JPS6219785Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is suitable for wiring or piping pits, indoor gutters,
The present invention relates to a seal structure for a floor opening in which a large or long floor opening, such as a large floor inspection opening, is closed off with a plurality of divided lids.

Conventionally, in most cases of this type of floor opening, a sealing material is interposed in the supporting part of the split lid in the outer frame attached to the opening edge of the floor opening, and the split lid and the outside are separated. A seal was placed between it and the frame.

However, in this type of device, because the opposing surfaces of each divided lid body are simply brought into contact with each other, a gap is created between each lid body due to manufacturing errors, and this gap is passed through. In addition, there are problems such as sand and water from outside entering the floor opening, or odor inside the floor opening leaking out to the outside. Since the weight of the body is constantly applied, permanent deformation occurs and the sealing effect cannot be exerted over a long period of time.

The present invention has been developed in response to these circumstances.The present invention provides effective sealing means between the divided lid bodies to provide a seal between each divided lid body, and each sealing means has a long-term lifespan. It is an object of the present invention to provide a sealing structure for a floor opening that can exhibit a sealing effect throughout.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a floor inspection port F to which a seal structure according to an embodiment of the present invention is applied. This floor inspection opening F is constructed by attaching an outer frame 3 to the opening edge of a floor opening 2 opened in the floor surface 1, and forming a shoulder 4 on the inside of the upper part of the outer frame 3, and forming an inner part on the lower part of the outer frame 3. A floor cover body 6 is formed with an inward flange portion 5 projecting toward the direction, and is fitted into the outer frame 3 to open and close the floor opening 2. A pair of left and right divided cover bodies 7,
7, the upper part of the frame 8 of each split lid 7 protrudes outward, and the shoulder 4 of the outer frame 3 when the lid is closed.
An outward projecting edge 9 that locks on the upper surface is formed, and an inward projecting edge 11 for attaching the cover plate 10 provided in the frame 8 is formed, and a hollow elastic body is formed on the upper surface of the inward flange portion 5 of the outer frame 3. A sealing material 12 formed of
is provided, and this sealing material 12 seals each divided lid body 7 when the lid is closed.
The outer frame 3 is brought into close contact with the lower surface of the inward protruding edge 11 formed on the frame 8 to cover the gap d between the outer frame 3 and the frame 8.

On the other hand, as shown in FIG. 3, an airtight material 13 is attached to the portions where the divided lid bodies 7 face each other, so that the space between these divided lid bodies 7 is shielded.

This airtight material 13 is a soft material formed in a hollow shape, and has its upper surface aligned with the lower surface of the outwardly directed flange 9 of the split lid body 7, and its tip portion slightly outwardly from the outwardly directed ridge 9. It is attached to the proximal end of the outward projecting edge 9 in a protruding state.

Therefore, according to the floor inspection port F to which this embodiment is applied, the outer frame 3 and the divided lid body 7 are separated by the sealing material 12.
A gap d is shielded between the airtight material 1 and the airtight material 1.
3, the gap d between the divided lid bodies 7 is covered.

At this time, the load of each split lid body 7 is supported by the outward projecting edge 9 formed on the frame body 8 being engaged with the upper surface of the shoulder portion 4 of the outer frame 3, so that the split lid body 7 An excessive load is not applied to the sealing material 12 that shields the space between the split lid body 7 and the outer frame 3 at the lower end of the sealing material 12, and deterioration of the sealing material 12 is prevented.

Furthermore, the airtight material 13 is installed in a state in which it projects slightly outward from the outward projecting edge 9 of each split lid body 7,
By pressing their tips together,
Since it is configured to shield the space between each divided lid body 7, the division is more secure than in the case where the flexible materials are simply brought into contact with each other or the flexible materials are brought into contact with the divided lid bodies 7. In addition to being able to shield between the lid bodies 7, each airtight material 13 can separate the divided lid bodies 7.
Since the airtight material 13 is bent in a direction perpendicular to the load direction, the sealing performance will not be impaired due to permanent deformation of the airtight material 13 due to the weight of the split lid body 7 even after long-term use.

As is clear from the above explanation, according to the sealing structure of the floor opening body according to the present invention, by attaching an airtight material to the opposing parts of the divided lid bodies, the gap between the outer frame and the divided lid bodies is In addition, the sealing effect is exhibited also at the portions where the divided lid bodies abut each other, and the interior and exterior of the floor opening can be completely shielded.

Furthermore, since the weight of each split lid is supported by the shoulders, and the direction of deflection of the airtight material is set perpendicular to the direction of gravity of the split lid, excessive flexure occurs in both the sealing material and the airtight material. without letting
The sealing effect can be exhibited over a long period of time.

Moreover, since the gap between the divided lid bodies is covered by pressing the tips of the airtight members against each other, a reliable sealing effect can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a part of a floor inspection port to which the seal structure according to the invention is applied, FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 3 is a cross-sectional view of the main part thereof. 1...floor surface, 2...floor opening, 3...outer frame, 4...
...Shoulder portion, 5...Inward flange portion, 7...Divided lid body, 9...Outward projecting edge, 12...Seal material, 13...
...Airtight material.

Claims (1)

[Scope of claim for utility model registration] An outer frame is attached to the opening edge of a floor opening opened in the floor surface, and a plurality of split lid bodies are removably fitted into the outer frame to open and close the floor opening. In the floor opening body, the upper part of the outer frame is formed with an inwardly protruding shoulder part, and the divided lid body is connected to an outward facing part formed on the upper part of the frame body of the divided lid body. The projecting edge is placed and held on the shoulder of the outer frame, and at the base end of the outward projecting edge at the portion where each divided lid body faces each other, the upper surface is placed along the lower surface of the outward projecting edge, and An airtight material whose tip part protrudes slightly outward from the outward flange is attached, and the airtight materials are pressed against each other to cover the gap between adjacent split lid bodies, and the lower end of the outer frame A sealing structure for a floor opening body, characterized in that a sealing material is interposed between the and the split lid body.