Lid, storage container and storage unit

Abstract

To provide a strength-reinforcing lid that can be used even when a container is installed in a vehicle traffic way without changing the height of the container, and a container and a housing unit including the lid.SOLUTION: A strength-reinforcing lid 1, which is used for a resin container 10, has a lid body 2, which constitutes an outer surface 11, and a lid reinforcing member 3, which is attached along an inner surface 21 of the lid body 2 and fixed to both ends 22a, 22b of the inner surface 21 at least in a width direction Y.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lid body used to close an opening of a storage container body that stores cables or the like, and to a storage container and a storage unit that include this lid body. [Background technology]

[0002] Efforts are underway to house communication and power cables, which were previously installed on utility poles, in cable housing containers and install them underground or within roads as utility trenches. Among these, utility trenches, which are constructed with cable housing containers with lids on the road surface and installed within roads, have the advantage that it is easier to lay cables inside the containers after installation, compared to utility trenches which are constructed with underground pipes.

[0003] Concrete and resin-made troughs are known as containers (troughs) capable of housing cables, etc. Among these, resin cable containers have the advantage of being lighter than concrete ones and easier to cut on-site.

[0004] On the other hand, since resin has a weaker mechanical strength than concrete, the lids of cable housing containers located on vehicle paths need to be thicker than those located on pedestrian paths in order to increase their mechanical strength. In particular, when a part of a cable housing container is located on a road straddling a vehicle path and a pedestrian path, it is expected that the thickness of only the lids of the cable housing containers located on the vehicle path will be thickened, or the thickness of all the lids of cable housing containers including those located on the pedestrian path will be thickened.

[0005] However, if the thickness of only the lid of the cable housing container located in the vehicle path is increased, the height positions of the top surfaces of the lids of the cable housing container located in the vehicle path and the lid of the cable housing container located in the pedestrian path will differ, resulting in a step, which may cause the lid to be damaged. In addition, if the cable housing container located in the vehicle path is buried by digging a deeper trench, it will take more work and time to bury the cable housing container. In addition, if the thickness of the lids of all the cable housing containers is increased, it will take more time to bury the cable housing containers, and the lids of the cable housing containers located in the pedestrian path will become thicker than necessary, which will lead to a problem of increased material costs.

[0006] Furthermore, as an example of using a concrete cable housing container and a resin cable housing container in combination, Patent Document 1 describes a cable housing unit in which a concrete trough and a resin trough are connected by a connecting trough having one end formed as a connecting portion with the concrete trough and the other end formed as a connecting portion with the resin (plastic) trough. This connecting trough is covered by a connecting lid, one end of which is connected to a concrete lid (trough cover) that covers the concrete trough, and the other end of which is connected to a resin lid that covers the resin trough. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Utility Model Application Publication No. 62-074443 Summary of the Invention [Problem to be solved by the invention]

[0008] The cable housing unit described in Patent Document 1 is for installing a concrete trough in a place with a high volume of pedestrians and motorcycles, and does not take into consideration the installation of a plastic trough in a vehicle's path. In addition, the height positions of the top surfaces of the concrete trough cover and the plastic trough cover are different, which is not desirable for pedestrians and vehicles to pass through. In addition, the cable housing unit described in Patent Document 1 requires the production of multiple troughs with different materials and shapes, which tends to increase manufacturing costs and is considered to be difficult to install.

[0009] Furthermore, such problems are not limited to cases where a cable is housed in a housing unit, but are also common to cases where other objects are housed in the housing unit.

[0010] The object of the present invention is to provide a lid body that can be reinforced in strength and can be used even when installed on a vehicle path without changing the height of the storage container, and a storage container and storage unit equipped with this lid body. [Means for solving the problem]

[0011] The present inventors conducted extensive research to solve the above-mentioned problems, and as a result, discovered that by attaching lid reinforcing members to at least both ends in the width direction along the inner surface of the lid body, the stress acting on the lid body is reduced, and thus the lid body is less likely to break, which led to the completion of the present invention.

[0012] That is, the gist of the present invention is as follows. (1) A resin-made storage container lid including a storage container body and a lid, the lid having a lid body constituting an upper surface, which is an outer surface of the storage container, and a lid reinforcing member attached along an inner surface of the lid body and fixed to at least both ends of the inner surface in the width direction, the lid reinforcing member being configured to accommodate a portion protruding from the inner surface of the lid body, the lid body and the lid reinforcing member being configured to be in close contact with each other, and the lid having an internal space below an opening at an upper end. doA lid body capable of being reinforced in strength, which is used to close the opening in a storage container body, wherein the lid body main body is made of a material having a compressive strength of 21 MPa or more, the lid body reinforcing member is made of a material stronger than the lid body, and further, a convex portion (rib) on the inner side of the lid body main body is accommodated in the accommodation portion of the lid body reinforcing member, so that when the lid body main body is subjected to a load applied downward from the top surface of the lid, the inner peripheral surface of the accommodation portion of the lid body reinforcing member restrains the outer peripheral surface (top and side surfaces) of the convex portion (rib) of the lid body, thereby making it possible to suppress bending deflection of the lid body. (2) A lid body as described in (1) above, wherein the lid body main body is made of a thermoplastic resin material or a recycled resin material, and the lid body reinforcing member is made of at least one material selected from the group consisting of engineering plastic material, fiber-reinforced plastic material, and metal material. (3) The lid according to (1) or (2) above, wherein the lid reinforcing member is made of a material having a tensile strength of 100 MPa or more. (4) A protrusion having a rib structure of the lid body that is accommodated in the lid body reinforcing member The inner surface of the lid body is divided into a triangular, square, or honeycomb shape. The lid body whose strength can be reinforced according to (3) above, characterized in that it has any one of the following configurations. (5) A resin-made storage container comprising a storage container body having an internal space and an open upper end, and a lid body used to close the opening of the storage container body, the storage container being configured to store a cable in the internal space, the lid body having a lid body main body constituting an upper surface which is an outer surface of the storage container, and a lid body reinforcing member attached along an inner surface of the lid body main body and fixed to both ends of the lid body main body in at least the width direction, the lid body reinforcing member being configured to store a portion protruding from the inner surface of the lid body main body, the lid body main body and the lid body reinforcing member being configured to be in close contact with each other, the lid body having an internal space below the opening at the upper end, and being used to close the opening of the storage container body which is buried so as to be located in a passageway where vehicles can pass, the lid body being configured to be 21 Ma storage container made of a material having a compressive strength of 100 Pa or more, the lid reinforcing member being made of a material stronger than the lid body, and further characterized in that a convex portion (rib) on the inner surface of the lid body is accommodated in an accommodation portion of the lid reinforcing member, so that when the lid body is subjected to a load applied downward from the top surface of the lid, the inner surface of the accommodation portion of the lid reinforcing member restrains the outer peripheral surface (top and side surfaces) of the convex portion (rib) of the lid body, thereby suppressing bending deflection of the lid body. (6) A storage unit formed by connecting a plurality of storage containers according to (5) above along the extension direction of the storage containers. (7) A method for forming a storage unit according to (6) above, characterized in that at least a portion of the storage unit includes a storage container using a lid body consisting only of the lid body main body. (8) A method for installing a storage unit as described in (6) above, characterized in that the storage unit is buried in a road so as to be located in a passageway where vehicles can pass. Effect of the Invention

[0013] According to the present invention, it is possible to provide a lid body that can be strengthened and used even when installed on a vehicle passageway without changing the height of the storage container, and a storage container and storage unit equipped with this lid body. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing the structure of a storage container equipped with a lid according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a view showing an example of the inner surface of the lid body of the embodiment according to the present invention. [Diagram 3] Figure 3 shows modified examples of the inner surface of the lid body of an embodiment according to the present invention, where Figure 3(a) shows an example in which the inner surface is divided into triangles, Figure 3(b) shows an example in which the inner surface is divided into squares, and Figure 3(c) shows an example in which the inner surface is divided into a honeycomb shape. [Figure 4]FIG. 4 is a conceptual diagram showing stresses that are applied when a load is applied to the lid of the embodiment according to the present invention. [Diagram 5] FIG. 5 is a conceptual diagram showing an example of a storage unit according to the present invention installed on a paved road. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Next, preferred embodiments of the present invention will be described below.

[0016] Fig. 1 is a perspective view showing the structure of a storage container equipped with a lid according to an embodiment of the present invention. Fig. 2 is a diagram showing an example of the inner surface of a lid body according to an embodiment of the present invention. Fig. 3 is a diagram showing modified examples of the inner surface of a lid body according to an embodiment of the present invention, with Fig. 3(a) showing an example where the inner surface is divided into triangles, Fig. 3(b) showing an example where the inner surface is divided into squares, and Fig. 3(c) showing an example where the inner surface is divided into a honeycomb shape. Fig. 4 shows the stress applied when a load is applied to the lid according to an embodiment of the present invention. concept FIG.

[0017] The lid body 1 according to the embodiment of the present invention is a lid body for a resin storage container (trough) 10, and as shown in FIG. 1, the lid body 1 has a lid body main body 2 constituting an outer surface 11, and a lid body reinforcing member 3 attached along an inner surface 21 of the lid body main body 2 and fixed to at least both ends 22a, 22b of the inner surface 21 in the width direction Y, and is capable of being reinforced in strength. Here, the width direction Y is the width direction when the lid body 1 is installed on the storage container main body 4 described later to configure the storage container 10, but before the lid body 1 is installed on the storage container main body 4, one of the short side direction and the long side direction of the lid body 1 can be the width direction Y. In this way, by attaching the lid body reinforcing member 3 attached along the inner surface 21 of the lid body main body 2 and fixed to at least both ends 22a, 22b of the inner surface 21 in the width direction Y, among the stresses applied to the lid body 1, the bending stress in particular is reduced, so that the lid body 1 is less likely to break. Therefore, the storage container 10 can be used even when installed on a vehicle passageway without changing the height of the storage container 10.

[0018] (Lid body) The lid body 2 of the lid body 1 constitutes the outer surface 11 of the storage container (trough) 10. More specifically, the lid body 2 constitutes the outer surface 11, typically the upper surface, when the openings at the upper ends 43, 43' of the storage container body 4 are closed with the lid body 1 to obtain the storage container 10. In other words, the lid body 2 is a portion on which the load of vehicles V, pedestrians P, and the like passing over the storage container 10 is directly applied.

[0019] The shape of the lid body main body 2 is not particularly limited as long as the lid body reinforcing member 3 described later can be attached. Therefore, the lid body main body 2 may be a general-purpose lid body for a cable housing container, and may have unevenness on the inner surface 21 facing the internal space H, as shown in FIG. 2. FIG. 2 shows a lid body main body 2 having a lattice-shaped protrusion (rib) 23 on the inner surface 21 as an example of a general-purpose lid body (lid body main body 2) for a cable housing container, which divides the inner surface 21 into a rectangle, and the lid body reinforcing member 3 described later can also be provided on such a lid body main body 2. In the lid body 1 of this embodiment, by providing unevenness on the inner surface 21 of the lid body main body 2, it is possible to improve the joining with the lid body reinforcing member 3 described later and to make it difficult for positional deviation to occur in the extension direction X or width direction Y of the storage container 10.

[0020] Here, as the lid body 2, a lid body 2A in which the inner surface 21A is divided into triangles by protrusions (ribs) 23 may be used as shown in Fig. 3(a). Alternatively, a lid body 2B in which the inner surface 21B is divided into squares by protrusions (ribs) 23 may be used as shown in Fig. 3(b). Alternatively, a lid body 2C in which the inner surface 21C is divided into a honeycomb shape by protrusions (ribs) 23 may be used as shown in Fig. 3(c).

[0021] The inner surface 21 of the lid body main body 2 is a surface that faces the internal space H when the storage container 10 is constructed, and is a surface that is located inside the portion that contacts the upper end portions 43, 43' of the storage container main body 4. Here, the portions of the lid body main body 2 that contact the upper end portions 43, 43' of the storage container main body 4 are often portions that are located at both ends of the lid body main body 2 and are configured to be thinner when combined with the lid body reinforcing member 3 described later. Therefore, both end portions 22a, 22b of the inner surface 21 of the lid body main body 2 in the width direction Y can be portions of the inner surface 21 that are inside the portions that become thinner.

[0022] The material of the lid body 2 is made of resin, and is preferably made of a thermoplastic resin material or a recycled resin material. Here, the thermoplastic resin material may be a material containing polyethylene, polypropylene, or the like. Also, the recycled resin material may be a resin material whose main raw material is recycled resin from waste resin, discarded cables, or the like. In this way, by making the lid body 2 out of resin, the lid body 1 becomes lighter, and therefore the lid body 1 can be easily carried when installing the storage container 10 or when performing maintenance work.

[0023] (Lid reinforcement member) The lid reinforcing member 3 provided on the lid 1 can reinforce the strength of the lid 1 by attaching it to the inner surface 21 of the lid body 2. More specifically, the lid reinforcing member 3 is attached along the inner surface 21 of the lid body 2, and fixed to at least both ends 22a, 22b of the inner surface 21 in the width direction Y. At this time, it is preferable that the protrusion 31 made of the lid reinforcing member 3 is configured to protrude from the lid body 2. By providing the lid reinforcing member 3 in this manner, part of the stress acting on the lid 1 from the outer surface 11 of the lid 1 is borne by the lid reinforcing member 3, so that the rigidity of the lid 1 as a whole is increased. Here, one of the causes of the lid 1 being damaged when a large load is applied to the lid 1 is thought to be excessive stress acting on the lid 1 from the outer surface 11, particularly bending stress. Therefore, in the storage container of this embodiment, part of the stress acting on the lid body 1 from the outer surface 11, particularly part of the bending stress, is borne by the lid body reinforcing member 3, thereby increasing the rigidity of the lid body 1 and making the lid body 1 less likely to break without changing the thickness of the lid body 1.

[0024] As shown in FIG. 4, when a load L is applied downward from the outer surface 11 of the lid body 1 to the lid body 1, the lid body 1 is subjected to two types of stresses, which are broadly classified as bending stress (a combination of compressive stress C and tensile stress P shown in FIG. 4) and shear stress S. Of these, bending stress is applied to the vicinity of the location of the lid body 1 where the load L is applied. In particular, when the load L is applied to the entire surface of the outer surface 11 of the lid body 1, bending stress is applied near the center of the outer surface 11 of the lid body 1. On the other hand, shear stress is applied to the vicinity of the portion of the lid body 1 that comes into contact with the upper ends 43, 43' of the storage-container body 4.

[0025] 1 and 4, when the width of the lid body 1 (the size of the lid body 1 along the width direction Y of the storage container 10) is greater than the thickness of the lid body 1 (the size of the lid body 1 along the height direction Z of the storage container 10), the bending stress is greater than the shear stress S, and therefore the bending stress in particular is the cause of damage to the lid body 1. Therefore, in the present invention, part of the stress acting on the lid body 1, more preferably part of the bending stress, is borne by the lid body reinforcing member 3, thereby making it difficult for the lid body 1 to be damaged.

[0026] The lid reinforcing member 3 is preferably made of a material stronger than the lid main body 2. This makes it more difficult for the lid main body 2 to break because the lid reinforcing member 3, which has high strength, bears part of the stress, making it more difficult for the lid main body 2 to break.

[0027] The material of the lid reinforcing member 3 is preferably at least one of engineering plastic material, fiber reinforced plastic (FRP) material, fiber cloth material, and metal material. Here, examples of the engineering plastic material include polyamide and polycarbonate. The lid reinforcing member 3 made of these materials is preferably made of at least one of the following materials: R composition and This increases the tensile stress P applied to the lid reinforcing member 3, making the lid 1 less likely to break. In particular, by configuring the lid main body 2 from a member with a large compressive stress C and configuring the lid reinforcing member 3 from a member with a large tensile stress P, it is possible to make the lid 1 less likely to break.

[0028] Moreover, the lid reinforcing member 3 is preferably made of a material having a tensile strength of 100 MPa or more. In this case, it is more preferable that the lid body 2 to which the lid reinforcing member 3 is attached is made of a material having a compressive strength of 20 MPa or more. This increases the compressive stress C in the lid body 2 on the outside of the lid 1, and also increases the tensile stress P applied to the lid reinforcing member 3 on the inside of the lid 1. Therefore, when a load L is applied from the outer surface 11 of the lid 1 to the inside, the bending stress applied by the load L is mitigated by the combination of these materials, making it possible to make the lid 1 less likely to break.

[0029] The lid reinforcing member 3 is preferably configured to accommodate the portion protruding from the inner surface 21 of the lid body 2, i.e., the protrusion (rib) 23 of the lid body 2. Since the lid reinforcing member 3 is made of a material stronger than the lid body 2, the lid reinforcing member 3 is less likely to deform than the lid body 2. The protrusion (rib) 23 of the lid body 2 is connected to the lid body reinforcing member 3 Storage compartment By Not only is the inner surface (top surface) of the protrusion (rib) 23 of the lid body 2 pressed by the lid body reinforcing member 3, but the side surface of the protrusion (rib) 23 of the lid body 2 is also pressed against the receiving portion of the lid body reinforcing member 3. By being sandwiched, the cover body 2 Convex part of and the cover reinforcing member 3 Add the width to the height Increased contact area As a result, deformation of the lid body 2 in both the height direction and the width direction is suppressed. Therefore, a part of the bending stress acting on the lid 1 can be easily borne by the lid reinforcing member 3, making it more difficult for the lid 1 to be damaged.

[0030] Moreover, it is preferable that the lid reinforcing member 3 is configured so that it can be additionally attached to the lid main body 2. This makes it possible to select whether or not to reinforce the strength of the lid 1, depending on whether or not the lid reinforcing member 3 is attached. This eliminates the need to manufacture storage containers 10 made of different materials or with different shapes, thereby reducing the manufacturing cost of the storage containers 10 to be installed and improving the ease of installation of the storage containers 10.

[0031] For example, when burying across locations where the load L applied to the lid body 1 is significantly different, such as a path 61 for vehicles V and a path 62 for pedestrians P, by configuring the lid body reinforcing member 3 to be detachable from the lid body main body 2, it is possible to reduce damage to the lid body 1 by using the lid body reinforcing member 3 in locations where the load L is large (for example, the path 61 for vehicles V). At the same time, in locations where the load L is small (for example, the path 62 for pedestrians P), the manufacturing cost of the storage container 10 can be reduced and the installation workability of the storage container 10 can be improved by closing the opening of the storage container main body 4 without using the lid body reinforcing member 3.

[0032] The lid reinforcing member 3 may be integrally formed with the lid body 2 made of a different material. In this case, the work of attaching the lid reinforcing member 3 to the lid body 2 when installing the storage container 10 can be eliminated.

[0033] Means for attaching the lid body reinforcing member 3 to the lid body main body 2 include means for forming an adhesive layer and heat fusing on the contact surfaces of the lid body main body 2 and the lid body reinforcing member 3, and means for fixing with a bolt or shrink fitting to a through hole connecting the lid body main body 2 and the lid body reinforcing member 3, and are not particularly limited.

[0034] (Container body) The lid 1 of this embodiment is a lid for a resin storage container (trough) 10. In particular, the lid 1 of this embodiment is preferably used to close an opening in a storage container body 4 that has an open upper end 43, 43' and an internal space H below the opening. Here, the storage container body 4 has an internal space H capable of accommodating a cable 5 or the like, and has open upper end 43, 43', and this opening is closed by the lid 1.

[0035] The storage container body 4 can be used as, but is not limited to, a container for storing cables 5 such as communication lines, low-voltage power lines, and high-voltage power lines in the internal space H. The storage container body 4 has, for example, a concave shape when viewed in a cross section perpendicular to the extension direction X.

[0036] The storage container body 4 has a bottom wall 41 and opposite side walls 42, 42' that extend upward from both ends of the bottom wall 41, and upper ends 43, 43' of the side walls 42, 42' are open, so that the storage container body 4 is formed like a so-called U-shaped groove. In this case, the groove-shaped space surrounded by the bottom wall 41 and the side walls 42, 42' becomes an internal space H, and the cable 5 or the like can be stored in this internal space H. By configuring the storage container body 4 in this way, it is possible to easily store contents such as the cable 5 when installing the storage container 10, and to easily perform maintenance of the storage container 10 and its contents.

[0037] Here, the bottom wall 41 of the storage container body 4 becomes the bottom surface of the storage container body 4. Moreover, both side walls 42, 42' of the storage container body 4 each constitute a side surface of the storage container body 4, and are formed of a plate-like wall rising from the bottom wall 41 and extending along the extension direction X. It is preferable that the both side walls 42, 42' are configured to face each other.

[0038] The material of the storage container body 4 is preferably made of a resin, and more preferably made of a flame-retardant resin. By making the storage container body 4 out of a resin, the storage container body 4 can be made lighter, and the storage container 10 can be easily carried when installing or digging up. In addition, since cutting on-site is easy, the storage container 10 can be easily installed in curved parts or parts with varying gradients.

[0039] (Containment Container) The storage container (trough) 10 includes the storage container body 4 and the lid 1. More specifically, the storage container body 4 has an internal space H and upper ends 43, 43' are open, and the lid 1 is used to close the opening of the storage container body 4. Here, the lid 1 is configured to include a resin lid body body 2 that constitutes the outer surface 11 of the lid body 1, and a lid reinforcing member 3 that is attached along an inner surface 21 of the lid body body 2 and is fixed to at least both ends 22a, 22b of the inner surface 21 in the width direction Y. In addition, the storage container 10 is preferably configured to accommodate a cable 5 in the internal space H.

[0040] As shown in FIG. 5, a plurality of storage containers 10 may be connected along the extension direction X of the storage container 10 to form a storage unit. Here, the plurality of storage containers 10 constituting the storage unit are configured so that the lid body 1 is at least one of the lid body 1 having the lid body reinforcing member 3 attached to the lid body main body 2 and the lid body 1 only constituting the lid body 1. This allows the lid body 1 having the lid body reinforcing member 3 attached and the lid body 1 consisting of only the lid body main body 2 to be used depending on the location where the plurality of storage containers 10 are installed. Therefore, in a location where the lid body 1 is likely to be damaged due to the passage of a vehicle V, the lid body reinforcing member 3 can be attached to reduce damage. At the same time, in a location where the vehicle V does not pass and the lid body 1 is unlikely to be damaged, the lid body 1 consisting of only the lid body main body 2 can be used to reduce the manufacturing cost of the storage container 10 and facilitate the installation of the storage unit.

[0041] 5, the multiple storage containers 10 are arranged at approximately right angles to the direction of travel of vehicles V and pedestrians P on the paved road 6, but this is not limited to this. The multiple storage containers 10 constituting a storage unit are continuously arranged so that their internal spaces communicate with each other along the extension direction X. Inside the multiple storage containers 10, an internal space H is formed that is an elongated cavity extending in the front-to-rear direction, i.e., in the extension direction X, and that is capable of storing long objects such as cables 5.

[0042] A plurality of storage containers 10 are buried in the ground surface G so that the outer surface 11 of the lid body 1 becomes a surface on which vehicles V and pedestrians P pass. Here, the ground surface G on which the storage containers 10 are buried is a surface on which vehicles V and pedestrians P pass, and examples of such surface include a road 60 that is a paved road or an unpaved road. Among these, examples of paved roads include a paved road having a pavement layer 63 mainly made of asphalt and a ground 64 mainly made of soil and located in the lower layer, as shown in FIG. 5. Here, an upper layer (not shown) mainly made of sand, stones, etc. may be present between the pavement layer 63 and the ground 64.

[0043] By configuring a storage unit by installing a plurality of storage containers 10 according to this embodiment on a road 60, it is possible to make the lid body 1 less likely to be damaged by the passage of a vehicle V without changing the height of the storage container 10. Therefore, the storage container 10 can be used even when installed on a path along which the vehicle V passes. In addition, since there is no need to use storage containers made of different materials or shapes, and the strength of the lid body 1 can be selected depending on whether or not the lid body reinforcing member 3 is attached, the manufacturing cost of the storage containers to be installed can be reduced and the installation workability of the storage containers can be improved.

[0044] Here, the storage unit is buried in the road so as to be located in the passage 61 of the vehicle V, the passage 62 of the pedestrian P, and both the passages of the vehicle V and the pedestrian P. It is preferable that the storage container 10 located in the passage 61 of the vehicle V uses the lid body 1 having the lid body reinforcing member 3 attached to the lid body main body 2, and the storage container 10A located in the passage 62 of the pedestrian P uses the lid body 1A having only the lid body main body 2. Thereby, the lid body 1 having the lid body reinforcing member 3 attached is used in the passage 61 of the vehicle V where the lid body 1 is likely to be damaged, and the lid body 1A having only the lid body main body 2 is used in the passage 62 of the pedestrian P where the lid body 1 is unlikely to be damaged. Therefore, the damage of the lid body 1 is reduced in the places where the lid body 1 is likely to be damaged, and the lid body 1A having only the lid body main body 2 is used in the places where the lid body 1 is unlikely to be damaged, thereby reducing the manufacturing cost of the storage containers 10 and 10A and improving the installation workability of the storage containers. EXAMPLES

[0045] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples.

[0046] (Example of the present invention) The storage container 10 of the present invention has the shape and structure shown in FIG. 1, and the lid 1 has a lid body 2 and a lid reinforcing member 3. Here, the storage container 10 has an internal space H capable of storing a cable 5, and the opening width of the upper end 43, 43' is 200 mm. The lid body 2 is made of a material having a compressive strength of 21 MPa, and the lid reinforcing member 3 is made of a material having a tensile strength of 21 MPa. The bending strength of the material constituting the lid body 2 and the lid reinforcing member 3 is 21 MPa. Among them, the lid body 2 is configured to close the opening of the upper end 43, 43', and is configured so that the thickness from the upper end 43, 43' of the storage container body 4 is 30 mm. Here, the lid body 2 does not have a protrusion (rib) 23 on the inner surface 21. On the other hand, the lid reinforcing member 3 was configured to have a width of 200 mm, the same as the opening width of the upper ends 43, 43', and a thickness of 25 mm. The lid reinforcing member 3 was attached along the inner surface 21 of the lid main body 2 so that the protrusion 31 made of the lid reinforcing member 3 protruded from the lid main body 2.

[0047] The bending stress and shear stress of the lid 1 were calculated using the beam strain calculation formula and Hooke's law when a load was applied from the outer surface 11 of the lid 1 so as to overlap the entire opening of the upper ends 43, 43'. As a result, the lid 1 used in the storage container 10 of the present invention had a bending stress of 7.0 MPa and a shear stress of 3.5 MPa, both of which were within the allowable range.

[0048] Comparative Example 1 The storage container of Comparative Example 1 was constructed with only the lid body without using a lid reinforcing member. The lid body was constructed so that the thickness from the upper end of the storage container body was 55 mm. Other than that, it was manufactured so as to have the same configuration as the storage container of the present invention. The lid used in the storage container of Comparative Example 1 had a bending stress of 23.0 MPa and a shear stress of 3.5 MPa, which was inferior in bending stress.

[0049] Comparative Example 2 The storage container of Comparative Example 2 was constructed with only the lid body without using a lid reinforcing member. Other than that, it was manufactured to have the same configuration as the storage container of the present invention. That is, the lid body has a thickness of 30 mm from the upper end of the storage container body. The lid used in the storage container of Comparative Example 2 had a bending stress of 7.0 MPa and a shear stress of 1.9 MPa, both of which were acceptable, but the shear stress value was smaller than necessary, and when the storage unit was constructed, the height position of the upper surface was different, resulting in a step. [Explanation of symbols]

[0050] 1, 1A lid body 10, 10A Storage Container 2 Lid body 21 Inner surface of the cover body 22 Both ends of the inner surface in the width direction 23 Rib 3 Lid reinforcement member 31 Protruding portion of lid reinforcing member 4. Storage container body 41 Bottom wall 42, 42' both side walls 43, 43' Upper end of the container body 5 Cable 6. Paved Road 60 road 61 Vehicle Traffic Routes 62 Pedestrian Paths 63 Pavement Layer 64 Ground L load C Compressive stress S tensile stress G ground surface P Pedestrian V Vehicle X: Extension direction of the container Y Width of container Z Height of container

Claims

1. A resin-made storage container lid including a storage container body and a lid, A lid body that constitutes an upper surface, which is an outer surface of the storage container; a lid reinforcing member attached along an inner surface of the lid body and fixed to at least both ends of the inner surface in the width direction; The lid reinforcing member is configured to receive a portion protruding from an inner surface of the lid body, The lid body and the lid reinforcing member are configured to be in close contact with each other, and The lid is used to close an opening in a container body having an internal space below an opening at an upper end thereof, The lid body is made of a material having a compressive strength of 21 MPa or more, The lid reinforcing member is made of a material having a higher strength than the lid body, Furthermore, the strength-reinforcing lid body is characterized in that, by accommodating a convex portion (rib) on the inner side of the lid body main body in the accommodation portion of the lid body reinforcing member, when the lid body main body is subjected to a load applied downward from the top surface of the lid body, the inner surface of the accommodation portion of the lid body reinforcing member restrains the outer peripheral surface (top and side surfaces) of the convex portion (rib) of the lid body main body, thereby suppressing bending deflection of the lid body main body.

2. The lid body is made of a thermoplastic resin material or a recycled resin material, The lid according to claim 1 , wherein the lid reinforcing member is made of at least one material selected from the group consisting of engineering plastic material, fiber-reinforced plastic material, and metal material.

3. The lid according to claim 1 or 2, wherein the lid reinforcing member is made of a material selected to have a tensile strength of 100 MPa or more.

4. The strength-reinforcing lid body according to claim 3, characterized in that the convex portion which is the rib structure of the lid body main body which is accommodated in the lid body reinforcing member is configured to divide the inner surface of the lid body main body into a triangular shape, a square shape, or a honeycomb shape.

5. A container body having an internal space and an open upper end; a lid body used to close the opening of the storage container body; A resin container comprising: The container is configured to accommodate a cable in the interior space, The lid body is A lid body that constitutes an upper surface, which is an outer surface of the storage container; a lid reinforcing member attached along an inner surface of the lid body and fixed to both ends of the lid body in at least a width direction; having The lid reinforcing member is configured to receive a portion protruding from an inner surface of the lid body, The lid body and the lid reinforcing member are configured to be in close contact with each other, and The lid body is used to close the opening of a storage container body that has an internal space below an opening at an upper end and is buried so as to be located in a passageway through which vehicles can pass, The lid body is made of a material having a compressive strength of 21 MPa or more, The lid reinforcing member is made of a material having a higher strength than the lid body, Furthermore, the storage container is characterized in that a convex portion (rib) on the inner surface of the lid body main body is accommodated in the accommodation portion of the lid body reinforcing member, so that when the lid body main body is subjected to a load applied downward from the top surface of the lid body, the inner surface of the accommodation portion of the lid body reinforcing member restrains the outer peripheral surface (top and side surfaces) of the convex portion (rib) of the lid body main body, thereby suppressing bending deflection of the lid body main body.

6. A storage unit formed by connecting a plurality of storage containers according to claim 5 along an extension direction of the storage containers.

7. 7. The method of claim 6, wherein the container unit comprises at least a portion of a container container using a lid body that is a lid body main body only.

8. 7. The method for installing a storage unit according to claim 6, further comprising the step of burying the storage unit in a road so as to be located in a passageway through which vehicles can pass.

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