JPH07135725A - Multi-joint box - Google Patents

Abstract

PURPOSE:To lay a piping for lead-in directly on a joint box from a vertical wiring space by installing and forming an opening for inspection to a top face, a cellular-duct end connection to a base and a header-duct connecting section and a piping-pipe connector for lead-in to a side face. CONSTITUTION:An opening 8 for inspection is formed and mounted to a top face, a cellular-duct end connection 9 to a base and a header-duct connecting section 10 and a piping-pipe connector 11 for lead-in to a side face in a multi- joint box 3. Duct connectors 12 are used for connecting header ducts 2 to the header-duct connecting sections 10, and the header-duct connecting section 10 employing no header duct are covered with a blank cap 13. Cellular ducts 1 are formed by setting up covers 7 to the crest sections 6a of deck plates 6 from lower sections. Accordingly, pipings 5 for lead-in can be laid directly on the joint box from a vertical wiring space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-joint box used in a cellular header duct construction method, which is a type of floor piping construction method.

[0002]

2. Description of the Related Art In recent office buildings, electric wiring has become more and more complicated with the spread of various office automation equipment. On the other hand, in building construction as well, there are many large spans with few pillars in terms of functionality and workability, and the floor thickness has been reduced to reduce the floor weight. The cellular header duct construction method has been adopted as a construction method capable of coping with such a situation.

In this cellular header duct construction method, a header duct 2 is used as a piping material for connecting a vertical wiring space of electric wires in a building and a cellular duct 1 which is a horizontal wiring space. Then, the connection between the cellular duct 1 and the header duct 2 was made by using a joint box 30 as shown in FIG.

[0004]

However, since the joint box 30 used in the above-mentioned conventional cellular header duct construction method is not provided with a piping pipe connector for lead-in, the joint box 30 can be directly led into the joint box 30 from the vertical wiring space. There was a problem that it was not possible to lay down the piping for the product.

Therefore, the multi-joint box of the present invention is made to solve the problems of the conventional joint box.

[0006]

Therefore, in the multi-joint box of the present invention, an inspection opening 8 is provided on the top surface, a cellular duct connection port 9 is provided on the bottom surface, a header duct connection portion 10 and a piping pipe connector 11 are provided on the side surface. I am supposed to.

[0007]

In the multi-joint box of the present invention, as a result of the above means, it is possible to lay a lead-in pipe directly from the vertical wiring space to the joint box.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-joint box of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a state in which the multi-joint box of the present invention is used in a cellular header duct construction method, in which the cellular duct 1 and the header duct 2 are connected via a multi-joint box 3 of the present invention. Piping 5 from the joint box 3 to the vertical wiring space 4
Is being laid.

As shown in FIGS. 2 and 3, the multi-joint box 3 of the present invention has an inspection opening 8 on the top, a cellular duct connection 9 on the bottom, a header duct connection 10 on the side, and a lead-in pipe. A pipe connector 11 is provided. Then, the header duct connecting portion 10
To connect the header duct 2 to the duct connector 1
2 is used, and the header duct connecting portion 10 that does not connect the header duct 2 is covered with a blank cap 13. Further, in the example shown in this embodiment, the header duct connecting portion 10 is provided on the four side surfaces, and the lead-in piping pipe connector 11 is provided on the two opposite side surfaces. The side surface on which the piping pipe connector 11 is provided is not particularly limited.

The cellular duct 1 is formed by attaching a cover 7 to the mountain portion 6a of the deck plate 6 from below.

[0011]

The multi-joint box of the present invention is constructed as described above, and since the lead-in pipe 5 can be laid directly from the vertical wiring space 4 to this joint box, the multi-joint box of the present invention can be constructed. If a joint box is used, electrical wiring to walls, pillars, etc., or cellular duct 1 is performed through lead-in pipe 5, and it is possible to easily cope with cases such as relocation of electrical wiring. Have the effect.

[Brief description of drawings]

FIG. 1 is an explanatory view showing floor piping by a cellular header duct construction method using a multi-joint box of the present invention.

FIG. 2 is an explanatory view showing a usage state of the multi-joint box of the present invention.

FIG. 3 is an exploded perspective view of the multi-joint box of the present invention.

FIG. 4 is an explanatory view showing a usage state of a conventional joint box.

[Explanation of symbols]

 8 Inspection opening 9 Cellular duct connection port 10 Header duct connection part 11 Piping pipe connector

Claims (1)

[Claims] 1. An inspection opening (8) on the top, a cellular duct connection (9) on the bottom, a header duct connection (10) and a piping pipe connector (11) on the side. Multi joint box.