JP2014047571A - Flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flush toilet bowl capable of well discharging sewage or the like with a smaller amount of washing water.SOLUTION: The flush toilet bowl includes a toilet bowl part 10, and a toilet bowl drain passage 30 having an inflow port 31 opened in one of front and rear side face lower parts of the toilet bowl part 10. Herein, a water reservoir part is formed where washing water resides. A reserved water surface formed in the toilet bowl part 10 by the washing water residing in the water reservoir part has an approximately triangular shape using an end 43 which is provided on the side closer to the inflow port 31 than right and left ends 42A, 42B forming a maximum width in the horizontal direction of the toilet bowl part 10, namely, on the side closer to the inflow port 31 on or around a virtual perpendicular plane A extending in the longitudinal direction of the toilet bowl part 10, passing through the center of the inflow port 31, and the right and left ends 42A, 42B, as apexes, respectively.

Description

  The present invention relates to a flush toilet bowl.

  Patent document 1 is disclosing the conventional flush toilet bowl. This flush toilet includes a toilet bowl and a toilet drainage channel having an inflow opening that opens at the lower side of the rear side of the toilet bowl, and forms a reservoir part in which the wash water stays. This flush toilet bowl has an egg-shaped reservoir surface in the toilet bowl formed by the retention of the wash water in the reservoir. In this flush toilet, when flush water is discharged in one direction from the upper peripheral edge of the toilet bowl, a swirl flow that swirls in one direction in the toilet bowl is formed in a horizontal plan view. Since the reservoir surface is egg-shaped, the swirling flow can smoothly flow at least along the surface of the toilet bowl near the top and bottom of the reservoir surface, and the swirling force does not decay and collect floating filth in the center. it can. For this reason, this flush toilet can suppress the floating filth from spreading outside the swirling flow, and can be discharged from the inlet to the toilet drainage channel.

JP 2009-287331 A

  However, in the flush toilet of Patent Document 1, the wash water swirls in the toilet bowl in a horizontal plan view, and therefore, if the swirl force is strong, the wash water is difficult to flow toward the inlet of the toilet drainage channel. . In this case, since the flow of washing water flowing from the inlet into the toilet drainage channel becomes weak, the force that the washing water pushes filth etc. into the toilet drainage channel from the inlet becomes weak, and the filth etc. can be discharged well. It may not be possible. For this reason, in this flush toilet, it is necessary to increase the amount of washing water supplied to the toilet bowl and increase the momentum of the washing water flowing toward the inflow port of the toilet drainage channel in order to enhance the discharge capacity of filth etc. It is difficult to save water.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the flush toilet bowl which can discharge | emit waste etc. favorably with little washing water quantity.

The flush toilet of the present invention comprises a toilet bowl and a toilet drainage channel having an inflow opening opened at the lower part of one side of the toilet bowl before and after the toilet bowl, and forms a water reservoir in which flush water stays. A toilet,
On the side closer to the inflow port than the left and right end portions that are the maximum width in the left-right direction of the stool portion, the water surface in the stool portion formed by retaining wash water in the sewage portion is the flow It has a substantially triangular shape with the end on the side close to the inflow port provided near the virtual vertical plane extending in the front-rear direction of the toilet bowl portion passing through the center of the entrance and the left and right end portions as tops. It is characterized by.

  This flush toilet bowl has a substantially triangular shape in which the water surface in the toilet bowl is closer to the inlet than the left and right ends of the water surface, with the end near the inlet and the left and right ends as the top. It is. Since the reservoir surface in the toilet bowl is such a shape, at least along the surface of the toilet bowl near the top and bottom of the reservoir surface, from one of the left and right ends of the reservoir surface to the end near the inlet A flow of directed wash water can be formed. That is, this flush toilet bowl can supply flush water to the toilet bowl, and can form a wash water flow toward the inflow port even if a swirl flow that swirls the toilet bowl in a horizontal plane is formed. Therefore, the washing water can push the filth etc. well from the inflow port into the toilet drainage channel, and the filth etc. can be discharged well even with a small amount of washing water.

  Therefore, the flush toilet of the present invention can discharge filth and the like satisfactorily with a small amount of washing water.

It is a top view of the flush toilet bowl of an Example. It is sectional drawing of the flush toilet bowl of an Example.

  A preferred embodiment of the present invention will be described.

  The inflow port may open to the left and right center of the toilet bowl. In this case, since the toilet bowl part can be formed in a symmetrical shape, it becomes easy to form a swirling flow in which the washing water supplied to the toilet bowl part swirls in the toilet bowl part in a horizontal plane view. Moreover, if an inflow port is opened to the left-right center of a toilet bowl part, the flow toward an inflow port can be formed, without changing the flow direction of the wash water in a toilet bowl part largely. For this reason, the washing water flows smoothly toward the inlet, and the filth and the like can be pushed into the toilet drainage channel from the inlet, and the filth and the like can be discharged with a small amount of washing water.

  An angle formed on the center side of the reservoir surface by intersecting two virtual straight lines connecting the end portions on the side close to the inflow port from each of the left and right end portions of the reservoir surface may be an acute angle. In this case, in order for the flow from one of the left and right ends of the reservoir surface toward the end closer to the inlet along the surface of the toilet bowl portion to flow to the other side of the left and right ends, the flow direction is abrupt. It must be changed to (acute angle). For this reason, along the surface of the toilet bowl, most of the wash water that flows from one side to the end on the side closer to the inlet flows toward the inlet with little change in the flow direction. . Therefore, in this flush toilet, the washing water can push filth etc. well from the inflow port into the toilet drainage channel, and the filth etc. can be discharged well even with a small amount of washing water.

  The water storage surface has a substantially inverted triangular shape with the end on the side far from the inflow port and the left and right end portions on the side farther from the left and right end portions to the inflow port. It may have a substantially rhombus shape with the end on the side close to the inlet, the left and right ends, and the end on the far side as the top. In this case, it is possible to reduce the amount of cleaning water stored in the water reservoir while securing the front and rear, left and right dimensions of the water surface. For this reason, this flush toilet bowl can reduce the amount of washing water used for toilet flushing. In particular, in the case of a siphon type flush toilet, since the dimensions of the front, back, left and right of the water surface are regulated by JIS standards, making the water surface substantially diamond-shaped is effective as a means for saving water.

  Next, the Example which actualized the flush toilet bowl of this invention is described, referring drawings.

<Example>
The flush toilet bowl of an Example is a siphon flush toilet equipped with the toilet bowl part 10 and the toilet drainage channel 30, as shown in FIG.1 and FIG.2. This flush toilet has a mounting portion 50 for mounting a cleaning tank (not shown) at the rear of the upper surface. When this flush toilet bowl performs toilet flushing, the flushing water stored in the washing tank is discharged in one direction from the upper peripheral edge of the toilet bowl 10. The washing water that has flowed into the toilet bowl 10 forms a swirling flow that swirls counterclockwise in plan view in the toilet bowl 10.

  The toilet bowl 10 has an egg shape with a large curvature at the front and a small curvature at the rear in plan view. As shown in FIG. 2, the toilet bowl 10 is a gently inclined surface in which the surface of the peripheral edge 10 </ b> A descends inward. Moreover, the toilet bowl part 10 is a steep inclined surface where the surface of the part 10B which forms the upper and lower vicinity of the water storage surface 41 mentioned later continuously inside this peripheral part 10A is near perpendicular | vertical. Furthermore, the toilet bowl part 10 is continuous with the lower end part of this steeply inclined surface, and forms an introduction part 10C that is continuous with an inlet 31 described later of the toilet drainage channel 30.

  The toilet drainage channel 30 has an inflow port 31 that opens at the lower side of the rear side of the toilet bowl 10. As shown in FIG. 1, the inflow port 31 opens at the left and right center of the toilet bowl 10. As shown in FIG. 2, the toilet drainage channel 30 includes an ascending channel 30 </ b> A that rises from the inlet 31, a descending channel 30 </ b> B that descends continuously at the upper end that is the downstream end of the ascending channel 30 </ b> A, A horizontal pulling channel 30C that forms a discharge port 32 that opens to the rear continuously from the lower end that is the downstream end of the channel 30B. That is, the toilet drainage channel 30 forms a P trap. The discharge port 32 communicates with a drain pipe 70 drawn out to a toilet room where a flush toilet is installed. In the flush toilet, when toilet flushing is performed, a water film is formed at the boundary between the descending flow path 30B and the horizontal pulling flow path 30C by the washing water flowing down the descending flow path 30B, and the toilet drainage channel 30 is filled with water. Siphon action occurs. As described above, the flush toilet can discharge the filth and the like in the toilet bowl 10 from the discharge port 32 through the toilet drainage channel 30 using the siphon action.

  The flush toilet is in the ascending flow path 30A and in the toilet bowl 10, and the portion below the top 33 at the downstream end of the ascending flow path 30A is a reservoir 40 in which the wash water stays. As shown in FIGS. 1 and 2, the water surface formed in the toilet bowl 10 where the wash water stays in the reservoir 40 in a full water state is a reservoir surface 41 in the toilet bowl 10.

  As shown in FIG. 1, the water storage surface 41 has left and right end portions 42A and 42B that are the maximum width in the left and right direction of the toilet bowl 10, and end portions closer to the inflow port 31 than the left and right end portions 42A and 42B. And a second end 44 which is an end far from the inflow port 31.

  The first end portion 43 of the water storage surface 41 is provided on a virtual vertical plane A that passes through the center of the inflow port 31 and extends in the front-rear direction of the toilet bowl 10 (the paper surface corresponds to the virtual vertical surface in FIG. 2). It has been. That is, in this flush toilet, the inflow port 31 is opened at the left and right center of the toilet bowl 10, so the first end 43 is located at the left and right center of the toilet bowl 10.

  The second end portion 44 of the water storage surface 41 is also provided on the virtual vertical surface A, and is located at the left and right center of the toilet bowl 10. The left and right end portions 42 </ b> A and 42 </ b> B of the water storage surface 41 are provided at symmetrical positions with respect to the left and right center line of the toilet bowl 10.

  The water storage surface 41 has a substantially triangular shape with the first end portion 43 and the left and right end portions 42A and 42B as apexes on the side closer to the inlet 31 than the left and right end portions 42A and 42B. That is, the peripheral edge of the water storage surface 41 on the side closer to the inflow port 31 than the left and right end portions 42A and 42B is continuous in a curve at the first end portion 43, and connects the first end portion 43 from each of the left and right end portions 42A and 42B. It is formed by a curve slightly bulging outward from each of the two virtual straight lines X and Y, and the shape on the side closer to the inlet 31 than the left and right end portions 42A and 42B of the water storage surface 41 is substantially triangular. is there. The reservoir surface 41 is formed so that the angle α formed on the center side of the reservoir surface 41 by intersecting the two virtual straight lines X and Y becomes an acute angle.

  Since the water storage surface 41 has such a shape, at least along the surface of the toilet bowl 10 near the upper and lower sides of the water storage surface 41, the left and right end portions (42 </ b> A) of the water storage surface 41 change to the first end portion 43. Directed flow can be formed. That is, this flush toilet bowl supplies flush water to the toilet bowl 10, and even if a swirling flow that turns counterclockwise in the horizontal plane view is formed in the toilet bowl 10, the flush water toward the inlet 31 is formed. Therefore, the washing water can push the filth etc. well from the inlet 31 into the toilet drainage channel 30, and the filth etc. can be discharged well even with a small amount of washing water.

  Therefore, the flush toilet of the embodiment can discharge filth and the like satisfactorily with a small amount of washing water.

  Moreover, since the inflow port 31 is opening in the left-right center of the toilet bowl part 10, the toilet bowl part 10 can be formed in a left-right symmetric shape. For this reason, it becomes easy to form the swirling flow in which the wash water supplied to the toilet bowl 10 rotates in the toilet bowl 10 in a horizontal plane view. Moreover, the flow toward the inflow port 31 can be formed without greatly changing the flow direction of the swirl flow. For this reason, the washing water flows smoothly toward the inlet 31 and the filth can be pushed into the toilet drainage channel 30 from the inlet 31 well, and the filth and the like can be discharged well even with a small amount of washing water. it can.

  Furthermore, since the reservoir surface 41 is formed so that the angle α formed on the center side of the reservoir surface 41 by intersecting the two virtual straight lines X and Y is an acute angle, the reservoir surface 41 is formed along the surface of the toilet bowl 10. In order for the flow from one of the left and right end portions (42A) of the water storage surface 41 to the first end portion 43 to flow to the other 42B side of the left and right end portions, the flow direction must be changed suddenly (acute angle). Don't be. For this reason, along the surface of the toilet bowl 10, most of the wash water flowing from one (42 </ b> A) toward the first end 43 on the left and right ends of the reservoir surface 41 is directed to the inlet 31 with little change in the flow direction. It flows toward. Therefore, in this flush toilet, the washing water can push the filth etc. well from the inflow port 31 into the toilet drainage passage 30, and the filth etc. can be discharged well even with a small amount of washing water.

  The water storage surface 41 has a substantially inverted triangular shape with the second end portion 44 and the left and right end portions 42A and 42B as tops on the side farther from the left and right end portions 42A and 42B to the inlet 31. That is, the peripheral edge of the water storage surface 41 on the side farther from the left and right ends 42A and 42B to the inflow port 31 continues in a curve at the second end 44, and connects the second end 44 from each of the left and right ends 42A and 42B. It is formed by a curve that swells slightly outward from the two virtual straight lines, and the shape on the side farther from the left and right end portions 42A, 42B of the water storage surface 41 to the inflow port 31 is a substantially inverted triangular shape.

  The accumulated water surface 41 has a generally rhombus shape with the first end portion 43, the left and right end portions 42A and 42B, and the second end portion 44 as top portions. Since the water storage surface 41 has such a shape, the amount of cleaning water stored in the water storage unit 40 can be reduced while securing the front and rear, left and right dimensions of the water storage surface 41. For this reason, this flush toilet bowl can reduce the amount of washing water used for toilet flushing. In particular, since the siphon type flush toilet has the front and rear, left and right dimensions of the water storage surface 41 regulated by the JIS standard, making the water storage surface 41 substantially diamond-shaped is effective as a means for saving water.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the embodiment, the accumulated water surface is formed in a substantially rhombus shape as a whole, but the accumulated water surface on the side farther from the left and right end portions to the inflow port is not a substantially inverted triangular shape, and may be a circular shape, an elliptical shape, etc. Good.
(2) In the embodiment, the inflow port is opened at the left and right center of the toilet bowl, but may be opened at a position biased to either the left or right.
(3) In the example, the angle formed on the center side of the water surface by intersecting the two virtual straight lines connecting the first end and the left and right ends was an acute angle. It may be obtuse.
(4) In the embodiment, the inflow port is opened in the lower side surface on the rear side of the toilet bowl, but the inflow port may be opened in the lower side surface on the front side of the toilet bowl.
(5) In the embodiment, the siphon flush toilet is used, but a flush flush toilet other than the siphon may be used.
(6) In the embodiment, the toilet drainage channel is a flush toilet with a P trap, but it may be a flush toilet with an S trap.
(7) In the embodiment, the first end and the second end are provided on the virtual vertical plane, but if the first end and the second end are within the lateral width of the inflow port, You may provide in the position shifted | deviated to the left-right direction.
(8) In the embodiment, the surface of the stool part of the portion forming the vicinity of the upper and lower sides of the stored water surface is formed with a steep inclined surface close to the vertical, but it may not be a steep inclined surface. In this case, if the reservoir is formed in a substantially triangular shape on the side closer to the inlet than the left and right ends of the reservoir, the surface of the toilet bowl is formed to have substantially the same slope. Also good.

DESCRIPTION OF SYMBOLS 10 ... Toilet bowl part 30 ... Toilet drain channel 31 ... Inflow port 40 ... Reservoir part 41 ... Reservoir surface 42A, 42B ... Left-right end part 43 ... 1st end part (end part near the inflow port)
44 ... 2nd end (end on the side far from the inlet)
A ... Virtual vertical plane X, Y ... Virtual straight line

Claims (4)

A flush toilet comprising a toilet bowl and a toilet drainage channel having an inflow opening opened at the lower side of one side before and after the toilet bowl, and forming a reservoir part in which flush water stays,
On the side closer to the inflow port than the left and right end portions that are the maximum width in the left-right direction of the stool portion, the water surface in the stool portion formed by retaining wash water in the sewage portion is the flow It has a substantially triangular shape with the end on the side close to the inflow port provided near the virtual vertical plane extending in the front-rear direction of the toilet bowl portion passing through the center of the entrance and the left and right end portions as tops. Featuring a flush toilet.   The flush toilet according to claim 1, wherein the inflow opening is opened at a center of the left and right of the toilet bowl.   An angle formed on the center side of the water surface by intersecting two virtual straight lines connecting the end portions on the side close to the inflow port from the left and right end portions of the water surface is an acute angle. The flush toilet according to claim 1 or 2.   The water storage surface has a substantially inverted triangular shape with the end on the side far from the inflow port and the left and right end portions on the side farther from the left and right end portions to the inflow port. The flush toilet according to any one of claims 1 to 3, wherein the toilet bowl has a substantially rhombus shape with an end portion closer to the inflow port, the left and right end portions, and an end portion on the far side as a top portion.

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