Water-washable toilet

Abstract

The present invention aims to provide a flush toilet in which a constricting member can be easily attached to the drain socket. [Solution] The present invention relates to a siphon-type flush toilet 1, comprising: a bowl portion 6 having a waste receiving surface 18 for receiving waste and a rim portion 20 formed above the waste receiving surface 18; a rim outlet 10 provided on the rim portion 20 for discharging flushing water into the bowl portion 6; a drain trap pipe 8 having an upward pipe 8b connected to the lower part of the bowl portion 6 and extending upward, a downward pipe 8c extending downward from the upward pipe 8b, and a top portion 8d located between the downward pipe 8c and the upward pipe 8b; a drain socket 30 for connecting the drain trap pipe 8 to a drain pipe; and a restricting member 40 attached to the drain socket 30 for reducing the cross-sectional area of ​​the flow path through which flushing water flows. The restricting member 40 is made of a different material from the material of the drain socket 30 and is mechanically fitted and attached to the drain socket 30.

Description

Technical Field

[0001] The present invention relates to a flushing toilet, and particularly to a siphon-type flushing toilet that discharges dirt by siphon action.

Background Art

[0002] Conventionally, as described in Patent Document 1, there is known a flushing toilet provided with a drain socket that connects a drain trap pipe and a drain pipe. In such a flushing toilet, a throttle member that reduces the flow path cross-sectional area is provided at the downstream end of the drain socket. As a result, the washing water stays near the throttle member, so that the siphon action is maintained and the discharge performance of dirt is improved.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in a flushing toilet such as that of Patent Document 1, the throttle member is formed of the same resin material as the drain socket. Therefore, the throttle member needs to be attached to the drain socket by welding with an adhesive. This welding operation using an adhesive has a problem that it takes a long time (about 24 hours) from the start of the operation to the completion of the welding.

[0005] Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to provide a flushing toilet that can easily attach a throttle member to a drain socket.

Means for Solving the Problems

[0006] To solve the above-mentioned problems, the present invention provides a siphon-type flush toilet that discharges waste by siphon action, comprising: a bowl portion having a waste receiving surface for receiving waste and a rim portion formed above the waste receiving surface; a drain trap pipe comprising a spout provided in the rim portion for discharging flushing water into the bowl portion; an upward pipe connected to the lower part of the bowl portion and extending upward; a downward pipe extending downward from the upward pipe; and a top portion located between the downward pipe and the upward pipe; a drain socket for connecting the drain trap pipe to a drain pipe; and a restricting member attached to the drain socket for reducing the cross-sectional area of ​​the flow path through which the flushing water flows, wherein the restricting member is made of a material different from the material of the drain socket and is mechanically fitted and attached to the drain socket. In the present invention configured in this way, the throttling member is made of a different material from the material of the drain socket and is mechanically fitted and attached to the drain socket, so that the throttling member can be easily attached to the drain socket without welding with adhesive.

[0007] In the present invention, preferably, the throttling member is formed of a material having chemical resistance. In the present invention configured in this way, the throttling member is made of a chemical-resistant material, so that the throttling member is not affected by chemicals and can be stably fixed to the drain socket.

[0008] Furthermore, in the present invention, preferably, the throttling member is provided with ribs to fill the gap between the drain socket and the throttling member. In the present invention configured in this way, the throttling member is provided with ribs to fill the gap between the drain socket and the throttling member, thereby preventing cleaning water from flowing into the gap between the throttling member and the drain socket, and preventing a decrease in siphon performance.

[0009] In the present invention, preferably, the throttling member or drain socket is provided with a plurality of guide ribs extending inward, and these guide ribs are arranged parallel to each other. In the present invention configured as described above, the throttling member or drain socket is provided with a plurality of guide ribs extending inward, and these guide ribs are arranged parallel to each other, so that waste can be guided downstream and the siphon performance can be improved. As a result, the waste discharge performance can be improved.

[0010] Furthermore, in the present invention, preferably, a plurality of guide ribs are provided in the collision region of the restricting member or drain socket, where most of the cleaning water flowing through the restricting member or drain socket collides. In the present invention configured in this way, the multiple guide ribs are provided in the collision region of the throttling member or drain socket, where most of the washing water flowing through the throttling member or drain socket collides. This allows the dirt that collides with the washing water to be guided in the discharge direction by the multiple guide ribs, and also allows most of the washing water to be retained by colliding with the multiple guide ribs, thereby enabling the siphon effect to be generated early. [Effects of the Invention]

[0011] The present invention provides a flush toilet that allows for easy attachment of a throttling member to the drain socket. [Brief explanation of the drawing]

[0012] [Figure 1] This is a top view showing a flush toilet according to the first embodiment of the present invention. [Figure 2] This is a side cross-sectional view taken along line II-II in Figure 1. [Figure 3] This is an exploded perspective view of the drain socket and throttling member of a flush toilet according to the first embodiment of the present invention. [Figure 4] This is a side cross-sectional view of a drain socket and a restrictor member of a flush toilet according to the first embodiment of the present invention. [Figure 5A] This is a top cross-sectional view along the VA-VA line in Figure 4. [Figure 5B] Figure 4 is a top cross-sectional view along the VB-VB line. [Figure 5C] It is a top cross-sectional view seen along the VC-VC line in FIG. 4. [Figure 6] It is an enlarged view of part A in FIG. 4. [Figure 7] It is a perspective view of the throttle member of the water-washing toilet according to the second embodiment of the present invention. [Figure 8] It is a top view of the throttle member of the water-washing toilet according to the second embodiment of the present invention.

Embodiments for Carrying out the Invention

[0013] Hereinafter, the water-washing toilet 1 according to the first embodiment of the present invention will be described. First, the basic structure of the water-washing toilet 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a top view showing the water-washing toilet according to the first embodiment of the present invention, and FIG. 2 is a side cross-sectional view seen along the II-II line in FIG. 1. In FIG. 1, the rim water channel, the jet water channel, and the drain trap pipeline are shown by dotted lines. In this specification, when the water-washing toilet is viewed from the front, the front side is referred to as "front", the back side as "rear", the left side as "left", and the right side as "right" for description.

[0014] As shown in FIGS. 1 and 2, the water-washing toilet 1 according to the first embodiment of the present invention includes a ceramic toilet body 2, a resin toilet seat and lid (not shown) disposed on the upper surface of the toilet body 2, and a water storage tank 4 disposed at the upper rear of the toilet body 2 and covered by a resin cover (not shown).

[0015] The toilet body 2 is formed with a bowl portion 6 for receiving dirt, a drain trap pipeline 8 connected below the bowl portion 6 for discharging dirt, a rim water outlet 10 for performing rim water discharge, a rim water channel 12 for supplying washing water to the rim water outlet 10, a jet water outlet 14 for performing jet water discharge, and a jet water channel 16 for supplying washing water to the jet water outlet 14.

[0016] The bowl portion 6 comprises a bowl-shaped waste receiving surface 18, a rim portion 20 formed along the upper edge of the bowl portion 6, and a shelf portion 21 formed between the waste receiving surface 18 and the rim portion 20. The bowl portion 6 also includes a pot portion 22 formed below the waste receiving surface 18, in which accumulated water W is formed.

[0017] The drain trap pipe 8 comprises an inlet 8a, an upward pipe 8b extending upward from the inlet 8a, a downward pipe 8c extending downward from the upward pipe 8b, and a top 8d located between the downward pipe 8c and the upward pipe 8b, which defines the water level of the accumulated water W. Here, the downstream end 8e of the descending pipe 8c of the drain trap pipe 8 is connected via a drain socket 30 to a drain pipe (not shown) installed on the floor surface FL.

[0018] The rim spout 10 is formed on the left rear side of the rim portion 20 when the toilet bowl body 2 is viewed from the front. The rim spout 10 discharges flushing water forward, and this flushing water flows down to the waste receiving surface 18 while swirling on the inner circumferential surface of the rim portion 20 and the shelf surface of the shelf portion 21.

[0019] The rim water channel 12 is formed in a tapered shape, with the cross-sectional area of ​​the channel gradually decreasing towards the rim outlet 10. A rim water supply hose 13, which is directly connected to the water supply, is connected to the upstream side of the rim water channel 12. Cleaning water is supplied to the rim water channel 12 from the water supply, and the cleaning water is discharged from the rim outlet 10 due to the water supply pressure from the water supply.

[0020] The jet outlet 14 is formed below the bowl portion 6. The jet outlet 14 is positioned opposite the inlet 8a of the drain trap pipe 8 and is directed toward the inlet 8a of the drain trap pipe 8. The jet outlet 14 discharges cleaning water toward the inlet 8a of the drain trap pipe 8, and this cleaning water flows into the drain trap pipe 8 to activate a siphon effect.

[0021] The jet conduit 16 is formed in a U-shape overall (see Figure 1). The jet conduit 16 comprises an upstream channel 16a extending forward from the water storage tank 4, a bent channel 16b that bends from the upstream channel 16a, and a downstream channel 16c that extends backward from the bent channel 16b and connects to the jet outlet 14. Cleaning water is supplied to the jet conduit 16 from the water storage tank 4, and the cleaning water is discharged from the jet outlet 14 due to the head pressure of this cleaning water.

[0022] The water storage tank 4 is a gravity-fed tank that stores the cleaning water used for jet discharge and supplies it to the jet outlet 14. The water storage tank 4 is a small resin tank with a volume of approximately 3 liters. Inside the water storage tank 4, there is a drainage device 26 that supplies or stops the cleaning water stored in the water storage tank 4 to the jet water conduit 16. In addition, cleaning water is supplied into the water storage tank 4 by a water supply device 24. The water supply device 24 also supplies cleaning water to the rim water supply hose 13. Note that the water source for supplying cleaning water to the jet outlet 14 is not limited to the gravity-fed water storage tank shown in this embodiment, and a water storage tank equipped with a pump such as a pressure pump, jet pump, or accumulator pump may also be used.

[0023] Next, the drain socket 30 and the restricting member 40 of the flush toilet 1 according to the first embodiment of the present invention will be described in detail with reference to Figures 3 to 6. Figure 3 is an exploded perspective view of the drain socket and constriction member of a flush toilet according to the first embodiment of the present invention, Figure 4 is a side cross-sectional view of the drain socket and constriction member of a flush toilet according to the first embodiment of the present invention, Figures 5A to 5C are top cross-sectional views along the VA-VA line to the VC-VC line in Figure 4, and Figure 6 is an enlarged view of part A in Figure 4. In Figure 4, the flow of flushing water F is indicated by arrows.

[0024] As shown in Figures 3 and 4, the restricting member 40 is attached as a separate component to the outside of the downstream end of the drain socket 30. The restricting member 40 has the function of reducing the cross-sectional area of ​​the flow path through which the flushing water flows, thereby causing the siphon effect to occur earlier and sustaining the siphon effect. The drain socket 30 includes a toilet-side connection part 32 that connects to the drain trap pipe 8, an eccentric flow path part 34 that is eccentrically offset forward from the toilet-side connection part 32, a straight flow path part 36 that extends vertically downward from the eccentric flow path part 34 and connects to the drain pipe, and a fixing part 38 for fixing the drain socket 30 to the floor surface FL. The drain socket 30 is made of polyvinyl chloride (PVC).

[0025] The toilet-side connection portion 32 is formed in a cylindrical shape, into which the downstream end 8e of the drain trap pipe 8 is inserted. A rubber gasket (not shown) is interposed between the drain trap pipe 8 and the toilet-side connection portion 32, and the drain socket 30 is connected to the drain trap pipe 8 in a watertight manner.

[0026] The eccentric flow channel section 34 has a flow channel formed in which its central axis is eccentric to the front. The rear wall section 34a of the eccentric flow channel section 34 curves concavely downwards and slopes downwards to the front, while the front wall section 34b of the eccentric flow channel section 34 curves convexly upwards and slopes downwards to the front. As a result, most of the cleaning water F that exceeds the top 8d of the drain trap pipe 8 is affected by the centrifugal force generated by the shape of the drain trap pipe 8 and flows toward the rear wall section 34a and collides with the rear wall section 34a. Most of the cleaning water F that collides with the rear wall section 34a is affected by the centrifugal force generated by the shape of the drain socket 30 and flows toward the front downwards and collides with the front wall section 36b (collision region) of the straight flow channel section 36.

[0027] Referring to Figures 5A to 5C, the straight channel section 36 has a substantially circular channel cross-section and a channel that extends linearly downward in the vertical direction. Guide ribs 36b extending inward are formed on the front wall section 36a (collision area) where most of the washing water F flowing inside the drain socket 30 collides. The guide ribs 36b have the function of guiding the dirt that collides with the washing water toward the discharge direction and retaining the washing water to generate a siphon effect early. Three guide ribs 36b are provided. In a top view, the guide ribs 36b are arranged parallel to each other and at equal intervals. The guide ribs 36b are formed as plate-shaped ribs extending to the rear. The guide ribs 36b extend from the upper end to the lower end of the straight channel section 36. In a top view, the guide ribs 36b extend to the vicinity of the inner peripheral edge of the opening 40c of the throttling member 40. Furthermore, the guide rib 36b is designed so that, when viewed from above, it does not extend inward beyond the inner periphery of the opening 40c of the aperture member 40. This ensures that the cross-sectional area of ​​the straight flow channel 36 does not become smaller than the opening area of ​​the opening 40c of the aperture member 40.

[0028] As shown in Figures 3, 4, and 5C, mounting holes 36c for attaching the throttling member 40 are provided at the downstream end of the straight channel section 36. Three mounting holes 36c are provided. In a top view, the mounting holes 36c are arranged at equal intervals along the outer circumference of the straight channel section 36 (see Figure 5C).

[0029] The throttling member 40 comprises a bottom surface portion 40a, a side surface portion 40b extending upward from the outer peripheral edge of the bottom surface portion 40a, an opening 40c formed in the bottom surface portion 40a, a mounting portion 40d for attaching to the drain socket 30, and a claw portion 40e provided on the mounting portion 40d. The throttling member 40 is made of polypropylene (PP resin), which is a different material from the drain socket 30. Polypropylene is an elastically deformable material. Furthermore, polypropylene is a chemically resistant material, and the throttling member 40 is made of a chemically resistant material. In addition, glass material may be mixed into the polypropylene to improve chemical resistance.

[0030] An opening 40c smaller than the cross-sectional area of ​​the straight channel section 36 is formed in the bottom surface 40a. The outer edge of the bottom surface 40a and the inner edge of the opening 40c are formed in a circular shape. The center of the circle in the opening 40c is eccentrically positioned rearward from the center of the circle in the bottom surface 40a. As a result, the surface area of ​​the front region of the bottom surface 40a is larger than the surface area of ​​the rear region. The washing water flowing forward and downward from the eccentric channel section 34 collides with the front region of the bottom surface 40a, then its flow direction is changed to the rear, sealing the opening 40c with water. This causes the siphon effect to occur early and to be sustained.

[0031] As shown in Figure 3, the mounting portion 40d is formed with a snap-fit ​​structure. Three mounting portions 40d are provided. The mounting portions 40d are arranged at equal intervals along the inner circumference of the throttling member 40. Each mounting portion 40d is provided with a claw portion 40e that protrudes inward. Each claw portion 40e is positioned to fit into each mounting hole 36c of the straight flow channel 36. The mounting portions 40d are formed to be elastically deformable. When the throttling member 40 is inserted into the drain socket 30, the mounting portion 40d elastically deforms outward, and when the claw portion 40e fits into the mounting hole 36c, the mounting portion 40d returns to its original state. This allows the throttling member 40 to be mechanically fitted and attached to the drain socket 30 without welding with adhesive. In the first embodiment of the flush toilet 1, the restrictor member was attached to the drain socket by a snap-fit ​​structure, but the invention is not limited to this, and the restrictor member may be mechanically fitted and attached to the drain socket by other structures.

[0032] As shown in Figure 6, the restricting member 40 is provided with a rib portion 40f to prevent flushing water from flowing into the gap S between the drain socket 30 and the restricting member 40. If flushing water flows into the gap S, it will cause a decrease in siphon performance, but in the flush toilet 1 of this embodiment, the rib portion 40f is provided in the gap S, so that a decrease in siphon performance can be prevented. The rib portion 40f is formed to extend vertically upward from the bottom surface portion 40a of the restricting member 40. In a top view, the rib portion 40f is formed in a circular shape along the outer edge of the bottom surface portion 40a. When the restricting member 40 is attached to the drain socket 30, the rib portion 40f is pressed and crushed by the lower end of the drain socket 30. As a result, the gap S between the drain socket 30 and the restricting member 40 is filled by the rib portion 40f, preventing flushing water from flowing into the gap S.

[0033] The effects and benefits of the first embodiment described above will be explained below. First, in the flush toilet 1 according to the first embodiment of the present invention, the restrictor member 40 is made of a different material from the material of the drain socket 30 and is mechanically fitted and attached to the drain socket 30, so that the restrictor member 40 can be easily attached to the drain socket 30 without welding with adhesive.

[0034] Furthermore, in the flush toilet 1 according to the first embodiment of the present invention, the constricting member 40 is made of a chemical-resistant material, so that the constricting member 40 is not affected by chemicals and can be stably fixed to the drain socket 30.

[0035] In the flush toilet 1 according to the first embodiment of the present invention, the restrictor member 40 is provided with a rib portion 40f for filling the gap S between the drain socket 30 and the restrictor member 40, thereby preventing flushing water from flowing into the gap S between the restrictor member 40 and the drain socket 30, and preventing a decrease in siphon performance.

[0036] Furthermore, in the flush toilet 1 according to the first embodiment of the present invention, the drain socket 30 is provided with a plurality of guide ribs 36b extending inward, and since these guide ribs 36b are arranged parallel to each other, waste can be guided downstream and the siphon performance can be improved. This improves the waste discharge performance.

[0037] In the flush toilet 1 according to the first embodiment of the present invention, the multiple guide ribs 36b are provided in the collision region (front wall portion 36a) of the drain socket 30, where most of the flushing water flowing inside the drain socket 30 collides. This allows the waste that collides with the flushing water to be guided in the discharge direction by the multiple guide ribs 36b, and also allows most of the flushing water to collide with the multiple guide ribs 36b and remain there, thus enabling the siphon effect to be generated early.

[0038] Next, a flush toilet according to a second embodiment of the present invention will be described with reference to Figures 7 and 8. Except for the shape of the constricting member, the basic configuration is the same as that of the flush toilet 1 according to the first embodiment of the present invention described above. The following describes only the differences from the flush toilet 1 according to the first embodiment, and omits the explanation of similar configurations, operations, and effects.

[0039] Figure 7 is a perspective view of a throttling member for a flush toilet according to a second embodiment of the present invention, and Figure 8 is a top view of a throttling member for a flush toilet according to a second embodiment of the present invention.

[0040] As shown in Figures 7 and 8, the throttling member 50 comprises a bottom surface portion 50a, a side surface portion 50b extending upward from the outer peripheral edge of the bottom surface portion 50a, an opening 50c formed in the bottom surface portion 50a, a mounting portion 50d for attaching the throttling member 50 to the drain socket 30, a claw portion 50e provided on the mounting portion 40d, and a guide rib 50f provided on the bottom surface portion 50a and extending vertically upward.

[0041] The surface area of ​​the front region of the bottom surface 50a of the throttling member 50 is larger than the surface area of ​​the rear region. Most of the washing water F flowing through the drain socket 30 is affected by the centrifugal force generated by the shape of the drain socket 30 and collides with the front region (collision region) of the bottom surface 50a. Guide ribs 50f extending linearly in the front-rear direction are provided in this front region of the bottom surface 50a (see Figure 8). Five guide ribs 50f are provided and are arranged parallel to each other and at equal intervals when viewed from above. The guide ribs 50f are formed of plate-shaped ribs extending upward from the bottom surface 50a. When viewed from above, the guide ribs 50f extend to near the inner periphery of the opening 50c of the throttling member 50. Furthermore, when viewed from above, the guide ribs 50f do not extend inward beyond the inner periphery of the opening 50c of the throttling member 50. This prevents the flow path cross-sectional area from becoming smaller than the opening area of ​​the opening 50c of the throttling member 50.

[0042] In the flush toilet 1 according to the second embodiment of the present invention, the throttling member 50 is provided with a plurality of guide ribs 50f extending inward, and these guide ribs 50f are arranged parallel to each other, so that waste can be guided downstream and the siphon performance can be improved. As a result, the waste discharge performance can be improved.

[0043] Furthermore, in the flush toilet 1 according to the second embodiment of the present invention, the multiple guide ribs 50f are provided in the collision region of the constricting member 50 (the forward region of the bottom surface 50a) where most of the flushing water flowing inside the constricting member 50 collides. This allows the waste flowing with the flushing water to be guided in the discharge direction by the multiple guide ribs 50f, and also allows most of the flushing water to be made to collide with the multiple guide ribs 50f and remain there, thereby enabling the siphon effect to be generated early.

[0044] The present invention is not limited to the embodiments described above, and various modifications and variations are possible within the scope of the technical idea described in the claims. [Explanation of Symbols]

[0045] 1: Flush toilet in the first embodiment 6: Bowl section 8: Drain trap pipe 8a: Inlet of drain trap pipe 8b: Rising pipe for drain trap piping 8c: Downward pipe for drain traps 8d: Top of the drain trap pipe 8e: Downstream end of drain trap pipe 10: Rim spout 14: Jet nozzle 18: Waste receiving surface 20: Rim section 30: Drain socket 32: Drain socket connection part on the toilet side 34: Eccentric flow path of drain socket 34a: Rear wall of the eccentric flow channel 34b: Front wall of the eccentric flow channel 36: Straight flow path section of drain socket 36a: Front wall section of the straight channel 36b: Guide ribs for straight channel sections 36c: Mounting hole for the straight channel section 38: Fixing part of the drain socket 40: Constriction member 40a: Bottom surface of the condensing member 40b: Side portion of the diaphragm member 40c: Opening of the diaphragm 40d: Mounting part for aperture member 40e: Claw portion of the diaphragm member 40f: Rib portion of the drawing member FL: Floor surface S: Gap W:Retained water

Claims

1. A siphon-type flush toilet that discharges waste through a siphon action, A bowl portion comprising a waste receiving surface for receiving waste, and a rim portion formed above the waste receiving surface, The rim portion is provided with a spout for discharging cleaning water into the bowl portion, A drain trap pipe comprising: an upward-extending downward-extending downward-extending upward-extending downward-extending upward-extending downward-extending upward-extending downward-extending downward-extending upward-extending downward-extending downward-extending upward-extending downward-extending A drain socket connects the above drain trap pipe to the drain pipe, A restricting member is attached to the drain socket mentioned above to reduce the cross-sectional area of ​​the flow path through which the cleaning water flows, It has, A flush toilet characterized in that the above-mentioned restricting member is made of a material different from the material of the above-mentioned drain socket and is mechanically fitted and attached to the above-mentioned drain socket.

2. The toilet bowl according to claim 1, wherein the constricting member is made of a chemical-resistant material.

3. The toilet flushing device according to claim 1 or 2, wherein the restricting member is provided with a rib portion for filling the gap between the drain socket and the restricting member.

4. The toilet flushing device according to claim 1, wherein the constricting member or the drain socket is provided with a plurality of guide ribs extending inward, and the plurality of guide ribs are arranged parallel to each other.

5. The flush toilet according to claim 4, wherein the plurality of guide ribs are provided in the collision region of the restrictor member or the drain socket, to which the majority of the flushing water flowing through the restrictor member or the drain socket collides.

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