JP7048409B2 - inspection door - Google Patents

Description

The present invention inspects, for example, an inspection port for inspecting wiring and piping under the floor, a machine hatch installed for carrying large equipment into an underground space, and electric wires buried in the ground of roads and sidewalks. Regarding various inspection ports such as inspection openings for.

In the present invention, a floor inside and outside a building, a road surface such as a road or a sidewalk, a place where an inspection port can be attached, and the like are simply referred to as a "floor". Therefore, the floor referred to in the present invention means all the attachment points of the inspection port (hatch) installed for inspecting the floor, the road surface and other internal wiring, piping, etc., or for carrying in the equipment.

Inside and around the building, floor hatches for inspecting wiring and piping under the floor, machine hatches installed for bringing large equipment underground, electric wires buried in the ground of roads and sidewalks Various hatches such as hatches for inspecting the equipment are often provided, and such hatches are often required to have a waterproof function in relation to the equipment to be inspected.

1, FIG. 2 and FIG. 3 show a hatch having a waterproof function, and FIG. 1 shows packings 4 and 5 on the receiving side edge and corner of the receiving frame 3 which is assembled on the floor 1 and where the lid 2 is mounted. Are arranged in two rows and double-sealed between the lid 2 and the receiving frame 3 so as to exhibit waterproof and deodorant functions (Patent Document 1).

FIG. 2 shows a partial cross section of the inspection port to which the lid 6 is attached, and FIG. 3 shows an enlarged cross section of the portion A of FIG. 2 before the lid 6 is attached. A packing storage portion 7a (see FIG. 3) is bent and formed on the storage portion 7a with a lid hook 7b, and the storage portion 7a is provided with a packing 9 having an angled cross section including a horizontal portion 9a and a vertical portion 9b, and the vertical portion 9b is a receiving frame 7. An example is shown in which the lid 6 is mounted so as to protrude upward from the gap 10 between the lid hook 7b. When the lid 6 is mounted, the vertical portion 9b of the packing 9 is pushed into the storage portion 7a, and the lid 6 is mounted. It is supported by the lid hook 7b (Patent Document 2).

Japanese Unexamined Patent Publication No. 9-151475 Japanese Unexamined Patent Publication No. 2018-16936

In the hatch shown in FIG. 1, not only the packing 3 but also the packing 4 is installed so as to project from the rising portion 7d of the receiving frame side edge, so that the weight of the lid 1 is received by the packings 3 and 4. Therefore, the packings 3 and 4 are greatly compressed, and the restoring force of the packing tends to decrease, leading to early deterioration, and the waterproof function tends to decrease.

In the hatch shown in FIGS. 2 and 3, an excessive stress is generated in the portion 9b protruding from the gap 10 of the packing 9, the restoring force of the portion is reduced, which easily leads to deterioration, and the lid hook 7b is provided. The structure of the receiving portion 7a including the receiving portion 7a becomes complicated, and there is a problem in workability at the time of mounting by inserting the packing 9 into the storage portion 8.

The present invention has been made to solve the above-mentioned problems, and is an inspection in which the durability of the packing is improved so that the waterproof function can be maintained for a long period of time, and the workability at the time of packing is improved. The purpose is to provide a mouth.

According to the first aspect of the present invention, a receiving frame having a sideways receiving portion, which is assembled on the floor, a lid mounted on the receiving frame, and the lid interposed between the lid and the receiving portion of the receiving frame, and said the lid. By being fixed to or attached to the receiving portion to support the lid, or by being attached to the lid and landing on the receiving portion at an inspection port made of a packing capable of elastically supporting the lid. The packing having a raising material for supporting the lid on the receiving portion and interposed between the receiving portion and the lid is stacked under the inlay provided on the upper side of the packing , or said . It is stacked on a pedestal provided on the upper side of the receiving portion, and the vertical thickness B of the inlay or the pedestal is smaller than the vertical thickness C of the raised material, and the packing and the inlay or The vertical thickness A of both the packing and the pedestal is larger than the vertical thickness C of the raised member (A>C> B) .

The invention according to claim 2 comprises a receiving frame having a sideways receiving portion assembled on the floor, a lid attached to the receiving frame, and the lid interposed between the lid and the receiving portion of the receiving frame. By being fixed to or attached to the receiving portion to support the lid, or by being attached to the lid and landing on the receiving portion at an inspection port made of a packing capable of elastically supporting the lid. A raising material for supporting the lid is provided on the receiving portion, and the packing is provided on the receiving portion or a member of the lid opposite to the member on which the raising material is provided, and the receiving portion is provided. It is characterized in that it is interposed between the lid and the lid and directly hits the lid, and the thickness of the packing in the vertical direction is larger than the thickness of the bulking material in the vertical direction .

When the lid is attached to the receiving frame, the packing of the invention according to claim 1 receives the weight of both the lid and the inlay or the weight of the lid, whereby uniform stress is applied to the entire cross section and the packing is uniformly compressed. When the lid is supported by the bulking material on the receiving portion, or when the bulking material attached to the lid lands on the receiving portion of the receiving frame, further compression is prevented, and the compression stops at a certain amount to receive the receiving portion. It comes to seal between the lid and the insole. As described above, the packing of the present invention is compressed by a certain amount when the lid is attached, but when the lid is placed on the bulking material or the raised material of the lid is placed on the receiving portion, further compression is prevented. And since the packing alone does not support the entire weight of the lid or the lid and the inlay, deterioration is improved and durability is improved, the packing is between the receiving part and the inlay, or the lid and the pedestal. Since it is only necessary to intervene between the and, the structure and the mounting structure can be easily made, and at the time of mounting, it is only necessary to place it on the receiving portion or the pedestal, so that it has an effect of good workability.

In the invention according to claim 2, the packing directly hits the lid to support the lid, but when compressed by a certain amount, the lid hits the bulking material or the bulking material lands on the receiving portion. Packing compression is stopped in the same way. As a result, as described above, the deterioration of the packing is improved and the durability is improved. Since the packing only needs to be interposed between the receiving part and the lid, the structure and the mounting structure can be easily made, and at the time of mounting. Since it is only necessary to place it on the receiving portion of the receiving frame, it has an effect that the workability at the time of packing is good.

Partial cross-sectional view of the inspection port of the conventional example. Partial cross-sectional view of the inspection port of another conventional example. FIG. 2 is an enlarged cross-sectional view of part A shown in FIG. A partial cross-sectional view of an inspection port according to the present embodiment before the lid is attached. Partial cross-sectional view of the inspection port after the lid is attached. Top view of the lid attached to the inspection port. Sectional drawing of the inspection port of another aspect.

Hereinafter, the inspection port according to the embodiment of the present invention will be described with reference to the drawings.

FIG. 4 shows a part of the inspection port before the lid is attached, FIG. 5 shows a part of the inspection port after the lid is attached, and FIG. 6 shows a lid made of grating attached to the inspection port. The inspection port is installed on the floor 1 shown in FIG. 1, for example, and has a rectangular receiving frame 11 and a rubber or resin compressible elastic packing 12 attached to the lower peripheral edge having a square vertical cross section. The receiving frame 11 is composed of a flat box-shaped inlay 13 and a lid 15 to which a raising member 14 is attached, and the receiving frame 11 is vertically formed by a rising portion 11a and a receiving portion 11b that bends inward and laterally from the lower end of the rising portion 11a. The surface is L-shaped.

The packing 12 is formed hollow or solid as shown, preferably in a cube having a rectangular vertical cross section. The shape other than the cube, for example, the cross section may be trapezoidal, elliptical, circular, etc., but when formed into a cube, it becomes difficult to fall and the stability at the time of mounting is improved, and when the lid is mounted, uniform stress is applied to the whole. It becomes easier to hang and the durability is further improved.
The packing 12 is also fixedly attached to the insole 13, but may be fixedly attached to the receiving portion 11b of the receiving frame 11 or may be simply interposed between the receiving frame and the lid without being fixed. ..

The lid 15 shown in FIG. 6 has a form in which a pair of gratings are arranged side by side, but may be composed of one grating, or a lid other than the grating, for example, a concrete lid or a meat. It may be made of thick plate-shaped metal or something like punching metal.

In the present embodiment, the lid 15 is first attached endlessly by wrapping the packing 12 around the peripheral edge of the receiving portion 11b of the receiving frame 11, preferably fixing, for example, fixing with an adhesive, and then on the packing of the four enclosures. Hang the insole 3 in the shape of a flat pan and attach it. After that, the bulking material 14 is attached to the lower surface side edge, and the lid 15 attached by welding is preferably attached in the receiving frame. With the attachment of the lid 15, the packing 12 is compressed via the insole 3. The packing 12 is compressed until the bulking material 14 lands on the receiving portion 11b, the lid 15 is supported on the receiving portion 11b via the bulking material 14, and the packing 12 is supported by the receiving portion 11b. It comes to seal between the insole 3.

Here, the thickness B of the insole 13, the thickness C of the bulking material 14, and the vertical thickness A of the packing 12 and the insole 13 are set in the relationship of A> C> B. Under this relationship, when the lid 15 is installed on the receiving portion 11b of the receiving frame 11 via the raising member 14 from the state of FIG. 4, and the raising member 14 is landed on the receiving portion 11b, A> C. As a result, the packing 12 is compressed by the insole 13 (FIG. 5). The compression of the packing 12 is stopped by the lid 15 being supported on the receiving portion 11b via the raising member 14, whereby the packing 12 is held in a state of being compressed by a certain amount.

In the above embodiment, the packing 12 is mounted on the receiving portion 11b, and the insole 3 is mounted on the receiving portion 11b. However, a raising pedestal is mounted on the receiving portion 11b, and the packing 12 is mounted on the pedestal. The lid 15 may be mounted directly on the packing so that the packing 12 directly supports the lid 15. In this case, the thickness of the packing 12 and the pedestal in the vertical direction is made larger than the thickness of the bulking material.

FIG. 7 shows an example of an embodiment in which the insole 13 of the embodiment is omitted. In this embodiment, the vertical thickness D of the packing 17 is set to the thickness C of the bulking material 14. Also in this embodiment, the compression of the packing 17 is performed until the raised material 14 lands on the receiving portion 11b of the receiving frame 11, and stops when the raised material 14 lands on the receiving portion 11b.

11 ... Receiving frame 11b ... Receiving part 12, 17 ... Packing 13 ... Insole 14 ... Bulking material 15 ... Lid

Claims (2)

A packing that is attached to the floor and has a receiving portion that faces sideways, a lid that is attached to the receiving frame, and a packing that is interposed between the lid and the receiving portion of the receiving frame and can elastically support the lid. In the inspection port consisting of
A bulking material is provided on the receiving portion to support the lid by being fixed to or attached to the receiving portion to support the lid, or by being attached to the lid and landing on the receiving portion. death,
The packing interposed between the receiving portion and the lid is stacked under an insole provided on the upper side of the packing , or stacked on a pedestal provided on the upper side of the receiving portion .
The vertical thickness B of the insole or the pedestal is smaller than the vertical thickness C of the raised material.
An inspection port characterized in that the vertical thickness A of both the packing and the insole or the packing and the pedestal is larger than the vertical thickness C of the bulking material (A>C> B) . .. A packing that is attached to the floor and has a receiving portion that faces sideways, a lid that is attached to the receiving frame, and a packing that is interposed between the lid and the receiving portion of the receiving frame and can elastically support the lid. In the inspection port consisting of
A bulking material is provided on the receiving portion to support the lid by being fixed to or attached to the receiving portion to support the lid, or by being attached to the lid and landing on the receiving portion. And
The packing is provided on the receiving portion or the member of the lid on the side opposite to the member on which the raising material is provided, and is interposed between the receiving portion and the lid to directly hit the lid.
An inspection port characterized in that the vertical thickness of the packing is larger than the vertical thickness of the bulking material.

Images