JP2517091Y2 - Frame frame for underground structure - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention mainly accommodates a water meter box and other meters and valves for water and sewerage, electric power, telecommunications installed underground. The present invention relates to a frame for an underground structure to be protected.

<Prior art> In a frame for a quadrilateral underground structure whose upper surface faces the ground surface, with respect to the lid main body that can openably and closably close the upper opening of the receiving frame, the lid main body can easily come off from the receiving frame. In addition, the opening of the receiving frame can be easily opened and closed by quickly tilting or rotating during meter reading, and the lid main body is frequently subjected to heavy loads by vehicles and pedestrians passing through the upper surface. It is desirable to protect the water meter by supporting it stably.

As an enclosure frame for an underground structure in which the lid main body is pivotally attached to this receiving frame, there is, for example, the one described in Japanese Utility Model Publication No. Sho 47-27955, and an enclosure for an underground structure supporting the lower edges of the four sides of the lid body. The body has a structure described in Japanese Utility Model Publication No. 58-41258, which has already been proposed by the present applicant.

In the above-mentioned conventional enclosure frame for underground structure, the former configuration is such that a pin is projected on the rear part of the left and right side surfaces of the opening part of the receiving frame, and the L-shaped engagement is made on the lower surface of the rear part of the left and right side surfaces of the lid body. This is a configuration in which one piece is provided. Further, the latter case frame for underground structure has a pair of pivot pins projecting from the inner surface of the open portion of the receiving frame, and a groove into which the pivot pin is fitted is formed on the side surface of the lid body. By making it horizontally long and gradually narrowing the groove toward the center to reduce it, when the lid body is rotated, the lid body will rotate in a lifted state. The rear edge of the rear can also be provided with a shelf.

<Problems to be Solved by the Invention> However, in the above-mentioned conventional housing frame, L
Since the letter-shaped engaging pieces are provided on the left and right side surfaces of the lid main body, the lid main body can be easily removed from the receiving frame, and the rear edge ledge is set so as not to hinder the rotation of the lid main body. Since it needs to be formed in a slanted shape, it is still not sufficient to reliably receive the lower surface of the rear edge of the lid main body on the pivot side, and when a large load is frequently applied to the upper surface of the lid main body, it is distorted or curved. In extreme cases, the lid body may fall inside the receiving frame.

Therefore, it is a quadrilateral receiving frame that protects water meters, etc., and it is a casing frame for underground structures that is configured to pivotally attach the lid main body along one side, and the lid position does not easily come off. There is a demand for a structure that can swivel quickly and that has a structure that sufficiently and firmly supports the lower surfaces of the four sides of the lid body.

<Means for Solving the Problems> The housing frame for an underground structure of the present invention has been proposed in response to the above-mentioned demand, and includes a quadrilateral receiving frame having an open portion on the upper surface and an opening of the receiving frame. In a casing frame for an underground structure, which comprises a lid main body that opens and closes the openable and closable part, pivot pins are provided on the left and right side rear portions inside the opening portion, and the rear left and right side portions of the lid main body are provided. Has a first recess and a second recess in which the pivot pin is loosely fitted, and one of the second recesses has an opening at the rear edge of the lid main body. It forms a communication part that can pass through. Further, according to the present invention, the first shelves for receiving the lower surfaces of the front edge and the left and right side edges of the lid body are provided on three inner sides of the opening portion of the receiving frame, and the opening portion serving as the pivot side of the lid body is provided. A second shelf portion for receiving an engaging portion formed on a lower surface of a rear edge of the lid main body on a pivot side of the lid body is provided, and the first shelf portion is positioned higher than the second shelf portion; When the lid is supported by the second shelf, the second shelf is slidably engaged and disengaged when rotated, and at least the second shelf of the first shelf and the second shelf is used. The section also includes a configuration in which notch portions for sand removal that slope downward are provided at appropriate intervals.

<Example> Hereinafter, the present invention will be described in detail based on an example of the drawings.

The substructure frame 1 for an underground structure of the present invention comprises a receiving frame 2 having an open upper surface, and a lid body 3 pivotally supported so as to openably and closably close the open upper surface of the receiving frame 2.

The receiving frame 2 is in the shape of a quadrangular hollow frame, has an open portion 4 on the upper surface, and the front edge and the left and right sides of the lid body 3 are provided on the inner side of the open portion 4 on the front side and the left and right side surfaces. First shelf 5 is provided to receive the lower surface of the edge.

The above-mentioned first shelf 5 does not exist in the portion located at the rear of the left and right side surfaces, but the pivot pins 6, 6 are provided so as to face the inside of the receiving frame 2.

The above-described pivot pin 6 is a laterally-cylindrical columnar part of which is obliquely downward.

Further, a second shelf 7 is provided at a position lower than the first shelf 5 on the rear surface side inside the opening 4 of the receiving frame 2 described above. The second shelf 7 is not provided in the entire width of the opening 4, but both ends thereof are shorter than the opening 4, so that the space 8 is formed on the front side of the pivot pin 6. The pivot pin 6 described above is attached to the space portion 8 described above.
It is located in a short protruding position.

It should be noted that the first shelves 5 and the second shelves 7 are formed with sand cutouts 9 ... Which are inclined downward at appropriate intervals to prevent sand or pebbles from accumulating on the upper surfaces of the shelves. do it,
The lower surface of the lid body 3 is securely supported, and when the lid body is opened and closed, biting is prevented so that the lid body 3 can be smoothly opened and closed.

Further, on the outer surfaces of the four sides of the receiving frame 2, at least a first recess 10 that can be pressed into the ground to prevent sinking by being buried in the ground, and a second upper end extending to the upper edge of the receiving frame 2
The recess 11 is provided so as to bulge inside the receiving frame 2.

The lid body 3 has a quadrilateral shape that is fitted in the open portion 4 of the receiving frame 2, and the pivot pins 6 are attached to the rear portions of the left and right side surfaces.
A first recessed portion 12 and a second recessed portion 13 are formed which have a width and a vertical width larger than the diameter of the above and which allow the pivotal pin 6 to be loosely fitted therein.

The first recess 12 formed on one side of the lid body 3 described above has a slightly horizontally long circular shape, but the second recess 13 formed on the other side.
Has a slightly oblong circular shape, and has a communicating portion 14 that opens to the rear edge of the lid body 3.

Further, on the lower surface of the rear edge of the lid main body 3, there is provided an engaging portion 15 which extends slightly downward from the lower surface of the lid main body 3 and whose corners are edged in an arc shape along the length direction. .

Since the underground structure housing frame 1 of the present invention has the above-described configuration, the receiving frame 2 and the lid body 3 are individually molded of, for example, a hard synthetic resin. Then, in order to pivotally support the lid main body 3 in the open portion 4 of the receiving frame 2 in an openable and closable manner, as shown in FIG.
After loosely fitting 12 into one of the pivot pins 6 from diagonally above, the lid main body 3 is tilted so that the rear edge is along the rear edge of the opening 4, and the second recess 13 is attached to the other pivot pin 6. Then, the lid body 3 is tilted to allow the pivot pin 6 to pass through the communicating portion 14 and loosely fit into the second recess 13. Since both pivot pins 6 are fitted into the first recess 12 and the second recess 13 by such an operation, the lid main body 3
Is rotatably supported at the open portion 4 of the receiving frame 2.

In the closed state in which the lid body 3 is attached to the inside of the open portion 4 of the receiving frame 2, as shown by the solid line in FIG. 3, the lower surface of the three edges of the front edge and the left and right side edges is the first shelf portion. It is supported by 5.
Further, the engaging portion 15 on the lower surface of the rear edge of the lid body 3 is placed and held on the second shelf portion 7. Therefore, the lid body 3 is the receiving frame 2
On the other hand, since the four sides of the lower surface are supported, there is almost no possibility of warping or distortion even when a large load is applied to the upper surface of the lid body 3.

When the lid body 3 is vertically rotated from the above-described closed lid state, both pivot pins 6 are loosely fitted in the first recess 12 and the second recess 13, so that there is room for both pivot pins 6. The first concave portion 12 and the second concave portion 13 do not contact each other, and the corner portion of the rear edge of the lid body 3 descends along the inner surface of the receiving frame 2 on the pivot side, and the engaging portion 15 accordingly. Slides on the upper surface of the second shelf portion 7 (FIG. 4 (a)).

Further, when the lid main body 3 is rotated so as to gradually rise, the engaging portion 15 is disengaged from the front edge of the second shelf portion 7, so that both pivot pins 6 and the first concave portion 12 and the second concave portion 13 are formed. And the lid body 3 is in a state of being supported by both pivotally attached pins 6 (fourth
Figure (b). Then, when the lid body 3 reaches the substantially upright state, the lid body 3 comes to be supported by the second shelf portion 7, so that the both pivot pins 6 and the first recess portion 12 and the second recess portion 13 are separated from each other. When the lid body 3 is no longer in contact (FIG. 4 (c)) and the lid body 3 is further rotated, the rear surface of the lid body 3 is locked to the upper edge of the rear surface side of the opening portion 4, and both pivot pins 6 and Since the first hollow portion 12 and the second hollow portion 13 come into contact with each other again, the lid main body 3 is held in the open state with the open portion 4 largely opened (FIG. 4 (d)).

Further, when the lid main body 3 is rotated from the above-mentioned opened lid state to the closed lid state, the lid body 3 is supported by both pivot pins 6 while the lid body 3 is being rotated, and the engaging portion 15 has the second shelf. Since the slide portion 7 is slid from the front edge and placed on the upper surface, the engaging portion 15 is placed on the upper surface of the second shelf portion 7 in the closed state as described above.

Therefore, according to the present invention, since the lower surfaces of the four sides of the lid body 3 are supported by the first shelf portion 5 and the second shelf portion 7 of the receiving frame 2 in the closed state, it is stable and strong against the load on the upper surface. Further, the lid body 3 is raised, and the four sides of the lid body 3 are supported, and the lid body 3 can be pivoted in the vertical direction to open the lid.

When the lid main body 3 is removed from the opening 4 of the receiving frame 2, the reverse operation of the operation of attaching the lid main body 3 to the opening 4 may be performed.

Although the present invention has been described based on the embodiment of the drawings, the present invention is not limited to the above-described embodiment, and can be implemented in any way unless the configuration described in the claims for utility model registration is changed. be able to.

<Effects of the Invention> In short, according to the present invention, in a casing frame for an underground structure, which comprises a quadrilateral receiving frame having an open portion on the upper surface, and a lid body that opens and closes the opening portion of the receiving frame, Pivot pins are provided on the left and right side rear portions of the inside of the opening, and first and second recesses are formed on the left and right side faces of the lid body so that the pivot pins can be loosely fitted therein. And a communicating portion that is opened at the rear edge of the lid body and through which the pivot pin can pass is formed only in one of the second recesses. Therefore, when the lid main body is opened / closed, the lid main body cannot be easily removed from the receiving frame, so that not only is the opening / closing operation easy, but the lid main body is less likely to come off due to an erroneous operation. Also, for example, when the lid main body is pivotally attached to the receiving frame and transported to the installation site,
The lid body does not come off from the receiving frame due to vibration during transportation.

Moreover, the first shelf for receiving the lower surfaces of the front edge and the left and right side edges of the lid body is provided on the three inner sides of the opening portion of the receiving frame, and on the rear surface side of the opening portion that is the pivot side of the lid body, By providing the second shelf portion that receives the engaging portion formed on the lower surface of the rear edge of the lid body on the pivot side, since the four sides of the lower surface of the lid body are supported by the shelf portion of the receiving frame in the closed state, Even if a vehicle or a pedestrian load is frequently applied to the upper surface, it does not warp or distort, and there is no danger of the lid body falling into the inside of the receiving frame, so it can be used safely on the road surface.

Further, the engaging portion formed on the lower surface of the rear edge of the lid body on the pivot side is supported by the second shelf portion when the lid is closed, and slides on the upper surface of the second shelf portion when the lid body rotates to engage and disengage. Therefore, not only the lid body is more stable when the lid is closed, but also the opening and closing operation of the lid body is easy at the time of meter reading.

Furthermore, since at least the second shelf portion is provided with notch portions for slanting sand that are inclined downward at appropriate intervals, sand and pebbles are less likely to intervene in the shelf portion, and the engaging portion when opening and closing the lid body. Will smoothly slide on the upper surface of the second shelf portion, which can be smoothly opened and closed without any difficulty, which is of high practical value.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an exploded perspective view in which a receiving frame and a lid main body are separated, the receiving frame is seen obliquely from above and the lid main body is seen from obliquely below, and FIG. FIG. 3A shows a partially cutaway side view of the lid body separated from the upper and lower sides, FIG. 3 shows a partially cutaway side view of the lid body in a closed state, and FIGS. FIG. 5 is a plan view of a part of the lid main body in section, which is a vertical sectional side view. 1 is a frame for an underground structure, 2 is a receiving frame, 3 is a lid main body, 4 is an opening part, 5 is a first shelf part, 6 is a pivot pin, 7 is a second shelf part,
9 is a notch for removing sand, 12 is a first recess, 13 is a second recess, 15
Is an engaging part.

Claims (4)

(57) [Scope of utility model registration request] 1. A quadrilateral receiving frame having an open portion on its upper surface,
In a frame structure for an underground structure, which comprises a lid main body that opens and closes the opening of the receiving frame so as to be openable and closable, pivot pins are projectingly provided on rear left and right side surfaces inside the opening, and left and right of the lid main body. A first recess and a second recess for loosely fitting the pivoting pin with a margin are formed in the rear part of the side surface of one side, and one of the second recesses is opened at the rear edge of the lid main body. A frame for an underground structure that forms a communication part through which a pivot pin can pass. 2. A first shelf for receiving the lower surfaces of the front edge and left and right side edges of the lid main body is provided on three inner sides of the opening of the receiving frame, and the rear surface of the open portion on the pivot side of the lid main body. On the side,
The basement according to claim (1), wherein a second shelf for receiving the engaging portion formed on the lower surface of the rear edge of the lid main body on the pivot side is provided, and the first shelf is positioned higher than the second shelf. Enclosure frame for structures. 3. The engagement portion is supported by the second shelf portion when the lid is closed, and slides and disengages by sliding on the upper surface of the second shelf portion when rotating. The frame for the underground structure described in. 4. At least a second of the first shelf and the second shelf.
The enclosure frame for an underground structure according to claim (2) or (3), wherein notches for sand removal that slope downward are provided at appropriate intervals on the shelves.