JPH01165867A - Underfloor wiring system - Google Patents

Abstract

PURPOSE: To prevent abnormality of a signal and leakage by arranging a cable rack as a main cable way in the underfloor space, and arranging a wiring duct as a branching cable way. CONSTITUTION: A pair of supports 2 are disposed on an underfloor base 1, a stay 17 is laid between the supports 2, and a first and a second cable racks 15, 16 are fieced by a pair of brackets 18 fitted to the stay 17. The respective wirings A, a for a strong current and a weak current are disposed in the cable rackes 15, 16. The supports 2 are arranged on the underfloor base 1, and wiring ducts 20, 25 are fixed by a bracket 21 fitted to the supports 2. Further, branch wiring led from the strong current and weak current cable racks 15, 16 are disposed in the wiring ducts 20, 25.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to an underfloor wiring system.

[Background technology]

Figure 2 shows the structure of the access floor, which is currently under construction. On the same floor, a large number of supports 31... are arranged on the underfloor base 30, and these supports 31...
The floor panels 32... are laid down through the.

The under-floor space, which is the space below the floor panel 32, includes:
As shown in the figure, many wiring (cables) 33 for high electric power and low electric power are being passed through, but in the past, these wiring 33 were arranged in a disorderly manner. It has been. As a result, the wiring for high current and the wiring for low current come into contact with each other or come close to each other, which may cause abnormalities in signals sent through the wiring. Said floor panel 3
2 is sometimes supported by a high supporter 31 and made into a raised floor type, but in this case, air conditioning ducts, cooling water pipes, etc. are passed through the underfloor space, so water may leak from these. If this leaked water reaches a damaged part of the wiring 33 disposed on the underfloor base 30, there is a risk of causing an electrical leakage.

[Purpose of the invention]

In view of the above circumstances, the present invention provides a signal that does not cause any abnormality in the signal.
Moreover, it is an object of the present invention to provide an underfloor wiring system that does not cause electrical leakage.

[Disclosure of the invention]

To achieve the above object, the present invention includes supporting means arranged on an underfloor base, a floor panel being laid through these supporting means, and at least a strong electric current installed in the underfloor space which is the space below the floor panel. In the underfloor wiring system, a cable rack and a wiring duct are supported by support means and are provided in the underfloor space, and the cable rack is arranged to pass the power and light electrical wiring. The wiring duct serves as a main line electrical circuit through which main wiring for power and light electrical power passes separately, and the wiring duct serves as a branch electrical circuit through which branch wiring drawn out from within each of the cable racks for heavy electrical power and light electrical power passes separately. The gist of this article is an underfloor wiring system that is characterized by:

The present invention will be explained in detail below with reference to the illustrated drawings.

FIG. 1 shows an embodiment of the underfloor wiring system according to the present invention, viewed diagonally from above.

As shown in the figure, this underfloor wiring system includes a large number of supports 2 arranged on an underfloor base 1.

Each support 2 includes a support 4 which is provided with a base plate 3 at its lower end so as to be self-supporting, and a fixing nut 5 is attached to the upper end of this support 4. The support 4 has a pedestal 6.
A shaft 7 protruding from the lower part of the pedestal 6 is screwed through a fixing nut 5 so that it can move up and down, and is fixed at a desired height by tightening a lock nut 8. It is a substantially U-shaped piece with a groove 6a that opens upward in the shape of a .
... is installed. These holes 6C... are holes for positioning the floor panel 10. Each of the supports 2
are arranged so as to correspond to the corners of each floor panel 10, and their upper surfaces 6b receive the corners that abut each other from below. Note that a carpet tile 11 is laid on the upper surface of the floor panel 10.

By the way, in the underfloor space formed by the floor panels 10..., there are not new electrical circuit materials, but cable racks 15, 16 and wiring ducts 2 that have been conventionally used in ceiling parts, etc.
0. The branch duct 25 is used as is and installed.

These are placed directly below the floor panels 10 with a small gap between them. The two cable racks, that is, the first and second cable racks 15 and 16, are both made of punched metal with a groove shape, and are installed with the groove openings facing upward. These racks 15, 16 are fixed at each part in the extending direction by a pair of supports 2.2. These pair of supports 2
．． A stay 17 is spanned between the fixing nut 5 and the lock nut 8 with both ends sandwiched between them, and a pair of brackets 1 are mounted on the stay 17.
8.18 fixes each said cable rack 15.16. These racks 15 and 16 are arranged horizontally and parallel to each other, and one of them, the first cable rack 15, serves as a power path for high power, and the other, second cable rack 16, serves as a power path for light power. The main electrical circuit is constructed by passing through the wirings A and A for strong current and weak electrical current so that they are separated and independent. Said wiring duct 2
0 and branch duct 25 are horizontal and parallel to each other and oriented perpendicular to the direction of extension of both cable racks 15, 16. The wiring duct 20 is configured as one of the wiring ducts, and a conductive means is already provided inside the wiring duct 20.

The duct 20 is fixed with its opening facing downward so that the conductive means is not exposed upward and becomes dangerous. This fixation is achieved by a bracket 21 attached to the support 2.
The wiring duct 20 is electrically connected to the electrically conductive means through a connector 22 to which a heavy-current wiring A led from a heavy-current cable rack 15 placed outside the range shown in the figure is connected. has been done. The branch duct 25 is configured as another wiring duct. This duct 2
Reference numeral 5 is a member having a U-shaped cross section, and is fixed with its opening facing upward. This fixing is done on the same duct 2.
5 is fitted into the groove 6a of the support 2, and the second cable rack 16 is inserted into the duct 25.
A light current wiring a taken out from is passed through as a branch. Note that the upper surfaces of the branch duct 25 and the support 2 may be on the same level, so that the floor panels 10 are supported not only by the support 2 but also by the duct 25. .

As described above, the cable rack is installed in the underfloor space supported by a cable rack and a wiring duct support means, and the cable rack serves as a main power line through which the main wiring for heavy electricity and for light electricity passes separately. The wiring duct serves as a branch circuit for passing branch wiring pulled out from inside the cable rack for high power and low power, so various wires are not chaotically mixed together as in the past. Instead, they are wired separately and independently according to type and in an orderly manner, thereby preventing abnormalities from occurring in the signals sent through these wires. Moreover, even if the floor panel is of a raised floor type and water leaks from the air conditioning ducts or cooling water pipes in the underfloor space, the leaked water will only flow onto the underfloor base and will not cause damage to the racks or ducts. This prevents the wires from reaching the wiring arranged above, thereby eliminating the risk of causing electrical leakage. Furthermore, if the cable rack is arranged with an opening facing upward as in the embodiment described above, maintenance such as when replacing equipment on the floor becomes easier.

Note that for the cable racks and ducts, other types of ranks and ducts may be used. The cable rack was constructed with one wire each for high power and low power, but a separator was arranged within one common cable rack, and the separated cables were used for high power and low power, respectively. Wiring may be passed through it. Although the supports are of the type arranged in advance on the underfloor base, they may also be of the type attached to the floor panel.

〔Effect of the invention〕

Since the underfloor wiring system according to the present invention is configured as described above, there will be no signal abnormality and no electric leakage will occur.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the underfloor wiring system according to the present invention, and FIG. 2 is a perspective view showing a conventional underfloor wiring system. 1... Underfloor base 2... Support 10... Floor panel 15.16... Cable rack 20, 25...
・Wiring duct agent Patent attorney Takehiko Matsumoto

Claims (1)

[Claims] (1) Supporting means are arranged on the underfloor base, and a floor panel is laid through these supporting means, and at least high-power and low-power wiring is passed through the underfloor space that is the space below the floor panel. In the underfloor wiring system, a cable rack and a wiring duct are supported by support means and arranged in the underfloor space,
The cable rack serves as a main power line through which the main wiring for high power and low power runs separately, and the wiring duct serves as a branch wiring drawn out from inside each of the cable racks for high power and low power. An underfloor wiring system characterized by a branch electrical circuit that runs through each separately.