JPH0622671U - Branch tap - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a branch plug capable of preventing a backflow of a fluid toward a second inlet. A first inflow port 14 for introducing a fluid, an outflow port 16 for outflowing the fluid, and a second inflow port 24 communicating with the outflow port for guiding a fluid sent from the outside to the outflow port. In the branch plug having the second flow port, the fluid that has flowed backward from the flow-out port 16 to the second flow-in port 24 or its vicinity is
The backflow restricting means 62 is provided to prevent the backflow restriction means 62 from moving toward the inflow port 24.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a branch plug, and more particularly, a first inlet for introducing a fluid, an outlet for discharging a fluid, and a first for communicating a fluid sent from the outside to the outlet, which is connected to the outlet. A branch tap having two inlets.

[0002]

[Prior art]

 An example of a branch plug having a first inflow port for introducing a fluid, an outflow port for outflowing the fluid, and a second inflow port communicating with the outflow port for guiding the fluid sent from the outside to the outflow port There is a technique disclosed in Japanese Utility Model Publication No. 51-26357. This divergence plug is a divergence plug that is used by being attached to the tap of a water supply, and has an inflow port into which tap water is introduced. A branch chamber with two flow passages arranged side by side on the bottom floor is provided, and one steel ball that can select the flow passage to be closed by rolling on the two flow passages in the branch chamber. A switching arm having a sex valve body and a cap covering the valve body at the tip is provided. A rotary shaft is provided at the base end of the switching arm, and it penetrates vertically into the floor surface of the branch chamber, and the lower end thereof projects to the outside. Further, the rotary shaft is movable in the horizontal direction, and a switching lever is provided in series. By operating this switching lever, it is possible to select a flow path in which the valve body is closed. That is, the flow path that allows tap water to directly flow out from the outlet, and the water that has flowed in from the outlet is sent to an external water purifier, etc., and the water that has passed through the water purifier is introduced from the second inlet. It is possible to select the flow path to flow out from the outlet.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional branch plug has the following problems. Parts for preventing splashing of water such as foam and shower are often attached to the outlet of the branch tap. In that case, if the tap water has a high water pressure when selecting a flow path that allows tap water to flow directly from the first inflow port to the outflow port because of the flow path resistance of that part, it will flow back toward the second inflow port. I have something to do. When a backflow occurs in the direction of the second inlet, tap water may enter the water purifier or the like, or the water pressure inside the water purifier or the like may increase, which may have an adverse effect. Therefore, an object of the present invention is to provide a branch plug capable of preventing the backflow of fluid toward the second inlet.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has the following configuration. That is, it has a first inflow port for introducing a fluid, an outflow port for outflowing the fluid, and a second inflow port that is in communication with the outflow port and guides the fluid sent from the outside to the outflow port. In the branch plug, backflow restricting means is provided at or near the second inflow port to prevent the fluid flowing back from the outflow port from moving toward the second inflow port. And For example, the backflow restricting means may use a spherical valve arranged between the second inflow port and the outflow port.

[0005]

[Action]

 The operation will be described. By providing the backflow restricting means at or near the second inflow port to prevent the fluid flowing back from the outflow port toward the second inflow port, the pressure of the fluid becomes abnormal at the outflow port. Even if the fluid rises, it is possible to prevent the fluid from flowing back toward the second inlet.

[0006]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, in each embodiment, a branch plug that can be attached to a faucet will be described as an example. This branch plug sends tap water introduced from the first inlet directly to the outlet and sends tap water introduced from the first inlet to the electrolytic ion water generator to generate the electrolytic ion water. It is a branch plug that switches the flow path when the ionized water electrolyzed in the vessel is reintroduced from the second inflow port and discharged from the outflow port. First Example A first example will be described with reference to FIGS. 1 to 6. 1 is a plan view of the branch plug of the embodiment, and FIG. 2 is a side view of the branch plug of FIG. 1 with a switching lever removed. In both figures, 10 is a faucet mounting portion, which is screwed to the upper end of the main body 12. The faucet mounting portion 10 can be mounted on the tip of a faucet (not shown) for water supply. The faucet mounting portion 10 is provided on the upper surface of the main body portion 12. Tap water flowing out of the faucet can enter the main body 12 through the first inlet 14.

Reference numeral 16 denotes an outflow port, through which tap water and electrolyzed ionized water that have been directly discharged are discharged from the main body 12. The outlet 16 is provided on the lower surface of the main body 12. Reference numeral 18 denotes a switching lever which is an example of switching means, and is rotatable with respect to the main body 12 about a shaft 20. Although the switching mechanism connected to the switching lever 18 will be described later, by rotating the switching lever 18, tap water is directly drawn out or the introduced tap water is supplied to an electrolytic ion water generator (not shown). ) To switch out the electrolyzed ion water. The switching lever 18 is arranged on the right side surface of the main body 12. An out port 22 is a port for sending tap water from the main body 12 to the electrolytic ion water generator. The electrolytic ion water generator and the out port 22 are connected by a tube (not shown). The out port 22 is provided so as to project on the back side of the main body 12.

Reference numeral 24 is an import that is a second inlet, and is a port that introduces the ionized water sent from the electrolytic ionized water generator into the main body 12. The electrolytic ion water generator and the import 24 are also connected by a tube (not shown). The import 24 is provided on the rear side of the main body 12 along with the outport 22 so as to project. Reference numeral 26 is a relief valve, and when the pressure of tap water supplied from the faucet mounting portion 10 exceeds a predetermined value (for example, 8 kilograms), tap water exceeding the value is directly discharged from the main body portion 12. To do. Although the structure of the relief valve 26 will be described later, the relief valve 26 is provided on the left side surface of the main body 12.

Next, the structure of the switching mechanism connected to the switching lever 18 will be described with reference to FIG. 28 is a branch chamber, which is formed in the main body 12. The right end of the branch chamber 28 is watertightly closed by a side cover 30. Reference numeral 32 denotes an inflow passage, which is a water passage for introducing tap water into the branch chamber 28. The left end of the inflow path 32 is connected to the first inflow port 14 of the faucet mounting portion 10. On the other hand, the right end of the inflow path 32 opens into the branch chamber 28. Reference numeral 34 is a first outflow passage, which is formed so as to extend to the left and is connected to the outflow port 16, although the water passage configuration will be described later. The right end of the first outflow passage 34 is opened in the branch chamber 28, and the rim of the opening serves as a valve seat. Reference numeral 36 is a second outflow channel, which is connected to the export port 22, although the detailed water channel configuration will be described later. The right end of the second outflow passage 36 is opened in the branch chamber 28, and the edge of the opening serves as a valve seat. The second outflow passage 36 is formed on the back side of the first outflow passage 34 in the main body 12. The distance between the center of the opening of the first outflow passage 34 and the center of the shaft 20 and the distance between the center of the opening of the second outflow passage 36 and the center of the shaft 20 are set to be equal.

Reference numeral 38 denotes a valve element, which is arranged in the branch chamber 28. The valve body 38 is made of an elastically deformable elastic material (for example, synthetic rubber) and formed into a spherical shape. The valve body 38 is movable between the opening of the first outflow passage 34 and the opening of the second outflow passage 36, and the opening portions of the first outflow passage 34 and the second outflow passage 36 are movable. Can be selectively blocked. Reference numeral 40 denotes a rotating body, and the shaft 20 protruding in the branch chamber 28 is fitted in the recess 42. Therefore, the rotating body 40 is rotatable around the shaft 20. The right end portion of the rotating body 40 projects from the side cover 30 to the outside of the main body portion 12, and the switching lever 18 is fixedly provided at the tip thereof. When the switching lever 18 is rotated, the rotating body 40 rotates. ing.

The rotating body 40 is integrally provided with a cylinder portion 44 whose both ends are open, and the valve body 38 is arranged at the inner left end of the cylinder portion 44 so as to be movable in the left-right direction. The valve body 38 is constantly urged to the left by a spring 48a mounted elastically between retainers 46a and 46b arranged inside the cylinder portion 44. Due to this biasing force, the valve body 38 is pressed against the opening of the first outflow passage 34 or the opening of the second outflow passage 36, and when the valve body 38 closes the opening, it elastically deforms itself. It is in close contact with the rim (valve seat) of the opening to ensure water tightness. Therefore, it is not necessary to attach a sealing material, which has been conventionally required, to both openings. With such a configuration, the switching lever 18 can be rotated, and at the same time, the position of the valve body 38 can be moved between the opening portion of the first outflow passage 34 and the opening portion of the second outflow passage 36. As a result, the openings of the first outflow passage 34 and the second outflow passage 36 can be selectively closed.

Reference numeral 50 denotes a convex portion, which is provided in a hemispherical shape on the right end surface of the retainer 46b. The convex portion 50 can be fitted into the click concave portion 52 that is provided in the inner surface of the side cover 30. Two click recesses 52 (only one is shown in FIG. 3) are juxtaposed on the inner surface of the side cover 30. The click recess 52 is the inner surface of the side cover 30, and is located at a position corresponding to the protrusion 50 when the valve body 38 closes the first outflow passage 34, and the valve body 38 closes the second outflow passage 36. In doing so, it is recessed at two places, the position corresponding to the convex portion 50. The convex portion 50 and the concave portion 52 constitute a click mechanism, and when the switching lever 18 is operated to switch the closed outflow passage, a click feeling is transmitted to the switching lever 18, and the outflow passage is switched to the user. It is possible to sensuously report that. If the click mechanism is not provided, the valve body 38 absorbs the shock of switching even if the outflow passage is switched, and it is difficult for the user to determine whether or not the outflow passage has been switched.

Next, the structure of the relief valve 26 will be described with reference to FIG. The relief valve 26 communicates with the first inflow port 14, and the valve seat 54 of the flow passage 60 a communicating with the flow passage 60 is normally closed by the relief valve body 56. The relief valve body 56 is constantly urged to the right by a spring 48b mounted elastically between the retainers 46c and 46d disposed inside. Due to this biasing force, the relief valve body 56 can close the valve seat 54. When the pressure of tap water supplied from the faucet mounting portion 10 exceeds the predetermined value (for example, 8 kilograms), the relief valve body 56 is pushed to the left against the biasing force of the spring 48b, and the valve seat is seated. 54 is opened. At that time, tap water in excess of the predetermined value passes through the through hole 64 penetrating the retainer 46d and is directly discharged from the relief port 58 to the outside of the main body 12. The relief valve 26 prevents an abnormally high water pressure from being applied to the electrolytic ion water generator.

Next, with reference to FIG. 4, a water channel configuration for directly tapping the tap water introduced into the main body 12 will be described. The tap water that has entered from the faucet mounting portion 10 enters from the fan-shaped outlet 60 to the inflow passage 32 formed above the first outflow passage 34 and the second outflow passage 36 in the main body portion 12. The tap water that has passed through the inflow path 32 is introduced into the branch chamber 28. At this time, since the valve body 38 closes the opening of the second outflow passage 36, the water in the branch chamber 28 advances through the first outflow passage 34. Since the first outflow passage 34 communicates with the outflow port 16, tap water that has entered from the faucet mounting portion 10 is drained from the outflow port 16. The above-mentioned tap water flow path is indicated by a chain line A in FIG.

Next, with reference to FIG. 5 and FIG. 6, in a case where the tap water introduced into the main body 12 is sent to the electrolytic ion water generator and the ion water electrolyzed by the generator is derived. The water channel structure and the backflow regulation means will be described. The tap water that has entered from the faucet mounting portion 10 enters the inflow passage 32 from the fan-shaped mouth 60. The tap water that has passed through the inflow path 32 is introduced into the branch chamber 28. At this time, since the valve element 38 closes the opening of the first outflow passage 34, the water in the branch chamber 28 passes through the second outflow passage 36 to the outport 22. Tap water is sent from the out port 22 through a tube (not shown) to the electrolytic ion water generator and electrolyzed. The electrolyzed alkaline water is returned to the import 24 through a tube (not shown). Since the import 24 communicates with the outlet 16, the alkaline water is drained from the outlet 16. The paths of the above tap water flows are indicated by alternate long and short dash lines B to D in FIGS. 5 and 6.

In the import 24, reference numeral 62 is a spherical valve which is an example of a backflow regulating means, and is a flexible spherical body made of synthetic rubber. The spherical valve 62 is disposed in the flow path in the import 24 or in the vicinity thereof, and is provided to prevent the backflow of tap water from the direction of the outlet 16 toward the inlet 24. For example, a component (not shown) for preventing water splashing is attached to the outflow port 16, the component becomes flow path resistance, the water pressure near the outflow port 16 rises abnormally, and tap water flows back toward the import 24 direction. Then, due to the reverse flow pressure, the spherical valve 62 moves, the spherical valve 62 moves to the position indicated by the two-dot chain line at 62a, the flow path in the import 24 is blocked, and the tap water that is flowing back is imported. It is possible to prevent backflow in 24 directions. If the water pressure in the vicinity of the outlet 16 is a normal value, the spherical valve 62 moves to the position shown by the solid line by the pressure of the generated water introduced from the import 24, and the flow path in the import 24 is opened. In this embodiment, a rubber ball is used as the spherical valve 62. However, when the rubber ball closes the flow passage, it is elastically deformed by itself and can be brought into close contact with the rim (valve seat) of the flow passage. This is advantageous because the conventional sealing material is unnecessary.

Second Embodiment A second embodiment will be described with reference to FIGS. 7 to 9. The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The second embodiment is an example in which a columnar valve 100 is used instead of the spherical valve 62 of the first embodiment. In the case of the spherical valve 62, when the pressure of water introduced from the import 24 exceeds a certain value, it may vibrate and generate noise. The second embodiment is intended to prevent the noise. The columnar valve 100, which is a backflow regulating means, is arranged in the channel of the import 24 with its axis parallel to the axis of the channel. The columnar valve 100 is movable in the axial direction, and when tap water flows backward in the direction of the import 24, the stepped valve seat 102 formed in the import 24 is closed at the tip (see FIGS. 7 and 8). State), it is possible to prevent the backflow of water in the direction of the inlet 24. In the normal state, similarly to the first embodiment, the columnar valve 100 is retracted by the pressure of the generated water introduced from the import 24, and the valve seat 102 in the import 24 is opened. A flexible cap 104 made of synthetic rubber or the like is attached to the tip of the columnar valve 100 to more reliably close the valve seat 102.

The columnar valve 100 has a fitting hole 110 formed in the rear portion thereof, and a guide pin 106 protruding in the flow path is slidably engaged therewith. This sliding operation enables the columnar valve 100 to move in the axial direction. Further, as clearly shown in FIG. 9, four beads 108 are provided on the inner wall surface of the flow passage in the import 24 in the axial direction of the flow passage so that they can be slidably contacted with the outer peripheral surface of the columnar valve 100. Has become. It should be noted that the space between the beads 108 serves as a water passage to ensure passage of generated water. By providing the guide pin 106 and the bead 108, vibration and noise generation in the flow passage of the columnar valve 100 can be prevented.

Third Embodiment A third embodiment will be described with reference to FIGS. 10 and 11. The same components as those of the preceding embodiment are designated by the same reference numerals and the description thereof will be omitted. The third embodiment is a modification of the columnar valve 100 of the second embodiment. In the columnar valve 200 of the third embodiment, as clearly shown in FIG. 11, four beads 202 extending in the axial direction are provided on the outer peripheral surface so as to project. The bead 202 is slidable with the inner wall surface of the flow path in the import 24. Also in the third embodiment, as in the second embodiment, the space between the beads 202 serves as a water passage to ensure passage of generated water.

A flexible ring 204 made of synthetic rubber or the like is fitted to the tip of the columnar valve 200, and the ring-shaped valve seat 102 formed in the import 24 can be opened and closed by the ring 204. . When the tap water flows back in the direction of import 24, the ring 204 closes the valve seat 102 (state of FIG. 10), and the flow of backflow water in the direction of import 24 can be prevented. In the normal state, the columnar valve 200 retreats and the valve seat 102 opens due to the pressure of the produced water introduced from the import 24 as well. Also in the third embodiment, by providing the guide pin 106 and the bead 202 that slide with the fitting hole 110 of the columnar valve 200, it is possible to prevent vibration and noise in the channel of the columnar valve 200.

In the branch plug of each of the above embodiments, each water channel is formed in the horizontal direction, and the water channels in the upward and downward directions are formed as short as possible, so that the branch valve having a small thickness can be realized. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. is there.

[0022]

[Effect of device]

 When the branch plug according to the present invention is used, a backflow regulating means for preventing the fluid flowing back from the outlet from moving toward the second inlet is provided at or near the second inlet. As a result, even if the pressure of the fluid rises abnormally at the outlet, it is possible to prevent the fluid from flowing backward toward the second inlet. It is possible to prevent adverse effects caused by intrusion of tap water and abnormal rise of water pressure inside water purifiers.

[Brief description of drawings]

1 is a plan view showing a first embodiment of a branch plug according to the present invention.

FIG. 2 is a side view showing a state in which a switching lever is removed in the first embodiment.

FIG. 3 is a front sectional view showing the structures of the switching mechanism and the relief valve of the first embodiment.

FIG. 4 is a front cross-sectional view showing a water channel configuration when tap water is directly led out in the first embodiment.

FIG. 5 is a partial plan cross-sectional view showing a water channel configuration and a backflow restricting means when deriving ionized water in the first embodiment.

FIG. 6 is a side cross-sectional view showing a water channel configuration and a backflow restricting means in the case of discharging ionized water in the first embodiment.

FIG. 7 is a partial plan cross-sectional view showing a water channel structure and a backflow restricting means in the case of discharging ionized water in the second embodiment.

FIG. 8 is a side cross-sectional view showing a water channel structure and a backflow restricting means in the case of discharging ionized water in the second embodiment.

FIG. 9 is a transverse cross-sectional view showing an import configuration and a backflow regulating means in the second embodiment.

FIG. 10 is a vertical cross-sectional view showing an import configuration and a backflow regulating means in the third embodiment.

FIG. 11 is a transverse cross-sectional view showing an import configuration and a backflow regulating means in the third embodiment.

[Explanation of symbols]

 14 1st inflow port 16 Outflow port 24 Import 62 Spherical valve 100 Columnar valve 200 Columnar valve

Claims (3)

[Scope of utility model registration request] 1. A first inflow port for introducing a fluid, an outflow port for outflowing the fluid, and a second inflow port that is in communication with the outflow port and guides the fluid sent from the outside to the outflow port. In the branch plug having, a backflow restricting means for preventing the fluid flowing back from the outlet from moving toward the second inlet is provided at or near the second inlet. Characteristic branch plug. 2. The branch plug according to claim 1, wherein the backflow restricting means is a spherical valve disposed between the second inflow port and the outflow port. 3. The branch plug according to claim 1, wherein the backflow regulating means is a columnar valve disposed between the second inflow port and the outflow port.