JPH0743190Y2 - Cleaning mouth - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning port which is connected to an appropriate location of a drainage channel buried in the ground and is opened when cleaning a drainage channel or the like.

[0002]

2. Description of the Related Art As shown in FIG.
The inspection cylinder 52 is connected to the drainage mass 51 connected to the confluence of the drainage channel 50, and is arranged on the inspection cylinder 52. It is opened when cleaning the inside of the drainage mass 51 or the drainage channel 50. It is what is done.

As such a cleaning port, an actual flat 3-7
As shown in Japanese Patent No. 6047 and FIG. 5, "an annular main body and a lid attached to the upper end of the annular main body are provided with annular ribs projecting from the inside upper part of the main body, and the lower half of the annular rib is The lid is a tapered portion whose diameter increases downward, and the lid has a lid main body having an insertion groove formed at a predetermined peripheral portion, and an insertion portion protruding from the lower surface of the lid main body and having a smaller diameter than the lid main body.
The packing includes an annular packing fitted to the outer periphery of the insertion section, the packing including an annular band and fins extending obliquely outward and upward from the lower edge of the annular band, and the outer diameter of the packing is A cleaning port is known, which is characterized in that it is set slightly larger than the inner diameter of the rib of the annular body. The cleaning port 60 shown in FIG.
It is convenient because it can be opened easily without rotating it from 2, but it includes the following points that must be improved.

That is, in the conventional cleaning port 60, the annular packing 63 is arranged in the space formed between the lid 61 and the main body 62, and the annular packing 6 is formed.
3, the tongue piece 64 of the annular packing 63 is easily changed over time. The reason is that the outer diameter of the tongue piece 64 is set larger than the inner diameter of the annular rib 65 on the main body 62 side, and the tongue piece 64 is in contact with the annular rib 65 in a bent state. is there.

Therefore, the present inventor has completed the present invention as a result of repeated studies on how to improve the durability of the annular packing.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and the problem to be solved is to increase the durability of the annular packing constituting the cleaning port, As a result, the durability of the cleaning port should be increased.

The object of the present invention is to improve the durability of the annular packing by improving the annular packing and the portion of the tubular body on which the annular tongue abuts, thereby improving the durability. It is to provide a cleaning port that can be done with a simple configuration.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, the means adopted by the present invention will be described with reference to the reference numerals used in the embodiments. In the cleaning port 100 provided with the tubular body 10 and the lid body 20 fitted into the upper end opening 11 of the tubular body 10, the tubular body 10 is formed with the annular recess 12 at the upper inner peripheral edge thereof. At the same time, the lid 20 is attached to the upper end opening 1 of the lid 10.
A lid body 21 that covers 1 and a holding member that is formed in a tubular shape on the back surface of the lid body 21 and is located inward from the edge so as to form a predetermined gap 40 between the annular recess 12 of the tubular body 10. A cylinder 22,
Assuming that a supporting recess 23 formed on the outer periphery of the holding cylinder 22 is provided, an engaging portion 31 that is engaged in the supporting recess 23 and a base portion 32 that is integrated with the lower end of the engaging portion 31.
And the annular recess 1 of the cylindrical body 10 integrated with the base 32.
2 and an annular tongue 33 that elastically abuts inside
The cleaning opening 100 ″ is characterized in that the annular packing 30 having the bent groove 34 formed at the outer boundary between the base 32 and the base 32 is arranged in the gap 40.

[0009]

The cleaning port 100 according to the present invention constructed as above has the following effects.

First, in the cleaning port 100, the annular packing 30 must be attached to the lid 20 side.
Since the support recess 23 is formed on the outer periphery of the holding cylinder 22 of the lid 20, the annular packing 30 is formed in the support recess 23.
By fitting the engaging portion 31 of the above, the attachment to the lid 20 can be easily performed. That is, the annular packing 30 itself is formed of a material having elasticity, and the engaging portion 3 on the annular packing 30 side.
Since 1 is formed in a shape corresponding to the support recess 23 on the lid 20 side, the annular packing 30 can be obtained by performing the same operation as fitting a rubber band to a tea container.
Then, the attachment to the lid 20 is completed. The annular packing 30 attached in this manner is reliably attached because the engaging portion 31 is embedded in the support recess 23 on the lid 20 side due to its elasticity.

The lid body 20 with the annular packing 30 thus attached is fitted into the upper end opening 11 of the cylindrical body 10 connected to the drainage channel 50.
Is formed to have a diameter substantially equal to that of the upper end opening 11 of the tubular body 10, so that the tubular body 10 and the lid body 20 are provided as shown in FIG.
The same state is obtained at any part within the gap 40 formed between them. When fitting the lid 20,
The annular packing 30 is provided with the lid 20 by the engaging portion 31.
Since it is firmly fixed to the support recess 23 on the side, the annular packing 30 is not displaced with respect to the lid body 20.

When the lid body 20 is fitted into the upper end opening 11 of the cylindrical body 10 as described above, the annular packing 30 has the shape shown in FIG.
The state becomes as shown in. That is, the annular tongue piece 33 of the annular packing 30 has the annular recess 1 on the side of the tubular body 10.
While it flexes toward the engaging portion 31 until it is completely accommodated in 2, the flexure is temporary, and the bending groove 34 is provided between the annular tongue 33 and the base 32. Is formed, it is performed in a good condition. And
When the annular tongue 33 is completely positioned in the annular recess 12, the annular tongue 33 is shown by an imaginary line in FIG. 3 due to the bent groove 34 between the annular tongue 33 and the base 32. The ring-shaped tongue piece 33 is surely returned to a state close to the unloaded state.
Is in close contact with the annular recess 12 on the cylinder body 10 side. That is, in the state shown in FIG. 3, the annular tongue piece 33 of the annular packing 30 spreads to a state close to a natural state (no load state) and maintains a state in which the annular tongue piece 33 is in close contact with the annular recess 12. The secular change of the packing 30 is very small.

Of course, in the state shown in FIG.
Since the gap 40 between the cylinder body 10 and the lid body 20 is completely filled by the engaging portion 31 of the annular packing 30 and the annular tongue piece 33, the odor from the drainage channel 50 side is transferred to the outside of the cleaning port 100. Since the ring-shaped tongue piece 33 is in close contact with the ring-shaped recess 12 on the cylinder body 10 side,
It goes without saying that rainwater, sand, and the like that have entered through the gap formed between the upper end opening 11 of 0 and the lid body 21 of the lid body 20 do not flow down to the drainage channel 50 side. Also, ring packing 3
0, the engaging portion 31, and the annular tongue piece 33 have a gap that opens only upward, so that the cleaning port 100 is
It flows down from the upper side and sand etc. are stored in this gap.

Further, when the lid 20 having the annular packing 30 is removed from the cylindrical body 10, the annular packing 3 is also used.
Since the annular tongue piece 33 of 0 has sufficient flexibility, the lid 20 can be removed without damaging the annular packing 30. In this way, after the upper end opening 11 of the cylindrical body 10 is opened and necessary cleaning is performed,
It is sufficient that the lid 20 is fitted into the upper end opening 11 as described above, and in that case, the annular packing 30 performs the same operation as described above.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the cleaning port 100 according to the present invention will be described in detail according to the embodiment shown in the drawings.
0 is a cylindrical body 10 connected to an appropriate portion of the drainage channel 50,
A lid body 20 fitted in the upper end opening 11 of the cylindrical body 10.
Attached to the holding cylinder 22 of the lid 20
And an annular packing 30 that fills a gap 40 formed between the cylindrical body 10 and the cylindrical body 10.

The cylindrical body 10 may have any shape as long as it can be connected to the drainage channel 50.
As shown in FIGS. 2 and 3, it is necessary to have an annular recess 12 on the inner peripheral edge of the upper portion. This annular recess 1
2 is for closely contacting an annular tongue piece 33 of an annular packing 30 described later in a state close to a natural state.

The lid 20 has a lid main body 21 having a planar shape as shown in FIG. 1, and a holding cylinder 22 integrally formed on the lower surface of the lid main body 21. The holding cylinder 22 is located inward from the edge of the lid main body 21 with a predetermined size, that is, a size capable of forming a gap 40 for housing the annular packing 30, and has an annular shape. It is a thing. An annular support recess 23 for fitting the engagement portion 31 of the annular packing 30 is formed on the outer peripheral surface of the holding cylinder 22. As shown in FIG. 1, the lid body 21 of the lid body 20 is provided with a predetermined pattern for the purpose of preventing slipping or the like. Above all, by forming the display portion 24, , Various displays can be made.

The ring-shaped packing 30 is integrally formed by molding a flexible material (polyethylene in this embodiment) such as synthetic rubber or synthetic resin into a ring-shaped one. It has an engaging portion 31 having an inner diameter slightly smaller than the outer diameter. Of course, the cross-sectional shape of the engaging portion 31 is the same as the cross-sectional shape of the support recess 23 on the lid 20 side. The annular packing 30 has a base portion 32 integrated with the lower end of the engaging portion 31, and an annular tongue piece 33 integrated with the base portion 32 and having a length such that the upper end reaches the upper portion of the engaging portion 31. A bending groove 34 is formed on the lower surface of the boundary between the annular tongue 33 and the base 32.

[0019]

As described above, since the cleaning opening 100 according to the present invention is configured as described above, it is possible to enhance the durability of the annular packing 30 and consequently enhance the durability. Can be provided with a simple configuration.

That is, according to the cleaning port 100, the annular tongue piece 33 is brought into close contact with the annular recess 12 on the cylindrical body 10 side in a spread state, so that the durability of the annular packing 30 itself is enhanced. As a result, the durability of the cleaning port 100 can be improved. A bent groove 34 is provided below the boundary between the base 32 and the annular tongue 33.
Since the annular tongue piece 33 is formed, the flexibility of the annular tongue piece 33 can be made sufficient, and the durability of the annular packing 30 itself can be enhanced. Since the annular tongue piece 33 has sufficient flexibility so as to come into close contact with the annular recess 12 on the cylinder body 10 side, the drainage channel 5
Odor can be prevented from leaking to the outside from the 0 side, and conversely, rainwater, sand on the surface of the ground, etc. will not flow down into the drainage channel 50. Since the tubular body 10 and the lid body 20 as well as the annular packing 30 can be integrally molded, the structure of the cleaning port 100 itself can be simplified, and these can be easily manufactured. Such an excellent effect is exhibited.

[Brief description of drawings]

FIG. 1 is a plan view of a cleaning port according to the present invention.

FIG. 2 is a vertical sectional view of the cleaning port.

FIG. 3 is an enlarged cross-sectional view of a main part of FIG.

FIG. 4 is a perspective view showing a relationship between a cleaning port and a drainage channel.

FIG. 5 is a vertical sectional view showing a conventional cleaning port.

[Explanation of symbols]

 100 Cleaning Port 10 Cylindrical Body 11 Top Opening 12 Annular Recess 20 Lid 21 Lid Main Body 22 Holding Tube 23 Support Recess 30 Annular Packing 31 Engagement Part 32 Base 33 Annular Tongue 34 Bent Groove 40 Gap 50 Drainage Channel

Claims (1)

[Scope of utility model registration request] 1. A cylindrical body connected to an appropriate place of a drainage channel,
In a cleaning opening provided with a lid fitted into an upper end opening of the tubular body, the tubular body is formed with an annular recess in an upper inner peripheral edge thereof, and the lid body is provided with the lid body. A lid body that covers the upper end opening of the lid body, and a holding tube that is formed in a tubular shape on the back surface of the lid body and is located inward from the edge to form a predetermined gap between the tubular body and the annular recess of the tubular body. A supporting recess formed on the outer periphery of the holding cylinder, an engaging portion to be engaged in the supporting recess, a base portion integrated with the lower end of the engaging portion, and an integral body with the base portion. An annular packing having an annular tongue that is elasticized and elastically abuts in the annular recess of the cylindrical body, and a bent groove formed at an outer boundary between the annular tongue and the base is arranged in the gap. A cleaning port characterized by that.