JP2001146784A - Draining device for flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a draining device for a flush toilet bowl which is free of a positional slippage of a restricting part 24b and can realize early generation of a siphon and a large force of the siphon. SOLUTION: A drain socket 20 of the flush toilet bowl has an inflow port 21a connected to a drain port 16 of the main body 11 of the bowl and an outflow port 24a communicating with a drainpipe P joined to a sewer and has a socket flow passage 23a which connects the inflow port 21a and the outflow port 24a to be eccentric to each other. In the drain socket 20, the restricting part 24b is formed integrally with the socket. By the restricting part 24b, washing water flowing through the socket flow passage 23a is made to stagnate temporarily to realize early generation of the siphon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet drain device provided between a discharge port of a toilet body and a drain pipe connected to a sewer pipe.

[0002]

2. Description of the Related Art Conventionally, as this kind of drainage socket, one described in Japanese Patent Application Laid-Open No. 8-326136 is known. FIG. 21 is a cross-sectional view showing the periphery of a conventional flush toilet drainage device. The outlet 102 of the toilet body 100 of the flush toilet is connected to a drain pipe P provided on the floor surface FL via a drain socket 110. Drainage socket 11
0 is formed in a shape bent in the longitudinal direction of the toilet body 100. The drain socket 110 has a bent socket flow path 112 to generate turbulence to facilitate the generation of siphons.

Further, a throttle portion 116 is provided between the drain socket 110 and the drain pipe P, that is, between the outlet 114 of the socket channel 112 and the upper end of the drain pipe.
The constricted portion 116 extends from the socket flow path 112 to the drain pipe P
The washing water flowing to the tub temporarily stays and acts to promote the generation of siphons.

[0004]

However, the conventional throttle portion 116 is formed separately from the drain socket 110 and only intervenes between the drain opening P and the upper end opening thereof.
There has been a problem that, when receiving a force during drainage, it is likely to be displaced or fall into the drain pipe P. Such misalignment of the diaphragm reduces the action of generating a siphon. Also, the dropping of the constricted part into the drain pipe is
Will be clogged. Further, the work of assembling such a narrowed portion at a predetermined position is troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a drainage socket which is capable of realizing an early generation of a siphon without displacement of a throttle portion, and which is excellent in construction workability. Aim.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The present invention is directed to an inflow port connected to a discharge port of a toilet body, and a flow communicating with a drain pipe connected to a sewer pipe. A flush toilet having a drain socket having an outlet and having a socket flow path for eccentrically connecting the inflow port and the outflow port, wherein the drain device is integrally formed with the drain socket and flows through the socket flow path. It is characterized in that it is provided with a throttle unit for temporarily retaining the washing water to generate a siphon.

In the flush toilet drainage device according to the present invention,
The flush water discharged from the toilet body flows from the inlet of the drain socket to the drain via the outlet through the socket flow path. At this time, since the drain socket is eccentric between the inflow port and the outflow port, the flow of the cleaning water is bent along the eccentric flow path, and the flow of the cleaning water is liable to stay. To induce siphoning.
By combining both the eccentric flow path and the throttle section, such as the throttle section and the eccentric flow path alone and retaining the cleaning water, an excessively bent flow path or an excessively narrow throttle flow path can be obtained. It is not necessary to form it alone, and there is no clogging of waste.

Further, since the throttle portion is formed integrally with the drainage socket, the throttle portion does not shift or fall off even when receiving the power of the washing water at the time of drainage. Can be maintained and maintenance is easy. Further, since the throttle portion is formed integrally with the drain socket, when the drain socket is attached to the front or the rear, it is not necessary to position the drain socket, and the workability is excellent.

Such a diaphragm can take various shapes as a position and a shape suitable for generating a siphon. For example, the throttle portion can be a decentered throttle channel with respect to the socket channel at the position where the throttle portion is provided, and can achieve a synergistic effect with the flow of the eccentric socket channel. Further, by arranging the throttle portion near the outlet, the amount of the washing water staying upstream of the throttle portion can be increased, the siphon power can be increased, and the ability to discharge waste can be improved. .

[0010] In order to increase the amount of retained washing water, the throttle portion further extends the socket flow path below the portion where the drainage socket is fixed to the floor, and a throttle portion is formed at the lower end portion. It is possible to adopt a configuration for disposing.

[0011] Since such a constricted portion is formed integrally with the drain socket, it is not necessary to consider an assembling position or the like at the time of construction work of the flush toilet, and the workability is excellent. Here, the term "integrally configured" means that it does not impair the workability by being integrated during the construction work of the flush toilet, and may be integrally formed with the drainage socket, or may be integrally formed even if formed separately from the drainage socket. Any structure may be used as long as it is assembled and the fixing and the positioning are reliably performed.

In order to improve the action of siphon generation, the drain socket is provided with a toilet-side throttle in the vicinity of the outlet of the flush toilet, and the toilet-side throttle is disposed eccentrically with the inlet. And various other modes.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the present invention will be described below.

FIG. 1 is a sectional view showing a peripheral portion of a flush toilet 10 using a drain socket 20 according to an embodiment of the present invention. The flush toilet 10 is a ceramic toilet body 1 in which a ball portion 11a and a trap drain pipe 11b are integrally formed.
1, a drain socket 20 made of resin, a washing water tank, and the like. The drain socket 20 connects the outlet 16 of the toilet body 11 to a drain pipe P projecting from the floor surface FL.

As shown in FIG. 2, the drain pipe P is formed on the floor surface FL of the toilet room according to four standards in which two types of outer diameters D1, D2 and two types of thicknesses t1, t2 are different from each other. I have. That is, the drain pipe PA has an outer diameter D1 and a thickness t1, the drain pipe PB has an outer diameter D1 and a thickness t2, the drain pipe PC has an outer diameter D2 and a thickness t1, and the drain pipe PD Is
The outer diameter is D2 and the thickness is t2. Here, the outer diameter and the thickness are D1 <D2 and t1 <t2. FIG. 3 is an explanatory diagram illustrating a state in which a drain pipe P is provided on the floor surface FL of the toilet room. In FIG. 3, the drain pipe P (PA) is disposed at a position different from the distances L1 (120 cm) and L2 (200 cm) depending on conditions such as a building, not the same distance from the front wall WF of the toilet room. The drain socket 20 accommodates all four different drain pipes P and all two rough-in dimensions. Hereinafter, the drain socket 20 will be described in detail.

FIG. 4 is an enlarged sectional view of the drain socket 20 of FIG. 1, and FIG. 5 is a sectional view of the drain socket 20 cut in a direction perpendicular to the longitudinal direction of the toilet body 11. 4 and 5, the drainage socket 20 is provided with a toilet connecting portion 21.
The connecting pipe part 23, the drain pipe connecting part 24, the socket fixing part 28 (see FIG. 7), and the toilet fixing part 29 (FIG. 5) are integrally formed of resin.

The toilet connecting portion 21 is provided with the trap drain pipe 1.
1b is provided with a seal member 22 for sealing between the outlet side and the outlet side. The outlet side of the trap drain pipe 11b is inserted into the opening 22a of the sealing member 22 to seal the gap therebetween, and the outlet 1 of the trap drain pipe 11b is sealed.
6 is connected to the inlet 21a.

Further, the toilet connecting section 21 and the connecting pipe section 23
Has a socket channel 23a for connecting the inflow port 21a and the outflow port 24a eccentrically. The eccentric distance La of the connecting pipe portion 23 is formed such that La = (L2−L1) / 2. A step 23b is formed between the connecting tube 23 and the toilet connecting portion 21 and above the connecting tube 23. The socket flow path 23a generates a turbulent flow when the washing water hits the step 23b,
The shape is such that washing water stays.

The drain pipe connecting portion 24 has an outlet cylindrical portion 25 having an outlet 24a, and a first outlet concentric with the outlet 24a.
It has a cylindrical connecting portion 26 and a second cylindrical connecting portion 27. The outflow tube portion 25 is inserted into a drain pipe P connected to a sewer pipe to prevent the wash water from leaking to the outside.

In the middle of the outflow tube portion 25, a throttle portion 24b is formed as a throttle portion. This throttle unit 24
The flow path b is formed so as to have a narrow flow path area concentrically with the socket flow path 23a of the outflow cylinder section 25, and the flow area of the outflow cylinder section 25 is rapidly reduced, thereby generating a siphon. And is formed integrally with the outflow cylinder 25 by injection molding.

FIG. 6 is an enlarged sectional view showing the vicinity of the drain pipe connecting portion 24. In FIG. 6, a first tubular connecting portion 26 and a second tubular connecting portion 27 are tubular bodies for selectively connecting drainage pipes P (see FIG. 2) having different outer diameters D1 and D2. The gap d1 between the outflow tubular portion 25 and the first tubular connecting portion 26 and the gap d2 between the first tubular connecting portion 26 and the second tubular connecting portion 27 are formed to be larger than the thickness t2 of the drain pipe P. The drain pipes P having different thicknesses t1 and t2 can be inserted therebetween. The connection surface of the first cylindrical connection portion 26 or the second cylindrical connection portion 27 is joined by interposing an adhesive between the outer peripheral surface of the drain pipe P and fitting the drain pipe P. is there.

In order to facilitate such a bonding operation,
The following configuration is adopted. That is, the first cylindrical connecting portion 26 is formed to be longer downward than the outflow cylindrical portion 25,
In addition, the second tubular connecting portion 27 is formed to be longer downward than the first tubular connecting portion 26. As a result, the tubular portion located on the inner peripheral side is shorter than the tubular portion located on the outer peripheral side,
When applying the adhesive to the connection surface of the first cylindrical connection portion 26 and the connection surface of the second cylindrical connection portion 27, a bonding work space is secured so that the inner tube does not hinder the bonding operation. Easy going.

FIG. 7 is a side view of the drain socket 20 and FIG. 8 is a bottom view of the drain socket 20. As shown in FIGS. 7 and 8, a socket fixing portion 28 is integrally formed at the bottom of the drain socket 20. The socket fixing portion 28 is a portion for fixing the drain socket 20 to the floor surface FL, and has a socket fixing leg 28d on the outer peripheral side of the second cylindrical connection portion 27, and is substantially horizontally extending from the socket fixing leg 28d. The drain socket 20 is provided with a flat plate portion 28a extending in a rectangular shape and screwed with screws 28c through four screw holes 28b of the flat plate portion 28a.
Fixed to L.

Returning to FIG. 5, on the side of the drain socket 20, toilet fixing portions 29, 29 are formed. The toilet fixing parts 29, 29 are located above the drain socket 20, and
1 and is provided with screw fixing portions 29a, 29a on the upper surface thereof. Screw fixing part 29
a, 29a are formed bilaterally symmetric with respect to the longitudinal direction of the toilet body 11, and bilaterally symmetric with respect to the direction perpendicular to the longitudinal direction. In other words, the screw fixing portions 29a, 29a allow the toilet body 11
Is formed so as to be arranged at the same position as the socket-side fixing portion 11d.

Next, the operation of installing the flush toilet 10 will be described. First, the drain pipe PA shown in FIG.
The operation of installing the toilet body 11 using the drain socket 20 when the toilet body 11 is installed at a distance L1 (120 cm) as shown in FIG.

FIG. 9 is an explanatory view for explaining the operation of installing the drain socket 20. First, the drain pipe P is cut from the floor at a predetermined height (for example, 60 cm). Then, after confirming the front and rear of the drain socket 20, the center line of the drain socket 20 is aligned with the center line of the toilet body 11, and the first tubular connecting portion 26 of the drain socket 20 is inserted into the drain pipe P. Then, as shown in FIG. 10, the drain socket 20 is provisionally positioned. At this time, the drain socket 20 is
Is temporarily arranged so as to face forward. Subsequently, a pilot hole is made in the floor surface FL by using the screw hole 28b of the socket fixing portion 28 (see FIGS. 7 and 8).

Next, the drainage socket 20 is separated from the floor surface FL, and an adhesive is applied to the connection surface of the first cylindrical connecting portion 26 of the drainage socket 20, while the adhesive is also applied to the outer peripheral surface of the drainage pipe P. Is applied. Then, the first cylindrical connecting portion 26 is fitted to the drain pipe P so that the drain socket 20 is returned to the position where the temporary positioning is performed. Thereby, as shown in FIG. 4, the first cylindrical connecting portion 26 is connected to the drain pipe P via the adhesive. In this state, the drainage socket 20 is fixed to the floor surface FL by screwing it to the four screw holes 28b of the socket fixing portion 28.

Subsequently, as shown in FIG. 5, the toilet body 11 is inserted into the inflow port 21a of the toilet connection portion 21 of the drain socket 20.
Of the toilet body 11 with the floor surface F
Installed on L As a result, the outlet 16 is connected to the toilet connecting portion 21.
And is sealed by a seal member 22. Then, screws 29 are attached to the socket side fixing portion 11d and the toilet fixing portions 29, 29 of the toilet body 11.
b, 29b, respectively, to insert the toilet body 1
1 is fixed to the drain socket 20.

Next, as shown in FIG.
An operation of connecting the drain socket 20 when A is disposed at a distance L2 (200 cm) from the front wall WF of the toilet room will be described. This work is performed on drain socket 2
The operation is the same as the above-described operation except that the direction in which 0 is set is different between the front and rear. That is, as shown in FIG. 11, the drain socket 20 is arranged so that the toilet connection portion 21 faces the front wall WF. Thus, even if the position of the drain pipe P is different, the distance from the front wall WF to the inflow port 21a can be changed to (L1 + L) only by changing the position of the drain socket 20.
The toilet body 11 can be installed at the same position represented by 2) / 2.

Therefore, according to the above-described embodiment, even if the drain pipes P are arranged at different positions, the direction in which the drain socket 20 is attached is changed so that the drain sockets 20 are located at the same position in the toilet room. The toilet body 11 can be installed. Therefore, according to the arrangement position of the drain pipe P,
There is no need to use a different drain socket 20.

Next, the operation of installing the toilet body 11 when the outer diameter of the drain pipe P is made different is performed as follows. That is, as shown in FIGS. 2C and 2D, when the drain pipe PC or the drain pipe PD having the outer diameter D2 is used, the second cylindrical connecting portion of the drain socket 20 shown in FIG. The same operation as described above is performed except for the operation of applying an adhesive to the connection surface of No. 27. That is, the drain socket 20 is the same, and the surface to which the adhesive is applied may be changed according to the outer diameter of the drain pipes PC and PD. Further, as shown in FIG. 6, a gap d1 between the outflow tubular portion 25 and the first tubular connecting portion 26 and a gap d2 between the first tubular connecting portion 26 and the second tubular connecting portion 27.
Is larger than the thickness t2 of the drain pipe PB and the drain pipe PD, so that the drain pipe P having a large thickness t2 can be connected by the same drain socket 20.

Therefore, the drain socket 20 can be formed by simply selecting its orientation or the surface on which the adhesive is to be applied.
Other than the above, it is possible to cope with various drainage pipes P shown in FIGS. 2 and 3 having different outer diameters, wall thicknesses, and arrangement positions under the same construction conditions, and is excellent in construction workability.

The drain socket 20 has the following configuration in order to quickly generate a siphon. FIG. 12 is an enlarged sectional view showing the vicinity of the drain socket 20.

The drain socket 20 is provided with a step 23b between the toilet connecting section 21 and the connecting pipe section 23.
When the washing water is applied in b and the flowing direction is changed, a water film is formed, a delay effect of the washing water is obtained, and siphon generation is induced. The step portion 23b is formed by the socket flow path 23a eccentricizing the inflow port 21a and the outflow port 24a.

The outlet 24a of the drain socket 20 is provided with a throttle 24b. The throttle portion 24b increases the delay effect of the washing water near the outlet 24a.
Such a constricted portion 24b can more quickly and reliably generate a siphon due to a synergistic effect with the step portion 23b.

Since the throttle portion 24b is formed integrally with the drain socket 20 by injection molding with a resin,
As described in the prior art, there is no need to assemble to the drain pipe P, and the mounting workability is excellent, and there is no displacement due to the water pressure at the time of drainage to impair the action of generating the siphon.

Further, the above-described embodiment has the following other functions and effects.

(1) Since the drain socket 20 is screwed to the floor surface FL at the socket fixing portion 28, the drain pipe P and the drain socket 20 can be securely joined.

(2) Since the drain pipe P is joined to the first tubular connecting portion 26 or the second tubular connecting portion 27 of the drain socket 20 via an adhesive, the two are securely connected to each other, and Can prevent water leakage.

(3) The toilet body 11 is provided with a toilet fixing portion 29.
Are screwed and fixed at the portion, so that both can be securely fixed, and since the fixed position behind the toilet body 11 is located above the floor surface FL, cleaning can be easily performed. Become.

(4) On the innermost peripheral side of the drain socket 20,
Since the outflow tube portion 25 is provided, all the washing water is surely guided to the drainage pipe P. Therefore, the washing water flows from the connection portion between the drainage tube P and the first tubular connection portion 26 or the second tubular connection portion 27. No water leakage.

FIG. 13 is a sectional view showing a drain socket 20B according to the second embodiment. The drain socket 20B in FIG. 13 includes a toilet connecting portion 21B and an outflow tube portion 25B.
And a connecting pipe portion 23B for connecting the connecting pipe portion 23B with the inclined socket flow path 23Ba. The socket flow path 23Ba has a flow path that flows along the inclined surface 23Bb of the inner wall of the connection pipe 23B. In addition, a narrowed portion 24Bb is formed so as to be continuous with the lower end of the inclined surface 23Bb. The throttle portion 24Bb has a throttle channel 24Bc that is eccentric with respect to the center axis of a certain diameter of the throttle portion 24Bb, and the plane between the throttle channel 24Bc and the lower end of the inclined surface 23Bb is a stagnation surface 24Bd.

According to the drainage socket 20B, the washing water flowing into the toilet connecting portion 21B flows along the inclined surface 23Bb of the connecting pipe portion 23B and is turned in the horizontal direction by the retaining surface 24Bd. It flows out of the flow path 24Bc. Therefore, in the drain socket 20B, the connecting pipe portion 2
3B inclined surface 23Bb and throttle channel 2 of throttle portion 24Bb.
Since the direction of the washing water is changed in the horizontal direction from the positional relationship with 4Bc, it is possible to reliably generate a water film in the vicinity of the throttle portion 24Bb, and to induce a siphon at an early stage.

FIG. 14 is a sectional view showing a drain socket 20C according to the third embodiment. The drainage socket 20C in FIG. 14 is different from the drainage socket 20B in FIG.
That is, while being provided near the outlet 24a,
It is characterized in that the position of the 4Cb throttle channel 24Cc is eccentric to the inclined surface 23Cb side.

That is, the flow path upstream of the throttle portion 24Cb and the lower end of the inclined surface 23Cb is formed to have a height H and a long length. Also, the throttle channel 24 of the throttle section 24Cb
Cc is formed eccentrically so that the washing water flowing along the inclined surface 23Cb hits the retaining surface 24Cd provided on the opposite side to the inclined surface 23Cb. This drain socket 2
According to 0C, the washing water flowing along the inclined surface 23Cb of the drain pipe connection portion 24C is retained by the stagnation surface 24C of the throttle portion 24Cb.
d, the lower end of the inclined surface 23Cb and the narrowed portion 24Cb
And a siphon occurs. By providing the throttle portion 24Cb at an eccentric position as described above, the siphon can be quickly generated according to the washing water flowing along the inclined surface 23Cb. Also, the inclined surface 23C
Since the washing water accumulates in the long flow path (height H) between b and the constricted portion 24Cb, the water level difference between the washing water accumulated on the ball surface of the toilet body and the siphon force can be increased. .

FIG. 15 is a sectional view showing a drain socket 20D according to the fourth embodiment. The drainage socket 20D in FIG. 15 includes an outflow cylinder 25D extending below the socket fixing leg 28Dd.
The configuration is characterized in that a throttle portion 24Db is provided at the lower end of D. Here, FIG. 15 shows a case where a flush toilet is installed in the toilet room on the second floor of the multilayer floor. Drainage socket 20D
Are fixed to the floor surface FL with socket fixing legs 28Dd. Also, the outflow cylinder 25D of the drain socket 20D is 2
The connection is established by extending downward from the floor surface FL of the floor and being inserted into a drain pipe P disposed between the floor FL and the ceiling of the first floor. The drain pipe P is a horizontal branch drain pipe PS that is bent at a substantially right angle.
It is connected to the.

A throttle 24Db is attached to the lower end of the drain socket 20D. FIG. 16 is an enlarged sectional view showing the vicinity of the throttle section 24Db. The aperture 24Db is detachably attached to the lower end of 25D. That is, the throttle unit 24Db includes the throttle plate 24Dd having the throttle channel 24Dc. This diaphragm plate 24D
d, an internal thread 24De is formed on the outer periphery thereof, and the outflow cylindrical portion 2
The screw plate 24Dd is detachably attached to the lower end of the outflow tube portion 25D by being screwed into a male screw 25Da formed at the lower end of the inner periphery of 5D. A mounting knob 24Df for facilitating the mounting operation is formed at the lower end of the outer periphery of the diaphragm plate 24Dd.

Drainage socket 20D according to the present embodiment
According to this, since the lower end of the outflow cylinder portion 25D extends below the floor surface FL and the throttle portion 24Db is provided at the lower end, the water level for generating the siphon is large, and a large siphon force can be obtained. it can. In addition, the throttle unit 24Db
Is formed separately from the drainage socket 20D,
The manufacture of the drain socket 20D itself is also facilitated. Moreover,
The throttle portion 24Db is firmly attached to the outflow tube portion 25D by the male screw 25Da and the female screw 24De, so that the throttle portion 24Db does not drop off or shift and does not affect the siphon generation.

FIG. 17 is a plan view of the diaphragm 24Ea, and FIG. 1 is a plan view of the diaphragm 24Ea.
The configuration shown in FIG. Locking portions 24Ec are protruded from both sides of the throttle plate 24Eb of the throttle portion 24Ea, and the locking portions 24Ec are inserted into recesses 25Ea formed at the lower end of the outflow cylindrical portion 25E, and the lower end of the outflow cylindrical portion 25E is formed. And is held down by a locking arm 25Eb which is rotatably supported. According to this configuration, the throttle portion 24Ea is positioned in the circumferential direction by the positional relationship between the locking portion 24Ec and the recess 25Ea. Therefore, even when the throttle channel is provided eccentrically, the throttle portion 24Ea remains at a predetermined position. It can be securely attached, and a desired siphon generation can be obtained.

FIG. 19 is a sectional view showing the vicinity of a drain socket 20F according to a fifth embodiment, and FIG.
It is explanatory drawing explaining the positional relationship between the trap drain pipe 11Fb and the drain socket 20F. This embodiment is characterized by a configuration in which a throttle portion 16Fa is formed in an outlet 16F of a toilet body 11F and a configuration of a toilet connection portion 21F of a drain socket 20F positioned in a trap drain pipe 11Fb. That is, the squeezing section 16 is located near the outlet 16F.
By providing Fa, the cleaning water can stay at the upstream side of the drainage socket 20F and the siphon can be generated earlier, thereby reducing the amount of cleaning water.

At the lower end of the trap drain pipe 11Fb, a positioning portion 11Fc is formed on the inner peripheral side.
The positioning portion 21Fa of the toilet connection portion 21F of the drain socket 20F is engaged with the positioning portion 11Fc. In this way, by positioning both the toilet body 11F and the drain socket 2 without displacing the position of the throttle section 16Fa.
0F can be connected.

The narrowed portion 16Fa can take various forms such as being formed integrally with the trap drain pipe 11Fb, separately formed, formed into a shelf shape, or eccentric.

The present invention is not limited to the above embodiment, but can be implemented in various modes without departing from the gist of the present invention. For example, the following modifications are possible.

(1) A mounting mark may be provided at a position easily visible from the outside such as the outer wall of the drain socket as a mark indicating the front and rear of the drain socket when assembling the drain socket. Since the drainage socket is securely mounted by the mounting mark, the throttle portion can be accurately mounted to the toilet body.

(2) The outflow cylinder 25 of the toilet connection 21,
The first tubular connecting portion 26 and the second tubular connecting portion 27 may not be coaxial, but may be eccentric to prompt the induction of the siphon, in consideration of factors that do not cause clogging of dirt.

(3) In the above embodiment, the drain pipe P
Has been described for the case of application to PVC pipes, but is not limited to this.
A configuration that can be applied to a lead pipe may be adopted (Japanese Patent Application No. 11-1).
95372).

(4) Outflow cylinder 25 of drain socket 20
Are formed such that the outer wall of the first cylindrical connecting portion 26 and the inner wall of the first cylindrical connecting portion 26 and the inner wall of the second cylindrical connecting portion 27 have a gradient whose diameter increases toward the downstream side. May be. This facilitates the work of fitting with the drain pipe P, and simplifies the die cutting when the drain socket 20 is formed by injection molding.

(5) Outflow cylinder part 25, first cylindrical connection part 2
By forming a notch in a part of 6, the work of applying an adhesive to the connection surfaces of the first tubular connecting portion 26 and the second tubular connecting portion 27 may be facilitated. In this case, if necessary, the lengths of the outflow cylindrical portion 25 and the first cylindrical connecting portion 26 below may be the same.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a peripheral portion of a flush toilet 10 using a drain socket 20 according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing four types of drainage pipes P connected to a drainage socket.

FIG. 3 is an explanatory diagram illustrating a state where a drain pipe P is constructed on a floor surface FL of a toilet room.

FIG. 4 is a sectional view showing the drain socket 20 of FIG.

FIG. 5 is a sectional view of the drain socket 20 cut in a direction perpendicular to the longitudinal direction of the toilet body 11;

FIG. 6 is an enlarged sectional view showing the vicinity of a drain pipe connection part 24;

FIG. 7 is a view of the drain socket 20 viewed from the side.

8 is a bottom view of the drain socket 20. FIG.

FIG. 9 is an explanatory diagram illustrating an operation of installing a drain socket 20.

FIG. 10 is an explanatory view illustrating a construction operation of a flush toilet using a drain socket 20.

FIG. 11 is an explanatory view for explaining a construction operation of a flush toilet using a drain socket for a drain pipe constructed at a position different from that of FIG. 10;

FIG. 12 is an enlarged sectional view showing the vicinity of a drain socket 20;

FIG. 13 shows a drainage socket 20 according to a second embodiment.
It is sectional drawing which shows B.

FIG. 14 is a drain socket 20 according to a third embodiment.
It is sectional drawing which shows C.

FIG. 15 shows a drainage socket 20 according to a fourth embodiment.
It is sectional drawing which shows D.

FIG. 16 is an enlarged cross-sectional view showing the vicinity of a throttle unit 24Db according to a fourth embodiment.

FIG. 17 is an explanatory diagram illustrating the vicinity of a throttle unit 24Ea.

FIG. 18 is a plan view showing a throttle unit 24Ea.

FIG. 19 is a sectional view showing the vicinity of a drain socket 20F according to a fifth embodiment.

FIG. 20 is an explanatory diagram illustrating a positional relationship between a trap drain pipe and a drain socket of the toilet body.

FIG. 21 is a cross-sectional view showing the periphery of a conventional flush toilet drainage device.

[Explanation of symbols]

 Reference Signs List 10 flush toilet 11 toilet body 11a ball part 11b trap drain pipe 11d socket side fixed part 11F toilet body 11Fb trap drain pipe 11Fc positioning part 16 outlet 16F outlet 16Fa throttle 20 Drain socket 20B ... Drain socket 20C ... Drain socket 20D ... Drain socket 20F ... Drain socket 21 ... Toilet connection 21a ... Inlet 21B ... Toilet connection 21F ... Toilet connection 21Fa ... Positioning part 22 ... Sealing member 22a ... Opening 23B ... connecting pipe 23Ba ... socket flow path 23Bb ... slope 23 ... connection pipe 23a ... socket flow 23b ... step 23Cb ... slope 24a ... outlet 24 ... drain pipe connection 24b ... throttle 24Bb ... throttle 24Bc. ... Flow path 24Bd ... Retention surface 24Cb ... Narrowing part 24Cc ... Flow Road 24Cd: Staying surface 24C: Drain pipe connection portion 24Db: Restricted portion 24Dc: Flow path 24Dd: Restricted plate 24De: Female screw 24Df: Mounting knob 24Ea: Restricted portion 24Eb: Restricted plate 24Ec: Locking portion 25B: Outflow cylinder portion 25C: Outflow cylinder 25D: Outflow cylinder 25Da: Male screw 25E: Outflow cylinder 25Ea: Recess 25Eb: Locking arm 25: Outflow cylinder 26: First cylindrical connection 27: Second cylindrical connection 28c ... Screw 28b ... Screw hole 28Dd ... Socket fixing leg 28a ... Flat plate portion 28b ... Screw hole 28 ... Socket fixing portion 28d ... Socket fixing leg 29 ... Toilet fixing portion FL ... Floor surface P ... Drain pipe WF ... Front wall La ... Eccentric distance PS ... Yokota drainage pipe

Continuation of front page (72) Inventor Takayuki Otani 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2D039 CA01 CB02

Claims (7)

[Claims] 1. A socket flow path having an inlet connected to an outlet of a toilet body and an outlet communicating with a drain pipe connected to a sewer pipe, wherein a socket flow path connecting the outlet and the outlet eccentrically is provided. A drain device for a flush toilet provided with a drain socket having: a throttle unit that is integrally formed with the drain socket and temporarily retains washing water flowing through the socket flow path to generate a siphon. Flushing device for flush toilet. 2. A flush toilet according to claim 1, wherein said throttle portion has a throttle channel eccentric with respect to a socket channel at a position where said throttle portion is provided. Drainage equipment. 3. The flush toilet drain device according to claim 1, wherein the throttle portion is arranged near the outlet. 4. The drain device for a flush toilet according to claim 1, wherein the drain socket includes a fixing portion fixed to a floor surface, and the socket flow path is provided below the fixing portion. A drain device for a flush toilet, comprising a flow path having an outlet and inserted into a drain pipe, and a throttle section disposed in the flow path. 5. The drain device for a flush toilet according to claim 1, wherein the throttle portion is formed separately from the drain socket, and the throttle portion is detachably attached to the drain socket. A flush toilet drainage device with a mounting part. 6. The flush toilet drain device according to claim 1, wherein the flush toilet includes a toilet-side restrictor near a discharge port. 7. The drain device for a flush toilet according to claim 6, wherein the toilet-side throttle portion is eccentrically arranged with respect to the inflow port.