Flushing toilet

Abstract

The present invention provides a flushing toilet that can cope with variations in the flow rate of cleaning water and can ensure the basic performance of the toilet within a wide range of water supply flow rates. The flushing toilet according to an embodiment includes a bowl portion, a trap portion, a main water guide, an inner edge communication hole, an inner edge water guide, and an inner edge water outlet. The bowl portion receives excrement. The trap portion extends from the bowl portion and discharges the excrement received by the bowl portion. The main water guide allows cleaning water to flow toward the bowl portion. The inner edge communication hole allows the cleaning water to flow from the main water guide. The inner edge water guide allows the cleaning water flowing from the inner edge communication hole to flow. The inner edge water outlet supplies the cleaning water flowing in the inner edge water guide to the bowl portion. The inner edge water outlet has a low-flow rate water outlet that becomes the inner edge water outlet when the cleaning water flowing in the inner edge water guide is at a low flow rate, and a high-flow rate water outlet that becomes the inner edge water outlet when the cleaning water flowing in the inner edge water guide is at a high flow rate.

Description

Technical Field

[0001] The disclosed implementation involves a flush toilet. Background Technology

[0002] Previously, for flush toilets, there was a known technique for cleaning the basin surface that receives waste by causing the cleaning water supplied from the spout to swirl (vortex).

[0003] Such a flushing toilet has the following features: it has a water tank, and the water guide path for the flow of cleaning water to the basin is formed with a narrowing section, such that the larger the water flow from the water tank, the smaller the cross-sectional area of ​​the water guide path. Whether the water flow from the water tank is larger than the water flow required by the toilet body, or the water flow from the water tank is smaller than the water flow required by the toilet body, it will suppress the changes in the distribution ratio and flow rate of the cleaning water supplied from the spout, and can supply cleaning water with an appropriate water flow to the basin (for example, see Japanese Patent Application Laid-Open No. 2020-159188).

[0004] Furthermore, regarding the so-called flushing valve toilets that supply the original water pressure to the toilet body, since the water pressure varies depending on the location where the toilet is installed, there are cases where the flushing water flowing in the water guide is at a low flow rate and cases where the flushing water flowing in the water guide is at a high flow rate. Sometimes, there is an uneven distribution of the original water pressure in each region.

[0005] In contrast, conventional flush toilets, as described above, require a water tank, making it difficult to handle fluctuations in the flow rate of the flushing water in the toilet, such as those supplied with the original water pressure by flush valves or similar devices.

[0006] Furthermore, for example, if the flushing water outlet is defined as an opening that specifies the flow rate of the flushing water supplied to the basin surface, it is possible to switch the outlet based on whether the flow rate of the flushing water in the water guide is low or high. In contrast, with conventional flushing toilets as described above, the cross-sectional area of ​​the flushing water flowing in the water guide temporarily decreases at the constriction and then increases again when supplied from the outlet; therefore, the flushing toilet does not switch the outlet based on whether the flow rate of the flushing water in the water guide is low or high.

[0007] Previously, there was a type of flush toilet that used water from an inner edge spout and a jet spout to flush out waste (for example, see Japanese Patent Application Publication No. 2018-3250).

[0008] The aforementioned flushing toilet suppresses the generation of abnormal noise when water is ejected from the jet nozzle. However, there is room for further improvement in the generation of abnormal noise in the aforementioned flushing toilet.

[0009] Previously, a wall-mounted flush toilet that is installed on the wall was known (for example, see Japanese Patent Application Publication No. 2013-238048).

[0010] Wall-mounted flush toilets require robust load-bearing capacity in their mounting components. There is room for improvement in the lightweight design of the aforementioned flush toilets. Summary of the Invention

[0011] One embodiment of the flush toilet includes: a basin for receiving waste; a curved section extending from the basin for discharging waste received by the basin; a main water passage for supplying cleaning water toward the basin; an inner rim connecting hole for receiving cleaning water from the main water passage; an inner rim guide water passage for supplying cleaning water flowing from the inner rim connecting hole; and an inner rim outlet for supplying the cleaning water flowing in the inner rim guide water passage to the basin, the inner rim outlet having: a low-flow outlet, which becomes the inner rim outlet when the flow of cleaning water in the inner rim guide water passage is low; and a high-flow outlet, which becomes the inner rim outlet when the flow of cleaning water in the inner rim guide water passage is high. Attached Figure Description

[0012] Figure 1 This is a schematic perspective view of the flush toilet according to the first embodiment.

[0013] Figure 2 This is a schematic top view showing the inner edge water guide channel and the jet water guide channel.

[0014] Figure 3 It is a schematic three-dimensional diagram showing the inner water guide channel and the inner water outlet.

[0015] Figure 4 This is an explanatory diagram (one) of the cleaning water from the low-flow-rate outlet of the inner edge water outlet when the cleaning water flowing in the inner edge guide channel is at a low flow rate.

[0016] Figure 5 This is an explanatory diagram (Part Two) of the cleaning water from the low-flow-rate outlet of the inner edge water outlet when the cleaning water flowing in the inner edge guide channel is at a low flow rate.

[0017] Figure 6 This is an illustration of the high-flow-rate cleaning water from the inner edge of the water guide channel, which becomes the high-flow-rate water outlet of the inner edge.

[0018] Figure 7This is a perspective view of the flush toilet according to the second embodiment.

[0019] Figure 8 This is a top view of the flush toilet according to the second embodiment.

[0020] Figure 9 This is a side view of the flush toilet according to the second embodiment.

[0021] Figure 10 yes Figure 9 Sectional view IV-IV.

[0022] Figure 11 It means Figure 10 A schematic diagram of the shape of the jet guide channel in the V-V section.

[0023] Figure 12 It means Figure 10 A schematic diagram of the shape of the jet guide channel in section VI-VI.

[0024] Figure 13 It means Figure 10 A schematic diagram of the shape of the jet guide channel in section VII-VII.

[0025] Figure 14 This is a perspective view of the flush toilet according to the third embodiment.

[0026] Figure 15 This is a top view of the flush toilet according to the third embodiment.

[0027] Figure 16 This is a side view of the flush toilet according to the third embodiment.

[0028] Figure 17 This is a rear view of the flush toilet according to the third embodiment.

[0029] Figure 18 yes Figure 17 V-V sectional view.

[0030] Figure 19 yes Figure 17 Sectional view VI-VI.

[0031] Explanation of reference numerals in the attached figures

[0032] (First Implementation)

[0033] 1: Flushing toilet; 21: Basin; 23: Bend; 31: Main water path; 41: Inner edge connecting hole; 42: Inner edge guide water path; 43: Inner edge spout; 431: Low flow spout; 432: High flow spout; 44: Mixing chamber; 441: Wall; 45: Pressure control section; 51: Jet guide water path; 52: Jet spout; A1: Downstream area; L: Central axis; S: Flow path cross-sectional area; W: Cleaning water;

[0034] (Second Implementation)

[0035] 1: Flushing toilet; 2: Toilet body; 3: Basin; 6: Jet nozzle; 7: Drain bend (bend); 20: Jet guide; 21: Jet nozzle; 23: Bending section; 24: Retracting section; 24a: Top surface; 24b: Bottom surface; 24c: Side surface;

[0036] (Third Implementation)

[0037] 1: Flushing toilet; 2: Toilet body; 3: Basin; 5: Drain bend (bend); 5a: Riser pipe; 5b: Downsink pipe; 6: Drain pipe seat; 7: Drain flange; 8: Mounting part; 9: Curtain panel; 10: Mounting hole; 10a: First mounting hole; 10b: Second mounting hole; L1: First virtual center line (virtual center line); L2: Second virtual center line; A1: First wall thickness area; A2: Second wall thickness area. Detailed Implementation

[0038] The embodiments of the flush toilet disclosed in this application will now be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the embodiments shown below. Furthermore, it should be observed that the drawings are schematic, and the dimensional relationships and proportions of the elements may sometimes differ from reality. Sometimes, the drawings may also include portions with different dimensional relationships or proportions.

[0039] <1. First Implementation>

[0040] <The overall structure of a flush toilet>

[0041] Reference Figure 1 and Figure 2 An example of the overall configuration of the flush toilet 1 according to the first embodiment will be described. Figure 1 This is a schematic perspective view of the flush toilet 1 according to the first embodiment. Figure 2 This is a schematic top view showing the inner edge water guide channel 42 and the jet water guide channel 51.

[0042] It should be noted that sometimes this includes Figure 1The figures illustrate a three-dimensional orthogonal coordinate system including the Z-axis, with the vertically upward (above) direction set as positive. Hereinafter, for ease of explanation, the positive direction of the X-axis will sometimes be defined as left, the negative direction as right, the positive direction of the Y-axis as forward, and the negative direction as backward. Furthermore, the X-axis direction will be referred to as the left-right direction, the Y-axis direction as the front-back direction, and the Z-axis direction as the up-down direction.

[0043] like Figure 1 As shown, the flush toilet 1 is a wall-mounted toilet installed on the bathroom wall. It should be noted that the flush toilet 1 can also be a floor-mounted toilet installed on the bathroom floor.

[0044] In addition, the flushing toilet 1 is activated by a jet nozzle 52 (described later) Figure 2 A powerful flushing water jet is directed towards the bend 23 (described later) to create a strong water flow that drives waste downstream, a so-called blow-out type toilet. It should be noted that the flushing toilet 1 can be of other types, such as a wash-down type or a siphon type.

[0045] In addition, the flush toilet 1 is a so-called flush valve type toilet that uses the original water pressure from a water supply source such as a tap water pipe to supply cleaning water to the toilet body 2 (described later).

[0046] Furthermore, the flush toilet 1 is a toilet made of ceramic. It should be noted that the flush toilet 1 is not limited to ceramic; it can also be a toilet made of resin, or a toilet made by combining ceramic and resin.

[0047] like Figure 1 and Figure 2 As shown, the flush toilet 1 includes a toilet body 2. The toilet body 2 includes a basin 21, an inner rim 22, a curved pipe 23, a skirt 24, and a back 25. Furthermore, the toilet body 2 includes a main water passage 31 and an inner rim connecting hole 41 (see reference). Figure 3 ), inner edge water guide 42, inner edge water outlet 43, jet water guide 51 and jet water outlet 52.

[0048] The inner surface (basin surface) 21a of the basin 21, which receives waste, is formed in the shape of a basin. A predetermined amount of water is stored at the bottom of the basin 21. In addition, a curved pipe 23 is connected to the bottom of the basin 21.

[0049] The inner edge portion 22 is provided on the upper edge of the basin portion 21. The inner edge portion 22 is formed in a ring shape along the upper edge of the basin portion 21.

[0050] The bend 23 extends rearward from the bottom of the basin 21, discharging waste collected by the basin 21 into an external piping (not shown). The bend 23 includes, for example, an ascending pipe 231 and a descending pipe 232. The upstream end of the ascending pipe 231 is connected to the bottom of the basin 21. The ascending pipe 231 is an inclined pipe that rises as it extends rearward from the bottom of the basin 21. The upstream end of the descending pipe 232 is connected to the downstream end of the ascending pipe 231. The descending pipe 232 is a pipe that descends from the ascending pipe 231. It should be noted that the downstream end of the descending pipe 232 is connected to an external piping (not shown).

[0051] The skirt 24 is configured to cover the front area of ​​the basin 21. The skirt 24 forms the shape of the flush toilet 1 in the front area of ​​the basin 21.

[0052] The back panel 25 is located behind the basin 21. The back panel 25 is fixed to the bathroom wall, for example, by installing a mounting bracket into the mounting hole. In this way, the toilet 1 is fixed to the wall by fixing the back panel 25 to the wall.

[0053] like Figure 2 As shown, the main water passage 31 extends forward from the water supply port 71 in the flushing toilet 1. The main water passage 31 supplies flushing water W (W1) to flow toward the basin 21. The main water passage 31 is connected to the inner edge guide passage 42 and the jet guide passage 51, which will be described later.

[0054] like Figure 2 As shown, the inner edge connecting hole 41 is the inlet (hole) for the cleaning water W1 to flow into from the main water passage 31. The cleaning water W1 branching off from the main water passage 31 flows into the inner edge connecting hole 41. The inner edge guiding water passage 42 is a flow path located downstream of the inner edge connecting hole 41 to allow the cleaning water W (W21) flowing in from the inner edge connecting hole 41 to flow. It should be noted that the inner edge guiding water passage 42 will be used later. Figure 3 We will describe it in detail later.

[0055] The inner edge spout 43 is the outlet for the cleaning water W21 flowing through the inner edge water guide 42, supplying the cleaning water W21 flowing through the inner edge water guide 42 to the basin 21. The cleaning water W22 supplied from the inner edge spout 43 to the basin 21 forms a swirling flow that swirls on the basin surface 21a while flowing into the bend 23. In the flush toilet 1, the basin surface 21a is cleaned (tornado cleaning) by such a swirling flow.

[0056] Furthermore, the inner edge discharge port 43 includes a low-flow discharge port 431 and a high-flow discharge port 432. The configuration of the inner edge discharge port 43 (low-flow discharge port 431 and high-flow discharge port 432) will be discussed later. Figure 3 We will describe it in detail later.

[0057] like Figure 2 As shown, the jet guide water passage 51 is a flow path for the cleaning water W1 from the main water passage 31 to flow in and for the cleaning water W (W31) to flow toward the jet outlet 52 described later. The jet guide water passage 51 is located downstream of the pressure speed control unit 45, which connects the main water passage 31 and the inner edge guide water passage 42, and is supplied with the cleaning water W1 from the main water passage 31.

[0058] The spray nozzle 52 sprays the cleaning water W (W32) flowing through the spray guide 51 from the front of the bend section 23 toward the bend section 23.

[0059] It should be noted that, as Figure 1 As shown, the flush toilet 1 may include a panel 61 for reinforcing the bend section 23. Such a panel 61 is a plate-shaped component located below the bend section 23.

[0060] <Inner edge water guide channel and inner edge water outlet>

[0061] Next, refer to Figure 3 The inner edge water guide channel 42 and the inner edge water outlet 43 are explained. Figure 3 This is a schematic three-dimensional view showing the inner edge water guide channel 42 and the inner edge water outlet 43.

[0062] like Figure 3 As shown, the inner edge water guide 42 supplies the cleaning water W21 that flows in from the inner edge connecting hole 41.

[0063] The inner edge guide channel 42, in the section between the high-flow outlet 432 and the nearest downstream region A1 of the low-flow outlet 431, has an inclined wall 421 whose top surface slopes upwards towards the downstream. Furthermore, the inner edge guide channel 42, in the section between the high-flow outlet 432 and the nearest downstream region A1 of the low-flow outlet 431, has an inclined wall 422 whose bottom surface slopes downwards towards the downstream. Thus, the inner edge guide channel 42 has a portion whose flow path cross-sectional area S (S1) continuously and gradually expands from the low-flow outlet 431 side (described later), which becomes the inner edge outlet 43, towards the downstream high-flow outlet 432 side. That is, the inner edge guide channel 42 becomes a flow path with a portion that gently expands from the upstream low-flow outlet 431 side towards the downstream high-flow outlet 432 side. It should be noted that the cross-sectional area S of the flow path refers to the cross section cut in the direction orthogonal to the flow direction of the cleaning water W21. In addition, the inner edge guide channel 42 may have inclined walls 421, 422 at least in the nearest downstream region A1 of the low flow outlet 431, but for example, it may also have inclined walls 421, 422 in the entire region from the low flow outlet 431 to the high flow outlet 432.

[0064] As described above, the inner edge outlet 43 is the outlet for the cleaning water W21 in the inner edge water guide 42, supplying the cleaning water W21 flowing in the inner edge water guide 42 to the basin 21. The inner edge outlet 43 has a low flow rate outlet 431 and a high flow rate outlet 432.

[0065] The low-flow-rate outlet 431 is formed in the middle of the flow path of the inner edge guide channel 42, and functions as the inner edge outlet 43 when the flow rate of the cleaning water W21 flowing in the inner edge guide channel 42 is low. The low-flow-rate outlet 431 regulates the flow rate of the cleaning water W21 (W22) when the flow rate of the cleaning water W21 flowing in the inner edge guide channel 42 is low.

[0066] A high-flow-rate outlet 432 is formed at the downstream end of the inner edge guide channel 42, and functions as an inner edge outlet 43 when the cleaning water W21 flowing in the inner edge guide channel 42 is at a high flow rate. The high-flow-rate outlet 432 regulates the flow velocity of the cleaning water W21 (W22) when the cleaning water W21 flowing in the inner edge guide channel 42 is at a high flow rate.

[0067] Thus, the low-flow-rate outlet 431 and the high-flow-rate outlet 432 are formed in the same flow path of the inner edge guide channel 42. In the inner edge guide channel 42, the low-flow-rate outlet 431 is configured on the upstream side and the high-flow-rate outlet 432 is configured on the downstream side. In addition, the flow path cross-sectional area S(S2) of the low-flow-rate outlet 431 is smaller than the flow path cross-sectional area S(S3) of the high-flow-rate outlet.

[0068] The inner edge water guide passage 42 has a stirring chamber 44 disposed upstream of the low flow rate discharge port 431. The flow path cross-sectional area S (S4) of the stirring chamber 44 is larger than the flow path cross-sectional area S2 of the low flow rate discharge port 431. Furthermore, the stirring chamber 44 has a wall portion 441 that is substantially orthogonal to the flow direction of the cleaning water W21, in order to block the flow of the cleaning water W21. The wall portion 441 is provided upstream of the low flow rate discharge port 431 and is configured to face the inner edge communication hole 41.

[0069] In addition, such as Figure 3 As shown, flush toilet 1 (refer to) Figure 1 The pressure speed control unit 45 described above is included. The pressure speed control unit 45 connects the main water passage 31 and the inner edge guide water passage 42, and controls the flow rate of the cleaning water W21 flowing in from the inner edge connecting hole 41 before it flows into the inner edge guide water passage 42. This pressure speed control unit 45 is located in the jet guide water passage 51 (see reference). Figure 2 The upstream side connects the main waterway 31 and the inner guide waterway 42.

[0070] In addition, such as Figure 3As shown, in the inner water guide path 42, the flow path cross-sectional area S2 of the low-flow discharge port 431 is larger than the flow path cross-sectional area S(S5) of the pressure speed control unit 45. Furthermore, the flow path cross-sectional area S3 of the high-flow discharge port 432 is larger than the flow path cross-sectional area S2 of the low-flow discharge port 431. Additionally, the flow path cross-sectional area S4 of the mixing chamber 44 is larger than the flow path cross-sectional area S2 of the low-flow discharge port 431.

[0071] <Flow pattern of cleaning water at low flow outlet>

[0072] Next, refer to Figure 4 and Figure 5 The flow pattern of the cleaning water W21 at the low-flow outlet 431 is described. Figure 4 and Figure 5 This diagram illustrates the cleaning water W21 at the low-flow-rate outlet 431 of the inner edge outlet 43 when the cleaning water W21 flowing through the inner edge guide channel 42 is at a low flow rate. It should be noted that... Figure 4 The diagram schematically illustrates the state of the inner edge water guide channel 42 as viewed from a horizontal direction. Furthermore, in... Figure 5 The diagram schematically shows the state of the designated area A2, which is the upstream side of the inner edge water guide 42, as viewed from the vertical direction (above).

[0073] like Figure 4 As shown, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a low flow rate, it is directed from the inner edge guide channel 42 to the basin 21 (refer to) through the low flow rate discharge port 431 with a small flow path cross-sectional area S2. Figure 2 The flow rate of the supplied cleaning water W21.

[0074] The cleaning water W21, whose flow rate is defined by the low-flow-rate outlet 431, is attracted to the inner surface of the inner edge guide channel 42 due to the wall effect as the flow path of the inner edge guide channel 42 gradually widens towards the downstream high-flow-rate outlet 432, and flows along the shape of the flow path. Therefore, the reduction in the flow rate of the cleaning water W22 supplied from the inner edge outlet 43 (low-flow-rate outlet 431) to the basin 21 can be suppressed.

[0075] In addition, such as Figure 4 As shown, the central axis L (L1) of the flow direction of the cleaning water W21 in the pressure control unit 45 is located above the central axis L (L2) of the flow direction of the cleaning water W21 at the low flow outlet 431. Therefore, the cleaning water W21 accelerated by the pressure control unit 45 will not flow directly into the low flow outlet 431. Furthermore, after the cleaning water W21 accelerated by the pressure control unit 45 flows turbulently and becomes a vortex in the upstream stirring chamber 44, it flows into the low flow outlet 431. As a result, the low flow outlet 431 is more likely to become watertight.

[0076] Furthermore, since the low-flow discharge port 431 is located at the top of the mixing chamber 44, the cleaning water W21, after being accelerated by the pressure control unit 45, does not flow directly into the low-flow discharge port 431. Instead, it flows into the low-flow discharge port 431 after the flow becomes turbulent and forms a vortex in the upstream mixing chamber 44. As a result, the low-flow discharge port 431 is easily made watertight.

[0077] In addition, such as Figure 5 As shown, since the cleaning water W21, which is accelerated by the pressure control unit 45, flows into the low flow discharge port 431 after colliding with the wall 441 located on the upstream side of the low flow discharge port 431, the flow in the mixing chamber 44 becomes turbulent and forms a vortex, making the low flow discharge port 431 prone to becoming watertight.

[0078] <Flow pattern of cleaning water at high flow outlet>

[0079] Next, refer to Figure 6 The flow pattern of the cleaning water W21 at the high-flow-rate outlet 432 is described. Figure 6 This diagram illustrates the cleaning water W21 (W22) at the high-flow-rate outlet 432 of the inner edge outlet 43 when the cleaning water W21 flowing through the inner edge guide channel 42 is at a high flow rate. It should be noted that... Figure 6 The schematic diagram shows the state of the inner edge water guide 42 as viewed from a horizontal direction.

[0080] like Figure 6 As shown, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a high flow rate, it is directed from the inner edge guide channel 42 to the basin 21 (refer to) through the high flow rate discharge port 432 with a large flow path cross-sectional area S3. Figure 2 The flow rate of the supplied cleaning water W22.

[0081] The cleaning water W22 from the high-flow-rate outlet 432 is supplied to the basin 21 at a suppressed flow rate within the inner edge guide channel 42, which gradually widens towards the high-flow-rate outlet 432. Therefore, the flow rate of the cleaning water W22, which is regulated by the high-flow-rate outlet 432, does not increase excessively.

[0082] According to the flushing toilet of the embodiment described above, when the flow rate of the cleaning water W21 flowing through the inner edge guide channel 42 is low, the flushing outlet 431 is switched to serve as the inner edge outlet 43. Therefore, when the flow rate of the cleaning water W21 flowing through the inner edge guide channel 42 is low, the decrease in the flow potential (flow velocity) of the cleaning water W22 supplied from the inner edge outlet 43 (low flow outlet 431) can be suppressed, and the decrease in the cleaning performance of the basin 21 can be suppressed. On the other hand, when the flow rate of the cleaning water W21 flowing through the inner edge guide channel 42 is high, the flushing outlet 432 is switched to serve as the inner edge outlet 43. Therefore, when the flow rate of the cleaning water W21 flowing through the inner edge guide channel 42 is high, the excessive increase in the flow potential (flow velocity) of the cleaning water W22 supplied from the inner edge outlet 43 (high flow outlet 432) can be suppressed, and the splashing of cleaning water W from the basin 21 can be suppressed. In this way, the reduction in cleaning performance and the splashing of cleaning water W can be suppressed regardless of the flow rate of cleaning water W. That is, it can cope with the flow rate of cleaning water W, and therefore can ensure the basic performance of the toilet within a wide range of water supply flow rates.

[0083] Furthermore, the low-flow-rate outlet 431 and the high-flow-rate outlet 432 are formed in the same flow path, and the cross-sectional area S2 of the flow path of the low-flow-rate outlet 431 is smaller than that of the high-flow-rate outlet 432. Therefore, when the cleaning water W21 flowing in the inner edge guide path 42 is at a low flow rate, the flow velocity of the cleaning water W21 supplied to the basin 21 is controlled by the low-flow-rate outlet 431 with its smaller cross-sectional area S2. As a result, when the cleaning water W21 flowing in the inner edge guide path 42 is at a low flow rate, the decrease in the flow velocity of the cleaning water W22 supplied from the inner edge outlet 43 (low-flow-rate outlet 431) can be suppressed, and the decrease in the cleaning performance of the basin 21 can be suppressed. On the other hand, when the cleaning water W21 flowing in the inner edge guide path 42 is at a high flow rate, the flow velocity of the cleaning water W21 supplied to the basin 21 is controlled by the high-flow-rate outlet 432 with its larger cross-sectional area S3. Therefore, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a high flow rate, the excessive increase in the flow rate of the cleaning water W22 supplied from the inner edge outlet 43 (high flow rate outlet 432) can be suppressed, and the cleaning water W can be prevented from splashing out of the basin 21.

[0084] Furthermore, by positioning the low-flow-rate outlet 431 upstream of the high-flow-rate outlet 432, both the low-flow-rate outlet 431 and the high-flow-rate outlet 432 can be formed in the same flow path. Moreover, when the cleaning water W21 flowing through the inner edge guide path 42 is at a low flow rate, supplying cleaning water W22 from the low-flow-rate outlet 431 to the basin 21 can suppress the decrease in the flow velocity of the cleaning water W21 supplied from the inner edge outlet 43 (low-flow-rate outlet 431), thus suppressing a decrease in the cleaning performance of the basin 21. On the other hand, when the cleaning water W21 flowing through the inner edge guide path 42 is at a high flow rate, it can prevent an excessive increase in the flow velocity of the cleaning water W22 supplied from the inner edge outlet 43 (high-flow-rate outlet 432), thus preventing the cleaning water W from splashing out of the basin 21.

[0085] Furthermore, in the interval from the low-flow outlet 431 to the high-flow outlet 432, including at least the nearest downstream region A1 of the low-flow outlet 431, the flow path cross-sectional area S1 of the inner edge guide channel 42 continuously and gradually expands from the low-flow outlet 431 side to the high-flow outlet 432 side. That is, the flow path expands gently from the low-flow outlet 431 on the upstream side to the high-flow outlet 432 on the downstream side. As a result, the cleaning water W21 flowing from the low-flow outlet 431 side to the high-flow outlet 432 side in the inner edge guide channel 42 is attracted to the inner surface of the inner edge guide channel 42 (wall adhesion effect). The cleaning water W21 flows along the flow path shape of the inner edge guide channel 42, thus suppressing water interruption. Therefore, when the cleaning water W21 flowing in the inner edge water guide 42 is at a low flow rate, the decrease in the flow rate of the cleaning water W22 supplied from the inner edge outlet 43 (low flow outlet 431) can be suppressed, and the decrease in the cleaning performance of the basin 21 can be suppressed.

[0086] Furthermore, because the inner edge guide channel has a stirring chamber 44 with a larger flow path cross-sectional area than the low-flow outlet on its upstream side, the flow of cleaning water W21 is turbulent in the stirring chamber 44. Under turbulent flow, cleaning water W21 flows into the low-flow outlet 431, thus making the low-flow outlet 431 more likely to become watertight. Therefore, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a low flow rate, the decrease in the flow velocity of cleaning water W22 supplied from the inner edge outlet 43 (low-flow outlet 431) can be suppressed, and the decrease in the cleaning performance of the basin 21 can be suppressed.

[0087] Furthermore, the inner edge guide channel 42 branches off from the main guide channel 31 upstream of the jet guide channel 51. Therefore, the flow rate of the cleaning water W21 flowing into the inner edge guide channel 42 does not affect the high-velocity jet discharge. In addition, the flow rate of the cleaning water W21 flowing from the main guide channel 31 to the inner edge guide channel 42 can be controlled by the pressure speed control unit 45. Thus, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a low flow rate, the supply of cleaning water W22 to the basin 21 from the low flow rate outlet 431 can suppress the decrease in the flow rate of the cleaning water W22 supplied from the inner edge outlet 43 (low flow rate outlet 431) and suppress the decrease in the cleaning performance of the basin 21. On the other hand, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a high flow rate, it can suppress the excessive increase in the flow rate of the cleaning water W22 supplied from the inner edge outlet 43 (high flow rate outlet 432) and suppress the cleaning water W from splashing out of the basin 21.

[0088] Furthermore, the flow path cross-sectional area S2 of the low-flow discharge port 431 is larger than the flow path cross-sectional area S5 of the pressure speed control unit 45, and the flow path cross-sectional area S3 of the high-flow discharge port 432 and the flow path cross-sectional area S4 of the mixing chamber 44 are both larger than the flow path cross-sectional area S2 of the low-flow discharge port 431. As a result, the distribution of cleaning water between the inner edge discharge and the jet discharge can be determined by the pressure speed control unit 45, and when the cleaning water W21 flowing in the inner edge guide water path 42 is at a low flow rate, the speed of the cleaning water W can be controlled by the small flow path cross-sectional area S2 of the low-flow discharge port 431.

[0089] Furthermore, the central axis L1 of the cleaning water W21 in the pressure control unit 45 is located above the central axis L2 of the cleaning water W21 in the flow direction at the low flow outlet 431. Therefore, the cleaning water W21, after being accelerated by the pressure control unit 45, does not flow directly into the low flow outlet 431. Instead, it flows into the low flow outlet 431 after being disturbed and becoming a vortex in the mixing chamber 44. Thus, the low flow outlet 431 is more likely to become watertight. Therefore, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a low flow rate, the decrease in the flow velocity of the cleaning water W22 supplied from the inner edge outlet 43 (low flow outlet 431) can be suppressed, and the reduction in the cleaning performance of the basin 21 can be suppressed.

[0090] Furthermore, since the mixing chamber 44 has a wall 441 upstream of the low-flow outlet 431, the cleaning water W21, after being accelerated by the pressure control unit 45, collides with the wall 441 and flows into the low-flow outlet 431. Therefore, the low-flow outlet 431 is prone to becoming watertight due to the turbulent flow in the mixing chamber 44. As a result, when the cleaning water W21 flowing in the inner edge guide channel 42 is at a low flow rate, the decrease in the flow velocity of the cleaning water W22 supplied from the inner edge outlet 43 (low-flow outlet 431) can be suppressed, and the decrease in the cleaning performance of the basin 21 can be suppressed.

[0091] <2. Second Implementation>

[0092] Reference Figures 7-13 The flush toilet 1 of the second embodiment will be described. Figure 7 This is a perspective view of the flush toilet 1 according to the second embodiment. Figure 8 This is a top view of the flush toilet 1 according to the second embodiment.

[0093] Figure 9 This is a side view of the flush toilet 1 according to the second embodiment. Figure 10 yes Figure 9 Sectional view IV-IV.

[0094] Figure 11 It means Figure 10 A schematic diagram of the shape of the jet guide channel 20 in the V-V section. Figure 12 It means Figure 10 A schematic diagram of the shape of the jet guide channel 20 in section VI-VI. Figure 13 It means Figure 10 A schematic diagram of the shape of the jet guide channel 20 in section VII-VII.

[0095] In addition, Figure 7 For ease of understanding, a three-dimensional orthogonal coordinate system is illustrated, including the Z-axis with the vertically upward direction as positive. In this orthogonal coordinate system, the positive X-axis direction is defined as left and the negative X-axis direction as right. Similarly, the positive Y-axis direction is defined as forward and the negative Y-axis direction as backward. Furthermore, the X-axis direction is referred to as the left-right direction, the Y-axis direction as the front-back direction, and the Z-axis direction as the up-down direction.

[0096] The flush toilet 1 is installed in the bathroom. The flush toilet 1 is a wall-mounted type installed on the wall of the bathroom. It should be noted that the flush toilet 1 can also be a floor-mounted type installed on the floor of the bathroom.

[0097] The flushing toilet 1 includes a toilet body 2. The flushing toilet 1 includes functional parts installed on the toilet body 2. The functional parts include, for example, a toilet seat, a sanitary cleaning device, a water tank, and a pressure pump.

[0098] The toilet body 2 is made of, for example, ceramic. The toilet body 2 includes a basin 3, an inner rim 4, an inner rim water jet 5, a jet water jet 6, a drain bend 7 (bend), and a mounting part 8. The basin 3 receives the user's waste. The inner rim 4 is formed on the upper edge of the basin 3.

[0099] The inner edge water discharge section 5 includes an inner edge water guide passage 10 and an inner edge water discharge port 11. The inner edge water guide passage 10 is connected to a common water guide passage 15. The common water guide passage 15 is located behind the basin section 3. Cleaning water is supplied from the water storage tank to the common water guide passage 15. The inner edge water guide passage 10 is formed along the inner edge 4 from the rear of the basin section 3 toward the right.

[0100] An inner edge discharge port 11 is formed at the front end of the inner edge water guide passage 10. The inner edge discharge port 11 is formed at the front end of the flow direction of the cleaning water in the inner edge water guide passage 10, that is, at the downstream end of the flow direction of the cleaning water in the inner edge water guide passage 10. The inner edge discharge port 11 is formed on the right side of the inner edge portion 4. The inner edge discharge port 11 discharges the cleaning water flowing in the inner edge water guide passage 10 into the inner edge portion 4. The cleaning water discharged from the inner edge discharge port 11 swirls along the inner edge portion 4 and flows towards the basin portion 3, forming a vortex. The basin portion 3 is cleaned by this vortex. Dirt in the basin portion 3 is flushed towards the bottom of the basin portion 3 by the vortex.

[0101] The jet water discharge section 6 sprays cleaning water from the front of the drain bend 7 toward the drain bend 7. The jet water discharge section 6 includes a jet water guide passage 20 and a jet water discharge port 21. The jet water guide passage 20 is connected to the common water guide passage 15. The jet water guide passage 20 is formed from the rear of the basin 3 toward the left. The jet water guide passage 20 is formed from the rear of the basin 3 toward the lower side along the basin 3.

[0102] The jet water guide channel 20 includes a bend 23 and a contraction 24. The bend 23 is located forward of the drain bend 7. The bend 23 is configured to change the flow of cleaning water in the jet water guide channel 20 from rear to front to front to rear. In the flow direction of the cleaning water flowing in the jet water guide channel 20, the downstream end of the bend 23 is connected to the contraction 24.

[0103] The contraction section 24 is located forward of the drain bend 7. The contraction section 24 is configured such that the cross-sectional area of ​​the section orthogonal to the front-rear direction decreases from the front to the rear. Alternatively, the contraction section 24 may be configured such that the cross-sectional area of ​​the section orthogonal to the flow direction of the cleaning water flowing through the contraction section 24 decreases from the upstream side to the downstream side.

[0104] A jet nozzle 21 is formed at the front end of the jet water guide passage 20. That is, the jet nozzle 21 is formed at the front end of the constriction section 24. The jet nozzle 21 is formed at the front end in the flow direction of the cleaning water in the jet water guide passage 20, that is, at the downstream end in the flow direction of the cleaning water in the jet water guide passage 20. The jet nozzle 21 sprays the cleaning water flowing in the jet water guide passage 20 toward the drain bend 7. The cleaning water sprayed from the jet nozzle 21 entrains the water stored in the basin 3 and flows into the drain bend 7. As a result, the dirt flushed away by the cleaning water discharged from the inner edge nozzle 11 is discharged into the drain bend 7.

[0105] For example, such as Figures 11-13 As shown, the cross-sectional area of ​​the section of the contraction part 24 that is orthogonal to the front-rear direction decreases from the front to the rear. Figure 13 It is a cross-sectional view including the constriction section 24 of the jet nozzle 21.

[0106] Among the cross-sectional areas of the jet guide channel 20, the jet outlet 21 has the smallest cross-sectional area. The width of the top surface 24a of the constriction section 24 gradually decreases from front to rear. The width of the top surface 24a of the constriction section 24 is... Figures 11-13 In the cross-section shown, the numbers W1, W2, and W3 change from front to back.

[0107] Furthermore, the width of the bottom surface 24b of the contraction section 24 gradually decreases from the front to the rear. Figures 11-13 In the cross-section shown, the widths change from front to back as W4, W5, and W6. The widths of the top surface 24a and the bottom surface 24b of the contraction section 24 are the lengths of the top surface 24a and the bottom surface 24b in the left-right direction, respectively.

[0108] The reduction rate of the width of the top surface 24a of the contraction section 24 is smaller than the reduction rate of the width of the bottom surface 24b of the contraction section 24. The reduction rate is the ratio of the width of the cleaning water flowing downstream of the jet guide water passage 20 to the width of the cleaning water flowing upstream of the jet guide water passage 20. The reduction rate is calculated by dividing the width of the cleaning water flowing downstream of the jet guide water passage 20 by the width of the cleaning water flowing upstream of the jet guide water passage 20.

[0109] The width reduction rate r1 of the top surface 24a of the contraction section 24 is W3 / W1. The width reduction rate r2 of the bottom surface 24b of the contraction section 24 is W6 / W4. The width reduction rate r1 of the top surface 24a of the contraction section 24 is smaller than the width reduction rate r2 of the bottom surface 24b of the contraction section 24.

[0110] Furthermore, the narrowing width of the top surface 24a of the contraction section 24 is greater than the narrowing width of the bottom surface 24b of the contraction section 24. The narrowing width is the difference between the width of the cleaning water flowing upstream of the jet guide channel 20 and the width of the cleaning water flowing downstream of the jet guide channel 20. The narrowing width d1 of the top surface 24a of the contraction section 24 is W1–W3. The narrowing width d2 of the bottom surface 24b of the contraction section 24 is W4–W6. The narrowing width d1 of the top surface 24a of the contraction section 24 is greater than the narrowing width d2 of the bottom surface 24b of the contraction section 24.

[0111] Furthermore, the height from the bottom surface 24b of the contraction section 24 to the top surface 24a of the contraction section 24 gradually decreases from front to back. The height from the bottom surface 24b of the contraction section 24 to the top surface 24a of the contraction section 24... Figures 11-13 In the cross-section shown, the values ​​change from front to back as H1, H2, and H3.

[0112] At least one of the side surfaces 24c of the top surface 24a and the bottom surface 24b of the contraction portion 24 forms an acute angle with the top surface 24a of the contraction portion 24. For example, the contraction portion 24 is formed such that the angles between the two side surfaces 24c and the top surface 24a are acute.

[0113] The distance between the sides 24c of the contraction section 24 gradually decreases from front to rear. That is, the distance between the sides 24c of the contraction section 24 gradually decreases as it approaches the jet nozzle 21. The distance between the sides 24c of the contraction section 24 is the distance between two opposite sides 24c.

[0114] The drain trap 7 is connected to the bottom of the basin 3. The drain trap 7 extends from the bottom of the basin 3 to drain the waste inside the basin 3. The drain trap 7 has an ascender pipe 7a and a descender pipe 7b.

[0115] The riser pipe 7a is connected to the lower end of the basin 3. The riser pipe 7a extends obliquely upward from the lower end of the basin 3 toward the side wall, that is, toward the rear.

[0116] The downcomer 7b is connected to the rear end of the riser 7a. The downcomer 7b is connected to the drain pipe installed on the wall via a drain pipe seat.

[0117] The mounting part 8 is located between the basin part 3 and the wall. The mounting part 8 is located at the rear end of the toilet body 2. The mounting part 8 installs the flush toilet 1 to the wall via mounting members. The mounting members are, for example, bolts and nuts.

[0118] The flush toilet 1, by providing a constriction section 24 in which the cross-sectional area of ​​the jet guide channel 20 decreases in the direction of the washing water flow, facilitates changes in the flow velocity of the washing water flowing through the jet guide channel 20. Therefore, the constriction section 24 further subdivides the air within the jet guide channel 20, such as the air contained in the washing water flowing through the jet guide channel 20 and the air accumulated within the jet guide channel 20.

[0119] Furthermore, in the contraction section 24, the contraction rate of the top surface 24a is smaller than that of the bottom surface 24b. Therefore, in the contraction section 24, it is easier for changes in the flow rate of the cleaning water to occur, and the air in the jet guide channel 20 is further subdivided by the contraction section 24.

[0120] Furthermore, since the angle between the top surface 24a and the side surface 24c of the contraction section 24 is an acute angle, the air accumulated between the top surface 24a and the side surface 24c will be subdivided by the slow-flowing cleaning water near the top surface 24a.

[0121] Because the air within the jet guide channel 20 is subdivided, pressure changes within the jet guide channel 20 caused by air breakage are suppressed. This suppresses the generation of abnormal noise from the cleaning water flowing through the jet guide channel 20 and from the cleaning water ejected from the jet nozzle 21.

[0122] The flush toilet 1 includes a basin 3, a drain bend 7, and a jet nozzle 6. The basin 3 collects waste. The drain bend 7 connects to the basin 3 to drain the waste from the basin 3. The jet nozzle 6 sprays cleaning water from the front of the drain bend 7 towards the drain bend 7. The jet nozzle 6 has a jet guide passage 20 and a jet nozzle 21. The jet guide passage 20 is configured to allow cleaning water to flow. The jet nozzle 21 is formed at the front end of the jet guide passage 20, causing the cleaning water to spray towards the drain bend 7. The jet guide passage 20 has a constriction section 24. The cross-sectional area of ​​the constriction section 24 decreases as it approaches the jet nozzle 21. Among the cross-sectional areas of the jet guide passage 20, the cross-sectional area of ​​the jet nozzle 21 is the smallest. The rate of reduction in width of the top surface 24a of the constriction section 24 in the direction of the flow of the cleaning water in the jet water guide channel 20 is smaller than the rate of reduction in width of the bottom surface 24b of the constriction section 24 in the direction of the flow of the cleaning water in the jet water guide channel 20. At least one of the side surfaces 24c of the constriction section 24 forms an acute angle with the top surface 24a of the constriction section 24.

[0123] Therefore, the flushing toilet 1 can subdivide the air within the jet guide path 20 by generating a change in the flow rate of the washing water in the contraction section 24. Furthermore, the flushing toilet 1 can subdivide the air floating on the top surface 24a side of the contraction section 24 by increasing the change in the flow rate of the washing water on the top surface 24a side of the contraction section 24. Additionally, the flushing toilet 1 can subdivide the air accumulated between the top surface 24a and the side surface 24c by using the slower-flowing washing water near the top surface 24a by setting the angle between the side surface 24c and the top surface 24a of the contraction section 24 to an acute angle. Therefore, the flushing toilet 1 can suppress pressure changes in the jet guide path 20 and suppress the generation of abnormal noise.

[0124] The jet water guide 20 has a bend 23. The bend 23 is connected to the contraction 24 and changes the flow direction of the cleaning water from rear to front to front to rear.

[0125] Therefore, the flushing toilet 1 can subdivide the air in the contraction section 24 located downstream of the bend 23 in the flow direction of the cleaning water flowing in the jet guide channel 20. Thus, the flushing toilet 1 can eject cleaning water containing the subdivided air from the jet nozzle 21. Therefore, the flushing toilet 1 can suppress the generation of abnormal noise caused by the cleaning water ejected from the jet nozzle 21.

[0126] The distance between the top surface 24a and the bottom surface 24b of the contraction section 24 gradually decreases as it approaches the jet nozzle 21.

[0127] Therefore, the flushing toilet 1 can suppress the generation of abnormal noise in the jet guide path 20, and spray cleaning water with less deviation in the vertical direction from the jet nozzle 21. Thus, the flushing toilet 1 can suppress the generation of abnormal noise and suppress the reduction in waste discharge caused by the cleaning water sprayed from the jet nozzle 21.

[0128] The distance between the sides 24c of the contraction section 24 gradually decreases as it approaches the jet outlet 21.

[0129] Therefore, the flushing toilet 1 can suppress the generation of abnormal noise in the jet water guide path 20, and spray cleaning water with less deviation in the left and right directions from the jet nozzle 21. Thus, the flushing toilet 1 can suppress the generation of abnormal noise and suppress the reduction in the discharge of waste achieved by the cleaning water sprayed from the jet nozzle 21.

[0130] In a modified flushing toilet 1, the cross-sectional area of ​​the bend 23 decreases as it approaches the jet nozzle 21. In another modified flushing toilet 1, the cross-sectional area of ​​the jet guide path 20, located upstream of the bend 23, also decreases as it approaches the jet nozzle 21. That is, the contraction section 24 may include the bend 23 and the jet guide path 20, located upstream of the bend 23.

[0131] Therefore, the modified flushing toilet 1 can subdivide the air within the jet water guide path 20. Thus, the modified flushing toilet 1 can suppress pressure changes within the jet water guide path 20 and suppress the generation of abnormal noise.

[0132] In the modified flushing toilet 1, at least one side of the curved portion 23 may form an acute angle with the top surface of the curved portion 23. Furthermore, in the modified flushing toilet 1, at least one side of the jet guide channel 20 upstream of the curved portion 23 may form an acute angle with the top surface of the jet guide channel 20. Additionally, in the modified flushing toilet 1, the angle between the side 24c of the constriction portion 24 and the top surface 24a of the constriction portion 24 may not be acute. For example, the side 24c of the constriction portion 24 may be orthogonal to the top surface 24a of the constriction portion 24. That is, it is sufficient that at least one side of the jet guide channel 20 forms an acute angle with the top surface of the jet guide channel 20.

[0133] Therefore, the modified flushing toilet 1 can subdivide the air accumulated between the top surface and the side surface of the jet water guide channel 20. Thus, the modified flushing toilet 1 can suppress pressure changes in the jet water guide channel 20 and suppress the generation of abnormal noise.

[0134] In a modified flush toilet 1, the top surface 24a of the constriction portion 24 may protrude downwards. For example, the top surface 24a of the constriction portion 24 may be formed such that the center of the top surface 24a protrudes downwards in the left-right direction. In this case, the width of the top surface 24a is the length of the top surface 24a including the protruding portion in the left-right direction.

[0135] <3. Third Implementation>

[0136] Reference Figures 14-18 To illustrate the flush toilet 1 of the third embodiment. Figure 14 This is a perspective view of the flush toilet 1 according to the third embodiment. Figure 15 This is a top view of the flush toilet 1 according to the third embodiment.

[0137] Figure 16 This is a side view of the flush toilet 1 according to the third embodiment. Figure 17 This is a rear view of the flush toilet 1 according to the third embodiment. Figure 18 yes Figure 17 V-V sectional view. Figure 19 yes Figure 17 Sectional view VI-VI.

[0138] In addition, Figure 14 For ease of understanding, a three-dimensional orthogonal coordinate system is illustrated, including the Z-axis with the vertically upward direction as positive. In this orthogonal coordinate system, the positive X-axis direction is defined as left and the negative X-axis direction as right. Similarly, the positive Y-axis direction is defined as forward and the negative Y-axis direction as backward. Furthermore, the X-axis direction is referred to as the left-right direction, the Y-axis direction as the front-back direction, and the Z-axis direction as the up-down direction.

[0139] A flushing toilet 1 is installed in the bathroom. The flushing toilet 1 is a wall-mounted type installed on the wall of the bathroom. The flushing toilet 1 has a toilet body 2. The flushing toilet 1 has functional parts installed on the toilet body 2. The functional parts include, for example, a toilet seat, a sanitary cleaning device, a water tank, and a pressure pump.

[0140] The toilet body 2 is made of, for example, ceramic. The toilet body 2 includes a basin 3, an inner rim 4, a drain bend 5 (bend), a drain pipe seat 6, a drain flange 7, a mounting part 8, and a curtain panel 9. The basin 3 receives the user's waste. The inner rim 4 is formed on the upper edge of the basin 3.

[0141] The drain trap 5 is connected to the bottom of the basin 3. The drain trap 5 extends from the bottom of the basin 3 to drain the waste inside the basin 3. The drain trap 5 has an ascender pipe 5a and a descender pipe 5b.

[0142] The riser pipe 5a is connected to the lower end of the basin 3. The riser pipe 5a extends obliquely upward from the lower end of the basin 3 toward the side wall, that is, toward the rear.

[0143] Downcomer 5b connects riser 5a to drain pipe seat 6. Downcomer 5b is connected to the rear end of riser 5a. Downcomer 5b extends diagonally downward from the upper end of riser 5a toward drain pipe seat 6. Drain bend 5 is configured such that the lower end of riser 5a is below the lower end of downcomer 5b. It should be noted that drain bend 5 can also be configured such that the lower end of riser 5a is above the lower end of downcomer 5b. Drain bend 5 can also be configured such that the lower end of riser 5a is at the same height as the lower end of downcomer 5b.

[0144] The drain pipe seat 6 is connected to the rear end of the downcomer 5b. The drain pipe seat 6 is connected to the drain pipe installed on the wall. That is, the drain pipe seat 6 connects the drain bend 5 to the drain pipe. The drain pipe seat 6 is located below the first virtual center line L1 in the vertical direction of the mounting part 8.

[0145] The drain flange 7 is located around the drain pipe seat 6. The drain flange 7 is located forward of the rear end of the drain pipe seat 6. The drain flange 7 is located below the first virtual center line L1.

[0146] The mounting part 8 is located between the basin part 3 and the wall surface. The mounting part 8 is located at the rear end of the toilet body 2. The mounting part 8 mounts the flushing toilet 1 to the wall surface via mounting members. The mounting members are, for example, bolts and nuts. The mounting part 8 has at least two mounting holes 10. Specifically, the mounting part 8 has at least four mounting holes 10. It should be noted that there may be three or more mounting holes 10. Bolts are inserted into the mounting holes 10, for example.

[0147] For example, the mounting section 8 is provided with four mounting holes 10. The four mounting holes 10 include two first mounting holes 10a and two second mounting holes 10b. It should be noted that the four mounting holes 10 may include three first mounting holes 10a and one second mounting hole 10b.

[0148] The first mounting hole 10a is located above the first virtual center line L1. The first mounting holes 10a are located at both ends in the left and right directions. The first mounting holes 10a are positioned across the second virtual center line L2 in the left and right directions from the mounting part 8. The second virtual center line L2 can be the center line of the drain bend 5 in the left and right directions. The second virtual center line L2 can also be the center line of the toilet body 2 in the left and right directions.

[0149] The second mounting hole 10b is located below the first mounting hole 10a. The second mounting hole 10b is located below the first virtual center line L1. The second mounting holes 10b are located on both ends in the left and right directions. The second mounting holes 10b are located across the second virtual center line L2.

[0150] The mounting portion 8 includes a first wall thickness region A1 having the wall thickness surrounding the first mounting hole 10a and a second wall thickness region A2 having the wall thickness surrounding the second mounting hole 10b. The wall thickness is the thickness of the mounting portion 8 in the front-rear direction (Y-axis direction). The wall thickness of the second wall thickness region A2 is thinner than the wall thickness of the first wall thickness region A1. That is, the wall thickness around the second mounting hole 10b is thinner than the wall thickness around the first mounting hole 10a.

[0151] A first wall thickness region A1 is provided on the upper side of the mounting portion 8. The first wall thickness region A1 includes the area around the first mounting hole 10a. The first wall thickness region A1 is configured to extend in the left-right direction.

[0152] The second wall thickness region A2 is located below the first wall thickness region A1. The second wall thickness region A2 includes the area around the second mounting hole 10b. The second wall thickness region A2 is configured to extend in the left-right direction. When viewed from the side of the basin 3 (front side) of the mounting portion 8, the second wall thickness region A2 is larger than the first wall thickness region A1.

[0153] The second wall thickness region A2 is set up to the bottom of the drain bend 5. That is, the mounting part 8 is set so that its lower end is below the lower end of the drain bend 5. The lower end of the mounting part 8 is located below the lower end of the riser pipe 5a and the lower end of the fallr pipe 5b of the drain bend 5.

[0154] The curtain panel 9 connects the drain bend 5 and the mounting part 8. The curtain panel 9 is connected to the mounting part 8 in the second wall thickness region A2, which is located below the downcomer 5b. The curtain panel 9 is configured to include a second virtual center line L2. The curtain panel 9 is configured to extend from the mounting part 8 to the lower end of the riser 5a of the drain bend 5. The curtain panel 9 is connected to the drain bend 5 along its lower end. It should be noted that a portion of the curtain panel 9 may not be connected to the lower end of the drain bend 5.

[0155] Multiple curtain panels 9 can be provided. Curtain panels 9 can be configured to exclude the second virtual center line L2. For example, multiple curtain panels 9 can be provided across the second virtual center line L2.

[0156] Regarding the wall-mounted flushing toilet 1, the load applied around the mounting member inserted into the first mounting hole 10a is large due to the torque. The flushing toilet 1 ensures its strength by providing a thick first wall region A1 around the first mounting hole 10a. Furthermore, the flushing toilet 1 is reliably fixed to the wall surface by the mounting member inserted into the second mounting hole 10b.

[0157] A flushing toilet 1 is installed on a wall. The flushing toilet 1 has a basin 3 and a mounting part 8. The basin 3 receives waste. The mounting part 8 is located between the basin 3 and the wall, and the flushing toilet 1 is installed on the wall via a mounting member. The mounting part 8 has at least two mounting holes 10. The wall thickness around the second mounting hole 10b on the lower side is thinner than the wall thickness around the first mounting hole 10a on the upper side.

[0158] Therefore, the thick wall around the first mounting hole 10a ensures the strength of the toilet 1 against loads generated by torque. Thus, the toilet 1 maintains its load-bearing capacity. Furthermore, the toilet 1 can be made lighter by making the wall around the second mounting hole 10b thinner than the wall around the first mounting hole 10a. In other words, the toilet 1 maintains its load-bearing capacity while remaining lightweight.

[0159] Furthermore, the lightweight design of the toilet 1 makes installation on the wall easier. Additionally, the lightweight design reduces the torque generated during wall installation.

[0160] The mounting part 8 has at least four mounting holes 10. The second mounting hole 10b of the mounting holes 10 is located below the first virtual center line L1 of the mounting part 8 in the vertical direction.

[0161] Thus, the flush toilet 1 is stably installed on the wall by the mounting member inserted into the second mounting hole 10b.

[0162] The flush toilet 1 includes a drain trap 5, a drain pipe seat 6, and a drain flange 7. The drain trap 5 communicates with the basin 3 to drain waste from the basin. The drain pipe seat 6 connects the drain trap 5 to a drain pipe located on the wall. The drain flange 7 is located around the drain pipe seat 6. The drain flange 7 is located below the first virtual center line L1.

[0163] Therefore, the flushing toilet 1 can reduce the torque applied to the drain flange 7.

[0164] The mounting portion 8 includes a first wall thickness region A1 and a second wall thickness region A2. The first wall thickness region A1 has the wall thickness around the first mounting hole 10a. The second wall thickness region A2 has the wall thickness around the second mounting hole 10b. When the mounting portion 8 is viewed from the basin portion 3 side, the second wall thickness region A2 is larger than the first wall thickness region A1.

[0165] As a result, the flushing toilet 1 can be made lighter. The flushing toilet 1 makes installation on the wall easier. In addition, when the flushing toilet 1 is installed on the wall, the torque generated by the flushing toilet 1 can be further reduced.

[0166] The flush toilet 1 includes a panel 9. The panel 9 connects a drain bend 5 to a mounting part 8. The drain bend 5 includes an ascender pipe 5a and a descender pipe 5b. The ascender pipe 5a extends obliquely upward from the lower end of the basin 3 toward the wall. The descender pipe 5b connects the ascender pipe 5a to a drain pipe seat 6, extending obliquely downward from the upper end of the ascender pipe 5a toward the drain pipe seat 6. The panel 9 is connected to the mounting part 8, which is located below the descender pipe 5b.

[0167] Therefore, the flushing toilet 1 can increase its strength relative to the moment through the curtain panel 9. Thus, the flushing toilet 1 can improve its load-bearing capacity. Furthermore, the flushing toilet 1 can improve the strength of the second wall thickness region A2 by connecting the curtain panel 9 to the second wall thickness region A2.

[0168] One embodiment aims to provide a flushing toilet that can cope with changes in the flow rate of the flushing water and ensure the basic performance of the toilet within a wide range of water supply flow rates.

[0169] One embodiment of the flush toilet includes: a basin for receiving waste; a curved section extending from the basin for discharging waste received by the basin; a main water passage for supplying cleaning water toward the basin; an inner rim connecting hole for receiving cleaning water from the main water passage; an inner rim guide water passage for supplying cleaning water flowing from the inner rim connecting hole; and an inner rim outlet for supplying the cleaning water flowing in the inner rim guide water passage to the basin, the inner rim outlet having: a low-flow outlet, which becomes the inner rim outlet when the flow of cleaning water in the inner rim guide water passage is low; and a high-flow outlet, which becomes the inner rim outlet when the flow of cleaning water in the inner rim guide water passage is high.

[0170] Based on this configuration, when the flow rate of the cleaning water flowing through the inner edge guide channel is low, a low-flow outlet is used as the inner edge outlet. This prevents a decrease in the flow rate of the cleaning water supplied from the inner edge outlet (low-flow outlet) when the flow rate of the cleaning water flowing through the inner edge guide channel is low, thus preventing a decrease in the cleaning performance of the basin. On the other hand, when the flow rate of the cleaning water flowing through the inner edge guide channel is high, a high-flow outlet is used as the inner edge outlet. This prevents an excessive increase in the flow rate of the cleaning water supplied from the inner edge outlet (high-flow outlet) when the flow rate of the cleaning water flowing through the inner edge guide channel is high, thus preventing cleaning water from splashing out of the basin. In this way, the decrease in cleaning performance and the splashing of cleaning water can be suppressed regardless of changes in the flow rate of the cleaning water; that is, it can cope with changes in the flow rate of the cleaning water, and therefore, the basic performance of the toilet can be guaranteed over a wide range of water supply flow rates.

[0171] Furthermore, in the aforementioned flush toilet, the low-flow outlet and the high-flow outlet are formed in the same flow path, and the cross-sectional area of ​​the flow path of the low-flow outlet is smaller than that of the high-flow outlet.

[0172] Based on this configuration, when the flow rate of the cleaning water flowing through the inner edge guide channel is low, the flow velocity of the cleaning water supplied to the basin is controlled by a low-flow outlet with a small cross-sectional area. Therefore, when the flow rate of the cleaning water W flowing through the inner edge guide channel is low, the decrease in the flow velocity of the cleaning water supplied from the inner edge outlet (low-flow outlet) can be suppressed, thus preventing a decrease in the cleaning performance of the basin. On the other hand, when the flow rate of the cleaning water flowing through the inner edge guide channel is high, the flow velocity of the cleaning water supplied to the basin is controlled by a high-flow outlet with a large cross-sectional area. Therefore, when the flow rate of the cleaning water flowing through the inner edge guide channel is high, an excessive increase in the flow velocity of the cleaning water supplied from the inner edge outlet (high-flow outlet) can be suppressed, thus preventing cleaning water from splashing out of the basin.

[0173] Furthermore, in the aforementioned flush toilet, the low-flow outlet is positioned upstream of the high-flow outlet.

[0174] With this configuration, both low-flow and high-flow discharge ports can be formed in the same flow path. Furthermore, when the cleaning water W flowing through the inner edge guide path is at a low flow rate, supplying cleaning water to the basin from the low-flow discharge port can suppress the decrease in the flow velocity of the cleaning water supplied from the inner edge discharge port (low-flow discharge port), thus suppressing a decrease in the cleaning performance of the basin. On the other hand, when the cleaning water flowing through the inner edge guide path is at a high flow rate, it can prevent an excessive increase in the flow velocity of the cleaning water supplied from the inner edge discharge port (high-flow discharge port), thus preventing cleaning water from splashing out of the basin.

[0175] Furthermore, in the aforementioned flush toilet, in the interval between the low-flow outlet and the high-flow outlet, including at least the nearest downstream region of the low-flow outlet, the cross-sectional area of ​​the inner edge guide channel continuously and gradually increases as it moves from the low-flow outlet side towards the high-flow outlet side.

[0176] According to this configuration, in the section between the low-flow-rate outlet and the high-flow-rate outlet, including at least the nearest downstream area of ​​the low-flow-rate outlet, the flow path of the inner edge guide channel gradually widens from the low-flow-rate outlet side upstream to the high-flow-rate outlet side downstream. As a result, the cleaning water flowing through the inner edge guide channel from the low-flow-rate outlet side to the high-flow-rate outlet side is attracted to the inner surface of the inner edge guide channel (wall adhesion effect), and the cleaning water flows along the flow path shape of the inner edge guide channel, thus suppressing water interruption. Therefore, even when the cleaning water flowing through the inner edge guide channel is at a low flow rate, the reduction in the flow velocity of the cleaning water supplied from the inner edge outlet (low-flow-rate outlet) can be suppressed, and the reduction in the cleaning performance of the basin can be suppressed.

[0177] Furthermore, in the aforementioned flush toilet, the inner edge water guide has a stirring chamber with a flow path cross-sectional area larger than that of the low-flow outlet on the upstream side.

[0178] Based on this configuration, the flow of cleaning water is turbulent in the mixing chamber. Under this turbulent flow, the cleaning water flows into the low-flow-rate outlet, thus making the low-flow-rate outlet watertight. Consequently, when the cleaning water flowing in the inner edge guide channel is at a low flow rate, the decrease in the flow velocity of the cleaning water supplied from the inner edge outlet (low-flow-rate outlet) can be suppressed, thereby suppressing the reduction in the cleaning performance of the basin.

[0179] Furthermore, the aforementioned flush toilet also includes: a jet guide channel for supplying cleaning water from the main water channel; a jet nozzle for spraying the cleaning water flowing through the jet guide channel from the front of the bend towards the bend; and a pressure control unit that connects the main water channel and the inner edge guide channel on the upstream side of the jet guide channel.

[0180] With this configuration, the inner edge guide channel branches off from the main channel upstream of the jet guide channel. Therefore, the flow rate of the cleaning water flowing into the inner edge guide channel does not affect the high-velocity jet discharge. Furthermore, the flow rate of the cleaning water flowing from the main channel to the inner edge guide channel can be controlled by a pressure speed control unit. Thus, when the cleaning water flowing in the inner edge guide channel is at a low flow rate, supplying cleaning water to the basin from the low-flow-rate outlet can suppress the decrease in the flow rate of the cleaning water supplied from the inner edge outlet (low-flow-rate outlet), thereby suppressing a decrease in the cleaning performance of the basin. On the other hand, when the cleaning water flowing in the inner edge guide channel is at a high flow rate, it can prevent an excessive increase in the flow rate of the cleaning water supplied from the inner edge outlet (high-flow-rate outlet), thereby suppressing the splashing of cleaning water from the basin.

[0181] Furthermore, in the aforementioned flush toilet, the inner edge water guide has a stirring chamber upstream of the low-flow outlet, the flow path cross-sectional area of ​​the low-flow outlet is larger than the flow path cross-sectional area of ​​the pressure control unit, and the flow path cross-sectional areas of the high-flow outlet and the stirring chamber are larger than the flow path cross-sectional area of ​​the low-flow outlet.

[0182] Based on this configuration, the distribution of cleaning water between the inner edge water discharge and the jet water discharge can be determined by the pressure speed control unit, and when the cleaning water flowing in the inner edge guide channel is at a low flow rate, the speed of the cleaning water can be controlled by the small flow path cross-sectional area of ​​the low flow discharge port.

[0183] Furthermore, in the aforementioned flush toilet, the central axis of the cleaning water flow direction of the pressure control unit is located above the central axis of the cleaning water flow direction of the low-flow outlet.

[0184] Based on this configuration, the cleaning water, after being accelerated by the pressure control section, does not flow directly into the low-flow-rate outlet. Instead, it flows into the low-flow-rate outlet after being turbulently swirled in the mixing chamber. Therefore, the low-flow-rate outlet is more likely to become watertight. Consequently, when the cleaning water flowing in the inner edge guide channel is at a low flow rate, the decrease in the flow velocity of the cleaning water supplied from the inner edge outlet (low-flow-rate outlet) can be suppressed, thus preventing a decrease in the cleaning performance of the basin.

[0185] Furthermore, in the aforementioned flush toilet, the inner edge water guide has a stirring chamber with a flow path cross-sectional area larger than that of the low-flow outlet on the upstream side, and the stirring chamber has a wall on the upstream side of the low-flow outlet.

[0186] Based on this configuration, the increased pressure (accelerated speed) of the cleaning water in the pressure control section collides with the wall and flows into the low-flow outlet. Therefore, the flow in the mixing chamber becomes turbulent and forms a vortex, making the low-flow outlet watertight. Consequently, when the cleaning water flowing through the inner edge guide channel is at a low flow rate, the decrease in the flow velocity of the cleaning water supplied from the inner edge outlet (low-flow outlet) can be suppressed, thus preventing a decrease in the cleaning performance of the basin.

[0187] According to one embodiment, a flushing toilet can cope with changes in the flow rate of the flushing water and can ensure the basic performance of the toilet within a wide range of water supply flow rates.

[0188] One embodiment aims to provide a flush toilet that suppresses the generation of abnormal noise.

[0189] One embodiment of the flush toilet includes a basin, a bend, and a jet nozzle. The basin receives waste. The bend communicates with the basin to drain waste from the basin. The jet nozzle sprays flushing water from the front of the bend toward the bend. The jet nozzle has a jet guide passage and a jet nozzle. The jet guide passage is configured to allow flushing water to flow. The jet nozzle is formed at the front end of the jet guide passage, causing flushing water to spray toward the bend. The jet guide passage has a constriction section. The cross-sectional area of ​​the constriction section decreases as it approaches the jet nozzle. The jet nozzle has the smallest cross-sectional area among the cross-sectional areas of the jet guide passage. The rate of reduction of the width of the top surface of the constriction section in the flow direction of the flushing water in the jet guide passage is smaller than the rate of reduction of the width of the bottom surface of the constriction section in the flow direction. At least one side of the jet guide passage forms an acute angle with the top surface of the jet guide passage.

[0190] Therefore, the flushing toilet can subdivide the air within the jet guide path by creating a change in the flow rate of the flushing water in the contraction section. Furthermore, the flushing toilet can subdivide the air floating on the top surface of the contraction section by increasing the change in the flow rate of the flushing water on the top surface of the contraction section. Additionally, the flushing toilet can subdivide the air accumulated between the top and sides of the jet guide path by using the slower-flowing flushing water near the top surface, by setting the angle between the side and top surfaces of the jet guide path to an acute angle. Therefore, the flushing toilet can suppress pressure changes in the jet guide path and suppress the generation of abnormal noise.

[0191] In addition, the jet water guide channel has a bend. The bend connects to the constriction section, changing the flow direction of the cleaning water from rear to front to front to rear.

[0192] Therefore, the flushing toilet can subdivide the air by a contraction section located downstream of the bend in the flow direction of the cleaning water flowing in the jet guide path. Consequently, the flushing toilet can eject cleaning water containing the subdivided air from the jet nozzle. Therefore, the flushing toilet can suppress the generation of abnormal noise caused by the cleaning water ejected from the jet nozzle.

[0193] Furthermore, at least one of the sides of the contraction section has an acute angle with the top surface of the contraction section.

[0194] Therefore, flushing toilets can break down the air trapped between the top and sides of the contraction section by using slow-flowing flushing water near the top surface. This helps suppress pressure changes within the contraction section and reduce abnormal noise.

[0195] Furthermore, the distance between the top and bottom surfaces of the contraction section gradually decreases as it approaches the jet nozzle.

[0196] Therefore, flushing toilets can suppress the generation of abnormal noise in the jet water path and spray cleaning water with less vertical deviation from the jet nozzle. Thus, flushing toilets can suppress the generation of abnormal noise and reduce the reduction in waste discharge caused by the cleaning water sprayed from the jet nozzle.

[0197] Furthermore, the distance between the sides of the contraction section gradually decreases as it approaches the jet nozzle.

[0198] Therefore, the flushing toilet can suppress the generation of abnormal noise in the jet water guide path and spray cleaning water with less deviation in the left and right direction from the jet nozzle. Thus, the flushing toilet can suppress the generation of abnormal noise and reduce the reduction in waste discharge caused by the cleaning water sprayed from the jet nozzle.

[0199] According to one embodiment, the generation of abnormal noise can be suppressed.

[0200] One embodiment aims to provide a flush toilet that maintains load-bearing capacity while being lightweight.

[0201] One embodiment of the flushing toilet is mounted on a wall. The flushing toilet includes a basin and a mounting portion. The basin receives waste. The mounting portion is located between the basin and the wall, and the flushing toilet is mounted to the wall via a mounting member. The mounting portion has at least two mounting holes. The wall thickness around the mounting hole on the lower side is thinner than the wall thickness around the mounting hole on the upper side.

[0202] Therefore, the thicker wall around the mounting hole on the upper side ensures the strength of the flushing toilet against loads generated by torque. Thus, the flushing toilet maintains its load-bearing capacity. Furthermore, the flushing toilet can be made lighter by making the wall thickness around the mounting hole on the lower side thinner than that around the mounting hole on the upper side. That is, the flushing toilet maintains its load-bearing capacity while being lightweight. In addition, the lightweight design makes installation on the wall easier. Moreover, when installed on the wall, the lighter weight reduces the torque generated during flushing.

[0203] In addition, the mounting part has at least four mounting holes. At least one mounting hole is located below the virtual center line of the mounting part in the vertical direction.

[0204] Thus, the flushing toilet is stably installed on the wall by a mounting component inserted into a mounting hole located below the virtual center line of the mounting part.

[0205] In addition, a flush toilet includes a U-bend, a drain fitting, and a drain flange. The U-bend connects to the basin to drain waste from the basin. The drain fitting connects the U-bend to a drain pipe located on the wall. The drain flange is located around the drain fitting and is positioned below the virtual center line.

[0206] Therefore, flush toilets can reduce the torque applied to the drain flange.

[0207] Furthermore, the mounting section includes a first wall thickness region and a second wall thickness region. The first wall thickness region has the wall thickness around the mounting hole on the upper side. The second wall thickness region has the wall thickness around the mounting hole on the lower side. When viewing the mounting section from the basin side, the second wall thickness region is larger than the first wall thickness region.

[0208] As a result, flush toilets can be made lighter. Flush toilets also make installation on walls easier. Furthermore, when installed on a wall, the torque generated during flushing can be further reduced.

[0209] In addition, the flush toilet has a shroud. The shroud connects the bend to the mounting section. The bend includes an uppipe and a downpipe. The uppipe extends diagonally upwards from the lower end of the basin towards the wall. The downpipe connects the uppipe to the drain pipe seat, extending diagonally downwards from the upper end of the uppipe towards the drain pipe seat. The shroud is connected to the mounting section located below the downpipe.

[0210] Therefore, the flushing toilet can increase its strength relative to moment through the curtain panel. Thus, the flushing toilet can improve its load-bearing capacity. Furthermore, the flushing toilet can increase the strength of the second wall thickness area by connecting the curtain panel to the second wall thickness area.

[0211] According to one embodiment, load-bearing performance can be maintained while reducing weight.

[0212] Supplementary Explanation (1-1):

[0213] A flush toilet, characterized in that it comprises:

[0214] The basin serves to collect waste;

[0215] A bend, extending from the basin, is used to drain waste collected by the basin;

[0216] A main water channel supplies cleaning water toward the basin.

[0217] An inner edge connecting hole allows cleaning water to flow in from the main water passage;

[0218] An inner edge water guide channel for the flow of cleaning water entering from the inner edge connecting hole; and

[0219] The inner edge water outlet supplies the cleaning water flowing through the inner edge water guide channel to the basin.

[0220] The inner edge water outlet has:

[0221] A low-flow-rate outlet is defined as an inner-edge outlet when the flow of cleaning water in the inner-edge guide channel is low; and

[0222] A high-flow-rate outlet is an inner-edge outlet when the cleaning water flowing through the inner-edge water guide is at a high flow rate.

[0223] Supplementary Explanation (1-2):

[0224] According to the supplementary description (1-1), the flush toilet is characterized in that,

[0225] The low-flow-rate outlet and the high-flow-rate outlet are formed in the same flow path.

[0226] The flow path cross-sectional area of ​​the low-flow-rate discharge port is smaller than that of the high-flow-rate discharge port.

[0227] Supplementary notes (1-3):

[0228] According to the supplementary description (1-2), the flush toilet is characterized in that,

[0229] The low-flow-rate outlet is positioned upstream of the high-flow-rate outlet.

[0230] Supplementary notes (1-4):

[0231] According to the supplementary description (1-3), the flush toilet is characterized in that,

[0232] In the interval between the low-flow-rate outlet and the high-flow-rate outlet, including at least the nearest downstream region of the low-flow-rate outlet, the cross-sectional area of ​​the inner edge guide channel continuously and gradually increases as it moves from the low-flow-rate outlet side towards the high-flow-rate outlet side.

[0233] Supplementary notes (1-5):

[0234] According to the supplementary description (1-2), the flush toilet is characterized in that,

[0235] The inner edge water guide has a stirring chamber with a flow path cross-sectional area larger than that of the low flow outlet on the upstream side.

[0236] Supplementary notes (1-6):

[0237] The flushing toilet described in Supplementary Explanation (1-2) is characterized by further comprising:

[0238] A jet water guide channel is provided for the flow of cleaning water from the main water channel;

[0239] The spray nozzle directs the cleaning water flowing through the spray guide path from the front of the bend towards the bend; and

[0240] The pressure control unit connects the main water passage and the inner edge water passage on the upstream side of the jet guide water passage.

[0241] Supplementary notes (1-7):

[0242] According to the supplementary description (1-6), the flush toilet is characterized in that,

[0243] The inner edge water guide channel has a stirring chamber on the upstream side compared to the low flow rate outlet.

[0244] The cross-sectional area of ​​the flow path of the low-flow outlet is larger than that of the flow path of the pressure speed control unit.

[0245] The cross-sectional area of ​​the flow path of the high-flow-rate outlet and the mixing chamber is larger than that of the low-flow-rate outlet.

[0246] Supplementary notes (1-8):

[0247] According to the supplementary description (1-6), the flush toilet is characterized in that,

[0248] The central axis of the pressure speed control unit in the direction of the flow of the cleaning water is located above the central axis of the flow of the cleaning water in the direction of the low flow outlet.

[0249] Supplementary notes (1-9):

[0250] According to the supplementary description (1-8), the flush toilet is characterized in that,

[0251] The inner edge water guide channel has a stirring chamber with a larger cross-sectional area than the low-flow outlet on the upstream side.

[0252] The mixing chamber has a wall on the upstream side of the low-flow discharge port.

[0253] Supplementary Explanation (2-1):

[0254] A flush toilet, comprising:

[0255] The basin serves to collect waste;

[0256] The bend in the pipe communicates with the basin to drain waste from the basin; and

[0257] The spray nozzle causes cleaning water to be sprayed out from the front of the bend towards the bend.

[0258] The water jetting section has:

[0259] A jet water guide channel is formed to allow the cleaning water to flow; and

[0260] A spray nozzle is formed at the front end of the spray guide channel, causing the cleaning water to be sprayed towards the bend in the pipe.

[0261] The jet water guide channel has a constricted section whose cross-sectional area decreases as it approaches the jet outlet.

[0262] Among the cross-sectional areas of the jet water guide channels, the cross-sectional area of ​​the jet outlet is the smallest.

[0263] The rate of reduction of the width of the top surface of the constriction section in the flow direction of the cleaning water in the jet water guide path is smaller than the rate of reduction of the width of the bottom surface of the constriction section in the flow direction.

[0264] At least one side of the jet water guide path has an acute angle with the top surface of the jet water guide path.

[0265] Supplementary Explanation (2-2):

[0266] According to the supplementary explanation (2-1) regarding the flush toilet, among which,

[0267] The jet water guide has a curved section, which is connected to the contraction section, and changes the flow direction of the cleaning water from rear to front to front to rear.

[0268] Supplementary explanations (2-3):

[0269] According to the supplementary explanation (2-1) regarding the flush toilet, among which,

[0270] At least one of the sides of the contraction section forms an acute angle with the top surface of the contraction section.

[0271] Supplementary notes (2-4):

[0272] According to any one of the supplementary instructions (2-1) to (2-3), the flush toilet, wherein,

[0273] The distance between the top surface and the bottom surface of the contraction section gradually decreases as it approaches the spray nozzle.

[0274] Supplementary notes (2-5):

[0275] According to any one of the supplementary instructions (2-1) to (2-3), the flush toilet, wherein,

[0276] The distance between the sides of the contraction section gradually decreases as it approaches the spray nozzle.

[0277] Supplementary Explanation (3-1):

[0278] A flushing toilet, installed on a wall, the flushing toilet comprising:

[0279] The basin is for collecting waste; and

[0280] An installation section is located between the basin and the wall surface, and the flushing toilet is installed on the wall surface via installation components.

[0281] The mounting part has at least two mounting holes.

[0282] The wall thickness around the mounting hole on the lower side is thinner than the wall thickness around the mounting hole on the upper side.

[0283] Supplementary Explanation (3-2):

[0284] According to the supplementary explanation (3-1) regarding the flush toilet, among which,

[0285] The mounting part has at least four mounting holes.

[0286] At least one mounting hole is located below the virtual center line of the mounting portion in the vertical direction.

[0287] Supplementary Explanation (3-3):

[0288] According to the supplementary explanation (3-2), the flush toilet has the following features:

[0289] The curved section communicates with the basin to drain waste from the basin.

[0290] A drain pipe seat connects the bent section to a drain pipe disposed on the wall surface; and

[0291] A drain flange is located around the drain pipe seat.

[0292] The drainage flange is located below the virtual center line.

[0293] Supplementary explanations (3-4):

[0294] According to any one of the supplementary instructions (3-1) to supplementary instructions (3-3) for flush toilets, wherein,

[0295] The mounting unit includes:

[0296] The first wall thickness region has the wall thickness around the mounting hole on the upper side; and

[0297] The second wall thickness region has the wall thickness around the mounting hole on the lower side.

[0298] When the mounting portion is viewed from the basin side, the second wall thickness region is larger than the first wall thickness region.

[0299] Supplementary notes (3-5):

[0300] According to the supplementary explanation (3-3), the flush toilet has the following features:

[0301] The curtain panel connects the bent section and the mounting section.

[0302] The bent section includes:

[0303] A riser pipe extends obliquely upward from the lower end of the basin toward the wall side; and

[0304] A downcomer pipe, connecting the riser pipe and the drain pipe seat, extends obliquely downward from the upper end of the riser pipe toward the drain pipe seat.

[0305] The curtain panel is connected to the mounting part located below the downcomer.

[0306] Those skilled in the art can readily derive further effects and variations. Therefore, the broader scope of the invention is not limited to the specific details and representative embodiments shown and described above. Thus, various modifications can be made without departing from the spirit or scope of the general concept of the invention as defined by the appended claims and their equivalents.

Claims

1. A flushing toilet, characterized in that, have: The basin serves to collect waste; A bend, extending from the basin, is used to drain waste collected by the basin; A main water channel supplies cleaning water toward the basin. An inner edge connecting hole allows cleaning water to flow in from the main water passage; An inner edge water guide channel for the flow of cleaning water entering from the inner edge connecting hole; and The inner edge water outlet supplies the cleaning water flowing through the inner edge water guide channel to the basin. The inner edge water outlet has: A low-flow-rate outlet is defined as an inner-edge outlet when the flow of cleaning water in the inner-edge guide channel is low; and A high-flow-rate outlet is defined as an inner-edge outlet when the cleaning water flowing through the inner-edge water guide is at a high flow rate. It has a first inclined wall, the first inclined wall having a bottom surface that slopes downwards and downstream toward the inner edge of the outlet, which includes the downstream region of the low-flow outlet. The first inclined wall is provided throughout the entire range from the low-flow outlet to the high-flow outlet.

2. The flushing toilet according to claim 1, characterized in that, It has a second inclined wall, the second inclined wall having a bottom surface that slopes downwards and upwards up to the inner edge of the outlet, which includes the downstream region of the low flow outlet.

3. The flushing toilet according to claim 2, characterized in that, The low-flow discharge port is located below the central axis of the inner edge discharge port.

4. The flushing toilet according to claim 1, wherein, The low-flow-rate outlet and the high-flow-rate outlet are formed in the same flow path. The flow path cross-sectional area of ​​the low-flow-rate discharge port is smaller than that of the high-flow-rate discharge port.

5. The flushing toilet according to claim 4, wherein, The low-flow-rate outlet is positioned upstream of the high-flow-rate outlet.

6. The flushing toilet according to claim 5, wherein, In the interval between the low-flow-rate outlet and the high-flow-rate outlet, including at least the nearest downstream region of the low-flow-rate outlet, the cross-sectional area of ​​the inner edge guide channel continuously and gradually increases as it moves from the low-flow-rate outlet side towards the high-flow-rate outlet side.

7. The flushing toilet according to claim 4, wherein, The inner edge water guide has a stirring chamber with a flow path cross-sectional area larger than that of the low flow outlet on the upstream side.

8. The flushing toilet according to claim 4, further comprising: A jet water guide channel is provided for the flow of cleaning water from the main water channel; The spray nozzle directs the cleaning water flowing through the spray guide path from the front of the bend towards the bend; and The pressure control unit connects the main water passage and the inner edge water passage on the upstream side of the jet guide water passage.

9. The flushing toilet according to claim 8, wherein, The inner edge water guide channel has a stirring chamber on the upstream side compared to the low flow rate outlet. The cross-sectional area of ​​the flow path of the low-flow outlet is larger than that of the flow path of the pressure speed control unit. The cross-sectional area of ​​the flow path of the high-flow-rate outlet and the mixing chamber is larger than that of the low-flow-rate outlet.

10. The flushing toilet according to claim 8, wherein, The central axis of the pressure speed control unit in the direction of the flow of the cleaning water is located above the central axis of the flow of the cleaning water in the direction of the low flow outlet.

11. The flushing toilet according to claim 10, wherein, The inner edge water guide channel has a stirring chamber with a larger cross-sectional area than the low-flow outlet on the upstream side. The mixing chamber has a wall on the upstream side of the low-flow discharge port.

12. The flushing toilet according to claim 8, wherein, The jet nozzle is formed at the front end of the jet guide path. Furthermore, the jet water guide channel has a constricted section whose cross-sectional area decreases as it approaches the jet outlet. Among the cross-sectional areas of the jet water guide channels, the cross-sectional area of ​​the jet outlet is the smallest. The rate of reduction of the width of the top surface of the constriction section in the flow direction of the cleaning water in the jet water guide path is smaller than the rate of reduction of the width of the bottom surface of the constriction section in the flow direction. At least one side of the jet water guide path has an acute angle with the top surface of the jet water guide path.

13. The flushing toilet according to claim 12, wherein, The jet water guide has a curved section, which is connected to the contraction section, and changes the flow direction of the cleaning water from rear to front to front to rear.

14. The flushing toilet according to claim 12, wherein, At least one of the sides of the contraction section forms an acute angle with the top surface of the contraction section.

15. The flushing toilet according to any one of claims 12 to 14, wherein, The distance between the top surface and the bottom surface of the contraction section gradually decreases as it approaches the spray nozzle.

16. The flushing toilet according to any one of claims 12 to 14, wherein, The distance between the sides of the contraction section gradually decreases as it approaches the spray nozzle.

17. The flushing toilet according to claim 8, further comprising: The mounting section is located between the basin and the wall surface, and the flushing toilet is installed on the wall surface via mounting components. The mounting part has at least two mounting holes. The wall thickness around the mounting hole on the lower side is thinner than the wall thickness around the mounting hole on the upper side.

18. The flushing toilet according to claim 17, wherein, The mounting part has at least four mounting holes. At least one mounting hole is located below the virtual center line of the mounting portion in the vertical direction.

19. The flushing toilet according to claim 18, further comprising: A drain pipe seat connects the bent section to a drain pipe disposed on the wall surface; and A drain flange is located around the drain pipe seat. The drainage flange is located below the virtual center line.

20. The flushing toilet according to any one of claims 17 to 19, wherein, The mounting unit includes: The first wall thickness region has the wall thickness around the mounting hole on the upper side; and The second wall thickness region has the wall thickness around the mounting hole on the lower side. When the mounting portion is viewed from the basin side, the second wall thickness region is larger than the first wall thickness region.

21. The flushing toilet according to claim 19, comprising: The curtain panel connects the bent section and the mounting section. The bent section includes: A riser pipe extends obliquely upward from the lower end of the basin toward the wall side; and A downcomer pipe, connecting the riser pipe and the drain pipe seat, extends obliquely downward from the upper end of the riser pipe toward the drain pipe seat. The curtain panel is connected to the mounting part located below the downcomer.

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