JP2569304Y2 - Free access floor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double floor free access floor having a floor heating function.

[0002]

2. Description of the Related Art In recent years, for power of OA equipment and telephones,
Free wiring such as transmission cables for communication is required, and computer rooms and telephone exchange rooms adopt a double structure as seen on the free access floor, so that transmission cables are usually stored under the floor. It has become.

The free access floor generally comprises a panel made of an aluminum alloy and supporting legs for supporting the panel, and the upper surface of the panel is laid on a carpet or the like. And recently, from the viewpoint of increase and generalization of OA equipment and environment and aesthetics, it is possible to construct such a double floor structure in factory buildings such as intelligent buildings, general buildings and clean rooms. More and more.

[0004] Furthermore, high-grade condominiums and resort condominiums are desired to have good livability and high added value, and the double-floor structure as described above is expected to spread to ordinary households in the future.

On the other hand, in the conventional floor heating, a hot water floor heating system in which piping is provided under the floor and hot water is circulated in the pipe, a floor material having an electric heater element built therein, or a general electric heating system is used. Carpets and the like are widespread and are commercially available.

[0006] However, the above-described floor heating is not usually performed on the above-mentioned free access floor, and the actual situation is that the floor is simply heated and cooled by air conditioning.

[0007]

The heating of such a room of the free access floor type involves heating by air conditioning, but has a problem that the feet may be cooled. In particular, in a clean room or the like, the feet may become cold due to long-term work. As a recent tendency, it has been desired to locally heat the floor in a room on a free access floor.
In order to satisfy this, it is easy to embed a heater on the free access floor. In general, the free access floors are generally arranged in a row of about 500 mm square, and must be individually adapted to the technical standards of electric appliances, and must conform to the technical standards of electrical equipment as a whole.

Therefore, when the heater and the power supply line are connected, the connection portion must be exposed to the conductive portion, but the connection portion is covered with a metal case or the like so as not to be easily touched from the outside. The connection between the heater and the power supply line is made by directly connecting the power supply line and the heater, or by connecting the heater wire and the power supply line directly or through a washer or the like, for example, for industrial use as defined in JIS C2811. There is a structure using a screwless terminal known as a screwless terminal of a terminal block.

However, with these structures, there are problems in workability and reliability when connecting a large number of free access floors with heaters.

[0010]

SUMMARY OF THE INVENTION The present invention comprises a support leg and a panel installed on a floor, a heater unit is provided on an upper surface of the panel, a heat transfer plate is laminated thereon, and a heater unit is provided on a lower portion of the panel. The connected connector is covered with a metal case to isolate it from the outside, a part of the case has a through hole, a screwless terminal is arranged near this inside, and a power supply line connected to the screwless terminal For the purpose of electrically isolating the terminal part from the outside and fixing and holding the terminal part, a metal case is provided on the relevant part, and a protective member made of an insulator is provided on the outside of the part, opposite to the screwless terminal. And

[0011]

According to the present invention, the connection between the heating wire of the heater unit and the external power supply uses a screwless terminal provided at the lower portion of the panel, and the screwless terminal is fitted into a through hole provided in a metal case. By disposing them inside so that they fit together and providing an insulating protection member near the outer surface of the through hole of the case, the screwless terminal and the power line terminal connected thereto can be electrically isolated from the outside.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of the free access floor, and FIG. FIG. 3 is an enlarged cross-sectional view of FIG. 1A.

The free access floor 1 basically includes a panel 2 and support legs 3. In this embodiment, the panel 2 made of an aluminum alloy has a size of 450 mm square, and a groove 5 for fitting the heater unit 4 is integrally formed in a meandering shape on the upper surface of the panel 2. The heater unit 4 is formed by fixing a heating wire 6 covered with a synthetic resin material such as a cord heater to a support member 7 made of a transparent thermoplastic resin or a mesh-like base cloth. This heating wire 6
Is mounted so as to fit in the groove 5 formed in the panel 2, and a heat transfer plate 16 and a floor finish such as a carpet are laminated thereon.

On the other hand, a connector for connecting a power supply to the heater unit 4 is provided at a lower portion of the back surface of the panel 2.
As specified in the Japanese Industrial Standards Wiring Plug-in Connector (C8303), this is a terminal with a structure in which a conductor of an electric wire (solid copper wire) is inserted directly into the terminal and automatically connected, and
A screwless terminal 9 having electrodes with a 1 mm gap is used. The screwless terminal 9 is disposed near the through hole 11 inside the metal case 10 having the through hole 11. The protection member 12 is disposed to face the screwless terminal 9 via the metal case 10.

As the power supply line 14 connected to the screwless terminal 9, an electric wire suitable for the screwless terminal 9 is used. Generally, a 600V vinyl insulated sheath cable is used.

Next, the operation of the above configuration will be described.

When the power supply line 14 is connected to the screwless terminal 9, since the distance between the electrodes of the screwless terminal 9 is about 11 mm, the jacket 13 of the power supply line 14 is removed to expose the insulator 15,
When the solid copper wire inside is inserted into the screwless terminal 9, it is automatically inserted and fixed by the screwless terminal 9 for connection. Not to mention the solid copper wire of the power line 14,
Since the insulator 15 is not easily touched from the outside easily for safety reasons and is also forbidden by the technical standards of electrical appliances, the exposed insulator 15 of the power line 14 connected to the screwless terminal 9 and Protective member 1 to protect jacket 13
Since 2 is disposed in such a portion, the insulator 15 and the outer cover 13 of the power supply line 14 are not easily touched from the outside.

In addition, since the protection member 12 penetrates the power supply line 14, it is bent to the screwless terminal 9 at the time of work, and a tensile force is not directly applied.

Next, FIG. 4 shows an example in which the above-mentioned free access floor 1 is provided.

This example shows an example in which one room (1.8 mm × 0.9 m) of floor heating is applied to one room of an apartment. That is, the module 4 described above is provided in a part of one room.
50 free access floors 1 (4 × 2) are laid out.

The free access floor 1 as described above is placed on the concrete floor 18 with the free access floors 1A, 1A.
B, $ 1H are arranged as shown. The power supply line 14 is connected to a main power supply line connected to the controller 19, and the controller 19 controls heat generation.

[0023]

According to the present invention, according to the present invention, a screwless terminal is arranged near the inside of a through hole of a metal case provided at the lower part of the panel, and the terminal is arranged to face the screwless terminal through the through hole of the metal case. By arranging the provided insulating protection member, (a) the connection of the power supply line is made one-touch, and the workability can be remarkably improved.

(B) The terminal of the power supply line can be electrically isolated from the outside.

(C) At the time of attaching the power supply line, the protective member is buffered to the screwless terminal portion, so that unreasonable stress such as bending is not applied.

With the above-described effects, the work can be improved, and the safety and reliability can be improved.

[Brief description of the drawings]

FIG. 1 is an external view of a free access floor showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an exploded component configuration of the free access floor showing one embodiment of the present invention.

FIG. 3 is an essential part cross-sectional view showing a part A in FIG. 1;

FIG. 4 is a perspective view showing an example of laying a free access floor showing one embodiment of the present invention.

[Explanation of symbols]

 2 Panel 3 Support leg 4 Heater element 9 Screwless terminal 10 Case 11 Through hole 12 Protective member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nobuo Hoshino 2nd Daifuku, Kuwana-shi, Mie Hitachi Metals Co., Ltd. Kuwana Plant (72) Inventor Eiji Takada 2nd Daifuku Kuwana-shi, Mie Hitachi Metals Co., Ltd. Government Yoshifumi Muramoto

Claims (1)

(57) [Scope of request for utility model registration] A heater unit (4) is provided on an upper surface side of a panel (2) provided with support legs (3) for defining a predetermined space between the heater unit (4) and a floor surface.
And the heat transfer plate (16) are stacked and mounted, and the screwless terminal (9) is provided on a free access floor having a screwless terminal (9) as a connector on the lower surface side of the panel (2). Placed inside the through hole (11) provided in the case (10),
A free access floor, wherein an insulating protective member (12) is provided near the outer surface of the through hole (11) of the case (10).