JPH08209785A - Connecting packing of toilet bowl discharge outlet and connecting structure and packing assembly - Google Patents

Abstract

PURPOSE: To easily produce (perticularly molding) a toilet bowl even if it is made of ceramics, by forming the water discharge outlet of the toilet bowl cylindrically. CONSTITUTION: A packing 10 is provided with a cylindrical part 11, a collar 12 provided inwardly at the periphery of the front end of the cylindrical part, a fold-form part 13 provided at the external peripheral face of the cylindrical part. A step 14 is formed at the peripheral crossing corner of the inner peripheral face of the cylindrical part 11 and the collar 12. The step 14 of the packing 10 is fitted on the external peripheral face of the front end of the water discharge outlet and thereby, a space allowing the cylindrical part 11 to warp inward between the cylindrical part 11 and the water discharge outlet 15 is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing and a connecting structure for connecting a toilet drain, and a packing assembly,
In particular, the present invention relates to a packing, a connecting structure, and a packing assembly for connecting a toilet drain with a straight (straight tubular) drain.

[0002]

2. Description of the Related Art As shown in FIG. 5, when the drainage port 2 of a pottery toilet 1 is connected to a drainage pipe 3, packing is attached to the drainage port 2. The packing 4 shown in FIG. 4 is known as this packing (Japanese Utility Model Publication No. 60-35671).
The packing 4 has a tubular portion 4a and a plurality of fold-shaped portions 5 rising radially from the outer peripheral surface of the rear portion of the tubular portion. The tip of the fold-shaped portion 5 is elastically contacted with the inner peripheral surface of the drainage pipe 3 to seal the drainage pipe 3. In addition, an inward flange 6 that covers the tip surface of the drainage port 2 is provided around the tip of the tubular portion 4a.

By the way, the drainage port 2 of the above-mentioned pottery toilet 1
Also, the drainage pipe 3 made of cast iron pipe or steel pipe has variations in dimensions. For example, both the drainage port 2 and the drainage pipe 3 have a dimensional tolerance of ± 2 mm or more. Further, the drainage port 2 and the drainage pipe 3 are often connected in a state in which a direction shift or a center shift occurs due to an attachment error during construction.

Therefore, the convex portion 7 is formed on the outer peripheral surface of the tip of the drainage port 7.
As shown in FIG. 4, when the distance between the outer circumference of the fold-shaped portion 5 and the inner peripheral surface of the drainage pipe 3 is too small, the tubular portion 4a of the packing 4 is bent inward. .

That is, by providing the convex portion 7 around the outer peripheral surface of the tip of the drainage port 7, the outer periphery of the drainage port behind the convex portion 7 is
A space is formed to allow inward bending of the tubular portion 4a of the packing 4. By forming such a space, it is possible to absorb variations in the sizes of the drainage pipe and the drainage port, and to improve the water blocking performance. Further, the drainage pipe and the drainage port can be easily connected, and the workability is improved.

[0006]

As shown in Fig. 5, the toilet bowl 1
When the convex strip 1H is provided around the back surface of the toilet bowl, forming such a convex portion 7 at the tip of the outlet of the toilet bowl made of pottery is a mold used for manufacturing the toilet bowl (for slurry casting). A complicated split mold is required for the molding die, and the cost of the die increases, and it takes time and labor to assemble and disassemble the die, resulting in low manufacturing efficiency.

It is an object of the present invention to provide a packing for connecting a toilet drain, a connecting structure, and a packing assembly that do not require the formation of such a convex portion at the tip of the drain.

[0008]

The packing according to claim 1 is
In a packing for connecting a toilet drain port, which has a tubular portion, a flange portion provided inwardly around a distal end of the tubular portion, and a fold portion circumferentially provided on an outer peripheral surface of the tubular portion, It is characterized in that a step portion is provided around the corner portion where the inner surface of the tubular portion and the flange portion intersect.

The connection structure according to claim 2 is a structure in which a drainage pipe is connected to a drainage port of a toilet bowl via packing, and the drainage port has a straight cylindrical shape including an outer peripheral surface including a tip thereof. On the other hand, the packing according to claim 1 is directly fitted by fitting the stepped portion of the packing onto the outer peripheral surface of the tip of the drainage port, and the inner peripheral surface of the drainage pipe is closely attached to the pleated portion of the packing. The end of the drainage pipe is externally fitted to the drainage port.

A packing assembly according to a third aspect of the present invention includes a tubular portion, a flange portion provided inwardly around a distal end of the tubular portion, and a pleated portion provided around an outer peripheral surface of the tubular portion. And a ring internally fitted so as to come into contact with an intersection corner portion between the tubular portion and the flange portion of the packing.

The connection structure of claim 4 is a structure in which a drainage pipe is connected to a drainage port of a toilet via the packing assembly of claim 3, and the drainage port has a flat outer peripheral surface including the tip. The ring is externally fitted to the outer peripheral surface of the tip of the drainage port, and the inner peripheral surface of the drainage pipe is brought into close contact with the pleated portion of the packing so that the end of the drainage pipe is outside the drainage port. It is characterized by being fitted.

[0012]

In the packing and connecting structure according to claims 1 and 2, the stepped portion provided on the packing covers the outer peripheral surface of the tip of the drainage port so that the gap between the tubular portion of the packing and the drainage port is increased. A space that allows the inward bending of the tubular portion is formed.

In the packing assembly and the connecting structure according to claims 3 and 4, the ring covers the outer peripheral surface of the tip of the drainage port, so that the tubular part of the tubular part is provided between the tubular part of the packing and the drainage port. A space is formed to allow inward bending.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of a packing according to an embodiment of claim 1, wherein the upper half is a sectional view and the lower half is a side view.

This packing 10 also has a tubular portion 11, a flange portion 12 provided inwardly around the distal end of the tubular portion 11, and a pleated portion provided around the outer peripheral surface of the tubular portion 11. 13 and 13. In this packing 10, a step portion 14 is provided around an inner corner surface of the tubular portion 11 and a flange portion 12 at an intersection corner portion.

FIG. 2 is a sectional view showing the structure for connecting the drainage port and the drainage pipe according to the embodiment of claim 2 using the packing 10. The packing 10 is fitted onto the drain port 15. The drainage port 15 has a flat outer peripheral surface as a whole including the distal end (that is, the convex portion 7 unlike the conventional drainage port 2 shown in FIG. 4 is not provided).

The step portion 14 of the packing 10 is the drain port 15
A space is formed between the tubular portion 11 and the drainage port 15 so as to allow the tubular portion 11 to bend inward, by being fitted onto the outer peripheral surface of the tip end of the tubular portion 11.

A drainage pipe 16 is attached to the packing 10 so as to be fitted onto the packing 10, and the inner peripheral surface of the drainage pipe 16 is packed in the packing 10.
It is in close contact with the fold-shaped portion 13. By being pushed by the drainage pipe 16 via the pleated portion 13, the tubular portion 11 bends inward and is in close contact with the outer peripheral surface of the drainage port 15.

FIG. 3 is a block diagram showing the packing assembly according to the embodiment of claim 3 and the connection structure of claim 4, wherein the upper half is a sectional view and the lower half is a side view.

The packing 20 also has a tubular portion 21, a flange portion 22 provided inwardly around the distal end of the tubular portion 21, and a pleated portion provided around the outer peripheral surface of the tubular portion 21. And 23. The packing 20, the inner peripheral surface of the tubular portion 21, and the collar portion 2
The packing assembly 25 is formed by the ring 24 that fits in the corner portion intersecting with the inner ring 2. This ring 2
A convex portion 26 is provided on the outer peripheral surface of No. 4 at the tip end side in the ring axis direction. An inward flange 27 is provided on the tip surface of the ring 24.

After fitting the ring 24 onto the drain port 15,
The packing 20 is fitted onto the ring 24.

The convex portion 25 of the ring 24 abuts on the intersection corner portion of the tubular portion 21 and the flange portion 22 of the packing 20, whereby the tubular portion between the tubular portion 21 and the drainage port 15 is abutted. A space is formed to allow 21 to flex inward.

A drainage pipe 28 is attached to the packing 20 so as to be fitted onto the packing 20, and the inner peripheral surface of the drainage pipe 28 has the packing 20.
It is in close contact with the folds 23. By being pushed by the drain pipe 28, the tubular portion 21 bends inward and comes into close contact with the ring 25 or the outer peripheral surface of the drain port 15.

As is clear from these examples, the drainage port 15 is in the shape of a straight cylinder, which facilitates its manufacture.

Although the above embodiment relates to the drainage port of a Western style toilet, the present invention can be applied to the drainage port of a wall drainage type urinal.

[0026]

As described above, according to the present invention, since the drainage port of the toilet bowl can be formed into a straight tube shape, even the toilet bowl made of ceramics can be easily manufactured (particularly, slurry casting molding). Becomes According to the present invention, even if the drainage port has a straight tube shape, it is possible to absorb variations in the dimensions of the drainage pipe and the drainage port and to improve the water blocking performance. In addition, the workability is also good.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a packing according to an embodiment.

FIG. 2 is a configuration diagram showing a drainage port connection structure according to an embodiment.

FIG. 3 is a configuration diagram showing a packing assembly according to an embodiment and a drainage port connection structure using the packing assembly.

FIG. 4 is a cross-sectional view showing a conventional example.

FIG. 5 is a perspective view showing a drain port and a drain pipe of the toilet bowl.

[Explanation of symbols]

 1 Toilet bowl 2,15 Drainage port 3,16,28 Drain pipe 4,10,20 Packing 4a, 11,21 Cylindrical part 5,13,23 Folded part 6,12,22 Collar part 7 Convex part 14 Step part 24 Ring 25 packing assembly

Claims (4)

[Claims] 1. A toilet drain outlet having a tubular portion, a flange portion provided inwardly around a distal end of the tubular portion, and a pleated portion circumferentially provided on an outer peripheral surface of the tubular portion. A packing for connecting a toilet drainage outlet, characterized in that a step portion is provided around an intersection corner between the inner surface of the tubular portion and the flange portion. 2. In a structure in which a drainage pipe is connected to a drainage outlet of a toilet bowl via packing, the drainage outlet has a straight cylindrical shape with a flat outer peripheral surface including a tip, and the drainage outlet of claim 1 is connected to the drainage outlet. The packing is directly fitted by externally fitting the stepped portion of the packing onto the outer peripheral surface of the tip of the drainage port, and the inner peripheral surface of the drainage pipe is closely attached to the pleated portion of the packing so that A structure for connecting a toilet drainage port and a drainage pipe, characterized in that an end portion is externally fitted to the drainage port. 3. A toilet drain outlet having a tubular portion, a flange portion provided circumferentially inwardly at a distal end of the tubular portion, and a pleated portion circumferentially provided on an outer peripheral surface of the tubular portion. A packing assembly for connecting a drainage port of a toilet, comprising: a packing for connection; and a ring internally fitted so as to come into contact with an intersection corner portion of the tubular portion and the flange portion of the packing. 4. A structure in which a drainage pipe is connected to a drainage outlet of a toilet bowl via the packing assembly of claim 3, wherein the drainage outlet has a straight cylindrical shape including an outer peripheral surface including a tip, and the ring. Is externally fitted to the outer peripheral surface of the tip of the drainage port, and the inner peripheral surface of the drainage pipe is brought into close contact with the pleated portion of the packing so that the end portion of the drainage pipe is externally fitted to the drainage port. The feature is the connection structure between the toilet drain and the drain pipe.