Cable storage container

Abstract

To provide a cable housing container which is surely positioned in a vertical direction with respect to an installation surface when installing a container main body on the installation surface via mortar easily adjusts a height in the case of construction, shortens a construction time and is capable of reducing displacement when disposing a plurality of container main bodies side by side, is capable of suppressing distortion when manufacturing the container main body.SOLUTION: A reactive force action surface 11a which is abutted to mortar M and upon which a reactive force from the mortar M acts when installing a container main body 10 on a predetermined installation surface S via the mortar M is formed in a bottom plate part 11 of the container main body 10. The reactive force action surface 11a is formed so as to extend in a continuous or intermittent manner with a width dimension W equal to or less than 20 mm by forming a recess 11b in the bottom plate part 11 in a portion of the bottom plate part 11 in which a thickness dimension T is equal to or more than 30 mm. An area of the reactive force action surface 11a is 50% or more as large as an area of a lower surface of the bottom plate part 11.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cable housing container for housing cables laid underground in a road.

Background Art

[0002] As a conventional cable housing container, there is known one having a bottom plate portion and a pair of side plate portions extending upward from both sides in the width direction of the bottom plate portion, and including a resin container body having an opening formed on the upper surface, and the container body is buried underground (see, for example, Patent Document 1).

[0003] The burial of the container body is generally performed by forming an installation surface for installing the container body by placing concrete in the excavated portion of the ground, positioning it by installing it on the formed installation surface via mortar, and then filling the surroundings with sand or gravel.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] A conventional container body is formed by pouring a resin material into a mold such as injection molding and solidifying it. Therefore, in order to prevent distortion, it is necessary to make the thickness dimension uniform throughout the conventional container body, and in order to improve the strength, it is necessary to form ribs on the outer surface side.

[0006] Therefore, the conventional container body has few flat surfaces on the lower surface side, and when installed on the installation surface via mortar, the mortar laid on the installation surface enters the gaps on the lower surface side, making it difficult to adjust the height during construction, and there is a risk of height deviation when arranging a plurality of container bodies side by side.

[0007] An object of the present invention is to surely perform vertical positioning with respect to an installation surface when installing a container body on the installation surface via mortar, to facilitate height adjustment during construction, to shorten the construction time, to reduce displacement when arranging a plurality of container bodies, and to provide a cable storage container capable of suppressing distortion during manufacture of the container body.

Means for Solving the Problems

[0008] The cable storage container according to the present invention includes a bottom plate portion and a pair of side plate portions extending upward from both sides in the width direction of the bottom plate portion, and includes a resin container body having an opening formed on the upper surface, and the container body is a cable storage container buried in the ground. On the bottom plate portion of the container body, when the container body is installed on a predetermined installation surface via mortar, a reaction force acting surface that abuts against the mortar and receives a reaction force from the mortar is formed. The reaction force acting surface is formed to continuously or intermittently extend with a width dimension of 20 mm or less by forming a concave portion in the bottom plate portion in a portion where the thickness dimension of the bottom plate portion is 30 mm or more, and the area of the reaction force acting surface is 50% or more of the area of the lower surface of the bottom plate portion.

[0009] Further, in the cable storage container according to the present invention, the reaction force acting surface has a width dimension of 10 mm or more in a portion where the thickness dimension of the bottom plate portion is 30 mm or more.

[0010] Further, in the cable storage container according to the present invention, the reaction force acting surface is located between a plurality of the concave portions in a portion where the thickness dimension of the bottom plate portion is 30 mm or more.

[0011] Further, in the cable storage container according to the present invention, the concave portion has a circular shape, a triangular shape, a quadrangular shape, or a hexagonal shape.

[0012] Further, in the cable storage container according to the present invention, the concave portion has a depth dimension of 20 mm or more from the reaction force acting surface.

Effects of the Invention

[0013] According to the present invention, when installing the container body on the installation surface via mortar, by applying the reaction force from the mortar to the reaction force acting surface, it becomes possible to surely perform the vertical positioning with respect to the installation surface. Therefore, the height adjustment during construction is easy, the construction time can be shortened, and the displacement can be reduced when arranging a plurality of container bodies. Since the recess is formed in the bottom plate portion such that the width dimension of the reaction force acting surface located in the portion where the thickness dimension of the bottom plate portion is 30 mm or more is 20 mm or less, it is possible to suppress the distortion during the molding of the container body.

Brief Description of Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0015] FIGS. 1 to 5 show an embodiment of the present invention. FIG. 1 is a schematic view of a cable storage container according to the present invention, FIG. 2 is a cross-sectional view of a cable storage container according to the present invention, FIG. 3 is a perspective view of a main part on the lower surface side of a container body according to the present invention, FIG. 4 is a perspective view of a main part on the lower surface side of a conventional container body, and FIG. 5 is a table comparing the container body according to the present invention with a conventional container body.

[0016] The cable storage container 1 of this embodiment is for storing a plurality of cables 2 such as power transmission lines or distribution lines that send power supplied from a power plant to each demand facility, and communication lines that send signals transmitted and received between a plurality of wireless base station devices and an exchange station. As shown in FIGS. 1 and 2, the cable storage container 1 is buried in an asphalt-paved road where vehicles and pedestrians pass so that its upper surface is flush with the road surface G.

[0017] As shown in FIGS. 1 and 2, the cable storage container 1 has a container body 10 with a U-shaped cross section and an opening 10a formed on the upper surface, and a lid body 20 that closes the opening 10a of the container body 10.

[0018] The container body 10 is made of a recycled resin member containing, for example, polyethylene, polypropylene, etc., and is formed by, for example, injection molding. The container body 10 has a bottom plate portion 11 formed in a rectangular plate shape, and a pair of side plate portions 12 extending upward from both ends in the width direction of the bottom plate portion 11. The portion surrounded by the bottom plate portion 11 and the pair of side plate portions 12 becomes a storage space 10b for storing the cable 2. As shown in FIG. 3, the container body 10 is provided with connecting portions 13 at both ends in the longitudinal direction, and by connecting the connecting portions 13 to the connecting portions 13 of other container bodies 10 via an adapter (not shown), it is possible to continuously form the storage space 10b.

[0019] The bottom plate portion 11 has a thickness dimension T of the connecting portion 13 less than 30 mm (for example, 10 mm), and a thickness dimension T of the portion other than the connecting portion 13 of 30 mm or more (for example, 30 mm). Further, as shown in FIGS. 2 and 3, on the lower surface of the bottom plate portion 11, when the container body 10 is installed on a predetermined installation surface S via mortar M, a reaction force acting surface 11a that abuts against the mortar M and receives a reaction force from the mortar M is formed entirely.

[0020] The reaction force acting surface 11a is formed by forming a concave portion 11b in the bottom plate portion 11 at a portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more (a portion other than the connecting portion 13 of the bottom plate portion 11) so as to continuously extend with a width dimension W of 10 mm or more and 20 mm or less. The area of the reaction force acting surface 11a is formed to be 50% or more and 80% or less of the entire area of the lower surface of the bottom plate portion 11. Further, the concave portion 11b has a depth dimension H of 20 mm or more from the reaction force acting surface 11a. Here, the reaction force acting surface 11a extending with a width dimension W of 10 mm or more and 20 mm or less may be formed over the entire lower surface of the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more. For example, a plurality of reaction force acting surfaces 11a that are intermittently extended and divided by concave portions with a width dimension W of 20 mm or less may be formed on the lower surface of the bottom plate portion 11.

[0021] The reaction force acting surface 11a of the present embodiment is located between a plurality of concave portions 11b.

[0022] As the concave portion 11b, a circular shape shown in FIG. 3(a), a rectangular shape shown in FIG. 3(b), a triangular shape shown in FIG. 3(c), and a hexagonal shape shown in FIG. 3(d) are conceivable.

[0023] The lid body 20 is made of a resin rectangular plate-like member. As shown in FIGS. 1 and 2, the lid body 20 is formed such that the size in the longitudinal direction is the same as the size in the longitudinal direction of the container body 10, and the sizes in the width direction and the thickness direction are formed to be of a size that can be accommodated in a lid body accommodating portion 12a provided at the upper portions of the pair of side plate portions 12. The lid body 20 is detachably fixed to the container body 10 by a fastening member (not shown).

[0024] When installing the cable accommodating container 1 configured as described above, first, the soil at the installation location and its surroundings is excavated, and concrete is placed in the excavated portion to form an installation surface S having a flat upper surface.

[0025] Next, with the mortar M placed on the installation surface S, the container body 10 is installed. The container body 10 installed on the installation surface S has the reaction force acting surface 11a formed on the lower surface of the bottom plate portion 11 in contact with the mortar M. The self-weight of the container body 10 acts on the mortar M from the reaction force acting surface 11a, and a reaction force acts on the reaction force acting surface 11a from the mortar M. For this reason, the container body 10 installed on the installation surface S has its position in the horizontal and vertical directions adjusted before the mortar M hardens, and then its posture is maintained.

[0026] The container body 10 installed on the installation surface S and positioned is filled with sand and then gravel in that order around the container body 10, rolled using a rolling compaction device such as a tamper, and then asphalt paving is applied on top of the gravel to be buried.

[0027] Here, FIG. 4 is a perspective view of the main part on the lower surface side of a conventional container body 10' with a small area of the reaction force acting surface 11a'. FIG. 5 is a table comparing the conventional container body 10' with each of the container bodies 10 in which the recesses 11b formed in the reaction force acting surface 11a located in the portion where the thickness dimension T of the bottom plate portion 11 in the present embodiment is 30 mm or more are formed in a circular shape, a rectangular shape, a triangular shape, and a hexagonal shape.

[0028] The recess interval in the table of FIG. 5 indicates, for each of the container bodies 10 in the present embodiment, the interval between the recesses 11b (the width dimension W of the reaction force acting surface 11a located in the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more).

[0029] As shown in FIG. 5, for each of the container bodies 10 of the present embodiment, although the amount of material used is larger compared to the conventional container body 10', it can be seen that the area of the reaction force acting surface 11a is large and the ratio of the area of the reaction force acting surface 11a to the area of the lower surface of the bottom plate portion 11 is large. Thereby, for each of the container bodies 10 of the present embodiment, when installed on the installation surface S via the mortar M, positioning in the vertical direction is easier compared to the conventional container body 10'.

[0030] Further, as shown in FIG. 5, in each container body 10 of the present embodiment, when the recess interval is 20 mm, the area of the reaction force acting surface 11a is larger than that when the recess interval is 10 mm, and the ratio of the area of the reaction force acting surface 11a to the area of the lower surface of the bottom plate portion 11 becomes larger. However, in the container body 10 with a recess interval of 20 mm, since the width dimension W of the reaction force acting surface 11a located in the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more becomes larger, the distortion generated when molding by injection molding becomes larger, and it can be seen that the moldability is inferior compared to the container body 10 with a recess interval of 10 mm. Furthermore, in each container body 10 of the present embodiment, when the recess interval is 20 mm, it can be seen that the amount of material used is larger than that when the recess interval is 10 mm.

[0031] Therefore, in each container body 10 of the present embodiment, it can be seen that the container body 10 with a recess interval of 10 mm is superior to the container body 10 with a recess interval of 20 mm in terms of quality and manufacturing cost.

[0032] Furthermore, it can be seen that in each container body 10 with a recess interval of 10 mm in the present embodiment, from the viewpoint of the amount of resin material used, it is preferable that the shape of the recess 11b is a circular shape and a rectangular shape of the container body 10.

[0033] Thus, according to the cable housing container 1 of the present embodiment, it includes a resin container body 10 having a bottom plate portion 11 and a pair of side plate portions 12 extending upward from both sides in the width direction of the bottom plate portion 11, and an opening 10a is formed on the upper surface. The container body 10 is a cable housing container 1 buried in the ground. On the bottom plate portion 11 of the container body 10, when the container body 10 is installed on a predetermined installation surface S via mortar M, a reaction force acting surface 11a that abuts against the mortar M and receives the reaction force from the mortar M is formed. The reaction force acting surface 11a is formed to continuously or intermittently extend with a width dimension W of 20 mm or less by forming a recess 11b in the bottom plate portion 11 in the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more, and the area of the reaction force acting surface 11a is 50% or more of the area of the lower surface of the bottom plate portion 11.

[0034] Thus, when the container body 10 is installed on the installation surface S via the mortar M, by applying the reaction force from the mortar M to the reaction force acting surface 11a, it becomes possible to surely perform the vertical positioning with respect to the installation surface S. Therefore, the height adjustment during construction is easy, the construction time can be shortened, and the displacement can be reduced when arranging a plurality of container bodies 10. Since the recess 11b is formed in the bottom plate portion 11 such that the width dimension W of the reaction force acting surface 11a located in the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more is 20 mm or less, it becomes possible to suppress the distortion during the molding of the container body 10.

[0035] Further, it is preferable that the reaction force acting surface 11a has a width dimension W of 10 mm or more in the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more.

[0036] Thus, since it becomes possible to apply the reaction force from the mortar M to the reaction force acting surface 11a, it becomes possible to suppress the vertical displacement of the container body 10 installed on the installation surface S via the mortar M.

[0037] Further, it is preferable that the reaction force acting surface 11a is located between a plurality of recesses 11b in the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more.

[0038] Thus, since it becomes possible to arrange the reaction force acting surface 11a over the entire lower surface of the portion where the thickness dimension T of the bottom plate portion 11 is 30 mm or more, it becomes possible to more surely suppress the vertical displacement of the container body 10 installed on the installation surface S via the mortar M.

[0039] Further, it is preferable that the recess 11b has a circular shape, a triangular shape, a quadrangular shape, or a hexagonal shape.

[0040] Thus, by making the recess 11b have a simple shape, it becomes possible to suppress the manufacturing cost of the container body 10.

[0041] Further, it is preferable that the recessed portion 11b has a depth dimension H of 20 mm or more from the reaction force acting surface 11a.

[0042] As a result, the bottom plate portion 11 is reinforced by the portion located between the recessed portions 11b, so that the strength of the container body 10 can be improved.

[0043] In addition, in the above embodiment, the cable storage container buried in the asphalt-paved road is shown. However, as long as it is buried in the ground of the road surface where heavy objects such as vehicles pass, it is applicable to the cable storage container buried in the ground of the road surface without asphalt paving.

[0044] In addition, in the above embodiment, the container body 10 in which the connecting portion 13, which is a portion where the thickness dimension T of the bottom plate portion 11 is less than 30 mm, is provided on both ends in the longitudinal direction is shown, but it is not limited thereto. For example, in the case of a container body in which the entire thickness dimension of the bottom plate portion including the connecting portion is 30 mm or more, a recess may be formed over the entire lower surface side of the bottom plate portion, and the reaction force acting surface may be formed so as to continuously or intermittently extend with a width dimension of 20 mm or less. Further, regardless of the presence or absence of the connecting portion, in the case of a container body having a portion where the thickness dimension of the bottom plate portion is less than 30 mm, it is not necessary to form a reaction force acting surface extending with a width dimension of 20 mm or less in the portion where the thickness dimension of the bottom plate portion is less than 30 mm.

Explanation of reference numerals

[0045] 1 Cable storage container 10 Container body 10a Opening 11 Bottom plate portion 11a Reaction force acting surface 11b Recessed portion 12 Side plate portion S Installation surface M Mortar

Claims

1. A cable housing container, comprising a resin container body having a bottom plate portion and a pair of side plate portions extending upward from both sides in the width direction of the bottom plate portion, and having an opening formed on the upper surface, wherein the container body is buried in the ground. On the bottom plate portion of the container body, when the container body is installed on a predetermined installation surface via mortar, a reaction force acting surface is formed which abuts against the mortar and on which a reaction force from the mortar acts. The reaction force acting surface is formed so as to continuously or intermittently extend with a width dimension of 20 mm or less by forming a concave portion in the bottom plate portion at a portion where the thickness dimension of the bottom plate portion is 30 mm or more. The area of the reaction force acting surface is 50% or more of the area of the lower surface of the bottom plate portion. Cable housing container.

2. The reaction force acting surface has a width dimension of 10 mm or more at a portion where the thickness dimension of the bottom plate portion is 30 mm or more. The cable housing container according to Claim 1.

3. The reaction force acting surface is located between a plurality of the concave portions at a portion where the thickness dimension of the bottom plate portion is 30 mm or more. The cable housing container according to Claim 1 or 2.

4. The concave portion has a circular shape, a triangular shape, a quadrangular shape, or a hexagonal shape. The cable housing container according to Claim 3.

5. The concave portion has a depth dimension of 20 mm or more from the reaction force acting surface. The cable housing container according to any one of Claims 1 to 4.

Images