JPS6256722B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for installing an underfloor wiring conduit for a floor outlet etc., which is suitable for installing floor outlets etc. in a commercial facility building, for example.

Conventionally, this type of installation method involves arranging multiple drive boxes in a grid pattern on the floor and penetrating the floor.
In addition to fixing the driving box, it was common to arrange a duct or the like in the lower opening of each of these driving boxes, that is, the opening on the back side of the floor.

However, with this construction method, even if a large number of driving boxes are penetrated and fixed, and ducts etc. are installed in each of these driving boxes, objects placed on the floor (such as desks, lockers, kitchens, etc.) If the arrangement of items is changed due to the layout of the room or the rearrangement of the room at a later date, there will always be boxes, ducts, etc. that are not used.
In this case, the cost of the driven box is relatively low, but the material cost of the duct etc. is extremely high and the construction is difficult. There is a huge loss in terms of cost and construction.

Furthermore, if the ducts, etc. are arranged in the predetermined positions from the beginning, when wiring is drawn out from the driving box to be used, the wiring must be routed around unused ducts, etc. to the driving box to be used. As a result, it became extremely troublesome to install the wiring into the implantation box used, and the length of the wiring also became extremely long, making the cost of wiring materials unnecessarily expensive. It had the following drawback.

The present invention was developed in view of the above circumstances, and its purpose is to prevent wasted material costs and excessive construction costs for ducts, etc., and to reduce the cost of the driving box used. The present invention provides a construction method for installing an underfloor wiring conduit for a floor outlet, etc., which allows easy introduction of wiring and minimizes the cost of materials required for the wiring.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

First, prepare a writing box.

This may be, for example, a cylindrical piece 2 as shown in FIG. 1 or a rectangular parallelepiped piece 1 as shown in FIG. 3, and the height thereof is made approximately equal to the thickness of the concrete floor 3. This entry box 1 and 2
The wires pass through upwardly and downwardly to form electric wire insertion passages 4 and 5, and have attachment threaded portions 6a, 6b, 7a and 7b consisting of screw holes or the like at the upper and lower ends, respectively. Then, height adjustment rings 9 and 10 are screwed directly or via screws 8 to the attachment screw parts 6a and 7a at the upper end, and lid bodies 11 and 1 are screwed onto the height adjustment rings 9 and 10.
2 or a floor outlet 13, which will be described later, can be selectively installed.

Also, prepare an attachment box. This is made into a stepped cylindrical shape 15 as shown in FIG. 1 or a box-like shape 14 as shown in FIG. 3, corresponding to the driving boxes 1 and 2, for example. , 2, or directly to the attachment screws 6b, 7b at the lower end of the screw 1.
By removably screwing the connector through the connector 6, communication connection can be established. Circular hole-shaped or cylindrical pipe connection parts 17 and 18 are provided on the side walls of the attachment boxes 14 and 15, and the pipe connection parts 1
A conduit 19 can be selectively connected to 7 and 18 via a joint 20, which will be described later.

Therefore, when pouring a concrete floor, a plurality of pouring boxes 1, 2 are placed on the floor 3 as shown in FIG.
are arranged in a predetermined manner, for example, in a vertical or horizontal matrix arrangement, and are driven through the floor.

After concrete is poured, floor outlets 13 are installed according to the floor configuration, etc., as shown in Figure 7.
Select drive boxes 1 and 2 to which etc. should be installed,
Attachment boxes 14 and 15 are screwed onto the lower ends of the selected driving boxes 1 and 2, so that the attachment boxes 14 and 15 protrude from the lower surface of the floor 3.

After that, attachment boxes 14 and 15
A conduit 19 for underfloor wiring is connected along the underfloor surface 3b via the pipe connecting portions 17, 18 and a predetermined joint 20, and the line is inserted. Further, a floor outlet 13 or the like is attached to the driving boxes 1 and 2 instead of the lid 11.

Even if the concrete floor 3 has some irregularities, it is possible to adjust the level between the upper surfaces of the driving boxes 1 and 2 and the floor upper surface 1a by raising and lowering the height adjustment rings 9 and 10 or by replacing them.

According to such a construction method, the attachment boxes 14 and 15 are screwed onto only the driving boxes 1 and 2 to be used among the plurality of driving boxes 1 and 2 cast into the concrete floor 3. Since the conduit 19 is placed directly between the attached attachment boxes, the construction work can be significantly reduced compared to the conventional method where ducts, etc. are placed for all the plurality of drive boxes. can. Moreover, the construction cost required for this is naturally low, and in the case of the present invention, there are no attachment boxes 14, 15 or conduits 19 that are not in use, so the cost of materials such as ducts etc. in the past is reduced. Waste can also be completely prevented.

Furthermore, since the attachment boxes 14 and 15 are screwed only to the drive boxes 1 and 2 to be used, and the connection between these attachment boxes 14 and 15 is made with a conductor 19, the wiring is connected to the conduit 19. Insert the drive box 1 to be used from the attachment boxes 14 and 15,
2, there is no need to follow unnecessary routes like in the past. Therefore, since the wiring route can reach the implantation boxes 1 and 2 to be used with the minimum introduction route, the wiring introduction work is also significantly simplified and the wiring introduction work can be carried out easily. Moreover, since there is no waste in the wiring introduction route, the cost of materials required for wiring can be kept to a minimum.

In addition, even if you need to lead the conduit 19 to a different location later due to a room remodel, etc., the point is to connect the attachment box 14 that has been used until now.
15, change the direction or screw it into the drive boxes 1 and 2 that will be used next time, and connect the attachment boxes 14 and 15 to the other attachment using as much of the conduit 19 that has been used as possible. It is sufficient to connect directly to the test boxes 14 and 15. Therefore, it is easy to construct underfloor piping for redecorating a room, and not only material costs but also construction costs can be significantly reduced.

As explained above, the method for installing underfloor wiring conduits for floor outlets, etc. of the present invention involves driving a plurality of driving boxes that penetrate through the concrete floor when pouring the concrete floor, and For boxes to be used, a cylindrical or box-shaped attachment box that protrudes below the bottom surface of the floor is removably screwed onto the lower end of the driving box, and the space between the attachment boxes is Since the underfloor wiring conduit is directly installed along the underfloor surface of the floor, it is possible to prevent waste of material costs and excessive construction costs for ducts, etc., which was required in the past. In addition to being able to easily introduce wiring, the cost of materials required for the wiring can also be kept to a minimum, which provides useful effects in practical terms.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a partial sectional view showing one driving box and its attached equipment, FIG. 2 is a side view of the same, and FIG. Fig. 4 is a bottom view of the same, Fig. 5 is a plan view of the same, Fig. 6 is a partial sectional view showing the attached equipment.
FIG. 7 is a diagram showing the construction state. Explanation of symbols, 1, 2...Input box, 3...
...Concrete floor, 14,15... Attachment box, 19... Conduit.

Claims (1)

[Claims] 1. When pouring a concrete floor, a plurality of driving boxes are driven through the floor, and the one that is used is placed at the lower end of the driving box below the bottom surface of the floor. A floor outlet characterized in that a protruding cylindrical or box-shaped attachment box is removably screwed on, and an underfloor wiring conduit is directly piped along the underfloor surface between the attachment boxes. Installation method of conduit for underfloor wiring etc.