JP2010121323A - Drainage socket for flush toilet, and flush toilet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage socket for flush toilet improving the cleaning performance of a flush toilet by accelerating the time when siphon effect occurs in cleaning of a flush toilet body and extending the duration of the siphon effect. <P>SOLUTION: The drainage socket 4 for the flush toilet 1 includes a drainage socket body 6 provided with a vertical conduit 6b including an inflow port 6a connected to the outlet end 2b of the trap channel 2a of a flush toilet body 2 and opened substantially vertically upward, and a horizontal conduit 6d including an outflow port 6c connected to the inlet end D1 of a drainage line D and opened substantially horizontally; a base seat member 8 disposed on a floor surface F and located below the drainage socket body to support the drainage socket body; and an adaptor 10 provided within the horizontal conduit 6d of the drainage socket body and forming a water passage 10a to reduce the flow passage section within the horizontal conduit. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drainage socket of a flush toilet and a flush toilet, and in particular, a drainage socket connecting an inlet end of a drainage pipe provided on a wall surface and an outlet end of a drainage channel of the flush toilet body, and The present invention relates to a flush toilet using this drain socket.

  Conventionally, in the so-called floor drainage flush toilet that connects the inlet end of the drainage pipe provided on the wall surface and the outlet end of the drainage channel (trap conduit) of the flush toilet body, the drainage provided on the wall surface A drainage socket having a drainage connection structure that can cope with a height difference between an inlet end of a pipe and an outlet end of a drainage channel of a flush toilet body has been proposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-256661

However, in the conventional drain socket described above, drain sockets corresponding to various height differences between the inlet end of the drain pipe provided on the wall surface and the outlet end of the drain passage of the flush toilet body must be prepared. However, many types of drainage sockets are required, but if the type of drainage socket adopted changes, the drainage of the drainage channel (trap conduit) of the flush toilet body and the outlet end of the drainage channel drainage channel Since the height difference with the core also changes, the siphon action during the washing of the flush toilet body also changes, which has a problem of affecting the washing performance.
In particular, the smaller the height difference between the drainage channel (trap conduit) of the flush toilet body and the drain core at the outlet end of the drainage socket drainage channel, the stronger the siphon action when washing the flush toilet body ( There is a problem that the cleaning performance of the flush toilet is lowered because the strength of pulling by negative pressure is weakened.

Thus, the height difference between the drainage channel (trap conduit) of the flush toilet body and the drainage core at the outlet end of the drainage channel of the drainage socket greatly affects the strength of the siphon action. How to increase the strength of the siphon action has been a problem that has been requested in the past to improve the washing performance of the flush toilet.
Also, in order to improve the washing performance of flush toilets, in addition to increasing the strength of the siphon action, how to advance the timing of the siphon action, and how to lengthen the duration of the siphon action, This is a problem that has been requested.

  Therefore, the present invention has been made to solve the above-mentioned problems that have been conventionally requested, and can accelerate the timing of occurrence of siphon action during washing of the flush toilet body, and the siphon action. An object of the present invention is to provide a drainage socket for a flush toilet and a flush toilet capable of extending the duration and improving the washing performance of the flush toilet.

  In order to achieve the above object, the present invention provides a drainage socket for a flush toilet that connects an inlet end of a drainage pipe provided on a wall surface and an outlet end of a drainage passage of a flush toilet body. A vertical pipe including an inlet connected to the outlet end of the channel and opening substantially upward in the vertical direction; and an outlet connected to the inlet end of the drainage pipe and opening substantially horizontally. A drain socket main body comprising a horizontal pipe, and a horizontal pipe reduction member that is provided in the horizontal pipe of the drain socket main body and forms a water passage so as to reduce a cross section of the flow path in the horizontal pipe It is characterized by having.

  In the present invention configured as described above, the horizontal pipe reducing member is provided in the horizontal pipe of the drain socket body, and the water flow path is formed so as to reduce the cross section of the flow path in the horizontal pipe. For this reason, when the flush toilet body is washed, the drainage channel of the flush toilet body and the water passage of the horizontal pipe reducing member can be filled more quickly. As a result, the timing at which the siphon action occurs when the flush toilet body is washed can be advanced, the duration of the siphon action can be lengthened, and the washing performance of the flush toilet can be improved.

  In the present invention, preferably, the horizontal pipe reducing member has a center axis of the water passage eccentrically below the central axis of the horizontal pipe, and an upper end of the inlet end of the drainage channel of the flush toilet body. It is comprised so that the distance with the central axis of the said water flow path may become large.

  In the present invention configured as described above, the central axis of the water passage of the horizontal pipe reducing member is eccentric below the central axis of the horizontal pipe, and the upper end of the inlet end of the drainage channel of the flush toilet body Since the distance from the central axis of the water passage becomes larger, it is possible to effectively create a height difference between the drainage passage of the flush toilet body and the water passage of the horizontal pipe reducing member. As a result, a stronger siphon action (pull by a stronger negative pressure) can be generated, and the washing performance of the flush toilet can be improved.

  In the present invention, preferably, the lateral pipe path reducing member is configured such that the diameter of the cross section of the water passage is set to 38 mm to 70 mm.

  In the present invention configured as described above, the timing of occurrence of siphon action during washing of the flush toilet body can be advanced, and the duration of this siphon action can be lengthened, and the washing performance of the flush toilet Can be improved. In addition, it is possible to reliably prevent the timing at which the siphon action occurs due to the diameter of the channel cross section of the water passage of the horizontal pipe path reducing member being too wide or the duration is shortened.

  In the present invention, preferably, a support member disposed on the floor surface and positioned below the drain socket body and supporting the drain socket body, the support member being fixable to the floor surface. The support member includes a base and height adjusting means for adjusting the height of the drain socket main body from the floor surface so as to substantially coincide with the height of the drain pipe from the floor surface.

  In the present invention configured as described above, even if there is a height difference between the inlet end of the drainage pipe provided on the wall surface and the outlet end of the drainage channel of the flush toilet body, Since the height distance can be adjusted and connected, it can be applied to any drainage pipes with different drainage cores provided on the wall surface.

  The present invention is a flush toilet comprising the drain socket.

  In the present invention configured as described above, the timing at which the siphoning action is generated at the time of washing the flush toilet body can be advanced, and the duration of the siphoning action can be lengthened to improve the washing performance. Can be a flush toilet.

  According to the drainage socket of the flush toilet according to the present invention, and the flush toilet, the timing at which the siphon action occurs during washing of the flush toilet body can be advanced, and the duration of the siphon action can be lengthened. The washing performance of the flush toilet can be improved.

Hereinafter, a drain socket and a flush toilet according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, the flush toilet according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall longitudinal sectional view showing the flush toilet of the first embodiment of the present invention, FIG. 2 is an enlarged sectional view of the drain socket of the flush toilet in FIG. 1, and FIG. It is a rear view which shows the drain socket of the flush toilet of 1st Embodiment of this.

As shown in FIG. 1, a flush toilet 1 according to a first embodiment of the present invention includes a ceramic flush toilet body 2, an outlet end 2 b of a trap conduit 2 a that is a drainage channel of the flush toilet body 2, and a wall surface. And a drain socket 4 (details will be described later) for connecting a drain pipe D provided to W.
The flush toilet body 2 includes a wash water tank 2c and a bowl portion 2d to which wash water is supplied from a water supply pipe (not shown) connected to an external water supply source (not shown). That is, the flush toilet 1 is a tank-type flush toilet in which the flush toilet body 2 is provided with the flush water tank 2c.

Further, the flush toilet body 2 is provided with a trap water channel 2a. This trap water channel 2a extends obliquely upward from the inlet end 2e provided at the bottom of the bowl 2d toward the top 2f, and then the top 2f. Extends downward toward the outlet end 2b, and the outlet end 2b opens downward in the vertical direction.
Wash water stored in the wash water tank 2c of the flush toilet body 2 flows into the bowl portion 2d through a predetermined water conduit (not shown), and the wash water in the bowl portion 2d is trap trap water channel 2a. It rises from the inlet end 2e toward the top 2f, passes through the top 2f which is the highest point, and then flows downward from the outlet end 2b.

Next, the configuration of the drain socket 4 used in the flush toilet 1 according to the first embodiment of the present invention will be described in detail with reference to FIGS.
The drain socket 4 is made of a plastic material such as vinyl chloride, and includes a drain socket body 6, a base member 8, and an adapter 10.

The drain socket body 6 is connected to the outlet end 2b of the trap conduit 2a and includes a longitudinal pipe 6b including an inlet 6a that opens upward in a substantially vertical direction, and an inlet of a drain pipe D provided on the wall surface W. A horizontal pipe 6d including an outlet 6c connected to the end D1 and opening in a substantially horizontal direction, and a substantially L-shaped pipe-shaped flow path is formed by the vertical pipe 6b and the horizontal pipe 6d. ing.
Further, packings 6e and 6f are respectively attached to the inlet 6a of the vertical pipe 6b and the outlet 6c of the horizontal pipe 6d of the drain socket body 6.
Further, the drain socket body 6 includes a columnar member 6g extending vertically downward from the lower portion thereof, and a male screw portion 6h is formed in the vertical direction on the outer peripheral surface of the columnar member 6g.

The pedestal member 8 is a support member that is disposed on the floor surface F and is positioned below the drain socket body 6 and is connected to the drain socket body 6 so that the height thereof can be adjusted. The base 8a and the center of the base 8a And a nesting portion 8c that is screwed up and down with respect to the bulging portion 8b. A female screw portion 8d is formed on the inner peripheral portion of the nesting portion 8c, and the male screw portion 6h of the columnar member 6g of the drain socket body 6 is screwed together.
The base 8a is fixed to the floor surface F by bolts 8e, and the male screw portion 6h of the columnar member 6g of the drain socket body 6 is screwed to the female screw portion 8d of the nesting portion 8c of the base member 8, The drain socket body 6 and the pedestal member 8 are connected so that the height can be adjusted, and the drain socket body 6 is fixed to the floor surface F via the pedestal member 8.

In addition, each of the columnar member 6 g and the pedestal member 8 of the drain socket body 6 also functions as a height adjustment member that adjusts the height of the drain socket body 6 from the floor surface F. That is, the raised portion 8b of the pedestal member 8 and the nest portion 8c screwed to the ridge member 8 adjust the relative height of the nest portion 8c with respect to the raised portion 8b by changing the ratio of screwing to each other. In the male threaded portion 6h of the columnar member 6g of the socket body 6 and the female threaded portion 8d of the nesting portion 8c of the base member 8, the drain socket body 6 is rotated around the central axis 6i of the columnar member 6g so as to be mutually threaded. It functions as a height adjusting means for adjusting the height from the floor surface F of the drain socket body 6 by changing the ratio of screwing together.
Incidentally, in FIGS. 1 to 3, the nesting portion 8 c of the pedestal member 8 is completely screwed into the raised portion 8 b, and the male screw portion 6 h of the columnar member 6 g of the drain socket body 6 is female of the nesting portion 8 c of the pedestal member 8. The screw part 8d is completely screwed in, and the state where the height from the floor surface F of the drain socket body 6 is adjusted so as to substantially coincide with the height from the floor surface F of the drain pipe D is shown.

In addition, in the drainage socket of the flush toilet of this embodiment mentioned above, the ratio which the protrusion part 8b of the base member 8 and the nest | insert part 8c screwed to this change mutually, or the columnar member of the drainage socket main body 6 is changed. The height of the drain socket body 6 from the floor surface F is adjusted by changing the ratio of the 6 g male screw portion 6 h and the female screw portion 8 d of the nesting portion 8 c of the base member 8 to be screwed together. Although the embodiment has been described, the present invention is not limited to such an embodiment, and other embodiments can be applied.
For example, an L-shaped bracket including a plate member formed with a longitudinally extending elongated hole is fixed to the floor surface, and a bolt member protruding from the drain socket body is passed through the elongated hole of the plate member of the L-shaped bracket. Thereafter, the height of the drain socket body from the floor surface may be adjusted by fastening with a nut and attaching the drain socket body to the L-shaped bracket so as to be slidable in the vertical direction. In short, the present invention can be applied to all forms provided with means for adjusting the height of the drain socket body from the floor surface.

In the drain socket main body 6, as described above, a generally L-shaped pipe-shaped flow path is formed from the vertical pipe 6b to the horizontal pipe 6d. A water reservoir 6k is formed at the bottom of the portion where the vertical pipe 6b is switched to the flow path of the horizontal pipe 6d, that is, the bottom of the vertical pipe 6b or the inlet 6j of the horizontal pipe 6d. Yes. The water reservoir 6k is formed so as to protrude in a spherical shape substantially downward, and the center O of the spherical surface is slightly decentered from the drain core 6l of the vertical pipe 6b, and the vertical pipe in the drain socket body 6 is provided. In order to make it easy for filth to pass through the flow passage at the portion where the 6b is switched to the horizontal pipe 6d, the flow passage is partially enlarged.
Further, in the water reservoir 6k before the flush toilet body 2 is washed, as shown by a broken line L in FIG. 2, water is accumulated up to the vicinity of the water level L of the shape portion protruding downward in a spherical shape. Yes. Therefore, an apparent passage (passage in which air stays) from the vertical pipe 6b to the horizontal pipe 6d in the drain socket body 6 before the flush toilet body 2 is washed is a water level L in the water reservoir 6k. Since the amount of water is reduced to the extent that water has accumulated, when the flush toilet body 2 is washed, the flow path in the drain socket body 6 tends to become full, and siphon action occurs early. . When the siphon action occurs, the flow path from the vertical pipe 6b to the horizontal pipe 6d in the drain socket body 6 is widened by the water reservoir 6k, so that the filth can freely change its direction at the water reservoir 6k. It can be passed without clogging.

The adapter 10 is a member formed of a plastic material such as vinyl chloride, similar to the drain socket 4, and the drain socket main body 6 is configured so as to partially block the flow path in the horizontal pipe 6 d of the drain socket body 6. The outlet 6c of the horizontal pipe 6d is fitted and fixed inside the horizontal pipe 6d.
Further, the adapter 10 includes an inlet 6j of the horizontal pipe 6d that is bent and switched from a flow path in the vertical pipe 6b of the drain socket body 6 to a flow path in the horizontal pipe 6d. A water passage 10a extending to the outflow port 6c is formed.

Furthermore, the flow path 10a of the adapter 10 has a substantially circular cross section, and the size (diameter d1) of the flow path cross section of the flow path 10a is the flow rate at the inlet end D1 of the drainage pipe D. It is smaller than the size of the road cross section (diameter d2) and the size of the horizontal cross section of the horizontal pipe 6d of the drain socket body 6 (diameter d3).
Therefore, the size of the cross section of the horizontal pipe 6d of the drain socket body 6 is smaller than the size of the horizontal cross section (diameter d3) in the horizontal pipe 6d, and is substantially the size of the water flow path 10a of the adapter 10. The adapter 10 is a horizontal pipe that reduces the size of the horizontal cross section of the horizontal pipe path 6d of the drain socket body 6 to the size of the flow path cross section of the water path 10a (diameter d1). It functions as a road reduction member.

Further, the central axis (so-called “drainage core”) A1 of the flow passage section of the water passage 10a of the adapter 10 is eccentric below the central axis (and the drainage core of the drainage pipe D) A2 of the horizontal pipeline 6d. Regarding the distance h1 (see FIG. 1) between the upper end 2g of the inlet end 2e of the trap water conduit 2a of the flush toilet body 2 and the central axis A1 of the water passage, the inlet end 2e of the trap water channel 2a of the flush toilet body 2 is shown. Is set to be larger than a distance h2 (see FIG. 1) between the upper end 2g of the horizontal pipe 6d and the central axis (and drainage core of the drainage pipe D) A2 of the horizontal pipe 6d.
Incidentally, about the diameter d1 of the flow-path cross section of the water flow path 10a of the adapter 10, the drainage performance in the water flow outlet 10b from the inside of the water flow path 10a is not impaired, and the siphon effect | action at the time of washing | cleaning of the flush toilet body 2 generate | occur | produces In order to speed up the siphon action and to increase the duration of the siphon action, it is preferably set to 38 mm to 70 mm, and most preferably set to 38 mm to 60 mm.

  In addition, about the drain socket main body 6, the base member 8, and the adapter 10 which comprise the drain socket 4 of the flush toilet of this embodiment mentioned above, although the thing made from the plastic material is demonstrated, like this It is not limited to what is made with a material, for example, what is made with a metal, earthenware, etc. may be used.

Next, a flush toilet and a method for installing the drain socket according to the first embodiment of the present invention will be described.
First, the drain socket 4 is disposed on the floor surface F near the drain pipe D.
Next, the drain socket body 6 is rotated around the central axis 6i of the columnar member 6g, and the raised portion 8b of the base member 8 is aligned until the horizontal pipe 6d of the drain socket body 6 and the height of the drain pipe D are aligned. And the screwing between the nesting part 8c and the screwing between the male screw part 6h of the columnar member 6g of the drain socket body 6 and the female screw part 8d of the nesting part 8c of the base member 8 are adjusted.

After adjusting the height of the drain socket body 6, the outlet 6 c of the horizontal pipe 6 d of the drain socket body 6 is inserted into the drain pipe D. Water tightness and air tightness between the outlet 6c of the horizontal pipe 6d of the drain socket body 6 and the drain pipe D are ensured by the packing 6f.
Next, the base 8a of the base member 8 is fixed to the floor surface F with the bolts 8e. Then, the flush toilet body 2 is arranged such that the outlet end 2b of the trap water conduit 2a of the flush toilet body 2 is inserted into the inlet 6a of the vertical pipe 6b of the drain socket body 6. At this time, a force directed vertically downward acts on the drain socket body 6, but since the drain socket body 6 is supported from below by the base member 8, the position of the drain socket body 6 does not change.
Further, the packing 6e ensures the watertightness and airtightness between the inlet 6a of the vertical pipe 6b of the drain socket body 6 and the outlet end 2b of the trap water conduit 2a of the flush toilet body 2. Finally, the flush toilet body 2 is fixed to the floor F with bolts (not shown) and the installation of the flush toilet is completed.

Next, the operation (action) of the flush toilet and its drain socket according to the first embodiment of the present invention will be described.
When washing the flush toilet 1, flush water from the flush water tank 2 c of the flush toilet body 2 is supplied into the bowl portion 2 d, and inside the trap water conduit 2 a of the flush toilet body 2 and the water passage 10 a of the adapter 10 of the drain socket 4. When the inside is full, a siphon action occurs from the bowl part 2d to the water passage 10a, and negative pressure sucks dirt in the bowl part 2d from the inlet end 2e of the trap conduit 2a to the outlet end 2b through the top 2f. Occurs.
Further, the waste water containing the filth discharged from the outlet end 2b of the trap conduit 2a flows into the drain socket body 6 from the inlet 6a of the vertical pipe 6b of the drain socket body 6 of the drain socket 4, and the adapter 10 The water flow channel 10a flows out from the water flow channel outlet 10b through the inlet end D1 of the drainage pipe D into the drainage pipe D.
After the siphoning action is continued for a predetermined time, the siphoning action is weakened as the drainage in the trap conduit 2a is reduced. Finally, the siphoning action is finished and the flushing toilet 1 is completely cleaned.

  Further, in the drain socket 4 of the flush toilet 1 of the present embodiment, the central axis (so-called “drain core”) A1 of the cross section of the water passage 10a of the adapter 10 is the central axis (and drain pipe D) of the horizontal pipe 6d. The distance h1 between the upper end 2g of the inlet end 2e of the trap conduit 2a of the flush toilet body 2 and the central axis A1 of the water passage is the trap conduit of the flush toilet body 2 Since it is set larger than the distance h2 (see FIG. 1) between the upper end 2g of the inlet end 2e of 2a and the central axis (and drainage core of the drainage pipe D) A2 of the horizontal pipe 6d, this distance h1 The height difference between the upper end 2g of the inlet end 2e of the trap water conduit 2a and the water passage 10a of the adapter 10 of the drain socket 4 can be ensured, and the flush toilet body 2 is more than the drain socket without the adapter 10. Washing Strong negative pressure due to siphon action can produce state-prone in the trap water conduit 2a in.

FIG. 4 shows experimental results comparing the occurrence of negative pressure due to siphon action in the trap water conduit of the flush toilet body when the adapter is used and when the adapter is not used in the drainage socket of the flush toilet of this embodiment. It is a graph to show.
Here, the vertical axis of the graph shown in FIG. 4 indicates the pressure near the top in the trap conduit in a series of cleaning steps from the start of cleaning of the flush toilet body to the completion, and the horizontal axis of the graph Indicates time.
In addition, points P1 and Q1 in the graph of FIG. 4 are points where the magnitude of the negative pressure near the top in the trap conduit is maximum in each case where the adapter is used and when the adapter is not used. Each is shown.
Furthermore, points P2 and Q2 in the graph of FIG. 4 indicate points where the siphon action is completed and the negative pressure becomes substantially constant after that in each case where the adapter is used and when the adapter is not used. Yes.

As shown in FIG. 4, the time from when the flush toilet body starts to reach point P1 is shorter than the time until point Q1 is reached. As a result, it was confirmed that when the adapter was used, the time until the negative pressure due to siphoning reached the maximum was earlier than when the adapter was not used. That is, it was confirmed that when the adapter is used, the timing until the siphon action occurs can be advanced by the amount of time until the negative pressure due to the siphon action reaches the maximum.
If the time from point P1 to point P2 is T (P2-P1) and the time from point Q1 to point Q2 is T (Q2-Q1), time T (P2-P1) and T (Q2-Q1) ) Is the duration of the siphon action from when the negative pressure due to the siphon action reaches the maximum when the adapter is used and when the adapter is not used until the siphon action ends (hereinafter referred to as “siphon duration”). It corresponds to. As shown in FIG. 4, when comparing the siphon durations T (P2-P1) and T (Q2-Q1), the siphon duration T (P2-P1) is larger than the siphon duration T (Q2-Q1). It has become. As a result, it was confirmed that the siphon action was maintained longer when the adapter was used than when the adapter was not used.

According to the flush toilet of the first embodiment of the present invention described above, the adapter 10 is provided in the horizontal duct 6d of the drain socket body 6, so that at least the upper part of the cross section of the flow path in the horizontal duct 6d is reduced. Since the water passage 10a is formed in the horizontal passage 6a, the horizontal pipe 6d of the drain socket body 6 is reduced to the size of the flow passage cross section of the water passage 10a by the adapter 10 as compared with the drain socket without the adapter 10. Accordingly, the inside of the trap water conduit 2a of the flush toilet body 2 and the water passage 10a of the adapter 10 can be filled more quickly when the flush toilet body 2 is washed. Therefore, in order to quickly create a state in which the negative pressure due to the siphon action is likely to be generated in the trap water conduit 2a when the flush toilet body 2 is washed, the timing at which the siphon action occurs when washing the flush toilet body 2 can be advanced. In addition, the duration of the siphon action can be increased.
In addition, the central axis (so-called “drainage core”) A1 of the cross section of the water passage 10a of the adapter 10 is eccentric below the central axis (and the drainage core of the drainage pipe D) A2 of the horizontal pipe 6d. The distance h1 between the upper end 2g of the inlet end 2e of the trap water conduit 2a of the toilet body 2 and the central axis A1 of the water passage is equal to the upper end 2g of the inlet end 2e of the trap water conduit 2a of the flush toilet main body 2 and the horizontal pipe 6d. Is set larger than the distance h2 (see FIG. 1) with respect to the central axis (and the drainage core of the drainage pipe D) A2, and the upper end 2g of the inlet end 2e of the trap conduit 2a and the drainage are determined by this distance h1. The height difference between the socket 4 and the water passage 10a of the adapter 10 can be created effectively, and a stronger siphon action (pull by a stronger negative pressure) can be provided.
As a result, the washing performance of the flush toilet 1 can be improved.

Next, with reference to FIG. 5 and FIG. 6, a drain socket in the flush toilet of the second embodiment of the present invention will be described.
FIG. 5 is an enlarged sectional view showing a drain socket in the flush toilet of the second embodiment of the present invention, and FIG. 6 is a rear view showing the drain socket in the flush toilet of the second embodiment of the present invention. Here, in FIG.5 and FIG.6, the same code | symbol is attached | subjected about the part same as the drain socket in the flush toilet of 1st Embodiment, and those description is abbreviate | omitted.

As shown in FIGS. 5 and 6, in the drainage socket 20 in the flush toilet of the second embodiment of the present invention, the adapter 22 is fitted into the horizontal duct 6 d of the drainage socket body 6 so as to partially block the channel. The drainage socket 4 of the first embodiment is common to the first embodiment in that it has the same water passage as the water passage 10a of the adapter 10 in the drain socket 4 of the first embodiment.
However, in the adapter 22 of the drain socket 20 of the present embodiment, a vent hole 22a extending substantially parallel to the axial direction is formed adjacent to the upper portion of the water passage 10a of the drain socket body 6, and the vent hole 22a. By this, the air collected in the vicinity of the inlet 6j of the horizontal pipe 6d of the drain socket body 6 or the outlet end 2b of the trap conduit 2a can be released to the inlet D1 of the drain pipe D. It differs from that of the first embodiment.

  According to the drainage socket 20 in the flush toilet of the second embodiment of the present invention described above, the air accumulated in the vicinity of the inlet 6j of the horizontal pipe 6d of the drainage socket body 6 or the outlet end 2b of the trap conduit 2a is the adapter 22. Therefore, the air in the drain socket body 6 can be smoothly discharged to the drain pipe D. In addition to this, the cross section of the horizontal pipe 6d of the drain socket main body 6 is reduced to the size of the cross section of the water passage 10a by the adapter 22, so that the drain socket main body 6 is filled with water faster. As a result, the siphon action can be generated more quickly.

Below, with reference to FIGS. 7-11, the drain socket in the flush toilet of 3rd Embodiment of this invention is demonstrated.
FIG. 7 is an enlarged sectional view showing a drain socket in the flush toilet of the third embodiment of the present invention, and FIG. 8 is a rear view showing the drain socket in the flush toilet of the third embodiment of the present invention. FIG. 9 is a perspective view of the drain socket adapter in the flush toilet of the third embodiment of the present invention as seen obliquely from above, and FIG. 10 shows the drain socket adapter in the flush toilet of the third embodiment of the present invention. It is the perspective view seen from diagonally downward. Here, in FIGS. 7-10, the same code | symbol is attached | subjected about the part same as the drain socket in the flush toilet of 1st Embodiment, and those description is abbreviate | omitted.

As shown in FIGS. 7 to 10, in the drainage socket 30 in the flush toilet of the third embodiment of the present invention, the drainage is performed so that the adapter 32 partially blocks the flow path in the horizontal pipe 6 d of the drainage socket body 6. The adapter 32 is fitted and fixed to the horizontal pipe 6d of the socket body 6, and a water passage 32a extending from the inlet 6j of the horizontal pipe 6d to the outlet 6c of the horizontal pipe 6d is formed inside the adapter 32. This is common with the first embodiment.
However, in the adapter 32 of the drain socket 30 of the present embodiment, a concave groove 32c extending in a spiral shape with respect to the axial direction is formed on a part of the inner wall surface 32b of the adapter 32 forming the water passage 32a. This is different from the first embodiment.
Further, in the inner wall surface 32b of the adapter 32 forming the water passage 32a, a portion facing the concave groove 32c is partly cut off, and the adapter 32 is fitted and fixed to the horizontal duct 6d of the drain socket body 6. In the state, the spiral groove 32d is formed together with the concave groove 32c.

  In addition, in the drainage socket 30 in the flush toilet of the third embodiment of the present invention described above, the shape and number of the grooves and the like of the spiral concave grooves 32c and the grooves 32d formed in the adapter 32 are particularly limited. Instead, various forms of grooves are applicable. Further, instead of the spiral concave groove 32c or the groove 32d, a spiral projection or the like may be provided on the inner wall surface 32b of the adapter 32.

  According to the drainage socket 30 in the flush toilet of the third embodiment of the present invention described above, the sewage in the water passage 32a flows along the spiral grooves 32c and 32d formed on the inner wall surface 32b of the adapter 32. Thus, the sewage can be discharged to the inlet end D1 of the drainage pipe D while entraining air in the water passage 32a or in the vicinity of the periphery of the water passage 32a. Therefore, the air in the drain socket body 6 can be smoothly discharged to the drain pipe D. In addition to this, the cross section of the horizontal pipe 6d of the drain socket main body 6 is reduced to the size of the cross section of the water passage 10a by the adapter 22, so that the drain socket main body 6 is filled with water faster. As a result, the siphon action can be generated more quickly.

Next, FIG. 11 shows experimental results comparing the occurrence of negative pressure due to siphon action in the trap water conduit of the flush toilet body using the drain sockets from the first embodiment to the third embodiment described above. It is a graph to show.
Here, the vertical axis of the graph shown in FIG. 11 indicates the pressure near the top in the trap conduit in a series of cleaning steps from the start of cleaning of the flush toilet body to the completion, and the horizontal axis of the graph Indicates time.
Further, the points P1, Q1, R1, and S1 in the graph of FIG. 11 are obtained when the adapter of the first embodiment is used, when the adapter is not used, when the adapter of the second embodiment is used, and in the third embodiment. In each case where the adapter is used, the points where the magnitude of the negative pressure in the vicinity of the top portion in the trap water conduit becomes maximum are shown.
Furthermore, the points P2, Q2, R2, and S2 in the graph of FIG. 11 are obtained when the adapter of the first embodiment is used, when the adapter is not used, when the adapter of the second embodiment is used, and in the third embodiment. In each case where the adapter is used, the point at which the siphon action is completed and the negative pressure becomes substantially constant thereafter is shown.

As shown in FIG. 11, the time until the negative pressure due to the siphon action becomes maximum is S1, R1, P1, Q1 in the order of short time, and the case where the adapter is used is more than the case where the adapter is not used. It can be confirmed that the timing of occurrence of the siphon action is accelerated, and in particular, when the adapter is used, it can be confirmed that the siphon action is accelerated in the order of the third embodiment, the second embodiment, and the first embodiment. It was.
In addition, the siphon duration is longer when the adapter is used than when the adapter is not used. In particular, when the adapter is used, T (S2-S1) in descending order of the siphon duration. , T (R2-R1), T (P2-P1), and it was confirmed that the siphon action was sustained for a long time in the order of the third embodiment, the second embodiment, and the first embodiment.

As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the above-described embodiment, the case where the flush toilet body is a toilet bowl integrated with a water supply tank has been described, but the flush toilet body includes a water tank tightly-coupled type, a water supply direct connection type, a water supply tank and a water supply tank direct connection hybrid type, etc. Can be used for any type of toilet bowl.
In addition, with regard to the adapter used for the drainage socket of the flush toilet of the above-described embodiment, the flow rate and drainage performance of the flush water used for washing the flush toilet body, or the size of the drain pipe and the size of the drain core It is possible to select appropriately according to the height and attach to the horizontal pipe line of the drain socket body.
Furthermore, about the adapter used for the drainage socket of the flush toilet of embodiment mentioned above, you may mount | wear and use also the drainage socket main body which is not equipped with the height adjustment means from a floor surface.

It is a whole longitudinal cross-sectional view which shows the flush toilet bowl of 1st Embodiment of this invention. It is an expanded sectional view showing the drain socket of the flush toilet of the 1st embodiment of the present invention. It is a rear view which shows the drain socket of the flush toilet of 1st Embodiment of this invention. In the drainage socket of the flush toilet of the first embodiment of the present invention, the experimental results comparing the occurrence of negative pressure due to the siphon action in the trap conduit of the flush toilet body when the adapter is used and when the adapter is not used. It is a graph to show. It is an expanded sectional view which shows the drain socket in the flush toilet of 2nd Embodiment of this invention. It is a rear view which shows the drain socket in the flush toilet of 2nd Embodiment of this invention. It is an expanded sectional view which shows the drain socket in the flush toilet of 3rd Embodiment of this invention. It is a rear view which shows the drain socket in the flush toilet of 3rd Embodiment of this invention. It is the perspective view which looked at the adapter of the drain socket in the flush toilet of 3rd Embodiment of this invention from diagonally upward. It is the perspective view which looked at the adapter of the drain socket in the flush toilet of 3rd Embodiment of this invention from diagonally downward. It is a graph which shows the experimental result which each compared the generation | occurrence | production state of the negative pressure by the siphon action in the trap water conduit of the flush toilet body using the drain socket from 1st Embodiment of this invention to 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flush toilet 2 Flush toilet body 2a Trap conduit 2b Trap outlet exit 2c Wash water tank 2d Bowl 2e Trap conduit inlet 2f Trap conduit top 2g Trap conduit inlet top 4, 20, 30 Drainage socket 6 Drainage socket body 6a Drainage socket body vertical pipe inlet 6b Drainage socket body vertical pipe 6c Drainage socket body horizontal pipe outlet 6d Drainage socket body horizontal pipe 6e , 6f Packing 6g Columnar member 6h Male thread portion 6i Center axis of columnar member of drainage socket body 6j Inlet portion 6k Reservoir portion 6l Drain core of vertical pipe 8 Base member 8a Base 8b Raised portion 8c Nested portion 8d Female threaded portion 8e Bolt 10, 22, 32 Adapter 10a, 32a Water passage 10b Water passage outlet 22a Vent hole 32b Adder Central axis A2 horizontal line central axis of the water passage of the inner wall surface 32c groove 32d grooves A1 adapter data (drainage wick drainage pipe)
D Drainage pipe D1 Drainage pipe inlet end d1 Diameter of the cross-section of the conduit of the adapter d2 Diameter of cross-section of the drainage pipe d3 Diameter of the cross-section of the horizontal pipe F F Floor h1 Inlet end of the trap conduit The distance between the upper end of the inlet and the center axis of the water passage of the adapter h2 The distance between the upper end of the inlet end of the trap conduit and the central axis of the horizontal pipe (and the drain core of the drain pipe) L Water level of the water reservoir O Water reservoir The center of the spherical surface W

Claims (5)

A drainage socket of a flush toilet that connects an inlet end of a drainage pipe provided on a wall surface and an outlet end of a drainage channel of a flush toilet body,
A vertical pipe including an inlet connected to the outlet end of the drainage channel and opening substantially upward in the vertical direction, and an outlet connected to the inlet end of the drainage pipe and opening substantially horizontally. A drain socket body comprising:
A horizontal pipe reducing member that is provided in the horizontal pipe of the drain socket body and that forms a water passage so as to reduce the cross section of the flow path in the horizontal pipe;
A drainage socket for a flush toilet, characterized by comprising:   The horizontal pipe reducing member has a central axis of the water passage that is eccentric below the central axis of the horizontal pipe, and an upper end of the inlet end of the drainage channel of the flush toilet body and a central axis of the water passage. The drainage socket of the flush toilet according to claim 1, wherein the distance is increased.   The drainage socket of the flush toilet according to claim 1 or 2, wherein the horizontal pipe path reducing member is configured so that a diameter of a cross section of the water passage is set to 38 mm to 70 mm.   Furthermore, the support member is disposed on the floor and is positioned below the drain socket body and supports the drain socket body, the support member being fixed to the floor, and the drain socket body. 4. The apparatus according to claim 1, further comprising: a height adjusting unit that adjusts the height of the drainage pipe from the floor surface so as to substantially coincide with the height of the drainage pipe from the floor surface. Drainage socket for flush toilet as described.   A flush toilet comprising the drainage socket of the flush toilet according to any one of claims 1 to 4.

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