JPH05231662A - Floor heating panel - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to provide a floor heating panel with improved safety that blows a thermal fuse early when abnormal heat is generated. [Structure] In the wiring box 6 of the floor heating panel body 5,
Terminal portion 9a for connecting the power line and terminal portion 9b for connecting the feed line
The one pole of this terminal portion connects the terminal portions through the thermal fuse 13, and the other pole connects the terminal portions with one long terminal plate 14, and the edge portion 14a of this long terminal plate 14 is connected. It is arranged to be close to the thermal fuse 13. [Effect] When a connection failure occurs in any of the terminal portions and abnormal heat is generated, the thermal fuse can be blown out early so that a highly safe floor heating panel can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring box structure for a floor heating panel.

[0002]

2. Description of the Related Art In recent years, an increasing number of buildings have installed a floor heating system for heating a room by installing a floor heating panel below a floor surface material.

A conventional floor heating panel will be described below. 4 and 5 show the structure of a conventional floor heating panel. As shown in FIGS. 4 and 5, a plurality of the same floor heating panels are installed side by side in one room, the power source line 2 is connected to the floor heating panel 1 at one end, and the feed line 3 is connected. Supplies power to all the floor heating panels 1 by sequentially sending power such that the power is supplied to the next floor heating panel 1. A floor heating panel body 5 is provided with a wiring box 6, and the wiring box 6 has electric wires 7a,
Two terminal portions 9a and 9b for fixing the conductor portion 7b to the terminal screw 8 are provided. These terminal parts 9a, 9b
Are connected to each other by a metal plate 10, and the metal plate 10
Is a linear heating element 1 disposed inside the floor heating panel body 5.
Both ends of 1 are connected.

The operation of the floor heating panel constructed as above will be described below.

When the electric wire 7a connected to the power source is connected to the terminal portion 9a, the linear heating element 11 is energized to warm the floor heating panel body 5. The remaining terminal portion 9b becomes a terminal for power supply.

[0006]

However, the above-mentioned conventional structure has a problem in that if the terminal screw 8 is loosened during energization, abnormal heat generation is caused in the terminal portion 9 and a fire is caused. Was there.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a safe floor heating panel.

[0008]

To achieve this object, a floor heating panel according to the present invention comprises a terminal for connecting a power supply lead-in wire, a terminal for connecting a power supply feed wire, and one of the two terminals. And a metal plate connecting the terminals of the other pole, and a part of the edge of the metal plate is arranged close to the heat-sensitive part of the temperature fuse via an insulating material. It has a wiring box.

[0009]

In this structure, one pole of the terminal for connecting the power supply lead-in line and one terminal of the terminal for connecting the power supply line is connected through the thermal fuse, and the other pole is partially connected to the heat-sensitive portion of the thermal fuse. Since the parts are connected by a metal plate close to each other,
If abnormal heat is generated due to loose connections at the terminals, heat will be transmitted through the leads of the thermal fuse or the metal plate, and the temperature of the thermal sensitive section of the thermal fuse will rise, causing the thermal fuse to blow and causing a fire. The energization will be stopped before.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are designated by the same reference numerals.

As shown in FIGS. 1 to 3, a wiring box 6 is provided in a part of the floor heating panel body 5, and the wiring box 6 has two terminal portions 9 each having a terminal screw 8.
a and 9b are provided. Short terminal plates 12a and 12b are attached to one poles of the terminal portions 9a and 9b, respectively, and the short terminal plates 12a and 12b are connected by a cylindrical thermal fuse 13. Further, the other pole is directly connected to the terminal portions 9a and 9b by the long terminal plate 14. Then, the edge portion 1 in which a part of the long terminal plate 14 is extended and bent
4a is brought into contact with the insulating partition wall 15, and the temperature fuse is also brought into contact with the opposite side of the insulating partition wall 15. Further, both ends of the linear heating element 11 arranged inside the floor heating panel body 5 are connected to the short terminal plate 12b and the long terminal plate 14 of the terminal portion 9b, respectively. The electric wire 7a connected to the power source is connected to the terminal portion 9a of the wiring box 6 configured as described above, while the electric wire 7b for power supply is connected to the terminal portion 9b.

The operation of the floor heating panel configured as described above will be described with reference to FIG. When the connection of the electric wire 7 in the terminal portion 9 is normal, there is almost no heat generation in the terminal portion 9, but when the tightening of the terminal screw 8 is loosened due to temperature shock or the like, the contact resistance increases, and the terminal portion 9 is abnormal. Causes fever. When heat is generated at the pole on the side of the short terminal plate 12, the heat is transmitted through the lead wire of the thermal fuse 13 and reaches the heat-sensitive portion to melt the thermal fuse 13. Also long terminal board 1
When the heat is generated at the poles on the 4th side, the heat first propagates through the long terminal plate 14 and reaches the heat-sensitive portion of the thermal fuse 13 through the insulating partition wall 15 which is in contact with the edge portion 14a, and blows the thermal fuse 13.

As described above, according to the embodiment of the present invention, one pole of the power supply connection terminal 9a and the feed connection terminal 9b in the wiring box 6 is provided with the thermal fuse 13 between the short terminal plates 12a and 12b. The other pole directly connects the terminals with the long terminal plate 14, and the edge portion 14 of a part of the long terminal plate 14 is connected.
Since a is close to the heat-sensitive part of the thermal fuse 13,
Even if abnormal heat generation occurs in either of the terminal portions 9a and 9b, the thermal fuse 13 is blown early.

Further, since one thermal fuse 13 reacts to the heat generation of the two poles, the structure of the wiring box can be simplified.

In the present embodiment, the terminal portions 9a and 9b have been described as a method of attaching the electric wires 7a and 7b by the terminal screw 8. However, other types of electric wire attaching methods such as a spring type quick connection terminal method and a crimping method are used. However, the same is true, and it is not limited to the terminal screw method.

[0016]

As is apparent from the above description of the embodiments, according to the present invention, one of the terminals for connecting the power supply line and the terminal for connecting the feed line is connected through a thermal fuse, and the other pole is the terminal. Since the terminals are directly connected to each other by a single terminal board, and a part of the edge portion of the terminal board is brought close to the heat-sensitive portion of the thermal fuse,
It is possible to realize a highly safe floor heating panel capable of quickly blowing the thermal fuse even if abnormal heat is generated in any of the terminal portions.

[Brief description of drawings]

FIG. 1 is a perspective view of a wiring box portion of a floor heating panel according to a first embodiment of the present invention.

FIG. 2 is a plan view of a wiring box portion of the floor heating panel.

FIG. 3 is a perspective view of the floor heating panel.

FIG. 4 is a plan view showing a laid state of a conventional floor heating panel.

FIG. 5 is a plan view of a wiring box portion of the floor heating panel.

[Explanation of symbols]

 6 Wiring box 9a, 9b Terminal part 13 Thermal fuse 14 Long terminal board 14a Edge part 15 Insulating partition

Claims (1)

[Claims] 1. A terminal portion for connecting a power supply lead-in wire, a thermal fuse connecting between terminal portions of one pole of a terminal portion for connecting a power supply wire, and a long terminal plate connecting between terminal portions of the other pole. A floor heating panel comprising: a wiring box, in which an edge portion of the long terminal plate is arranged close to a heat-sensitive portion of the temperature fuse via an insulating partition.