JP7259385B2 - Water discharge device - Google Patents

Description

Disclosed embodiments relate to water discharging devices.

2. Description of the Related Art Conventionally, a water discharger is known that has a rectification function that weakens the momentum of discharged water or suppresses turbulence. For example, in Patent Document 1, a diversion section branching from a main flow section, a diffusion member for diffusing water flowing from the main flow section to the diversion section to the entire interior of the diversion section, two rectifying networks, and a cap are provided. A water discharge device is disclosed. The diffusing member and the two rectifying networks are fixedly arranged in the space formed by the flow dividing section and the cap by being pressed against the flow dividing section by the cap.

Further, in the water discharger described in Patent Document 1, in order to suppress the occurrence of water discharge failure due to freezing, an opening large enough not to form a water film is provided at the center of each of the two rectifying nets. there is

JP 2010-222909 A

However, in the conventional technology described above, there is a possibility that the flow rate difference between the water flowing out from the anti-freezing openings and the water flowing out from the meshes of the rectifying network may deteriorate the rectifying function. That is, for example, when the flow velocity of water flowing out from the openings for anti-freezing is higher than the flow velocity of water flowing out from the meshes of the rectifying net, the water flowing out from the meshes of the rectifying net is the water flowing out from the openings for anti-freezing. As a result, the water discharged from the water discharging device becomes thinner and the momentum increases, resulting in noise, water splashing, and the like. In addition, when the flow velocity of water flowing out of the mesh of the straightening net is faster than the flow velocity of water flowing out of the opening for anti-freezing, the water flowing out of the opening for anti-freezing is attracted to the water flowing out of the mesh of the straightening net. As a result, the water discharged from the water discharging device is diffused, and noise, water splashing, and the like are likely to occur.

One aspect of the embodiments has been made in view of the above, and an object thereof is to provide a water discharging device capable of suppressing deterioration of the rectifying function while providing an anti-freezing opening.

A water discharger according to an aspect of an embodiment includes a water supply channel, a water discharge main body branching from the water supply channel, and a diffusion part for diffusing water flowing into the water discharge main body from the water supply channel. a central opening provided on the downstream side of the diffusion section; a mesh-like rectifying section provided around the central opening; An extending first water discharge channel portion, and a second water discharge channel portion extending in the one direction and communicating with the straightening portion on the downstream side of the straightening portion.

By dividing the flow path of the water flowing out from the central opening and the flow path of the water flowing out from the straightening section, it becomes difficult for the water flowing out from the central opening and the water flowing out from the straightening section to interfere with each other. Therefore, even if there is a difference between the flow velocity of the water flowing out from the central opening and the flow velocity of the water flowing out from the straightening section, one side of the water is less likely to be attracted to the other side of the water. Straight water can be discharged without narrowing or spreading. Since the water is discharged straight, it is possible to suppress the occurrence of noise, water splashes, etc., compared to the case where the water is thinned or diffused. Therefore, according to the water discharging device according to one aspect of the embodiment, it is possible to suppress deterioration of the rectifying function of the diffusing portion and the rectifying portion while providing the central opening for anti-freezing.

In addition, the inner peripheral surface of the water discharge main body and the central opening are circular in bottom view, and the rectifying portion includes a plurality of linear portions radially arranged around the central opening and a circle concentric with the central opening. and at least one annulus arranged in a shape.

If the mesh of the rectifying portion were to be grid-like, the opening areas of the individual meshes would vary greatly, and the flow of water flowing through the rectifying portion might become non-uniform. On the other hand, according to the rectifying portion according to one aspect of the embodiment, since it includes radially arranged straight portions and concentrically arranged annular portions, the opening area of each mesh can be reduced as much as possible. can be made uniform. Therefore, it is possible to prevent the flow of water flowing out of the straightening section from becoming non-uniform.

Further, the annular portion protrudes downstream from the plurality of linear portions. Thereby, the flow of water flowing on the downstream side of the linear portion can be joined by the annular portion. Therefore, the water flowing out from the rectifying section is less likely to form a shower, and noise, water splashing, etc. can be suppressed, so that the rectifying function can be enhanced.

Moreover, the projecting length of the annular portion is shorter than at least one of the first water discharge channel portion and the second water discharge channel portion. If the projection length of the annular portion is too long, the rectifying function of the rectifying portion may deteriorate. Therefore, by preventing the projecting length of the annular portion from being excessively long, deterioration of the rectifying function can be suppressed.

In addition, the water discharger according to one aspect of the embodiment includes a cap that covers the water discharge main body, and the cap includes the diffusion portion, the central opening, the straightening portion, the first water discharge flow path portion, and the second water discharge channel portion. A water discharge channel portion is integrally formed. Thereby, compared with the case where these are comprised by another member, a water discharging apparatus can be reduced in size.

Further, the cap has a flat surface between the central opening and the rectifying portion, and the diffusing portion includes an umbrella member protruding toward the upstream side and a base end portion provided on the flat surface, and a plurality of strut members supporting the umbrella member at the distal end.

The water that has flowed into the water discharge main body from the water supply flow path is diffused by the diffusion section, so that the water can uniformly flow downstream in the water discharge main body without unevenness.

Further, the diffuser opening and the central opening formed by the umbrella member, two adjacent strut members out of the plurality of strut members, and the flat surface each have an opening area that satisfies anti-freezing conditions. In this way, not only the central opening but also the diffusing portion opening has an opening area that satisfies the anti-freezing condition, so that the occurrence of poor water discharge due to freezing can be more reliably suppressed.

According to one aspect of the embodiment, deterioration of the rectifying function can be suppressed while providing the opening for anti-freezing.

FIG. 1 is a diagram showing the configuration of a flush toilet according to an embodiment. FIG. 2 is a perspective view of the washing water tank device according to the embodiment. FIG. 3 is a plan view of the washing water tank device according to the embodiment. FIG. 4 is a sectional view along line IV-IV shown in FIG. FIG. 5 is an exploded perspective view of the spout portion according to the embodiment. FIG. 6 is a cross-sectional view of the spout portion according to the embodiment. FIG. 7 is a plan view of the cap according to the embodiment; FIG. 8 is a bottom view of the cap according to the embodiment. FIG. 9 is a diagram for explaining the flow of washing water in a straightening section in which an annular portion protrudes upstream from a linear portion. FIG. 10 is a diagram for explaining the flow of washing water when the annular portion protrudes downstream from the straight portion.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to an accompanying drawing, embodiment of the discharging apparatus which this application discloses is described in detail. In addition, this invention is not limited by embodiment shown below.

<Configuration of flush toilet>
First, the configuration of a flush toilet provided with a water discharging device according to an embodiment will be described with reference to FIG. FIG. 1 is a diagram showing the configuration of a flush toilet according to an embodiment.

For convenience of explanation, FIG. 1 shows a three-dimensional orthogonal coordinate system including the Z-axis whose positive direction is vertically upward. Further, hereinafter, the surface on the positive side of the X-axis is defined as the "left side", the surface on the negative side of the X-axis is defined as the "right side", the surface on the positive side of the Y-axis is defined as the "front", and the surface on the negative side of the Y-axis is defined as the "front". The side surface is defined as the "back surface". Therefore, hereinafter, the X-axis direction may be referred to as the left-right direction, the Y-axis direction as the front-rear direction, and the Z-axis direction as the up-down direction.

As shown in FIG. 1 , the flush toilet 1 includes a toilet body 2 , an exterior cover 3 , and a flush water tank device 4 . The toilet bowl body 2 is installed on the floor surface of the toilet room, and the exterior cover 3 is installed on the upper part of the toilet bowl body 2 . Also, the washing water tank device 4 is arranged inside the exterior cover 3 . In addition, the toilet body 2 is not limited to a floor-mounted type, and may be a wall-mounted type. Also, the flush water tank device 4 may be installed at a location away from the toilet body 2 .

The toilet bowl main body 2 has a bowl portion 21 for receiving waste, a water conduit 22 for guiding wash water supplied from the wash water tank device 4 to the bowl portion 21, and an inlet connected to a lower portion of the bowl portion 21. and a drain trap line 23 for draining the waste into a drain line (not shown). The drainage trap line 23 constitutes a trap section.

The bowl portion 21 is formed with a first water outlet 24 and a second water outlet 25 for discharging washing water supplied from the water conduit 22 . The first water spout 24 is formed in the upper portion of the bowl portion 21 , and the washing water discharged from the first water spout 24 descends while swirling to wash the bowl portion 21 . The second water outlet 25 is formed in the lower portion of the bowl portion 21, and the wash water (storage surface W0 indicated by a dashed line) stored in the lower portion of the bowl portion 21 generates a swirling flow that swirls in the vertical direction. Let

The drainage trap pipeline 23 has an inlet below the storage surface W0, and includes an ascending channel portion extending upward from the inlet and a descending channel portion extending downward from the end of the ascending channel portion and connected to the drain pipe. have.

The flush water tank device 4 has a tank portion for storing flush water supplied from an external water supply source, and supplies the flush water stored in the tank portion to the water conduit 22 of the toilet body 2 through a drain port 51 . do. The washing water tank device 4 is covered with an exterior cover 3 so that the washing water tank device 4 is not visually recognized by the user.

<Configuration of washing water tank device>
Next, the configuration of the wash water tank device 4 will be described with reference to FIGS. 2 to 4. FIG. FIG. 2 is a perspective view of the washing water tank device 4 according to the embodiment. FIG. 3 is a plan view of the washing water tank device 4 according to the embodiment. FIG. 4 is a sectional view along line IV-IV shown in FIG.

As shown in FIGS. 2 to 4, the washing water tank device 4 includes a tank body 5, a lid 6, a water supply device 7, a drainage device 8, and a rotation device 9.

The tank main body 5 stores washing water supplied from a water supply device 7, which will be described later. A drain port 51 is provided at the bottom of the tank body 5 . The lid 6 is provided on the top of the tank body 5 and covers the upper opening of the tank body 5 . The lid 6 is provided with an opening 61 that communicates with the inside of the tank body 5 .

The water supply device 7 is connected to an external water supply source (not shown) through a water supply pipe L, and flushes water supplied from the water supply source to the tank body 5 from above the tank body 5 through the opening 61 of the lid 6 . inside the

The water supply device 7 includes a primary side water supply channel portion 71 (see FIG. 4 ), a secondary side water supply channel portion 72 , an intermediate channel portion 73 , and a spout portion 74 . The primary-side water supply channel portion 71 extends vertically and is connected to the water supply pipe L (see FIG. 2) at its lower end. The secondary water supply channel portion 72 has a cylindrical shape with a closed end (downstream end) and extends horizontally (here, in the left-right direction) toward the opening 61 provided in the lid 6 . . The intermediate flow path portion 73 is provided between the primary side water supply flow path portion 71 and the secondary side water supply flow path portion 72, and connects the primary side water supply flow path portion 71 and the secondary side water supply flow path portion 72. . The intermediate flow passage portion 73 includes, for example, a solenoid valve device 75 that switches between discharging water to the secondary side water supply flow passage portion 72 and stopping the water, and a float that moves up and down in conjunction with the water level in the tank main body 5 . A mechanical on-off valve device 76 for switching between water discharge to the side water supply channel portion 72 and water stop is provided.

The spout 74 is provided with a water outlet 74 that weakens and straightens the flow of cleansing water in order to suppress the noise and splashes that occur when the cleansing water discharged from the water supply device 7 lands on the water surface in the tank body 5 . It has a rectifying structure that adjusts the flow of washing water so that it is discharged into the water. In addition, the spout portion 74 has an anti-freezing structure for suppressing the occurrence of water spouting failure due to freezing. A specific configuration of the spout portion 74 will be described later.

The drainage device 8 is arranged inside the tank body 5 . The drainage device 8 causes the wash water stored in the tank body 5 to flow out to the conduit 22 (see FIG. 1) by opening the drainage port 51 .

The drainage device 8 comprises an overflow pipe 81 , a drainage valve 82 and a guide 83 . The overflow pipe 81 is a cylindrical pipe member extending vertically. The overflow pipe 81 communicates with the drain port 51 , and when the water level of the wash water in the tank body 5 exceeds the height position of the upper end of the overflow pipe 81 , the inside of the overflow pipe 81 flows from the upper end of the overflow pipe 81 . The wash water that has flowed into is discharged to the water conduit 22 through the drain port 51 .

A drain valve 82 is provided at the lower end of the overflow pipe 81 and closes the drain port 51 . The guide 83 is provided so as to surround the overflow pipe 81, and guides the vertical movement of the overflow pipe 81 by the rotating device 9, which will be described later.

The rotating device 9 opens and closes the drain valve 82 by vertically moving the overflow pipe 81 . The rotating device 9 includes a driving portion 91 that generates a rotational force, a shaft portion 92 that protrudes horizontally from the driving portion 91 and is rotated by the rotational force of the driving portion 91, and one end is attached to the tip of the shaft portion 92, and a connection member 93 such as a ball chain, the other end of which is attached to the overflow pipe 81 . The drive unit 91 includes, for example, a rotary motor such as a DC motor, and a casing that houses the rotary motor.

When the driving portion 91 rotates the shaft portion 92 so as to lift the connecting member 93 upward, the overflow pipe 81 and the drain valve 82 provided on the overflow pipe 81 are lifted together with the connecting member 93, and the drain port 51 is opened. be done. As a result, the wash water stored in the tank main body 5 is supplied from the drain port 51 to the water conduit 22 . Further, when the driving portion 91 rotates the shaft portion 92 so as to pull the connecting member 93 downward, the overflow pipe 81 and the drain valve 82 descend together with the connecting member 93 . As a result, the drain port 51 is closed by the drain valve 82 , thereby stopping the water supply from the tank body 5 to the water conduit 22 .

The rotating device 9 also includes a lever 94 for manually rotating the shaft portion 92 . The user can manually open and close the drain valve 82 by operating the lever 94, for example, in the event of a power failure.

<Specific configuration of spout portion in water supply device>
Next, a specific configuration of the spout portion 74 will be described with reference to FIGS. 5 to 8. FIG. FIG. 5 is an exploded perspective view of the spout portion 74 according to the embodiment. FIG. 6 is a cross-sectional view of the spout portion 74 according to the embodiment. FIG. 7 is a plan view of the cap according to the embodiment; FIG. 8 is a bottom view of the cap according to the embodiment.

As shown in FIGS. 5 and 6 , the water discharge port portion 74 according to the embodiment includes a water discharge body portion 101 branching from the secondary water supply flow path portion 72 and a cap 102 covering the water discharge body portion 101 .

<Structure of water discharge body>
The water discharge body portion 101 is provided on the outer peripheral portion of the distal end of the secondary side water supply channel portion 72 and extends in a direction orthogonal to the extending direction of the secondary side water supply channel portion 72 . After flowing to the tip of the secondary water supply channel portion 72 , the wash water changes its flow direction by about 90 degrees and flows into the water discharge main portion 101 . The channel formed inside the water discharge main body 101 is cylindrical, and its diameter increases stepwise toward the downstream side (see FIG. 6). Further, a screw groove 111 for attaching the cap 102 is formed on the outer periphery of the water discharge main body 101 . The secondary water supply channel portion 72 and the water discharge body portion 101 are integrally formed of resin.

<Configuration of cap>
The cap 102 has a cylindrical inner peripheral surface with a diameter larger than that of the water discharge main body 101, and a screw groove (not shown) that is screwed with the screw groove 111 of the water discharge main body 101 is formed on the inner peripheral surface. be done. The screw groove (not shown) of the cap 102 and the screw groove 111 of the water discharge main body 101 are screwed together, so that the cap 102 is attached to the water discharge main body 101 .

The cap 102 includes a diffusion portion 121 , a central opening 122 , a straightening portion 123 , a first water discharge channel portion 124 and a second water discharge channel portion 125 . These diffusion portion 121 , central opening 122 , rectifying portion 123 , first water discharge channel portion 124 and second water discharge channel portion 125 are integrally formed as part of cap 102 .

<Structure of Diffusion Portion>
The diffusing portion 121 diffuses the cleansing water that has flowed into the water discharging body portion 101 from the secondary water supply flow channel portion 72 to the entire flow channel in the water discharging body portion 101 . Specifically, as shown in FIGS. 6 and 7, the diffusing portion 121 includes a truncated cone-shaped canopy member 121a that protrudes toward the upstream side and a plurality of umbrella members that support the canopy member 121a from below (downstream side). Here, there are three strut members 121b. The cap 102 has a first flat surface 126 between a central opening 122 and a rectifying portion 123, which will be described later, and a second flat surface 127 radially outward of the rectifying portion 123. 121 b has a base end on the first flat surface 126 . In addition, the strut members 121b are inclined so as to approach each other toward the upstream side, and support the umbrella member 121a at their distal ends. Therefore, the diffusing portion 121 is formed in a truncated cone shape as a whole, the diameter of which increases from the upstream side to the downstream side. The plurality of support members 121b are arranged at regular intervals.

As shown in FIG. 6, the direction of flow of the cleansing water changes when it flows from the secondary water supply channel portion 72 into the water discharge main body 101. There is a deviation in the flow. Specifically, the flow of cleansing water deviates toward the distal end side of the secondary water supply channel portion 72 .

The water discharge port portion 74 can suppress such bias in the flow of washing water by means of the diffusion portion 121 . That is, since the canopy member 121a of the diffusing portion 121 protrudes toward the upstream side, the gap between the canopy member 121a and the inner peripheral surface of the water discharge body portion 101 is a narrow space. Therefore, part of the wash water that has flowed into the water discharge main body 101 from the secondary water supply channel portion 72 and is received by the umbrella member 121 a is removed from the gap between the umbrella member 121 a and the inner peripheral surface of the water discharge main body 101 . Of these, the umbrella member 121a passes through a region closer to the tip side of the secondary water supply flow path portion 72 (hereinafter referred to as “unevenly distributed portion B”), but the remaining portion avoids the unevenly distributed portion B. and flows downstream. In this manner, the wash water that has flowed into the water discharge main body 101 from the secondary water supply channel portion 72 is diffused by the diffusing portion 121, so that it can flow uniformly downstream in the water discharge main body 101 without unevenness. can.

Further, the diffusion portion 121 has a plurality of diffusion portion openings 121c. The diffuser opening 121c is a vertically elongated opening formed by the umbrella member 121a, two adjacent strut members 121b among the plurality of strut members 121b, and the first flat surface 126. As shown in FIG. Part of the cleansing water that has flowed into the water discharge main body 101 passes through the diffusion part opening 121c and flows into the central opening 122, which will be described later.

<Configuration of Central Opening>
As shown in FIGS. 6 and 8, the central opening 122 is a circular opening provided downstream of the diffusing portion 121 and formed in the center of the cap 102 in plan view. Specifically, it is formed in the center of the first flat surface 126 . The central opening 122 has substantially the same diameter as the largest diameter portion of the canopy member 121a of the diffusing portion 121, and is arranged below the canopy member 121a.

By providing the central opening 122, water can be passed through the central opening 122 even if the washing water remaining in the rectifying section 123 freezes and the rectifying section 123 becomes unable to pass water. The central opening 122 has an open area that satisfies predetermined antifreeze conditions.

In addition, in the spout portion 74 according to the embodiment, not only the central opening 122 but also the diffusion portion openings 121c of the diffusion portion 121 described above have opening areas that satisfy the same freeze prevention conditions. As described above, according to the water discharge port portion 74 according to the embodiment, both the central opening 122 and the diffusion portion opening 121c have opening areas that satisfy the anti-freezing conditions, so the occurrence of poor water discharge due to freezing is more reliably suppressed. can do. The opening areas of the central opening 122 and the diffusing portion opening 121c are at least larger than the opening areas of individual openings (mesh) in the rectifying portion 123, which will be described later.

<Structure of Rectifier>
As shown in FIGS. 6 and 8 , the straightening section 123 is provided around the central opening 122 . Specifically, the rectifying portion 123 includes a plurality of linear portions 123a arranged radially around the central opening 122, and a plurality of (here, two) annular portions arranged concentrically with the central opening 122. 123b. The linear portion 123 a has a linear shape in a plan view, and is formed so as to bridge between the first flat surface 126 and the second flat surface 127 . Both the outer peripheral surface of the first flat surface 126 and the inner peripheral surface of the second flat surface 127 are circular in plan view. The annular portion 123b has an annular shape in plan view, and is arranged in the middle of the linear portion 123a. The rectifying portion 123 is formed in a mesh shape by the plurality of linear portions 123a and the plurality of annular portions 123b. At least one annular portion 123b may be provided. In this specification, the term "mesh-like" refers to a shape in which a plurality of fine openings are densely formed by arranging a plurality of lines to intersect with each other, and the shape of each opening is I don't mind. As shown in FIGS. 7 and 8 , the rectifying section 123 according to the embodiment has an arch-shaped (curved rectangular) opening that bulges toward the inner peripheral surface of the second flat surface 127 .

When the washing water passes through the rectifying section 123, bubbles in the washing water are removed and the flow velocity of the washing water decreases. Thereby, the flow of washing water can be made uniform. The wash water that cannot smoothly pass through the mesh of the rectifying portion 123 temporarily stays inside the water discharge body portion 101 and then flows out from the central opening 122 or the rectifying portion 123 . As described above, since the flow rate of the cleansing water is also reduced by the cleansing water remaining inside the water discharge main body 101, the flow of the cleansing water can be made more uniform.

As described above, the outer peripheral surface of the first flat surface 126 and the inner peripheral surface of the second flat surface 127 have a circular shape in plan view. For this reason, if the mesh of the rectifying section 123 were to have a grid pattern, the opening area of each mesh would vary greatly, and the flow of washing water flowing through the rectifying section 123 would become uneven. be. On the other hand, according to the rectifying section 123 according to the embodiment, since it is provided with the linear portions 123a arranged radially and the annular portions 123b arranged concentrically, the opening area of each mesh can be reduced as much as possible. can be made uniform. Therefore, it is possible to prevent the washing water flowing out of the rectifying section 123 from becoming non-uniform. In this specification, the term “lattice” is one form of the above-mentioned “mesh shape”, and a plurality of straight lines are arranged so as to intersect each other at right angles, so that square fine openings are densely formed. It refers to the shape that has been made.

Moreover, the plurality of annular portions 123b of the straightening portion 123 are arranged unevenly in the longitudinal direction of the linear portions 123a so that the opening areas of the individual meshes are uniform. Specifically, the plurality of circular ring portions 123b are closer to the radial direction outer side (the second 2 near the flat surface 127). By arranging the annular portions 123b so that the opening areas of the individual meshes are uniform in this manner, the flow of the washing water flowing out from the straightening portion 123 can be made more uniform.

Further, as shown in FIGS. 6 to 8, in the rectifying section 123 according to the embodiment, the annular portion 123b protrudes further downstream than the plurality of linear portions 123a. This point will be specifically described with reference to FIGS. 9 and 10. FIG. 9A and 9B are diagrams for explaining the flow of washing water in the straightening section in which the annular portion protrudes upstream from the straight portion, and FIG. It is a figure for explaining the flow of washing water when protruded.

When the ring portion 123Xb protrudes upstream from the straight portion 123Xa like the rectifying portion 123X shown in FIG. be. For this reason, the washing water flowing out from the rectifying portion 123X tends to be shower-like, and tends to generate noise, water splashes, and the like.

On the other hand, as shown in FIG. 10, in the straightening section 123 according to the embodiment, since the circular ring section 123b protrudes downstream from the straight section 123a, the wash water flowing downstream from the straight section 123a The flows can be joined by the annular portion 123b. Therefore, according to the rectifying section 123 according to the embodiment, since the washing water flowing out from the rectifying section 123 is less likely to be showered, it is possible to suppress noise, water splashing, etc. compared to the rectifying section 123X.

Further, as shown in FIG. 6, the length of projection of the annular portion 123b toward the downstream side is shorter than that of the first water discharge channel portion 124 and the second water discharge channel portion 125, which will be described later. If the protruding length of the annular portion 123b is approximately the same as that of the first water discharge channel portion 124 or the second water discharge channel portion 125, or is longer than that of the first water discharge channel portion 124 or the second water discharge channel portion 125 If it is long, the wash water flowing out from the rectifying section 123 tends to be showered. Therefore, like the rectifying section 123 according to the embodiment, by making the projecting length of the annular portion 123b toward the downstream side shorter than that of the first water discharge channel portion 124 and the second water discharging channel portion 125, the rectifying section It is possible to suppress the washing water flowing out from 123 from becoming shower-like.

<Structures of first water discharge channel portion and second water discharge channel portion>
As shown in FIGS. 6 and 8 , the first water discharge channel portion 124 communicates with the central opening 122 on the downstream side of the central opening 122 and extends in the same direction as the water discharge body portion 101 extends. The first water discharge channel portion 124 is formed by a cylindrical first cylindrical portion 124a in which at least part of a first flat surface 126 including the outer edge of the first water discharge channel portion 124 extends downstream.

The second water discharge flow path portion 125 communicates with the straightening portion 123 on the downstream side of the straightening portion 123 and extends in the same direction as the water discharging body portion 101 extends. The second water discharge channel portion 125 is formed by a cylindrical second cylindrical portion 125a in which at least part of a second flat surface 127 including the outer edge of the straightening portion 123 extends downstream, and a first cylindrical portion 124a. It is formed.

Thus, in the water discharge port portion 74 according to the embodiment, by providing the first water discharge channel portion 124 on the downstream side of the central opening 122 and providing the second water discharge channel portion 125 on the downstream side of the straightening portion 123, The flow path of the washing water flowing out from the central opening 122 and the flow path of the washing water flowing out from the straightening section 123 are separated.

By separating the flow path of the washing water flowing out from the central opening 122 and the flow path of the washing water flowing out from the straightening section 123, the washing water flowing out from the central opening 122 and the washing water flowing out from the straightening section 123 interfere with each other. difficult to do. Therefore, even if there is a difference between the flow velocity of the cleansing water flowing out from the central opening 122 and the flow velocity of the cleansing water flowing out from the rectifying section 123, one cleansing water is less likely to be attracted to the other cleansing water. Straight water can be discharged without thinning or spreading the water discharged from the water port 74 . Since the cleansing water is discharged straight, noise and water splashing are suppressed when the cleansing water lands in the tank body 5, compared to the case where the cleansing water becomes thin or diffuses. be able to.

Therefore, according to the spout portion 74 according to the embodiment, it is possible to suppress deterioration of the rectifying function of the diffusing portion 121 and the rectifying portion 123 while providing the central opening 122 for anti-freezing. Also, when the wash water diffuses, it may flow into the overflow pipe 81 (see FIG. 4) disposed near the water discharge port 74 and become wasted water. Therefore, it is also possible to suppress the generation of such wasted water.

Further, in the water discharge port portion 74 according to the embodiment, the diffusion portion 121, the central opening 122, the rectifying portion 123, the first water discharge channel portion 124, and the second water discharge channel portion 125 are integrally formed with the cap 102. I decided to Therefore, the number of parts can be reduced and the size can be reduced as compared with the conventional water discharging device in which the diffusing member, the two rectifying nets and the cap are formed by separate members.

<Modification>
By the way, the spout portion 74 has a difference in surface roughness between the spouting body portion 101 and the cap 102 in order to prevent the cap 102 from rotating and coming off the spouting body portion 101 due to impact, vibration, or the like. may be provided.

For example, as shown in FIG. 6 , the water discharge main body 101 and the cap 102 are in contact with each other at the tip surface of the water discharge main body 101 and the second flat surface 127 of the cap 102 . Therefore, in the spout portion 74 , for example, the coefficient of friction of the second flat surface 127 may be higher than the coefficient of friction of the tip surface of the spout main body portion 101 . For example, the surface of the second flat surface 127 may be roughened by providing fine unevenness on the surface, or the second flat surface 127 may be coated with a member having a higher coefficient of friction than the tip surface of the water discharge body 101. It is realized by Further, the water discharge port portion 74 may have a friction coefficient higher than that of the second flat surface 127 at the tip surface of the water discharge body portion 101 .

This makes it difficult for the cap 102 to rotate, so that it is possible to prevent the cap 102 from coming off the water discharge main body 101 . Note that this configuration is particularly effective when the rectifying portion 123 is formed integrally with the cap 102 and both the water discharging body portion 101 and the cap 102 are made of resin.

<Other Modifications>
In the above-described embodiment, the case where the front end surface of the first water discharge channel portion 124 and the front end surface of the second water discharge channel portion 125 are formed flush with each other has been described. Without being limited to this, either one of the front end surface of the first water discharge channel portion 124 and the front end surface of the second water discharge channel portion 125 may protrude from the other. Also, in this case, the protruding length of the annular portion 123b may be longer than one of the first water discharge channel portion 124 and the second water discharge channel portion 125 .

In the embodiment described above, an example in which diffusion portion 121, central opening 122, straightening portion 123, first water discharge channel portion 124, and second water discharge channel portion 125 are formed integrally with cap 102 has been described. Not limited to this, the diffusion portion 121, the central opening 122, the straightening portion 123, the first water discharge channel portion 124, and the second water discharge channel portion 125 may each be configured by separate members.

In the above-described embodiment, the water supply device 7 included in the flushing water tank device 4 has been described as an example of the water discharger.

As described above, the water discharging device (as an example, the water supply device 7) according to the embodiment includes the water supply channel portion (as an example, the secondary side water supply channel portion 72), the water discharging body portion 101, and the diffusion portion 121. , a central opening 122 , a mesh-like straightening portion 123 , a first water discharge channel portion 124 , and a second water discharge channel portion 125 . The water discharge main body 101 branches from the water supply channel. The diffusing portion 121 diffuses the water that has flowed into the water discharge body portion 101 from the water supply channel portion. The central opening 122 is provided downstream of the diffusion portion 121 . The rectifying section 123 is provided around the central opening 122 . The first water discharge channel portion 124 communicates with the central opening 122 on the downstream side of the central opening 122 and extends in one direction. The second water discharge flow path portion 125 communicates with the straightening portion 123 on the downstream side of the straightening portion 123 and extends in one direction.

As a result, it is possible to suppress deterioration of the rectifying function of the diffusing portion 121 and the rectifying portion 123 while providing the central opening 122 for anti-freezing.

In addition, the inner peripheral surface of the water discharge main body 101 and the central opening 122 are circular in bottom view. Further, the rectifying portion 123 includes a plurality of linear portions 123a arranged radially around the central opening 122 and at least one annular portion 123b arranged concentrically with the central opening 122. As shown in FIG.

As a result, the opening area of each mesh can be made uniform as much as possible, so that the flow of washing water flowing out from the rectifying section 123 can be made uniform compared to the case where the mesh is formed in a grid pattern. .

Also, the annular portion 123b protrudes downstream from the plurality of linear portions 123a. Thereby, the flow of washing water flowing on the downstream side of the linear portion 123a can be joined by the annular portion 123b. Therefore, the washing water flowing out from the rectifying section 123 is less likely to be showered, and noise, water splashing, etc. can be suppressed, so that the rectifying function can be enhanced.

Also, the projection length of the annular portion 123 b is shorter than at least one of the first water discharge channel portion 124 and the second water discharge channel portion 125 . If the projecting length of the annular portion 123b is too long, the rectifying function of the rectifying portion 123 may deteriorate. Therefore, by preventing the projecting length of the annular portion 123b from being excessively long, it is possible to suppress deterioration of the rectifying function.

Further, the water discharging device according to the embodiment includes a cap 102 covering the water discharging body portion 101. The cap 102 includes a diffusion portion 121, a central opening 122, a straightening portion 123, a first water discharging flow path portion 124 and a second water discharging flow path portion 124. A water channel portion 125 is integrally formed. Thereby, the water discharging device can be miniaturized.

Also, the cap 102 has a flat surface between the central opening 122 and the rectifying section 123 . The diffusing portion 121 includes an umbrella member 121a protruding toward the upstream side, and a flat surface (for example, a first flat surface 126) provided with a base end portion, and a plurality of end portions supporting the umbrella member 121a. and a strut member 121b.

The wash water that has flowed into the water discharge main body 101 from the water supply flow path is diffused by the diffusion part 121 so that it can uniformly flow downstream in the water discharge main body 101 without unevenness.

In addition, the diffuser opening 121c and the central opening 122 formed by the umbrella member and two adjacent strut members 121b among the plurality of strut members 121b and the flat surface (as an example, the first flat surface 126) are frozen. It has an opening area that satisfies the prevention condition.

Since not only the central opening 122 but also the diffusing portion opening 121c has an opening area that satisfies freezing prevention, it is possible to more reliably suppress the occurrence of water discharge failure due to freezing.

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

1 flush toilet bowl 2 toilet body 3 exterior cover 4 flush water tank device 5 tank body 6 lid 7 water supply device 71 primary side water supply channel portion 72 secondary side water supply channel portion 73 intermediate channel portion 74 spout portion 101 spout main body Part 111 Screw groove 102 Cap 121 Diffusion part 122 Central opening 123 Straightening part 124 First water discharge channel part 125 Second water discharge channel part 126 First flat surface 127 Second flat surface 8 Drainage device 81 Overflow pipe 82 Drain valve 83 Guide 9 Rotating device 91 Driving part 92 Shaft part 93 Connecting member

Claims (6)

a water supply channel;
a water discharge body section branched from the water supply flow path section;
a diffusing portion for diffusing water flowing from the water supply flow path portion to the water discharge body portion;
a central opening provided downstream of the diffusion section;
a mesh-like straightening section provided around the central opening;
a first water discharge channel portion communicating with the central opening on the downstream side of the central opening and extending in one direction;
A water discharging device comprising: a second water discharge flow path portion that communicates with the straightening section downstream of the straightening section and extends in the one direction. The inner peripheral surface of the water discharge body and the central opening are circular in bottom view,
The rectifying section is
a plurality of linear portions radially arranged around the central opening;
and at least one annular portion arranged concentrically with the central opening. The annular portion is
The water discharger according to claim 2, which protrudes downstream from the plurality of linear portions. The projection length of the annular portion is
The water discharging device according to claim 3, wherein the length is shorter than at least one of the first water discharging channel portion and the second water discharging channel portion. A cap covering the water discharge body is provided,
The cap according to any one of claims 1 to 4, wherein the diffusion portion, the central opening, the straightening portion, the first water discharge channel portion, and the second water discharge channel portion are integrally formed in the cap. Water discharge device as described. The cap is
having a flat surface between the central opening and the rectifying section;
The diffusion part is
an umbrella member protruding toward the upstream side;
The water discharging device according to claim 5, further comprising: a plurality of strut members each provided with a base end portion on the flat surface and supporting the umbrella member at a tip end portion thereof.

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