JPS629422Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a sewage basin.

Conventionally, it was difficult to connect sewage basins to pipes made of vinyl chloride resin, which are bonded with adhesive, because adhesives did not work, so caulking was sometimes used at the connection part, and sometimes they were connected without applying anything. However, there was a drawback that the pipe could easily come off due to external forces such as ground subsidence. It is also possible to mold the sewage basin using vinyl chloride resin, which is a resin that has an adhesive effect, but vinyl chloride resin has a poor flow of resin when molded compared to polypropylene resin, so it must be made thicker. This increases the weight and costs. In order to solve this problem, one possibility is to fit a vinyl chloride resin collar into the connection port where the pipe is connected, insert the vinyl chloride pipe into the collar, and bond it with adhesive. However,
In order to fix the vinyl chloride collar inside the connection port, an annular ridge was formed on the inner periphery of the opening end of the connection port, and the collar was attached to the connection port by insert molding, making it troublesome to attach the collar. .

The present invention was developed in view of the above-mentioned problems.A PVC resin collar with protrusions on the outer periphery is attached to the inner periphery of the connection port to which the PVC pipe of the sewage basin is connected. A resin pipe can be adhesively connected to a connection port via a vinyl chloride resin collar, and by attaching a vinyl chloride resin collar having protrusions on the outer periphery to the connection port, the protrusions are strongly crimped into the connection port. The strong frictional force is used to prevent the collar from coming out of the connection port in the pulling direction.

Next, the configuration of an embodiment of the present invention is shown in the attached drawings, Figure 1.
FIG. 2 will be explained.

1 is a sewage basin body made of polypropylene resin,
A connection port 2 to which an inflow pipe and an outflow pipe made of a vinyl chloride resin pipe 10 are connected is integrally formed on the peripheral surface, and a stopper 5 is provided in an annular shape on the inner peripheral side of the inner end opening edge of the connection port 2. is prominent. Furthermore, a collar 4 made of a short tube made of vinyl chloride resin is fitted into the connection port 2. Projections 3 are formed at two or four opposing positions on the outer peripheral surface of the collar 4, and the inner ends of the projections 3 are approximately perpendicular to the outer peripheral surface of the collar 4, and the outer ends are formed into inclined surfaces. When the collar 4 is fitted into the connection port 2, the protrusion 3 is pressed against the inner circumference of the connection port 2. Further, the inner circumferential surface of the collar 4 is tapered from the outer end to the inner end so that the inner diameter is slightly reduced to absorb dimensional errors of the inserted pipe 10.

Reference numeral 6 denotes a hollow cylindrical connecting body made of polypropylene resin with an open top and bottom, which is supported on the upper edge 7 of the sewage basin body 1 and stacked on the sewage basin body 1, and has a peripheral wall for connecting a pipe. Knockout hole 8
is formed. Furthermore, a lid 9 made of synthetic resin is fitted into the upper opening of the connecting body 6.

Next, the operation of the above embodiment will be explained. When the collar 4 is fitted into the connection port 2, the protrusion 3 of the collar 4, which is harder than the connection port 2, is strongly pressed against the inner peripheral surface of the connection port 2, and its frictional force prevents the collar from coming off. A comparison of the pulling forces of the collar 4 from the connection port 2 is as follows.

No protrusion 18Kg 2 protrusions 62Kg 4 protrusions 68Kg Since the pulling force is sufficient if it is 50Kg or more, it is clear that the protrusions 3 are sufficient to prevent the protrusions from coming off.

The collar 4 fitted into the connection port 2 in this way
A vinyl chloride resin pipe 10 is inserted inside and fixed with adhesive.

Next, in the embodiment shown in FIG. 3, the protrusion 3 is annular. In this case, the pulling force of collar 4 is 105 kg. Note that the other configurations and operations are the same as those of the previous embodiment.

Further, in any of the embodiments described above, no recess is formed in the inner circumferential surface corresponding to the projection 3 of the connection port 2, but a slight shallow recess may be formed at this position. However, in this case as well, the protrusion 3 is strongly press-fitted into the recess and is prevented from coming off due to frictional force.

According to the present invention, a vinyl chloride resin collar is attached to the inner periphery of the connection port of the sewage basin body to which the vinyl chloride resin pipe is connected, so that the sewage basin body is difficult to connect to the vinyl chloride resin pipe. In your mouth
A vinyl chloride resin pipe can be easily fixed by adhering it with an adhesive via a vinyl chloride resin collar. Furthermore, since a protrusion is formed on the outer periphery of the collar attached to the connection port, this protrusion is strongly pressed against the inner circumferential surface of the connection port, creating a strong frictional force and preventing the collar from coming off from the connection port. is possible,
Moreover, since the collar is simply fitted into the connection port, the installation work is easy.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a sewage basin showing an example of the implementation of the present invention, Fig. 2 is an enlarged longitudinal sectional front view of the same connection port, and Fig. 3 is an enlarged longitudinal sectional view showing another embodiment of the same. It is a front view. 1...Sewage basin body, 2...Connection port, 3...Protrusion, 4...Color, 10...Pipe.

Claims (1)

[Scope of utility model registration request] A sewage basin characterized in that a vinyl chloride resin collar having protrusions on the outer periphery is attached to the inner periphery of a connection port to which a vinyl chloride resin pipe of the sewage basin body is connected.