JP2017179802A - Flushing water supply device and flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flushing water supply device and a flush toilet bowl that enhance versatility.SOLUTION: A flushing water supply device according to an embodiment includes a water inlet section, a feed water valve section, a vacuum breaker section, and a water outlet section. Flushing water is led into the water inlet section. The feed water valve section is provided on a downstream side of the water inlet section, and includes a feed water valve that opens/closes a flow channel. The vacuum breaker section is provided on a downstream side of the feed water valve section, and includes a vacuum breaker. The water outlet section is provided on a downstream side of the vacuum breaker section, and has the flushing water led thereinto. The flushing water supply device according to the embodiment is divisible into a first unit and a second unit, the first unit including the water inlet section and the feed water valve section, and the second unit including the vacuum breaker section and the water outlet section.SELECTED DRAWING: Figure 4A

Description

  The embodiment of the disclosure relates to a washing water supply device and a flush toilet.

  Conventionally, wash water stored in the tank is pressurized and supplied to the rim spout and supplied to the rim spout directly from the water supply to the bowl with a rim spout and jet spout. A washing water supply device is known (see Patent Document 1).

  The cleaning water supply device includes, for example, a water supply valve unit that switches between discharge and stop of the cleaning water to the bowl unit, a switching valve unit that switches an outlet of the cleaning water, a vacuum breaker that prevents backflow of the cleaning water, and the like. Conventionally, these are integrally formed by a mold or the like.

WO2005 / 098152

  However, since the conventional washing water supply apparatus is formed by integral molding as described above, for example, even when a part of the configuration is changed, the entire apparatus must be newly manufactured, and the versatility is improved. It was lacking.

  An object of an embodiment of an indication is to provide a washing water supply device and a flush toilet which can improve versatility.

  The cleaning water supply device according to one aspect of the embodiment is a cleaning water supply device that supplies cleaning water to the toilet body, and is provided on the downstream side of the water inlet portion, the water inlet portion into which the cleaning water is introduced, A water supply valve portion including a water supply valve that opens and closes the flow path, a vacuum breaker portion including a vacuum breaker provided on the downstream side of the water supply valve portion, and provided on a downstream side of the vacuum breaker portion, from which washing water is derived. And a water discharge portion, and is configured to be separable into a first unit including the water intake portion and the water supply valve portion, and a second unit including the vacuum breaker portion and the water discharge portion.

  By being configured to be separable into a first unit including a water inlet and a water supply valve and a second unit including a vacuum breaker and a water outlet, the first unit and the first Since two units can be rearranged, a highly versatile washing water supply apparatus can be provided.

  The first channel formed in the first unit among the channels from the water inlet to the water outlet is the second unit among the channels from the water inlet to the water outlet. The second flow path is formed of a material having a higher rigidity than the second flow path.

  Since the cleaning water supply device is configured to be divided into the first unit and the second unit, the first unit and the second unit can be formed of different materials. And manufacturing cost can be restrained low by forming the 1st flow path from which the intensity | strength is calculated | required comparatively with the material whose rigidity is higher than the 2nd flow path.

  The first unit is disposed at a lower portion of the second unit, and the water supply valve portion includes an upper housing having a plurality of upper screw holes into which screws are inserted from above, and the plurality of upper screw holes. A lower housing formed with a plurality of lower screw holes corresponding to the at least one of the plurality of upper screw holes when the first unit and the second unit are viewed from above. It is provided at a position hidden by the second unit.

  In order to reduce the footprint of the cleaning water supply device, the screw hole used for fastening the upper housing and the lower housing of the water supply valve portion must be provided at a position hidden by a vacuum breaker portion provided above the water supply valve portion. You may not get. For this reason, conventionally, screws have been inserted from below, that is, from the lower housing side. On the other hand, since the washing water supply device according to an aspect of the embodiment is configured to be divided into the first unit and the second unit, at least one of the plurality of upper screw holes is in a position hidden by the second unit. Even if it is provided, it is possible to access all upper screw holes from above by removing the second unit. For this reason, compared with the past, workability and maintainability can be improved.

  In addition, the second unit further includes a switching valve portion that is provided on the downstream side of the water supply valve portion and switches an outflow destination of the cleaning water.

  The switching valve portion provided on the downstream side of the water supply valve portion, that is, the secondary side does not require high rigidity as compared with the water supply valve portion. Therefore, by including the switching valve portion in the second unit, the cost can be reduced compared to the case where the switching valve portion is included in the first unit.

  Further, the vacuum breaker portion is provided in the water passage, the water passage having a water inlet on the upstream side and a water outlet on the downstream side, an air introduction port communicating the water passage with the outside, and the washing water. When the water flows, the water inlet and the water outlet are in communication with each other, and when the water is not in water, the valve body communicates with the water inlet and the air inlet, and overflows from the air inlet. And a water receiving portion for receiving cleaning water, wherein the switching valve portion is provided downstream of the vacuum breaker portion.

  The switching valve goes through a state in which the wash water flows out to both of the outflow destinations when the outflow destination of the wash water is switched from one outflow destination to another outflow destination. In this way, in the state where the wash water flows out to both outflow destinations, the flow rate of the wash water flowing through each outflow destination becomes smaller than the flow rate of the wash water flowing upstream of the switching valve. Therefore, if a vacuum breaker is installed on the downstream side of the switching valve, the vacuum breaker valve body does not operate normally due to a decrease in water pressure due to a decrease in flow rate, and the wash water to be supplied to the toilet body is introduced into the atmosphere. May overflow from the mouth. For this reason, conventionally, the vacuum breaker has been provided with a water receiving portion for receiving the wash water overflowing from the air inlet. On the other hand, the flow rate does not decrease as described above on the upstream side of the switching valve. Therefore, in the cleaning water supply apparatus according to one aspect of the embodiment, the vacuum breaker is provided on the upstream side of the switching valve. Thereby, the situation where the malfunction of a valve body arises by the fall of the water pressure accompanying the fall of flow volume can be suppressed. By suppressing the occurrence of malfunction of the valve body, the amount of washing water overflowing from the air introduction port is reduced, so that the water receiving portion can be made smaller than before. Thereby, a washing water supply device can be reduced in size compared with the past.

  Further, a flush toilet according to one aspect of the embodiment includes any one of the washing water supply devices.

  Thereby, since the manufacturing cost of the washing water supply apparatus can be suppressed, the manufacturing cost of the flush toilet can be suppressed.

  According to one aspect of the embodiment, a washing water supply device and a flush toilet that can improve versatility can be provided.

FIG. 1 is a diagram illustrating a configuration of a flush toilet according to the embodiment. FIG. 2A is a front view of the valve unit. FIG. 2B is a side view of the valve unit. FIG. 3A is a front sectional view of the periphery of the vacuum breaker portion and the switching valve portion. FIG. 3B is a side sectional view of the periphery of the vacuum breaker portion and the switching valve portion. FIG. 4A is an exploded perspective view of the valve unit. FIG. 4B is a separated front view of the valve unit. FIG. 4C is a separated side view of the valve unit. FIG. 5A is a plan view of a flush toilet incorporating a flush water supply device. FIG. 5B is a plan view showing a state where the second unit is removed from the valve unit. FIG. 6A is a diagram illustrating a configuration of a valve unit according to a first modification. FIG. 6B is a diagram illustrating a configuration of a valve unit according to a second modification.

  Hereinafter, with reference to an accompanying drawing, an embodiment of a washing water supply device and a flush toilet which this application discloses is described in detail. In addition, this invention is not limited by embodiment shown below.

<1. Structure of flush toilet>
First, the structure of the flush toilet according to the embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating a configuration of a flush toilet according to the embodiment.

  As shown in FIG. 1, a flush toilet 100 according to the embodiment is disposed, for example, on a toilet body 200 placed on the floor surface of a toilet room, and on the rear side of the toilet body 200. The cleaning water supply device 1 supplies the cleaning water.

  The toilet body 200 includes a bowl portion 210 that receives filth and a drain trap pipe 220 that extends rearward from the bottom of the bowl portion 210. A rim water discharge port 212 for performing rim water discharge and a jet water discharge port 214 for performing jet water discharge are formed in the bowl portion 210. The rim water discharge port 212 is formed at the upper rear of the bowl part 210 and discharges cleaning water along the upper edge of the bowl part 210. The jet spout 214 is formed at the bottom of the bowl portion 210 and discharges cleaning water toward the drain trap conduit 220. The drain trap pipe 220 forms sealed water and communicates with a sewage pipe (not shown).

  The cleaning water supply apparatus 1 includes a valve unit 600 that is controlled by a control unit (not shown), a tank 800 that is provided downstream of the valve unit 600 and stores cleaning water, and is provided downstream of the tank 800 to pressurize the cleaning water. And a pressurizing pump 900.

  A water supply path 320 that supplies cleaning water from a water supply source (not shown) is connected to the upstream side of the valve unit 600. Further, on the downstream side of the valve unit 600, a rim side water supply path 340 for supplying cleaning water to the rim water spouting port 212 and a tank side water supply path 360 for supplying cleaning water to the tank 800 are connected.

  The valve unit 600 includes a water inlet 610, a constant flow valve 620 provided downstream of the water inlet 610, and a diaphragm type water supply valve 640 provided downstream of the constant flow valve 620. Further, the valve unit 600 includes a vacuum breaker unit 680 provided downstream of the water supply valve unit 640, a switching valve unit 660 provided downstream of the vacuum breaker unit 680, and a water discharge unit 670 provided downstream of the switching valve unit 660. With.

  The water inlet 610 is connected to the water supply channel 320 and is supplied with wash water from a water supply source (not shown). The constant flow valve 620 flows into the constant flow valve 620 from the water supply channel 320 and keeps the flow rate of the washing water toward the downstream side constant. The water supply valve section 640 switches between water discharge and water stop at the rim water discharge port 212 and the jet water discharge port 214 by opening and closing the water supply valve.

  The vacuum breaker unit 680 includes a vacuum breaker 687 that prevents the backflow of the cleaning water. The switching valve unit 660 supplies cleaning water toward the rim-side water supply channel 340 or the tank-side water supply channel 360. The wash water overflowing from the vacuum breaker is collected by the water receiving portion 684 of the vacuum breaker portion 680 and then discharged to the tank 800 through the drainage channel 390 connected to the bottom surface of the water receiving portion 684.

  The water discharge section 670 is connected to the rim side water supply path 340 and is connected to the rim side water supply section 671 for leading the wash water to the rim side water supply path 340 and the tank side water supply path 360. And a tank-side water discharge portion 672 for discharging the wash water.

  A pump-side water supply path 370 is connected to the lower part of the tank 800, and a pressure pump 900 is connected to the downstream end of the pump-side water supply path 370. The pressurizing pump 900 is connected to the jet water outlet 214 through the jet side water supply path 380, pressurizes the cleaning water stored in the tank 800, and supplies the pressurized water to the jet water outlet 214 through the jet side water supply path 380.

  The valve unit 600 according to the embodiment includes a first unit 601 including a water inlet 610, a constant flow valve 620, and a water supply valve 640, and a second unit 602 including a vacuum breaker 680, a switching valve 660, and a water outlet 670. It can be divided into Below, the structure of this valve unit 600 is demonstrated concretely.

<2. Configuration of valve unit>
A specific configuration of the valve unit 600 will be described with reference to FIGS. 2A to 3B. 2A is a front view of the valve unit 600, and FIG. 2B is a side view thereof. 3A is a front sectional view around the vacuum breaker portion 680 and the switching valve portion 660, and FIG. 3B is a sectional side view thereof.

  In the following, in order to clarify the positional relationship, the X axis, the Y axis, and the Z axis that are orthogonal to each other are defined, and the positive direction of the Z axis is the vertically upward direction.

  As shown in FIGS. 2A to 3B, the valve unit 600 includes a first unit 601 and a second unit 602.

  The first unit 601 is disposed below the second unit 602, and includes a water inlet 610, a constant flow valve 620 (see FIG. 3A), and a water supply valve 640. The water inlet 610, the constant flow valve 620, and the water supply valve 640 are arranged side by side in the horizontal direction (here, the X-axis direction). The water inlet 610 has a water inlet 611 that opens in the horizontal direction, and guides wash water introduced from the water inlet 611 to the constant flow valve 620 and the water supply valve 640. The constant flow valve 620 is provided at a position downstream of the water inlet 611 in the water inlet 610, for example.

  As shown in FIG. 3A, the water supply valve unit 640 includes a pressure chamber 641, a water supply valve 642, an electromagnetic valve 643, and a housing 644. The pressure chamber 641 has a water inlet 641 a communicating with the water inlet 610 and a water outlet 641 b communicating with the vacuum breaker 680. The water inlet 641a opens in the horizontal direction, and the water outlet 641b opens in the vertical direction. The water supply valve 642 is provided inside the pressure chamber 641 and switches between discharging and stopping the washing water downstream from the water outlet 641b by closing or opening the water outlet 641b.

  The electromagnetic valve 643 is provided on the side of the pressure chamber 641. When the electromagnetic valve 643 is opened, the pressure in the pressure chamber 641 is released, and the water supply valve 642 is pushed down by the water pressure of the washing water. Thereby, the water outlet 641b is opened, and the washing water flows into the vacuum breaker unit 680. On the other hand, when the electromagnetic valve 643 is closed, the pressure in the pressure chamber 641 increases and the water supply valve 642 is pushed up. Thereby, the water outlet 641b is closed, and the supply of the washing water to the vacuum breaker unit 680 is stopped.

  The housing 644 has an upper housing 645 and a lower housing 646, and is formed by assembling them in the vertical direction. The pressure chamber 641 described above is formed inside the housing 644. The upper housing 645 is provided above the lower housing 646 and forms a space above the water supply valve 642 in the pressure chamber 641. The lower housing 646 forms a space below the water supply valve 642 in the pressure chamber 641. The upper housing 645 is formed by integral molding with the water inlet 610.

  As shown in FIGS. 2A and 2B, an upper flange portion 647 is provided on the outer peripheral portion of the upper housing 645, and a lower flange portion 648 is provided on the outer peripheral portion of the lower housing 646. A plurality of upper screw holes 647a into which the screws S are inserted from above are formed in the upper flange portion 647 along the circumferential direction. The lower flange portion 648 is formed with a plurality of lower screw holes 648a at positions corresponding to the plurality of upper screw holes 647a.

  The housing 644 is formed by inserting a screw S into the upper screw hole 647a and the corresponding lower screw hole 648a and fastening the upper housing 645 and the lower housing 646 with the screw S.

  On the other hand, the second unit 602 is disposed on the upper part of the first unit 601 and includes a vacuum breaker unit 680, a switching valve unit 660, and a water discharge unit 670 (a rim-side water discharge unit 671 and a tank-side water discharge unit 672). .

  As shown in FIG. 3B, the vacuum breaker unit 680 includes a vacuum breaker 687 and a water receiver 684. The vacuum breaker 687 includes a water passage 681, an air inlet 682, and a valve body 683.

  The water passage 681 has a water inlet 685 on the upstream side (water supply valve portion 640 side) and a water outlet 686 on the downstream side (switching valve portion 660 side). The water inlet 685 opens in the vertical direction, and the water outlet 686 opens in the horizontal direction. The air introduction port 682 is an opening that communicates the water passage 681 with the outside, is provided above the water inlet 685, and opens in the vertical direction.

  The valve body 683 is provided in the water passage 681 and moves up and down in the water passage 681 by the water pressure of the washing water. The valve body 683 rises due to the water pressure when water flows, and allows the water inlet 685 and the water outlet 686 to communicate with each other. When the water does not flow, the valve body 683 descends due to its own weight and allows the water inlet 685 and the air inlet 682 to communicate with each other.

  The water receiver 684 is provided at the upper part of the air introduction port 682. The water receiver 684 communicates with the air introduction port 682 and receives the wash water overflowing from the air introduction port 682. A drainage channel 390 (see FIG. 1) is connected to the bottom surface of the water receiver 684, and the wash water collected by the water receiver 684 is discharged to the tank 800 via the drainage channel 390.

  The switching valve portion 660 includes a fixed valve body 661, a movable valve body 662, a shaft 666, a motor 667, and a casing portion 668. The fixed valve body 661 has a disk-like opposing surface 661a, and an inlet 663 into which cleaning water flows and two outlets 664 and 665 are formed on the opposing surface 661a. The inflow port 663 and the two outflow ports 664 and 665 have, for example, a shape that extends in a fan shape from the central portion of the facing surface 661a toward the outer peripheral portion, and are arranged side by side with respect to the facing surface 661a. Both the inflow port 663 and the two outflow ports 664 and 665 are open in the horizontal direction.

  The inlet 663 of the switching valve unit 660 is located at the same height as the water outlet 686 of the vacuum breaker unit 680 and is connected to the water outlet 686. Of the two outlets 664 and 665, the outlet 664 communicates with the rim-side water outlet 671, and the outlet 665 communicates with the tank-side water outlet 672.

  The rim-side water discharge portion 671 is connected to the rim-side water supply path 340 and guides wash water to the rim-side water supply path 340. In addition, the tank-side water outlet 672 is connected to the tank-side water supply channel 360 and guides wash water to the tank-side water supply channel 360. The rim side water discharge portion 671 and the tank side water discharge portion 672 are a switching valve portion when the arrangement direction of the vacuum breaker portion 680 and the switching valve portion 660 (the direction perpendicular to the paper surface in FIG. 3A) is the front-rear direction of the switching valve portion 660. It is provided on the side of 660 (in the direction perpendicular to the paper surface in FIG. 3B).

  Although an example in which two outflow ports 664 and 665 are formed in the fixed valve body 661 will be described here, three or more outflow ports may be formed in the fixed valve body 661. Further, the fixed valve body 661 constitutes a flow path from the water supply valve portion 640 to the vacuum breaker portion 680. Such a flow path extends upward (see FIG. 3B), and the cleaning water ascends the flow path and flows into the vacuum breaker unit 680.

  The movable valve body 662 has a fan shape, for example, and is provided at a position in contact with the facing surface 661a of the fixed valve body 661. The shaft 666 rotatably supports the movable valve body 662, and the motor 667 rotates the shaft 666. The motor 667 rotates the shaft 666, and the movable valve body 662 rotates along with the rotation of the shaft 666, so that the movable valve body 662 slides along the facing surface 661a and the opening areas of the outlets 664, 665. To change. As the motor 667, for example, a stepping motor can be used.

  The switching valve unit 660 slides the movable valve body 662 and closes one of the outlets 664 and 665 with the movable valve body 662, thereby rim discharging the washing water flowing in from the inlet 663. It is possible to switch between the water inlet 212 and the tank 800. For example, when the outlet 665 is closed by the movable valve body 662, the wash water that flows in from the inlet 663 flows out to the rim water spouting port 212 through the outlet 664. On the other hand, when the outlet 664 is closed by the movable valve body 662, the wash water that flows in from the inlet 663 flows out to the tank 800 through the outlet 665.

  4A is an exploded perspective view of the valve unit 600, FIG. 4B is an exploded front view thereof, and FIG. 4C is an exploded side view thereof.

  As shown in FIGS. 4A to 4C, the valve unit 600 according to the embodiment can be separated into a first unit 601 and a second unit 602. Thereby, since the 1st unit 601 and the 2nd unit 602 can be rearranged suitably, when changing the composition of vacuum breaker part 680, for example, only the 2nd unit is newly manufactured and it changes into the existing 1st unit 601. Just assemble. Thus, according to the valve unit 600 which concerns on embodiment, the highly versatile washing water supply apparatus 1 can be provided.

  Further, by making the valve unit 600 divide into the first unit 601 and the second unit 602, it is possible to select a material according to the required strength for each unit.

  Specifically, in the valve unit 600 according to the embodiment, the first unit 601 is formed in the flow path from the water inlet 610 to the water outlet 670 (the rim side water outlet 671 and the tank side water outlet 672). One flow path P1 (see FIG. 3A) is formed of a material having higher rigidity than the second flow path P2 (see FIG. 3B) formed in the second unit 602 among the flow paths. In this way, the first flow path P1 that is a primary flow path that requires relatively high strength is formed of a material that is more rigid than the second flow path P2 that is a secondary flow path. Cost can be kept low.

  The first flow path P1 is configured by the water inlet 610 and the upper housing 645 and the lower housing 646 of the water supply valve section 640, and the second flow path P2 is configured by the switching valve section 660 and the vacuum breaker section 680. . The water inlet 610, the upper housing 645, and the lower housing 646 constituting the first flow path P1 are formed of, for example, PPS (polyphenylene sulfide), and the switching valve part 660 and the vacuum breaker part 680 constituting the second flow path P2. Is formed of POM (polyacetal) or PP (polypropylene).

  Next, the structure of the connection part of the 1st unit 601 and the 2nd unit 602 is demonstrated. The water supply valve portion 640 of the first unit 601 includes a cylindrical connection convex portion 650a that opens in the vertical direction on the downstream side of the water outlet 641b (see FIG. 3A). The fixed valve body 661 of the second unit 602 has a cylindrical shape that has an inner diameter larger than that of the connecting convex portion 650a and opens in the vertical direction on the upstream side of the water inlet 685 (see FIG. 3B) of the vacuum breaker portion 680. Connecting recesses 650b.

  As shown in FIG. 3B, the first unit 601 and the second unit 602 are connected by fitting the connection convex portion 650a and the connection concave portion 650b. Thereby, the flow path from the water supply valve part 640 of the first unit 601 to the vacuum breaker part 680 of the second unit 602 is formed. A seal member 650c such as an O-ring is interposed between the connection convex portion 650a and the connection concave portion 650b.

  As shown in FIG. 4A, a first engagement portion 651 and a second engagement portion 653 are provided on the outer peripheral side of the connection protrusion 650a with a predetermined distance from the connection protrusion 650a. The first engaging portion 651 includes a first groove portion 651a extending along the vertical direction, a second groove portion 651b communicating with the first groove portion 651a, extending along the circumferential direction of the connection convex portion 650a, and a first groove portion 651a. And a projecting portion 651c that narrows the width of the two groove portions 651b. The second engagement portion 653 has a third groove portion 653a extending along the circumferential direction of the connection convex portion 650a.

  Further, as shown in FIG. 4C, a first convex portion 652 and a second convex portion 654 that protrude outward in the radial direction of the connection concave portion 650b are provided on the outer peripheral surface of the connection concave portion 650b.

  Then, as shown in FIG. 4B, after the second unit 602 is lowered and the first convex portion 652 is fitted into the first groove portion 651a of the first engaging portion 651, the second unit 602 is twisted, The first convex portion 652 is moved along the second groove portion 651b until the convex portion 652 gets over the protruding portion 651c. Thereby, the 1st convex part 652 and the 1st engaging part 651 engage. Further, by performing the above-described operation, the second convex portion 654 is fitted into the third groove portion 653a of the second engaging portion 653, and the second convex portion 654 and the second engaging portion 653 are engaged.

  As described above, the first engaging portion 651 and the first convex portion 652 are engaged, and the second engaging portion 653 and the second convex portion 654 are engaged. Even if an upward force is applied to the second unit 602, the second unit 602 can be prevented from coming off from the first unit 601. Therefore, the connection between the first unit 601 and the second unit 602 can be made more reliable.

  FIG. 5A is a plan view of a flush toilet 100 incorporating the flush water supply device 1. FIG. 5B is a plan view showing a state where the second unit 602 is removed from the valve unit 600.

  As shown in FIG. 5A, the first unit 601 is disposed below the second unit 602. When the first unit 601 and the second unit 602 are viewed from above, a plurality of units provided in the first unit 601 are provided. The upper screw hole 647 a is partly hidden by the second unit 602. In the conventional valve unit, the upper screw hole that cannot be seen from above cannot be accessed from above, so that the screw is inserted from below, that is, from the lower housing side. However, in this case, the entire valve unit has to be removed from the flush toilet 100, and there is room for improvement in terms of workability and maintainability.

  On the other hand, since the valve unit 600 according to the embodiment can be divided into the first unit 601 and the second unit 602, at least one of the plurality of upper screw holes 647a is provided at a position hidden by the second unit 602. Even if it exists, as shown to FIG. 5B, by removing the 2nd unit 602, the screw S can be inserted from upper direction with respect to all the upper side screw holes 647a. Therefore, workability and maintainability can be improved as compared with the prior art.

<3. Example of rearrangement of valve knit>
Next, a rearrangement example of the valve unit 600 will be described with reference to FIGS. 6A and 6B. FIG. 6A is a diagram illustrating a configuration of a valve unit according to a first modification. FIG. 6B is a diagram illustrating a configuration of a valve unit according to a second modification.

  For example, as shown in FIG. 6A, a valve unit 600A according to a first modification is configured by assembling a second unit 602A with respect to a first unit 601. The second unit 602A includes a flow path on the downstream side of the switching valve section 660, specifically, a flow path from the switching valve section 660 to the tank 800 and a flow path from the switching valve section 660 to the rim spout 212. And a vacuum breaker 680, respectively.

  6B, the valve unit 600B according to the second modification is configured by assembling the second unit 602B with respect to the first unit 601. The second unit 602B includes a vacuum breaker unit 680 and does not include the switching valve unit 660. Such a valve unit 600B is incorporated into a toilet body having a single water outlet, for example.

  In addition, as the second unit, the switching destination by the switching valve unit is changed to three systems (in addition to the rim water spouting port 212 and the tank 800, a hand washer, a local cleaning nozzle, etc.), and the flow path switching means is changed from the motor 667. It is also possible to combine the solenoid valve or the one changed to manual with the first unit 601.

  The first unit also has, for example, a diameter of the water supply valve 642 changed according to a required flow rate, or a valve opening means of the water supply valve 642 changed from an electromagnetic valve 643 to a stepping motor, servo motor, or manual operation. Can be appropriately combined with the second units 602, 602A, 602B and the like described above.

  As described above, by appropriately combining the first unit and the second unit, it is possible to cope with a wide variety of toilet bodies while suppressing manufacturing costs.

<4. Other configurations of valve unit>
In the valve unit 600 according to the embodiment, the vacuum breaker unit 680 is provided on the upstream side of the switching valve unit 660. This point will be described.

  For example, when switching from the state in which the outflow port 664 is opened to the state in which the outflow port 665 is opened, the switching valve unit 660 is in a state where both the outflow ports 664 and 665 communicate with the inflow port 663, that is, washing water Passes through a state (the state shown in FIG. 3A) flowing out from both outlets 664 and 665. In this state, the flow rate of the wash water flowing through the outlets 664 and 665 is less than the flow rate of the wash water flowing upstream of the switching valve unit 660.

  On the other hand, the vacuum breaker part 680 which concerns on the washing water supply apparatus 1 which concerns on embodiment is provided in the upstream of the switching valve part 660. FIG. For this reason, since the generation | occurrence | production of the malfunctioning of the valve body 683 by the fall of a water pressure is suppressed, the quantity of overflow water can be reduced. Thereby, since the water receiving part 684 can be reduced in size compared with the past, the washing water supply apparatus 1 can be reduced in size compared with the past.

  As shown in FIG. 3B, the casing portion 668 is disposed opposite to the facing surface 661 a of the fixed valve body 661 with the movable valve body 662 interposed therebetween, and the washing water from the inlet 663 to the outlets 664 and 665 together with the fixed valve body 661. An internal space to be a flow path is formed.

  In the cleaning water supply apparatus 1 according to the embodiment, the switching valve unit 660, the rim side water supply channel 340, the tank side water supply channel 360, and the like disposed on the downstream side of the vacuum breaker unit 680 are located above the upper surface of the vacuum breaker unit 680. Located in a low position. Specifically, the switching valve unit 660, the rim side water supply channel 340, the tank side water supply channel 360, and the like are disposed at a position lower than the upper surface of the water receiving unit 684.

  Here, it is defined that the attachment position of the vacuum breaker portion 680 should be a position higher than the overflow surface in the toilet body 200 by a predetermined amount or more. For this reason, the vacuum breaker part 680 cannot be attached to a position lower than the standard. Therefore, in the cleaning water supply apparatus 1 according to the embodiment, the switching valve unit 660, the rim side water supply channel 340, the tank side water supply channel 360, and the like are provided below the vacuum breaker unit 680. Thereby, since the height dimension of the washing water supply apparatus 1 can be made as low as possible, the washing water supply apparatus 1 can be further downsized.

  Moreover, as shown to FIG. 3A, in the switching valve part 660 which concerns on embodiment, the outflow ports 664 and 665 are formed below the inflow port 663. As shown in FIG.

  Since residual water may be generated downstream of the vacuum breaker unit 680, when the switching valve unit 660 is provided on the downstream side of the vacuum breaker unit 680, residual water may be generated in the switching valve unit 660. The remaining water is accumulated in a space below the outflow ports 664 and 665 in the switching valve portion 660.

  As for the conventional switching valve part, the outflow port was formed above the inflow port. For this reason, if the conventional switching valve part is provided on the downstream side of the vacuum breaker part, a large amount of residual water may be generated in the switching valve part. For this reason, conventionally, the switching valve part was provided in the upstream of the vacuum breaker part so that residual water might not arise in the switching valve part.

  On the other hand, in the washing water supply device 1 according to the embodiment, the outlets 664 and 665 are formed below the inlet 663 as a countermeasure against the remaining water of the switching valve unit 660. Thereby, compared with the case where an outflow port is formed above an inflow port like the conventional switching valve part, the space below the outflow ports 664 and 665 in the switching valve part 660 becomes small. For this reason, compared with the conventional switching valve part, the residual water in the switching valve part 660 can be reduced, and the water flow failure at the time of freezing and the generation | occurrence | production of damage resulting from residual water can be suppressed.

  Furthermore, in the cleaning water supply device 1 according to the embodiment, as illustrated in FIG. 3B, the facing surface to the outflow ports 664 and 665 among the facing surfaces of the casing portion 668 of the switching valve portion 660 to the fixed valve body 661. 668a is brought closer to the fixed valve body 661 than the surface 668b facing the inlet 663.

  Thereby, since the volume of the space below the outflow ports 664 and 665, which are spaces where residual water is generated, can be reduced, the amount of residual water accumulated in the space can be reduced. Therefore, the remaining water in the switching valve part 660 can be further reduced.

  Further, in the cleaning water supply device 1 according to the embodiment, in order to discharge the remaining water in the switching valve unit 660 to the outside of the switching valve unit 660, as shown in FIG. 3A, the movable valve body 662 of the switching valve unit 660 is provided. In contrast, discharge paths 669 and 669 are provided.

  The movable valve body 662 includes discharge paths 669 and 669 on a surface facing the casing portion 668 (see FIG. 3B). The discharge paths 669 and 669 are, for example, grooves extending linearly from a peripheral edge of the movable valve body 662 that faces the outer side in the rotational direction of the movable valve body 662 to a peripheral edge that faces the rotational direction of the movable valve body 662. is there. One of the two discharge paths 669 and 669 extends toward the outflow port 664, and the other extends toward the outflow port 665.

  As described above, the remaining water accumulates in a space below the outlets 664 and 665 in the switching valve portion 660. The discharge passages 669 and 669 extend to a space below the outlets 664 and 665, and the cleaning water accumulated in the space passes through the discharge passages 669 and 669 from the lower ends of the discharge passages 669 and 669 by capillary action. After rising and moving to the upper end, it is discharged out of the switching valve portion 660 from the outlets 664 and 665.

  As described above, in the cleaning water supply apparatus 1 according to the embodiment, the residual water in the switching valve portion 660 is guided to the outlets 664 and 665 by capillary action using the discharge passages 669 and 669 and switched from the outlets 664 and 665. It was decided to discharge to the outside of the valve part 660. Therefore, the remaining water in the switching valve part 660 can be further reduced.

  The lower ends of the discharge passages 669 and 669 are always at the lowest positions of the outlets 664 and 665 in the movable range of the movable valve body 662 with the outlet 665 closed and the outlet 664 closed. It is preferable to be provided in the following location. As a result, the washing water accumulated in the outlets 664 and 665 can be more reliably discharged to the outside of the switching valve portion 660.

  Here, an example in which the two discharge passages 669 and 669 are provided in the movable valve body 662 has been described. However, the movable valve body 662 may be provided with at least one discharge passage 669. Here, an example in which the straight discharge passages 669 and 669 are provided in the movable valve body 662 has been described. However, the discharge passage does not necessarily have to be a straight line, for example, a curved line shape, a wavy line shape, It may be formed in a zigzag shape.

  Here, the discharge path 669 is provided in the movable valve body 662, but the discharge path may be provided in the fixed valve body 661. For example, the fixed valve body 661 has one end provided at a position below the lowest position of the outlets 664 and 665, and the other end has a groove communicating with any one of the outlets 664 and 665 as a discharge path. Also good. It is also possible to provide a discharge path in both the movable valve body 662 and the fixed valve body 661.

  Here, the discharge paths 669 and 669 are provided on the surface of the movable valve body 662 facing the casing portion 668, but the discharge paths may be provided on the peripheral surface of the movable valve body 662. The surface of the movable valve body 662 facing the casing portion 668 (see FIG. 3B) may be subjected to a texture process, and the surface subjected to the texture process may be used as a discharge path.

  As described above, the cleaning water supply device 1 according to the embodiment includes the water inlet 610, the water supply valve 640, the vacuum breaker 680, and the water outlet 670. Washing water is introduced into the water inlet 610. The water supply valve unit 640 includes a water supply valve 642 that is provided on the downstream side of the water input unit 610 and opens and closes the flow path. The vacuum breaker unit 680 is provided on the downstream side of the water supply valve unit 640 and includes a vacuum breaker 687. The water outlet 670 is provided on the downstream side of the vacuum breaker 680, and the wash water is led out. The cleaning water supply apparatus 1 according to the embodiment is configured to be separable into a first unit 601 including a water inlet 610 and a water supply valve 640, and a second unit 602 including a vacuum breaker 680 and a water outlet 670. The

  Therefore, according to the cleaning water supply device 1 according to the embodiment, versatility can be improved.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications can be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 Washing water supply apparatus 600 Valve unit 610 Inlet part 620 Constant flow valve 640 Supply valve part 660 Switching valve part 680 Vacuum breaker part 670 Outlet part 671 Rim side outlet part 672 Tank side outlet part 672

Claims (6)

A cleaning water supply device for supplying cleaning water to the toilet body,
A water inlet where cleaning water is introduced;
A water supply valve portion including a water supply valve that is provided on the downstream side of the water inlet and opens and closes the flow path;
A vacuum breaker unit provided on the downstream side of the water supply valve unit, including a vacuum breaker;
Provided on the downstream side of the vacuum breaker unit, and a water discharge unit from which washing water is led out,
A cleaning water supply device, which is configured to be separable into a first unit including the water inlet and the water supply valve, and a second unit including the vacuum breaker and the water outlet. Of the channels from the water inlet to the water outlet, the first channel formed in the first unit is:
The washing water according to claim 1, wherein the washing water is formed of a material having rigidity higher than that of the second channel formed in the second unit among the channels from the water inlet to the water outlet. Feeding device. The first unit is:
Disposed under the second unit,
The water supply valve part is
An upper housing in which a plurality of upper screw holes into which screws are inserted from above are formed;
A lower housing having a plurality of lower screw holes corresponding to the plurality of upper screw holes,
At least one of the plurality of upper screw holes is
The cleaning water supply device according to claim 1 or 2, wherein the cleaning water supply device is provided at a position hidden by the second unit when the first unit and the second unit are viewed from above. The second unit is
The cleaning water supply device according to any one of claims 1 to 3, further comprising a switching valve unit that is provided on a downstream side of the water supply valve unit and switches an outflow destination of the cleaning water. The vacuum breaker section is
A water passage having a water inlet on the upstream side and a water outlet on the downstream side, an air introduction port communicating the water passage with the outside, and a water passage provided in the water passage and operated by the water pressure of the washing water. A valve body that allows the water inlet and the water outlet to communicate with each other when the water flows, and the water inlet and the air inlet when the water does not flow; and a water receiving portion that receives the wash water overflowing from the air inlet. Have
The switching valve portion is
The cleaning water supply device according to claim 4, wherein the cleaning water supply device is provided downstream of the vacuum breaker unit.   A flush toilet comprising the flush water supply device according to any one of claims 1 to 5.

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