FIGS. 2 to 4, the main body 2 is
By the valve case 7 arranged in the housing 6, the two balls (spheres) 11 and 12 arranged in the valve case 7 to form the multi-way valve 5, and the push button 10 provided in the front part of the housing 6. A valve mechanism including a valve operating portion 8 for operating the balls (hereinafter referred to as first ball and second ball) 11 and 12 is provided.

An upper portion of the valve case 7 projects from an upper opening of the housing 6, and a bottom portion of the valve case 7 is screwed and fixed to the housing 6 so as to swing forward. Also, the valve case 7
A ring-shaped packing 15 is fitted in a stepped portion on the upper part of the mounting nut 1 through a split ring 16 fitted in a bulging portion of the water faucet 4 shown by a chain double-dashed line in FIG.
By screwing 7 into the upper part of the valve case 7, the water purifier 1
Is attached to the water faucet 4.

As shown in FIG. 3, in the lower part of the housing 6, a shower discharge port 18 for discharging the raw water received from the water faucet 4 as it is as shower water, and a filtration for supplying the received raw water to the filtration unit 3. A part supply port 19 is provided. That is, the ball-type multi-way valve 5 provided in the water purifier 1 of the present embodiment is either a flow path to the shower discharge port 18 that directly uses the raw water from the water tap 4 or a filtration unit supply port for purifying the raw water. It is for switching the flow path to 19. A packing 20 is interposed between the housing 6 and the valve case 7 inside the shower discharge port 18.

The valve mechanism of the multi-way valve 5 will be described below. A plate-shaped member 22 having a large number of small holes is fitted into the raw water inlet 21 of the valve case 7. And
As shown in FIGS. 2 and 4, the bottom portion of the valve case 7 has a first outlet 31 communicating with the shower outlet 18 and a second outlet 32 communicating with the filtering portion supply port 19 with their front and rear positions displaced from each other. It has been opened up. The plate-like member 22 of the raw water inlet 21 moderates the force of the raw water received from the tap 4 so that the raw water smoothly flows into the valve case 7. It should be noted that the plate-shaped member 22 does not need to be provided when the force of the raw water is weak.

The valve case 7 accommodates the first ball 11 for opening and closing the first outlet 31 and the second ball 12 for opening and closing the second outlet 32. The first and second balls 11 and 12 are made of rubber such as nitrile rubber, silicon rubber, and fluorine rubber. The rubber hardness is preferably 40 to 90 degrees, and rubber, which is an elastic body, exhibits good sealing properties. Further, the ratio between the diameter of the first ball 11 and the inner diameter of the first outlet 31 is such that the first ball 11 does not fit deeply into the first outlet 31 and the pressure loss as a flow path does not increase. , 1: 0.3 ~
It is preferably 1: 0.8. This is the second ball 1
The same applies to the outer diameter of 2 and the inner diameter of the second outlet 32. The material of the first and second balls 11 and 12 is not limited to rubber, but may be metal such as iron, stainless steel, aluminum, ABS resin, plastic such as polypropylene, or ceramics. When it is made of a relatively hard material such as metal or ceramics, the first and second outlets 31, 32 of the valve case 7 facing each other are used.
If rubber is attached to the contact portions with the balls 11 and 12 when the ball is closed, good sealing property can be obtained. In addition, if a metal is built in the balls 11 and 12 as a core, the weight becomes heavy, and in addition to the water pressure of tap water, there is an effect that the sealing property at the time of closing is improved.

Next, the valve operating portion 8 will be described with reference to FIG. FIG. 5 is an exploded perspective view of the valve operating unit 8 with the push button 10 removed. As shown in FIG. 5, the valve operating unit 8
Is an abutting member 41 that abuts and supports the first and second balls 11 and 12 in the valve case 7, a push button 10 attached to the front surface of the housing 6, and a displacement of the push button 10 due to a pushing operation. And a reciprocating shaft (reciprocating movable member) 42 capable of reciprocating in the front-rear direction, and a temporary stop which is interposed between the push button 10 and the reciprocating shaft 42 and temporarily stops the movement of the reciprocating shaft 42 at a predetermined position. And the mechanism 43.

As shown in FIGS. 2 to 5, the contact member 4
Reference numeral 1 is adapted to support the first and second balls 11 and 12 in a rollable manner and to slide the inner lower surface of the valve case 7 in the front-rear direction. That is, the abutting member 41 has first and second support holes 51, 52 whose inner surface is formed in a mortar shape.
Are provided, and the first and second balls 11 and 12 are provided here.
Is stuck. The first and second balls 1 supported by sliding the contact member 41 in the front-rear direction
1 and 12 are fitted into either of the first and second outlets 31 and 32 formed by shifting the front and rear positions as shown in FIGS. 3 and 4 to close the one outlet 31 (32). And the other outlet 32 (31) is opened.

Further, a rotation suppressing convex portion 53 is provided on the upper surface of the contact member 41, and the convex portion 53 is formed in the rotation suppressing concave portion 54 provided on the lower surface of the plate member 22 of the raw water inlet 21. It is slidably inserted. This is to slide the contact member 41 in a stable state so that the contact member 41 does not rotate in relation to a slide operation described later. Further, cutout portions 56, 56 are formed on the lower surface of the contact member 41 at the peripheral portions of the first and second support holes 51, 52, respectively.
57 is formed, and the raw water easily flows into the outlets 31 and 32. Further, the reciprocating shaft 4 is provided on the front surface of the contact member 41.
A connection hole 58 for connecting with 2 is formed.

The abutment member 41 is arranged such that the axis of the reciprocating shaft 42 is eccentric from the center of gravity Q of the ball 11 (12) by E, so that the first outlet 31 (or the second outlet 32). ), The first ball 11 (or the second ball 12) whose lower part has fallen in contact with a spherical portion closer to the outlet 31 (32) than the center of gravity Q of the ball 11 (12), and is relatively light. The outlet 31 (32) can be switched from the closed state to the open state by an operating force. As shown in FIG. 6, the contact member 41 causes the center of gravity Q of the ball 11 (12) to be Q.
When contacting the upper spherical portion, the ball 1
Since a downward force (an arrow in FIG. 6) that presses 1 (12) against the outflow port works, the outflow port 31 (32) cannot be opened, but an unnecessarily large force is required.

The abutting member 41 has a branch-like portion as shown in FIG. 7 or a cap-like portion as shown in FIG. 8 at a portion for abutting and supporting the first and second balls 11, 12, respectively. It may be formed. Further, the rotation suppressing convex portion 53
May have a columnar shape or a conical shape as shown in FIGS. Further, the rotation suppressing convex portion 53 and the rotation suppressing concave portion 5
Although 4 is provided so as to act on the upper portion of the contact member 41, it may be provided on the side surface or the bottom surface of the contact member 41.

As shown in FIGS. 2 and 5, the valve case 7
A reciprocating shaft (reciprocating movable member) 42 for sliding the contact member 41 in the front-rear direction is slidably inserted in the front surface of the contact member 41, and a tip of the reciprocating shaft 42 is connected to a connecting hole 58 formed in the front surface of the contact member 41. When fitted together, the contact member 41 and the reciprocating shaft 42 are integrated. In the state shown in FIG. 4, the first outlet 31 is closed by the first ball 11 and the second outlet 32 is opened in the process of the reciprocating shaft 42 and the contact member 41 reciprocating. The first stop position P1 is set. Push button 1
The pushing operation of 0 moves the reciprocating shaft 42 rearward (right side in FIG. 4) via a temporary stop mechanism 43, which will be described in detail later, and in conjunction with this, the contact member 41 moves from the first outlet 31 to the first ball. By forcibly displacing 11, the first outlet 31 is opened, and the second ball 12 is inserted into the second outlet 32.
And the second outlet 32 is closed.
This is the second stop position P2. The portion where the reciprocating shaft 42 is inserted into the valve case 7 is sealed by a packing 59, and the packing 59 is pressed by a guide cylinder 61 of a temporary stop mechanism 43 described later via a collar 60.

As shown in FIGS. 2 and 5, the temporary stop mechanism 4
3 is a guide cylinder 61 screwed and fixed to the front surface of the valve case 7.
And the push button 1 is inserted up to the inner tip of the guide tube 61.
The reciprocating cam 71 that abuts on the reciprocating cam 71, the rotating cam ridge 81a that meshes with the reciprocating cam ridge 71a of the reciprocating cam 71, and the rotating cam 81 that is engaged with the other end of the reciprocating shaft 42 and the reciprocating shaft 42. And a spring (biasing means) 91 for biasing the front side (rotating cam 81). The temporary stop mechanism 43 is operated by pressing the push button 10 to move the reciprocating shaft 42.
The contact member 41 is temporarily stopped at each of the first stop position P1 and the second stop position P2 via.

FIG. 9 is a sectional view of the tapered tip portion of the inner peripheral surface of the guide cylinder 61, and FIG. 10 is a development view of the tip portion of the guide cylinder 61. As shown in FIG. 5, FIG. 9, and FIG. 10, the guide cylinder 61 has three deep grooves 62 in the axial direction of the inner peripheral surface at the tip thereof,
Three shallow grooves 63 are alternately engraved to form deep grooves 62 and shallow grooves 63.
Guide ridges 65 are formed between and. The tips of the shallow grooves 63 and the guide ridges 65 are inclined in the circumferential direction, and the tips of the adjacent shallow grooves 63 and the guide ridges 65 form a continuous inclined surface, forming a sawtooth shape as a whole. ing.

FIG. 11A is a side view of the reciprocating cam 71, and FIG. 11B is a front view thereof. 11 (a), 11 (b)
As shown in FIG. 5, the reciprocating cam 71 has six reciprocating cam ridges 71 a whose tip is mountain-shaped and extends in the axial direction. The reciprocating cam ridges 71 a are three deep grooves of the guide cylinder 61. The guide tube 61 is inserted into the guide tube 61 in such a manner that it can be slid by engaging with 62 and the three shallow grooves 63. At this time, the mountain-shaped tip faces the direction of the valve case 7 like the guide projection 65 of the guide cylinder 61 and the inclined tip of the shallow groove 63.

FIG. 12A is a side view of the rotary cam 81, and FIG. 12B is a front view thereof. As shown in FIG.
A front end portion 84 of the rotary cam 81 is inserted into the long hole 74 of the reciprocating cam 71, and the reciprocating shaft 4 is inserted into the inner hole 85 a of the rear end portion 85.
Two are involved. The rotary cam 81 has a guide tube 6 at its tip.
The first guide ridge 65 and the inclined tip of the shallow groove 63 have an inclined surface at substantially the same angle and have three rotary cam ridges 81a extending in the axial direction. The rotary cam protrusion 81 a is slidable while meshing with the three deep grooves 62 of the guide cylinder 61, but is prevented from entering the shallow groove 63. The rotating cam 81 is inserted into the guide cylinder 61 after the reciprocating cam 71. At this time, the tip end of the rotating cam protrusion 81a is reciprocating cam 71.
Facing the side.

As shown in FIG. 2, the spring 91 is interposed between the collar 60 locked by the threaded portion of the guide cylinder 61 and the collar portion 42a of the reciprocating shaft 42, and the reciprocating shaft 42 is always attached to the rotating cam 81. It is urged to touch.

Ball type multi-way valve 5 constructed as described above
In the water purifier 1 of this embodiment equipped with the above, the operation of the temporary stop mechanism 43 by the push operation of the push button 10 and the switching state of the flow path associated therewith will be described below.

13A to 13C are development views showing the operation of the temporary stop mechanism 43. As shown in FIG. FIG. 13A shows the reciprocating cam protrusion 71 a of the reciprocating cam 71 inserted into the deep groove 62 and the shallow groove 63 of the guide cylinder 61 of the temporary stop mechanism 43 to the inner part in a state where the push button 10 is not pressed. The rotating cam 81 so that the reciprocating cam protrusion 71a meshes with the deep groove 62.
The rotary cam ridge 81a is inserted and the rotary cam 81 is urged by the spring 91 via the reciprocating shaft 42. The reciprocating cam 71, the rotating cam 81, and the reciprocating shaft 42 are temporarily stopped. This state is the reciprocating shaft 4 as described above.
2, the contact member 41 is in the first stop position P1 (see FIGS. 3 and 4), and the first outlet 3 of the valve case 7
1 is closed by the first ball 11 and the second outlet 32 is open. That is, in this state, the raw water that has flowed in from the inflow port 21 passes through the second outflow port 32, is supplied to the filtration unit 3 through the filtration unit supply port 19, is filtered, and then flows out as purified water.

Here, when the push button 10 is pressed by the operator, the reciprocating cam 71 slides in the guide cylinder 61 in the direction of the valve case 7, and the rotary cam protrusion engaging with the inclined tip of the reciprocating cam protrusion 71a. The rotary cam 81 slides via the line 81a, and the reciprocating shaft 42 and the contact member 41 move toward the second stop position P2 (see FIGS. 2 and 4). 13B so that the tip of the reciprocating cam ridge 71a is along the inclined tip of the guide ridge 65 of the guide cylinder 61, in other words, when the rotary cam ridge 81a exits the deep groove 62, as shown in FIG. 9
Due to the urging of No. 1, the rotary cam ridge 81a slides along the inclined tip of the upper guide ridge 65, and as a result, the rotary cam 81 rotates a half pitch.

On the other hand, the sliding of the contact member 41 causes the lower portion of the first ball 1 to fall into the first outlet 31.
1 is pushed up and moved, and the first outlet 31 is opened. At this time, since the first ball 11 rolls in the valve case 7, it does not rub against the inner and lower surfaces of the valve case 7 and hardly wears. Therefore, replacement due to deterioration is extremely rare. Further, the outer diameter of the first ball 11 and the first outlet 31
Since the ratio of the inner diameter of the first ball 11 to the inner diameter of the first ball 11 is 1: 0.3 to 1: 0.8, the first ball 11 does not fit deeply into the first outlet 31, and the abutting member 41 is fixed to the first ball 11. First than center of gravity
Since it acts on the spherical surface near the outlet, the first outlet 31 can be opened with a considerably small force. At this time, the contact member 41 rolls the second ball 12 and fits it into the second outlet 32.

When the pushing force of the push button 10 by the operator is released, the urging of the spring 91 causes the rotary cam projection 81a to slide along the inclined tip of the shallow groove 63, resulting in the rotary cam 81. Rotates further,
The rotating cam protrusion 81a that reaches the position shown in FIG. 7C and cannot be inserted into the shallow groove 63 is locked by the inclined tip of the shallow groove 63 and the side surface portion of the upper guide protrusion 65. At this time,
Since the rotating cam 81 is biased by the spring 91 via the reciprocating shaft 42, both the rotating cam 81 and the reciprocating shaft 42 are temporarily stopped. As a result, the contact member 41 stops at the second stop position P2 via the reciprocating shaft 42, and the first outlet 31
Is opened and the second outlet 32 is kept closed by the second ball 12. That is, the raw water that has flowed in from the inflow port 21 in this state passes through the first outflow port 31 and is discharged from the shower discharge port 18.

When the push button 10 is pressed again, the rotary cam ridge 81a is pushed out by the reciprocating cam ridge 71a which slides in the shallow groove 63 to a position along the inclined tip of the guide ridge 65, and then the push button is pushed. When the pushing force of 10 is released, the rotation cam ridge 81a slides along the inclination of the tip of the guide ridge 65 due to the urging force of the spring 91, and as shown in FIG. The rotary cam ridge 81a slides on 62 and returns to the initial state. As a result, the contact member 41 returns to the first stop position P1.

As described above, since the single guide cylinder 61, the reciprocating cam 71, the rotating cam 81, and the spring 91 are small in number for the plurality of outlets 31 and 32, the temporary stop mechanism 43 is compactly constructed. The valve is operated by an extremely easy operation of pressing the push button 10, and the flow path can be surely switched.

The present invention can be modified as follows. (1) In the above embodiment, the push button 10 is formed separately from the reciprocating shaft 42, but the end of the reciprocating shaft 42 (the side opposite to the ball 11 side) may be integrally formed as a push button portion. In such an embodiment, the end of the reciprocating shaft 42 also serves as the push button 10, and such an embodiment is also included in the scope of the present invention.

(2) In the above embodiment, the valve case 7 is provided with two outflow ports 31 and 32. However, for example, three outflow ports 101 to 103 as shown in FIG. 14 are provided. , One configured by three balls 111 to 113 for opening and closing it and the contact member 115, and two outlets 121, 122 configured by one ball 124 and the contact member 125 as shown in FIG. Alternatively, the valve case may have four or more outlets.

(3) In the above embodiment, the water purifier in which the filtering portion 3 is directly connected to the side portion of the valve body 2 as shown in FIG. 1 has been described, but the present invention is not limited to this. For example, it may be various water purifiers such as a water purifier having a filtering portion which is connected to a hose and is provided separately from the valve body 2 like a stationary water purifier.

[0048]

As is apparent from the above description, according to the first aspect of the present invention, the spherical body in which the contact member is internally provided in the valve case via the reciprocating movable member by one push operation of the push button is formed. Since it is displaced, the valve switching mechanism can be configured simply and the plurality of outlets can be opened and closed easily and reliably.

According to the second aspect of the invention, since the temporary stop mechanism is simply constituted by a single guide cylinder, reciprocating cam, rotating cam and spring for the plurality of outlets, the parts are The number of points is small, and the water purifier can be configured compactly and inexpensively.

Further, according to the invention of claim 3, since the rotation suppressing member for suppressing the rotation of the contact member is provided in the valve case, it is possible to suppress the rotation of the contact member, and to stabilize. The flow path can be switched by displacing the sphere in this state.

Further, according to the invention of claim 4, when the outlet is opened, the abutting member abuts on the spherical portion closer to the outlet than the center of gravity of the ball, so that the ball falls into the outlet. The sphere can be pushed up with a small force. As a result, the push button for moving the contact member can also be operated with a small force.

Further, according to the invention of claim 5, the ratio of the diameter of the sphere to the inner diameter of the outlet is 1: 0.3 to 0.8. It is possible to prevent the inconvenience caused when the difference is small, that is, the sphere from being deeply fitted into the outflow port and having to be pushed up with a large force when opening. Further, it is possible to prevent the inconvenience caused when the inner diameter of the outflow port is extremely small, that is, the inconvenience that the pressure loss of the multi-way valve itself increases and the flow rate extremely decreases.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a water purifier according to an embodiment is attached to a water faucet.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along the line BB in FIG.

FIG. 4 is a sectional view taken along the line C-C in FIG.

FIG. 5 is an exploded perspective view of the valve operation unit excluding a push button.

FIG. 6 is an explanatory view showing an unfavorable example in which an abutting member abuts on a spherical surface portion above the center of gravity of the ball.

FIG. 7 is a perspective view showing a modified example of the contact member.

FIG. 8 is a perspective view showing a modified example of the contact member.

FIG. 9 is a sectional view of a tapered tip portion of a guide cylinder.

FIG. 10 is a development view of the tapered tip portion of the guide cylinder.

FIG. 11 is a side view and a front view of the reciprocating cam.

FIG. 12 is a side view and a front view of a rotating cam.

FIG. 13 is an operation explanatory diagram of a temporary stop mechanism.

FIG. 14 is an explanatory view of a water purifier according to a modified example in which three outflow ports are provided in the valve case.

FIG. 15 is an explanatory diagram of a water purifier according to a modified example in which two outflow ports are provided in the valve case and the ball is configured by a single ball.

[Explanation of symbols]

 1 ... Water purifier 5 ... Multi-way valve 7 ... Valve case 10 ... Push button (pushing member) 11, 12 ... First and second balls (sphere) 21 ... Inlet ports 31, 32 ... First and second outlet ports 41 ... This Contact member 42 ... Reciprocating shaft (reciprocating movable member) 43 ... Temporary stop mechanism 53, 54 ... Rotation suppressing member 61 ... Guide tube 62 ... Deep groove 63 ... Shallow groove 65 ... Guide projection 71 ... Reciprocating cam 71a ... Reciprocating cam projection 81 ... rotary cam 81a ... rotary cam protrusion 91 ... springs (biasing means) P1, P2 ... first and second stop positions

Claims (5)

[Claims] 1. A water purifier comprising a multi-way valve for switching inflowing raw water to a plurality of outflow destinations, and a filter section for filtering raw water flowing through the multi-way valve, wherein the multi-way valve has an inlet and a plurality of inlets. A valve case having an outflow port, at least one sphere provided in the valve case for opening and closing the outflow port, and the sphere displacing the sphere by abutting the sphere, thereby causing the sphere to move out the outflow port. An abutting member that creates a closed state and a state in which the sphere opens the outlet, a pressing member that is attached to the valve case and that pushes and operates the abutting member when opening and closing the outlet, and the pressing member, A reciprocating movable member interposed between the contact member and capable of reciprocating the displacement of the pushing member due to the pressing operation to the contact member; and a plurality of predetermined movements engaged with the reciprocating member. You can pause at the location Accordingly, water purifier, characterized by being configured to include a pause mechanism to maintain the closed state of the outlet by the spherical body. 2. The water purifier according to claim 1, wherein the temporary stop mechanism includes a plurality of deep grooves and a plurality of deep grooves alternating with the same number of shallow grooves, and a guide protrusion between the deep grooves. A guide tube having a line formed in the axial direction of the inner peripheral surface, a reciprocating cam having a reciprocating cam protrusion capable of sliding along the deep groove and the shallow groove, and a rotary cam protrusion capable of sliding along the deep groove. The guide cam and the tip of the shallow groove, each of which includes a rotary cam having a ridge and engaged with the reciprocating movable member, and urging means for urging the reciprocating movable member in the direction of the rotary cam. Is a water purifier with an inclined surface. 3. The water purifier according to claim 1 or 2, wherein the valve case is provided with a rotation suppressing member that suppresses rotation of the contact member. 4. The water purifier according to any one of claims 1 to 3, wherein the abutting member abuts and acts on a spherical portion of the spherical body on the outlet side of the center of gravity of the sphere. 5. The water purifier according to claim 1, wherein a ratio of the diameter of the sphere to the inner diameter of the outlet is 1: 0.3 to 1: 0.8. Water purifier.