TW201309875A - Flush toilet - Google Patents

Abstract

The present invention provides a flush toilet which can prevent the flush water flowing from through the rim portion from spilling out of the toilet. The flush toilet of the present invention comprises: a bowl-shaped waste receiving surface (14), a rim portion (16) formed on the top edge portion and having an internal periphery (17) erected toward the vertical direction, a bowl portion (8) of the shelf portion (18) formed between the rim portion and the waste receiving surface, a rim water spouting port (26) used to spout flush water on the shelf portion of the bowl portion to form a swirl flow (f1), and a water conduit (10d) used for supplying the flush water to the rim water spouting port. A rim water spouting port is formed near the front end portion (16a) in the front region (F), and the curvature radius ρ3of the rear region (R) of the rim portion is larger than the curvature radius ρ1of the front end of the front region of the rim portion, the front region (F) and the rear region (R) are horizontally symmetric. The flush water spouted from the rim water spouting port will swirl toward the back rear side region after flowing through the front end portion of the front side region of the rim portion.

Description

Flush toilet

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to flush toilets, and more particularly to flush toilets that flush toilets and discharge dirt using washing water supplied from a source of washing water.

A conventionally known flush toilet that flushes a toilet and discharges dirt is formed in the inner periphery of the rim portion of the upper edge of the bowl portion of the flush toilet as described in Patent Document 1, and is formed vertically or toward The shape of the outer side is expanded from the rim spout formed on the rear side of the rim portion, and the washing water is discharged in the horizontal direction to form a swirling flow, and is retained from the jet spout provided at the lower end of the bowl portion toward the drain. The elbow spits water to create a siphon effect, and the dirt is discharged.

Further, another known flush toilet, as described in Patent Document 2, is a front side field and a rear side field in the edge portion of the shape in which the upper edge of the bowl portion of the toilet is expanded outward. Each of the circular arc shapes having the same curvature radius and having a certain radius of curvature is formed in the vicinity of the side portion from the side portion formed between the water discharge port located on the rear side of the toilet and the front side of the rim portion The front side of the rim portion is provided with a shed reflexed portion that protrudes toward the inside of the toilet to prevent the washing water from splashing to the outside of the toilet.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2005-98003

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2007-169964

However, in the flush toilet described in Patent Document 1, the inner periphery of the rim portion formed on the upper edge of the bowl portion is formed to extend vertically or outwardly, and in the entire circumference of the inner peripheral surface of the rim portion, There is a place where the radius of curvature of the inner peripheral surface of the rim portion is changed. Therefore, the problem is that the washing water spouted from the rim spout is swirled along one side of the rim portion. As it flows, it may cross the edge of the edge and splash to the outside of the toilet.

Further, in the flush toilet described in the above Patent Document 2, the flow of the washing water discharged from the spouting port on the rear side of the toilet first passes through the arc-shaped front side region of the rim portion, and then from the linear shape. When the side portion is moved to the arc-shaped rear side region, there is a possibility that the rail along the rim portion cannot smoothly move along the trajectory of the water guide, and in the rear side of the rim portion, the lead is substantially lead-oriented. The shape is erected in the vertical direction, but the above-mentioned shed reflexing portion is not provided, so there is a problem that the washing water may splash to the outside of the toilet.

Accordingly, the present invention has been made in order to solve the above problems of the prior art, and an object thereof is to provide a flush toilet which prevents splashing of water flowing through the rim portion to the outside of the toilet.

In order to achieve the above object, a flush toilet according to the present invention is a flush toilet that flushes a toilet with a washing water supplied from a washing water source to discharge dirt, and is characterized in that it has a dirt receiving surface having a basin shape. a rim portion formed on the upper edge portion and having an inner peripheral surface that is substantially erected in a vertical direction, and a shed portion formed between the rim portion and the dirt receiving surface; and an inlet thereof is connected a drainage path for discharging the dirt below the bowl portion; a water discharge portion for discharging the washing water to the shed portion of the bowl portion to form a swirling flow; and a water guiding path for supplying the washing water to the spouting portion The water discharge portion is formed in the vicinity of the front end in the front side region of the rim portion, and the rear side region of the rim portion is larger in radius of curvature than the front end portion of the front side region of the rim portion. The water spouting portion is formed to have a substantially constant radius of curvature, and the water spouting portion discharges water toward the front, and passes through the front end in the front side region of the rim portion to form a swirling flow that flows to the rear side region of the rim portion.

In the present invention, the washing water that is discharged from the spouting portion in the vicinity of the front end in the front side of the rim portion passes through the front end in the front side region of the rim portion. The water potential of the washing water that is spouted is smoothly flowed toward the rear side field having a larger radius of curvature than the front end of the rim portion, and the rear side field of the rim portion is substantially symmetrical. The radius of curvature is formed so that the water potential of the washing water that is discharged is not reduced, and the centrifugal force acting on the washing water can be used to swirl the washing water. As a result, according to the present invention, even if the inner peripheral surface of the rim portion is substantially erected in the vertical direction, it is possible to prevent the washing water flowing through the rim portion from splashing to the outside of the toilet bowl, and the pot can be made stronger than the water potential. The large area within the department is rinsed out.

In a preferred aspect of the present invention, the rim portion of the bowl portion is formed in the front side region, and has a radius of curvature larger than a radius of curvature of the rear side region and is adjacent to the front end portion. field of.

In the present invention of such a configuration, since the rim portion of the bowl portion is in the front side region, there is a region formed by a radius of curvature larger than the radius of curvature of the region on the back side, which is close to the vicinity of the front end. Therefore, the washing water that has passed through the front end of the rim portion after being discharged from the water spouting portion flows in a region close to the front end in the front side region of the rim portion of the bowl portion while maintaining a relatively strong water potential. . This washing water flows through a region near the front end in the front side region of the rim portion which is formed by a radius of curvature larger than the radius of curvature of the rear side region of the rim portion, and therefore, on the one hand, The strong water potential of the washing water in the front side of the rim portion is maintained, and the stable side can smoothly flow through the rear side of the rim portion. Therefore, even if the inner peripheral surface of the rim portion is substantially lead-oriented The shape that is erected in the vertical direction can prevent the washing water flowing through the rim portion from splashing to the outside of the toilet.

In a preferred aspect of the present invention, the front end in the front side region of the rim portion is formed by a minimum radius of curvature of the entire circumference of the rim portion, and the spout portion is adjacent to the rim portion. Any of the left and right sides of the front end, and is formed in a portion that changes from a large radius of curvature to a small radius of curvature.

In the present invention of such a configuration, the washing water that is spouted from the jetting portion toward the front end in the front side of the rim portion with a strong water potential is passed in front of the rim portion formed by the minimum radius of curvature. The moderate energy loss occurring at the front end in the side field, the water potential is moderately suppressed, so that the water potential of the washing water is prevented from splashing to the outside of the toilet.

In a preferred aspect of the present invention, the edge portion of the bowl portion is formed to protrude inward from the water jet portion from the water jet portion to the vicinity of the front end portion in the front side region of the edge portion. Overhang shape.

In the present invention of the above-described configuration, the upper edge portion of the portion in the front side region of the rim portion having the smallest radius of curvature from the jetting portion is particularly likely to occur. In the case of the overhanging shape of the inner side, the water is splashed in the front end of the front side of the rim portion. The upper edge portion of the overhanging shape of the middle edge portion will be hit, and therefore, the splash of water can be prevented from splashing to the outside of the toilet bowl.

According to the flush toilet of the present invention, it is possible to prevent the washing water flowing through the rim portion from splashing to the outside of the toilet.

A flush toilet according to an embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a schematic perspective view showing a toilet seat of a flush toilet according to an embodiment of the present invention.

As shown in Fig. 1, a flush toilet 1 according to an embodiment of the present invention is a so-called "wash-off" flushing which flushes dirt by the flow of water generated by the drop of water in the bowl. The toilet is provided with a toilet body 2 made of a ceramics, a toilet cover 4 for covering a toilet seat (not shown) disposed on the upper surface of the toilet body 2, and a toilet cover 4 attached to the rear of the toilet body 2 for washing the toilet. The washing water source for storing water and storing the water to the toilet body 2 is a gravity water supply type water storage tank 6.

In addition, the washing water source for supplying the washing water to the toilet main body 2 is not limited to the water tank type washing water source of the gravity water supply type water storage tank 6 shown in the present embodiment, and for example, direct use of tap water may be employed. The tap water direct pressure type, the flush valve type of the water supply pressure, and the pumping pressure are used to supply the washing water.

Fig. 2 is a side cross-sectional view showing a state in which a toilet seat and a toilet lid are omitted in a flush toilet according to an embodiment of the present invention. Fig. 3 is a plan view showing a flush toilet according to an embodiment of the present invention.

As shown in FIGS. 2 and 3, the bowl portion 8 is formed on the front upper portion of the toilet body 2.

Further, a water conduit 10 is formed in the upper rear portion of the toilet body 2 to discharge the washing water supplied from the water storage tank 6 to the bowl portion 8.

Further, below the bowl portion 8, a drain passage for discharging the dirt in the bowl portion 8, that is, the drain retaining bend conduit 12 is formed.

The bowl portion 8 includes a bowl-shaped dirt receiving surface 14 , a rim portion 16 formed along the upper edge portion of the bowl portion 8 , and a shed portion 18 formed between the dirt receiving surface 14 and the rim portion 16 .

Further, the bowl portion 8 includes a concave portion 20 that is formed in a lower area of the dirt receiving surface 14 and that is connected to the drainage retention curved line 12, and the concave portion 20 is provided with a bottom surface 20a and a bottom surface 20a for connecting thereto. The wall surface 20b of the lower edge portion 14a of the dirt receiving surface 14.

Further, the center line A1 (refer to FIG. 3) that divides the left and right direction of the bowl portion 8 into two halves (see FIG. 3) is viewed from the front side of the toilet body 2, and the jet water spout is formed on the left side wall surface 20b of the recess portion 20. 22, the jet water spout 22 is connected to the jet water conduit 10b branched from the common water conduit 10a of the water conduit 10 (described in detail later), and the main flow of the washing water discharged from the jet spout 22 is in the recess 20 Circling inside. In this way, when the washing water is discharged from the jetting spout 22, the swirling flow f4 of the jetting water can be used, so that the water in the recess 20 of the bowl portion 8 is not easily diffused to the outside, and the suspended dirt can be concentrated. Nearly the center of the accumulated water in the recess 20 is reliably discharged. Further, it is possible to more effectively suppress the spouting of the washing water from the inside of the recessed portion 20 of the bowl portion 8 and the swirling flow from the rim spouting port 26, which will be described later, to the edge of the bowl portion 8 The splash generated by the impact.

Further, the inlet 12a of the drain retaining and bending duct 12 is opened at the lower side of the recess 20 of the dirt receiving surface 14 of the bowl portion 8, and the ascending passage 12b extends rearward from the inlet 12a. The descending path 12c is connected to the descending path 12c, and the lower end of the descending path 12c is connected to a discharge pipe (not shown) under the floor via the drain sleeve 24.

Further, in the flush toilet 1 of the present embodiment, the lower drain end of the downflow path 12c of the drain retention bend line 12 is connected to the underfloor drain type flush toilet (not shown). For example, the present invention is not limited to this embodiment, and may be applied to a floor drain type rush which is disposed on the rear wall side of the flush toilet and connected to the discharge pipe on the floor at the end of the down road 12c. Water toilet.

Next, the water conduit 10 of the flush toilet 1 will be described in detail with reference to Figs. 2 to 8 .

4 to 7 are cross-sectional views taken along line IV-IV, line VV, line VI-VI, and line VII-VII of Fig. 3, respectively, and Fig. 8 shows the present invention. An overall perspective view of a water conduit of a flush toilet of an embodiment.

As shown in Fig. 2 to Fig. 8, the water conduit 10 includes a common water conduit 10a extending from the inlet portion 10c of the drain port 6a connected to the water storage tank 6 to the vicinity of the back side of the bowl portion 8, and The injection water conduit 10b and the rim water conduit 10d are branched near the back side of the bowl portion 8 of the common water conduit 10.

The edge water conduit 10d is branched from the common water conduit 10a in the vicinity of the back side of the bowl portion 8 along the center line A1 for dividing the left and right direction of the bowl portion 8 into two halves (please refer to FIG. 3). When viewed from the front side of the toilet body 2, the inside of the rim portion 16 on the left side extends forward, and extends until the front side of the rim portion 16 in the field F is viewed from the front side of the toilet body 2. At the time, the single edge spouting port 26 is disposed on the left side (described later in detail).

The jet water conduit 10b is branched from the common water conduit 10a in the vicinity of the back side of the bowl portion 8, and is divided into two center line A1 (see FIG. 3) for dividing the left and right direction of the bowl portion 8 from the toilet body 2 When viewed from the front side, the front side is extended to the outside of the left side wall surface 20b of the recessed portion 20 of the bowl portion 8, and extends to reach the jet spouting port 22 formed on the left side wall surface 20b of the recessed portion 20. When the bowl portion 8 is divided into two halves in the front-rear direction and the left-right direction, the spout portion 22 is located on the rear side of the rim spouting port 26 of the rim portion 16, and when the bowl portion 8 is viewed from the front, The configuration is on the left side.

Further, the rim spouting port 26 and the jet spouting port 22 may be formed on the same side of either one of the right and left sides of the bowl portion 8.

In addition, the rim water spouting port 26 is formed on the front side of the jet water spouting port 22, and the swirling flow of the washing water (hereinafter referred to as "oblique swirling flow f4") which is discharged from the jet spouting port 22 is required to be taken from the basin. When the inside of the recessed portion 20 of the portion 8 is splashed outward, it may be pressed by the water potential of the swirling flow of the washing water (hereinafter referred to as "swirl flow f5") which is discharged from the rim spouting port 26.

In addition, before the rinsing water is discharged from the common water conduit 10a via the rim water conduit 10d to the rim water spout 26, the water is first discharged from the common water conduit 10a via the jet water conduit 10b. The method of setting the timing of the water discharge by setting the washing water rate to the jetting water outlet 22 to start the jetting water sampling is to set the path length L1 of the rim water guiding passage 10d to be larger than the path length L2 of the jet water guiding passage 10b. long. According to such a setting method, the air existing in the common water conduit 10a can be discharged from the jet water spout 22 via the jet water conduit 10b at the start of washing, and can be reduced by a simple structure: The air discharged from the rim spout 26 when the spout 26 starts to spout. Further, it is possible to prevent the air flowing into the rim water conduit 10d from the common water conduit 10a together with the washing water from being compressed in the rim water conduit 10d, so that the discharge sound and the water spout generated when the rim spout 26 is discharged from the rim spout 26 Splashing prevents the splash from splashing onto the outside of the toilet 1.

Further, even if the compressed air in the jet water passage 10b is discharged from the jet spout 22 together with the washing water, splashing occurs, and the jet spout 22 is located below the tub portion 8, that is, located The side wall surface 20b of the recess 20 between the dirt receiving surface 14 and the drain retaining curved pipe 12 can prevent splashing of water to the outside of the toilet 1.

In addition, even if the air existing in the common water conduit 10a at the start of the washing is mixed into the washing water flowing from the common water conduit 10a to the rim water conduit 10d, the rim spout 26 is formed in the basin. In the front side field F of the eighth side, the rim water passage 10d belongs to a long path extending from the vicinity of the back side of the bowl portion 8 of the common water conduit 10a to the rim spouting port 26, so that it flows through the rim guide. During the process in the water passage 10d, the air has become in a very broken state, so that the spitting sound and the splash of water generated when the water is spouted from the rim spouting port 26 are also suppressed.

Further, in the present embodiment, as an example of means for starting the jetting of water before starting the water spouting, the path length L1 of the rim water guiding passage 10d is set to be larger than the jet water guiding path. The path length L2 of 10b is longer. However, it is not limited to this form, and the flow velocity and volume in the rim water conduit and the jet water conduit may be adjusted separately: at the rim Before the spit water starts, let the spray spit start.

Further, as means for discharging the air in the common water conduit 10a, a pipe member that can connect and connect the common water conduit 10a and the recess 20 may be provided instead of the jet water conduit 10b.

Next, the rim portion 16, the shed portion 18, and the rim spouting port 26 of the bowl portion 8 of the flush toilet 1 will be described in detail with reference to Figs. 3, 5, 7 and 9 to 11.

FIG. 9 is an enlarged perspective view of the rim spouting port in the front side of the bowl of the flush toilet according to the embodiment of the present invention, viewed obliquely from the rear side, and FIG. 10 is a view showing the third drawing. An enlarged plan view of an enlarged portion of a front portion of a flush toilet according to an embodiment of the present invention is provided. FIG. 11 is an enlarged view of a rim spout portion of a flush toilet according to an embodiment of the present invention shown in FIG. Partially enlarged perspective view.

As shown in FIGS. 3 and 10, the bowl portion 8 is provided with a center line A2 extending in the left-right direction of the bowl portion 8 (refer to FIG. 3) to divide the bowl portion 8 in the front-rear direction. The front side field F and the rear side field R of the two halves.

In addition, the front side portion F of the inner peripheral surface 17 of the center line A1 and the rim portion 16 is disposed symmetrically with respect to the center line A1 and the inner peripheral surface 17 of the rim portion 8 and includes a front end portion. The field F1 of 16a and the field F2 on the rear side of the field F1 and the field F3 on the rear side of the field F2.

The front end portion 16a in the front side field F1 of the rim portion 16 has the smallest curvature radius ρ1 among the entire circumference of the rim portion 16, and the rim spouting port 26 is formed on the front side of the rim portion 16 in the field F1. The inner end portion 16a is located further in the front side field F2 on the rear side, and the water spouting of the washing water can be performed toward the front end portion 16a.

That is, the rim spouting port 26 is disposed in the vicinity of the smallest portion of the radius of curvature of the front end portion 16a of the rim portion 16, and the spouting water can be made from the rim spouting port 26 by discharging the washing water toward the smallest portion of the radius of curvature. The vector of the jetting water in the jetted water and the water potential tend to be stable, and can be swirled toward the rear side field R of the rim portion 16 after passing through the front end portion 16a of the rim portion 16 while maintaining a strong water potential. . In this way, the rear side field R of the bowl 8 which is easily stained can be surely rinsed, and the washing water after passing through the rear side field R is still swirled in the state of retaining the water potential, thereby preventing: It is impossible to revolve to the vicinity of the front end portion 16a of the rim portion 16, and thus the occurrence of poor washing is caused.

In addition, after the washing water discharged from the rim spouting port 26 passes through the minimum radius of curvature of the tip end portion 16a of the rim portion 16, the first lap is rotated along the rim portion 16, but this is passed. When the radius of curvature of the rim portion 16 is the smallest, the flow of the washing water flowing down from the rim spouting port 26 to the shed portion 18 is suppressed by the centrifugal force acting on the outer side of the rim portion 16, thereby suppressing: The impact of the swirling flow on the shed portion 18 immediately after the first revolution of the first lap has been completed.

Further, the edge spout 26 is formed on the front end portion 16a in the front side field F1 with respect to the rim portion 16 of the bowl portion 8 so as to be adjacent to the left side when viewed from the front side of the toilet main body 2, and is oriented from the rear side. The front curvature radius ρ2 is a portion that changes from a large radius of curvature to a small radius of curvature, that is, in the front side field F2. In this manner, the washing water discharged from the rim spouting port 26 is in a maintained state in which the strong water potential is maintained, and immediately reaches the front end portion 16a of the rim portion 16, and then can be made toward the rear side region R of the rim portion 16. Since it is swirled, it is possible to prevent the washing water from being swirled at the front end portion 16a of the rim portion 16 having the smallest radius of curvature, resulting in poor washing. Further, the washing water which is discharged from the rim spouting port 26 toward the front end portion 16a in the front side field F1 of the rim portion 16 with a strong water potential is passed in front of the rim portion 16 formed by the minimum curvature radius ρ1. The moderate energy loss generated at the front end in the side field F1 and the water potential are moderately suppressed, so that the water potential of the washing water is prevented from being too strong and splashed toward the outside of the toilet.

Further, most of the rear side field R of the shed portion 18 of the bowl portion 8 is formed as a part (circular arc shape) having a perfect radius (curvature radius ρ3). In this way, in most of the rear side field R of the rim portion 16 of the bowl portion 8, the curvature radius ρ3 (the radius of the perfect circle) does not change, so that the washing water can be prevented from passing behind the rim portion 16. The energy loss of the washing water in the side field R allows the washing water to be swirled more reliably, and can maintain the relatively strong water potential and swirl back to the rear side field R of the rim portion 16, so that the basin is easily contaminated. The rear side field R of 8 can also be reliably washed. Further, by forming a part of the right side of the region R of the rim portion 16 of the bowl portion 8 to a predetermined radius (curvature radius ρ3), when the user views from the front obliquely upward, the most conspicuous Most of the rear side field R of the rim portion 16 of the bowl portion 8 is a part of a perfect circle forming a predetermined radius (curvature radius ρ3), so that the overall appearance of the bowl portion 8 can be improved.

The rim portion 16 of the bowl portion 8 is provided in the front side field F by a curvature radius ρ4 (ρ4=ρ2>ρ3) which is equal to the curvature radius ρ2 and larger than the curvature radius ρ3 of the rear side region R. In the front side region F3 formed, this front side region F3 is disposed in the vicinity of the front end portion 16a in the front side region F1, and is disposed between the front side region F2 and the rear side region R. In this manner, the washing water that has been discharged from the rim spout 26 and passed through the front end portion 16a of the rim portion 16 passes through the front end portion 16a in the front side field F1 of the rim portion 16 of the bowl portion 8 The nearby area F2 flows through the field F3 in a state of maintaining a relatively strong water potential. This washing water flows through the front side field F3 of the rim portion 16 formed by the curvature radius ρ4 larger than the curvature radius ρ3 of the rear side region R of the rim portion 16, so that it can be maintained The relatively strong water potential of the washing water from the front side field F1, F2 from the rim portion 16 on the front side of the front side field F3 is maintained in a stable state, and flows smoothly through the rim portion 16. In the rear side region R, even if the inner peripheral surface 17 of the rim portion 16 is substantially erected in the vertical direction, it is possible to prevent the washing water flowing through the rim portion 16 from splashing toward the outside of the toilet 1.

In addition, in the present embodiment, the curvature radius ρ1 of the front side field F1 of the rim portion 16 is set to be smaller than the curvature radius ρ3 of the rear side field R of the rim portion 16 to explain However, the shape is not limited to this, and the curvature radius ρ1 of the front side field F1 of the rim portion 16 may be equal to the curvature radius ρ3 of the rear side field R of the rim portion 16. Alternatively, at least one of the curvature radii ρ1, ρ2, ρ4 of each of the front side regions F1, F2, and F3 of the front side region F1 of the rim portion 16 and the rear side of the rim portion 16 may be set. The radius of curvature ρ3 of the field R is equal.

The rim portion 16 of the bowl portion 8 is provided with an overhanging portion 16b that faces the front side of the rim portion 16 in the front side field F1 from the rim spouting port 26 in the front side field F2 toward the front side. The upper edge portion of the portion near the front end portion 16a is partially formed in an overhanging shape that protrudes inward, and the overhanging portion 16b covers the upper side of the rim spouting port 26.

Moreover, the rim portion 16 of the bowl portion 8 includes an upright portion 16c, and the region of the inner peripheral surface 17 other than the overhang portion 16b has a shape that is substantially erected in the vertical direction.

The front side fields F1 and F2 in the vicinity of the front end portion 16a of the inner peripheral surface 17 of the rim portion 16 are formed to protrude inward by the overhang portion 16b, and are formed in the rim portion 16 by the overhang portion 16b. The front side field F3 and the rear side field R other than the vicinity of the front end portion 16a are formed in a shape that is substantially perpendicular to the vertical direction. Therefore, the water spray does not occur in the vicinity of the front end portion 16a of the rim portion 16 having the minimum radius of curvature ρ1. The splashing of water to the outside of the toilet 1 can increase the water potential of the washing water spouted from the rim spouting port 26. In addition, it is possible to swing back to the rear side region R of the rim portion 16 in a state where the strong water potential is sufficiently maintained, so that the rear side region R of the bowl portion 16 which is easily contaminated can be more reliably washed. .

Further, by the overhanging portion 16b of the front side regions F1 and F2 in the vicinity of the front end portion 16a of the rim portion 16, even in the vicinity of the rim spouting port 26 of the rim portion 16 where splashing of water is particularly likely to occur, splashing of water occurs. In the phenomenon, this splash will hit the upper edge portion of the overhang portion 16b of the rim portion 16, so that splashing of water to the outside of the toilet 1 can be prevented.

In addition, since the inner peripheral surface 17 of the rim portion 16 of the bowl portion 8 has a shape that is substantially perpendicular to the vertical direction in a portion other than the vicinity of the front end portion 16a, it is easy even if dirt adheres to it. Wipe it clean.

Further, in the flush toilet 1 of the present embodiment, the inner peripheral surface 17 of the rim portion 16 has the form of the standing portion 16c, but the inner peripheral surface of the rim portion may be nearly entirely The circumference is set to an overhanging shape instead of the standing portion 16c, or a so-called "opening edge type" in which the inner side of the rim water guiding path formed along the circumferential direction of the rim portion 16 is opened may be used. Shape.

Further, the rim spouting port 26 is located above the height position of the shed portion 18 of the bowl portion 8 at a position higher than a predetermined distance h, and is formed on the upper end side of the rim portion 16 of the bowl portion 8. In this manner, the washing water discharged from the rim spouting port 26 passes through the vicinity of the front end portion 16a of the rim portion 16 having a small radius of curvature, and then forms a water flow (swirl flow) that swirls toward the rear side of the rim portion 16. F1), and a water flow (downflow f2) descending from the upper end side of the rim portion 16 is formed, and the inside of the bowl portion 8 can be effectively washed out by the swirling flow f1 and the downward flow f2. Moreover, the vicinity of the front end portion 16a of the rim portion 16 of the bowl portion 8 can be reliably washed out by the washing water discharged from the rim spouting port 26 disposed at the upper end side of the rim portion 16 at the upper end side.

Further, since the rim spouting port 26 is formed at the rim portion 16 above the predetermined distance h of the shed portion 18, the washing water discharged from the rim spouting port 26 (the use of the 14th and 15th portions) As will be described in detail, the swirling flow f1 of the first orbiting track T1 of the first turn does not flow down to the shed portion 18, but is swirled, and the swirling flow f3 of the second turning track T2 of the second turn is The shed portion 18 is rotated, and it is possible to suppress the washing water of the first swirling track T1 and the second turning track T2 which are swirled at the rim portion 16 in the vicinity of the rim spouting port 26 where splashing of water is particularly likely to occur. The phenomenon of splashing water caused by impact.

Further, by forming the rim spouting port 26 on the upper end side of the rim portion 16 of the bowl portion 8, the rim spouting port 26 surely enters the edge for the user who views the bowl portion 8 from the front obliquely upward. The dead angle of the overhanging portion 16b of the side portion 16 is such that the user will be more difficult to see the rim spouting port 26. Further, in addition to enhancing the feeling of cleanness felt by the user, the overall appearance of the bowl portion 8 can be improved.

Further, the rim spouting port 26 is formed on the rim portion 16 which is located outside the inner edge portion 18a of the shed portion 18 of the bowl portion 8 (on the outer edge portion 18b side of the shed portion 18). As will be described in detail in Fig. 15, when viewed from a plan view, the first orbiting track T1 is located outside the second orbiting track T2. In this way, it is possible to effectively suppress the phenomenon of splashing of water caused by the collision of the washing water of the first orbiting track T1 and the second turning track T2 in the vicinity of the edge spouting port 26 where splashing of water is particularly likely to occur.

Further, the rim portion 16 of the bowl portion 8 is provided with a continuous forming portion 26c which is directed downward from the upper edge portion 26b of the water passage 26a formed in the rim spouting port 26 The standing portion 16c of the inner peripheral surface 17 of the side edge portion 16 is continuously formed. This continuous forming portion 26c is located on the right side of the center line A1 (refer to FIG. 3) when viewed from the front side of the toilet body 2. The inner peripheral surface 17 of the rim portion 16. With the continuous forming portion 26c, the upper surface of the rim spouting port 26 and the overhanging portion 16b of the rim portion 16 are continuously formed, so that the washing water discharged from the rim spouting port 26 will follow the rim. The inner peripheral surface 17 of the portion 16 flows smoothly. Further, since the swirling flow f1 and the downward flow f2 in the vicinity of the front end portion 16a of the rim portion 16 having a small radius of curvature are formed, the vicinity of the front end portion 16a of the rim portion 16 of the bowl portion 8 can be surely washed. net. Further, the upper side edge portion 26b of the water passage 26a for forming the rim water discharge port 26 and the inner peripheral surface 17 of the rim portion 16 are continuously formed, and the discharge from the rim spout 26 is performed. The water can smoothly flow along the inner peripheral surface 17 of the rim portion 16 by the centrifugal force, and it is possible to suppress the splash of water generated by the collision of the washing water to be swirled.

Further, the overhanging portion 16b of the front side regions F1 and F2 of the rim portion 16 extends toward the front side from the rim spouting port 26 to reach the front end portion 16a in the front side field F1 of the rim portion 16, from which the front end portion When the 16a extends and reaches the continuous forming portion 26c, when the inside of the bowl portion 8 is viewed from above, the front end portion 16a of the rim portion 16 is disposed symmetrically with respect to the left and right. Therefore, the rim spouting port 26 is formed in the vicinity of the front end portion 16a of the rim portion 16, and the overhanging portion 16b of the rim portion 16 covers the rim spouting port 26, so that when the user is viewed from the front obliquely upward At the time, the edge spout 26 cannot be seen. Further, the overhanging portion 16b of the rim portion 16 is formed in the vicinity of the front end portion 16a of the rim portion 16 of the bowl portion 8 in a bilaterally symmetrical manner, so that the overall appearance of the bowl portion 8 can be improved.

Moreover, the edge portion 26d on the rear side of the rim spouting port 26 is inclined upward from the lower side toward the water spouting direction of the rim spouting port 26. In this manner, the washing water discharged from the rim spouting port 26 is formed by the edge portion 26d of the rim spouting port 26 which is inclined upward from the lower side, and passes through the front end portion 16a of the rim portion 16 having a small radius of curvature. After the vicinity, a water flow (swirl flow f1) that swirls toward the rear side of the rim portion 16 is formed, and a water flow (downflow f2) descending from the upper end side of the rim portion 16 is formed, and the swirl flow f1 and the downward flow are utilized. F2, the vicinity of the front end portion 16a of the rim portion 16 of the bowl portion 8 can be reliably washed.

Further, since the lip portion 26d of the rim spouting port 26 is inclined upward from the lower side in the water discharge direction, even if an unwashed portion is likely to occur at the boundary between the first orbiting track T1 and the second orbiting track T2, Since the washing water discharged from the rim spouting port 26 flows downward, the occurrence of such an unwashed portion can be prevented.

In addition, by the lip portion 26d of the rim spouting port 26 which is inclined upward from the lower side in the water discharge direction, a part of the washing water discharged from the rim spouting port 26 can be lowered, and the washing can be performed by the descent. The water can more effectively suppress the behavior of the swirling flow f4 of the washing water discharged from the jetting spout 22 to fly out to the outside of the recessed portion 20. Further, in the recess 20 of the bowl portion 8, the discharge water from the jet spout 22 is added to the descending edge to spout water, so that a combination of the swirling flow in the lateral direction and the swirling flow in the longitudinal direction is generated. The swirling flow f4 with strong rotating force together can improve the discharge performance of the dirt. In addition, it is also possible to more effectively suppress splashing of water generated when the edge spouting water collides with the jetting spout.

The rim portion 16 of the bowl portion 8 is formed in the field of the rear side field R and the front side field F3 in the bowl portion 8 which the user can see from the front oblique upper side of the bowl portion 8, forming a left-right symmetry, and a rim spout Although the inner peripheral side is open, the upper side is covered by the overhanging portion 16b, so that the user who views the rim portion 16 from the front obliquely upper side of the bowl portion 8 cannot see the rim spouting port 26 Therefore, the overall appearance of the bowl portion 8 can be improved.

In particular, as shown in Figs. 9 to 11 , the rim spout 26 is formed in the vicinity of the front end portion 16a of the rim portion 16 of the bowl portion 8, and the inner peripheral surface in the front side field F1 of the rim portion 16 is formed. In the vicinity of the front end portion 16a of the rim portion 16, the 17 is formed in a shape of an overhang by a vertical surface 17a and a horizontal surface 17b extending inward from the vertical surface 17a. By using the vertical surface 17a and the horizontal surface 17b, a recessed space B that protrudes forward is formed in the shed portion 18 near the inner peripheral side front end portion 16a of the rim portion 16, and in this recessed space B, the rim is spouted. The nozzle 26 and the vertical surface 17 of the rim portion 16 are continuously formed on the same surface.

That is, the rim spouting port 26 is formed in the recessed space B in the front side field F1, F2 of the rim portion 16 of the bowl portion 8, and this recessed space B is opposite to the rim portion of the bowl portion 8. The imaginary surface 16d which is formed on the same surface as the inner peripheral surface 17 of the upright portion 16c which is substantially perpendicularly formed in the vertical direction is formed in the front side and is formed to protrude in the left-right direction by a predetermined width. The upper edge portion of the recessed space B coincides with the overhanging portion 16b, and the lower end of the front end portion 16a of the inner peripheral surface 16f in the recessed space B coincides with the front end 18c of the outer edge portion 18b of the shed portion 18.

Further, the rim spouting port 26 is located further forward than the trailing edge 16e of the upper edge portion 16b of the recessed space B, and is located further rearward than the front end 18c of the outer edge portion 18b of the shed portion 18, in the recessed space B, A water passage 26a extending from the rear end of the lip portion 26d of the rim spout 26 along the inner peripheral surface 16f in the recessed space B to the vicinity of the front end portion 16a is formed, and the recessed space is passed from the water passage 26a. The extended portion 26e extending from the foremost portion 16a of the inner peripheral surface 16f in the B is continuously formed in the continuous forming portion 26c of the rim inner peripheral surface 16c from the inside of the recessed space B. As a result, the user who views the bowl portion 8 obliquely from the front is not easy to see the rim spouting port 26, and the feeling of cleanness felt by the user can be improved.

In addition, the details will be described with reference to FIGS. 14 and 15 , and the swirling direction of the washing water discharged from the rim spouting port 26 and the swirling direction of the washing water discharged from the jet spouting port 22 will be described. In the top view, they are in the same direction. Moreover, the water discharge direction D1 (arrow D1 in FIG. 14) of the jet water spout 22 is obliquely downward toward the front, and is substantially the same as the water discharge direction D2 (arrow D2 in FIG. 14) of the rim spouting port 26.

Next, the joining process of the pottery toilet body 2 of the flush toilet 1 according to the embodiment of the present invention at the time of manufacture will be described with reference to Fig. 6, Fig. 10, Fig. 12, and Fig. 13 .

Fig. 12 is a side view showing the toilet body in a state before the joining process of the flush toilet according to the embodiment of the present invention, and Fig. 13 is a view showing the state of the flush toilet of the embodiment of the present invention before the joining process. Front cross section of the toilet body.

As shown in FIG. 12 and FIG. 13 , in the toilet body 2 made of the ceramics of the flush toilet 1 of the present embodiment, when the toilet body 2 is manufactured, the dirt receiving surface 14 and the shed portion 18 are formed in advance. The lower toilet body portion 2a of the bowl portion 8 other than the rim portion 16 and the lower toilet bowl portion 2a including the rim portion 16 are separately molded, and then at the upper end of the lower toilet body portion 2a in the joining step. The lower end portion 2d of the upper toilet body portion 2b is joined together over the entire circumference of the portion 2c. This upper toilet body portion 2b has a rim portion 16 that is joined to the upper end portion of the body of the bowl portion 2 of the lower toilet body 2a in the joining step.

Further, as shown in Fig. 13, the rim portion 16 of the upper toilet main body portion 2b includes rim inner wall portions 16g and rim outer wall portions 16h which respectively form the inner and outer circumferences of the rim portion 16; a rim edge bottom surface portion 16i that combines the rim inner wall portion 16g and the rim outer wall portion 16h; the upper edge portion of the upper edge portion for joining the rim inner wall portion 16g and the rim outer wall portion 16h 16j, the rim water conduit 10d is formed by the rim inner wall portion 16g, the rim outer wall portion 16h, the rim bottom surface portion 16i, and the rim upper surface portion 16j. In this manner, the space formed by the rim inner wall portion 16g, the rim outer wall portion 16h, the rim bottom surface portion 16i, and the rim upper surface portion 16j of the rim portion 16 can be used as the rim water conduit 10d. Therefore, the toilet body 2 can be made into a simple structure without separately providing a water conduit. Further, by forming the rim spouting port 26 at the rim inner wall portion 16g located at the front position of the bowl portion 8, a simpler structure can be obtained.

In addition, although the toilet body 2 which shows the state after the lower side toilet body part 2a and the upper side toilet main-body part 2b after the joining process is shown by FIG. 6 and FIG. 10, it shows the lower side toilet except the rim part 16. The bonding line C (boundary line) of the joint portion between the bowl portion 8 of the main body portion 2a and the rim portion 16 of the upper toilet main body portion 2b is located in the lower area of the rim bottom surface portion 16i in a plan view as seen from above. . In this way, even if the joint portion of the rim portion 16 and the bowl portion 8 excluding the rim portion 16 is the joint line C, which appears on the outer side surface of the toilet body 2, the boundary line C is viewed from above. At the time, it is also located in the lower area of the rim bottom surface portion 16i. Therefore, it is hidden by the bottom edge portion of the rim portion and cannot be seen, and the overall appearance of the outer side of the toilet 1 can be improved.

Further, as shown in FIGS. 6 and 13, the joint portion between the main body of the bowl portion 8 of the lower toilet main body portion 2a and the rim portion 16 of the upper toilet main body portion 2b is the joint line C, and in the joining process, The upper end portion 8a of the bowl portion 8 is in line contact with the lower end portion 16k of the rim inner wall portion 16g, thereby forming a boundary line between the body of the bowl portion 8 and the rim portion 16, which can be obtained from the bowl portion 8. The inside of the body and the rim portion 16 are seen. In this manner, when the toilet body 2 is manufactured, when the rim portion 16 and the bowl portion 8 other than the rim portion 16 are to be joined, the lower end portion of the rim inner wall portion 16g and the rim portion 16 are removed. The boundary line (bonding line C) formed by the line contact of the upper end portion 8a of the bowl portion 8 can be seen from the bowl portion 8, so that the rim portion 16 and the rim portion are removed when the toilet body 2 is manufactured. The work of joining the bowl portions 8 other than 16 can be easily performed.

Next, the action (operation) of the flush toilet according to an embodiment of the present invention will be described with reference to Figs. 1 to 17 .

Fig. 14 is a view schematically showing the first gyro or the second lap of the first lap of the flushing of the rim at the time of rim cleaning after the start of the rinsing washing according to the embodiment of the present invention; FIG. 15 is a perspective view for explaining a state in which the swirling flow of the spouting water in the flush toilet of the embodiment of the present invention flows down into the concave portion.

First, when the user operates an operation handle (not shown) for performing flushing of the toilet, the toilet washing starts, and the washing water in the water storage tank 6 flows through the common water conduit 10a to the injection guide. The water path 10b and the rim water guide 10c. Then, after the water spout from the jet spout 22 is started, the spouting from the rim spout 26 is started. At this time, the water discharge direction D1 (arrow D1 in FIG. 14) of the jet water spout 22 is obliquely downward toward the front, and is substantially the same as the water discharge direction D2 (arrow D2 in FIG. 14) of the rim spouting port 26.

Further, as shown in Figs. 11 and 14 , the rim is discharged from the rim spout 26, and the main flow flows toward the front side along the inner peripheral surface of the rim portion 16 and passes through the rim having the smallest radius of curvature. After the vicinity of the front end portion 16a of the portion 16, a left-handed swirling flow (swirl flow f1) toward the rear side of the rim portion 16 is formed, and a part of the rim spouting water forms a flow of water descending from the upper end side of the rim portion 16. Stream f2). In addition, the rim water spout after the first revolution is performed, and the left-handed swirling flow f3 of the second turn is formed inside the swirling flow f1 of the first turn.

On the other hand, the jet water spouting which is discharged obliquely from the jetting spout 22 toward the front (the spouting direction D1) flows along the front wall surface 20b and the bottom surface 20a in the recess 20, and rises upward from the lower side toward the rear side. After the whirling is performed, an oblique swirling flow f4 that swings forward and obliquely downward is formed along the wall surface 20b on the rear side in the recess 20 . The oblique swirling flow f4 is a left-handed swirling flow in a plan view of the concave portion 20 viewed from above, and the swirling direction of the spouting water and the swirling direction of the jetting spout are in the same direction in the plan view (left-handed). .

Further, as shown in Fig. 14, the washing water discharged from the rim spouting port 26 is located along the rim portion 16 and is rotated by the first swirling flow f1. When the first orbiting track T1 ends the rotation of the first turn, the second turning track T2 at the time of the turning around the rim portion 16 and the shed portion 18 by the swirling flow f3 of the second turn is further above and further outside. local.

Next, as shown in Fig. 14, the rim spouting system substantially maintains the water potential in the direction of the left-handed swirling flow, flows down the dirt receiving surface 14 into the concave portion 20, and merges with the swirling flow of the jetting water in the concave portion 20. Together, an oblique swirling flow f4 having a strong and rapid rotational force is generated in the recess 20.

Further, as shown in Fig. 15, after the rim spouting water merges with the oblique swirling flow f4 of the jet spout in the recess 20, the new rim spouting is continued from the rim spouting port 26, and the dirt receiving surface 14 is on the dirt receiving surface 14. When the amount of water to be spouted by the edge of the swirling is increased, the swirling flow f5 of the spouting water after the water potential becomes stronger flows down toward the oblique swirling flow f4 of the jetting water in the recess 20, and is merged to form the recess 20 The dirt inside is strongly urged toward the inlet 12a of the drainage retention bend line 12.

Finally, the strong rotating force of the oblique swirling flow f4 in the concave portion 20 after the merging of the edge spouting water can push the dirt having a large specific gravity from the bowl portion 8 into the drain retaining curved pipe 12 As for the suspended solids having a small specific gravity, the relatively swirling swirling flow f4 after the combined flow can be fed from the bowl portion 8 into the drain retaining curved line 12.

Next, Fig. 16(a) shows an example of analysis results of the flow velocity distribution relating to the spouting and spouting water when flushing the toilet using the flush toilet according to the embodiment of the present invention, Fig. 16(b) As a comparative example of the analysis result shown in FIG. 16( a ), the analysis results of the flow velocity distribution relating to the edge spouting and the jet spouting when the toilet is flushed using the conventional flush toilet are shown.

First, the shade of the color of the washing water shown in Fig. 16(a) is used to indicate the flow velocity of the washing water. When the toilet body 2 of the flush toilet 1 of the present embodiment is viewed from above, In the field from the rim spout in the bowl portion to the rear side of the rim portion through the tip end of the rim portion, and in the vicinity of the jet spout of the recess portion and the front side thereof, a large flow rate of the washing water can be obtained. .

On the other hand, the flush toilet of the comparative example shown in FIG. 16(b) is different from the form of the flush toilet 1 of the present embodiment, and has two edges in the field on the rear side of the rim portion. The side spout (the first and second rim spouts) is provided with a jet spout on the side wall surface of the single side of the recess in the bowl, but the rear side of the rim portion from the front end of the rim portion In the field of the vicinity of the second edge spout, compared with the flush toilet 1 of the present embodiment, the flow rate of the washing water is small, and it can be seen that the flushing power of the flush toilet of the present embodiment is relatively small. The previous flush toilets have been upgraded.

Next, Fig. 17(a) shows an example of analysis results of flow velocity distribution and flow pattern relating to jet water spouting when flushing a toilet using a flush toilet according to an embodiment of the present invention, and Fig. 17(b) is an example. As a comparative example of the analysis result shown in Fig. 17 (a), the analysis results of the flow velocity distribution and the flow pattern relating to the jet water spouting during the toilet flushing using the conventional flush toilet are shown.

First, the shade of the color of the flow line of the washing water shown in Fig. 17 (a) indicates the flow rate of the washing water, and the toilet body 2 of the flush toilet 1 of the present embodiment is known from the side. When it is viewed, the jetting water spouted from the jet spout of the recessed portion of the bowl portion toward the front obliquely downward flows along the front side wall surface and the bottom surface in the recessed portion, and is swung back toward the rear side from the lower side toward the upper side. An oblique swirling flow f4 that swirls forward and obliquely downward is formed along the wall surface on the rear side in the recess.

On the other hand, the flush toilet of the comparative example shown in FIG. 17( b ) is the same as the flush toilet of the comparative example shown in FIG. 16( b ), and the jet water discharged from the jet spout is discharged. After discharging toward the side wall surface of the concave portion facing the jet spout, a water flow descending to the bottom surface of the concave portion is formed. Therefore, the flow velocity and the rotational force of the swirling flow in the recessed portion of the flush toilet of the comparative example are higher than the flow velocity of the strong oblique swirling flow f4 of the flush toilet 1 of the present embodiment shown in Fig. 17(a). The rotatory force is weaker, and the flow of water propelled toward the drain retaining conduit is also small. Therefore, it can be seen that the flushing performance of the flush toilet of the present embodiment is improved as compared with the conventional flush toilet.

According to the flush toilet 1 of the embodiment of the present invention, the rinsing water spout 26 of the front side field F2 formed in the vicinity of the front end portion 16a in the front side field F1 of the rim portion 16 is discharged toward the front. After passing through the front end portion 16a in the front side field F1 of the rim portion 16, the water is smoothly moved toward the curvature radius ρ1 of the front end portion 16a of the edge portion 16 while maintaining the water potential of the discharged washing water. The large rear side region R flows, and since the rear side region R of the rim portion 16 is formed symmetrically with a substantially constant radius of curvature ρ3, the water potential of the discharged washing water is not reduced. The washing water is swirled by the centrifugal force acting on the washing water. As a result, even if the inner peripheral surface 17 of the rim portion 16 is substantially erected in the vertical direction, it is possible to prevent the washing water flowing through the rim portion 16 from splashing to the outside of the toilet 1, and the basin can be made stronger than the water potential. The large area within the department is rinsed out.

Further, according to the flush toilet 1 of the present embodiment, since the rim portion 16 of the bowl portion 8 is formed in the front side field F3 by a curvature radius ρ4 larger than the curvature radius ρ3 of the rear side region R, Therefore, the washing water that has passed through the leading end portion 16a of the rim portion 16 after being discharged from the rim spouting port 26 flows through the front side of the rim portion 16 of the bowl portion 8 while maintaining a relatively strong water potential. The front side field F2 in the field F1 close to the inner peripheral side front end portion 16a. This washing water flows through the front side field F3 of the rim portion 16 which is formed by the curvature radius ρ4 larger than the curvature radius ρ3 of the rear side region R of the rim portion 16, and therefore can be maintained on the one hand. The relatively strong water potential of the washing water from the front side field F1 of the rim portion 16 smoothly flows through the rear side region R of the rim portion 16 in a stable state, so that even the inner peripheral surface of the rim portion 16 The 17-shape is substantially erected in the vertical direction, and it is possible to prevent the washing water flowing through the rim portion 16 from splashing to the outside of the toilet 1.

In addition, the flush toilet 1 according to the embodiment of the present invention borrows the washing water from the rim spouting port 26 toward the inner peripheral side front end portion 16a in the front side field F1 of the rim portion 16 with a strong water potential. The water potential is moderately suppressed by the moderate energy loss occurring when passing through the front end portion 16a in the front side field F1 of the rim portion 16 formed by the minimum radius of curvature ρ1, and therefore, it is possible to prevent the water from being washed. The water potential is too strong to splash to the outside of the toilet 1.

Further, the flush toilet 1 according to an embodiment of the present invention is a front end in the front side field F1 of the rim portion 16 having the minimum curvature radius ρ1 from the rim spouting port 26 which is particularly prone to splashing of water. The upper edge portion of the portion up to the portion 16a has the overhanging portion 16b that is formed in an overhanging shape that protrudes inwardly, so that the rim portion 16 is swirling the washing water, in the case of the rim edge spout 26 A portion of the front end portion 16a in the front side field F1 of the edge portion 16 is splashed with water splashing, and this splash will hit the overhang portion 16b of the edge portion 16, thereby preventing the splash from splashing to the toilet. The exterior of 1.

Further, in the above-described flush toilet 1 of the present embodiment, an example of a flush toilet is described. However, the siphon action may be used to suck the dirt in the bowl. The so-called "siphon type flush toilet" that is discharged to the outside from the drain retaining bend pipe.

Further, in the flush toilet 1 of the present embodiment described above, the jet water spouting port 10b and the jet spouting port 22 are used to perform jetting and spouting, and the rim water guiding passage 10d and the rim water spouting port 26 are used. Although the flush toilet of the form of spouting water has been described, the present invention is not limited to this embodiment, and may be applied to omit the spouting by the jet water conduit 10b and the jet spout 22, but only by using the edge. The side water conduit 10d and the rim water spout 26 are used to form a flush toilet in the form of water spouting.

1. . . Flush toilet

2. . . Toilet body

2a. . . Lower toilet body

2b. . . Upper toilet body

2c. . . Upper end of the lower toilet body portion

2d. . . Lower end of the upper toilet body portion

4. . . toilet lid

6. . . Water storage tank (washing water supply means)

6a. . . Drainage port of the water storage tank

8. . . Basin

8a. . . Upper end of the body of the basin

10. . . Waterway

10a. . . Common water guide

10b. . . Jet water conduit

10c. . . Entrance of the water conduit

10d. . . Edge water guide

12. . . Drainage retention bend line (drainage path)

12a. . . Drainage retention bend pipe inlet

12b. . . Rising path of drainage retention bend pipeline

12c. . . Descent path for draining and retaining bend pipeline

14. . . Stained surface

14a. . . The lower edge of the dirt bearing surface

16. . . Edge

16a. . . Front end of the rim

16b. . . Overhang of the rim

16c. . . Erecting of the rim

16d. . . An imaginary plane on the same side as the inner peripheral surface of the erect portion of the rim portion

16e. . . The trailing edge of the overhang of the rim

16f. . . Inner peripheral surface in the recessed space of the rim portion

16g. . . Edge inner wall

16h. . . Rim outer wall

16i. . . Bottom part of the rim

16j. . . Rim upper part

16k. . . The lower end of the inner wall portion of the rim portion

17. . . Inner peripheral surface of the rim

17a. . . Plumb noodles

17b. . . level

18. . . Shed

18a. . . Inner edge of the shed

18b. . . The outer edge of the shed

18c. . . Front end of the outer edge of the shed

20. . . Concave

20a. . . Bottom of the recess

20b. . . Wall of the recess

twenty two. . . Jet spout (spraying spout)

twenty four. . . Drain casing

26. . . Edge spout (edge spouting)

26a. . . Water passage in the spout

26b. . . The upper edge of the water passage in the spout

26c. . . Continuous formation

26d. . . The edge of the spout

26e. . . The extension of the water passage in the spout

A1. . . Center line of the front and rear direction of the basin

A2. . . Center line of the left and right direction of the basin

B. . . Sag space

C. . . Bonding wire

D1. . . Jetting direction

D2. . . Spitting direction of water spouting

F. . . Front side of the basin

F1. . . Front side of the basin

F2. . . Front side of the basin

F3. . . Front side of the basin

F1. . . The whirlpool of the first lap (mainstream)

F2. . . Downflow

F3. . . Circling flow of the second lap

F4. . . Oblique swirling

F5. . . Cyclonic flow

R. . . The rear side of the basin

T1. . . First gyro orbit

T2. . . 2nd gyro

Fig. 1 is a schematic perspective view showing the flush toilet according to an embodiment of the present invention.

Fig. 2 is a side cross-sectional view showing a state in which a toilet seat and a toilet lid are omitted in a flush toilet according to an embodiment of the present invention.

Fig. 3 is a plan view showing a toilet body of a flush toilet according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 3;

Fig. 5 is a cross-sectional view as seen along the line V-V of Fig. 3.

Fig. 6 is a cross-sectional view taken along line VI-VI of Fig. 3;

Fig. 7 is a cross-sectional view taken along line VII-VII of Fig. 3;

Fig. 8 is a perspective view showing the entire water conduit of the flush toilet according to an embodiment of the present invention.

Fig. 9 is an enlarged perspective view showing the rim spouting port in the front side of the bowl of the flush toilet according to the embodiment of the present invention as viewed obliquely from the rear side.

Fig. 10 is an enlarged plan view showing a portion in which a front portion of a flush toilet according to an embodiment of the present invention shown in Fig. 3 is enlarged.

Fig. 11 is a partially enlarged perspective view showing a portion of a rim spouting port of a flush toilet according to an embodiment of the present invention shown in Fig. 2;

Fig. 12 is a side view showing the toilet body in a state before the joining process of the flush toilet according to the embodiment of the present invention.

Fig. 13 is a front sectional view showing the toilet body in a state before the joining process of the flush toilet according to the embodiment of the present invention.

Fig. 14 is a view schematically showing a first gyro or a second lap of the first lap of the rim rinsing when the rinsing of the flush toilet according to the embodiment of the present invention is started after the rinsing washing is started. A perspective view of the second gyroscopic track.

Fig. 15 is a perspective view for explaining a state in which the swirling flow of the rim spouting water in the flush toilet of the embodiment of the present invention flows down into the concave portion.

Fig. 16 (a) of Fig. 16 is an example of analysis results showing a flow velocity distribution relating to rim spouting and jet spouting when the toilet is washed by the flush toilet according to the embodiment of the present invention. Further, Fig. 16(b) is a comparative example of the analysis result shown in Fig. 16(a), and shows a flow velocity distribution relating to rim spouting and jet spouting when the toilet is washed using a conventional flush toilet. The result of the analysis.

Fig. 17 (a) of Fig. 17 is an example of an analysis result showing a flow velocity distribution and a flow pattern relating to jet water spouting when the toilet is washed by the flush toilet according to the embodiment of the present invention. Further, Fig. 17(b) is a comparative example of the analysis result shown in Fig. 17(a), and shows a flow velocity distribution and a flow pattern relating to jet water spouting when the toilet is washed using a conventional flush toilet. Analyze the results.

8. . . Basin

10. . . Waterway

10a. . . Common water guide

10b. . . Jet water conduit

10c. . . Entrance of the water conduit

10d. . . Edge water guide

12a. . . Drainage retention bend pipe inlet

14. . . Stained surface

16. . . Edge

16a. . . Front end of the rim

18. . . Shed

20. . . Concave

20b. . . Wall of the recess

twenty two. . . Jet spout (spraying spout)

26. . . Edge spout (edge spouting)

A1. . . Center line of the front and rear direction of the basin

A2. . . Center line of the left and right direction of the basin

F. . . Front side of the basin

F1. . . Front side of the basin

F2. . . Front side of the basin

F3. . . Front side of the basin

R. . . The rear side of the basin

Claims (4)

A flush toilet is a flush toilet that flushes a toilet with a washing water supplied from a washing water source to discharge dirt, and has a dirt receiving surface having a basin shape and is formed at an upper edge portion. The inner peripheral surface forms a rim portion which is substantially erected in the vertical direction, a bowl portion formed in the shed portion between the rim portion and the dirt receiving surface, and the inlet thereof is connected below the bowl portion a drain passage for discharging the dirt; a spouting portion for discharging the washing water to the shed portion of the bowl portion to form a swirling flow; and a water conduit for supplying the washing water to the spouting portion; the spouting portion is formed at In the vicinity of the front end in the front side region of the rim portion, the rear side region of the rim portion has a larger radius of curvature than the front end of the front side region of the rim portion, and is substantially constant in bilateral symmetry. The water spouting portion is formed by the front side in the front side region of the rim portion, and forms a swirling flow that flows to the rear side region of the rim portion. The flush toilet according to claim 1, wherein the rim portion of the bowl portion is in the front side region and has a radius of curvature larger than a radius of curvature of the rear side region. It is close to the area near the front end. The flush toilet according to claim 1, wherein the front end in the front side region of the rim portion is formed by a minimum radius of curvature of the entire circumference of the rim portion, and the spouting portion is Any one of the left and right sides adjacent to the front end of the rim portion is formed in a portion that changes from a large radius of curvature to a small radius of curvature. The flushing toilet according to the third aspect of the invention, wherein the rim portion of the bowl portion has an upper edge portion of a portion from a vicinity of a front end in a front side region of the rim portion from the water spout portion, It forms an overhanging shape that protrudes inward.