JP2018048542A - Water closet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water closet capable of increasing the amount of water flow to convey waste and of improving conveying performance to convey the waste even when the amount of washing water is reduced on water-saving request.SOLUTION: The water closet includes a toilet bowl body 2 including a bowl part, and a skirt part 9 provided covering a drain trap pipeline at its lateral side, a drain pipeline 16 communicating with the drain trap pipeline, the drain pipeline including a split part 26 provided on the downstream side of an upstream side drain pipeline part, and a delay flow path 28 branching from the split part. A region inside the skirt part includes a center region D as a region on the center side extending in the direction of joining the entrance and the exit of the drain trap pipeline in a planar view, and a lateral region E on the lateral side of the center region. The delay flow path 28 forms a flow path in the lateral region E to combine washing water flowing in from the split part 26 prior to waste with the flow of washing water to arrive at the split part later than when it flows in.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a flush toilet, and more particularly, to a flush toilet that is washed with flush water and discharges filth.

  Conventionally, as shown in Patent Document 1, a drainage socket that connects a drainage channel of a toilet body of a flush toilet and an underfloor drainage pipe is known. Such a drain socket includes a toilet body side connecting pipe member connected to the outlet of the drainage channel of the toilet body, an underfloor side connecting pipe member connected to the inlet of the underfloor drain pipe, and a toilet body side connecting pipe member And an intermediate pipe member extending in a substantially straight line for connecting the underfloor side connecting pipe member.

  In a flush toilet equipped with such a drain socket, when toilet flushing is started and the filth in the bowl is discharged from the toilet body, first, a part of the washing water stored in the bowl is preceded by the filth. As pre-washing water, it flows from the drainage channel into the drainage socket and flows into the building piping. Thereafter, a cleaning water transport flow that mainly flows through the subsequent side of the filth and transports the filth flows into the drain socket and flows into the building piping together with the filth.

JP 2011-179187 A

  However, in the flush toilet as described in Patent Document 1, it is required to reduce the amount of washing water used for one toilet flushing due to the demand for water saving. At this time, the amount of water in the conveying flow for conveying the filth by flowing on the subsequent side of the filth also decreases. Due to such a decrease in the amount of water in the conveying flow, there arises a problem that the conveying performance for conveying the filth decreases, for example, the distance that the filth can be conveyed in the pipe line extending in the lateral direction is shortened.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and even if the amount of washing water for washing the toilet bowl is reduced due to a demand for water saving, the conveying flow that pushes filth away. It is an object of the present invention to provide a flush toilet that can increase the amount of water and improve the conveyance performance for conveying filth.

In order to achieve the above object, the present invention is a flush toilet that is washed with washing water and discharges filth, a bowl portion that receives the filth, a drain trap pipe extending from a lower portion of the bowl portion, A toilet body provided with a bowl portion and a skirt portion provided so as to cover the drain trap pipe from the side, and a drain pipe communicating with the drain trap pipe and discharging the filth to a downstream building pipe An upstream drainage pipe part connected to the downstream side of the drainage trap pipe, a shunt part provided downstream of the upstream drainage pipe part, and the above A downstream drainage pipe section provided on the downstream side of the diversion section, and a delay flow path branched from the diversion section, and the area inside the skirt section is a plan view of the drain trap pipe One that is orthogonal to the direction connecting the entrance and exit Including a central region extending in a direction connecting the inlet and the outlet of the drain trap conduit as a region closer to the center than the width of the drain trap conduit, and a lateral region lateral to the central region, and the delay The flow path forms a flow path in the side region, and the wash water that has flowed in from the diversion portion preceding the filth is joined to the flow of the wash water that reaches the diversion portion later than when it was introduced. It is characterized by letting.
In the present invention configured as described above, at the time of cleaning, the diverting portion causes at least a part of the low-flow-rate cleaning water preceding the filth to flow into the delay channel, and the delay channel is the delay channel cleaning water. Are joined to the conveying flow that pushes away the filth that reaches the branching portion at a later timing than when the washing water is introduced. At this time, since the delay channel forms a channel in the side region between the drain trap pipe and the skirt, the delay channel is expanded to a relatively wide region on the side region side, and the delay channel The bottom area can be increased, and the washing water preceding the filth having a larger amount of water can be easily introduced into the delay flow path. Therefore, according to the present invention, even when the amount of washing water is reduced due to water saving, the washing water preceding the filth with a larger amount of water can be merged into the conveying flow that pushes the filth from the delay flow path. Further, it is possible to increase the amount of water in the filth transport flow and improve the transport performance for transporting filth.
If the delay channel is not formed in the side region, but only in the central region, and the bottom area cannot be increased to the side, the inner space in the vertical direction of the delay channel is increased. It is conceivable to increase the amount of washing water that forms and flows inside. However, when the flow rate of the wash water flowing into the delay flow path is low, the water level cannot rise, and the amount of wash water flowing inside cannot be increased. Therefore, according to the present invention, by forming the delay flow path in the side region and increasing the bottom area in the side region, the amount of the wash water flowing through the interior more reliably regardless of the flow rate of the wash water flowing in. Can be increased. Therefore, according to the present invention, it is possible to join the cleaning water preceding the filth with a larger amount of water into the conveying flow that pushes the filth from the delay channel.

In the present invention, preferably, the delay flow path includes a connection part connected to the flow dividing part, and an expansion flow path extending from the connection part to the side region side, and the connection part is the flow dividing part. A bent flow path is formed to change the flow direction of the wash water flowing in from the side toward the side area side flow path on the side.
In the present invention configured as described above, the flow rate at which the cleaning water preceding the filth flows through the expansion channel by changing the flow direction of the cleaning water flowing in from the flow dividing portion toward the side region side in the connecting portion. And the time for flowing through the expansion flow path can be increased. Accordingly, it is possible to prevent the cleaning water that has flowed into the delay flow path prior to the filth from flowing out to the diversion section before the conveyance flow of the filth reaches the diversion section. Therefore, according to the present invention, it is possible to reliably join the cleaning water preceding the filth with a larger amount of water by the conveying flow that pushes the filth from the delay flow path.

In this invention, Preferably, the said expansion flow path is provided in the said side area | region of one side and the other side among the sides of the said center area | region.
In the present invention configured as described above, the expansion flow path provided in the side area on one side and the other side of the side of the central area, the delay flow path is expanded to a wider area on the side area side, The bottom area of the delay channel can be further increased. Therefore, according to the present invention, it is possible to easily allow the cleaning water preceding the filth having a larger amount of water to flow into the delay flow path.

In the present invention, preferably, the expansion channel extends in a direction along a direction connecting the inlet and the outlet of the drain trap pipe.
In the present invention configured as described above, the extension flow path extends in a direction along the direction connecting the inlet and the outlet of the drain trap pipe, so that the delay flow path is set to a wider area on the side area side. The bottom area of the delay flow path can be further increased. Therefore, according to the present invention, it is possible to easily allow the cleaning water preceding the filth having a larger amount of water to flow into the delay flow path.

In the present invention, preferably, the expansion channel extends to a position partially overlapping with the drain trap pipe in a side view.
In the present invention configured as described above, the extended flow path extends in a side view to a position partially overlapping with the drain trap pipe, so that the delay flow path is expanded to a wider area on the side area side, The bottom area of the delay channel can be further increased. Therefore, according to the present invention, it is possible to easily allow the cleaning water preceding the filth having a larger amount of water to flow into the delay flow path.

In the present invention, preferably, the branch part of the drain pipe forms a longitudinal channel extending in the vertical direction, and the connection part of the delay channel is the drain of the longitudinal channel of the branch part. Connected to the rising pipe side of the trap pipe.
In the present invention configured as described above, when a high-conveyance flow conveying filth flows into the vertical flow path of the diverting section from the ascending pipe of the drain trap pipe at the time of washing, Is caused to flow down on the side wall side opposite to the rising pipe side of the drain trap pipe among the side walls of the vertical flow path due to relatively strong water force. On the other hand, at the time of washing, the washing water having a low flow velocity preceding the filth flows down the ascending pipeline side of the drain trap pipeline in the side wall of the longitudinal channel due to a relatively weak water flow. Therefore, according to the present invention, it is possible to make it difficult for the washing water having a high flow velocity for conveying the waste to flow into the delay flow path, and more reliably selecting the washing water having a low flow velocity that precedes the waste at the start of washing. Thus, it can flow into the delay flow path.

In the present invention, preferably, the delay flow path includes an outlet part that is different from the connection part, and the delay flow path is configured to allow the wash water flowing in from the connection part to flow after the flow of water after the flow-in. The washing water that reaches the diversion part is joined from the outlet part.
In the present invention configured as described above, it is not necessary for the cleaning water to return to the connecting portion and to flow out as compared with the case where the outlet portion of the delay channel is shared with the connecting portion. It is possible to suppress the state where the flow of the air has stopped for a relatively long time. As described above, the state in which the flow of the washing water stops in the extended flow path continues for a relatively long time, so that it is possible to suppress a situation in which the situation is delayed so as not to join the filth carrier flow. Therefore, according to the present invention, even when the amount of washing water for washing the toilet bowl is reduced due to water saving, the washing water preceding the filth having a larger amount of water joins the conveying flow that pushes the filth from the delay channel. It is possible to increase the amount of water in the filth transport flow and improve the transport performance for transporting filth. Moreover, according to this invention, it can suppress that the floating filth in washing water sinks by the flow of washing water stopping in an expansion channel, and it remains in an expansion channel.

In the present invention, it is preferable that the delay flow path includes an outlet part that is different from the connection part, and the delay flow path is configured to allow the wash water flowing in from the connection part to flow after the flow in time. The flow of the washing water reaching the diversion part is merged from the outlet part, and the expansion channel is provided in a first expansion channel provided in the one side region and in the other side region. A second expansion channel, and the outlet includes a first outlet that forms an outlet of the first expansion channel, and a second outlet that forms an outlet of the second expansion channel, The first expansion flow path from the connection part to the first outlet part and the second expansion flow path from the connection part to the second outlet part are independently formed.
In the present invention configured as described above, the first expansion flow path extending from the connection portion to the first outlet portion and the second expansion flow path extending from the connection portion to the second outlet portion are independently formed. . Thereby, according to this invention, it can suppress that a flow is disturb | confused by the flow of the wash water in a 1st expansion flow path, and the flow of the wash water in a 2nd expansion flow path joining, and wash water It is possible to suppress the state where the flow of the air has stopped for a relatively long time.

In the present invention, preferably, the drainage pipe is a resin member separate from the toilet body.
In the present invention configured as described above, since the drainage pipe is a resin member separate from the toilet body, for example, the manufacturing error can be reduced as compared with the case where the drainage pipe is made of earthenware. And the delay channel can be reliably provided in the side region.

In this invention, Preferably, the said expansion flow path is provided only in the said side area | region.
In the present invention configured as described above, the expansion channel is provided only in the side region. In the side region, the arrangement of the extended flow path is less likely to be restricted depending on the shape of the drain trap pipe and the entrance position of the building pipe connected to the drain pipe. Therefore, according to this invention, an expansion flow path is applicable to the flush toilet corresponding to the shape of various drain trap lines, and the entrance position of building piping.

In the present invention, preferably, the downstream drainage pipe section includes a lateral flow path extending in a lateral direction to the position of the building pipe, and the outlet of the connection section and the delay flow path is the downstream drainage. An opening is made toward the flow dividing section upstream of the lateral flow path in the pipe section.
In the present invention configured as described above, the connection part and the outlet part of the delay flow path are opened toward the branch part upstream of the lateral flow path of the downstream drainage pipe part. By changing only the length of the lateral flow path according to the entrance position of the building pipe without changing the length of the road, it is possible to correspond to the entrance positions of various building pipes.

  According to the flush toilet of the present invention, even when the amount of washing water is reduced due to a demand for water saving, the amount of water in the conveying flow that pushes away filth can be increased, and the conveyance performance for conveying filth is improved. be able to.

In the vertical sectional view of the flush toilet according to the first embodiment of the present invention, it is a diagram showing a state in which the preceding washing water preceding the filth flows on the preceding side of the filth. In the vertical sectional view of the flush toilet according to the first embodiment of the present invention, it is a diagram showing a state in which the transport flow that acts to sweep away the filth flows on the subsequent side of the filth. It is sectional drawing which followed the II-II line | wire of FIG. 1A. FIG. 1B is an enlarged perspective view showing the internal structure of the flush toilet according to the first embodiment of the present invention shown in FIG. 1A by partially cutting the vicinity of the diverting portion of the drain socket. It is a top view of the drain socket of the flush toilet according to the first embodiment of the present invention. It is sectional drawing along the VV line of FIG. It is sectional drawing which cut the drain socket of the flush toilet by 1st Embodiment of this invention along the VI-VI line of FIG. In the flush toilet according to the first embodiment of the present invention, it is a top view showing a drain socket provided with a delay channel of a first modification. It is sectional drawing along the VIII-VIII line of FIG. FIG. 9 is a cross-sectional view of the flush toilet according to the first embodiment of the present invention, in which a drain socket provided with a delay channel according to a first modification is cut along line IX-IX in FIG. 8. In the flush toilet according to the first embodiment of the present invention, it is a cross-sectional view showing the internal structure of a drain socket provided with a delay channel of a second modified example in a horizontal cross section. It is sectional drawing which shows the structure where the flush toilet by 1st Embodiment of this invention integrally forms the drain socket of the 3rd modification. It is a side view which shows the internal flow path of the drain socket in the flush toilet by 2nd Embodiment of this invention. It is sectional drawing along the XIII-XIII line | wire of FIG. It is sectional drawing along the XIV-XIV line | wire of FIG. It is sectional drawing of the flush toilet bowl by 3rd Embodiment of this invention. In the flush toilet by 3rd Embodiment of this invention, it is a cross-sectional perspective view which shows the internal structure of a drain socket with a center cross section. It is sectional drawing along the XVII-XVII line of FIG. As a flush toilet capable of applying the diversion part and the delay flow path of the drain socket of the flush toilet of each embodiment of the present invention, a drain trap pipe that opens to the floor and a building pipe that extends from the wall surface are connected. It is sectional drawing which shows the flush toilet provided with the drain socket which performs. As a flush toilet capable of applying the diversion part and the delay flow path of the drainage socket of the flush toilet of each embodiment of the present invention, a drain trap pipe that opens to the wall and a building pipe that extends from the wall surface are connected It is sectional drawing which shows the flush toilet provided with the drain socket which performs. As a flush toilet capable of applying the diversion part and the delay flow path of the drainage socket of the flush toilet of each embodiment of the present invention, a drain trap pipe that opens toward the wall and a building pipe that extends from the floor surface It is sectional drawing which shows the flush toilet provided with the drain socket to connect.

Hereinafter, a flush toilet according to a first embodiment of the present invention will be described with reference to the accompanying drawings.
First, a flush toilet according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1A is a vertical sectional view of the flush toilet according to the first embodiment of the present invention, and shows a state in which the preceding washing water preceding the filth flows on the preceding side of the filth, and FIG. It is sectional drawing along the II line.
As shown in FIG. 1A, the flush toilet 1 includes a toilet body 2, a bowl portion 4 is formed on the front side of the upper portion of the toilet body 2, and a water conduit 6 is formed on the upper side of the rear side. A drain trap pipe 8 extending from the lower part of the bowl 4 is formed below the water guide 6 and the bowl 4. The bowl part 4 is formed in a bowl shape and receives dirt. The flush toilet 1 is, for example, a water-saving flush-type flush toilet that is washed with 3.8 to 6 liters of washing water.
The flush toilet 1 of the present embodiment is an example in which the present invention is applied to a floor-standing flush toilet. However, the present invention is not limited to this, for example, a wall-mounted flush toilet or siphon action. It can also be applied to the generated siphon flush toilet.
Hereinafter, in the embodiment of the present invention, the upper side in FIG. 1A is the front, the lower side is the rear, the right side when the toilet body 2 is viewed from the front is the right side, and the left side when viewed from the front is the left side.

  An overhang-shaped rim 10 is formed on the inner side of the upper edge of the bowl portion 4 of the toilet body 2, and a rim spout for discharging wash water supplied from the water conduit 6 is formed in a part of the rim 10. 12 is formed, and the wash water discharged from the rim spout 12 is lowered while swirling to wash the bowl portion 4.

Below the bowl portion 4, there is formed a water storage portion 14 whose water storage surface W ₀ is indicated by a one-dot chain line. The drain trap pipe 8 includes an inlet pipe 8a connected to the lower part of the bowl portion 4, an ascending pipe 8b extending obliquely rearward and upward from the inlet pipe 8a, and a descending pipe 8c descending from the ascending pipe 8b. I have. The bowl portion 4 and the drain trap pipe 8 are made of earthenware and are integrally formed with the toilet body 2. The inlet pipe 8 a forms the inlet 8 f of the drain trap pipe 8.

  Further, a washing water tank device 18 for storing washing water supplied to the toilet body 2 is provided above the water conduit 6 of the toilet body 2. The washing water tank device 18 includes a washing water tank 20 for storing washing water, and the washing water in the washing water tank 20 is communicated with the water conduit 6 of the toilet body 2 at the bottom of the washing water tank 20. A drain port 20a for draining is formed.

  As shown in FIG. 2, the toilet body 2 further includes a skirt portion 9 provided so as to cover the bowl portion 4 and the drain trap pipe 8 from the side. The skirt portion 9 is an outer wall surface formed over the entire outer periphery of the toilet body 2. The skirt portion 9 is formed from the upper end of the toilet body 2 to the floor surface F. Therefore, the skirt portion 9 covers the outside of the bowl portion 4, the drain trap pipe 8 and the drain socket 16.

  The area inside the skirt portion 9 is an area closer to the center than the width of the drain trap pipe 8 in the left-right direction (the direction orthogonal to the direction connecting the inlet 8f and outlet 8d of the drain trap pipe 8) in plan view. And a central region D extending in the front-rear direction (a direction connecting the inlet 8f and the outlet 8d of the drain trap pipe 8) and a lateral region E on the toilet body side of the central region D. The central region D is a rectangular parallelepiped space region extending from the lower part to the upper part with a width of about the drain trap pipe 8 inside the skirt portion 9. The central region D is a region surrounded by the dotted line G1, the dotted line G2, and the front and rear skirt portions 9 in plan view. The side region E is a space region that extends from the lower part to the upper part on the right side and the left side of the central region D inside the skirt portion 9. The side region E is a region surrounded by the dotted line G1 and the skirt portion 9 outside the dotted line G1 and a region surrounded by the dotted line G2 and the skirt portion 9 outside the dotted line G2 in plan view.

Next, the configuration of the drain socket 16 of the flush toilet 1 of this embodiment will be described in detail with reference to FIGS. 3 is an enlarged perspective view showing the internal structure of the flush toilet according to the first embodiment of the present invention shown in FIG. 1A by partially cutting the vicinity of the diverting portion of the drain socket, and FIG. 4 is the first embodiment of the present invention. 5 is a top view of the drainage socket of the flush toilet according to the embodiment, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a drain socket of the flush toilet according to the first embodiment of the present invention. It is sectional drawing cut along the -VI line.
The flush toilet 1 further has a drain socket 16 which is a drain pipe that communicates with the drain trap pipe 8 and discharges filth to the building pipe 22 on the downstream side.
The drain socket 16 includes an upstream drain pipe section 24, a branch section 26, a delay channel 28, and a downstream drain pipe section 30 in the order from the upstream side to the downstream side. The drain socket 16 is a resin member separate from the toilet body 2.

  The upstream drainage pipe part 24 is connected to the outlet 8d of the descending pipe 8c of the drain trap pipe 8 at its upstream end, and extends substantially parallel to the outlet 8d and vertically downward. The upstream drainage pipe section 24 extends from the upper outside of the outlet 8d of the descending pipe 8c to the lower vicinity of the outlet 8d.

  The downstream drainage pipe section 30 is provided on the downstream side of the flow dividing section 26. The downstream drainage pipe section 30 forms a lateral flow path that extends linearly in the lateral direction to the position of the building pipe 22. The downstream end of the downstream drainage pipe section 30 is connected to a building pipe 22 disposed below the floor F where the toilet body 2 is disposed.

  The diversion part 26 is provided on the downstream side of the upstream drainage pipe part 24. The diversion part 26 is connected to the upstream drainage pipe part 24 and further connected to the downstream drainage pipe part 30. The diversion part 26 is a linear flow path extending in the vertical direction between the upstream drainage pipe part 24 and the downstream drainage pipe part 30. In FIG. 5, the diversion part 26 is shown by the dotted line. The diversion part 26 includes a guide part 32 that guides at least a part of the wash water having a relatively low flow rate supplied from the drain trap pipe 8 into the delay flow path 28 along the self. The flow dividing portion 26 further includes a vertical flow path 34 that extends in the vertical direction from the upper end to the lower end of the flow dividing portion 26 inside the guide portion 32. In FIG. 5, the longitudinal flow path 34 is indicated by a one-dot chain line.

  The guide part 32 of the diversion part 26 is formed from the side wall 34 a forming the vertical flow path 34 to the rising pipe line 8 b side of the drain trap pipe 8, and the vertical flow path 34 and the delay flow path 28 of the diversion part 26. Is formed between. The guide portion 32 is disposed on the front side of the vertical flow path 34. The guide part 32 hangs down so as to extend obliquely downward from its upper end, and is formed so that its lower end extends into the delay flow path 28. The guide part 32 forms an acute angle α1 with respect to the vertical line Z. The angle α1 is formed in the range of 5 to 60 degrees, more preferably in the range of 5 to 45 degrees, and more preferably 30 degrees. An inflow opening is formed between the lower end of the guide portion 32 and the bottom surface 50 of the delay flow path 28.

  As shown in FIG. 4, the guide portion 32 is formed from the side wall 34 a forming the vertical flow path 34 to the rising pipe line 8 b side of the drain trap pipe 8, and in the vertical flow path 34, A notch portion 36 is formed as a notch portion between one end and the other end of the guide portion 32 on the opposite side wall side. The guide portion 32 is formed in a substantially half-circumferential portion of the entire circumference of the side wall 34a of the longitudinal flow path 34. In FIG. 4, the notch 36 is schematically indicated by a virtual line. Since the guide portion 32 is not formed in the region of the cutout portion 36, it is possible to prevent the washing water having a high flow velocity for transporting the filth from colliding with the guide portion 32 and maintain a relatively strong water flow while maintaining the longitudinal flow. It flows down the area of the notch 36 in the side wall 34a of the path 34.

  As shown in FIGS. 3 and 5, the connecting portion 38 between the guide portion 32 and the side wall 34a of the flow dividing portion 26 forms a smoothly curved curved surface. On the side wall 34a of the flow dividing portion 26, a guide surface 34b extending in a substantially vertical direction to the upper end of the guide portion 32 is formed. A side surface 8e of the outlet 8d of the drain trap pipe 8 is formed to be substantially flush with the guide surface 34b of the flow dividing portion 26 of the drain socket 16 (see FIG. 1A).

  As shown in FIG. 6, the delay flow path 28 forms a flow path branched from the flow dividing portion 26. The delay flow path 28 forms a flow path in the side region E. The delay flow path 28 is configured to merge the wash water that has flowed in from the flow divider 26 prior to the filth into the flow of wash water that reaches the flow divider 26 later than when it was introduced. The delay flow path 28 is disposed in the lateral direction of the guide portion 32. The delay channel 28 is formed symmetrically with respect to the central axis of the toilet body 2 in the front-rear direction.

  The delay flow path 28 includes a connection part 46 connected to the flow dividing part 26 and an expansion flow path 48 extending from the connection part 46 to the side region E side.

  The connecting portion 46 is connected to the ascending pipeline 8b side of the flow dividing portion 26. The connecting portion 46 includes an inlet 40 that receives the cleaning water that has flowed in along the guide portion 32, and the inlet 40 also functions as an outlet 44 that causes the cleaning water that has flowed into the connecting portion 46 to flow out. Further, the connecting portion 46 also functions as a storage chamber in which the washing water flowing in from the inlet 40 flows inside until it flows out from the outlet 44 and stays temporarily. The inlet 40 of the connecting portion 46 is located below and outside the guide portion 32. The inlet 40 forms an opening that includes about a half circumference of the flow dividing portion 26 on the ascending pipe line 8b side. The delay channel 28 is a storage-type delay channel in which the inlet 40 and the outlet 44 are common and the cleaning water stays temporarily while flowing in the delay channel 28. Furthermore, the connecting portion 46 forms a bent flow path that changes the flow direction of the wash water flowing in from the flow dividing portion 26 toward the side region E on the side. Since the connecting portion 46 forms a bent flow path, the flow rate of the cleaning water flowing inside is reduced. The connection part 46 can delay the timing which this washing water flows through the drain socket 16 from the beginning by flowing washing water inside. Due to such a structure, the delay flow path 28 joins the wash water introduced by the guide part 32 of the diversion part 26 with a delay in the flow of the wash water that reaches the diversion part 26 later than when it was introduced. .

  The expansion channel 48 is provided in the side region E on one side and the other side of the side of the central region D. The expansion channel 48 may be provided only in the side region E on one side or the other side of the side of the central region D. In this embodiment, the expansion channel 48 is provided only in the side region E, but the extension channel 48 may be provided in the central region D and the side region E. The expansion channel 48 extends in a direction along the direction connecting the inlet 8 f and the outlet 8 d of the drain trap pipe 8, that is, in the front-rear direction of the toilet body 2. The extended flow path 48 extends from a position below the descending pipe line 8c of the drain trap pipe 8 to a position partially overlapping with the drain trap pipe 8 in a side view. The expansion channel 48 extends the delay channel 28 in the side region E. The expansion channel 48 extends the delay channel 28 to a wider area in the side region E, and further increases the bottom area of the delay channel 28. The expansion flow path 48 increases the bottom area of the delay flow path 28, so that even when the flow rate of the wash water flowing in is low, the wash water easily flows over a wide area of the delay flow path 28. Compared to the case where the area is small, more washing water can be easily flown into the delay flow path. Therefore, by forming the delay flow path 28 in the side region E and increasing the bottom area in the side region E, the amount of the wash water that flows through the delay flow path more reliably regardless of the flow rate of the wash water flowing in. Can be increased. The expansion channel 48 also functions as a storage chamber in which the cleaning water can be temporarily stayed. The extension flow path 48 is configured to decelerate the flow rate of the wash water that has flowed in since the wash water that has flowed in from the connection portion 46 flows back in the expansion flow channel 48 toward the connection portion 46.

  Further, as shown in FIGS. 5 and 6, the bottom surface 50 of the delay flow path 28 protrudes into the flow dividing portion 26 to a position below the guide portion 32 of the flow dividing portion 26 and facing the guide portion 32. Formed. The end portion 50a of the bottom surface 50 of the delay channel 28 is located outside the outer edge of the vertical channel 34 in a top view. The bottom surface 50 of the delay channel 28 is formed to be slightly inclined toward the inlet 40 in the connection portion 46 and the expansion channel 48. Therefore, the flow rate of the wash water that flows in can be reduced, and the remaining water in the delay flow path 28 can be drained toward the inlet 40.

Next, the operation (action) of the flush toilet according to the first embodiment of the present invention will be described with reference to FIG. 1A, FIG. 1B and FIG.
With reference to FIG. 1A, FIG. 1B, and FIG. 6, the state when drainage by toilet flushing is performed in the flush toilet according to the first embodiment of the present invention will be described. In FIG. 1A, FIG. 1B, and FIG. 6, the flow of the preceding washing water having a relatively low flow velocity preceding the filth C is indicated by the arrow A (A0 to A6), and the filth is mainly swept by the subsequent side of the filth C. The flow of the flow is indicated by arrows B (B0 to B4). Here, the “preceding side of the filth C” refers to the front side that precedes the filth C on the flow path through which the filth C flows. “Succeeding side of the filth C” refers to the rear side following the filth C on the flow path of the filth C.

  As shown in FIG. 1A, FIG. 1B, and FIG. 6, after the user uses the flush toilet 1, the drain 20a of the flush water tank 20 of the flush water tank device 18 is opened, and the flush water is discharged from the drain 20a. Drained into the water conduit 6 of the toilet body 2. Then, the wash water in the water conduit 6 is discharged from the rim spout 12 of the flush toilet 1 into the water reservoir 14 and the toilet body 2 is washed. The washing water including the filth C in the water reservoir 14 flows down from the inlet pipe 8a of the drain trap pipe 8 to the rising pipe 8b and descends due to the flowing water action due to the drop of the washing water from the water conduit 6 to the water reservoir 14. It is washed away by the pipe line 8 c and sent to the outlet 8 d of the drain trap pipe line 8.

First, a state in which washing water having a relatively low flow velocity flows prior to the flow of filth will be described.
As shown in FIG. 1A, at the start of toilet cleaning, the preceding washing water A having a relatively low flow velocity precedes the filth C flows on the leading side of the filth C as indicated by an arrow A0. The preceding washing water A flowing on the leading side of the filth C has a relatively small amount of washing water.

As shown in FIG. 1A, at the start of toilet flushing, the preceding washing water A gradually flows out from the ascending pipeline 8b to the descending pipeline 8c. The preceding washing water A having a relatively low flow rate has a weak water flow, and flows down along the side surface 8e on the ascending conduit 8b side of the descending conduit 8c, as indicated by an arrow A1. Furthermore, the preceding washing water A smoothly flows down from the side surface 8e along the guide surface 34b of the flow dividing portion 26, and as indicated by an arrow A2, from the guide surface 34b toward the delay flow path 28 along the guide portion 32. Led. The preceding washing water A is attracted to the guide portion 32 by the Coanda effect, and the flow direction is deflected in the direction in which the guide portion 32 extends. Thus, at least a part of the preceding washing water A flows into the inlet 40 of the connecting portion 46 of the delay flow path 28 as indicated by the arrow A3. The preceding washing water A that has flowed into the connecting portion 46 flows from the connecting portion 46 toward the expansion channel 48 as indicated by an arrow A4 in FIG. Since the flow direction of the preceding washing water A is deflected at the connecting portion 46, the flow velocity is lower than the flow velocity at the time of inflow. The preceding washing water A is delayed with respect to the flow of the washing water flowing through the longitudinal flow path 34 that is the main flow path by flowing through the connection portion 46 and the expansion flow path 48. The preceding washing water A flows gently so as to be temporarily retained in the connecting portion 46 and the expansion channel 48 and returns to the mainstream. When the time has elapsed since the start of cleaning and the amount of cleaning water flowing into the inlet 40 of the connecting portion 46 is reduced or eliminated, the preceding cleaning water A in the connecting portion 46 and the expansion flow path 48 becomes as indicated by an arrow A5 in FIG. 1B. , Flows toward the outlet 44 and flows out from the outlet 44 toward the longitudinal flow path 34.
The "Coanda effect" here is a phenomenon in which the jet is bent along the solid wall, and the phenomenon that the water flow is bent toward the finger when the finger is brought close to the tap is due to the Coanda effect. To do.

Next, the conveyance flow which pushes away filth will be described.
As shown in FIG. 1A, at the start of toilet flushing, a transport flow B that strongly pushes filth is formed by the flowing water action caused by the drop of the wash water from the water conduit 6 to the reservoir 14.
As shown by the arrow B0, the conveying flow B acting to push away the filth C flows around the filth C and mainly on the subsequent side of the filth C. The carrier stream B mainly forms a shoulder water that flows on the subsequent side of the filth C. Such a carrier flow B has a relatively high flow rate and a relatively large amount of washing water. The conveyance flow B acts so as to flush the filth C mainly from the subsequent side. The inventor of the present invention has found that the force for sweeping the filth C of the transport stream B and the kinetic energy of the transport stream B can be further improved by increasing the amount of water in the transport stream B.

  As shown in FIG. 1B, since the filth C and the conveyance flow B have a relatively high flow velocity, the main flow of the filth C and the conveyance flow B is the ascending pipe in the descending pipeline 8c as shown by an arrow B1. It flows down along the side wall side opposite to the path 8b. The main stream of the filth C and the transport flow B passes through the notch 36 on the side wall side opposite to the ascending pipe line 8b in the side wall 34a of the vertical flow path 34, as indicated by an arrow B2. Furthermore, as shown by an arrow B3, the main stream of the filth C and the transport stream B flows down in the longitudinal channel 34, which is the main channel, and collides with the bottom surface of the delay channel 28 and flows into the delay channel 28. Being suppressed.

  In the preceding washing water A having a relatively low flow rate, a relatively large proportion of the amount of the preceding washing water A that flows is guided to the delay flow path 28 along the guide portion 32. On the other hand, in the transport flow B having a relatively high flow velocity, as shown by an arrow B1 ′, a relatively small proportion of the cleaning water flows along the guide portion 32 in the flow rate of the transport flow B that flows. Led to. Therefore, the ratio of the preceding washing water A guided to the delay flow path 28 along the guide portion 32 in the preceding washing water A is the transport flow B guided to the delay flow path 28 along the guide portion 32 in the transport flow B. Is greater than the percentage of In addition, the ratio of the conveyance flow B guide | induced to the delay flow path 28 along the guide part 32 among the conveyance flows B is a ratio of 0% or more.

The preceding washing water A flowing out from the outlet 44 to the longitudinal flow path 34 is joined to the transport flow B as indicated by an arrow A6. As described above, the predetermined cleaning time A that has passed through the delay flow path 28 has elapsed until the preceding washing water A that has flowed into the delay flow path 28 flows out from the outlet 44 toward the vertical flow path 34. . Therefore, the preceding washing water A is merged with the transport flow B that reaches the longitudinal flow path 34 of the diverting portion 26 at a timing after the elapse of a predetermined time after the preceding washing water A flows into the delay flow path 28. The Therefore, a part of the preceding washing water A that has flowed into the delay flow path 28 is converted into the transport flow B.
As a result, the preceding washing water A that contributes little to the conveyance of the filth C can be added to the conveyance flow B, and the amount of water in the conveyance flow B of the filth C can be increased, as shown by the arrow B4. The transport performance can be improved. An arrow B4 indicates the transport flow B in which the preceding cleaning water A merges with the transport flow B and the flow rate and volume of the cleaning water are both increased.

  The filth C and the transport flow B flow in the downstream drainage pipe section 30 toward the downstream side, and are drained into the building pipe 22.

Next, a first modification of the delay flow path 28 of the drain socket 16 will be described with reference to FIGS.
In this modification, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted. In the first embodiment described above, the delay flow path 28 of the drain socket 16 is a storage type delay flow path in which the inlet 40 and the outlet 44 are common and the cleaning water stays in the delay flow path 28 temporarily. .
However, in the first embodiment, as a modification, instead of the delay flow path 28 described above, a bypass flow path type delay flow in which the inlet 40 and the outlet 44 are separately arranged to form a bypass flow path for the washing water. Path 128 may be applied.

  The drainage socket 16 includes an upstream drainage pipe section 24, a diversion section 26, a delay flow path 128, and a downstream drainage pipe section 130 in the order from the upstream side to the downstream side.

  The downstream drainage pipe section 130 is provided on the downstream side of the flow dividing section 26. The downstream drainage pipe section 130 forms a lateral flow path that extends linearly in the lateral direction to the position of the building pipe 22. The downstream end of the downstream drainage pipe section 130 is connected to a building pipe 22 disposed below the floor F where the toilet body 2 is disposed. The downstream drainage pipe section 130 forms an opening for receiving the wash water flowing down from the outlet 144 at the upper part of the downstream portion.

  As shown in FIGS. 7 to 9, the delay flow path 128 forms a flow path branched from the flow dividing section 26. The delay flow path 128 forms a flow path in the side region E. The delay flow path 128 joins the wash water that has flowed in from the flow dividing section 26 prior to the filth into the flow of wash water that reaches the flow dividing section 26 later than when it was flowed in. The delay flow path 128 is disposed in the lateral direction on the front side of the guide portion 32. The delay flow path 128 is formed symmetrically with respect to the central axis in the front-rear direction of the toilet body 2.

  The delay flow path 128 includes a connection part 146 connected to the flow dividing part 26 and an expansion flow path 148 extending from the connection part 146 to the side region E side.

  The connecting portion 146 is connected to the ascending conduit 8 b side of the drain trap conduit 8 of the diverter 26. The connection portion 146 includes an inlet 40 that receives the wash water that has flowed in along the guide portion 32. Further, the connecting portion 146 also functions as a storage chamber in which the cleaning water flowing in from the inlet 40 flows inside until it flows out from the outlet 144 and stays temporarily. The delay channel 128 is further provided with an outlet 144 that is separate from the inlet 40 of the connecting portion 146 and allows the washing water flowing into the delay channel 128 to flow out. The outlet 144 forms the outlet of the expansion channel 148. Therefore, the connecting portion 146 of the delay flow path 128 and the expansion flow path 148 form a bypass flow path from the inlet 40 to the outlet 144.

  The connecting portion 146 forms a bent flow path that changes the flow direction of the flowing wash water toward the side region E on the side. Since the connecting portion 146 forms a bent flow path, the flow rate of the cleaning water flowing inside is reduced. The connection part 146 can delay the timing which this washing water flows through the drain socket 16 from the beginning by flowing washing water inside.

  The expansion channel 148 includes a first expansion channel 148a provided in one side region E of the sides of the central region D and a second expansion channel 148b provided in the other side region E. I have. As described above, the expansion channel 148 is provided in the side region E on one side and the other side of the side of the central region D. The expansion flow path 148 may be provided only in the side region E on one side or the other side of the side of the central region D. In this embodiment, the expansion channel 148 is provided only in the side region E, but the extension channel 48 may be provided in the central region D and the side region E. The expansion channel 148 extends in the direction along the drain trap pipe 8, that is, in the front-rear direction of the toilet body 2. The extended flow path 148 extends from a position below the descending pipe line 8c of the drain trap pipe 8 to a position partially overlapping with the drain trap pipe 8 in a side view. The expansion flow path 148 extends the delay flow path 28 in the side region E. The expansion flow path 148 extends the delay flow path 28 to a wider area in the side area E, and further increases the bottom area of the delay flow path 128. The expansion flow path 148 increases the bottom area of the delay flow path 128, so that even when the flow rate of the wash water flowing in is low, the wash water easily flows over a wide area of the delay flow path 128. Compared to the case where the area is small, more washing water can be easily flown into the delay flow path. Therefore, by forming the delay flow path 128 in the side region E and increasing the bottom area in the side region E, the amount of wash water that flows through the delay flow path more reliably regardless of the flow rate of the wash water that flows in. Can be increased. The expansion channel 148 also functions as a storage chamber in which the cleaning water can be temporarily stayed. The extension flow path 148 is configured to decelerate the flow rate of the wash water that flows in while the wash water that flows in from the connection portion 146 flows laterally in the expansion flow path 48 with respect to the vertical direction.

  The bottom surface 50 of the delay channel 28 is formed to be slightly inclined toward the outlet 144 in the connection portion 46 and the expansion channel 48. Therefore, it is possible to moderately reduce the flow rate of the inflowing cleaning water and drain the remaining water toward the outlet 144.

  The outlet 144 is formed at a different position as an outlet part different from the inlet 40. The outlet 144 is formed at the downstream end of the expansion channel 148. The outlet 144 includes a first outlet 144a that forms the outlet of the first expansion channel 148a, and a second outlet 144b that forms the outlet of the second expansion channel 148b. The outlet 144 is formed above the downstream drainage pipe section 130 and above the building pipe 22. The outlet 144 is opened downward and allows the washing water to flow down into the downstream downstream drainage pipe section 130 and the building piping 22. Therefore, the delay flow path 128 is a bypass flow path type delay flow path in which the inlet 40 and the outlet 144 are separately formed to form a bypass flow path for the washing water. With such a structure, the delay flow path 128 reaches the flow dividing section 26 later than the time when the wash water that flows in along the guide section 32 of the flow dividing section 26 flows from the downstream drainage pipe section 130. Merge with the flow of wash water. In addition, the 1st expansion flow path 148a from the connection part 46 to the 1st exit 144a and the 2nd expansion flow path 148b from the connection part 46 to the 2nd exit 144b are formed independently.

Next, with reference to FIGS. 1A, 1B, and 7 to 9, operations (actions) related to the first modification of the delay flow path in the flush toilet according to the first embodiment of the present invention will be described.
With reference to FIG. 1A, FIG. 1B, FIG. 8, and FIG. 9, the state when drainage by toilet flushing is performed in the flush toilet according to the first modification of the first embodiment of the present invention will be described. In FIG. 1A, FIG. 1B, FIG. 8 and FIG. 9, the flow of the preceding washing water having a relatively low flow velocity preceding the filth C is indicated by arrows A (A0 to A4, A7 and A8), including the filth C and mainly. The flow of the conveyance flow which flows through the subsequent side of the filth C and pushes away the filth is indicated by arrows B (B0 to B3, B5 and B6). Regarding the operation of this modified example, the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

First, a state in which washing water having a relatively low flow velocity flows prior to the flow of filth will be described.
As shown in FIG. 1A, at the start of toilet cleaning, as shown by an arrow A0, the preceding washing water A having a relatively low flow velocity precedes the filth C and flows on the leading side of the filth.

  As shown in FIG. 1A, at the start of toilet flushing, the preceding washing water A gradually flows out from the ascending pipeline 8b to the descending pipeline 8c. The preceding washing water A having a relatively low flow rate has a weak water flow, and flows down along the side surface 8e on the ascending conduit 8b side of the descending conduit 8c, as indicated by an arrow A1. Further, the preceding washing water A smoothly flows down from the side surface 8e along the guide surface 34b of the flow dividing portion 26, and as indicated by an arrow A2, toward the delay flow path 128 from the guide surface 34b along the guide portion 32. Led. The preceding washing water A is attracted to the guide portion 32 by the Coanda effect, and the flow direction is deflected in the direction in which the guide portion 32 extends. As shown in FIG. 9, at least a part of the preceding washing water A flows into the inlet 40 of the delay flow path 128 as indicated by an arrow A3. The preceding washing water A that has flowed into the connection portion 146 flows from the connection portion 146 toward the expansion flow path 148 as indicated by an arrow A4. Since the flow direction of the preceding washing water A is deflected at the connecting portion 46, the flow velocity is lowered than the flow velocity at the time of inflow.

  Since the connecting portion 146 and the expansion flow path 148 form a bypass flow path, the preceding washing water A flows through the expansion flow path 148 and flows toward the outlet 144 of the expansion flow path 148 as indicated by an arrow A7. . The preceding washing water A is delayed with respect to the flow of the washing water flowing through the longitudinal flow path 34 that is the main flow path by flowing through the connection portion 146 and the expansion flow path 148. As shown by arrow A8 in FIG. 8, the preceding washing water A flows downward from the outlet 144 and flows into the downstream drainage pipe section 130 and the building piping 22.

Next, the conveyance flow which pushes away filth will be described.
In FIG. 1A and FIG. 1B, as shown by an arrow B0, the conveyance flow B that acts to sweep away the filth C flows around the filth C and mainly the subsequent side of the filth C. As shown by an arrow B1, the main stream of the filth C and the transport flow B flows down along the side wall of the descending pipeline 8c opposite to the ascending pipeline 8b. The main stream of the filth C and the transport stream B passes through the notch 36 of the side wall 34a of the longitudinal flow path 34 as shown by an arrow B2. Further, as shown by an arrow B3, the main stream of the filth C and the transport flow B flows down in the vertical flow path 34, collides with the bottom surface 50 of the delay flow path 128, and flows into the delay flow path 128. Is suppressed.

  As shown in FIG. 8, the main stream of the filth C and the transport stream B flows in the downstream drainage pipe section 130 as shown by an arrow B5. In the downstream portion of the downstream drainage pipe section 130, the preceding washing water A flowing down from the outlet 144 is joined to the main stream of the filth C and the transport stream B as indicated by an arrow A8. As described above, the pre-wash water A that has flowed into the delay flow path 128 flows around the connection portion 146 and the expansion flow path 148 for a predetermined distance before flowing out from the outlet 144 toward the downstream drainage pipe section 130. A predetermined time passes after passing the road. Further, the preceding washing water A passing through the detour channel has a relatively low flow rate, and the carrier flow B that flows later has a relatively high flow rate. Therefore, the preceding washing water A that has flowed into the delay flow path 128 reaches the vertical flow path 34 of the diverting portion 26 at a delayed timing after the elapse of a predetermined time after the previous washing water A has flowed. The transport flow B is joined at the position of the downstream portion of the downstream drainage pipe section 130. Therefore, a part of the preceding washing water A that has flowed into the delay flow path 128 is converted into the transport flow B. As a result, the pre-wash water A that contributes little to the conveyance of the filth C can be added to the conveyance flow B, and the amount of water in the conveyance flow B of the filth C can be increased as shown by the arrow B6. The transport performance can be improved. An arrow B6 indicates the transport flow B in which the preceding cleaning water A merges with the transport flow B and the flow rate and volume of the cleaning water are both increased.

  The filth C and the transport stream B flow further downstream in the downstream drainage pipe section 30 and are drained into the building pipe 22.

Next, a second modification of the delay flow path 28 of the drain socket 16 will be described with reference to FIG. In this modification, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted. In the first embodiment described above, the delay flow path 28 of the drain socket 16 is a storage type delay flow path in which the inlet 40 and the outlet 44 are common and the cleaning water stays in the delay flow path 28 temporarily. .
However, in the first embodiment, as a modification, instead of the delay flow path 28 described above, a bypass flow path type delay flow in which the inlet 40 and the outlet 44 are separately arranged to form a bypass flow path for the washing water. Path 228 may be applied.

  The drainage socket 16 includes an upstream drainage pipe section 24, a diversion section 26, a delay flow path 228, and a downstream drainage pipe section 30 in the order from the upstream side to the downstream side.

  As shown in FIG. 10, the delay flow path 228 forms a flow path branched from the flow dividing section 26. The delay flow path 228 forms a flow path in the side region E. The delay flow path 228 joins the wash water that has flowed in from the flow dividing section 26 prior to the filth into the flow of wash water that reaches the flow dividing section 26 later than when it was flowed in. The delay flow path 228 is disposed in the lateral direction on the front side of the guide portion 32. The delay channel 228 is formed symmetrically with respect to the central axis of the toilet body 2 in the front-rear direction.

  The delay flow path 228 includes a connection part 246 connected to the flow dividing part 26 and an expansion flow path 248 extending from the connection part 246 to the side region E side.

  The connection part 246 is connected to the ascending pipeline 8b side of the flow dividing part 26. The connection portion 246 includes an inlet 40 that receives the wash water that has flowed in along the guide portion 32. Further, the connecting portion 246 also functions as a storage chamber in which the washing water flowing in from the inlet 40 flows inside until it flows out from the outlet 244 and stays temporarily. The delay channel 228 is further provided with an outlet 244 that is separate from the connection portion 246 and allows the washing water that has flowed into the delay channel 228 to flow out. The outlet 244 forms the outlet of the expansion channel 248. Therefore, the connecting portion 146 of the delay flow path 128 and the expansion flow path 148 form a bypass flow path from the inlet 40 to the outlet 144.

  The connecting portion 246 forms a bent flow path that changes the flow direction of the cleaning water flowing in from the flow dividing portion 26 toward the side region E on the side. Since the connecting portion 246 forms a bent flow path, the flow rate of the cleaning water flowing inside is reduced. The connection portion 246 can delay the timing at which the cleaning water flows through the drain socket 16 by flowing the cleaning water through the connection portion 246 from the beginning.

  The expansion channel 248 includes a first expansion channel 248a provided in one side region E of the sides of the central region D and a second expansion channel 248b provided in the other side region E. I have. As described above, the expansion channel 248 is provided only in the side region E on one side and the other side of the side of the central region D. The expansion channel 248 may be provided in the side region E on one side or the other side of the side of the central region D. In this embodiment, the expansion channel 248 is provided only in the side region E, but the extension channel 248 may be provided in the central region D and the side region E. The expansion channel 248 extends in the direction along the drain trap pipe 8, that is, in the front-rear direction of the toilet body 2. The extension flow path 248 once extends from the connection portion 246 toward the front of the toilet body 2, then U-turns outward, extends rearward, and extends to the side of the flow dividing portion 26. The extended flow path 248 extends from a position below the descending pipe line 8c of the drain trap pipe 8 to a position partially overlapping with the drain trap pipe 8 in a side view. The extension channel 248 extends the delay channel 228 in the side region E. The expansion flow path 248 expands the delay flow path 228 to a wider area in the side area E and further increases the bottom area of the delay flow path 228. The expansion flow path 248 increases the bottom area of the delay flow path 228, so that the wash water easily flows over a wide area of the delay flow path 228 even when the flow speed of the wash water flowing in is low. Compared to the case where the area is small, more washing water can be easily flown into the delay flow path. Therefore, by forming the delay flow path 228 in the side region E and increasing the bottom area in the side region E, the amount of wash water that flows through the delay flow path more reliably regardless of the flow rate of the wash water that flows in. Can be increased. The expansion channel 248 also functions as a storage chamber in which the cleaning water can be temporarily stayed. The extension flow path 248 decelerates the flow rate of the wash water that flows in while the wash water that flows in from the connection portion 246 flows laterally in the expansion flow path 248 over a relatively long distance.

  The bottom surface 50 of the delay channel 228 is formed to be slightly inclined toward the outlet 244 in the connection portion 246 and the expansion channel 248. Therefore, the flow rate of the wash water that flows in can be reduced, and the remaining water can be drained toward the outlet 244.

  The outlet 244 is formed at a position different from the inlet 40 as an outlet part different from the inlet 40. The outlet 244 is formed at the downstream end of the expansion channel 248. The outlet 244 includes a first outlet 244a that forms the outlet of the first expansion channel 248a and a second outlet 244b that forms the outlet of the second expansion channel 248b. The outlet 244 is formed so as to open on the side wall of the longitudinal flow path 34 of the flow dividing portion 26. Therefore, the outlet 244 is opened toward the diversion section 26 on the upstream side of the lateral flow path of the downstream drainage pipe section 30. The outlet 244 allows the washing water to flow into the longitudinal flow path 34 of the flow dividing section 26. The outlet 244 is formed on the side of the longitudinal flow path 34 and on the rear side of the inlet 40. Furthermore, the outlet 244 is located between the end portion of the longitudinal flow path 34 opposite to the ascending pipeline 8b and the opposite end portions of the guide portion 32 opposite to the ascending conduit 8b in the top view. In this manner, the outlet 244 is arranged and distinguished from the inlet 40 on the outer periphery of the vertical flow path 34. The delay channel 228 is a bypass channel type delay channel in which the inlet 40 and the outlet 244 are separately formed to form a bypass channel for the washing water in the storage chamber 242. With such a structure, the delay flow path 228 joins the wash water that has flowed in along the guide portion 32 of the flow dividing portion 26 to the flow of the wash water that reaches the flow dividing portion 26 later than when it has been flowed. In addition, the 1st expansion flow path 248a from the connection part 246 to the 1st exit 244a and the 2nd expansion flow path 248b from the connection part 246 to the 2nd exit 244b are formed independently.

Next, with reference to FIG. 1A, FIG. 1B and FIG. 10, the operation (action) related to the second modification of the delay flow path in the flush toilet according to the first embodiment of the present invention will be described.
With reference to FIG. 1A, FIG. 1B, and FIG. 10, the state when drainage by toilet flushing is performed in the flush toilet according to the first embodiment of the present invention will be described. In FIG. 1A, FIG. 1B and FIG. 10, the flow of the preceding washing water having a relatively low flow velocity preceding the filth C is indicated by arrows A (A0 to A4, A9 and A10), including the filth C, and mainly the filth C. The flow of the conveyance flow which flows through the subsequent side and pushes away filth is indicated by arrows B (B0 to B4). Regarding the operation of this modified example, the same parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

First, a state in which washing water having a relatively low flow velocity flows prior to the flow of filth will be described.
As shown in FIG. 1A, the preceding washing water A having a relatively low flow velocity has a weak water flow and flows down along the side surface 8e on the ascending pipeline 8b side of the descending pipeline 8c, as indicated by an arrow A1. Further, the preceding washing water A smoothly flows down from the side surface 8e along the guide surface 34b of the flow dividing portion 26, and as indicated by an arrow A2, toward the delay flow path 228 from the guide surface 34b along the guide portion 32. Led. As shown in FIG. 10, at least a part of the preceding washing water A flows into the inlet 40 of the delay channel 228 as indicated by an arrow A3. At this time, the preceding washing water A flows down the ascending pipe line 8b side of the longitudinal flow path 34, so that it is suppressed from flowing into the outlet 244. The preceding washing water A that has flowed into the delay flow path 228 flows from the connection portion 246 toward the expansion flow path 248 as indicated by an arrow A4. Since the direction of the flow of the preceding washing water A is deflected at the connecting portion 246, the flow velocity is lower than the flow velocity at the time of inflow.

  Since the connecting portion 246 and the expansion flow path 248 form a bypass flow path, the preceding washing water A flows in the expansion flow path 248 toward the front and then changes its direction to the rear as indicated by an arrow A9. Then, it flows toward the outlet 244 of the expansion channel 248. The extended flow path 248 forms a flow path that returns to the vertical flow path 34. The preceding washing water A flows toward the outlet 244 and flows out from the outlet 244 toward the longitudinal flow path 34 as indicated by an arrow A10.

Next, the conveyance flow which pushes away filth will be described.
As shown in FIG. 1B, the main stream of the filth C and the transport flow B flows down along the side wall side of the descending pipeline 8c opposite to the ascending pipeline 8b, as shown by an arrow B1. The main stream of the filth C and the transport stream B as shown by the arrow B1 flows at a timing later than the preceding washing water A as shown by the arrow A1. The main stream of the filth C and the transport stream B passes through the notch 36 of the side wall 34a of the longitudinal flow path 34 as shown by an arrow B2. Further, as shown by an arrow B3, the main stream of the filth C and the transport flow B flows down in the vertical flow path 34, collides with the bottom surface 50 of the delay flow path 228, and flows into the delay flow path 228. Is suppressed.

  As shown in FIG. 10, the preceding washing water A flowing out from the outlet 244 to the vertical flow path 34 is joined to the main stream of the filth C and the transport flow B as indicated by an arrow A10. The preceding washing water A that has flowed into the delay flow path 228 passes through a detour flow path of a predetermined distance between the connection portion 246 and the expansion flow path 248 before flowing out from the outlet 244 toward the vertical flow path 34, and for a predetermined time. Elapse. Further, the preceding washing water A passing through the detour channel has a relatively low flow rate, and the carrier flow B that flows later has a relatively high flow rate. Therefore, the preceding washing water A that has flowed into the delay flow path 228 reaches the vertical flow path 34 of the diverting section 26 at a delayed timing after a lapse of a predetermined time after the previous washing water A has flowed. In addition, the flow is merged in the flow dividing section 26 with the transport flow B passing through the longitudinal flow path 34. Therefore, a part of the preceding washing water A that has flowed into the delay flow path 228 is converted into the transport flow B. As a result, the preceding washing water A that contributes little to the conveyance of the filth C can be added to the conveyance flow B, and the amount of water in the conveyance flow B of the filth C can be increased, as shown by the arrow B4. The transport performance can be improved. An arrow B4 indicates the transport flow B in which the preceding cleaning water A merges with the transport flow B and the flow rate and volume of the cleaning water are both increased.

Next, a third modification of the drain socket 16 will be described with reference to FIG.
In this modification, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.
In the first embodiment described above, the drain socket 16, which is a drain pipe that communicates with the drain trap pipe 8 and discharges filth to the downstream building pipe 22, is a resin member that is separate from the toilet body 2. is there. However, in the first embodiment, as a modification, the drain pipe 316 may be a single member formed integrally with the toilet body 2. The toilet body 2 and the drain pipe 316 formed integrally are made of earthenware, but may be made of resin.

As shown in FIG. 11, the flush toilet 301 further includes a drain socket 316 that communicates with the drain trap pipe 8 and discharges filth to the downstream building piping 22. The drain socket 316 is a member made of earthenware, and is formed as one member integral with the toilet body 2.
The drain socket 316 includes an upstream drain pipe section 24, a branching section 26, a delay channel 28, and a downstream drain pipe section 30 in the order from the upstream side to the downstream side. Since the descending pipe line 8 c of the drain trap pipe 8 and the upstream drain pipe part 24 of the drain socket 316 are connected as an integral member, the side surface 8 e of the outlet 8 d of the drain trap pipe 8 is connected to the drain socket 316. Is formed substantially flush with the guide surface 34b of the flow dividing portion 26.

According to the flush toilets 1 and 301 according to the first embodiment of the present invention described above, at the time of washing, the diversion unit 26 removes at least a part of the washing water having a low flow velocity preceding the filth from the delay channels 28, 128, and 228. The delay channels 28, 128, and 228 merge the wash water in the delay channel with the transport flow that pushes the filth that reaches the flow dividing section 26 at a later timing than when the wash water is introduced. At this time, since the delay flow paths 28, 128, 228 form a flow path in the side area E between the drain trap pipe 8 and the skirt portion 9, the delay flow paths 28, 128, 228 are formed in the side areas. It can be expanded to a relatively wide area on the E side, and the bottom area of the delay channels 28, 128, 228 can be increased, and the washing water preceding the filth of a larger amount of water flows into the delay channels 28, 128, 228. It can be made easy. Therefore, according to the present invention, even when the amount of washing water is reduced by water saving, the cleaning flow preceding the filth with a larger amount of water is pushed away from the delay flow paths 28, 128, 228, and the conveying flow B The amount of water in the filth transport flow B can be increased, and the transport performance for transporting filth can be improved.
If the delay channels 28, 128, 228 are not formed in the side region E but only in the central region D, and the bottom area cannot be increased to the side, the delay channels 28, 128 It is conceivable to increase the amount of washing water flowing through the inside of the delay flow path by increasing the vertical space 228 in the vertical direction. However, when the flow rate of the wash water flowing into the delay flow paths 28, 128, and 228 is low, the water level cannot rise and the amount of wash water flowing inside cannot be increased. Therefore, according to the present invention, the delay passages 28, 128, 228 are formed in the side region E, and the bottom area is increased in the side region E, so that it is more reliable regardless of the flow rate of the inflowing cleaning water. In addition, it is possible to increase the amount of washing water flowing inside the delay channel. Therefore, according to the present invention, the washing water preceding the filth having a larger amount of water can be merged into the transport flow B that pushes the filth from the delay flow paths 28, 128, and 228.

  Further, according to the flush toilet 1 according to the present embodiment, the connecting portions 46, 146, and 246 change the flow direction of the wash water flowing in from the diversion portion 26 toward the side region E side, thereby leading the filth. Thus, the flow rate of the cleaning water flowing through the expansion channels 48, 148, 248 can be reduced, and the time for flowing the expansion channels 48, 148, 248 can be increased. Accordingly, it is possible to prevent the cleaning water that has flowed into the delay flow paths 28, 128, and 228 prior to the filth from flowing out into the diversion section 26 before the filth transport flow reaches the diversion section. Therefore, according to the present invention, the washing water preceding the filth having a larger amount of water can be reliably joined by the transport flow B that pushes the filth from the delay flow paths 28, 128, and 228.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the delay flow path 28, the extended flow paths 48, 148, 248 provided in the side area E on one side and the other side of the side of the central area D, 128 and 228 can be expanded to a wider area on the side region E side, and the bottom areas of the delay flow paths 28, 128 and 228 can be further increased. Therefore, according to the present invention, it is possible to make it easier for the washing water preceding the filth having a larger amount of water to flow into the delay flow paths 28, 128, and 228.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the expansion channels 48, 148, 248 extend in the direction along the direction connecting the inlet 8f and the outlet 8d of the drain trap pipe 8, so that the delay flow The paths 28, 128, 228 can be expanded to a wider area on the side region E side, and the bottom areas of the delay flow paths 28, 128, 228 can be further increased. Therefore, according to the present invention, it is possible to make it easier for the washing water preceding the filth having a larger amount of water to flow into the delay flow paths 28, 128, and 228.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the expansion channels 48, 148, 248 extend to a position partially overlapping the drain trap pipe 8 in a side view, so that the delay channels 28, 128 228 can be expanded to a wider area on the side region E side, and the bottom areas of the delay flow paths 28, 128, 228 can be further increased. Therefore, according to the present invention, it is possible to make it easier for the washing water preceding the filth having a larger amount of water to flow into the delay flow paths 28, 128, and 228.

  Furthermore, according to the flush toilet 1 according to the present embodiment, at the time of washing, a high transport flow B for transporting filth flows from the ascending pipe 8b of the drain trap pipe 8 into the vertical flow path 34 of the diverter 26. At this time, such a transport flow B flows down on the side wall side opposite to the rising pipe line 8b side of the drain trap pipe 8 among the side walls of the vertical flow path 34 due to a relatively strong water force. On the other hand, at the time of washing, the washing water having a low flow velocity preceding the filth flows down the ascending pipeline 8b side of the drain trap pipeline 8 in the side wall of the vertical channel 34 due to a relatively weak water flow. Therefore, according to the present invention, it is possible to make it difficult for the washing water having a high flow rate for conveying the filth to flow into the delay flow paths 28, 128, and 228, and the washing water having a low flow velocity that flows before the filth at the start of washing. Can be selected more reliably and flow into the delay flow paths 28, 128, 228.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the expansion channel 48 is compared to the case where the outlets 44, 144, 244 of the delay channels 28, 128, 228 are common to the connection portions 46, 146, 246. In 148 and 248, the state in which the flow of the washing water stops can be suppressed from continuing for a relatively long time. As described above, the state in which the flow of the washing water stops in the extended flow channels 48, 148, and 248 continues for a relatively long time, so that it is possible to suppress a situation in which the waste flow cannot be joined. Therefore, according to the present invention, even when the amount of washing water for washing the toilet bowl is reduced due to water saving, the washing water preceding the filth having a larger amount of water is removed from the delay flow paths 28, 128, 228. It can be made to merge with the conveyance flow pushed away, the amount of water of the conveyance flow of filth can be increased, and the conveyance performance which conveys filth can be improved. In addition, according to the present invention, it is possible to prevent suspended dirt in the washing water from sinking and remaining in the expansion channels 48, 148, 248 by stopping the flow of the washing water in the expansion channels 48, 148, 248. it can.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the first expansion flow path 248a from the connection portions 46, 146, 246 to the first outlet 244a, and the connection portions 46, 146, 246 to the second outlet 244b. The second expansion channel 248b is formed independently. Thereby, according to this invention, it can suppress that a flow is disturb | confused by the flow of the wash water in the 1st expansion flow path 248a and the flow of the wash water in the 2nd expansion flow path 248b joining, It is possible to suppress the state where the flow of the washing water is stopped for a relatively long time.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the drainage sockets 16 and 316 are resin members that are separate from the toilet body 2, so that, for example, a manufacturing error compared to the case where the drainage socket is made of ceramics. The delay flow paths 28, 128, and 228 can be reliably provided in the side region E.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the expansion channels 48, 148 and 248 are provided only in the side region E. In the side region E, the arrangement of the expansion channels 48, 148, and 248 depends on the shape of the drain trap pipe 8 and the entrance position of the building pipe connected to the drain socket, but is not easily restricted. Therefore, according to the present invention, the expansion channels 48, 148 and 248 can be applied to flush toilets corresponding to various shapes of the drain trap pipe 8 and the entrance position of the building pipe 22.

  Furthermore, according to the flush toilet 1 according to the present embodiment, the connection part 1 and the outlet part of the delay flow path 28 are opened toward the diversion part 26 upstream of the lateral flow path of the downstream drainage pipe part 30. Therefore, by changing only the length of the lateral flow path according to the entrance position of the building pipe 22 without changing the length of the delay flow path 28, it corresponds to various entrance positions of the building pipe 22 can do. In changing the length of the lateral flow path, for example, a member that connects the downstream drainage pipe section 30 to the upstream diversion section 26, a straight member, or a member that connects to the downstream building piping 22 is used. The length of the lateral flow path is changed by cutting one end side of the linear member.

Next, a flush toilet 401 according to a second embodiment of the present invention will be described with reference to FIGS.
Regarding this embodiment, the same parts as those of the flush toilet 1 according to the first embodiment of the present invention described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the flush toilet 401 according to the second embodiment of the present invention, the guide portion 32 and the delay flow path 28 are disposed on the front side of the diversion portion 26 extending in the vertical direction in the flush toilet 1 according to the first embodiment of the present invention. Unlike the structure, the guide part 432 and the delay flow path 428 are arranged on the lateral side of the flow dividing part 426 extending in the lateral direction.

The flush toilet 401 further has a drain socket 416 that communicates with the drain trap pipe 8 and discharges filth to the downstream building pipe 22.
The drain socket 416 includes an upstream drain pipe section 424, a diversion section 426, a delay channel 428, and a downstream drain pipe section 430, generally in order from the upstream side to the downstream side. The drain socket 416 is a resin member separate from the toilet body 2.

  The upstream drainage pipe part 424 is connected to the outlet 8d of the descending pipe 8c of the drain trap pipe 8 at the upstream end thereof, and extends substantially parallel to the outlet 8d and vertically downward. The upstream drainage pipe part 424 extends from the upper outside of the outlet 8d of the descending pipe line 8c to the lower bent part 424a.

  The downstream drainage pipe part 430 is provided on the downstream side of the diversion part 426 extending in the lateral direction. The downstream drainage pipe line part 430 extends vertically downward from the bent part 430a of the flow path. The downstream end of the downstream drainage pipe section 430 is connected to a building pipe 22 (see FIG. 1A) disposed below the floor F on which the toilet body 2 is disposed.

  The diversion part 426 is provided on the downstream side of the upstream drain pipe part 424. The diversion part 426 is a linear flow path extending in the lateral direction between the upstream drainage pipe part 424 and the downstream drainage pipe part 430. The diversion part 426 includes a guide part 432 that guides at least a part of the wash water having a relatively low flow rate supplied from the drain trap pipe 8 into the delay flow path 428 along the wash water. The diversion part 426 further includes a lateral flow path 434 that extends substantially in the horizontal direction from the upper end to the lower end of the diversion part 426 inside the guide part 432.

  The guide part 432 of the diversion part 426 is formed on the left and right side walls 434 a of the lateral flow path 434 and is formed between the lateral flow path 434 and the delay flow path 428. The guide part 432 is disposed on the side of the lateral flow path 434. The guide part 432 extends so as to expand the flow path from the upstream end to the downstream side. The downstream end of the guide part 432 is formed so as to go into the delay flow path 428. The guide portion 432 forms an acute angle α2 with respect to an imaginary line Z2 (or a central axis of the horizontal flow path 434) along the horizontal flow path 434. The angle α2 is formed in the range of 5 to 60 degrees, more preferably in the range of 5 to 45 degrees, and more preferably 30 degrees. An inflow opening is formed between the downstream end of the guide portion 432 and the downstream side surface 450 of the inlet 440 of the delay channel 428.

  As shown in FIG. 14, the guide portion 432 is formed on the left and right sides of the side wall of the lateral flow path 434. The guide portion 432 is formed in a portion that is approximately half or more of the entire circumference of the side wall of the lateral flow path 434.

  As shown in FIG. 13, a connecting portion 438 between the guide portion 432 of the flow dividing portion 426 and the side wall 434a of the lateral flow path 434 forms a smoothly curved curved surface. On the side wall 434 a of the lateral flow path 434 of the flow dividing portion 426, a guide surface 434 b is formed that extends substantially linearly in the lateral direction to the upstream end of the guide portion 432.

  As shown in FIG. 12 to FIG. 14, the delay flow path 428 forms a flow path branched from the flow dividing portion 426 to the left and right sides. The delay channel 428 forms a channel in the side region E. The delay channel 428 is disposed on the side of the guide portion 432. The delay channel 428 is formed symmetrically with respect to the central axis of the toilet body 2 in the left-right direction. The delay flow path 428 is arranged on both the left and right sides with respect to the flow dividing portion 426, but may be arranged on the left and right sides with respect to the flow dividing portion 426.

  The delay flow path 428 includes a connection portion 446 connected to the flow dividing portion 426 and an expansion flow path 448 extending from the connection portion 446 to the side region E side.

  The connecting portion 446 includes an inlet 440 that receives the cleaning water that flows in along the guide portion 432, and the inlet 440 also functions as an outlet 444 that allows the cleaning water that flows into the connecting portion 446 to flow out. The connection part 446 functions as a storage chamber in which the wash water that has flowed in from the inlet 440 is allowed to flow and stay there temporarily. Further, the inlet 440 is located on the downstream side and the outside of the guide portion 432. The inlet 440 is located on the side of the lateral flow path 434 of the flow dividing section 426 and forms an opening including about the lower half of the left and right sides of the lateral flow path 434. The delay channel 428 is a storage-type delay channel in which the inlet 440 and the outlet 444 are common and the cleaning water stays temporarily while flowing in the delay channel 428. Furthermore, the connecting portion 446 forms a bent flow path that changes the flow direction of the wash water flowing in from the flow dividing portion 426 toward the side region E on the side. Since the connecting portion 446 forms a bent flow path, the flow rate of the cleaning water flowing inside is reduced. The connection portion 446 can delay the timing at which the cleaning water flows through the drain socket 416 by flowing the cleaning water inside. With such a structure, the delay flow path 428 joins the wash water introduced by the guide part 432 of the diversion part 426 with a delay in the flow of the wash water that reaches the diversion part 26 later than when it was introduced. . The bottom surfaces of the connection portion 446 and the expansion flow channel 448 are formed in a flat shape, and form a downward gradient slightly toward the inlet 440.

  The expansion channel 448 is provided in the side region E on one side and the other side of the side of the central region D. The expansion channel 448 may be provided only in the side region E on one side or the other side of the side of the central region D. In this embodiment, the expansion channel 448 is provided only in the side region E, but the extension channel 448 may be provided in the central region D and the side region E. The expansion channel 448 extends in the direction along the drain trap pipe 8, that is, in the front-rear direction of the toilet body 2. The extended flow path 448 extends from a position below the descending pipe line 8 c of the drain trap pipe 8 to a position on the front side of the drain trap pipe 8 in a side view. The expansion channel 448 extends the delay channel 428 in the side region E. The extended flow path 448 expands the delay flow path 428 to a wider area in the side area E, and further increases the bottom area of the delay flow path 428. The expansion flow path 448 increases the bottom area of the delay flow path 428, so that even when the flow rate of the wash water flowing in is low, the wash water easily flows over a wide area of the delay flow path 428. Compared to the case where the area is small, more washing water can be easily flown into the delay channel 428. Therefore, by forming the delay channel 428 in the side region E and increasing the bottom area in the side region E, the amount of the wash water that flows through the delay channel more reliably regardless of the flow rate of the wash water that flows in. Can be increased. The expansion channel 448 also functions as a storage chamber in which the cleaning water can be temporarily stayed. The extension flow path 448 is configured to decelerate the flow rate of the wash water that flows in while the wash water that has flowed in from the connection portion 446 flows in the expansion flow path 448 so as to turn back toward the connection portion 446.

  As shown in FIG. 13, the downstream side surface 450 of the inlet 440 of the delay flow path 428 protrudes into the flow dividing portion 426 to a position downstream of the guide portion 432 of the flow dividing portion 426 and facing the guide portion 432. Formed. The end portion 450 a of the downstream side surface 450 of the delay channel 428 is located outside the outer edge of the lateral channel 434 in a side view as viewed from the upstream side of the lateral channel 434.

  In the second embodiment described above, the drain socket 416, which is a drain pipe that communicates with the drain trap pipe 8 and discharges filth to the downstream building pipe 22, is a resin separate from the toilet body 2. It is a member. However, in the second embodiment, as a modification, the drain pipe may be a single member formed integrally with the toilet body 2. The toilet body 2 and the drain pipe formed integrally are made of earthenware, but may be made of resin.

Next, the operation (action) of the flush toilet according to the second embodiment of the present invention will be described with reference to FIGS. 1A, 1B, and 12 to 14.
With reference to FIG. 1A, FIG. 1B, and FIGS. 12-14, the state when the waste_water | drain by toilet flushing is performed in the flush toilet by 2nd Embodiment of this invention is demonstrated. In FIG. 1A, FIG. 1B, FIG. 12 and FIG. 13, the flow of the preceding washing water with a relatively low flow velocity preceding the filth C is indicated by the arrow A (A0, A1, A11 to A17), mainly the posterior side of the filth C. The flow of the carrier flow that flows through the air and pushes the waste is indicated by arrows B (B0, B1, B7 to B11). Since the toilet body 2 of the flush toilet 401 according to the second embodiment and the toilet body 2 of the flush toilet 1 according to the first embodiment are substantially the same, the flow of washing water in the toilet body 2 of the flush toilet 401 Is mainly described with reference to FIG. 1A and FIG. 1B, the same parts as those of the flush toilet 1 according to the first embodiment of the present invention described above are denoted by the same reference numerals, and the description thereof is as follows. Omitted.

First, a state in which washing water having a relatively low flow velocity flows prior to the flow of filth will be described.
As shown in FIG. 1A, when such toilet flushing is started, the preceding washing water A having a relatively low flow velocity precedes the filth C flows on the leading side of the filth C as indicated by an arrow A0. The preceding washing water A having a relatively low flow rate has a weak water flow, and flows down along the side surface 8e on the ascending conduit 8b side of the descending conduit 8c, as indicated by an arrow A1.

  The preceding washing water A that has flowed into the upstream drainage pipe line part 424 flows downward and flows into the diversion part 426 as indicated by an arrow A11 in FIG. The preceding washing water A that has flowed into the flow dividing section 426 flows in the horizontal direction in the horizontal flow path 434 as indicated by an arrow A12 in FIG. Since the preceding washing water A has a relatively low flow rate, it easily diffuses in the left-right direction in the lateral flow path 434. The preceding washing water A flows along the guide surface 434b from the side wall 434a of the lateral channel 434, and is guided from the guide surface 434b toward the delay channel 428 along the guide portion 432 as indicated by an arrow A13. The preceding washing water A is attracted to the guide part 432 by the Coanda effect, and the flow direction is deflected in the direction in which the guide part 432 extends. In this way, at least a part of the preceding washing water A flows from the inlet 440 of the delay channel 428 as indicated by the arrow A14. The preceding washing water A that has flowed into the connection portion 446 flows from the connection portion 446 toward the expansion channel 448 as indicated by an arrow A15. Since the flow direction of the preceding washing water A is deflected at the connecting portion 46, the flow velocity is lowered than the flow velocity at the time of inflow. The preceding cleaning water A is delayed with respect to the flow of the cleaning water flowing in the lateral flow path 434 that is the main flow path by flowing in the connection portion 446 and the expansion flow path 448. The preceding washing water A flows gently so as to be temporarily retained in the connection portion 446 and the expansion channel 448, and returns to the mainstream. When the time has elapsed since the start of cleaning and the amount of cleaning water flowing into the inlet 440 of the delay channel 428 decreases or disappears, the preceding cleaning water A that has flowed into the connection portion 446 and the expansion channel 448 is as indicated by an arrow A16. , Flows toward the outlet 444 and flows out from the outlet 444 toward the lateral flow path 434.

Next, the conveyance flow which pushes away filth will be described.
As shown in FIG. 1A and FIG. 1B, at the start of toilet flushing, a transport flow B that strongly pushes filth is formed by the flowing water action due to the drop of the wash water from the water conduit 6 to the reservoir 14.
As shown by the arrow B0, the conveying flow B acting to push away the filth C flows around the filth C and mainly on the subsequent side of the filth C. As shown by an arrow B1, the main stream of the filth C and the transport flow B flows down along the side wall of the descending pipeline 8c opposite to the ascending pipeline 8b. The main stream of the filth C and the transport stream B as shown by the arrow B1 flows at a timing later than the preceding washing water A as shown by the arrow A1. The main flow of the filth C and the transport flow B flowing down into the upstream drainage pipe line part 424 flows downward and flows into the diversion part 426 as shown by an arrow B7 in FIG. As shown by an arrow B8 in FIG. 13, the main flow of the filth C and the carrier flow B flowing into the flow dividing section 426 flows in the horizontal direction in the horizontal flow path 434. The main stream of the filth C and the transport stream B has a relatively high flow velocity, and therefore does not easily spread in the left-right direction in the lateral flow path 434 and flows so as to travel substantially straight in the lateral flow path 434. Therefore, the main stream of the filth C and the transport flow B is not easily guided along the guide portion 432 toward the delay flow path 428, as indicated by an arrow B9. Further, the main stream of the filth C and the transport stream B passes through the notch 436 at the lower part of the lateral flow path 434 in the flow as indicated by the arrow B9. Further, the main flow of the filth C and the transport flow B flows down in the lateral flow path 434 and collides with the downstream side surface 450 of the inlet 440 of the delay flow path 428 and the delay flow path 428 as indicated by an arrow B10. It is suppressed that it flows into.

  In the preceding washing water A having a relatively low flow velocity, a relatively large proportion of the amount of the preceding washing water A flowing is guided along the guide portion 432 to the delay channel 428. On the other hand, in the transport flow B having a relatively high flow velocity, a relatively small proportion of the cleaning water in the flow rate of the flowing transport flow B is guided to the delay flow path 428 along the guide portion 432. Therefore, the ratio of the preceding washing water A guided to the delay flow path 428 along the guide portion 432 in the preceding washing water A is the conveyance flow B guided to the delay flow path 428 along the guide portion 432 in the conveyance flow B. Is greater than the percentage of In addition, the ratio of the conveyance flow B guide | induced to the delay flow path 428 along the guide part 432 among the conveyance flows B is a ratio of 0% or more.

The preceding washing water A flowing out from the outlet 444 to the lateral flow path 434 is joined to the transport flow B as indicated by an arrow A17. As described above, the predetermined washing time A that has passed through the delay flow path 428 has elapsed before the preceding washing water A that has flowed into the connection portion 446 flows out from the outlet 444 toward the lateral flow path 434. . Therefore, the preceding washing water A in the delay channel 428 reaches the lateral channel 434 of the diverter 426 at a timing after the elapse of a predetermined time after the preceding washing water A flows into the delay channel 428. Merged with the transport flow B. Therefore, a part of the preceding washing water A that has flowed into the delay flow path 428 is converted into the transport flow B.
As a result, the preceding washing water A that contributes little to the conveyance of the filth C can be added to the conveyance flow B, and the amount of water in the conveyance flow B of the filth C can be increased as shown by the arrow B11, and the filth C is conveyed. The transport performance can be improved. The arrow B11 indicates the transport flow B in which the preceding cleaning water A merges with the transport flow B and the flow rate and volume of the cleaning water are both increased.

  The filth C and the transport flow B flow toward the downstream drainage pipe section 430 on the downstream side, and are drained into the building pipe 22.

According to the flush toilet 401 according to the second embodiment of the present invention described above, at the time of washing, the diversion unit 426 causes at least a part of the washing water having a low flow velocity preceding the filth to flow into the delay flow path 428, thereby causing the delay flow. The path 428 joins the cleaning water in the delay channel to the transport flow that pushes away the filth that reaches the flow dividing section 426 at a later timing than when the cleaning water is introduced. At this time, since the delay channel 428 forms a channel in the side region E between the drain trap pipe 8 and the skirt portion 9, the delay channel 428 is formed in a relatively wide region on the side region E side. As a result, the bottom area of the delay channel 428 can be increased, and the washing water preceding the filth having a larger amount of water can be easily introduced into the delay channel 428. Therefore, according to the present invention, even when the amount of washing water is reduced due to water saving, the washing water preceding the filth having a larger amount of water is merged with the transport flow B that pushes the filth from the delay channel 428. The amount of water in the filth transport flow B can be increased, and the transport performance for transporting filth can be improved.
If the delay channel 428 is not formed in the side region E but only in the central region D, and the bottom area cannot be increased to the side, the internal space in the vertical direction of the delay channel 428 is assumed. It is conceivable to increase the amount of washing water flowing through the inside of the delay flow path. However, when the flow rate of the wash water flowing into the delay flow path 428 is low, the water level cannot rise and the amount of wash water flowing inside cannot be increased. Therefore, according to the present invention, the delay flow path 428 is formed in the side region E, and the bottom area is increased in the side region E, so that this delay flow can be more reliably performed regardless of the flow rate of the flowing wash water. The amount of washing water flowing inside the road can be increased. Therefore, according to the present invention, the washing water preceding the filth having a larger amount of water can be merged with the transport flow B that pushes the filth from the delay channel 428.

  Moreover, according to the flush toilet 401 by this embodiment, the connection part 446 changes the flow direction of the wash water which flowed in from the diversion part 426 toward the side area E side, so that the wash water preceding the filth can be changed. The flow rate of flowing through the expansion channel 448 can be reduced, and the time of flowing through the expansion channel 448 can be increased. Accordingly, it is possible to suppress the washing water that has flowed into the delay flow path 428 prior to the filth from flowing out into the diversion section 426 before the filth transport flow reaches the diversion section. Therefore, according to the present invention, the washing water preceding the filth having a larger amount of water can be reliably merged by the transport flow B that pushes the filth from the delay channel 428.

  Furthermore, according to the flush toilet 401 according to the present embodiment, the delay channel 428 is connected to the side region E by the expansion channel 448 provided in the side region E on one side and the other side of the side of the central region D. It is possible to increase the bottom area of the delay flow path 428 by expanding it to a wider area on the side. Therefore, according to the present invention, it is possible to easily allow the cleaning water preceding the filth having a larger amount of water to flow into the delay flow path 428.

  Furthermore, according to the flush toilet 401 according to the present embodiment, the extension flow path 448 extends in a direction along the direction connecting the inlet 8f and the outlet 8d of the drain trap pipe 8, so that the delay flow path 428 is disposed on the side. The bottom area of the delay flow path 428 can be further increased by expanding to a wider area on the side area E side. Therefore, according to the present invention, it is possible to easily allow the cleaning water preceding the filth having a larger amount of water to flow into the delay flow path 428.

  Furthermore, according to the flush toilet 401 according to the present embodiment, the drain socket 416 is a resin member that is separate from the toilet body 2, so that, for example, the manufacturing error is small compared to the case where the drain socket is made of ceramics. The delay channel 428 can be reliably provided in the side region E.

  Furthermore, according to the flush toilet 401 according to the present embodiment, the expansion channel 448 is provided only in the side region E. In the side region E, the arrangement of the extended flow path 448 is not easily restricted depending on the shape of the drain trap pipe 8 and the entrance position of the building pipe 22 connected to the drain socket. Therefore, according to the present invention, the expansion flow path 448 can be applied to flush toilets corresponding to various shapes of the drain trap pipe 8 and the entrance position of the building pipe 22.

Next, a flush toilet 501 according to a third embodiment of the present invention will be described with reference to FIGS. 15 to 17.
Regarding this embodiment, the same parts as those of the flush toilet 1 according to the first embodiment of the present invention described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the flush toilet 501 according to the third embodiment of the present invention, the guide portion 32 and the delay flow path 28 are disposed on the front side of the flow dividing portion 26 extending in the vertical direction of the flush toilet 1 according to the first embodiment of the present invention. Unlike the structure, the guide part 532 and the delay flow path 528 are arranged on the lateral side of the diversion part 526 that extends in the lateral direction, and the inlet 540 and the outlet 544 are separately arranged, and the detour flow path of the cleaning water is provided. It is a form that is formed.

The flush toilet 501 further includes a drain socket 516 that communicates with the drain trap pipe 8 and discharges filth to the downstream building piping 22.
The drain socket 516 includes an upstream drain pipe section 524, a diversion section 526, a delay flow path 528, and a downstream drain pipe section 530, generally in order from the upstream side to the downstream side. The drain socket 516 is a resin member separate from the toilet body 2.

  The upstream drainage pipe line part 524 is connected to the outlet 8d of the descending pipe line 8c of the drain trap pipe 8 at the upstream end thereof, and extends substantially parallel to the outlet 8d and downward in the vertical direction. The upstream drainage pipe line part 524 extends from the upper outside of the outlet 8d of the descending pipe line 8c to the lower bent part 524a.

  The downstream drainage pipe part 530 is provided on the downstream side of the diversion part 526 extending in the lateral direction. The downstream drainage pipe part 530 extends downward in the vertical direction from the downstream end of the flow dividing part 526. The downstream end of the downstream drainage pipe section 530 is connected to a building pipe 22 disposed below the floor F where the toilet body 2 is disposed.

  The diversion part 526 is provided on the downstream side of the upstream drain pipe part 524. The diversion part 526 is a linear transverse flow path extending in the transverse direction between the upstream drainage pipe part 524 and the downstream drainage pipe part 530. The diversion part 526 includes a guide part 532 that guides at least a part of the wash water having a relatively low flow rate supplied from the drain trap pipe 8 into the delay flow path 528 along the same. The diversion part 526 further includes a lateral flow path 434 that extends substantially in the horizontal direction from the upstream end to the downstream end of the diversion part 526 inside the guide part 532.

  The guide part 532 of the diversion part 526 is formed on the left and right side walls 534a with respect to the extending direction of the horizontal flow path 534, and between the horizontal flow path 534 and the delay flow path 528 of the diversion part 526. Is formed. The guide part 532 is disposed on the side of the lateral flow path 534. The guide portion 532 extends so as to slightly expand the flow path from the upstream end toward the downstream end, and is formed so that the downstream end is directed into the delay flow path 528. An inflow opening is formed between the lower end of the guide portion 532 and the downstream side surface 550 of the inlet 540 of the delay channel 528.

  As shown in FIG. 17, the guide portion 532 is formed on the left and right side portions of the side wall 534 a of the lateral flow path 534. A downstream drain pipe section 530 is connected to the bottom surface between the guide sections 532. The guide portion 532 of the flow dividing portion 526 forms a plane substantially on the extension line of the side wall 534a of the lateral flow path 534. Therefore, a guide surface 534 b that extends linearly in the horizontal direction toward the upstream end of the guide portion 532 is formed on the side wall 534 a of the horizontal flow path 534.

  As shown in FIGS. 16 and 17, the delay flow path 528 forms a flow path that branches from the vicinity of the front end of the horizontal flow path of the flow dividing portion 526 to the left and right sides. The delay channel 528 forms a channel in the side region E. The delay channel 528 is disposed on the side of the guide portion 532. The delay channel 528 is formed symmetrically with respect to the central axis in the front-rear direction of the toilet body 2. Although the delay flow path 528 is disposed on both the left and right sides with respect to the flow dividing section 526, the delay flow path 528 may be disposed on only one of the left and right sides with respect to the flow dividing section 526.

  The delay flow path 528 includes a connection part 546 connected to the flow dividing part 526 and an expansion flow path 548 extending from the connection part 546 to the side region E side.

  The delay channel 528 includes an inlet 540 that receives the wash water that has flowed in along the guide portion 532. The connecting portion 546 also functions as a storage chamber in which the wash water flowing in from the inlet 540 is allowed to flow inside to be temporarily stayed. The inlet 540 is located on an extension line on the downstream side of the guide portion 532 and on the downstream side of the lateral flow path 534. The delay channel 528 is further provided with an outlet 544 that is separate from the connection portion 546 and allows the wash water that has flowed into the delay channel 528 to flow out. Therefore, the connecting portion 546 of the delay channel 528 and the expansion channel 548 form a bypass channel from the inlet 540 to the outlet 544.

  The connecting portion 546 forms a bent flow path that changes the flow direction of the wash water flowing in from the flow dividing portion 526 toward the side region E on the side. Since the connecting portion 546 forms a bent flow path, the flow rate of the cleaning water flowing inside is reduced. The connection portion 546 can delay the timing at which the cleaning water flows through the drain socket 516 from the beginning by flowing the cleaning water into the connection portion 546. With such a structure, the delay flow path 528 delays the wash water that has flowed in along the guide portion 532 of the flow dividing portion 526 to the flow of the wash water that reaches the flow dividing portion 526 later than when the flow was introduced. Merge. The bottom surfaces of the connecting portion 546 and the extended flow channel 548 are formed in a flat shape, and form a downward gradient slightly toward the outlet 544.

  The expansion channel 548 includes a first expansion channel 548a provided in one side region E of the sides of the central region D and a second expansion channel 548b provided in the other side region E. I have. As described above, the expansion channel 548 is provided in the side region E on one side and the other side of the side of the central region D. The expansion channel 548 may be provided only in the side region E on one side or the other side of the side of the central region D. In this embodiment, the expansion channel 548 is provided only in the side region E, but the extension channel 548 may be provided in the central region D and the side region E. The expansion channel 548 extends in the direction along the drain trap pipe 8, that is, in the front-rear direction of the toilet body 2. The extension channel 548 extends from a position on the front side of the drain trap pipe 8 to a position near the lower side of the descending pipe 8 c of the drain trap pipe 8 in a side view. The extension channel 548 extends the delay channel 528 in the side region E. The extended flow path 548 extends the delay flow path 528 to a wider area in the side area E, and further increases the bottom area of the delay flow path 528. The expansion flow channel 548 increases the bottom area of the delay flow channel 528, so that even when the flow rate of the wash water flowing in is low, the wash water easily flows over a wide area of the delay flow channel 528. Compared to the case where the area is small, more washing water can be easily flown into the delay flow path. Therefore, by forming the delay flow path 528 in the side region E and increasing the bottom area in the side region E, the amount of wash water that flows through the delay flow path more reliably regardless of the flow rate of the wash water that flows in. Can be increased. The expansion channel 548 also functions as a storage chamber in which the cleaning water can be temporarily stayed. The extension flow path 548 is configured to decelerate the flow rate of the wash water that has flowed in since the wash water that has flowed in from the connection portion 546 flows in the expansion flow path 548 so as to be folded back downward in the descending pipe line 8c. .

  The outlet 544 is formed at a different position as an outlet part different from the inlet 540. The outlet 544 is formed at the downstream end of the expansion channel 548. The outlet 544 includes a first outlet 544a that forms the outlet of the first expansion channel 548a and a second outlet 544b that forms the outlet of the second expansion channel 548b. The outlet 544 is formed so as to open to the side wall 534 a of the lateral flow path 534 of the flow dividing portion 26. Further, the outlet 544 is located on the upstream side of the guide portion 532. The outlet 544 is configured to allow cleaning water to flow into the lateral flow path 534. Therefore, the delay channel 528 is a bypass channel type delay channel in which the inlet 540 and the outlet 544 are separately formed to form a bypass channel for the washing water. With such a structure, the delay flow path 528 joins the wash water introduced by the guide part 532 of the diversion part 526 to the flow of the wash water that reaches the diversion part 526 later than when it was introduced. In addition, the 1st expansion flow path 548a from the connection part 546 to the 1st exit 544a and the 2nd expansion flow path 548b from the connection part 546 to the 2nd exit 544b are formed independently.

  In the third embodiment described above, the drain socket 516, which is a drain pipe that communicates with the drain trap pipe 8 and discharges filth to the downstream building pipe 22, is a resin separate from the toilet body 2. It is a member. However, in the third embodiment, as a modification, the drainage pipe may be a single member formed integrally with the toilet body 2. The toilet body 2 and the drain pipe formed integrally are made of earthenware, but may be made of resin.

Next, the operation (action) of the flush toilet according to the third embodiment of the present invention will be described with reference to FIG. 1A, FIG. 1B, and FIG.
With reference to FIG. 1A, FIG. 1B, FIG. 17, the state when drainage by toilet flushing is performed in the flush toilet according to the third embodiment of the present invention will be described. In FIG. 1A, FIG. 1B and FIG. 17, the flow of the preceding washing water having a relatively low flow velocity preceding the filth C is indicated by the arrow A (A0, A1, A25 to A30), mainly flowing on the subsequent side of the filth C. The flow of the conveyance flow that pushes away the filth is indicated by arrows B (B0, B1, B15 to B20). Since the toilet main body 2 of the flush toilet 501 according to the third embodiment and the toilet main body 2 of the flush toilet 1 according to the first embodiment are substantially the same, the flow of washing water in the toilet main body 2 of the flush toilet 501 Is mainly described with reference to FIG. 1A and FIG. 1B, the same parts as those of the flush toilet 1 according to the first embodiment of the present invention described above are denoted by the same reference numerals, and the description thereof is as follows. Omitted.

First, a state in which washing water having a relatively low flow velocity flows prior to the flow of filth will be described.
As shown in FIG. 1A, at the start of toilet cleaning, the preceding washing water A having a relatively low flow velocity precedes the filth C flows on the leading side of the filth C as indicated by an arrow A0. The preceding washing water A having a relatively low flow rate has a weak water flow, and flows down along the side surface 8e on the ascending conduit 8b side of the descending conduit 8c, as indicated by an arrow A1.

  The preceding washing water A that has flowed down into the upstream drain pipe section 524 flows downward and flows into the diversion section 526. The preceding washing water A that has flowed into the flow dividing section 526 flows in the horizontal direction in the horizontal flow path 534 as indicated by an arrow A25. Since the preceding washing water A has a relatively low flow rate, it easily diffuses in the left-right direction in the lateral flow path 534. The preceding washing water A flows along the guide surface 534b from the side wall 534a of the lateral channel 534, and is guided from the guide surface 534b toward the delay channel 528 along the guide portion 532 as indicated by an arrow A26. The preceding washing water A is attracted to the guide part 532 by the Coanda effect, and the flow direction is deflected in the direction in which the guide part 532 extends. Thus, at least a part of the preceding washing water A flows into the delay channel 528 from the inlet 540 as indicated by the arrow A27. As shown by an arrow A28, the preceding washing water A that has flowed into the connection portion 546 flows toward the expansion channel 548 so as to change the direction from the connection portion 546 to the rear side by 180 degrees. Since the flow direction of the preceding washing water A is deflected rearward at the connection portion 546, the flow velocity is lower than the flow velocity at the time of inflow.

  Since the preceding cleaning water A flows through the connection portion 546 and the expansion channel 548, the preceding cleaning water A is delayed with respect to the flow of the cleaning water flowing through the lateral channel 534 that is the main channel. Since the connecting portion 546 and the expansion channel 548 form a bypass channel, the preceding washing water A flows through the expansion channel 548 and flows toward the outlet 544 of the expansion channel 548 as indicated by an arrow A29. . The preceding cleaning water A has a flow path distance that is increased by the amount flowing through the connection portion 546 and the expansion flow path 548, and is delayed with respect to the flow of the cleaning water flowing through the lateral flow path 534 that is the main flow path. The preceding washing water A joins the lateral flow path 534 from the outlet 544 as indicated by an arrow A30.

Next, the conveyance flow which pushes away filth will be described.
In FIG. 1A and FIG. 1B, as shown by an arrow B0, the conveyance flow B that acts to sweep away the filth C flows around the filth C and mainly the subsequent side of the filth C. As shown by an arrow B1, the main stream of the filth C and the transport flow B flows down along the side wall of the descending pipeline 8c opposite to the ascending pipeline 8b. As shown in FIG. 17, the main flow of the filth C and the transport flow B flowing down into the upstream drainage pipe section 524 flows downward and flows into the flow dividing section 526 as indicated by an arrow B15. The main flow of the filth C and the transport flow B flowing into the flow dividing section 526 flows in the horizontal direction in the horizontal flow path 534 as indicated by an arrow B16. The main stream of the filth C and the transport stream B flows down to the downstream drainage pipe section 530 due to the weight of the filth C. Part of the filth C and the conveyance flow B is guided to the delay flow path 528 along the guide portion 532 as indicated by an arrow B17. A part of the transport flow B flows from the connection portion 546 toward the expansion flow path 548 as indicated by an arrow B18, and further flows from the outlet 544 to the lateral flow path 534 as indicated by an arrow B19. .

In this way, a part of the preceding washing water A and the transport flow B flowing out from the outlet 544 to the lateral flow path 534 is merged with the main flow of the transport flow B. Therefore, the preceding washing water A reaches the lateral flow path 534 of the flow dividing section 526 at a timing after a predetermined time has elapsed after the preceding washing water A and the conveyance flow B flow into the delay flow path 528. Merged into stream B. Therefore, a part of the preceding washing water A and the transport flow B that has flowed into the delay flow path 528 is converted into the subsequent transport flow B.
As a result, the preceding cleaning water A that contributes little to the conveyance of the filth C can be added to the conveyance flow B, and the amount of water in the conveyance flow B of the filth C can be increased as indicated by the arrow B20, and the filth C is conveyed. The transport performance can be improved. An arrow B20 indicates the transport flow B in which the preceding cleaning water A merges with the transport flow B and the flow rate and volume of the cleaning water are both increased.

  The filth C and the transport flow B flow toward the downstream drainage pipe section 530 on the downstream side, and are drained into the building pipe 22.

According to the flush toilet 501 according to the third embodiment of the present invention described above, at the time of washing, the diverting unit 526 causes at least a part of the washing water having a low flow velocity preceding the filth to flow into the delay flow path 528, thereby causing the delay flow. The path 528 joins the cleaning water in the delay flow path to the transport flow that pushes away the filth that reaches the flow dividing section 526 at a later timing than when the cleaning water is introduced. At this time, since the delay flow path 528 forms a flow path in the side region E between the drain trap pipe 8 and the skirt portion 9, the delay flow path 528 is formed in a relatively wide region on the side region E side. It is possible to increase the bottom area of the delay channel 528, and it is possible to easily allow the cleaning water preceding the filth of a larger amount of water to flow into the delay channel 528. Therefore, according to the present invention, even when the amount of washing water is reduced due to water saving, the washing water preceding the filth having a larger amount of water is merged with the transport flow B that pushes the filth from the delay channel 528. The amount of water in the filth transport flow B can be increased, and the transport performance for transporting filth can be improved.
If the delay channel 528 is not formed in the side region E but only in the central region D and the bottom area cannot be increased to the side, the internal space in the vertical direction of the delay channel 528 It is conceivable to increase the amount of washing water flowing through the inside of the delay flow path. However, when the flow rate of the wash water flowing into the delay flow path 528 is low, the water level cannot rise and the amount of wash water flowing inside cannot be increased. Therefore, according to the present invention, the delay flow path 528 is formed in the side region E, and the bottom area is increased in the side region E, so that this delay flow can be more reliably performed regardless of the flow rate of the inflowing cleaning water. The amount of washing water flowing inside the road can be increased. Therefore, according to the present invention, the washing water preceding the filth having a larger amount of water can be merged with the transport flow B that pushes the filth from the delay channel 528.

  Moreover, according to the flush toilet 501 by this embodiment, the connection part 546 changes the flow direction of the wash water which flowed in from the diversion part 526 toward the side area E side, so that the wash water preceding the filth can be changed. It is possible to reduce the flow velocity flowing through the expansion channel 548 and increase the time for flowing through the expansion channel 548. Accordingly, it is possible to suppress the washing water that has flowed into the delay flow path 528 prior to the filth from flowing out into the diversion section 526 before the conveyance flow of the filth reaches the diversion section. Therefore, according to the present invention, the washing water preceding the filth having a larger amount of water can be reliably joined by the transport flow B that pushes the filth from the delay flow path 528.

  Further, according to the flush toilet 501 according to the present embodiment, the delay channel 528 is connected to the side region E by the expansion channel 548 provided in the side region E on one side and the other side of the side of the central region D. It is possible to increase the bottom area of the delay flow path 528 by expanding it to a wider area on the side. Therefore, according to the present invention, it is possible to facilitate the flow of the cleaning water preceding the filth having a larger amount of water into the delay flow paths 28, 128, 228, 428, and 528.

  Further, according to the flush toilet 501 according to the present embodiment, the extension flow path 548 extends in a direction along the direction connecting the inlet 8f and the outlet 8d of the drain trap pipe 8, so that the delay flow path 528 is disposed on the side. The bottom area of the delay flow path 528 can be further increased by expanding to a wider area on the side area E side. Therefore, according to the present invention, it is possible to make it easier for the washing water preceding the filth having a larger amount of water to flow into the delay flow path 528.

  Further, according to the flush toilet 501 according to the present embodiment, the state in which the flow of the washing water stops in the expansion channel 548 is relatively smaller than the case where the outlet 544 of the delay channel 528 is shared with the connection portion 546. Long lasting can be suppressed. As described above, the state in which the flow of the washing water stops in the expansion channel 548 continues for a relatively long time, so that it is possible to suppress the occurrence of a situation in which the waste flow cannot be joined. Therefore, according to the present invention, even when the amount of washing water for washing the toilet bowl is reduced due to water saving, the washing water preceding the filth having a larger amount of water is transferred to the transport flow that pushes the filth from the delay channel 528. The amount of water in the filth conveyance flow can be increased, and the conveyance performance for conveying the filth can be improved. Further, according to the present invention, it is possible to prevent the suspended filth in the washing water from sinking and remaining in the expansion flow channel 548 by stopping the flow of the washing water in the expansion flow channel 548.

  Further, according to the flush toilet 501 according to the present embodiment, the first expansion channel 548a from the connection part 546 to the first outlet 544a, the second expansion channel 548b from the connection part 546 to the second outlet 544b, Are formed independently. Thereby, according to this invention, it can suppress that a flow is disturb | confused by the flow of the washing water in the 1st expansion flow path 548a and the flow of the washing water in the 2nd expansion flow path 548b joining, It is possible to suppress the state where the flow of the washing water is stopped for a relatively long time.

  In addition, according to the flush toilet 501 according to the present embodiment, the drain socket 516 is a resin member that is separate from the toilet body 2, so that, for example, a manufacturing error is reduced compared to a case where the drain socket is made of ceramics. The delay flow path 528 can be reliably provided in the side region E.

  Moreover, according to the flush toilet 501 by this embodiment, the expansion flow path 548 is provided only in the side area | region E. FIG. In the side region E, the arrangement of the extended flow path 548 is less likely to be restricted according to the shape of the drain trap pipe 8 and the entrance position of the building pipe 22 connected to the drain socket. Therefore, according to the present invention, the expansion flow path 548 can be applied to flush toilets corresponding to various shapes of the drain trap pipe 8 and the entrance position of the building pipe 22.

The form for implementing this invention is not limited above, Still another modification can be applied. Even when the shape of the drain trap pipe of the toilet body and the position of the building piping are different, the diversion part and the delay channel of the drain socket of the flush toilet of each embodiment of the present invention can be applied.
FIG. 18A shows a drainage trap pipe that opens to the floor, and a building pipe that extends from the wall surface, as a flush toilet that can apply the diversion part and the delay flow path of the drainage socket of the flush toilet according to each embodiment of the present invention. FIG. 18B is a cross-sectional view showing a flush toilet equipped with a drain socket for connecting to the flush toilet, and FIG. 18B is a flush toilet to which a diversion part and a delay flow path of the drain socket of the flush toilet of each embodiment of the present invention can be applied. FIG. 18C is a cross-sectional view showing a flush toilet provided with a drainage socket connecting a drain trap pipe that opens to the wall and a building pipe extending from the wall surface as a toilet, and FIG. 18C is a flush toilet according to each embodiment of the present invention. As a flush toilet that can apply the diversion part and the delay flow path of the drain socket of the toilet, the drain socket that connects the drain trap pipe that opens to the wall and the building pipe that extends from the floor surface Is a cross-sectional view showing the example was flush toilet.

As shown to FIG. 18A, the drain socket 616A which connects the toilet bowl main body T and the building piping P may become a substantially L shape by side view.
In this case, the drain socket 616A communicates with the building piping P and communicates with the lateral region a1 extending in the lateral direction and the drain trap pipe outlet To of the toilet body T extending in the lateral direction a1 and vertically downward. And can be divided into a bent region a2.
As a modified example, in the drain socket 616A having such a shape, the flow dividing section 426 and the delay flow path 428 described in the second embodiment can be applied in the lateral region a1. As another modified example, in the drain socket 616A, the flow dividing section 26 and the delay flow paths 28, 228 of the first embodiment can be applied in the bent region a2.

As shown in FIG. 18B, the drain socket 616B that connects the toilet body T and the building pipe P may be a horizontal pipe that communicates the building pipe P and the drain trap conduit outlet To of the toilet body T that extends in the lateral direction. .
As a modified example, in the drain socket 616B having such a shape, the flow dividing section 426 and the delay flow path 428 described in the second embodiment can be applied to the horizontal pipe.

As shown in FIG. 18C, the drain socket 616C that connects the toilet main body T and the building pipe P may be substantially S-shaped in a side view.
In this case, the drain socket 616C has a substantially L-shaped first bent area c1 communicating with the drain trap pipe outlet To of the toilet body T opened in the horizontal direction, and the first bent area c1 in the vertical direction. A substantially L-shaped second bent region c2 having one end communicated and the other end extending in the horizontal direction, a lateral region c3 communicating with the second bent region, extending in the lateral direction, and communicated with the lateral region c3 And it can divide | segment into the 3rd bending area | region c4 connected with the building piping P extended in a perpendicular direction.
As a modification, in the drain socket 616C, the flow dividing portion 26 and the delay flow paths 28, 228 of the first embodiment can be applied in the first bent region c1 and the second bent region c2. As another modified example, in the drain socket 616C, the flow dividing section 426 and the delay flow path 428 described in the second embodiment can be applied in the lateral region c3. As yet another modification, in the drain socket 616C, the flow dividing section 526 and the delay flow path 528 of the third embodiment can be applied in the bent region c4.

DESCRIPTION OF SYMBOLS 1, 301, 401, 501 Flush toilet 2 Toilet body 4 Bowl part 6 Water conduit 8 Drain trap pipe 8a Inlet pipe 8b Ascending pipe 8c Down pipe 8d Outlet 8e Side face 9 Skirt part 10 Rim 12 Rim spout 14 Water storage section 16, 316, 416, 516 Drain socket 18 Wash water tank device 18a Inlet section 20 Wash water tank 20a Drain port 22 Building piping 24, 424, 524 Upstream drain pipe sections 26, 426, 526 Dividing section 28, 128, 228, 428, 528 Delay flow path 30, 130, 430, 530 Downstream drainage pipe section 32, 432, 532 Guide section 34 Vertical flow path 34a, 434a, 534a Side wall 34b, 434b, 534b Guide surface 36, 436 Notch 40, 440, 540 Inlet 44, 144, 244, 444, 544 Outlet 46, 146, 246, 4 46, 546 Connection portion 48, 148, 248, 448, 548 Expansion channel 50 Bottom surface 550 Downstream side surface 50a, 450a, 550a End portion 424a Bending portion 430a Bending portion 434 Lateral flow path 438 Connection portion 450 Downstream side surface 534 Lateral flow Road 538 Connection portion 616A Drain socket 616B Drain socket 616C Drain socket A Pre-wash water B Conveying flow C Waste F Floor P Building piping Z Vertical line Z2 Virtual line

Claims (11)

A flush toilet that is washed with washing water and discharges filth,
A toilet body comprising a bowl portion for receiving filth, a drain trap pipe extending from the lower portion of the bowl section, and a skirt provided to cover the bowl section and the drain trap pipe from the side,
A drainage conduit communicating with the drainage trap conduit and discharging the filth to the downstream building piping;
The drain line is
An upstream drainage pipe connected to the downstream side of the drain trap pipe,
A diversion part provided on the downstream side of the upstream drainage pipe part;
A downstream drainage pipe provided on the downstream side of the diversion part;
A delay flow path branched from the flow dividing section,
The area inside the skirt portion is the drain trap pipe as an area closer to the center than the width of the drain trap pipe in a direction orthogonal to the direction connecting the inlet and the outlet of the drain trap pipe in plan view. A central region extending in a direction connecting the inlet and the outlet, and a lateral region on the side of the central region,
The delay flow path forms a flow path in the lateral region, and joins the wash water that has flowed in from the diversion part to the flow of wash water that reaches the diversion part later than when it was introduced. toilet bowl. The delay channel is
A connecting portion connected to the flow dividing portion;
An expansion channel extending from the connection part to the side region side, and
The flush section according to claim 1, wherein the connection portion forms a bent flow path that changes a flow direction of the wash water flowing in from the diversion section toward the side area side flow path on a lateral side. Toilet bowl.   The flush toilet according to claim 2, wherein the expansion channel is provided in the side region on one side and the other side of the side of the central region.   The flush toilet according to claim 2 or 3, wherein the extension channel extends in a direction along a direction connecting the inlet and the outlet of the drain trap pipe.   The flush toilet according to claim 3 or 4, wherein the expansion channel extends to a position partially overlapping with the drain trap pipe in a side view. The diversion portion of the drainage pipe forms a vertical flow path extending in the vertical direction,
The flush toilet according to any one of claims 2 to 5, wherein the connection part of the delay flow path is connected to a rising pipe side of the drain trap pipe line in the vertical flow path of the diversion part. . The delay flow path includes an outlet part that is different from the connection part,
7. The delay channel according to any one of claims 2 to 6, wherein the wash water that has flowed in from the connection portion joins from the outlet portion the flow of wash water that reaches the diversion portion later than when it flows in. The flush toilet according to Item 1. The delay flow path includes an outlet part that is different from the connection part, and the delay flow path allows the wash water that has flowed in from the connection part to reach the diversion part later than when it flows in. Join the water flow from the outlet,
The expansion flow path includes a first expansion flow path provided in the side region on the one side and a second expansion flow path provided in the side region on the other side,
The outlet portion includes a first outlet portion that forms an outlet of the first expansion channel, and a second outlet portion that forms an outlet of the second expansion channel,
The said 1st expansion flow path from the said connection part to the said 1st exit part and the said 2nd expansion flow path from the said connection part to the said 2nd exit part are formed independently. The flush toilet described.   The flush toilet according to any one of claims 2 to 8, wherein the drain pipe is a resin member separate from the toilet body.   The flush toilet according to claim 9, wherein the expansion channel is provided only in the side region.   The downstream drainage pipe section includes a lateral flow path extending laterally to the position of the building pipe, and the connection section and the outlet section of the delay flow path are in the lateral direction of the downstream drain pipe section. The flush toilet according to claim 10, wherein the flush toilet is opened toward the diversion portion upstream of the flow path.

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