JP2003253737A - Drain socket for water closet stool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage system for a water closet stool, by which the discharging performance of suspended dirt in flushing water stored in a bowl section is improved and which has a drain socket having high general-purpose properties. <P>SOLUTION: In the drain socket for the water closet stool with a drain socket body with an inserting pipe having an inflow port connected to a discharge opening for a stool body and an outlet communicating with a drain pipe connected to a sewer, a flow-path sectional area at the lower end of the inserting pipe is made smaller than that of the outlet for the stool body, and the inserting pipe is longer than a diameter at a place having the largest flow- path sectional area. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device (drainage socket) of a flush toilet 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, various types of drainage devices of this kind have been developed. Most of them connect the outlet of the toilet body of the flush toilet to the drain pipe installed on the floor, that is, to the inlet and drain pipe connected to the outlet of the toilet body. It is provided with a connecting pipe body for connecting to the outflow port. The connection pipe body is fitted into the drain pipe and is connected to the drain pipe with an adhesive or a seal member interposed.

[0003]

However, the conventional drainage socket has a limit in the performance of discharging the floating filth floating in the cleaning water stored in the ball portion, and the cleaning water retained in the ball portion after cleaning is limited. Often remains in water.

The present invention has been made in order to solve the above-mentioned problems, and improves the discharge performance of floating dirt floating in the cleaning water stored in the ball portion and has a versatile drain socket. It is an object to provide a drainage device for a toilet bowl.

[0005]

In order to achieve the above-mentioned object, the invention of claim 1 of the present invention provides an insertion pipe having an inflow port connected to a discharge port of a toilet body, and a drain pipe connected to a sewer pipe. In a drainage socket of a flush toilet having a drainage socket body having an outlet communicating with, the flow passage cross-sectional area of the lower end of the insertion tube is smaller than the flow passage cross-sectional area of the discharge outlet of the toilet body, Is characterized in that the insertion tube is longer than the diameter of the large part of.

In the drainage socket of the flush toilet according to the present invention, the flush water discharged from the toilet body is flowed from the inlet of the drainage socket through the outlet to the drain pipe. At this time, the flow passage cross-sectional area of the lower end of the insertion pipe is smaller than the flow passage cross-sectional area of the outlet of the toilet body, and the insertion pipe is longer than the diameter of the portion near the lower end of the insertion pipe having the largest flow passage cross-sectional area. This causes resistance in the pipe. As a result, the flush water flowing at the time of flushing the flush toilet flows in the insertion pipe almost at a full flow, so that it is possible to delay the entrainment of air in the drain socket to cause the siphon break. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning.

The invention of claim 2 is characterized in that the lower end of the insertion tube has an orifice shape.

According to the present invention, since the lowermost end of the insertion tube has an orifice structure having a cross-sectional area smaller than the cross-sectional area of the flow passage on the upstream side, a step can be formed to cause resistance in the tube. As a result, the flush water that has flowed during flushing of the flush toilet collides with the step and tends to flow in the central axis direction of the insertion tube. By this action, the flow velocity of washing water at the end of the insertion pipe in the drain socket is increased, and it is possible to delay the occurrence of siphon breakage due to air entrapment. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning.

According to a third aspect of the present invention, the insertion tube has a gradually decreasing cross-sectional area toward the downstream side.

According to the present invention, since the insertion tube has a gradually decreasing cross-sectional area toward the downstream side, resistance in the tube occurs. As a result, the washing water that has flowed during the flushing of the flush toilet tries to flow in the central axis direction of the insertion tube. By this action, the flow velocity of washing water at the end of the insertion pipe in the drain socket is increased, and it is possible to delay the occurrence of siphon breakage due to air entrapment. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning. Furthermore, since the cross-sectional area is gently reduced, there is no step or the like that may cause dirt, toilet paper, or the like to be caught during cleaning, so clogging can be prevented.

According to a fourth aspect of the present invention, in a drainage socket of a flush toilet having an inlet connected to the outlet of the toilet body and an outlet communicating with a drain pipe connected to the sewer pipe, the drain socket is provided inside the drain socket. The narrowed flow passage of the narrowed flow passage is smaller than the flow passage cross-sectional area of the outlet of the toilet body, and the narrowed portion is larger than the diameter of the largest flow passage cross-sectional area of the narrowed portion. Is characterized by a long flow path.

In the drainage socket of the flush toilet according to the present invention, the flush water discharged from the toilet body is made to flow into the drainage pipe from the inlet of the drainage socket through the outlet. At this time, the flow passage cross-sectional area of the throttle portion integrally molded with the drain socket is smaller than the flow passage cross-sectional area of the outlet of the toilet body, and the throttle portion is larger than the diameter of the portion where the flow passage cross-sectional area of the throttle portion is the largest. Due to the long flow path, the resistance in the tube becomes.
As a result, the flush water flowing at the time of flushing the flush toilet flushes the throttle portion almost at full flow, so that the flow velocity is increased, and it is possible to delay the occurrence of siphon breakage due to air entrapment from the toilet outlet. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning.
In addition, the number of parts can be reduced and the cost can be reduced by integrally molding the inflow port / throttle part and the drain socket.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below in order to further clarify the constitution and operation of the present invention described above.

FIG. 1 is a sectional view showing a peripheral portion of a flush toilet 1 using a drain socket 4 according to an embodiment of the present invention. The flush toilet 1 is provided with a bowl main body 1a made of pottery in which a ball portion 2 and a trap drain pipe 3 are integrally formed, a drain socket 4 made of resin, a flush water tank, and the like. The drainage socket 4 is connected to the drainage pipe P in which the outlet 5 of the toilet body 1a is embedded in the floor surface FL.

FIG. 2 is a sectional view showing the drain socket 4. The drainage socket 4 is connected to the drainage port 5 of the toilet body 1 a, and has an insertion pipe 7 that conveys cleaning water to the drainage socket body 8.
The drain socket body 8 is molded of resin.

The insertion pipe 7 is provided with a seal member 9 on its upper portion for sealing the gap with the trap drain pipe outlet 6.
By inserting the outlet side of the trap drain pipe 6 into the opening 9a of the seal member 9, the gap between them is sealed and the outlet 5 of the trap drain pipe 6 is connected to the inflow port 10.

The insertion tube 7 is connected to the drain socket body 8 by a seal member 9b which is easily movable.

The drain socket 4 has an outflow tube portion 12 having an outflow port 11. The outflow tube portion 12 is inserted into the drain pipe P connected to the sewer pipe to prevent the wash water from leaking to the outside.

FIG. 3 is a sectional view showing the connection between the outlet side of the trap drain pipe 6 and the insertion pipe 7. The insertion tube 7 is a flow path sectional area S1 which is open in the center (e.g., 21.2cm ²⁾ the flow path cross-sectional area S2 of the discharge port 5 of the toilet body (22.9 cm ²⁾
Is smaller than. In addition, S1 is 13.2 cm ² ~
43.0cm ^2, S2 is preferably a 13.9cm ² ~44.2cm ^2. Further, the flow passage 13 opened in the central portion of the insertion pipe 7 is longer than the diameter D1 (for example, 52 mm) of the portion having the largest flow passage cross-sectional area in the vicinity of the lower end of the insertion pipe 7, resulting in internal resistance. . D1 is 4
1.0 mm to 74.0 mm, the flow path 13 is 42.0 mm
It is preferably 160.0 mm. As a result, the flush water that has flowed at the time of flushing the flush toilet flows in the insertion pipe 7 at a substantially full flow, so that it is possible to delay the entrainment of air in the drainage socket 4 and the siphon break. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion 2 is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning.

FIG. 4 shows a second embodiment of the insertion tube 7 having a flow path cross-sectional area S4 at the bottom end (for example, 21.2c).
Since m ² ) is the orifice structure 14 having a smaller cross-sectional area than the flow passage cross-sectional area S3 (22.9 cm ² ) on the upstream side, a step 15 is formed and resistance in the pipe is created. Note that S4 is 1
3.2cm ² ~43.0cm ^2, S3 is 13.9cm ² ~44.
It is preferably ² cm ² . As a result, the flush water that has flowed in when flushing the flush toilet flushes the step 15 of the orifice structure 14.
Collides with and tries to flow in the direction of the central axis of the insertion tube 7. By this action, the flow velocity of washing water at the end of the insertion pipe 7 in the drain socket 4 is increased, and it is possible to delay the entrainment of air and the occurrence of siphon breakage. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion 2 is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning.

FIG. 5 shows a third embodiment. The flow path cross-sectional area of the insertion pipe 7 is the flow path cross-sectional area S8 on the upstream side (for example, 22.9 cm).
^{From 2} ) to the flow passage cross-sectional area S9 (21.2 cm ² ) on the downstream side, the resistance decreases in the pipe due to the decrease in cross-sectional area. In addition, S8 is 13.9 cm ^{2 to} 44.2 c
m ^2, S9 is preferably 13.2cm ² ~43.0cm ^2. As a result, the wash water that has flowed at the time of washing the flush toilet tries to flow in the central axis direction of the insertion tube 7. By this action, the flow velocity of the washing water at the end of the insertion pipe 7 in the drain socket body 8 is increased, and it is possible to delay the entrainment of air and the breakage of the siphon. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion 2 is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning. Furthermore, since the cross-sectional area is gently reduced, there is no step or the like that may cause dirt, toilet paper, or the like to be caught during cleaning, so clogging can be prevented.

FIG. 6 shows a fourth embodiment. Drainage socket 4
When the flow path cross-sectional area S5 in throttle portion 16 are integrally molded (e.g., 21.2cm ²⁾ the flow path cross-sectional area S2 (22.9 cm ²⁾ and smaller than the narrowed portion 16 of the outlet 5 of the toilet main body 1a Since the flow passage 17 of the narrowed portion 16 is longer than the diameter D2 (for example, 52 mm) of the portion having the largest flow passage cross-sectional area, the resistance in the pipe becomes. As a result, the flush water flowing at the time of flushing the flush toilet flows in the throttle portion 16 almost at full flow, so that the flow velocity is increased and it is possible to delay the entrainment of air from the toilet outlet 5 to cause the siphon break. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion 2 is exhausted, it is possible to improve the performance of discharging the floating contaminants that are likely to remain during cleaning. Further, by integrally molding the inflow port 10, the throttle portion 16 and the like with the drain socket 4, the number of parts can be reduced, and the cost can be reduced.

Further, as shown in FIG. 7, the diaphragm from the downstream side of the flow passage cross-sectional area S6 in throttle portion 16 (e.g. 21.2cm ²⁾ the upstream flow path cross-sectional area S7 (22.9 cm ^2), a step 18 By providing it, it is possible to delay the entrainment of air and the occurrence of siphon breakage. That is, since the cleaning water can be discharged by the siphon action just before the cleaning water in the ball portion 2 is exhausted, it is possible to further improve the performance of discharging the floating dirt.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing the drain socket of FIG.

FIG. 3 is an enlarged sectional view of the vicinity of the insertion pipe 7 of the drain socket of FIG.

FIG. 4 is a sectional view of a drain socket according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a drain socket according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a drain socket according to a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view of a drain socket according to the modified example of FIG.

[Explanation of symbols]

1 ... flush toilet 1a ... Toilet body 2 ... ball part 3 ... Trap drain pipe 4 ... Drainage socket 5 ... outlet 6 ... Trap drain pipe outlet 7 ... Insertion tube 8 ... Drainage socket body 9 ... Seal member 9a ... opening 9b ... sealing member 10 ... Inlet 11 ... Outlet 12 ... Outflow tube part 13 ... Flow path 14 ... Orifice structure 15 ... Step 16 ... Throttle 17 ... Channel 18 ... Step D1 ... Diameter D2 ... Diameter FL ... Floor P ... Drainage pipe S1 ... Channel cross section S2 ... Channel cross section S3 ... Channel cross section S4 ... Channel cross-sectional area S5 ... Channel cross section S6 ... Channel cross-sectional area S7 ... Channel cross section S8 ... Channel cross-sectional area S9 ... Channel cross-sectional area

Claims (4)

[Claims] 1. A drainage socket of a flush toilet comprising a drainage socket body having an insertion pipe having an inflow port connected to a discharge port of the toilet body and an outflow port communicating with a drainage pipe connected to the sewer pipe, A drainage socket for a flush toilet, wherein the flow passage cross-sectional area of the lower end of the insertion pipe is smaller than the flow passage cross-sectional area of the outlet of the toilet body, and the insertion pipe is longer than the diameter of the portion having the largest flow passage cross-sectional area. 2. The drain socket for a flush toilet according to claim 1, wherein the lower end of the insertion tube has an orifice shape. 3. The cross-sectional area of the insertion tube is gradually reduced toward the downstream side.
Drainage socket of the flush toilet described. 4. A drainage socket of a flush toilet having an inlet connected to an outlet of a toilet body and an outlet communicating with a drainage pipe connected to a sewer pipe, the flow provided inside the drainage socket. The flow passage cross-sectional area of the narrowed passage is smaller than the flow passage cross-sectional area of the outlet of the toilet body, and the flow passage of the throttle portion is longer than the diameter of the portion where the flow passage cross-sectional area of the throttle portion is the largest. A drainage socket for a flush toilet.