JPS594115Y2 - Inner frame of floor inspection port - Google Patents

Description

[Detailed description of the invention] This invention relates to a floor inspection port, and more specifically relates to the inner frame of the floor inspection port.

Conventionally, the inner frame of a floor inspection opening is constructed by cutting diagonally notches at both ends of the frame members that form the four peripheries of the inner frame of the floor inspection opening, and then framing the frame like a picture frame by welding means, etc., and attaching a separate cover plate to the inner frame. A frame was formed.

In addition, reinforcing ribs, reinforcing corrugated plates, etc. for reinforcing the inner frame are formed separately and attached between the cover plate or frame members by means of welding, etc. Therefore, forming the inner frame is extremely troublesome.
Further, there was a drawback that deformation and the like were likely to occur.

The present invention was devised in view of the above-mentioned conventional drawbacks, and provides an inner frame for a floor inspection port which has excellent strength by integrally forming the frame member of the inner frame and the cover plate, and which can be extremely easily constructed. The purpose is to

Next, the illustrated embodiment embodying the inner frame of the floor inspection port of the present invention will be described in detail. It is composed of a frame 6.

The outer frame 2 is formed by extruding a light alloy material such as aluminum and having an outer frame member 3 having a cross-sectional cross-section shaped like a cross-section. It is attached via an anchor member 5 or the like along the line.

Reference numeral 6 denotes an inner frame, and the inner frame 6 includes two base frame members 7 and 7'.
A framework is formed by combining.

This base frame member 7 is made by extrusion molding a light alloy material such as aluminum, and in its cross section, 8 is a lid portion provided horizontally, and vertical portions are provided on both edges of the lid portion 8. A side wall plate 9 is integrally formed, and a shallow groove portion 10 and a deep groove portion 11 are formed on both sides of the lid portion 8.

In addition, reinforcing ribs 12 having a hook-shaped cross section are arranged side by side at a predetermined interval on the surface of the lid 8 on the deep groove 11 side, and screw receptacles are provided at the corners of the reinforcing ribs 12 and the lid 8. 13 is formed along its longitudinal direction.

The base frame member 7 thus formed has a length L that allows it to be fitted into the outer frame 2, and both ends of the lid part 8 are connected to the side wall plates 9.
A considerable amount of the wall thickness has been cut out.

Further, since the base frame member 7' is formed to have the same cross section as the base frame member 7, a dash will be added to the number of each part and the explanation thereof will be omitted.

Further, this base frame member 7' is formed to have a dimension of L-2t) with respect to the length L of the base frame member 7.

The base frame members 7, 7' formed in this way have deep grooves 1
1.11' are opposed to each other, reinforcing ribs 12 and 12' intersect in a cross shape and abut against each other, and are connected to each other by screws via screw receivers 13 and 13' to form the inner frame 6.

The heights of the reinforcing ribs 12, 12' are such that when they come into contact with each other, the edges 14, 14' of the side wall plates 9, 9' are at the same level.

A flooring material 4A of the same type as the flooring material 4A, such as plastic tile, which is adhered to the upper surface of the floor surface 4, is adhered to the shallow groove portion 10 on the floor surface 4 side of the inner frame 6 formed as described above. It is fitted into the outer frame 2.

Next, the operation and effects of this embodiment configured as described above will be explained.

Now, the floor inspection port 1 of this example includes an outer frame 2 which is formed by framing an outer frame member 3 having a cross-sectional shape into a rectangular shape, and an inner frame 6 that fits inside the outer frame 2.
This inner frame 6 is composed of two base frame members 7, 7'.
The base frame members 7, 7' have side wall plates 9, 9' corresponding to the opposing rising pieces of the outer frame 2, and horizontal lid portions 8, 8' between the side wall plates 9, 9'. The lid parts 8, 8 are integrally provided.
' has a shallow groove part 10 on one side and a deep groove part 11.11' on the other side. A plurality of reinforcing ribs 12, 12' are protruded from the surface of both base frame members 7.
, 7' have deep groove portions 11 and 11' facing each other, and reinforcing ribs 12 and 12' are arranged in a cross-frame.

Therefore, the inner frame 6 of this example has its base frame members 7, 7' connected to the lid part 8,
8' and the side wall plates 9, 9' are integrally formed with an H-shaped cross section, eliminating the problem of the conventional lid plate etc. coming off.
Furthermore, since the base frame members 7, 7' are formed to have a medium cross-sectional shape and are integrally provided with reinforcing ribs 12, 12', the strength of the base frame members 7, 7' themselves is excellent. Since the members 7 and 7' are framed in a box shape with their deep grooves 11 and 11' facing each other and reinforcing ribs 12 and 12' crisscrossing each other, the structural strength is significantly increased. This allows it to perform its duties satisfactorily even when the pressure from pedestrians is high.

Further, since the side wall plates 9, 9' are framed with the deep groove portions 11, 11' of the base frame members 7, 7' facing each other via mutual screws 13, the frame construction can be carried out extremely labor-savingly.

In addition, the base frame members 7 and 7' are extruded long pieces of light alloy material such as aluminum and cut to a predetermined length to fit inside the outer frame 1, so they can be mass-produced economically. It has many features such as having a strong personality.

In the above embodiment, a plurality of reinforcing ribs 12, 12' are provided protruding from the flat lid portions 8, 8'. It may also have a structural shape in which a reinforcing convex portion 17 having a substantially U-shaped cross section is formed.

In addition, 18 is a side wall plate, 19 is a shallow groove part, 20 is a deep groove part, 2
1 is a screw receiver.

The present invention is a floor inspection port consisting of an outer frame made of a rectangular outer frame member having a cross-sectional shape, and an inner frame that fits inside the outer frame, and the inner frame is made of two bases. The base frame member is composed of a side wall plate corresponding to the rising piece of the opposing outer frame member of the outer frame, and a horizontal lid part is integrally provided between the side wall plates, and one of the lid parts is provided with a horizontal lid part. Formed in a cross-sectional shape having a shallow groove on one side and a deep groove on the other side,
A plurality of reinforcing ribs are protruded from the surface of the deep groove of the lid, and both base frame members have the deep groove facing each other, and the reinforcing ribs are framed in an intersecting manner. In addition to eliminating the problem of the conventional lid plate coming off, the base frame member itself is formed into a roughly H-shaped cross section, and the lid part is provided with multiple reinforcing ribs, so it has extremely high strength. The inner frame is made up of two reinforcing members, their deep grooves facing each other, and the reinforcing ribs intersecting each other in a box-shape, so its structural strength is significantly increased and the pressure exerted by pedestrians on the ground is increased. It is possible to prevent deformation and perform the service even if the structure is large.

Further, since the base frame members face each other with their deep grooves and frame the side wall plates through mutual screw receivers, the frame construction can be carried out extremely labor-savingly.

In addition, the base frame member is made by extruding a long piece of light alloy material such as aluminum and cutting it into a predetermined length that fits inside the outer frame, making it economical to mass produce. This is an extremely practical idea for the inner frame of an inspection port.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of a floor inspection port, Fig. 2 is a perspective view of the inner frame, and Fig. 3 is a partially extracted longitudinal sectional view showing another aspect of the inner frame. It is. 1... Floor inspection port, 2... Outer frame, 3...
...Outer frame member, 6...Inner frame, 7.7', 1
5...Base frame member, 8.8', 16...
Lid part, 9, 9', 18...Side wall plate, 10.10
', 19...Shallow groove part, 11°11', 20...
...Deep groove, 12.12', 17...Reinforcement rib.

Claims (1)

[Scope of utility model registration request] A floor inspection port comprising an outer frame formed by framing an outer frame member having a cross-sectional shape into a rectangular shape, and an inner frame fitted into the outer frame, the inner frame consisting of two base frame members, The base frame member includes a side wall plate corresponding to the upright piece of the outer frame member facing the outer frame, and a horizontal lid portion integrally provided between the side wall plates, and a shallow lid portion on one side of the lid portion. The side base frame member has a groove and a deep groove on the other side, and is formed into a medium cross-sectional shape, and a plurality of reinforcing ribs are protruded from the surface of the deep groove of the lid. An inner frame for a floor inspection opening, characterized in that the deep grooves face each other and the reinforcing ribs are framed in a cross-like manner.