JPH0248535Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a socket-type joint that connects a flush toilet, particularly a Western-style toilet, and a lower pipe.

[Description of prior art]

There are various ways to connect the outlet attached to the bottom of the flush toilet and the lower piping. For example, the upper end of the lower piping is widened to form a socket shape, and a filler is applied to the inner circumference of the socket. Alternatively, as shown in FIG. 4, a cylindrical joint 101 with a lip made of soft rubber is fitted into the toilet side outlet 103 and a special flange 105 is used to secure the outlet. joint 10
1 to the toilet bowl side, lower piping 107
A method in which the lower part of the joint 101 is inserted is often used.

However, among the above connection methods, the former method is troublesome to construct and has poor durability after construction.
Further, the latter method has a simpler bonding method than the former, and has better durability after construction, but is expensive because it has a complicated structure that requires dedicated flanges and dedicated bolts as described above.

Furthermore, in any of the above methods, when water flows onto the floor surface, the water enters the gap between the inner periphery of the floor surface through-hole for downward piping and the outer periphery of the joint portion, and leaks downward. In order to prevent this water leakage, it is necessary to fill the gap with a filling material, which is troublesome.

[Purpose of invention]

The purpose of this invention is to improve the above-mentioned problems and provide a socket-type joint that has sufficient sealing performance and is easy to connect.

[Structure of the idea]

This invention was developed to achieve the above object in a joint made of soft material that connects the bottom outlet of a flush toilet installed on the floor and the lower piping.
an annular lip disposed above the inner periphery of the joint so as to elastically abut against the outer circumferential surface of the cylindrical portion of the discharge port protruding downward from the bottom of the toilet bowl; and an annular lip that elastically abuts against a flat seat on the outer side of the base of the cylindrical portion. a cylindrical lip disposed at the upper end of the joint; an inverted conical surface disposed near the lower inner circumference of the joint so as to elastically abut against the outer periphery of the lower end of the cylindrical portion; The socket-type joint is characterized in that it has an annular flat surface at the lower end of the joint.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail using the drawings. Figure 1 is a cross-sectional view of the main parts of a socket-type joint, Figure 2 is a side view including a partial cross-section of a flush toilet installed on the floor, and Figure 3 shows the connection between the toilet's outlet and the lower piping. FIG. 3 is an enlarged vertical cross-sectional view of the vicinity of the connecting portion.

A circular joint 1 made of soft rubber connects an outlet 3 at the bottom of a flush toilet installed on the floor and a lower pipe 7. In the joint 1 of the present invention,
First, an annular lip 21 having an acute angle protrusion is disposed above the inner periphery. The free diameter of the tip of the lip is made slightly smaller than the outer diameter of the cylindrical portion of the toilet bowl outlet 3, and in the fitted state, it comes into contact with the outer periphery of the cylindrical portion due to rubber elasticity and is maintained watertight.

The upper end of the joint 1 is also provided with a cylindrical lip 23 having an acute angle. The free height from the lower end surface of the joint to the tip of the lip is slightly larger than the height from the floor of the flat seat on the outer side of the base above the cylindrical part of the outlet 3 when the toilet is installed on the floor. When both are attached, this lip is in contact with the flat seat due to its rubber elasticity and is maintained watertight.

Next, an inverted conical surface 2 is placed below the inner circumference of the joint 1.
5 is provided. The free level of this conical surface is set slightly higher than the similar conical surface level at the position where the outer peripheral edge of the lower end of the cylinder of the discharge port 3 comes into contact when both the toilet bowl and the joint are installed. As a result, the conical surface of the joint is brought into pressure contact with the outer periphery of the lower end of the outlet in a watertight manner.

Furthermore, the lower end of this joint 1 is an annular flat surface 27 or a flat seat with a lip,
When the toilet bowl and the joint are installed, the lower end of the joint 27 is pressed against the floor surface in a watertight manner by means of rubber elasticity.

An annular groove 29 is provided near the lower end of the inner circumference of the joint 1 into which a collar formed by bending the upper end of the pipe 7 outward at a right angle is inserted. By fitting the collar of the piping into this groove, lowering the toilet bowl from above into this joint, and fitting the outlet, the two are connected, and the collar is crimped and held in a watertight state by rubber elasticity.

The socket-type joint of the present invention, in which the above-mentioned seal lips, seal surfaces, etc. are provided at various locations on the soft rubber circular joint 1, is easy to install, has excellent sealing performance, and is robust. This is because the conical surface 25 and the annular groove 29 are sandwiched from above and below by the floor surface and the lower end of the toilet outlet and are pressed very effectively.

[Effect of idea]

The socket-type joint according to the present invention does not require the use of a filler or a special flange as in the prior art, and can connect the toilet bowl and piping very easily and reliably. It is not necessary and has good durability after installation.

The sealing performance on the waste water side is also much improved compared to the conventional system.

Furthermore, the socket-type joint of the present invention has its lower end surface crimped to the floor surface in a watertight manner.
It is possible to reliably prevent the water flowing from the floor surface from leaking to the lower floors.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a socket-type joint showing an embodiment of the present invention, FIG. 2 is a side view including a partial sectional view, and FIG. 3 is an enlarged vertical sectional view of a part of FIG. 1. FIG. 4 is a longitudinal cross-sectional view showing how a conventional joint is used. 1... Joint, 3... Outlet, 7... Piping, 21... Annular lip, 23... Cylindrical lip, 25... Inverted conical surface, 27... Annular plane,
29...Annular groove.

Claims (1)

[Scope of utility model registration request] In a joint made of a soft material that connects a bottom outlet of a flush toilet mounted on the floor with a lower pipe, the joint is configured to elastically abut against the outer peripheral surface of a cylindrical portion of the outlet that protrudes downward from the bottom of the toilet. an annular lip disposed above the inner periphery; a cylindrical lip disposed at the upper end of the joint so as to elastically abut against a flat seat on the outer side of the base of the cylindrical portion; and an elastic lip disposed on the outer periphery of the lower end of the cylindrical portion. A socket-type joint characterized by having an inverted conical surface disposed near the lower inner circumference of the joint so as to come into contact with the joint, and an annular flat surface at the lower end of the joint that comes into elastic contact with the floor surface.