JP2023110458A - Flush toilet bowl - Google Patents

Abstract

To provide a flush toilet bowl capable of improving hand-washing property and suppressing splashing of washing water outside a hand-washing bowl when a user washes his/her hands.SOLUTION: The present invention relates to a flush toilet bowl 1 comprising a washing water tank device with a hand-washing bowl which comprises: a toilet bowl body 2; a washing water tank device 4; and a hand-washing bowl 6 comprising a water discharge member 60 and a hand-washing basin 62, wherein the hand-washing bowl 62 comprises: a drain port part 64 for draining washing water discharged from the water discharge member 60 into the washing water tank device 4; a front wall part 66 extending upward on the front side of the drain port part 64; and a rear wall part 68 extending to a position higher than an upper end of the front wall part 66 on a rear side of the drain port part 64, a water discharge member 60 is provided in an inner space S of the hand-washing bowl 62, and is attached to a surface of the rear wall part 68 so that a water discharge port 70a is positioned below an upper end of the rear wall part 68, and mist-like washing water is discharged forward and downward from the water discharge port 70a.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to a flush toilet, and more particularly to a flush toilet provided with a flush water tank device with a hand basin.

2. Description of the Related Art Conventionally, there has been known a flush toilet in which a wash basin is provided above a flush water tank (for example, Patent Document 1). In the flush toilet of Patent Document 1, when a user performs an operation to start flushing, part of the flushing water supplied from the water supply source to the flushing water tank is spouted from the flushing pipe of the washbasin, allowing the user to wash their hands. It is washable. Further, in the flush toilet bowl of Patent Document 1, the front wall portion of the hand-washing bowl is formed so as to be lower than the rear wall portion so that the hand can be easily put into the inner space of the hand-washing bowl. It is attached to the upper rear wall. This water discharge pipe is formed so as to discharge cleansing water in a straight shape (bundle shape) downward from the water discharge port.

In general, when washing hands with straight cleansing water, the user needs to wash their hands while rubbing them together so that the cleansing water spreads over their entire hands. For this reason, in the flush toilet bowl of Patent Document 1, there is a possibility that washing water may splash out of the basin due to rubbing of hands. In particular, when the front wall portion of the hand-washing bowl is formed to be lower than the rear wall portion, there is a large possibility that washing water will splash out of the hand-washing bowl.

On the other hand, there are known flush toilets for washing hands with mist-like (foggy) wash water in order to prevent the wash water from splashing out of the bowl (for example, Patent Document 2 and Patent Document 2). 3). Since the mist-like cleansing water is sprayed over a wide range so that the cleansing water spreads over the entire hands, the user does not have to rub the hands together. The flush toilet of Patent Document 2 includes a hand washing bowl formed on a flush water tank, a hand washing device main body provided so as to overhang from above the hand washing bowl, and a mist discharge provided on the hand washing device main body. and a mist discharger arranged outside the inner space of the hand washing bowl to discharge washing water in the form of mist.

In addition, the flush toilet of Patent Document 3 includes a case body provided on the toilet body, a handwashing bowl formed above the case body, and a handwashing bowl provided below the front wall portion of the handwashing bowl. and a nozzle arranged in the inner space of the bowl, and mist-like cleansing water is spouted from the nozzle toward the rear wall portion of the hand-washing bowl.

Japanese Patent Application Laid-Open No. 2017-25500 JP 2002-161564 A JP-A-10-237910

However, in the flush toilet of Patent Document 2, since water is discharged from a high position outside the inner space of the hand basin toward a wide range, there is a possibility that the wash water may splash outside the hand basin when the user washes his/her hands. is still there.

In addition, in the flush toilet bowl of Patent Document 3, a nozzle is provided below the front wall portion of the hand basin, and wash water is spouted from the nozzle toward the rear and downward of the hand basin. The possibility of splashing outside is reduced. However, when washing the hands, it is necessary to put the hands deep into the inner space of the washing basin, and there is a problem that the hand-washing performance is deteriorated.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a flush toilet bowl that can improve hand-washability and prevent washing water from splashing out of the hand-washing bowl when a user washes his/her hands.

In order to solve the above-described problems, the present invention provides a flush toilet equipped with a flush water tank device with a hand basin, comprising: a toilet bowl body; A wash water tank device for storing water, a water discharge member for discharging wash water supplied from a water supply source through a water discharge port, and a hand-washing bowl recessed downward to receive the wash water discharged from the water discharge member. a hand washing device provided on the washing water tank device, the hand washing bowl having a drain port for discharging the washing water discharged from the water discharge member into the washing water tank device; and a rear wall portion extending to a position higher than the upper end of the front wall portion on the rear side of the drain port, and the water discharge member is provided in the inner space of the hand basin. In addition, the spout is attached to the surface of the rear wall so as to be positioned below the upper end of the rear wall, and mist-like cleansing water is spouted forward and downward from the spout. It is a flush toilet bowl.

In the present invention configured as described above, the water discharge member is provided in the inner space of the basin, and the water discharge port is attached to the surface of the rear wall portion so as to be positioned below the upper end of the rear wall portion. Therefore, it is possible to prevent washing water from splashing out of the washing basin. In addition, since the front wall portion of the hand-washing bowl is lower than the rear wall portion, and mist-like washing water is discharged forward and downward from the spout of the water discharge member attached to the rear wall portion, the front wall portion is Hands can be easily put into the inner space of the hand-washing basin, and hand-washing performance can be improved. Therefore, it is possible to improve hand-washability and to prevent washing water from splashing out of the hand-washing bowl when the user washes his/her hands.

In the present invention, preferably, the water discharging member is provided on the rear wall so that at least part of it is positioned higher than the upper end of the lowest region of the front wall.

According to the present invention configured as described above, it is possible to wash the hands in a shallow position in the inner space of the hand-washing bowl while suppressing the washing water from splashing out of the hand-washing bowl, thereby improving the hand-washing performance. can.

In the present invention, preferably, the water discharge member is provided on the rear wall so that the water discharge port is positioned higher than the upper end of the lowest region of the front wall.

According to the present invention configured in this way, the hands can be washed at a shallower position in the inner space of the hand-washing bowl, and hand-washing performance can be further improved.

In the present invention, preferably, the water discharge member has a water passage for guiding wash water toward the spout, and the water passage has a downwardly inclined portion that slopes downward toward the front. In the directional midsection, the axis of the downward slope slopes downward from an imaginary straight line connecting the upper ends of the rear wall and the upper ends of the front walls.

According to the present invention configured in this manner, even if the mist-like cleansing water is diffused from the spout, it is possible to prevent the cleansing water from splashing outside the hand-washing bowl when washing the hands.

In the present invention, preferably, the water discharge member has a water passage for guiding flush water toward the spout, and the water passage is provided on the downstream side of the water passage and directed from the upstream side to the spout. It has an enlarged diameter portion that expands in diameter.

According to the present invention configured as described above, it is possible to spout washing water in the form of mist that is diffused by the enlarged diameter portion, and it is possible to widen the range in which hand washing is possible in the inner space of the hand basin, thereby improving hand washing performance. can be improved.

In the present invention, preferably, the enlarged diameter portion of the water discharge member is formed so that, of the cleansing water spouted in mist from the spout, the cleansing water that spreads most upward collides with the front wall portion. there is

According to the present invention configured as described above, even when mist-like cleansing water that is diffused by the enlarged diameter portion is spouted, the spouted cleansing water that spreads most upward collides with the front wall. Therefore, it is possible to prevent the washing water from splashing out of the washing bowl.

Further, in the present invention, preferably, the enlarged diameter portion of the water discharge member is formed so that, of the cleansing water discharged in mist form from the water discharge port, the cleansing water spreads most downwardly and collides with the rear wall portion. It is

According to the present invention configured as described above, the sprayed wash water that spreads most downward collides with the rear wall portion, so that the range in which hand washing can be performed in the inner space of the hand washing bowl can be widened, and hand washing is easy. can be improved.

Further, in the present invention, preferably, the water discharge member has a water conduit for guiding flush water toward the water discharge port, and the water conduit has a downwardly inclined portion that slopes downward toward the front. An imaginary straight line extending from the spout toward the inner space of the basin intersects the basin behind the front end of the drain port.

According to the present invention configured in this way, it is possible to further suppress the washing water from splashing out of the hand-washing bowl when washing the hands.

In the present invention, preferably, the cleaning water tank device includes a water supply device that supplies cleaning water from a water supply source into the cleaning water tank device, and the water supply device comprises cleaning water flowing from the water supply source into the cleaning water tank device. has a branch pipe for leading a part of the water discharge member of the wash basin.

According to the present invention configured as described above, it is possible to wash hands using part of the wash water supplied into the wash water tank device by the water supply device. In this case, since mist-like cleansing water is spouted from the water-spouting member, a sufficient hand-washing feeling can be obtained with a small amount of cleansing water.

According to the present invention, the water discharge member is provided in the inner space of the basin, and the water discharge port is attached to the surface of the rear wall portion so as to be positioned below the upper end of the rear wall portion. can be suppressed from scattering outside the hand washing bowl. In addition, since the front wall portion of the hand-washing bowl is lower than the rear wall portion, and mist-like washing water is discharged forward and downward from the spout of the water discharge member attached to the rear wall portion, the front wall portion is Hands can be easily put into the inner space of the hand-washing basin, and hand-washing performance can be improved. Therefore, it is possible to improve hand-washability and to prevent washing water from splashing out of the hand-washing bowl when the user washes his/her hands.

1 is a perspective view of a flush toilet equipped with a flush water tank device with a hand basin according to one embodiment of the present invention; FIG. 1 is a plan view of a flush toilet provided with a flush water tank device with a hand basin according to one embodiment of the present invention; FIG. FIG. 3 is a front cross-sectional view taken along line II of FIG. 2; FIG. 3 is a side sectional view taken along line II-II of FIG. 2; FIG. 5 is an enlarged cross-sectional view enlarging a C region of FIG. 4; FIG. 4 is a schematic diagram schematically showing how cleansing water flows inside the water discharging member according to the embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A flush toilet provided with a flush water tank device with a hand basin according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a flush toilet equipped with a flush water tank device with a hand basin according to this embodiment, and FIG. 2 is a plan view of a flush toilet equipped with a flush water tank device with a hand basin according to this embodiment. 3 is a front sectional view taken along line II of FIG. 2, FIG. 4 is a side sectional view taken along line II-II of FIG. 5 is an enlarged sectional view enlarging the C area of FIG.

Referring to FIG. 1, a flush toilet 1 according to the present embodiment comprises a toilet body 2 for discharging filth and the like, and a toilet body 2 provided behind the toilet body 2 and supplied from a water supply source (not shown). A washing water tank device 4 for storing washing water and a washing machine 6 provided on the washing water tank device 4 are provided.

Referring to FIG. 2, the toilet bowl body 2 is made of ceramics, and includes a bowl portion 8 for receiving waste and the like, an overhang-shaped rim portion 10 formed on the upper edge of the bowl portion 8, and the rim portion 10. A rim spout 12 for spouting cleansing water along the inner peripheral surface of the bowl portion 8 and a drain trap pipe 14 communicating with the lower portion of the bowl portion 8 to discharge dirt and the like are formed.

3 and 4, the washing water tank device 4 includes an exterior tank 16, an interior tank 18 for storing washing water, and a water supply for supplying washing water from a water supply source such as a water pipe into the interior tank 18. A device 20, a drain valve device 24 for opening and closing a tank drain port 22 formed at the bottom of the internal tank 18, and an operating device 26 for operating the drain valve device 24 are provided.

The exterior tank 16 is made of ceramics and formed in a substantially rectangular parallelepiped shape elongated in the vertical direction. The outer tank 16 has a width in the left-right direction substantially equal to that of the toilet body 2 and a width in the front-rear direction about a quarter of the width of the toilet body 2 . The exterior tank 16 is formed to have substantially the same length in the vertical direction as the toilet body 2, and when the exterior tank 16 is attached to the toilet body 2, the height of the upper end of the exterior tank 16 is the height of the toilet body. 2 is about twice the height of the upper end. The exterior tank 16 is attached to the rear side upper surface of the toilet body 2 with a fixing member 28 .

The interior tank 18 is made of resin, and is formed of a flat, substantially rectangular parallelepiped elongated in the left-right direction. The inner tank 18 has a width slightly smaller than that of the outer tank 16 in the left-right direction and the front-rear direction, and a vertical length about half that of the outer tank 16 . The width of the internal tank 18 in the lateral direction and the longitudinal direction may be larger than that of the external tank 16, and the length in the vertical direction may be larger than half the length of the external tank 16. may be formed. A tank drain port 22 is formed near the center of the bottom of the interior tank 18 for draining the stored flush water to the toilet body 2 . The inner tank 18 is housed inside the outer tank 16 and attached to the bottom of the outer tank 16 .

The water supply device 20 includes a water supply pipe 30 for guiding washing water from a water supply source into the internal tank 18, a diaphragm-type water supply valve 32 for discharging and stopping the washing water into the internal tank 18, A water supply float 34 that moves vertically in conjunction with water level fluctuations to open and close the water supply valve 32, a water discharge pipe 36 for guiding the wash water that has passed through the water supply valve 32 into the internal tank 18, and a water discharge pipe 36. and a branch pipe 38 for guiding part of the washing water branched and flowing through the water discharge pipe 36 to the wash basin 6. - 特許庁

The water supply pipe 30 is a pipe made of resin, and is connected to a water supply source on the upstream side and fixed inside the internal tank 18 on the downstream side. The water discharge pipe 36 is a pipe made of resin, and is connected to the water supply pipe 30 via the water supply valve 32 on the upstream side, and forms a tank water discharge port 40 on the downstream side. It is The branch pipe 38 is formed of a flexible resin pipe so as to reduce the occupied area in the exterior tank 16 and to enlarge the inner space S of the hand washing basin 62. . The branch pipe 38 is connected near the middle of the water discharge pipe 36 on the upstream side and connected to the water discharge member 60 of the wash basin 6 on the downstream side. The branch pipe 38 is branched from the water discharge pipe 36 so as to supply approximately 1500 cc of water to the wash basin 6 for one flush. Most of the washing water supplied from the water supply pipe 30 flows through the water discharge pipe 36 and is supplied from the tank water discharge port 40 to the internal tank 18 , and part of it flows through the branch pipe 38 and is supplied to the wash basin 6 .

The drain valve device 24 includes a valve body 42 for opening and closing the tank drain port 22, an overflow pipe 44 extending upward from the valve body 42, and a control cylinder 46 for controlling the vertical movement of the valve body 42 and the overflow pipe 44. and have. The control cylinder 46 has a water reservoir 48 formed with a small hole for storing wash water and draining the stored wash water at a predetermined small flow rate, and a water reservoir 48 provided in the water reservoir, which is interlocked with fluctuations in the water level in the water reservoir. and a drainage float 50 that moves vertically and opens and closes the valve body 42 .

The operation device 26 includes an operation lever 52 arranged outside the exterior tank 16, a rotation shaft 54 extending in the lateral direction inside the exterior tank 16 and rotating in conjunction with the rotation of the operation lever 52, and a rotation shaft 54 at one end. and the other end is attached to the drain valve device 24 , and the connecting member 56 moves the valve body 42 upward by the rotation of the rotating shaft 54 .

1 to 4, wash basin 6 includes a water discharge member 60 that discharges cleansing water supplied from a water supply source through a water discharge port 70a, and a washing bowl 62 that receives the wash water discharged from water discharge member 60. , is equipped with

The hand-washing basin 62 includes a drain port portion 64 for draining wash water discharged from the water discharge member 60 into the interior tank 18, a front wall portion 66 arranged on the front side of the drain port portion 64, and the drain port portion 64. and a rear wall portion 68 arranged on the rear side. Specifically, in a plan view (FIG. 2), the front wall portion 66 is on the front side of the center line CL extending in the left-right direction from the line at the center of the drain port portion 64 in the front-rear direction, and the rear wall portion is on the rear side of the center line CL. is 68.

The hand-washing bowl 62 is made of ceramics, has an inner surface recessed downward, and forms an inner space S large enough for a user to put his or her hand into. In plan view (FIG. 2), the inner edge of the hand washing bowl 62 is formed in an elliptical shape elongated in the left-right direction, and the outer edge of the hand washing bowl 62 is formed in substantially the same shape and size as the outer tank 16. there is The hand-washing bowl 62 is formed so that the entire inner surface of the hand-washing bowl 62 can be visually recognized when viewed from directly above, and there is no blind spot. The hand-washing bowl 62 is formed so that the height from the lower end of the exterior tank 16 to the upper end of the hand-washing bowl 62 is about 500 mm in a state of being attached to the exterior tank 16.例文帳に追加

Referring to FIG. 2, the drain port portion 64 is arranged near the center of the hand basin 62 in a plan view and forms a drain port 64a which is a circular hole with an inner diameter of about 20 mm. Referring to FIGS. 3 and 4, the drain port 64 has substantially the same cross-sectional shape and extends downward for a predetermined length from the lower end of the hand wash basin 62 to drain wash water from the hand wash basin 62 into the interior tank 18. designed to guide.

Referring to FIGS. 3 and 4, the front wall portion 66 is formed at a lower height than the rear wall portion 68 so that the user can easily put his or her hand into the inner space S of the wash bowl 62 from the front. ing. The front wall portion 66 has an upper end curved in a concave shape when viewed from the front (FIG. 3). It is formed so that it becomes higher gradually toward the direction. Further, the front wall portion 66 extends forward and upward in a side sectional view (FIG. 4). Referring to FIG. 5, an upper surface 66b of the upper end of the front wall portion 66 is formed so as to be inclined downward from the rear to the front to prevent dust and the like from accumulating.

3 and 4, the rear wall portion 68 extends to a position higher than the upper end of the front wall portion 66 in order to prevent washing water from splashing to the rear of the hand basin 62. As shown in FIG. When viewed from the front (FIG. 3), the rear wall portion 68 has an upper end that is curved in a convex shape. It is formed so that it gradually becomes lower toward the right direction. The rear wall portion 68 extends rearward and upward in a side sectional view (FIG. 4). Referring to FIG. 5, the rear wall portion 68 is formed such that the height of the upper end of the rear end is approximately twice or more higher than the height of the upper end of the front end of the front wall portion 66 ( See Figure 4). Referring to FIG. 5, the top surface 68b of the upper end of the rear wall portion 68 is formed so as to be inclined downward from the rear to the front, so that water droplets, dust, etc. fall into the basin.

Referring to FIG. 3, the rear wall portion 68 has a notch portion 68c for attaching the water discharging member 60 to the rear wall portion 68. As shown in FIG. The cutout portion 68c is formed in a rectangular shape when viewed from the front, and is open at the top. The rear wall portion 68 near the periphery of the notch portion 68c is formed of a substantially linear flat plane in the vertical direction so that the water discharging member 60 can be easily attached. In the present embodiment, the rear wall portion 68 near the periphery of the notch portion 68c is a flat plane, but the entire upper region of the rear wall portion 68 may be formed into a flat plane substantially straight in the vertical direction. .

Referring to FIG. 5, the water discharge member 60 includes a spreader 70 that forms mist-like cleansing water and discharges the water from a water discharge port 70a to the hand basin 62, and a notch portion of a rear wall portion 68 to which the spreader 70 is fixed. A support plate 72 fitted to 68c and a fixing member 74 for fixing the spreader 70 to the support plate 72 are provided. In this embodiment, the mist-like washing water is microbubbles with a diameter of about 0.1 mm.

The spreader 70 is internally formed with a water passage 70b for guiding wash water toward the water spout 70a. The water passage 70b is connected to the branch pipe 38 of the water supply device 20, and includes a connection base portion 70c that extends forward in the horizontal direction, a downward slope portion 70d that slopes forward and downward from the connection base portion 70c, and a and an enlarged diameter portion 70e that smoothly expands in diameter from the inclined portion 70d toward the spout 70a (see FIG. 5).

Referring to FIG. 3, the support plate 72 is formed in substantially the same shape and size as the notch portion 68c, and is formed in a substantially linear flat plane. Referring to FIG. 5, support plate 72 has an insertion hole 72a for attaching spreader 70 near the center thereof. Referring to FIGS. 3 and 5, the support plate 72 near the periphery of the insertion hole 72a to which the spreader 70 is attached is formed of a straight flat plane so that the spreader 70 and the fixing member 74 can be easily attached. there is

The fixing member 74 includes a joint 74a to which the spreader 70 is attached and which is inserted into the insertion hole 72a of the support plate 72, and a nut 74b which fixes the spreader 70 and the joint 74a to the support plate 72 by fitting the joint 74a. , (see FIG. 5). The joint 74a is formed in a hollow cylindrical shape so that the branch pipe 38 passes through the inside thereof, and is formed with a male screw portion 74c that fits with the nut 74b and a mounting portion 74d to which the spreader 70 is mounted on the outer surface. (See Figure 5). The nut 74b is formed in a ring shape and has a female threaded portion 74e formed on its inner surface to be screwed with the male threaded portion 74c of the joint 74a (see FIG. 5).

In this embodiment, the notch 68c and the support plate 72 for attaching the water discharging member 60 to the rear wall 68 are provided. The spreader 70 and the fixing member 74 may be directly attached to the insertion hole and fixed with a nut. In this case, even if the size of the insertion hole differs due to a manufacturing error in the pottery, the fixing member can be fastened to the pottery by the nut, and the occurrence of variations in the mounting state due to the manufacturing error can be suppressed.

Next, with reference to FIG. 5, a specific structure of the washbasin according to this embodiment will be described.

The spreader 70 of the water discharge member 60 is substantially entirely provided within the inner space S of the wash basin 62, and the water discharge port 70a of the spreader 70 is arranged within the inner space S of the wash basin 62. - 特許庁The spreader 70 is attached to the rear wall portion 68 so that the spout 70a is positioned below the upper end of the rear wall portion 68, and mist-like cleansing water is spouted forward and downward from the spout 70a. is configured as follows.

Referring to FIG. 3 , spreader 70 of water discharging member 60 is arranged so that its entirety is positioned higher than the upper end of lowest central region 66 a of front wall portion 66 . Also, the water discharge port 70 a of the water discharge member 60 is located at a position higher than the upper end of the lowest central region 66 a of the front wall portion 66 .

Referring to FIG. 5, a water passage 70b of the spreader 70 is formed with a downwardly inclined portion 70d that linearly inclines downward toward the front. In the spreader 70, the axis of the downward inclined portion 70d of the water passage 70b is inclined downward from the imaginary straight line C1 connecting the upper end of the rear wall portion 68 and the upper end of the front wall portion 66 in the central cross section in the left-right direction. is formed as Specifically, the spreader 70 is formed such that the axis of the downward inclined portion 70d of the water passage 70b is inclined downward by approximately 30 degrees with respect to the imaginary straight line C1.

Referring to FIG. 5, an enlarged diameter portion 70e that spreads like a trumpet from the upstream toward the water discharge port 70a is formed at the downstream end of the downward inclined portion 70d of the water passage 70b. Specifically, the enlarged diameter portion 70 e expands most upward of the cleansing water spouted in the mist form from the spouting port 70 a so that the flow F 1 of the spouted cleansing water collides with the surface of the front wall portion 66 . formed. Further, the enlarged diameter portion 70e is formed so that the flow F2 of washing water, which is sprayed in a mist form from the spouting port 70a and spreads most downward, collides with the surface of the rear wall portion 68. ing.

Referring to FIG. 5, enlarged diameter portion 70e is formed such that the upper end is curved upward with a predetermined curvature radius and the lower end is curved downward with a predetermined curvature radius in the central cross section in the left-right direction. The enlarged diameter portion 70 e is formed such that a tangent line C<b>2 at the center point 70 f in the front-rear direction of the upper end of the enlarged diameter portion 70 e intersects the surface of the front wall portion 66 . The enlarged diameter portion 70 e is formed such that a tangent line C<b>3 at the front-rear center point 70 g of the lower end of the enlarged diameter portion 70 e intersects the surface of the rear wall portion 68 . As a result, it is possible to further improve hand-washing performance while suppressing splashing of wash water outside the hand-washing bowl 62. - 特許庁In the present embodiment, the upper end and lower end of the enlarged diameter portion 70e are curved with a predetermined radius of curvature. may

Referring to FIG. 5, the downward inclined portion 70d of the spreader 70 has an imaginary straight line C4 extending from the water discharge port 70a toward the inner space S of the basin 62, and the front end of the drain port portion 64 extends. It is formed so as to intersect with the surface of the hand washing bowl 62 on the rearward side.

Next, the flow of cleansing water in the water discharging member according to this embodiment will be described. FIG. 6 is a schematic diagram schematically showing how cleansing water flows inside the water discharging member according to the present embodiment.
As shown in FIG. 6, the wash water supplied from the water supply source passes through the connecting base portion 70c of the spreader 70, then flows into the downward inclined portion 70d and is led forward and downward (f1). After that, the washing water is spread radially from the inside to the outside, and all the washing water flows radially outside (f2). After that, part of the washing water flows radially from the outside to the inside, flows axially near the center of the cross section of the water passage, and flows into the mixing chamber 70h (f3). On the other hand, the rest of the wash water flows radially outward, flows radially from the outside to the inside, and flows into the mixing chamber 70h (f4). In the mixing chamber 70h, the axial flow (f3) and the radial flow (f4) collide and mix to generate mist-like washing water. The mist-like cleansing water generated in the mixing chamber 70h passes through the diameter-reduced portion 70i located downstream of the mixing chamber 70h, then passes through the diameter-enlarged portion 70e and is discharged from the water discharge port 70a.

Next, the effects of the flush toilet provided with the flush water tank device with a hand basin according to the above-described embodiment will be described.

According to the flush toilet bowl 1 of the present embodiment, the water discharge member 60 is provided in the inner space S of the hand washing bowl 62, and the water discharge port 70a is located below the upper end of the rear wall portion 68. Since it is attached to the surface of 68, it is possible to suppress splashing of wash water outside the hand washing basin 62. - 特許庁A front wall portion 66 of the hand-washing basin 62 is lower than a rear wall portion 68, and a water discharge port 70a of a water discharge member 60 attached to the rear wall portion 68 discharges mist-like cleansing water forward and downward. Therefore, it is easy to put a hand into the inner space S of the washing bowl 62 from the front wall portion 66, and the hand-washing property can be improved. Therefore, it is possible to improve hand-washability and to prevent washing water from splashing out of the hand-washing bowl when the user washes his/her hands.

In addition, since the water discharge member 60 is provided inside the inner space S rather than outside the washing basin 62, the discharged washing water falls from a high position and collides with the washing basin 62 vigorously, causing water splashing. can be suppressed. Also, even if the washing water is directly discharged from the drain port 64 of the hand washing machine 6 into the washing water tank device 4, the washing water that is discharged is mist-like washing water. You can reduce the sound of hitting the surface of the water. Furthermore, since the sprayed water is mist-like cleansing water, it is possible to prevent the water from contacting the surface of the cleansing water stored in the tank and causing a large amount of water splashing. Scattering can be suppressed. In addition, since the mist-like washing water is received by the hand-washing bowl 62, and the mist-like washing water is collected on the hand-washing bowl 62 and then flowed to the drain port part 64, the washing water is made to flow into the washing water tank device 4 at an early stage. be able to. In addition, since the hand-washing bowl is formed in a shape that facilitates putting the hand into the inner space, it is possible to prevent waste of washing water due to the time it takes to put the hand into the inner space.

Further, according to the flush toilet 1 of the present embodiment, preferably, the water discharging member 60 is arranged on the rear wall such that at least a portion thereof is positioned higher than the upper end of the lowest central region 66a of the front wall portion 66. Since it is provided in the part 68, it is possible to wash hands at a shallow position in the inner space S of the hand washing bowl 62 while suppressing splashing of washing water to the outside of the hand washing bowl 62, thereby improving hand-washing performance. can. At least a part of the water discharging member 60 is positioned higher than the upper end of the lowest central region 66a of the front wall portion 66, so that hands can be washed easily even when the toilet lid is raised. .

According to the flush toilet 1 of the present embodiment, the water discharge member 60 is preferably attached to the rear wall portion 68 so that the water discharge port 70a is positioned higher than the upper end of the lowest central region 66a of the front wall portion 66. Since it is provided, the hands can be washed at a shallower position in the inner space S of the washing bowl 62, and hand-washing performance can be further improved. Further, since the spout 70a is positioned higher than the upper end of the lowest region of the front wall portion 66, hands can be washed easily even when the toilet lid is up.

Further, according to the flush toilet 1 of the present embodiment, preferably, the water discharge member 60 has the water passage 70b for guiding flush water toward the water discharge port 70a, and the water passage 70b is directed forward. A downwardly inclined portion 70d is provided, and the axis line of the downwardly inclined portion 70d is an imaginary straight line C1 connecting the upper end of the rear wall portion 68 and the upper end of the front wall portion 66 in the central cross section of the washbasin 62 in the left-right direction. Since it is slanted downward, it is possible to prevent the washing water from splashing out of the washing basin 62 when washing the hands even if mist-like washing water is diffused from the spout 70a.

According to the flush toilet 1 of the present embodiment, the water discharge member 60 preferably has the water passage 70b for guiding flush water toward the spout 70a, and the water passage 70b is located downstream of the water passage 70b. , and is provided with an enlarged diameter part 70e whose diameter is enlarged from the upstream side toward the spout 70a, so that the range where hand washing is possible in the inner space S of the hand washing bowl 62 can be expanded, and the hand washing property is improved. be able to.

Further, according to the flush toilet 1 of the present embodiment, preferably, the enlarged diameter portion 70e of the water discharge member 60 spreads most upward in the mist-like wash water discharged from the water discharge port 70a. Since the water F1 is formed so as to collide with the front wall portion 66, the washing water is scattered outside the washing bowl 62 even when mist-like washing water that is diffused by the enlarged diameter portion 70e is spouted. can be suppressed.

According to the flush toilet bowl 1 of the present embodiment, preferably, the enlarged diameter portion 70e of the water discharge member 60 spreads most downward among the wash water discharged in the mist form from the water discharge port 70a, and the discharged wash water F2 is preferably is formed so as to collide with the rear wall portion 68, it is possible to widen the range in which hand washing is possible in the inner space S of the hand washing bowl 62, and to improve the hand washing property.

Further, according to the flush toilet 1 of the present embodiment, preferably, the water discharge member 60 has the water passage 70b for guiding flush water toward the water discharge port 70a, and the water passage 70b is directed forward. An imaginary straight line C4 formed by extending the axis of the downwardly inclined portion 70d from the spout 70a toward the inner space S of the basin 62 is positioned behind the front end of the drain portion 64 for hand washing. Since it is configured so as to intersect with the bowl 62, the water discharge port 70a is oriented rearward from the drain port part 64, and it is possible to further suppress washing water from splashing out of the hand washing bowl 62 when washing hands. .

According to the flush toilet 1 of the present embodiment, the flush water tank device 4 preferably includes a water supply device 20 that supplies flush water from the water supply source into the internal tank, and the water supply device 20 supplies flush water from the water supply source. Since there is a branch pipe 38 for guiding a part of the wash water flowing into the tank device 4 to the water discharge member 60 of the wash basin 6, the wash water supplied into the wash water tank device 4 by the water supply device 20 can be used to wash hands. In this case, since mist-like cleansing water is spouted from the water spouting member 60, a sufficient feeling of hand washing can be obtained with a small amount of water of about 300 cc.

According to the flush toilet 1 of the present embodiment, the spreader 70 of the water discharging member 60 is attached to the substantially linear rear wall portion 68 and the support plate 72 in the vertical direction. , washing water can be easily discharged forward and downward.

In the above-described embodiment, the washing water is sprayed from the water discharging member to the washing bowl in the form of a mist, but as a modified example, instead of the washing water, the water discharging member may be sterilized water, air-contaminated water, or the like. may be spouted.

In addition, in the above-described embodiment, the spreader of the water discharge member is attached to the rear wall portion via the support plate. may

1 Flush toilet bowl 2 Toilet bowl body 4 Flush water tank device 6 Wash basin 38 Branch pipe 60 Water discharge member 62 Wash bowl 64 Drain port 66 Front wall 68 Rear wall 70 Spreader 72 Support plate 74 Fixing member S Inner space

Claims (9)

A flush toilet equipped with a flush water tank device with a hand basin,
a toilet bowl body;
a flush water tank device provided behind the toilet bowl body for storing flush water supplied from a water supply source;
The washing water tank device, comprising: a water discharging member for discharging washing water supplied from the water supply source from a water discharge port; A washbasin provided above,
has
The hand-washing basin includes a drain port for draining wash water discharged from the water discharge member into the wash water tank device, a front wall portion extending forward and upward from the drain port, and the drain port. a rear wall portion extending to a position higher than the upper end of the front wall portion on the rear side of the
The water discharge member is provided in the inner space of the hand-washing bowl, and is attached to the surface of the rear wall portion so that the water discharge port is positioned below the upper end of the rear wall portion. shaped washing water is discharged forward and downward,
A flush toilet bowl characterized by: 2. The flush toilet according to claim 1, wherein said water discharge member is provided on said rear wall portion so that at least a part of said water discharge member is positioned higher than the upper end of the lowest region of said front wall portion. 3. The flush toilet according to claim 2, wherein the water discharge member is provided on the rear wall so that the water discharge port is positioned higher than the upper end of the lowest region of the front wall. The water discharge member has a water passage for guiding wash water toward the water discharge port,
The water passage has a downward slope portion that slopes downward toward the front,
2. The axis of the downwardly sloping portion is slanted downward from an imaginary straight line connecting the upper end of the rear wall portion and the upper end of the front wall portion in the central cross section of the hand wash basin in the left-right direction. 4. The flush toilet bowl according to any one of 1 to 3. The water discharge member has a water passage for guiding wash water toward the water discharge port,
5. The flushing system according to any one of claims 1 to 4, wherein the water passage is provided on the downstream side of the water passage and includes an enlarged diameter portion that expands in diameter from the upstream side toward the spout. toilet bowl. The enlarged-diameter portion of the water discharge member is formed so that, of the wash water discharged in mist from the water discharge port, the wash water that spreads most upward collides with the front wall portion. 5. The flush toilet bowl according to 5. The enlarged-diameter portion of the water discharge member is formed so that, of the cleansing water discharged from the water discharge port in mist form, the cleansing water that spreads most downward collides with the rear wall portion. 6. The flush toilet bowl according to 6. The water discharge member has a water passage for guiding wash water toward the water discharge port,
The water passage has a downward slope portion that slopes downward toward the front,
An imaginary straight line obtained by extending the axis of the downwardly inclined portion from the spout toward the inner space of the basin is configured to intersect the basin on the rear side of the front end of the drain port. 8. The flush toilet according to any one of 1 to 7. The washing water tank device comprises a water supply device for supplying washing water from a water supply source into the washing water tank device,
The water supply device according to any one of claims 1 to 8, wherein the water supply device has a branch pipe for guiding part of the wash water flowing from the water supply source into the wash water tank device to the wash basin. Flush toilet bowl.

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