JPH0712770Y2 - Multi-way valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a multi-way valve in which a ball for opening and closing a flow path is installed in a valve case.

[Prior Art] As a conventional multi-way valve, a valve case having a substantially cylindrical water chamber is provided with an inlet and a plurality of outlets for a fluid such as water. There is one in which a valve body having a shape and provided with a flow path capable of communicating the inlet and the outlet is inserted. In this multi-way valve, the flow passage can be switched by rotating the valve element around the axis of the valve element.

[Problems to be Solved by the Invention] In the conventional multi-way valve using the cylindrical valve body as described above, the sliding area between the valve case and the valve body is large, and a large force is required to rotate the valve. It was Moreover, watertightness could not be maintained due to wear of a part of the sliding portion, and water leakage was likely to occur.

[Means for Solving the Problems] In the multi-way valve of the present invention, a rotary shaft is inserted into a substantially cylindrical valve case having an inlet and three or more outlets, and the outlet is A multi-way valve arranged at different positions in a cylinder axis direction of a valve case, wherein a plurality of balls are arranged in the valve case so as to be able to close the outflow port, and the rotary shaft has: There are provided a plurality of arm-shaped portions that open any of the balls by pushing any one of the balls at a predetermined rotation angle, and at least one of the arm-shaped portions is The cam is characterized in that it is a cam that extends only partially in the circumferential direction.

[Operation] In the multi-way valve of the present invention, when the shaft is turned to a certain angle, the arm-shaped portion pushes away any one ball from the outlet, whereby the outlet is opened and the fluid flows out. It

By adjusting the mounting angle of the arm-shaped portion with respect to the shaft and the size of the arm-shaped portion in the circumferential direction, the angle at which the arm-shaped portion pushes away the ball and opens the outlet can be determined. Therefore, it is possible to freely determine which outflow port at which rotation angle is used to flow out.

The sliding area can be made very small by opening and closing the outflow port with the ball.

Embodiments Embodiments will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view of a faucet according to an embodiment of the present invention (a sectional view taken along the line I-I of FIG. 4), and FIG. 2 is a front view of the faucet with a water purifier attached. 3 is a front view with the water purifier removed, FIG. 4 is a plan view of FIG. 3, and FIG.
The figure is a right side view of FIG. 3, and FIG. 6 is a bottom view of FIG.
FIG. 8 is a perspective view of a rotating shaft (cam shaft) in FIG. 1, FIGS. 8 (A) to (J) are views seen from respective directions in FIG. 7, and FIG.
FIG. 10 is a diagram showing a mechanism for giving a moderation to the rotation of a shaft (cam shaft), and FIG. 10 is a diagram for explaining the operation of FIG.

As shown in FIG. 1, the valve case 10 has a substantially cylindrical water chamber 12 therein, an inlet 14 for tap water to flow in is formed above, and a shower outlet 16 for flowing out as a shower below. A rectification outlet 18 is formed to rectify and flow out. Further, a connection outlet 20 connected to the water purifier is formed on the side.

The connection outlet 20 is connected to an outer flow passage 22 formed on one side of the valve case 10. Water is supplied from this outer flow path 22 to a water purifier described later. The water purified in the water purifier is returned through the inner flow path 24 formed inside the outer flow path 22 and is discharged downward from the purified water discharge port 26.

As shown in FIGS. 1 to 6, an upper housing 28 is provided so as to surround the upper side of the valve case 10. The upper housing 28 is provided with a water purifier connecting portion 32 for connecting the water purifier 30 (see FIG. 2) to the outer flow passage 22 and the inner flow passage 24. Also, the upper housing
In order to allow tap water to flow into the inflow port 14, a cap nut that holds a ring-shaped adapter 34 to which a tap for faucet or the like is attached in advance is screwed into the valve case 10 at 28.
36 are provided.

Further, a packing that is pressed by the cap nut 36 to support the lower surface of the adapter 34 and maintain a watertight state.
38 are provided. A central opening 40 of the packing 38 is aligned with the inflow port 14.

A lower housing 42 is provided so as to surround the lower side of the valve case 10. A lower housing 42 is provided.
The lower housing 42 is provided with an opening 44 for exposing the purified water discharge port 26. Further, a shower sprinkler plate 46 for showering water from the shower outlet 16 is mounted. That is, a concave portion 52 is formed on the outer periphery of the rectifying outlet 18, and the shower outlet 16 is opened so as to face the inside of the concave portion 52. A baffle plate 54 is provided in the recess 52 to uniformly disperse the water flowing out from the shower outlet 16 in the recess 52. Shower sprinkler 46
A large number of shower holes 556 are provided in the water, and the dispersed water flows out through the shower holes 56.

A straightening port 50 is opened in the center of the shower sprinkler plate 46, and the outflow port 18 is provided so as to face the straightening port 50.
The rectifying port 50 and the recess 52 are watertightly separated from each other by a sealing material 50S. Rectification is discharged through the mesh 48 attached to the rectification port 50.

In the valve case 10, balls 60a, 60b, 60c capable of closing the three outlets 16, 18, 20 are arranged.

The valve case 10 has a cam shaft 68 (rotating shaft) provided with two cams 62, 64 and a tubular body 66 as an arm portion.
Is rotatably inserted. Figures 7 and 8
As shown in FIG. 8 which is a view seen from each direction, the first cam 62 includes a ball 60 for closing the rectifying outlet 18.
It has the function of pushing away a. The tubular body 66 holds therein a ball 60b for closing the shower outlet 16.

The second cam 64 has a function of pushing away the ball 60c for closing the connection outlet 20 and opening the outlet 20. Both the first cam 62 and the second cam 64 have a substantially fan shape, and the outer circumference has the same arc shape as the inner peripheral wall of the substantially cylindrical water chamber 12.

The second cam 64 is formed with a guide claw 69 that projects substantially in the axial direction, and the guide claw 69 is formed in the water chamber 12 of the valve case 10.
It engages with a guide groove 70 formed in the end wall of the. The guide groove 70 is formed in an arc shape of about 270 degrees,
By guiding the guide claw 69, the cam shaft 68 is roughly
It can be rotated 0 degrees. (The guide claw 69 is the camshaft 6
The camshaft 68 is 180 degrees (270-90 = 180) with a shape that has a spread of about 90 ° with respect to the circumferential direction of the shaft center of 8.
You can rotate the range of. ) The tubular body 66 has a substantially cylindrical shape, and an arc-shaped rib 72 is formed on the side surface.
The end face of 72 can rotate along the inner wall of the water chamber 12. A slit 74 is formed in the cylindrical body 66 to improve the flow of water inside the water chamber 12 and to shorten the axial length of the cam shaft 68 to shorten the entire apparatus.

A ring groove 75 is formed at the right end of the cam shaft 68.
An O-ring 76 is attached to the ring groove 75 to prevent water from leaking toward the right end. The cam shaft 68 is enclosed in the valve case 10 by a retainer 78.
On the right end surface of the cam shaft 68 that is confined, a hole 80 of irregular cross section is formed.
Are formed. The operation shaft 84 of the handle 82 is inserted into the hole 80. As a result, when the handle 82 is rotated, the cam shaft 68 is rotated.

The operation shaft 84 is provided with a click mechanism C shown in FIG. 9 in order to give a click feeling when the handle 82 is rotated. That is, a part having a cross-shaped star shape is provided on a part of the operation shaft 84. Elastic claws that engage the four star-shaped recesses
Install 86 on the valve case side. By rotating the operation shaft 84 while engaging with the claw 86 and flipping the claw, a response is given every 90 degrees, and a click feeling is obtained.

Next, the operation of the multi-way valve will be described with reference to FIG. In FIG. 10, (a) is a plane sectional view of the multi-way valve, and (b) is a vertical sectional view. Further, (c) is an operation diagram of the first cam 62, (d) is an operation diagram of the tubular body 66, and (e) is an operation diagram of the second cam 64.

First, in the “rectified” state, the first cam 62 is the ball.
60 has been pushed away, and the rectification outlet 18 is open. At this time, the tubular body 66 has the axial direction of the cylinder as the vertical direction, and the balls 60b inside close the shower outlet 16. The second cam 64 is vertically above the ball 60c and does not contact the ball 60c. Therefore, the connection outlet 20 is in a closed state.

In the "shower" state, the cam shaft 68 rotates 90 degrees from the "rectifying" state, and the first cam 62 moves the ball.
It is above 60a and is not in contact with ball 60a. Therefore, the rectification outlet 18 is closed by the ball 60a.
Further, the tubular body 66 has the axial direction of the tube in the horizontal direction, and holds the ball 60b therein. Therefore, the ball 60b is separated from the shower outlet 16, and the shower outlet 16 is open. The second cam 64 is located above the ball 60c, and the ball 60c closes the connection outlet 20.

Next, in the "purified" state, the cam shaft 68 is rotated by 90 degrees from the "shower" state. The first cam 62 is still above the ball 60a, and the ball 60a is the straightening outlet 18
Is closed. Further, the tubular body 66 has rotated 180 degrees from the “rectified” state, and the ball 60b falls again to close the shower outlet 16. The second cam 68 is a ball 60c
, And the connecting outlet 20 is open.

In this way, by rotating the cam shaft 90 degrees at a time, the tubular body 66, the first cam 62, and the second cam 64 work so that the outlets 16, 1
Only one of 8 and 20 is opened, and the discharge flow path is switched.

As described above, according to the present embodiment, the outlets 16, 18, 20
Since the balls are opened and closed by the balls 60a to 60c, a generally cylindrical valve body is not required unlike the conventional case, and the sliding area between the valve body and the inner wall of the valve case can be reduced. Explaining with reference to FIG. 1, this sliding portion is located near the position where the O-ring 76 is provided.
Ribs of arcuate outer peripheral tubular body 66 of cam 62 and second cam 64
The outer peripheral portion of 72 and the guide claw 69 and the like. However, these sliding parts do not have a watertight function except for the O-ring 76, and therefore, it is not necessary to slide with a strong pressing force. Therefore, the force required to rotate the cam shaft, and thus the handle 82, is smaller than in the conventional case.

In the present embodiment, the tubular body 66 is not made to be a complete tube, and the slits 74 and the like are provided, whereby the tubular body is made smaller in the axial direction of the cam shaft 68, and the entire apparatus can be made smaller in the cam axial direction. Further, the position of the cam shaft 68 and the center of rotation of the cam shaft 68 do not coincide with each other, and they have a substantially crank shape as shown in FIGS. 8 (B) and 8 (C).

In the present embodiment, the tubular body 66 may have a rectangular tubular shape. Further, the tubular body 66 may have a substantially C-shaped cross-sectional shape in which one slit is formed in the tubular axis direction.

In the above embodiment, the rectifying outflow port 18 is opened when the first cam 62 pushes away the ball 60a. However, in the present invention, for example, the tubular body holds the ball and becomes horizontal. Sometimes, the rectification outlet may be opened. That is, which of the outlets for rectifying, for showering, and for connecting and outflowing can be changed as necessary.

Further, although the above embodiment is a three-ball type, it may be a multi-way valve of four-way valve or more provided with four or more balls.

[Effects of the Invention] As described above, in the multi-way valve of the present invention, since the outlet is opened and closed by the ball, there are few sliding parts, the shaft can be rotated with a small force, and light use is possible. It is possible. Further, it is possible to open only one of the multiple outlets and close all the outlets.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a water faucet according to an embodiment of the present invention. FIG. 2 is a front view of the faucet with a water purifier attached. FIG. 3 is a front view of the faucet with the water purifier removed. FIG. 4 is a plan view of FIG. Figure 5 is the third
It is a right view of a figure. FIG. 6 is a bottom view of FIG.
FIG. 7 is a perspective view of the cam shaft 68. FIG. 8 (A) is the seventh
It is a front view of a figure. FIG. 2B is a plan view of FIG. The figure (C) is a bottom view of the figure (A). FIG. 6D is a rear view of FIG. FIG. 6E is a view taken along the line EE in FIG. The same figure (F) is the same figure (A)
It is a FF arrow line view of. The same figure (G) is G- of the same figure (A).
FIG. FIG. 3H is a view taken along the line H-H of FIG. The figure (I) is a view on arrow I-I of the figure (A). The figure (J) is a view taken along the arrow JJ of the figure (A). FIG. 9 is a view showing a click mechanism for giving a moderation to the rotation of the cam shaft. FIG. 10 is a diagram for explaining the operation of FIG. 10 ... Valve case, 14 ... Inlet, 16 ... Shower outlet,
18 ... rectifying outlet, 20 ... connecting outlet, 22 ... outer flow passage, 24 ...
Inner channel, 26 ... Purified water outlet, 28 ... Upper housing,
30 ... Water purifier, 32 ... Water purifier connection, 56 ... Shower hole, 60a,
60b, 60c ... ball, 62 ... first cam, 64 ... second cam, 66 ...
Cylindrical body, 69 ... Guide claw, 70 ... Guide groove, 76 ... O-ring,
82 ... Handle, 84 ... Operation axis.

Claims (1)

[Scope of utility model registration request] 1. A rotating shaft is inserted in a substantially cylindrical valve case having an inflow port and three or more outflow ports, and the outflow port is located at a position in the axial direction of the tube axis of the valve case. A multi-way valve arranged differently, wherein a plurality of balls are arranged in the valve case so as to be able to close the outflow port, and the rotation shaft has one of the balls at a predetermined rotation angle. A plurality of arm-shaped portions for opening any one of the outlets by pushing away one of the arm-shaped portions are provided, and at least one of the arm-shaped portions extends only in a part in the circumferential direction of the rotation shaft. A multi-way valve characterized by being a cam.