Flush toilet apparatus

Abstract

Provided is a flush toilet device capable of achieving a compact layout and improving the pressure loss efficiency of ejection water. The present invention is provided with: a flush toilet body having a drain bend line; an injection port that discharges washing water rearward into the inside of the drain bend line; a jet water guide path for guiding washing water to the jet orifice; a water tank for temporarily storing cleaning water; and a pump that sucks the washing water stored in the water tank by means of a suction unit of the water tank, the injection water guide path having: a downstream-side water guide path that reaches the injection port; and an upstream-side water-guiding channel connected to the downstream-side water-guiding channel, the downstream-side water-guiding channel being made of ceramic, and the suction unit and the pump being disposed on either the left or the right with respect to the drain bend line. A connection part between the upstream-side water-guiding path and the downstream-side water-guiding path is also disposed on either the same side as the suction part or the pump with respect to the drain bend line.

Description

Technical Field

[0001] This invention relates to a flushing toilet device, and more particularly to a flushing toilet device of the type that cleans by spraying water. Background Technology

[0002] Traditionally, flushing toilets have widely utilized a type of device that uses jets of water for cleaning. The jet of water (cleaning water) is ejected backward from the nozzle into the drain bend. The jet of water (cleaning water) is guided back to the nozzle via a jet guide path.

[0003] Regarding jet guideways, especially the downstream guideway of the jet guideway leading to the jet nozzle, a technique has been proposed to resinify it (make it into a resin material). If this downstream guideway is resinified (for example, through a resin hose), the advantage of increased freedom in the design of the jet guideway path is obtained.

[0004] Patent documents Patent Document 1: Japanese Patent Application Publication No. 2018-3250 Summary of the Invention

[0005] However, when the downstream side guide channel is resin-coated, the likelihood of dirt adhering to this part increases. From this point of view, it is preferable to make the downstream side guide channel ceramic.

[0006] The applicant of this invention disclosed the following structure in Patent Document 1: the downstream water guide is made of ceramic, while the upstream water guide connected to it is made of other components (e.g., resin components).

[0007] Here, taking advantage of the ability to configure the upstream guide channel in a relatively flexible layout, the pump located closer to the upstream side than the upstream guide channel and the connection between the downstream guide channel and the upstream guide channel are configured to be separated to the left and right relative to the drainage bend (when viewed from above, the upstream guide channel is configured as if it were to cut across the drainage bend).

[0008] The inventors of this invention have conducted in-depth research on the configuration of the upstream water guide, and as a result, they have discovered that by placing the pump, which is located closer to the upstream side than the upstream water guide, and the connection between the downstream water guide and the upstream water guide in either the left or right side relative to the drainage bend, a more compact layout can be achieved, and the pressure loss efficiency of the jet water discharge can also be improved.

[0009] This invention is based on such knowledge. The object of this invention is to provide a flushing toilet device of the type that cleans by spraying water, which can achieve a compact layout and improve the pressure loss efficiency of the sprayed water.

[0010] This invention relates to a flushing toilet device comprising: a flushing toilet body having a basin and a drain bend extending from the lower part of the basin; a jet nozzle that ejects flushing water rearward into the drain bend; a jet guide path that guides the flushing water to the jet nozzle; a water tank for temporarily storing the flushing water; and a pump that draws the flushing water stored in the water tank via a suction section of the water tank. The jet guide path is characterized by having: a downstream guide path leading to the jet nozzle; and an upstream guide path connected to the downstream guide path. The downstream guide path is made of ceramic. The suction section and the pump are disposed on either the left or right side relative to the drain bend, and the connection between the upstream and downstream guide paths is also disposed on either the left or right side relative to the drain bend, as is the suction section and the pump.

[0011] According to the present invention, since the connection between the upstream water guide and the downstream water guide is arranged on the same side as the suction section and the pump relative to the drainage bend pipe, a compact layout can be achieved, and the pressure loss efficiency of the jet water discharge can also be improved.

[0012] In this invention, it is preferable that the suction part has an opening in a direction aligned in the front-rear direction, and the connecting part between the upstream water guide and the downstream water guide also extends in the front-rear direction.

[0013] Based on this feature, a more compact layout can be achieved, and the pressure loss efficiency of the jet water discharge can be further improved.

[0014] Furthermore, in this invention, it is preferable that the suction section is formed by connecting the connecting surface of the water tank side pipe and the connecting surface of the pump side pipe, and the connection section between the upstream side water guide and the downstream side water guide is formed by connecting the connecting surface of the upstream side water guide and the connecting surface of the downstream side water guide. The connecting surfaces of the water tank side pipe, the pump side pipe, the upstream side water guide, and the downstream side water guide are aligned in a parallel manner.

[0015] These features enable a more compact layout and further improve the pressure loss efficiency of the jet water discharge.

[0016] Furthermore, in this invention, it is preferable that the direction of the cleaning water flowing through the suction section is the front-to-back direction, and the direction of the cleaning water flowing through the connection between the upstream water guide and the downstream water guide is also the front-to-back direction.

[0017] These features enable a more compact layout and further improve the pressure loss efficiency of the jet water discharge.

[0018] In addition, in this invention, it is preferred that the connection between the upstream water guide and the downstream water guide is located below the basin, and the suction part is also located below the basin.

[0019] This feature also enables a more compact layout.

[0020] Furthermore, in this invention, it is preferable that all water guides from the suction section to the connection between the upstream water guide and the downstream water guide are arranged on either the left or right side, the same as the suction section and the pump, relative to the drain bend.

[0021] These features enable a more compact layout and further improve the pressure loss efficiency of the jet water discharge.

[0022] Furthermore, in this invention, it is preferable that, when viewed from above, all water guides from the suction section to the connection between the upstream and downstream water guides are configured not to overlap with the drainage bend.

[0023] These features enable a more compact layout and further improve the pressure loss efficiency of the jet water discharge.

[0024] Furthermore, in this invention, it is preferable that all water guides from the suction section to the shown connection between the upstream water guide and the downstream water guide are located closer to the bottom than the inner edge.

[0025] These features enable a more compact layout and further improve the pressure loss efficiency of the jet water discharge.

[0026] Furthermore, the following related invention can also be extracted. That is, the present invention is a flushing toilet device comprising: a flushing toilet body having a basin and a drain bend extending from the lower part of the basin; a jet nozzle that ejects flushing water rearward into the drain bend; a jet guide path that guides the flushing water to the jet nozzle; a water tank for temporarily storing the flushing water; and a pump that draws the flushing water stored in the water tank via a suction part of the water tank. The jet guide path is characterized by having: a downstream guide path leading to the jet nozzle; and an upstream guide path connected to the downstream guide path, the downstream guide path being made of ceramic; the suction part having an opening aligned in a front-rear direction; and the connection between the upstream and downstream guide paths also extending in a front-rear direction.

[0027] Furthermore, the following related invention can also be extracted. That is, the present invention is a flushing toilet device comprising: a flushing toilet body having a basin and a drain bend extending from the lower part of the basin; a jet nozzle that ejects flushing water rearward into the drain bend; a jet guide path that guides the flushing water to the jet nozzle; a water tank for temporarily storing the flushing water; and a pump that draws the flushing water stored in the water tank via a suction part of the water tank. The characteristic feature is that the jet guide path has: a downstream guide path leading to the jet nozzle; and an upstream guide path connected to the downstream... The downstream side guide water passage is made of ceramic and forms the suction section by connecting the connection surface of the water tank side pipe and the connection surface of the pump side pipe. The connection between the upstream side guide water passage and the downstream side guide water passage is formed by connecting the connection surface of the upstream side guide water passage and the connection surface of the downstream side guide water passage. The connection surfaces of the water tank side pipe, the pump side pipe, the upstream side guide water passage, and the downstream side guide water passage are aligned in a parallel manner.

[0028] According to the present invention, since the connection between the upstream water guide and the downstream water guide is arranged on the same side as the suction section and the pump relative to the drainage bend pipe, a compact layout can be achieved, and the pressure loss efficiency of the jet water discharge can also be improved. Attached Figure Description

[0029] Figure 1 This is a perspective view of a flush toilet according to one embodiment of the present invention. Figure 2 This is a top view of the flush toilet in this embodiment with the sanitary cleaning device removed. Figure 3 It is along Figure 2 A summary cross-sectional view observed along line III-III. Figure 4A This is a perspective view of the functional device of the flushing toilet in this embodiment, viewed from a slightly above left side. Figure 4B This is a perspective view of the functional device of the flushing toilet in this embodiment, viewed from a slightly above right side. Figure 5 This is a structural diagram showing the water supply path through which the flushing water of the toilet in this embodiment flows. Figure 6 This is a schematic cross-sectional view of the flushing toilet of this embodiment, which extends in the front-to-back direction along the vertical plane through the pump device. Figure 7 This is a schematic three-dimensional view of the upstream jet water guide pipe and the jet water guide path connecting pipe. Figure 8This is a summary front view of the upstream jet water guide pipe and the jet water guide connecting pipe. Figure 9 This is a schematic diagram showing the flow of cleaning water through the upstream jet guide pipe and the jet guide path connecting pipe, indicated by arrows. Figure 10 This is a schematic cross-sectional view of the vicinity of the jet water guide connection pipe. Symbol Explanation 1-Flush toilet (flushing toilet device); 2-Toilet body (flushing toilet body); 2a-Bottom opening; 4-Water tank device; 6-Sanitary washing device; 8-Water stop valve; 10-Water supply pipe; 12-Basin; 14-Drainage bend pipe; 14a-Inlet; 14b-Rising pipe; 14c-Top; 14d-Rear pipe; 16-Skirt; 18-Sewage receiving surface; 20-Inner edge; 22-Inner edge water outlet; 24-Inner edge water guide; 26-Jet nozzle; 28-Downstream side jet water guide; 30-Drain connector; 32-Water supply valve device; 34-Pump device; 34a-Suction port; 34p-Pump device water guide; 36-Switching valve device; 38-Control device; 40-Base plate; 42 - Water storage tank; 44- Water supply pipe for the tank; 46- Water supply unit for the tank; 48- Float switch; 50- Fixing component; 52- Water supply pipe for the sanitary cleaning device; 54- Upstream connecting pipe; 56- Downstream supply pipe; 58- Inner edge supply pipe; 60- Upstream jet guide pipe (upstream jet guide path); 62- Overflow unit; 72- Left side area; 72a- Top wall; 72b- Rear wall; 72c- Outflow pipe; 72d- Outlet; 72e- Suction port; 100- Jet guide path connecting pipe; 101- Mounting sleeve (outer side); 102- Mounting sleeve (inner side); 103- Annular sealing component; 104- Rear side end face; A- Area; S- Space; W- Wall surface; WS- Water accumulation surface. Detailed Implementation

[0030] In this instruction manual, when viewed from the front of the flushing toilet by a user standing facing it, the near side is referred to as "front", the far side as "back", the left side as "left", and the right side as "right" (if viewed from the seated user of the flushing toilet, the left and right sides are reversed).

[0031] (Overall structure) Figure 1 This is a perspective view showing a flushing toilet 1 (flushing toilet device) according to one embodiment of the present invention. Figure 2 This is a top view of the flush toilet 1 of this embodiment with the sanitary cleaning device removed. Figure 3 It is along Figure 2 A summary cross-sectional view observed along line III-III.

[0032] like Figure 1 As shown, the flush toilet 1 of this embodiment is a wall-mounted flush toilet that is fixed to the wall W at the rear. The flush toilet 1 includes: a ceramic toilet body 2 (flushing toilet body); a water tank device 4 for storing flushing water supplied to the toilet body 2; and a sanitary cleaning device 6 placed on top of the toilet body 2.

[0033] A water stop valve 8 is installed on the wall W to supply or stop the flushing water from a water source (not shown) such as tap water to the flush toilet 1. The water stop valve 8 is connected to the flush toilet 1 via a water supply pipe 10.

[0034] Figure 2 In the middle, the inner edge water outlet 22, the inner edge water guide 24, the upstream side jet water guide pipe 60 (upstream side jet water guide), the downstream side jet water guide 28, and the jet water guide connecting pipe 100 (connection part) are represented by dashed lines.

[0035] like Figure 2 and Figure 3 As shown, the toilet body 2 includes: a basin 12 for receiving waste; a drain bend pipe 14 connected below the basin 12 for discharging waste; and a skirt 16 that surrounds the basin 12 and the drain bend pipe 14 from the outside. A space S is formed between the basin 12, the drain bend pipe 14, and the skirt 16.

[0036] The basin 12 has: a basin-shaped waste receiving surface 18; and an inner edge 20 formed along the upper edge of the basin 12. Water will accumulate inside the basin 12 (forming a water accumulation surface WS).

[0037] The inner edge 20 includes an inner edge water outlet 22 for discharging cleaning water rearward, and an inner edge water guide 24 for guiding the cleaning water to the inner edge water outlet 22. The inner edge water outlet 22 is located near the center of the right side of the basin 12 in the front-rear direction. The cleaning water discharged from the inner edge water outlet 22 flows down along the inner circumferential surface of the inner edge 20 while swirling, to the dirt receiving surface 18, and cleans the basin 12.

[0038] Below the basin 12, a jet nozzle 26 is formed to discharge cleaning water into the inlet 14a of the drain bend pipe 14. The jet nozzle 26 is configured to face the inlet 14a of the drain bend pipe 14, and the cleaning water discharged from the jet nozzle 26 flows into the drain bend pipe 14, causing a siphon effect.

[0039] Cleaning water is supplied to the spray nozzle 26 through the upstream spray guide pipe 60, the spray guide path connecting pipe 100 and the downstream spray guide path 28.

[0040] The drain bend 14 has: an inlet 14a connected to the bottom of the basin 12; an ascending pipe 14b extending upward from the inlet 14a; a top 14c positioned at the highest point of the ascending pipe 14b and defining the water level WS; and a rear pipe 14d extending substantially horizontally rearward from the top 14c. The rear pipe 14d of the drain bend 14 is connected to a drain pipe (not shown) within the wall W via a drain connector 30.

[0041] The sanitary cleaning device 6 includes: a main body (not shown); a cleaning nozzle (not shown) configured to move in and out of the main body; a toilet seat (not shown) rotatably mounted on the main body; and a toilet lid rotatably mounted on the main body to cover the toilet seat. A water supply pipe 10 connected to a water stop valve 8 is connected to the main body of the sanitary cleaning device 6 to supply cleaning water sprayed from the cleaning nozzle.

[0042] Within space S, a water tank device 4 is housed in the portion below the basin 12, enclosed by the skirt 16. Within space S, in the portion behind the basin 12, a functional device for supplying flushing water stored in the water tank device 4 to the toilet body 2 is housed. This functional device may include, for example, a water supply valve device 32, a pump device 34, a switching valve device 36, and a control device 38. Furthermore, a base plate 40 is provided at the bottom opening 2a of the toilet body 2, enclosed by the skirt 16. This base plate 40 supports the aforementioned functional device.

[0043] Next, refer to Figure 4A and Figure 4B The water tank device 4, functional devices and base plate 40 housed in the gap S inside the toilet body 2 will be described.

[0044] Figure 4A This is a perspective view of the functional device of the flushing toilet 1 in this embodiment, viewed from the upper left. Figure 4B This is a perspective view of the functional device of the flush toilet 1 in this embodiment, viewed from the upper right. Figure 4A In the image, arrows indicate the direction of water flow for cleaning.

[0045] The water tank device 4 includes: a water storage tank 42 (water tank) for storing cleaning water supplied to the toilet body 2; a water tank supply unit 46 for allowing cleaning water from the water tank supply pipe 44 to flow into the water storage tank 42; a float switch 48 for detecting the water level of the cleaning water stored in the water storage tank 42; and a fixing member 50 for fixing the water tank device 4 to the bottom surface of the toilet body 2.

[0046] When viewed from above, the water storage tank 42 is formed in an L-shape, extending forward on the right side of the drain bend pipe 14, and then bending to the left. The water storage tank 42 is a resin tank that stores cleaning water for inner edge discharge and jet discharge, and can store a specified amount of cleaning water.

[0047] A water tank supply unit 46 is disposed on the upper part of a water storage tank 42. The upstream side of the water tank supply unit 46 is connected to a water tank supply pipe 44, and the downstream side of the water tank supply unit 46 is connected to the water storage tank 42. Inside the water tank supply unit 46, a flow path is formed for guiding cleaning water from the water tank supply pipe 44 to the water storage tank 42.

[0048] When the water level in the water storage tank 42 drops below the stop water level (full water level), the float switch 48 is in the open state. Conversely, when the water level in the water storage tank 42 rises to the stop water level, the float switch 48 is in the closed state, causing the water supply valve device 32 to close.

[0049] An overflow unit 62 is installed on the water storage tank 42, which is used to discharge cleaning water out of the tank, for example, when the float switch 48 fails but the water supply to the tank continues. The overflow unit 62 is connected to the drain connector 30, and the cleaning water overflowing from the water storage tank 42 is discharged into the drain connector 30 through the overflow unit 62.

[0050] The water supply valve device 32 includes: a constant flow valve (not shown) for maintaining a constant flow rate of cleaning water; a switch valve (not shown) located downstream of the constant flow valve for switching the supply and stop of cleaning water; and a solenoid valve (not shown) for driving the switch valve. The upstream side of the water supply valve device 32 is connected to a water source (not shown) via a stop valve 8 and a water supply pipe 10. The downstream side of the water supply valve device 32 is connected to a sanitary cleaning device 6 via a sanitary cleaning device water supply pipe 52, and simultaneously connected to a water tank device 4 via a water tank water supply pipe 44. When the solenoid valve is electromagnetically activated, the switch valve opens, and cleaning water from the water source is supplied to the water tank device 4 via the water tank water supply pipe 44.

[0051] Pump device 34 is a pressurized pump that draws in the cleaning water stored in the water tank device 4 and pressurizes it to deliver it to the toilet body 2. The upstream side of pump device 34 is connected to the water tank device 4 via an upstream connecting pipe 54, and the downstream side of pump device 34 is connected to the switching valve device 36 via a downstream connecting pipe 56. Through the operation of pump device 34, the cleaning water stored in water tank device 4 is pressurized and delivered and discharged from the inner edge outlet 22 and the jet outlet 26, thereby cleaning the toilet.

[0052] The switching valve device 36 has a switching valve body (not shown) that switches the water supply path from the pump device 34, which supplies cleaning water to the inner edge discharge port 22 and the jet discharge port 26. The upstream side of the switching valve device 36 is connected to the pump device 34 via a downstream connecting pipe 56. The downstream side of the switching valve device 36 is connected to the jet port 26 via an inner edge water supply pipe 58 and an inner edge water guide passage 24, and is also connected to the jet port 26 via an upstream jet guide pipe 60, a jet guide passage connecting pipe 100, and a downstream jet guide passage 28. When the switching valve body is closed, cleaning water from the pump device 34 is supplied to the inner edge discharge port 22; when the switching valve body is open, cleaning water from the pump device 34 is supplied to both the inner edge discharge port 22 and the jet port 26.

[0053] The control device 38 is electrically connected to the remote control (not shown), the water tank device 4 (especially the float switch 48), the sanitary cleaning device 6, the water supply valve device 32, and the pump device 34, and can send and receive various signals. When it receives a cleaning start signal from the remote control for a large or small cleaning cycle, the control device 38 will drive or stop the pump device 34 according to the pre-stored cleaning program.

[0054] Specifically, if the user operates the remote control, the control device 38 drives the pump device 34 to discharge the cleaning water stored in the water tank device 4 from the inner edge outlet 22 and the jet outlet 26. In addition, after the toilet is cleaned, the control device 38 opens the water supply valve device 32 to supply water to the water tank, and closes the water supply valve device 32 when the float switch 48 detects that the water is full.

[0055] The pipes (water supply pipe 10, water tank supply pipe 44, sanitary cleaning device supply pipe 52, upstream connecting pipe 54, downstream connecting pipe 56, inner edge water supply pipe 58, and upstream jet guide 60) connected to the various elements of the aforementioned functional device are flexible, allowing them to absorb manufacturing errors in the ceramic toilet body 2. On the other hand, the downstream jet guide 28 is formed as part of the ceramic toilet body 2.

[0056] Next, Figure 5 This is a structural diagram showing the water supply path through which the flushing water of the toilet 1 in this embodiment flows.

[0057] like Figure 5 As shown, the water supply path of the flush toilet 1 is equipped with a water stop valve 8, a water supply valve device 32, a water tank device 4, a pump device 34, and a switching valve device 36 from the upstream side.

[0058] First, cleaning water is supplied from the water source to the water supply valve device 32 via the water stop valve 8 and the water supply pipe 10. The cleaning water supplied to the water supply valve device 32 is then supplied to the sanitary cleaning device 6 via the sanitary cleaning device water supply pipe 52, and simultaneously supplied to the water tank device 4 via the water tank water supply pipe 44.

[0059] The cleaning water stored in the water tank device 4 is drawn by the pump device 34 through the upstream connecting pipe 54 and the suction port 34a of the pump device guide passage 34p. The drawn cleaning water is then supplied to the switching valve device 36 through the downstream connecting pipe 56.

[0060] The cleaning water supplied to the switching valve device 36 is discharged from the inner edge outlet 22 through the inner edge water supply pipe 58 and the inner edge water guide 24, and is simultaneously sprayed out from the spray port 26 through the downstream spray guide pipe 60, the spray guide connecting pipe 100 and the downstream spray guide 28.

[0061] The cleaning water that overflows from the water tank device 4 is discharged to the drain connector 30 via the overflow unit 62.

[0062] Next, Figure 6 This is a cross-sectional view of the flushing toilet 1 of this embodiment, which extends in the front-to-back direction along the vertical plane through the pump device 34 and the upstream connecting pipe 54.

[0063] As from Figure 2 , Figure 4A , Figure 4B and Figure 6 As is known, the upstream connecting pipe 54, pump device 34, upstream water supply pipe 56, switching valve device 36, upstream jet guide pipe 60, and jet guide connecting pipe 100 are arranged on the left side relative to the drainage bend pipe 14. The upstream portion of the downstream jet guide pipe 28, which is connected to the upstream jet guide pipe 60 by the jet guide connecting pipe 100, is also arranged on the left side relative to the drainage bend pipe 14.

[0064] To more clearly illustrate the relative positional relationships of these elements and components, Figure 7 The diagram shows a schematic perspective view of these components. Figure 8 The diagram shows a summary main view of these component elements. Figure 9 Arrows are used to indicate the flow of cleaning water through these structural components. Additionally, Figure 10 This is an enlarged cross-sectional view of the vicinity of the jet water guide connecting pipe 100.

[0065] Return to Figure 4A , Figure 4B and Figure 6In area A (the area not occupied by the L-shaped water tank 42) to the left of the drain bend 14, functional devices, namely pump device 34, switching valve device 36 and control device 38, are arranged. Pump device 34, control device 38 and switching valve device 36 are arranged in a row in the vertical direction in this order.

[0066] In addition, in this area A, there are: an upstream connecting pipe 54 connecting the water tank device 4 and the pump device 34; a downstream connecting pipe 56 connecting the pump device 34 and the switching valve device 36; and an upstream jet guide pipe 60 (upstream jet guide path).

[0067] The pump assembly 34 is configured to face the rear wall 72b of the left side region 72 of the water storage tank 42 in a generally front-to-back direction. Furthermore, the pump assembly 34 is positioned at approximately the same height as the upper wall 72a of the left side region 72.

[0068] The outflow pipe 72c, which extends rearward from the left side region 72 of the water storage tank 42, is a pipe that draws cleaning water from the water storage tank 42 from the suction port 72e. Its outlet 72d is connected to the suction port 34a of the pump device guide water passage 34p of the pump device 34 via the upstream connecting pipe 54.

[0069] The control device 38 is fixed to the top of the pump device 34, and the switching valve device 36 is fixed to the top of the control device 38. The downstream connecting pipe 56 connecting the pump device 34 and the switching valve device 36 is arranged near the control device 38, and is arranged in parallel with the control device 38.

[0070] When viewed from above, the pump assembly 34, control unit 38, and switching valve assembly 36 are configured such that at least a portion overlaps. When viewed from above, the switching valve assembly 36 is located on the outer periphery of the pump assembly 34 and inside the outer periphery of the control unit 38. When viewed from above, the downstream connecting pipe 56 is located inside the outer periphery of the pump assembly 34.

[0071] (Characteristic structure (1)) In the flush toilet 1 of this embodiment, especially as Figure 6 and Figure 10 As shown, the jet guide pipe 100 (the connection between the upstream jet guide pipe 60 and the downstream jet guide pipe 28) is located closer to the rear side than the jet nozzle 26 and closer to the bottom than the water surface WS.

[0072] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 6 and Figure 10 As shown, the jet water guide pipe 100 is located below the basin 12 (when viewed from above, it is located on the inner side of the outer periphery of the basin 12).

[0073] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 2 , Figure 6 and Figure 10 As shown, the jet guide pipe 100 is located closer to the upper side than the lower end of the jet port 26 (the opening).

[0074] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 6 and Figure 10 As shown, the jet water guide connecting pipe 100 is watertightly installed on the rear end face 104 of the ceramic part that divides the downstream jet water guide 28 by means of the double mounting sleeves 101 and 102 and the annular sealing member 103.

[0075] In addition, in the flush toilet 1 of this embodiment, the upstream jet water guide pipe 60 is made of a flexible resin hose.

[0076] Furthermore, in the flush toilet 1 of this embodiment, as described above, the upstream connecting pipe 54, pump device 34, upstream water supply pipe 56, switching valve device 36, upstream jet guide pipe 60 and jet guide path connecting pipe 100 are arranged on the left side relative to the drain bend pipe 14.

[0077] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 2 , Figure 7 and Figure 8 As shown, the jet nozzle 26 opens to the rear in a direction aligned in the front-rear direction, and the jet water guide pipe 100 also extends in a direction aligned in the front-rear direction.

[0078] (Characteristic structure (2)) In the flush toilet 1 of this embodiment, the pump device 34 draws cleaning water from the left side region 72 of the water storage tank 42 through the suction port 72e of the outflow pipe 72c (suction section), the outflow pipe 72c, the upstream connecting pipe 54, and the suction port 34a of the pump device water guide passage 34p.

[0079] Furthermore, the outflow pipe 72c (including the suction port 72e) is also located on the left side relative to the drain bend pipe 14, just like the upstream connecting pipe 54 and the pump device 34.

[0080] In addition, in the flush toilet 1 of this embodiment, the outflow pipe 72c (including the suction port 72e) is open in a direction aligned in the front and back directions, and the jet water guide pipe 100 also extends in a direction aligned in the front and back directions.

[0081] Therefore, in the flush toilet 1 of this embodiment, especially as Figure 9As shown, the flow direction of the cleaning water when it flows through the outflow pipe 72c is back-to-back, and the flow direction when it flows through the jet guide pipe 100 is also back-to-back.

[0082] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 6 As shown, the outflow pipe 72c is also located below the basin 12 (when viewed from above, it is located on the inner side of the outer periphery of the basin 12).

[0083] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 6 and Figure 9 As shown, all water channels from the outflow pipe 72c to the jet water channel connecting pipe 100 are arranged on the same left side as the outflow pipe 72c and the pump device 34 relative to the drain bend pipe 14. They are arranged so that they do not overlap with the drain bend pipe 14 when viewed from above, and are located closer to the bottom than the inner edge 20.

[0084] (Based on the effect of characteristic structure (1)) According to the flush toilet 1 of the above embodiment, since the jet water guide pipe 100 is located closer to the bottom than the water surface WS, a compact layout can be achieved.

[0085] Conventionally, it is common practice to place the jet guide pipe 100 (connection portion) between the ceramic downstream jet guide pipe 28 and the resin upstream jet guide pipe 60 (upstream jet guide pipe) at a position closer to the upper part of the water surface WS. However, in the flush toilet 1 of this embodiment, the water tightness around the jet guide pipe 100 is ensured by using an annular sealing member 103 or the like, thereby eliminating such a convention.

[0086] Furthermore, according to the flush toilet 1 of this embodiment, since the jet water guide pipe 100 is located below the basin 12 (it is configured to make effective use of the area below the basin 12), a compact layout can also be achieved.

[0087] A more compact layout can be achieved if the connection between the upstream and downstream water guide channels is allowed to be located lower than the water surface and below the basin. (However, a compact layout can also be achieved even if part or all of the connection between the upstream and downstream water guide channels is located below the inner edge rather than below the basin.)

[0088] Furthermore, according to the flush toilet 1 of this embodiment, the annular sealing member 103 ensures the watertightness between the jet water guide connecting pipe 100 (or the mounting sleeves 101, 102) and the rear end face 104 of the ceramic part that divides the downstream jet water guide path 28. This reliably prevents leakage of cleaning water (or sewage in case of backflow) around the jet water guide connecting pipe 100.

[0089] Furthermore, according to the flush toilet 1 of this embodiment, since the upstream jet water guide pipe 60 is made of a flexible resin hose, the design freedom of the upstream jet water guide pipe 60 is increased.

[0090] Furthermore, according to the flush toilet 1 of this embodiment, since the jet water guide pipe 100 is located closer to the upper side than the lower end of the jet nozzle 26 (the opening), there is no path for the flushing water to rise, resulting in good pressure loss efficiency.

[0091] Furthermore, according to the flush toilet 1 of this embodiment, since the upstream connecting pipe 54, pump device 34, upstream water supply pipe 56, switching valve device 36, upstream jet guide pipe 60 and jet guide pipe connecting pipe 100 are arranged on the left side relative to the drain bend pipe 14, a more compact layout can be achieved and the pressure loss efficiency is also good.

[0092] Furthermore, according to the flush toilet 1 of this embodiment, since the jet nozzle 26 opens to the rear in the direction aligned in the front-rear direction, and the jet guide water connecting pipe 100 also extends in the direction aligned in the front-rear direction, a more compact layout can be achieved, and the pressure loss efficiency is also good.

[0093] (Based on the effect of characteristic structure (2)) Furthermore, in the flush toilet 1 of this embodiment described above, the outflow pipe 72c (including the suction port 72e), like the upstream connecting pipe 54 and the pump device 34, is positioned on the left side relative to the drain bend pipe 14. Thus, with the outflow pipe 72c, the pump device 34, and the jet water guide connecting pipe 100 positioned on the left side (same side) relative to the drain bend pipe 14, a compact layout can be achieved, and the pressure loss efficiency of the jet water discharge can be improved.

[0094] Furthermore, according to the flush toilet 1 of this embodiment, since the outlet pipe 72c is open in the direction aligned in the front and back directions, and the jet water guide pipe 100 also extends in the direction aligned in the front and back directions, a more compact layout can be achieved, and the pressure loss efficiency of the jet water discharge can be further improved.

[0095] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 9As shown, the flow direction of the cleaning water flowing through the outflow pipe 72c is back-to-back, and the flow direction of the water flowing through the jet guide pipe 100 is also back-to-back. This feature also allows for a more compact layout and further improves the pressure loss efficiency of the jet water discharge.

[0096] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 6 As shown, the outflow pipe 72c is also located below the basin 12 (when viewed from above, it is positioned inside the outer periphery of the basin 12). This feature also allows for a more compact layout.

[0097] Furthermore, in the flush toilet 1 of this embodiment, especially as Figure 6 and Figure 9 As shown, the entire water guide path from the outflow pipe 72c to the jet water guide connecting pipe 100 is positioned on the same left side as the outflow pipe 72c and the pump device 34, relative to the drain bend pipe 14. It is configured so that it does not overlap with the drain bend pipe 14 when viewed from above, and is located closer to the bottom than the inner edge 20. Each of these features, and / or combinations thereof, allows for a more compact layout, further improving the pressure loss efficiency of the jet water discharge.

[0098] (Variation Example 1) In the aforementioned embodiments, the outflow pipe 72c (suction section) penetrates the rear wall 72b of the left side region 72 of the water storage tank 42, and the jet guide water path connecting pipe 100 (the connection between the upstream jet guide water path 60 and the downstream jet guide water path 28) penetrates the rear wall of the ceramic part that divides the downstream jet guide water path 28, but the present invention is not limited to these connection types.

[0099] For example, the suction section for absorbing cleaning water from the water storage tank 42 can also be constructed by connecting the connection surface of the tank-side pipe to the connection surface of the pump-side pipe. Similarly, the connection between the upstream jet guide path and the downstream jet guide path can also be constructed by connecting the connection surface of the upstream jet guide path to the connection surface of the downstream guide path.

[0100] When using these types, it is preferable that the connection surfaces of the tank-side pipes, the pump-side pipes, the upstream water guide pipes, and the downstream water guide pipes are aligned in a parallel manner. This allows for a more compact layout.

[0101] (Variation Example 2) In the aforementioned embodiment and variation 1, the flushing toilet 1 is wall-mounted. When the flushing toilet (flushing toilet device) having the features of the aforementioned embodiment and variation 1 is wall-mounted, the advantage of "achieving a compact layout" can be effectively utilized.

[0102] However, at least at the time of this application, the flushing toilet device of the present invention is not limited to wall-mounted type, but can also be floor-standing type. Even when it is floor-standing, the same effect as described above can be achieved.

[0103] Furthermore, the present invention also includes the following features (invention). [Feature 1] A flushing toilet device. It includes: a flush toilet body, having a basin and a drain bend extending from the lower part of the basin; The nozzle sprays cleaning water backwards into the interior of the drain bend pipe; The water jet guide path directs the cleaning water to the jet nozzle; Water tank, for temporary storage of cleaning water; The pump, through the suction section of the water tank, draws cleaning water stored in the water tank, characterized in that... The jet guide channel includes: a downstream guide channel leading to the jet nozzle; and an upstream guide channel connected to the downstream guide channel. The downstream water guide is made of ceramic. The suction unit and the pump are positioned on either the left or right side relative to the drain bend. The connection between the upstream water guide and the downstream water guide is also positioned on either the left or right side of the drainage bend, corresponding to the suction section and the pump. [Feature 2] The flushing toilet device described in Feature 1 is characterized by the following: The suction section has an opening aligned in the front-to-back direction. The connection between the upstream water guide and the downstream water guide also extends in the front-to-back direction. [Feature 3] The flushing toilet device described in feature 1 or 2 is characterized by, The suction section is formed by connecting the connection surface of the water tank side pipe and the connection surface of the pump side pipe. The connection between the upstream water guide channel and the downstream water guide channel is formed by the connection between the connecting surfaces of the upstream and downstream water guide channels. The connecting surfaces of the water tank side pipe, the pump side pipe, the upstream water guide pipe, and the downstream water guide pipe are aligned in a parallel manner. [Feature 4] The flushing toilet device described in any one of features 1 to 3 is characterized by the following: The cleaning water flowing through the suction section flows in a back-to-back direction. The direction of the cleaning water flowing through the connection between the upstream water guide and the downstream water guide is also in the front-to-back direction. [Feature 5] The flushing toilet device described in any one of features 1 to 4 is characterized by the following: The connection between the upstream water guide channel and the downstream water guide channel is located below the basin. The suction section is also located below the basin. [Feature 6] The flushing toilet device described in any one of features 1 to 5 is characterized in that all water passages from the suction section to the connection between the upstream water passage and the downstream water passage are arranged on either the left or right side, the same as the suction section and the pump, relative to the drain bend. [Feature 7] The flushing toilet device described in any one of features 1 to 6 is characterized in that, when viewed from above, the entire water passage from the suction section to the connection between the upstream water passage and the downstream water passage is configured not to overlap with the drain bend. [Feature 8] The flushing toilet device described in any one of features 1 to 7 is characterized in that all water passages from the suction section to the shown connection between the upstream water passage and the downstream water passage are located closer to the bottom than the inner edge. [Feature A1] A flushing toilet device. It includes: a flush toilet body, having a basin and a drain bend extending from the lower part of the basin; The nozzle sprays cleaning water backwards into the interior of the drain bend pipe; The water jet guide path directs the cleaning water to the jet nozzle; Water tank, for temporary storage of cleaning water; The pump, through the suction section of the water tank, draws cleaning water stored in the water tank, characterized in that... The jet guide channel includes: a downstream guide channel leading to the jet nozzle; and an upstream guide channel connected to the downstream guide channel. The downstream water guide is made of ceramic. The suction section has an opening aligned in the front-to-back direction. The connection between the upstream water guide and the downstream water guide also extends in the front-to-back direction. [Feature A2] A flushing toilet device. It includes: a flush toilet body, having a basin and a drain bend extending from the lower part of the basin; The nozzle sprays cleaning water backwards into the interior of the drain bend pipe; The water jet guide path directs the cleaning water to the jet nozzle; Water tank, for temporary storage of cleaning water; The pump, through the suction section of the water tank, draws cleaning water stored in the water tank, characterized in that... The jet guide channel includes: a downstream guide channel leading to the jet nozzle; and an upstream guide channel connected to the downstream guide channel. The downstream water guide is made of ceramic. The suction section is formed by connecting the connection surface of the water tank side pipe and the connection surface of the pump side pipe. The connection between the upstream water guide channel and the downstream water guide channel is formed by the connection between the connecting surfaces of the upstream and downstream water guide channels. The connecting surfaces of the water tank side pipe, the pump side pipe, the upstream water guide pipe, and the downstream water guide pipe are aligned in a parallel manner.

Claims

1. A flush toilet device, provided with: a flush toilet body having a bowl portion and a drain trap line extending from a lower portion of the bowl portion; a jet port discharging cleaning water toward the rear inside of the drain trap line; a jet water guide channel guiding the cleaning water to the jet port; a water tank temporarily storing the cleaning water; and a pump sucking the cleaning water stored in the water tank through a suction portion of the water tank, characterized in that: the jet water guide channel has a downstream-side water guide channel reaching the jet port, and an upstream-side water guide channel connected to the downstream-side water guide channel, the downstream-side water guide channel is made of ceramic, the suction portion and the pump are disposed on either side of the drain trap line in the left-right direction, and a connection portion between the upstream-side water guide channel and the downstream-side water guide channel is also disposed on either side of the drain trap line in the left-right direction as with the suction portion and the pump.

2. The flush toilet device according to claim 1, characterized in that: the suction portion is open in a direction in which the suction portion is aligned in the front-rear direction, and the connection portion between the upstream-side water guide channel and the downstream-side water guide channel also extends in the front-rear direction.

3. The flush toilet device according to claim 1, characterized in that: the suction portion is constituted by joining a connection surface of a water tank-side line and a connection surface of a pump-side line, the connection portion between the upstream-side water guide channel and the downstream-side water guide channel is constituted by joining the connection surface of the upstream-side water guide channel and the connection surface of the downstream-side water guide channel, and the connection surface of the water tank-side line, the connection surface of the pump-side line, the connection surface of the upstream-side water guide channel, and the connection surface of the downstream-side water guide channel are aligned in parallel with each other.

4. The flush toilet device according to claim 1, characterized in that: a flow direction of the cleaning water flowing through the suction portion is the front-rear direction, and a flow direction of the cleaning water flowing through the connection portion between the upstream-side water guide channel and the downstream-side water guide channel is also the front-rear direction.

5. The flush toilet device according to any one of claims 1 to 4, characterized in that: the connection portion between the upstream-side water guide channel and the downstream-side water guide channel is located below the bowl portion, the suction portion is also located below the bowl portion, all of the water guide channels from the suction portion to the connection portion between the upstream-side water guide channel and the downstream-side water guide channel are disposed on either side of the drain trap line in the left-right direction as with the suction portion and the pump, when viewed from above, all of the water guide channels from the suction portion to the connection portion between the upstream-side water guide channel and the downstream-side water guide channel are disposed so as not to overlap the drain trap line, and all of the water guide channels from the suction portion to the connection portion between the upstream-side water guide channel and the downstream-side water guide channel are located closer to the lower side than an inner edge portion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 6. A water-flushing toilet arrangement according to any one of claims 1 to 4, characterized in that ​ 7. A water-flushing toilet arrangement according to claim 6, c h a r a c t e r i s e d i n that ​ 8. A water-flushing toilet arrangement according to claim 7, characterized in that ​

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