JP3019781U - Underground cable installation device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide means for easily installing an underground cable in a wiring box. [Structure] A wiring box adapter 3 embedded in a side wall 1a of a concrete wiring box 1 is attached to a rectangular box 4
And a partition wall 6 in the form of a lattice that divides the inside of the box 4 into a plurality of areas 5. Further, a water blocking collar 8 is provided around the box 4, and an enlarged portion 8a is formed at the tip of the collar 8 in order to further improve the water blocking effect.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an arrangement device for an underground cable.

[0002]

[Prior art]

 The wiring box in which the underground cable is installed is generally made of concrete, and an insertion hole for inserting the underground cable was formed in the side wall of the wiring box. However, it is extremely troublesome to form an insertion hole in a concrete side wall at the construction site. Therefore, a wiring adapter is embedded in the side wall and the underground cable is inserted into the insertion hole formed in this wiring adapter. It is known. As such a wiring adapter, a multi-port duct board A (reference numeral is incorporated herein by reference) disclosed in Japanese Patent Publication No. 59-24616 and a duct described in Japanese Patent Publication No. 50-16519. Termination devices 19 are known. For the former multi-port duct board (wiring adapter) A, determine the number of ports at the construction site according to the number of cables at the construction site, and bond the duct cylinder 1 and the enclosure 2 with an adhesive, and further between them. Cement-based material 3 such as mortar is driven into an assembly, fitted into window holes 5 of a box (wiring box) 4, and mortar is injected by an injector to bond them. The latter duct terminating device (wiring adapter) 19 has vertical side walls 27 and 29 formed on both sides of the tubular receiving portion 31, and flanges 37 and 39 are formed on both ends of the vertical side walls 27 and 29. Is configured. This is one in which flanges 37 and 39 are fitted to each other to form a duct terminating device 19 having a required number of receiving portions 31. The duct terminating device 19 is positioned in a mold 41, and the concrete is fixed to the mold 41. 45 is poured to form the slag (wiring box) 21.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional multi-port duct board A and duct terminating device 19 are extremely troublesome to assemble because they are assembled at the construction site, and it is inevitable that the skill level of the construction will cause skill in the construction. In addition, there is a problem that it is difficult to carry out the construction properly so that there is no variation in construction.

Further, construction conditions such as the insertion position, the number, and the thickness of the underground cable to be inserted into the wiring box differ depending on the construction site. Here, the conventional multi-port duct board A and the duct terminating device 19 described above can adjust the number of duct cylinders 1 and the number of receiving portions 31 according to the number of underground cables. The diameters of the duct cylinder 1 and the receiving portion 31 cannot be changed according to the thickness of the middle cable. As described above, the above-mentioned conventional technology has a problem that it is difficult to freely arrange the underground cable while flexibly responding to the construction conditions at the site because the degree of freedom in construction is extremely small.

Therefore, the present invention provides an underground cable arrangement that allows a beginner to easily and quickly arrange an underground cable in a wiring box so that there is no variation in construction regardless of the skill level of the construction at the construction site. The purpose is to provide a device.

[0006]

[Means for Solving the Problems]

 To this end, the present invention comprises a concrete wiring box 1 having a human hole cover 2 on the upper surface and buried in the ground, and a wiring adapter 3 made of synthetic resin mounted on a side wall 1a of the wiring box 1. The underground cable arranging device is configured. The wiring adapter 3 is composed of a rectangular box 4 having a back plate 7 and a partition wall portion 6 that divides the inside of the box 4 into a plurality of areas 5 filled with the paste 13 and is a box. 4, a brim portion 8 is integrally provided around the circumference of 4, and an enlarged portion 8a is formed at the tip of the brim portion 8. Further, the present invention has a concrete wiring box 1 having a human hole cover 2 on the upper surface and buried in the ground, and a synthetic resin wiring adapter 3 mounted on a side wall 1a of the wiring box 1 to an underground cable. The arrangement device is configured. The wiring adapter 3 is composed of a rectangular box 4 and a partition wall portion 22 which is detachably mounted inside the box 4. The partition wall portion 22 has a cross shape and is vertical to the box 4. A groove-shaped mounting portion 21 is formed on the inner wall surface that is horizontal to the inner wall surface so that the tip portion of the partition wall portion 22 is removably mounted.

[0007]

[Action]

 According to the above configuration, a desired number of insertion holes 12 and 16 having a desired hole diameter are formed at desired positions of the wiring adapter 3 according to the construction conditions at the site, and the insertion holes 12 and 16 are formed in the insertion holes 12 and 16. After passing the underground cable, the inside of the area 5 where the insertion holes 12 and 16 are opened is filled with a paste 13 such as mortar or resin, so that the underground cable can be easily and quickly placed in the wiring box 1. Can be installed at Further, in this state, the brim portion 8 projecting around the box 4 is inside the side wall 1a of the underground box 1, and the front end portion thereof has the enlarged portion 8a. The water effect can be improved. Further, by mounting the partition wall portion 22 on the mounting portion 21 of the box 4 and passing the underground cable through the adapter 3, the underground cable can be easily and quickly arranged in the wiring box 1.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a wiring box for an underground cable, and FIG. 2 is a rear perspective view of a wiring adapter. In FIG. 1, the wiring box 1 is made of concrete to be strong. Reference numeral 2 denotes a human hole cover provided on the upper surface of the wiring box 1. The human hole cover 2 is exposed on the ground surface when the wiring box 1 is buried in the ground. Reference numeral 3 is a wiring adapter embedded in the side wall 1a of the wiring box 1. 1 and 2, the adapter 3 is mainly composed of a box 4, and inside the box 4, partition walls 6 for dividing the inside of the box 4 into a plurality of areas 5 are formed in a lattice shape. There is. Further, a back plate 7 is formed on the back surface thereof, and a collar portion 8 is integrally provided so as to project around the box 4. An enlarged portion 8a for enhancing the water blocking effect is formed at the tip of the brim portion 8 (see FIG. 3). The box 4 has a rectangular shape, and the partition wall portion 6 is formed in a lattice shape so as to divide the inside thereof into eight equal parts. The adapter 3 is made of, for example, a synthetic resin in a thin plate shape, and the insertion holes 12 and 16 for inserting the cable pipe can be easily formed by a tool such as a drill. Further, as shown in FIG. 2, the back plate 7 is formed with a mark 9 for the opening position.

Next, a construction method will be described. The adapter 3 is integrated with the wiring box 1 by embedding the adapter 3 in the side wall 1a when forming the wiring box 1 by concrete casting. Next, the insertion holes 12 and 16 are formed in the adapter 3 with a tool. The opening positions, the number, the hole diameter, etc. of the insertion holes 12, 16 are determined according to the construction conditions at the construction site such as the insertion position, the number and the thickness of the cable pipe or cable. After the insertion holes 12 and 16 are opened, a cable tube is inserted next. FIG. 3 is a sectional view of the adapter 3 in which the cable tube 10 is inserted into the insertion hole 12, and the cable 11 is inserted into the cable tube 10. When the cable pipe 10 is inserted, the paste 13 such as mortar or resin is filled inside the area 5 surrounding the cable pipe 10 to seal the gap between the insertion hole 12 and the cable pipe 10. Further, the cable 13 is firmly fixed by solidifying the paste 13. In FIG. 3, the collar portion 8 embedded in the side wall 1a is a water blocking means for preventing the adapter 3 from coming off the side wall 1a and for preventing groundwater (see arrow) from entering the inside of the wiring box 1. By forming the enlarged portion 8a at the tip, the water blocking effect is further enhanced.

By filling the area 13 with the paste 13 as described above, it is possible to ensure sufficient water tightness and secure sealing without variation in construction. Also, as shown in FIG. 4, when the cable pipe 15 has a large diameter, a large-diameter insertion hole 16 is opened over a plurality of areas 5, and a plurality of areas 5 surrounding the cable pipe 15 (main The paste 13 is filled in the four areas 5 in the embodiment. As described above, according to this adapter 3, it is possible to easily and quickly perform the construction while flexibly responding to the construction conditions at the site.

Next, another embodiment of the present invention will be described. FIG. 5 is a partial front view of the wiring adapter of the second embodiment of the present invention. In FIG. 5, a notch 20 for removal is formed in the partition wall 6, and by partially removing the partition wall 6 that obstructs the operation of opening the insertion hole from the notch 20. The insertion hole 12 can be easily opened. FIG. 6 is a perspective view of a wiring adapter according to a third embodiment of the present invention. In FIG. 6, groove-shaped mounting portions 21 are formed on the vertical inner wall surface and the horizontal inner wall surface of the rectangular box 4 which is the main body of the adapter 3. In addition, a box-shaped partition wall portion 22 is formed separately from the box 4. Therefore, the partition wall portion 22 can be disposed inside the box 4 by detachably mounting the tip end portion of the partition wall portion 22 on the mounting portion 21.

FIG. 7 is a perspective view of a cable tube according to a fourth embodiment of the present invention, and FIG. 8 is a sectional view of the adapter 3 in which the cable tube 10 is inserted into the insertion hole 12. In FIG. 7, a box-shaped padding 24 is attached to the cable tube 10. The padding 24 is made of a swelling sponge having a property of expanding when it is impregnated with groundwater, or an elastic waterproof material such as rubber. As shown in FIG. 8, the cable tube 10 is inserted into the insertion hole, and the padding 24 is fitted into the area 5 of the adapter 3. When the filling 24 is impregnated with groundwater, the filling 24 expands and seals the inside of the area 5, so that it is possible to reliably prevent water from entering the inside of the box 1. If such a filling 24 is used, it is not necessary to fill the paste 13 as in the above embodiment, and the piping work can be performed more easily. Reference numeral 25 is a second draining brim.

[0013]

[Effect of device]

 As described above, the present invention has an extremely simple structure, and the underground cable such as the cable pipe 10 and the cable 11 can be easily and quickly installed in the wiring box 1, and the construction cost is high. The cost can be reduced to the width. In addition, since the construction is extremely simple and does not require skill, there is almost no variation in construction due to differences in skill, and even beginners can perform the construction quickly and properly so that sufficient water tightness can be secured. Moreover, since the brim portion 8 is provided so as to project around the box 4 and the enlarged portion 8a is formed at the tip of the brim portion 8, a sufficient water blocking effect can be obtained. Further, by making the partition wall 22 and the box 4 separate so that the partition wall 22 can be freely attached to and detached from the box 4, the partition wall 22 and the box 4 can be managed separately, and if necessary, the partition wall 22 Can be removed from the box 4, and the partition wall portion 22 can be easily manufactured by forming the partition wall portion 22 into a cross shape.

[Brief description of drawings]

FIG. 1 is a perspective view of an underground cable wiring box.

FIG. 2 is a rear perspective view of the wiring adapter.

FIG. 3 is a sectional view of a wiring adapter embedded in a side wall of a wiring box.

[Figure 4] Front view of the wiring adapter

[Fig. 5] Partial front view of the wiring adapter

FIG. 6 is a perspective view of a wiring adapter.

FIG. 7 is a perspective view of a cable tube

FIG. 8 is a sectional view of the adapter with the cable tube inserted into the insertion hole.

[Explanation of symbols]

 1 Wiring box 1a Side wall 3 Wiring adapter 4 Box 5 Area 6 Partition wall part 8 Collar part 8a Enlarged part 10,15 Cable pipe 11 Cable 21 Mounting part 22 Partition wall part

Claims (4)

[Scope of utility model registration request] 1. A wiring box 1 made of concrete which has a human hole cover 2 on the upper surface and is buried in the ground, and a side wall 1a of the wiring box 1.
The wiring adapter 3 is made of synthetic resin and is attached to the wiring box 3. The wiring adapter 3 has a rectangular box 4 having a back plate 7 and a plurality of areas 5 filled with the paste 13 inside the box 4. An underground cable comprising a partition wall portion 6 which is divided, and a brim portion 8 integrally protruding around the box 4 and an enlarged portion 8a being formed at the tip of the brim portion 8. Arranging device. 2. The underground cable arranging device according to claim 1, wherein the partition wall portion 6 is formed in a lattice shape. 3. A wiring box 1 made of concrete which has a human hole cover 2 on the upper surface and is buried in the ground, and a side wall 1a of the wiring box 1.
The wiring adapter 3 is made of synthetic resin and is attached to the box 4. The wiring adapter 3 is a rectangular box 4 and the partition wall 22 is detachably mounted inside the box 4.
The partition wall portion 22 has a cross shape, and the tip of the partition wall portion 22 is detachably mounted on the vertical inner wall surface and the horizontal inner wall surface of the box 4 in a groove-like mounting manner. An arrangement device for an underground cable, characterized in that a portion 21 is formed. 4. The underground cable according to claim 3, wherein a brim portion 8 is integrally projected around the box 4, and an enlarged portion 8a is formed at a tip portion of the brim portion 8. Arranging device.