JP3382013B2 - Pit for cable - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables a cable such as a cable for strong current, a cable for weak electricity or a cable for communication to be easily and conveniently arranged on the floor or on the bottom of a building. For cable pits (including cable ducts), in particular, separate cables for high-voltage, low-voltage, and communication cables can be separately routed, and the width and width of the cables can be increased as necessary to accommodate the types and storage of cables. The present invention relates to a cable pit whose volume can be increased and its height can be finely adjusted freely. 2. Description of the Related Art In a conventional cable pit of this type, a frame having a bottom surface and both side walls is formed by mortar or the like, and a cover plate is coated on the frame. Alternatively, a plastic gutter-shaped frame member having a U-shaped cross section is attached to the inside or on the floor of a building, and the opening of the gutter-shaped frame member is covered with a cover plate. [0003] However, in the above-mentioned cable pit, it has been difficult to separately store high-power, low-power, and electric power cables separately. In addition, in order to separately store these cables, a partition must be made of a brick or a plastic material in a frame body or a gutter-shaped frame material, which makes the operation complicated and costly. There was a problem. Further, there is a problem in that it is complicated to determine the level of the pits constructed and laid on the floor, and the work is difficult. The cable pit according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems, and in particular, a plurality of upwardly facing U-shaped pit members are increased or decreased as necessary to be arranged in parallel. By doing so, it is possible to divide each cable of strong electricity, weak electricity, and communication, and to increase or decrease the storage capacity of the cables.Furthermore, a plurality of pit materials are directly and firmly connected to each other, and The purpose of the present invention is to provide a completely new cable pit technology capable of easily and surely finely adjusting the level. [0005] The cable pit according to the present invention is a technique which fundamentally improves the above-mentioned conventional problems, and the gist of the invention is that the pits are provided on both sides of the bottom plate, respectively. It has a plurality of upward U-shaped pit members provided with plates and U-shaped joint fins on the lower bottom surface, and bolt insertion holes on both lower surfaces on both sides of a connection bar capable of fitting ends into the joint fins. It consists of a combination of anchor connection fittings, each of which is fitted with a bolt type B, and a plurality of adjacent upward U-shaped pit members are connected to each other by side plates, and the connection bars of the anchor connection fittings have a plurality of connection bars. It is laid on the lower bottom surface of the facing pit material and connected to each other, and furthermore, both ends of the connection bar are fitted and locked in joint fins of the facing pit material, respectively. Pit for cable It is. In the cable pit according to the present invention, a plurality of vertically upward U-shaped pit members are arranged in parallel on the left and right. Cables can be stored separately. In addition, by increasing the number of pit materials arranged in parallel, the width of the pits can be increased, thereby increasing the types of cables to be stored and increasing the storage capacity of the cables. Further, since the pit members are connected to each other via these side plates, each pit member can be integrally formed as one pit in a stable state. Further, the cable pit of the present invention uses an anchor connection fitting having an O-shaped bolt receiver having holes for bolt insertion on both lower surfaces of both sides of the connection bar, and a plurality of connection bars of the anchor connection fitting. Abuts on the lower bottom surface of the pit material and connects the connection bar to the bottom surface of each pit material, so that the lower bottom portion of each pit material is supported by the anchor connection metal, and through this anchor connection metal. Each pit material can be connected more firmly and integrally. Further, in the present invention, a U-shaped joint fin is provided on a bottom surface of each of the pit members, and both ends of a connection bar of the anchor connection fitting can be fitted into the joint fin. Therefore, the connection between the plurality of pit members and the anchor connection fitting can be further strengthened. FIG. 1 is a perspective view of one embodiment of a cable pit according to the present invention. FIG. FIG. 3 is a perspective explanatory view of a main part in a state where an additional pit material is inserted between the cable pits of FIG. 1 to increase the width of the pit. In FIG. 1, reference numerals 1 and 2 denote vertically upward U-shaped pit members, each of which is formed in an endless shape. Opposing outer side plates (outer plates) of the pit members 1 and 2 are respectively protruded above and below the inner side plates (inner plates), and a lid receiving flange is formed on the inner surface of the upper edge portion of these outer plates. 3 is formed so as to protrude horizontally, and a joint fin 4 having a U-shaped cross section is protruded from one end of the lower bottom surface of the pit members 1 and 2 toward the center of the bottom surface. Reference numeral 5 denotes a cover plate, and a back plate 6 and a finishing floor material 7 are laminated on each other, and edges 8 are integrally attached to both side edges of the back plate 6 and the finishing floor material 7. ing. The cover plate 5 includes pit materials 1 and 2
Can be covered with the opening of the pit formed. Further, the edge 8 of the cover plate 5 is configured to be placed on the cover receiving flange 3 of each of the pit members 1 and 2. The above-mentioned pit members 1 and 2 form a duct by connecting the respective inner plates to each other with an adhesive or by mutually tightening with screws, bolts or the like to integrally connect them. You can do it. The inside of each of the pit members 1 and 2 having the above-described structure enables waterproofing and dustproofing, and further, a weak electric cable, a strong electric cable, and the like can be separately stored in each of the pit members 1 and 2, respectively. In FIG. 2, reference numeral 9 denotes an additional pit material, which has a vertical U-shaped cross section in the same manner as the pit materials 1 and 2. Both side plates of the additional pit material 9 are formed to have the same height as the inner plates of the pit materials 1 and 2. This additional pit material 9 is inserted between the pit materials 1 and 2 and is arranged in parallel. The pit material 9 is formed by joining both side plates to the inner plates 1 of the pit materials 1 and 2 with an adhesive, or integrally connecting the screws by bolts or the like to form a pit. Can be done. Reference numeral 10 denotes an anchor connection fitting, which comprises a connection bar 11 and a Z-shaped bolt receiver 12. The connection bar 11 has a dimension that can be laid in the short axis direction on the bottom surface of each of the pit members 1, 2, and 9, and both ends thereof are
The pit members 1 and 2 are configured to be fitted and locked in the joint 4. The bolt receiver 12 is a connection bar 1
A hole 14 through which a bolt 13 can be inserted is fixed to the lower surface of both ends of the first member 1. The lower ends of the bolts 13 are anchor bolts 15 standing on the floor.
, And a nut 16 capable of tightening and fixing the bolt receiver 12 in the middle of the bolt 13. In the construction of the pits shown in FIG. 2 and the installation of the pits on the floor, a connection bar 11 of an anchor connection fitting 10 is laid on the lower bottom surface of each of the pit materials 1, 2, and 9, and each pit material 1, The bottoms of 2, 9 and the connection bar 11 are connected with screws, bolts or the like. Next, the both ends of the connection bar 11 are fitted and locked in the joint fins 4 of the pit members 1 and 2, and the bolt 13 is inserted into the hole 14 of the bolt receiver 12, and the lower end of the bolt 13 is connected to the floor surface. Anchor bolt 1 standing upright
Screw into 5. Thus, a wide pit can be formed by the pit members 1, 2, and 9 fixed in parallel, and the pit can be stably installed on the floor. When adjusting the pit level, a pair of nuts 16 holding the bolt receiver 12 from above and below are used.
Is moved up and down along the bolt 13 so that the pit height can be finely adjusted. The pit can be buried in the concrete floor by casting concrete around the pit thus installed. In the configuration of the pit according to the present invention,
As already described with reference to FIGS. 1 and 2, each pit material 1, 2
Alternatively, the pit members 1, 2, and 9 can be configured by joining them with the inner and outer plates, or stopping with screws, bolts, or the like. However, as described above, the pit members 1, 2, and 9 are connected via the connection bars 11, respectively. It can also be constituted by connecting these bottoms. Also, by using both means together, the entire pit can be more firmly constructed. In addition, both ends of the connection bar 11 are fitted and locked in the joint fins 4 so that the anchor connection fitting 1 can be fixed.
0 and the pit can be connected more firmly and stably. Further, as described above, the pit configured as described above can be used not only as a pit and buried in the floor, but also as a duct on a floor surface, a wall surface or a ceiling, and used widely. . Since the cable pit according to the present invention has the above-described structure and operation, it has the following great effects. (1) In the present invention, a plurality of pit members are connected in parallel to each other, and furthermore, a connection bar of an anchor connection fitting is laid on the bottom surface of each pit member. Since the pits are interconnected, the pits having partitions therein can be firmly and integrally formed. (2) Since the inside of the pit is divided by a partition, a high-current cable, a low-current cable, a communication cable, and the like can be stored separately. (3) By increasing the number of parallel pit members to form a wide pit, the types of cables to be stored and the amount of storage can be freely increased. (4) Accordingly, various cables can be stored separately in one pit. (5) Waterproofing and dustproofing in the pit can be facilitated. (6) In particular, when a metal pit material is used, an effect on radio wave shielding can be obtained. (7) Since the entire pit members are integrally connected to each other and via an anchor connection fitting, the floor finishing level of the pit can be finely adjusted easily and accurately.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory perspective view of a main part showing an example of a cable pit according to the present invention. FIG. 2 is an explanatory perspective view of a main part in a state where an additional pit material is inserted between the cable pits in FIG. 1 to increase the width of the pit. [Description of Signs] 1, 2 Pit material 3 Lid receiving flange 4 Joint fin 5 Lid plate 6 Back plate 7 Floor material 8 Edge 9 Additional pit material 10 Anchor connection fitting 11 Connection bar 12 Bolt receiver 13 Bolt 14 Hole 15 Anchor bolt 16 nut

Claims (1)

(57) [Claims 1] A plurality of upward U-shaped pit members each having an outer plate provided on both sides of a bottom plate and U-shaped joint fins provided on a lower bottom surface; A plurality of adjacent upwardly facing U-shaped pits, each of which is in combination with an anchor connection fitting formed by attaching a B-shaped bolt receiver having a hole for inserting a bolt on the lower surface on both sides of a connection bar capable of fitting an end portion to each other. Are connected to each other by side plates, and the connection bars of the anchor connection fittings are laid on the lower bottom surfaces of the plurality of upward U-shaped pit members and connected to each other, and both ends of the connection bars are upwardly U-shaped. A pit for a cable, wherein the pit is fitted and locked in a joint fin of a pit material.