JPH08246543A - Mounting structure of grating - Google Patents

Abstract

PURPOSE: To provide the mounting structure of a grating, which can attach a grating easily and surely and besides is excellent both in work efficiency and in economic efficiency without needing bolts, etc. CONSTITUTION: The first projection 21 and the second projection projecting outward are made at both side plates 11 and 12, respectively, of a grating. The first cap 41 and second cap 42, which can accommodate the first projection 21 and the second projection rotatably, are made, respectively, in the positions corresponding to the first projection 21 and the second projection of both side plates 31 and 32 of a receiving frame. Bayonet sockets, into which the projections of the side plates 11 and 12 of the grating corresponding to the caps 41 and 42 can be inserted, are made at one case face each of the first cap 41 and the second cap 42, and the grating 10 is attached capably of opening and closing to the receiving frame buried in concrete.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a box cover, and more particularly to a structure for opening and closing the box cover on a receiving frame embedded in concrete.

[0002]

2. Description of the Related Art Conventionally, a box lid for covering a drainage and drainage section for sewage, rainwater, etc. provided in a gutter is composed of a frame plate formed in a predetermined lid shape and a crosspiece hung on the frame plate. It is attached to the receiving frame buried in the construction part such as concrete so that it can be opened and closed freely for inspection and cleaning.

FIG. 8 and FIG. 9 show a conventional example of such a mounting structure for a lid. In both figures, reference numeral 50 is a box lid, 51 is a frame plate of the box lid 50, and a crosspiece 52 (main member 52).
a and twist bar 53b) are formed in a lattice shape as shown in the figure. The receiving frame 53 is formed in a frame shape into which the box lid 50 can be fitted and removed, the receiving plate portion 54 receiving the box lid 50 on the lower surface, and the anchor portions 5 on both side outer surfaces.
5 are provided. The receiving frame 53 may be embedded in concrete or the like in advance. The box lid 50 is dropped into the receiving frame 53 and bolts 5 are attached on all sides.
It is fixed to the receiving frame 53 by 6 or the like. Reference numeral 57 is a screw hole into which the bolt 56 is screwed. At this time, as shown in the drawing, a notched portion 58 obtained by cutting off a part of the crosspiece 52 is required at the predetermined position of the frame plate 51 so that the fixing work by the bolt 56 such as insertion of a spanner or a bolt can be easily performed. Becomes

However, in such a structure, there is a walking problem such as the heel of a high heel being fitted in the cutout portion 58 of the crosspiece 52, and the cutout portion 58 is clogged with pebbles and dust. There was a problem that opening and closing work became difficult. Therefore, depending on the public organization that is the person in charge of enforcement, as shown in FIG. 9, it may be required to fit the cap 59 on the cutout portion 58. However, the mounting of the cap 59 as described above is not only disadvantageous in terms of cost and work, but also is not satisfactory in terms of effectiveness because it may be damaged or eventually come off and lose as it is used.

Therefore, in recent years, there has been proposed and implemented a structure in which a lid is rotatably attached to a receiving frame to open and close it. As an example, for example, Kaikaihei 6-71582
As shown in the publication, a first shaft hole and a second shaft hole are formed in the rear portions of both side plates of the lid, and a receiving frame has a fixing pin corresponding to the first shaft hole on one side plate thereof. By providing a movable pin projecting inward of the receiving frame and corresponding to the second shaft hole on the other side plate, a movable pin configured to be able to move in and out of the receiving frame by a spring housed in a spring receiving member,
The first shaft hole of the lid is fitted into the fixed pin, and then the second shaft hole is fitted into the movable pin.

According to the above structure, since the bolt is unnecessary, the cap or the like for it is also unnecessary.
Since it is necessary to provide the receiving frame with a movable pin that can be freely moved in and out of the receiving frame by a spring housed in a spring receiving member, the structure is complicated and there are problems in parts and manufacturing cost. In addition, since a protrusion is formed in the receiving frame for the spring and the spring receiving member that holds the movable pin freely in and out, a larger space for fixing the receiving frame to concrete is required.

[0007]

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and has a very simple structure to which a lid can be easily and surely attached, and a bolt can be attached. It is an object of the present invention to provide a mounting structure for a lid which is excellent in workability and cost efficiency and does not require the above.

[0008]

That is, the mounting structure of the box lid of the present invention is a structure in which the box lid is openably and closably attached to a receiving frame embedded in concrete, and rear portions of both side plates of the box lid. Has a first protrusion and a second protrusion protruding outward, respectively, and the first and second protrusions on both side plates of the receiving frame are provided at positions corresponding to the first and second protrusions.
A first holding cylinder portion and a second holding cylinder portion that can rotatably accommodate the protrusion and the second protrusion are formed, and at least the first holding cylinder portion and the second holding cylinder portion are formed. One of the holding cylinders has a cylindrical surface formed with an insertion notch into which the protrusion of the lid side plate corresponding to the holding cylinder can be inserted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an example of a mounting structure for a lid of the present invention, FIG. 2 is a sectional view showing a state in which the lid is attached to a receiving frame, a part of which is omitted, and FIG. 3 is a first holding tubular portion and a second holding portion. FIG. 4 is a perspective view showing the cylindrical portions side by side, FIG. 4 is a perspective view showing an example of the protrusion, FIG. 5 is a cross-sectional view with a part omitted showing the installation completion state of the box lid, and FIG. FIG. 7 is a sectional view showing a state in which the protrusion is completely inserted, and FIG. 7 is a sectional view showing a state in which the protrusion is completely inserted.

As shown in FIG. 1 and FIG.
0 is formed into a predetermined lid shape by the side plates 11 and 12, the front plate 13 and the rear plate 14, and a plurality of main members 15 are lined up and arranged inside thereof. Reference numeral 16 is a twist bar that reinforces the strength of the lid 10,
Is provided so as to be orthogonal to the bridging direction of the main member 15, and the surface of the box lid 10 has a lattice shape.

A first protrusion 21 and a second protrusion 22 are formed on the rear portions of the side plates 11 and 12 of the box lid 10, respectively. An example thereof is shown in FIG. This first protrusion 21,
The second protrusion 22 serves as a rotation shaft that opens and closes the box lid 10, and projects outward from the side plates 11 and 12. Such protrusions 21 and 22 can be easily formed by pressing the side plates 11 and 12 in advance. The shape of the protrusion is not particularly limited as long as it is rotatable, and may be a prismatic shape or a cylindrical shape having an appropriate width (or diameter) and height.

On the other hand, the receiving frame 30 is formed by a pair of side plates 31, 32, a front plate 33 and a rear plate (rear side of the box lid 10; not shown) into a frame shape into which the box lid 10 can be fitted and removed, as shown in FIG. It can be embedded in concrete C in advance. As a result, the concrete C is received by the receiving frame 3
It is possible to mount the box lid 10 after it is hardened as a unit with 0 and the curing is surely completed. Reference numeral 34 is a receiving plate portion that receives the lid 10, and 35 is an anchor portion.

In the receiving frame 30, a side plate 31 corresponding to one side plate 11 of the box lid 10 is provided with a first holding cylinder portion 41 at a position corresponding to the first protrusion 21 of the box lid 10. There is. The first holding cylinder portion 41 is provided so as to project inward from the side plate 31 of the receiving frame 30, and when the box lid 10 is attached to the receiving frame 30, the first protruding portion 21 is rotatably accommodated. Is able to.

Further, in the receiving frame 30, the box lid 1
On the side plate 32 corresponding to the other side plate 12 of 0, a second holding cylinder portion 42 is provided at a position corresponding to the second protruding portion 22 of the box lid 10 so as to protrude toward the inside of the receiving frame 30. ing. This second holding tubular portion 422 is also the first holding tubular portion 4
As in the case of 1, the second protrusion 32 can be rotatably accommodated. In the receiving frame 30 illustrated in FIG. 1, the tubular portion on the front side of the drawing is the first holding tubular portion 41, and the back side is the second holding tubular portion 42. As shown in FIG. 4, the first holding tubular portion 41 and the second holding tubular portion 42 respectively accommodate the first projecting portion 21 and the second projecting portion 22 rotatably when the mounting of the box lid 10 is completed. Then, it becomes a bearing for opening and closing the lid. The first holding tubular portion 41 and the second holding tubular portion 42 include the first protrusion 21 and the second holding tubular portion 42.
Each of the protrusions 22 has a diameter and a depth inside the cylinder that can be easily accommodated and can be sufficiently rotated inside.

In the present embodiment, the first holding cylinder portion 41
And the 2nd holding | maintenance cylinder part 42 consists of a bottomed cylinder member which has bottom plates 43 and 44, respectively, as shown in FIG. Then, as understood from FIG. 2, in the side plates 31 and 32 of the receiving frame 30, at the positions where the first holding tubular portion 41 and the second holding tubular portion 42 are formed, the holding tubular portion mounting hole portions 36 and 3 are formed.
7 is provided, and the tubular surfaces of the holding tubular portions 41 and 42 are connected to the side plate 3
Inserted from the outside of 1, 32 toward the inside of the receiving frame 30 and fixed by welding the bottom plate to the side plate.
In addition, the holding cylinders 41, 42 are connected to the side plates 31, 3 respectively.
Needless to say, the length of each holding cylinder portion is formed to be longer than the thickness of the side plate so that the holding cylinder portion can be projected from 2.

An insertion notch 45 is provided on at least one of the cylinder surfaces of the first holding cylinder portion 41 and the second holding cylinder portion 42 (the first holding cylinder portion 41 in this example). This insertion notch 45 is for inserting the protrusion (the first protrusion 21 in this embodiment) of the corresponding side plate when the box lid 10 is attached and for accommodating it in the cylindrical portion thereof. It is formed into an insertable shape. Further, in this embodiment, the insertion notch 45 is provided at an obliquely upper position of the cylindrical surface of the first holding cylindrical portion 41. Thereby, the receiving frame 30
It is possible to efficiently attach the box lid 10 from the upper side.

Next, a method of attaching the box lid 10 of the present invention will be described. First, as shown in FIG. 2, one side plate of the box lid 10 is fitted by accommodating the projecting portion in the holding cylinder portion in the receiving frame 30 previously embedded in the concrete C. The side plate is inserted into the receiving frame 30 and the notch 4 is formed.
5 is fitted first from the side plate corresponding to the holding cylinder part on which one is not formed, and in this example, the second protrusion 22 of the side plate 12 is the second
It is inserted into the holding cylinder portion 42. Then, the first protrusion 21 provided at the rear portion of the side plate 11 is inserted and accommodated in the first holding cylinder portion 41 provided on the other side plate 31 of the receiving frame 30. At that time, as shown in FIG.
1 is inserted and accommodated in the second holding tubular portion 41 via the insertion notch 45. As a result, as understood from FIG. 5, the first protrusion 21 is attached to the first holding tubular portion 41 and the second protrusion 2
2 is surely inserted into the second holding tubular portion 42, and each holding tubular portion serves as a bearing for the protrusion, so that the lid 1
0 can be rotatably attached to the receiving frame 30.

Further, when the box lid 10 is attached to the receiving frame 30, as will be understood from FIG. 6, the box lid 10 is inserted from diagonally above the receiving frame 30. Therefore, as described above, if the insertion cutout 45 is provided at an obliquely upper position of the cylinder surface of the first holding cylinder portion 41, the insertion cutout 45 opens in the insertion direction of the protrusion 21. Therefore, the mounting of the box lid becomes easier and more reliable.

[0019]

As shown and described above, according to the mounting structure of the box lid of the present invention, the box lid can be freely opened and closed on the receiving frame with a very simple structure without requiring a special member such as a bolt or a spring. Can be installed. Therefore,
Since it is not necessary to provide a notch for a bolt in the lid and there is no risk of the heel of a shoe being fitted, preparation of a separate member such as a cap and its attaching work are not required, which is extremely economical. Further, since the spring and its receiving member are not necessary, it is extremely advantageous economically and in terms of mounting space.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a mounting structure for a lid of the present invention.

FIG. 2 is a cross-sectional view with a part omitted showing a state in which a box lid is attached to a receiving frame.

FIG. 3 is a perspective view showing a first holding cylinder part and a second holding cylinder part side by side.

FIG. 4 is a perspective view showing an example of a protrusion.

FIG. 5 is a cross-sectional view with a part omitted showing a state in which the lid is completely attached.

FIG. 6 is a cross-sectional view showing a state in which the protrusion is inserted into the insertion notch.

FIG. 7 is a cross-sectional view showing a state in which the protrusion is completely inserted.

FIG. 8 is a perspective view showing a general lid mounting structure.

FIG. 9 is a cross-sectional view showing another example.

[Explanation of symbols]

 10 Box Cover 11 Side Plate 12 Side Plate 21 First Projection 22 Second Projection 30 Receiving Frame 31 Side Plate 32 Side Plate 41 First Holding Cylindrical Section 42 Second Holding Cylindrical Section 45 Insert Notch

Claims (3)

[Claims] 1. A structure in which a box lid is openably and closably attached to a receiving frame embedded in concrete, and first and second projecting portions projecting outwardly at rear portions of both side plates of the box lid. Is formed, and the first protrusion and the second protrusion can be rotatably accommodated at positions corresponding to the first protrusion and the second protrusion on both side plates of the receiving frame. The first holding tubular portion and the second holding tubular portion are respectively formed, and the tubular surface of at least one of the first holding tubular portion and the second holding tubular portion corresponds to the holding tubular portion. A mounting structure for a lid, characterized in that an insertion notch into which the protrusion of the lid lid side plate can be inserted is formed. 2. The mounting structure for a lid according to claim 1, wherein the first holding tubular portion and the second holding tubular portion are constituted by bottomed tubular members that are inserted and fixed in holes of both side plates of the receiving frame. . 3. The box lid according to claim 1 or 2, wherein an insertion notch is formed at an obliquely upper position of a tubular surface of one of the first holding tubular portion and the second holding tubular portion. Mounting structure.