Water-washable toilet

Abstract

To prevent a float from getting stuck while preventing an abnormal noise from being made.SOLUTION: A flush toilet bowl according to an embodiment includes a toilet bowl body, a tank, a pump, a float switch, and a control device. The tank stores water that cleans the toilet bowl body. The pump supplies the water in the tank to the toilet bowl body. The float switch includes a float that moves up and down in conjunction with a water level in the tank and a movement shaft of the float and detects that the water level in the tank has lowered from a predetermined water level. The tank includes a branch part that branches the water supplied into the tank to a vicinity of the float and a vicinity of an inner wall part of the tank. The control device detects a signal emitted by the float switch and performs control to halt the pump.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION The disclosed embodiments relate to a flush toilet. [Background technology]

[0002] Conventionally, in flush toilets, there are known technologies for supplying (discharging) water near the float and for guiding water near the float to prevent the float switch from malfunctioning due to the float sticking to the moving shaft when water is supplied to the tank that stores flush water (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-55323 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-891 Summary of the Invention [Problem to be solved by the invention]

[0004] However, while the above-mentioned conventional technology can prevent the float from sticking, if the amount of water supplied to the tank increases, the sound of the water hitting the water surface in the tank can become abnormal, which may cause discomfort to the user.

[0005] An object of one aspect of the embodiment is to provide a flush toilet that can suppress the generation of abnormal noise while also suppressing the sticking of the float. [Means for solving the problem]

[0006] A flush toilet according to one aspect of the embodiment comprises a toilet body, a tank for storing water for flushing the toilet body, a pump for supplying the water in the tank to the toilet body, a float switch having a float that rises and falls in conjunction with the water level in the tank and an axis of movement for the float and that detects when the water level in the tank drops below a preset water level, and a control device that detects a signal emitted by the float switch and controls the pump to stop, and is characterized in that the tank has a branching section that branches the water supplied to the tank near the float and near the inner wall of the tank.

[0007] With this configuration, the water supplied to the tank is branched off into the vicinity of the float and the vicinity of the tank's inner wall, thereby suppressing abnormal noise by supplying water near the tank's inner wall, causing the water to collide with the tank's inner wall, and supplying water near the float can prevent the float from sticking. In other words, with this configuration, it is possible to suppress the generation of abnormal noise while also preventing the float from sticking.

[0008] Furthermore, in the flush toilet, the branching section is characterized by having a first flow path that supplies water toward the vicinity of the inner wall of the tank, and a second flow path that supplies water toward the vicinity of the float.

[0009] With this configuration, the water can be split into two flows regardless of the amount of water supplied to the tank (water supply amount), which makes it possible to stably prevent the float from sticking, which requires water to be supplied to the vicinity of the float.

[0010] Furthermore, the flush toilet is characterized in that the water branched into the first flow path and the second flow path is preferentially branched into the first flow path.

[0011] With this configuration, water is preferentially branched to the first flow path, i.e., a large amount of water is supplied near the inner wall of the tank, so even if the total amount of water supplied to the tank increases, the generation of abnormal noise can be suppressed.

[0012] Furthermore, in the flush toilet, the first flow path is arranged to face the second flow path.

[0013] With this configuration, the first flow path and the second flow path are arranged to face each other, i.e., the first flow path and the second flow path extend away from each other in opposite directions, so that water supplied from above can be distributed to each flow path without stagnating.

[0014] Furthermore, in the flush toilet, the first flow path and the second flow path are arranged in parallel.

[0015] With this configuration, the first flow path and the second flow path are arranged in parallel, so that a large amount of water is distributed to the first flow path while the amount of water distributed to the second flow path is not reduced to zero. This makes it possible to stably prevent the float from sticking, which requires water to be supplied to the vicinity of the float.

[0016] Furthermore, in the flush toilet, the water supply position to the branch section is set on the side of the first flow path.

[0017] According to this configuration, a large amount of water is distributed to the first flow path, while the amount of water distributed to the second flow path is not reduced to zero.

[0018] The flush toilet is also characterized in that the cross-sectional area of ​​the inlet of the first flow path is larger than the cross-sectional area of ​​the inlet of the second flow path.

[0019] With this configuration, the cross-sectional area of ​​the inlet of the first flow path is larger, so the amount of water supplied to the first flow path is greater, i.e., the amount of water supplied near the inner wall of the tank is greater.Therefore, even if the total amount of water supplied to the tank increases, the generation of abnormal noise can be suppressed.

[0020] Furthermore, in the flush toilet, the first flow path is formed with a downward slope toward the downstream side.

[0021] With this configuration, the flow of water in the first flow path becomes faster, so that the amount of water supplied to the vicinity of the inner wall of the tank increases, thereby suppressing the generation of abnormal noise even if the total amount of water supplied to the tank increases. [Effects of the Invention]

[0022] According to one aspect of the embodiment, it is possible to suppress the occurrence of abnormal noise and the sticking of the float. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a diagram showing the overall configuration of a flush toilet according to the first embodiment. [Figure 2] Figure 2 is a perspective view (part 1) of the tank. [Figure 3] Figure 3 is a perspective view (part 2) of the tank. [Figure 4] FIG. 4 is an explanatory diagram of the flow path of water supplied to the tank. [Figure 5] FIG. 5 is a perspective view of the branching portion. [Figure 6] FIG. 6 is a plan view of the branching portion. [Figure 7] FIG. 7 is a perspective view of a branch portion of a flush toilet according to the second embodiment. [Figure 8] FIG. 8 is a plan view of a branch section in a flush toilet according to the second embodiment. [Figure 9] FIG. 9 is an explanatory diagram of the flow of water supplied to the tank in a flush toilet according to the second embodiment. [Figure 10] FIG. 10 is a perspective view of a branch section in a flush toilet according to the third embodiment. [Figure 11] FIG. 11 is a plan view of a branch section in a flush toilet pertaining to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0024] Embodiments of the flush toilet disclosed in this application will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below.

[0025] First Embodiment <Overall configuration of a flush toilet> First, the overall structure of a flush toilet 1 according to an embodiment will be explained with reference to Figure 1. Figure 1 is a diagram showing the overall structure of a flush toilet 1 according to a first embodiment.

[0026] As shown in Figure 1, a flush toilet 1 comprises, for example, a toilet body 200 that is placed on the floor of a toilet room, and a flush water supply device 100 that is positioned behind the toilet body 200 and supplies water (hereinafter referred to as flush water) to the toilet body 200.

[0027] The toilet body 200 comprises a bowl portion 210 that receives waste, and a drain trap pipe 220 that extends rearward from the bottom of the bowl portion 210. The bowl portion 210 is formed with a rim spout 211 that spouts water from the rim and a jet spout 212 that spouts water in a jet. The rim spout 211 is formed at the rear of the top of the bowl portion 210, and spouts flush water along the upper edge of the bowl portion 210.

[0028] Jet water outlet 212 is formed at the bottom of bowl portion 210 and discharges flush water toward drain trap pipe 220. Discharge of flush water from jet water outlet 212 rapidly fills drain trap pipe 220 with flush water, allowing siphon action to occur early. Drain trap pipe 220 forms a water seal and is connected to sewer piping (not shown).

[0029] The cleaning water supply device 100 comprises a valve unit 400 controlled by a control device 700, a tank 500 located downstream of the valve unit 400 for storing cleaning water, and a pump 600 located downstream within the tank 500 for pressurizing the cleaning water.

[0030] A water supply passage 310 that supplies flush water from a water supply source (not shown) is connected to the upstream side of the valve unit 400. Also, a rim-side water supply passage 320 for supplying flush water to the rim spout 211 and a tank-side water supply passage 330 for supplying flush water to the tank 500 are connected to the downstream side of the valve unit 400.

[0031] The valve unit 400 includes a constant flow valve 410, a diaphragm-type water supply valve 420 provided downstream of the constant flow valve 410, a switching valve 430 provided downstream of the water supply valve 420, and a vacuum breaker 440 provided downstream of the switching valve 430.

[0032] Constant flow valve 410 keeps constant the flow rate of flush water that flows into constant flow valve 410 from water supply passage 310 and heads downstream. Water supply valve 420 is configured to include, for example, a diaphragm, and opens and closes the supply of flush water.

[0033] The switching valve 430 switches the supply destination of flush water from the water supply source, for example, between the rim spout 211 of the toilet body 200 and the tank 500. In other words, the switching valve 430 supplies flush water to either the rim-side water supply passage 320 or the tank-side water supply passage 330.

[0034] Vacuum breaker 440 prevents backflow of flush water. Vacuum breaker 440 may cause flush water to overflow into water receiving section 442 due to malfunction of valve body 441, but the flush water that overflows into water receiving section 442 is collected by water receiving section 442 and then discharged into tank 500 at section A via a drain outlet (not shown) of drain section 443. In other words, tank 500 also functions as a drain tank that stores flush water discharged from the drain outlet.

[0035] The tank 500 stores flush water to be supplied to the jet water spout 212 of the toilet body 200. A pump-side water supply passage 340 is connected to the bottom of the tank 500, and a pump 600 is connected to the downstream end of the pump-side water supply passage 340. The configuration of the tank 500 will be described later with reference to Figures 2 to 4.

[0036] Additionally, an overflow flow path 341 is connected to the top of the tank 500. The overflow flow path 341 causes flush water to flow out into the toilet body 200 when, for example, flush water above a specified water level is supplied inside the tank 500. In detail, the overflow flow path 341 causes flush water that has reached a specified water level or above to flow out into the jet spout 212 of the toilet body 200 via the jet-side water supply path 350, without passing through the pump 600.

[0037] The pump 600 is connected to the jet water outlet 212 via the jet side water supply passage 350, and pressurizes the cleaning water stored in the tank 500, supplying the cleaning water stored in the tank 500 to the jet water outlet 212 via the jet side water supply passage 350.

[0038] The control device 700 controls each part of the flush toilet 1. The control device 700 is realized, for example, by a CPU (Central Processing Unit) or MPU (Micro Processing Unit) executing a program stored in a memory unit (not shown), using RAM (Random Access Memory) as a work area. The memory unit is realized, for example, by a semiconductor memory element such as RAM or flash memory.

[0039] <Tank configuration> Next, the configuration of the tank 500 will be described with reference to Figures 2 to 4. Figures 2 and 3 are perspective views of the tank 500. Note that Figure 3 shows a state in which the lid 520 in Figure 2 is omitted. Figure 4 is an explanatory diagram of the flow path of water (cleaning water) W supplied to the tank 500. Note that Figure 4 shows a schematic side cross section of the upper part of the tank 500.

[0040] 2 and 3, the tank 500 includes a tank portion 510, a lid portion 520, and a branch portion 530. The tank portion 510 includes a large tank portion 511 and a small tank portion 512. The large tank portion 511 has a larger volume than the small tank portion 512. Thus, the tank portion 510 has an asymmetrical shape.

[0041] The lid 520 is attached to the tank 510 from above so as to cover the upper opening (see FIG. 3) of the tank 510. A float switch 540, which will be described later, is attached to the lid 520.

[0042] Branching section 530 is attached to the rear surface of lid section 520, and receives flushing water W supplied from a water supply device (not shown) at a predetermined flow rate per unit time, and supplies the received flushing water W into tank section 510. At this time, flushing water W is branched by branching section 530 into a first flow (flushing water W1) and a second flow (flushing water W2).

[0043] 4, branching portion 530 forms a flow path for flushing water W to be supplied into tank portion 510 between it and the rear surface of lid portion 520. The flushing water W supplied from the water supply device flows through a predetermined water supply position P W As described above, the cleaning water W is separated by the branching section 530 into cleaning water W1 and cleaning water W2 (see FIG. 3), which flow over the branching section 530 and are supplied into the tank section 510.

[0044] Float switch 540 is disposed in tank section 510. Float switch 540 includes float 541 (see FIG. 9) and moving shaft 542 (see FIG. 9). Float 541 is configured to be movable (movable up and down) along moving shaft 542 extending in the vertical direction. Float switch 540 detects the water level in tank section 510 as float 541 moves (moves up and down) in conjunction with the water level in tank section 510.

[0045] Float switch 540 detects that the water level in tank unit 510 has dropped below a preset water level. For example, when float switch 540 detects that the water level in tank unit 510 has dropped below a preset water level, it issues a signal to control device 700 (see FIG. 1).

[0046] When the control device 700 detects the signal emitted by the float switch 540, it stops the pump 600. In this way, the control device 700 controls the water supply to the tank 500 based on the water level detected by the float switch 540.

[0047] Here, there is a risk that float switch 540 may malfunction, for example, when float 541 pulsates as it moves up and down, causing float 541 to stick to moving shaft 542 and become inoperable. For this reason, it is preferable to supply cleaning water W (cleaning water W2) toward the vicinity of float 541 in order to prevent malfunction of float switch 540, i.e., to prevent float 541 from sticking.

[0048] On the other hand, for example, if the amount of water supplied to tank section 510 increases, the sound of the water hitting the water surface in tank section 510 may become an abnormal noise that is unpleasant to the user, or the wash water may splash due to rippling. For this reason, it is preferable to supply wash water W (wash water W1) so that it hits the inner wall section of tank section 510 (inner wall section 512a of small tank section 512 shown in Figure 3) so that the wash water W does not hit the water surface of tank section 510 directly.

[0049] In this embodiment, by branching the cleaning water W supplied into the tank section 510 at the branching section 530 to the vicinity of the float 541 and the vicinity of the inner wall section 512a of the tank section 510, it is possible to suppress the generation of abnormal noise while also suppressing the sticking of the float 541.

[0050] <Branch configuration> Next, the configuration of branching section 530 will be described with reference to Figures 5 and 6. Figure 5 is a perspective view of branching section 530. Figure 6 is a plan view of branching section 530. As described above, branching section 530 forms a flow path between its upper surface (the upper surface of plate section 531, which will be described later) and the rear surface of lid section 520 (see Figure 2), through which cleaning water W supplied toward tank section 510 (see Figures 2 and 3) is supplied into tank section 510.

[0051] 5 and 6, branch portion 530 includes plate portion 531, peripheral wall portion 532, and standing wall portion 533. Plate portion 531 is formed in a plate shape and includes first flow path 531a and second flow path 531b. Note that first flow path 531a and second flow path 531b are formed by partitioning the upper surface of plate portion 531 by peripheral wall portion 532 and standing wall portion 533, which will be described later.

[0052] The first flow path 531a is connected to the water supply position P W The first flow path 531a is formed in a straight line and supplies cleaning water W1 toward the vicinity of inner wall 512a of tank 510. Cleaning water W1 is supplied from tip 531aa, which serves as a water supply portion from first flow path 531a, toward the vicinity of inner wall 512a of tank 510.

[0053] The second flow path 531b is connected to the water supply position P W First flow path 531a is formed to detour in the opposite direction from first flow path 531a and supplies flush water W2 toward the vicinity of float 541 (see FIG. 9). From hole 531ba, which serves as a water supply portion from second flow path 531b, flush water W2 is supplied toward the vicinity of float 541. Hole 531ba also functions as a drain outlet from vacuum breaker 440 (see FIG. 1).

[0054] In this way, the first flow path 531a and the second flow path 531b are connected to the water supply position P W That is, the first flow path 531a and the second flow path 531b are provided so as to face each other at the water supply position P W extend away from each other in opposite directions.

[0055] Branching section 530 branches flush water W supplied into tank section 510 (see FIGS. 2 and 3) to the vicinity of float 541 (see FIG. 9) and the vicinity of inner wall section 512a of tank section 510.

[0056] The peripheral wall portion 532 is provided on a part of the outer periphery of the plate portion 531 in an upright manner.

[0057] The standing wall portion 533 is erected in the center of the plate portion 531. As described above, the standing wall portion 533 divides the plate portion 531 into the first flow path 531a and the second flow path 531b at the center of the plate portion 531. The center of the plate portion 531 is also divided by the standing wall portion 521, a part of which is provided on the back surface of the lid portion 520.

[0058] In addition, the water supply position P W Water supply position P including W A plurality of (three in the illustrated example) ribs 535 are provided around the periphery of the first flow path 531a. The longitudinal direction of the plurality of ribs 535 faces the first flow path 531a. That is, the orientation of the plurality of ribs 535 is aligned with the flow direction of the cleaning water W1 in the first flow path 531a.

[0059] Furthermore, at branching section 530, the cleaning water W branched into first flow path 531a and second flow path 531b is preferentially branched into first flow path 531a. The above-mentioned multiple ribs 535 are oriented along the flow direction of cleaning water W1 in first flow path 531a, which is a structure for forming a flow toward first flow path 531a and preferentially branching into first flow path 531a.

[0060] In addition, at the branching portion 530, the water supply position P W is set closer to the first flow path 531a. W The reason why the flow path 531a is set closer to the first flow path 531a is to form a flow to the first flow path 531a and to branch preferentially to the first flow path 531a.

[0061] Furthermore, in the branching portion 530, the width B1 (see FIG. 6) of the inlet of the first flow path 531a is greater than the width B2 (see FIG. 6) of the inlet of the second flow path 531b. Therefore, the cross-sectional area of ​​the inlet of the first flow path 531a is greater than the cross-sectional area of ​​the inlet of the second flow path 531b. In this way, when the cross-sectional area of ​​the inlet of the first flow path 531a is greater than the cross-sectional area of ​​the inlet of the second flow path 531b, the amount of water supplied to the first flow path 531a increases, and therefore the water is preferentially branched to the first flow path 531a.

[0062] Furthermore, first flow path 531a is formed to slope downward toward the downstream side (i.e., toward tip 531aa) in branching section 530. When first flow path 531a slopes downward toward the downstream side in this manner, the flow of cleaning water W1 in first flow path 531a becomes faster, and therefore cleaning water W1 is preferentially branched into first flow path 531a.

[0063] With the flush toilet 1 pertaining to the first embodiment described above, the flush water W supplied into the tank 500 (tank portion 510) is branched near the float 541 and near the inner wall 512a of the tank portion 510 and supplied into the tank portion 510, and by supplying water near the inner wall 512a of the tank portion 510, flush water W1 is caused to collide with the inner wall 512a of the tank portion 510, suppressing abnormal noise, and supplying water near the float 541 prevents the float 541 from sticking. In other words, with the flush toilet 1 pertaining to the first embodiment, the generation of abnormal noise can be suppressed while also preventing the float 541 from sticking.

[0064] Furthermore, by having branching section 530 having first flow path 531a that supplies water toward the vicinity of inner wall section 512a of tank section 510 and second flow path 531b that supplies water toward the vicinity of float 541, it is possible to branch into two flows regardless of the amount of flush water W (amount of water supplied) supplied into tank section 510. This makes it possible to stably prevent float 541 from sticking, which requires water to be supplied to the vicinity of float 541.

[0065] Furthermore, since the cleaning water W is preferentially branched to the first flow path 531a, i.e., a large amount of water is supplied to the vicinity of the inner wall portion 512a of the tank portion 510, the occurrence of abnormal noise can be suppressed even if the total amount of cleaning water W supplied into the tank portion 510 increases.

[0066] In addition, the first flow path 531a and the second flow path 531b are arranged so as to face each other, that is, the first flow path 531a and the second flow path 531b are arranged so as to face each other at the water supply position P W Since the flow passages 531a and 531b extend away from each other in opposite directions, the cleaning water W supplied from above can be distributed to each of the flow passages 531a and 531b without accumulating.

[0067] In addition, at the branching portion 530, the water supply position P W is set closer to the first flow path 531a, so that a large amount of cleaning water W1 is distributed toward the first flow path 531a, while the amount of cleaning water W2 distributed to the second flow path 531b is not reduced to zero.

[0068] Furthermore, since the cross-sectional area of ​​the inlet of the first flow path 531a is larger than the cross-sectional area of ​​the inlet of the second flow path 531b, the amount of water supplied to the first flow path 531a is greater, i.e., the amount of water supplied to the vicinity of the inner wall portion 512a of the tank portion 510 is greater, so even if the total amount of cleaning water W supplied into the tank portion 510 increases, the generation of abnormal noise can be suppressed.

[0069] Furthermore, by forming first flow path 531a with a downward slope toward the downstream side, the flow of water in first flow path 531a becomes faster, which increases the amount of water supplied to the vicinity of inner wall 512a of tank 510, thereby making it possible to suppress the generation of abnormal noise even if the total amount of flush water W supplied into tank 510 increases.

[0070] Second Embodiment Next, a flush toilet pertaining to the second embodiment will be described with reference to Figures 7 to 9. Figure 7 is a perspective view of a branching section 830 in a flush toilet pertaining to the second embodiment. Figure 8 is a plan view of a branching section 830 in a flush toilet pertaining to the second embodiment. Figure 9 is an explanatory diagram of the flow of water (flushing water W) supplied to the tank 500 in a flush toilet pertaining to the second embodiment.

[0071] In the second embodiment, the branching portion 830 is different from the first embodiment, but the other configurations are the same or equivalent. Therefore, only the branching portion 830 will be described below.

[0072] <Branch configuration> 7 and 8, branch portion 830 includes a plate portion 831, a peripheral wall portion 832, and an upright wall portion 833. Plate portion 831 is formed in a plate shape and includes a first flow path 831a and a second flow path 831b. Note that first flow path 831a and second flow path 831b are formed by partitioning the upper surface of plate portion 831 by peripheral wall portion 832 and upright wall portion 833, which will be described later.

[0073] The first flow path 831a is connected to the water supply position P W This is a flow path that supplies cleaning water W1 from the first flow path 831a toward the vicinity of inner wall portion 512a (see FIG. 9) of tank portion 510. Cleaning water W1 is supplied from tip end 831aa, which serves as a water supply portion from first flow path 831a, toward the vicinity of inner wall portion 512a of tank portion 510.

[0074] The second flow path 831b is connected to the water supply position P W The second flow path 831b is formed so as to flow in a direction different from that of the first flow path 831a and parallel to that of the first flow path 831a, and supplies flush water W2 toward the vicinity of the float 541 (see FIG. 9). The flush water W2 is supplied toward the vicinity of the float 541 from a hole 831ba (see FIG. 8) which serves as a water supply portion from the second flow path 831b.

[0075] Also, as shown in FIG. 8, the width of the first flow path 831a increases from its inlet toward the downstream side (tip 831aa), whereas the width of the second flow path 831b decreases toward the downstream side at the hole 831ba.

[0076] In this way, the first flow path 831a and the second flow path 831b are connected to the water supply position P W are arranged parallel to each other.

[0077] Branching section 830 branches the cleaning water W supplied into tank section 510 to the vicinity of float 541 (see FIG. 9) and the vicinity of inner wall section 512a of tank section 510.

[0078] 9, flush water W1 supplied from first flow path 831a (see FIGS. 7 and 8) is supplied toward the vicinity of inner wall portion 512a of tank portion 510. Furthermore, flush water W2 supplied from second flow path 831b (see FIGS. 7 and 8) is supplied toward the vicinity of float 541 from a position different from the water supply portion of first flow path 831a.

[0079] As shown in FIGS. 7 and 8, the peripheral wall portion 832 is provided in an upright position on a part of the outer periphery of the plate portion 831.

[0080] The standing wall portion 833 is erected in the center of the plate portion 831. As described above, the standing wall portion 833 divides the plate portion 831 at the center thereof into a water supply side to the tank portion 510 and a water discharge side to the vacuum breaker 440 (see FIG. 1). The center of the plate portion 831 is also divided by the standing wall portion 521, a part of which is provided on the back surface of the lid portion 520.

[0081] In addition, the water supply position P W Water supply position P including WA plurality of (four in the illustrated example) ribs 835 are provided around the first flow path 831a. The longitudinal directions of the plurality of ribs 835 are provided toward the first flow path 831a and the second flow path 831b, respectively. That is, the orientation of the plurality of ribs 835 is aligned with the flow direction of cleaning water W1 in the first flow path 831a and aligned with the flow direction of cleaning water W2 in the second flow path 831b.

[0082] Furthermore, at the branching portion 830, the cleaning water W branched into the first flow path 831a and the second flow path 831b is preferentially branched into the first flow path 831a.

[0083] In addition, at the branching portion 830, the water supply position P W is set closer to the first flow path 831a. W The reason why the flow path 831b is set closer to the first flow path 831a is to form a flow toward the first flow path 831a and to branch preferentially to the first flow path 831a.

[0084] Furthermore, the cross-sectional area of ​​the inlet of first flow path 831a is larger than the cross-sectional area of ​​the inlet of second flow path 831b at branching portion 830. When the cross-sectional area of ​​the inlet of first flow path 831a is larger than the cross-sectional area of ​​the inlet of second flow path 831b in this way, the amount of water supplied to first flow path 831a increases, and therefore water is preferentially branched to first flow path 831a.

[0085] Furthermore, first flow path 831a is formed to slope downward toward the downstream side (i.e., toward tip 831aa) at branching portion 830. When first flow path 831a slopes downward toward the downstream side in this manner, the flow of cleaning water W1 in first flow path 831a becomes faster, and therefore cleaning water W1 is preferentially branched into first flow path 831a.

[0086] According to the flush toilet pertaining to the second embodiment described above, flush water W supplied into tank 500 (tank portion 510) is branched near float 541 and near inner wall 512a of tank portion 510 and supplied into tank portion 510, so that supplying water near inner wall 512a of tank portion 510 causes flush water W1 to collide with inner wall 512a of tank portion 510, suppressing abnormal noise, and supplying water near float 541 prevents float 541 from sticking. In other words, according to the flush toilet pertaining to the second embodiment, it is possible to suppress the generation of abnormal noise while also suppressing the sticking of float 541.

[0087] Furthermore, by having branching section 830 having first flow path 831a that supplies water toward the vicinity of inner wall section 512a of tank section 510 and second flow path 831b that supplies water toward the vicinity of float 541, it is possible to branch into two flows regardless of the amount of flush water W (amount of water supplied) supplied into tank section 510. This makes it possible to stably prevent float 541 from sticking, which requires water to be supplied to the vicinity of float 541.

[0088] Furthermore, since the cleaning water W is preferentially branched to the first flow path 831a, i.e., a large amount of water is supplied to the vicinity of the inner wall portion 512a of the tank portion 510, the occurrence of abnormal noise can be suppressed even if the total amount of cleaning water W supplied into the tank portion 510 increases.

[0089] Furthermore, by arranging the first flow path 831a and the second flow path 831b in parallel, a large amount of flush water W is distributed toward the first flow path 831a, while the amount of flush water W distributed to the second flow path 831b is not reduced to zero. This makes it possible to stably prevent the float 541 from sticking, which requires water to be supplied to the vicinity of the float 541.

[0090] In addition, at the branching portion 830, the water supply position P W is set closer to the first flow path 831a, so that a large amount of cleaning water W1 is distributed toward the first flow path 831a, while the amount of cleaning water W2 distributed to the second flow path 831b is not reduced to zero.

[0091] Furthermore, since the cross-sectional area of ​​the inlet of the first flow path 831a is larger than the cross-sectional area of ​​the inlet of the second flow path 831b, the amount of water supplied to the first flow path 831a is greater, i.e., the amount of water supplied to the vicinity of the inner wall portion 512a of the tank portion 510 is greater, so even if the total amount of cleaning water W supplied into the tank portion 510 increases, the generation of abnormal noise can be suppressed.

[0092] Furthermore, by forming first flow path 831a with a downward slope toward the downstream side, the flow of water in first flow path 831a becomes faster, which increases the amount of water supplied to the vicinity of inner wall 512a of tank 510, thereby making it possible to suppress the generation of abnormal noise even if the total amount of flush water W supplied into tank 510 increases.

[0093] Third Embodiment Next, a flush toilet pertaining to the third embodiment will be described with reference to Figures 10 and 11. Figure 10 is a perspective view of a branching section 930 in a flush toilet pertaining to the third embodiment. Figure 11 is a plan view of the branching section 930 in a flush toilet pertaining to the third embodiment.

[0094] In the third embodiment, the configuration is different from that of the first and second embodiments described above in the branching portion 930, but other configurations are the same or equivalent. Therefore, only the branching portion 930 will be described below.

[0095] <Branch configuration> 10 and 11, the branch portion 930 includes a plate portion 931, a peripheral wall portion 932, and an upright wall portion 933. The plate portion 931 is formed in a plate shape and includes a first flow path 931a and a second flow path 931b. The first flow path 931a and the second flow path 931b are formed by partitioning the upper surface of the plate portion 931 by the peripheral wall portion 932 and the upright wall portion 933, which will be described later.

[0096] The first flow path 931a is connected to the water supply position P WThe first flow path 931a is formed in a straight line and supplies cleaning water W1 toward the vicinity of inner wall 512a (see FIG. 9) of tank part 510. Cleaning water W1 is supplied from tip 931aa, which serves as a water supply portion from first flow path 931a, toward the vicinity of inner wall 512a of tank part 510.

[0097] The second flow path 931b is connected to the water supply position P W The second flow path 931b is formed so as to flow in a direction different from that of the first flow path 931a and parallel to that of the first flow path 931a, and supplies flush water W2 toward the vicinity of the float 541 (see FIG. 9). The flush water W2 is supplied toward the vicinity of the float 541 from a hole 931ba (see FIG. 11) which serves as a water supply portion from the second flow path 931b.

[0098] In this way, the first flow path 931a and the second flow path 931b are connected to the water supply position P W are arranged parallel to each other.

[0099] Branching section 930 branches the flush water W supplied into tank section 510 to the vicinity of float 541 (see FIG. 9) and the vicinity of inner wall section 512a of tank section 510.

[0100] 9, in this embodiment, flush water W1 supplied from first flow path 931a is supplied toward the vicinity of inner wall portion 512a of tank portion 510. Furthermore, flush water W2 supplied from second flow path 931b is supplied toward the vicinity of float 541 from a position different from the water supply portion of first flow path 931a.

[0101] The peripheral wall portion 932 is provided on a part of the outer periphery of the plate portion 931 in an upright manner.

[0102] The standing wall portion 933 is erected in the center of the plate portion 931. As described above, the standing wall portion 933 divides the plate portion 931 at the center of the plate portion 931 into a water supply side to the tank portion 510 and a water discharge side to the vacuum breaker 440 (see FIG. 1). The center of the plate portion 931 is also divided by the standing wall portion 521, a part of which is provided on the back surface of the lid portion 520.

[0103] In addition, the water supply position P W Water supply position P including W A plurality of (three in the illustrated example) ribs 935 are provided around the periphery of the first flow path 931a. The longitudinal direction of the plurality of ribs 935 faces the first flow path 931a. In other words, the orientation of the plurality of ribs 935 is aligned with the flow direction of the cleaning water W1 in the first flow path 931a.

[0104] Furthermore, in the branching portion 930, the cleaning water W branched into the first flow path 931a and the second flow path 931b is preferentially branched into the first flow path 931a.

[0105] In addition, at the branching portion 930, the water supply position P W is set closer to the first flow path 931a. W The reason why the flow path 931b is set closer to the first flow path 931a is to form a flow toward the first flow path 931a and to branch preferentially to the first flow path 931a.

[0106] Furthermore, in the branching portion 930, the cross-sectional area of ​​the inlet of the first flow path 931a is larger than the cross-sectional area of ​​the inlet of the second flow path 931b. In this way, when the cross-sectional area of ​​the inlet of the first flow path 931a is larger than the cross-sectional area of ​​the inlet of the second flow path 931b, the amount of water supplied to the first flow path 931a increases, and therefore, water is preferentially branched to the first flow path 931a.

[0107] Furthermore, the first flow path 931a is formed to slope downward toward the downstream side (i.e., toward the tip end 931aa) in the branching portion 930. When the first flow path 931a slopes downward toward the downstream side in this manner, the flow of the cleaning water W1 in the first flow path 931a becomes faster, and therefore the cleaning water W1 is preferentially branched into the first flow path 931a.

[0108] According to the flush toilet pertaining to the third embodiment described above, flush water W supplied into tank 500 (tank portion 510) is branched near float 541 and near inner wall 512a of tank portion 510 and supplied into tank portion 510, so that supplying water near inner wall 512a of tank portion 510 causes flush water W1 to collide with inner wall 512a of tank portion 510, suppressing abnormal noise, and supplying water near float 541 prevents float 541 from sticking. In other words, according to the flush toilet pertaining to the third embodiment, it is possible to suppress the generation of abnormal noise while also suppressing the sticking of float 541.

[0109] Furthermore, by having branching section 930 having first flow path 931a that supplies water toward the vicinity of inner wall section 512a of tank section 510 and second flow path 931b that supplies water toward the vicinity of float 541, it is possible to branch into two flows regardless of the amount of flush water W (amount of water supplied) supplied into tank section 510. This makes it possible to stably prevent float 541 from sticking, which requires water to be supplied to the vicinity of float 541.

[0110] Furthermore, since the cleaning water W is preferentially branched to the first flow path 931a, i.e., a large amount of water is supplied to the vicinity of the inner wall portion 512a of the tank portion 510, the occurrence of abnormal noise can be suppressed even if the total amount of cleaning water W supplied into the tank portion 510 increases.

[0111] In addition, at the branching portion 930, the water supply position P W is set closer to the first flow path 931a, so that a large amount of cleaning water W1 is distributed toward the first flow path 931a, while the amount of cleaning water W2 distributed to the second flow path 931b is not reduced to zero.

[0112] Furthermore, since the cross-sectional area of ​​the inlet of the first flow path 931a is larger than the cross-sectional area of ​​the inlet of the second flow path 931b, the amount of water supplied to the first flow path 931a is greater, i.e., the amount of water supplied to the vicinity of the inner wall portion 512a of the tank portion 510 is greater, so even if the total amount of cleaning water W supplied into the tank portion 510 increases, the generation of abnormal noise can be suppressed.

[0113] Furthermore, by forming first flow path 931a with a downward slope toward the downstream side, the flow of water in first flow path 931a becomes faster, which increases the amount of water supplied to the vicinity of inner wall 512a of tank 510, thereby making it possible to suppress the generation of abnormal noise even if the total amount of flush water W supplied into tank 510 increases.

[0114] Further advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. [Explanation of symbols]

[0115] 1 flush toilet 100 Cleaning water supply device 200 Toilet body 210 Bowl 211 Rim Spout 212 Jet Spout 220 Drain trap pipe 310 Water supply channel 320 Rim-side water supply channel 330 Tank side water supply channel 340 Pump side water supply line 341 Overflow Channel 350 Jet side water supply line 400 valve unit 410 Constant flow valve 420 Water supply valve 430 Switching valve 440 Vacuum Breaker 441 Valve body 443 Drainage section 500 Tank 510 Tank section 511 Large Tank Section 512 Small Tank Section 512a Inner wall 520 Lid 521 Vertical wall 530 Branch 531 Plate section 531a First Channel 531aa Tip 531b Second flow path 531ba hole 532 Peripheral wall section 533 Vertical wall 535 Ribs 540 Float Switch 541 Float 542 Moving axis 600 Pump 700 control device 830 Branch 831 Plate section 831a First Channel 831aa Tip 831b Second flow path 831ba hole 832 Peripheral wall section 833 Vertical wall 835 Ribs 930 Branch 931 Plate section 931a First Channel 931aa Tip 931b Second Channel 931ba hole 932 Peripheral wall section 933 Vertical wall 935 Rib P W Water supply position W Cleaning water W1 Cleaning water W2 cleaning water

Claims

1. The toilet bowl body, a tank for storing water for flushing the toilet body; a pump that supplies water in the tank to the toilet body; a float switch having a float that moves up and down in conjunction with the water level in the tank and a moving axis of the float, and detecting when the water level in the tank drops below a preset water level; a control device that detects a signal emitted by the float switch and controls to stop the pump; Equipped with The tank has a branching portion that branches the water supplied into the tank to the vicinity of the float and the vicinity of an inner wall portion of the tank. A flush toilet characterized by:

2. The branch portion has a first flow path that supplies water toward the vicinity of the inner wall portion of the tank and a second flow path that supplies water toward the vicinity of the float.

2. The flush toilet according to claim 1.

3. The water branched into the first flow path and the second flow path is preferentially branched into the first flow path.

3. The flush toilet according to claim 2.

4. The first flow path is provided to face the second flow path.

4. The flush toilet according to claim 2 or 3.

5. The first flow path and the second flow path are provided in parallel.

4. The flush toilet according to claim 2 or 3.

6. The cross-sectional area of ​​the inlet of the first flow path is larger than the cross-sectional area of ​​the inlet of the second flow path. A flush toilet according to any one of claims 2 to 5.

7. The first flow path is formed to have a downward slope toward the downstream side. A flush toilet according to any one of claims 2 to 6.

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