JPS5920466Y2 - Underground facility lid device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of an underground facility cover device.

Conventionally, underground facilities such as manholes and water collection boxes have lids that are permanently attached to receiving frames via hinges, or anyone can easily iron them by simply lifting the hinge part of the lid vertically upward. There are some types in which the lid can be detached from the receiving frame, but because the lid and the receiving frame are assembled in advance, it requires a lot of labor for transportation and burying, and the construction is troublesome. Met.

Additionally, in the latter case, the installed lid may come off or be lost due to theft, creating an extremely dangerous situation for walking.

The object of the above invention is to eliminate the above-mentioned drawbacks and provide an underground facility lid device having a structure in which the lid can be removed from the receiving frame, but cannot be removed by a person who is not familiar with the structure.

In order to achieve the above object, the present invention has a lid attached to a rectangular receiving frame in a plan view at a distance of 180 degrees within a vertical plane through hinges near both ends of one side.
° In the underground facility lid device installed so as to be openable and closable, a corner receiving part protruding near both ends of the hinge mounting side inside the receiving frame is provided with an engagement hole through which the hinge fits; The hinge includes a vertical portion that is rotatably supported by the lid and hangs down vertically, and a retaining protrusion provided at the lower end of the vertical portion, and the hinge has a vertical portion that is rotatably supported by the lid and hangs vertically, and a retaining protrusion provided at the lower end of the vertical portion, and the hinge has When the hinge is in the position, the retaining protrusion of the hinge passes through the retaining hole from above to below, and then the corner holder is moved so that the lid is moved to one side in the left and right direction and is housed in the holder frame. The gist of the engagement hole is to have a portion sized to allow the passage of the hinge retaining protrusion, and a portion sized to block the passage of the hinge retaining protrusion and allow the vertical portion to pass.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIGS. 1 to 3, the water collection basin consists of a receiving frame 10 and a lid 20 detachably attached to the receiving frame 10 via a hinge 30.

The receiving frame 10 consists of a side frame 11 that is rectangular in plan view and a lid receiving part 12 provided on the inner surface side of the side frame 11.

The lid receiving portion 12 has a peripheral edge receiving portion 12a protruding from the inner surface of the side frame, and a corner receiving portion 12b at the left and right corner portions on the side where the hinge 30 supports the lid (lower side in FIG. 1). provided.

Locking holes 13 and 14 are provided in the both corner receiving portions 12 so as to pass through them in the upper and lower directions, respectively.

Then, one side (right side in Fig. 3) of these locking holes 1
3 is a rectangular hole having a long side 13a having a length M1 along the side edge of the lid pivot and a short side 13b having a width M2 in a direction perpendicular to the side edge, as shown in the figure.

Further, the hole 14 on the other side (left side in FIG. 3) has a long side 14a having a length N1 along the lid pivot side edge.
A wide hole portion 14 having a wide short side 14b with a width N2 on the 3rd side.
1, and a narrow short side 14 with a width N3 on the other end side via a step part.
The narrow hole portion 142 has a diameter of C.

Two receiving frame fixing portions 15 are provided on the outside of the side frame 11 on the lid pivot side and on the side opposite to the lid pivot.

The lid 20 consists of a main body 21 in the form of a flat plate with holes large enough to be inscribed inside the side frame 11 of the receiving frame 10, and the main body 21 is pivoted so as to be able to open and close outward by 18 degrees with respect to the receiving frame 10. be done.

At both ends of the main body 21 on the pivot side, long rectangular hinge attachment snots 22 are passed vertically and symmetrically from the pivot side edge toward the side opposite to the pivot.

Further, a finger hook 21 a is provided at the center of the opposite edge of the main body 21 .

In each of the hinge mounting slits 22, a hinge 30 having the same shape is pivotally supported by a pin 40 so as to be rotatable at least 180 degrees in a vertical plane.

That is, the hinge 30 has a Z-shaped steel shape when viewed from the side, and the pivot horizontal portion 31 facing outward on the pivot side is connected to the hinge mounting slit 2.
It has a horizontal top surface that is approximately equal to the snot shape of No. 2.

Further, the vertical portion 32 has a square shape with a diagonal length smaller than the short side length M2 of the front engagement 13 in its horizontal cross section.

Further, the horizontal length L of the hook-shaped horizontal portion 33 facing away from the pivot is set to be longer than the length of the short side M2 of the above-mentioned auspicious engagement hole 13 and shorter than the length of the long side M1.

Therefore, with respect to these hinges 30, the length N2 of the wide short side 14b of the other side hole 14 is greater than the length L of the hook-shaped horizontal portion 33, and the length N3 of the narrow short side 14C is The length L of the horizontal portion 33 is smaller than the length L of the horizontal portion 33.

Moreover, these hinge pairs are the above-mentioned - lucky example hole 13. Other side hole 1
4, it is movable within a predetermined range along its long side direction,
In addition, when the lid 20 is attached and the receiving frame 10 is closed, at least a portion of the other side hinge is in the narrow hole portion 14.
The distance between both hinges is determined so that the two hinges are engaged with each other.

Furthermore, the lid 20 is attached to the receiving frame 1 with reference to the closed state.
The receiving frame can be opened and closed by 180 degrees to the outside around the pin 40 via the hinge 30 fitted into the receiving frame.

Then, when the lid 20 is rotated 180° around the pin 40 to be opened and flung outward from the receiving frame, the hinge 30
However, the length of the vertical portion 32 of the hinge 30 is at least the same as when the hinge is pulled up when the surface of the lid 20 on the side opposite to the pivot is in contact with the ground (as shown by the imaginary line in FIG. 2). It is considered to be equivalent to a long time.

To attach the lid 20 to the receiving frame 10 having the above structure,
The hook-shaped horizontal portion 33 of the hinge on one side (the right side in FIG. 1) is supported by a pin on the lid body and hangs down when the lid body 21 is raised vertically.
The auspicious hinge is inserted into the hole 13 with its length direction aligned with the long side A1 of the auspicious hole 13.

Then, with the hinge on one side inserted into the auspicious hole 13, the lid body 21 is rotated 90 degrees in a horizontal plane, and the hinge on the other side is inserted through the wide hole portion 141 of the hole 14 on the other side.

Next, the entire lid body 21 is moved to the other side and properly set at a position where the lid body fits within the side frame 11 of the receiving frame 10.

In this state, the hook-shaped horizontal portion 33 of the other side hinge has moved below the narrow hole portion 142, so even if the lid main body 21 is pulled up, the horizontal portion 33 will move downward from the narrow hole portion 142.
, and is securely locked without coming off from the receiving frame 10.

When detaching, it can be easily done by reversing the above procedure.

In addition to the embodiments described above, the wide hole portion 141 and the narrow hole portion 142 may be arranged with the right and left sides reversed.

In this case, when attaching the lid main body 21 to the receiving frame 10, the other side hinge is inserted into the other side hole 14, and then the entire lid is moved to one side.

Since the underground facility lid device of the present invention is constructed as described above,
The work of burying and fixing the receiving frame can be carried out easily, and the receiving frame and lid can be transported individually.

In addition, the lid can be easily attached to the receiving frame, and once the lid is attached, it cannot be removed unless one is familiar with the structure, which prevents accidents such as theft or loss of the lid and causes traffic accidents. That's no longer the case.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line II-II in the figure, and a plan view of the main part of the receiving frame. 10... Receiving frame, 12... Lid support part, 1
2 b... Corner receiving part, 13... One side hole, 14... Other side hole, 141... Wide hole part, 142... ...Narrow hole part, 20...
- Lid, 30... Hinge, 31... Pivotal horizontal part, 32... Vertical part, 33... Hook-shaped horizontal part, 40... ···pin.

Claims (1)

[Scope of utility model registration request] In a lid device for an underground facility in which a lid is attached to a receiving frame that is rectangular in plan view near both ends of one side and can be opened and closed by 180 degrees in a vertical plane via a hinge, the hinge-mounted side is attached inside the receiving frame. Corner receivers protruding near both ends are provided with retaining holes through which the hinge passes, and the hinge includes a vertical portion that is rotatably supported by the lid and hangs vertically; a retaining protrusion provided at the lower end of the vertical portion; when the lid is located above the receiving frame, the retaining protrusion of the hinge passes through the engagement hole from above to below; In order for the lid to be moved to one side in the left-right direction and housed in the receiving frame, the retaining hole of the corner receiving part has a portion sized to allow the passage of the hinge retaining protrusion, and a portion sized to allow passage of the hinge retaining protrusion. What is claimed is: 1. An underground facility lid device characterized by having a portion sized to block said vertical portion and allow passage of said vertical portion.