JPH07174355A - Connection and insulation construction of lead wire of panel heater - Google Patents

Abstract

PURPOSE:To firmly connect a lead wire and ensure insulation at the connection by a method wherein a terminal plate is welded on a netted wire at both ends, the end of the lead wire is connected to the nearly middle part of the terminal plate and a resin is filled and set in an insulation frame arranged around the connection part. CONSTITUTION:The base of a panel heater 1 is made up of a heat-resistant film 2 that has a netted wire 3 along the side edge, and a terminal plate is laid on the netted wire 3 and welded at both ends. A lead wire 5 is connected to the nearly middle part of the terminal plate to electrically connect the lead wire 5 and the netted wire 3. Thereby, vibration, etc., of the lead wire 5 does not cause the terminal plate to come off. A resin 10 is filled and set in an insulation frame 6 and a surrounded part 7 to completely insulate the connection part between the lead wire 5 and the netted wire 3. In this case, the resin 10 filled flows around the lead wire 5 in the frame 6 and the resin 10 in the frame 6 flows under the lead wire 5 in the surrounded part 7, resulting in an improvement in insulation conditions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a panel heater lead wire connection and insulation structure. More specifically, the present invention relates to a structure for firmly connecting a lead wire to a panel heater used for an electric heating floor heating panel or the like and for reliably insulating this connecting portion.

[0002]

2. Description of the Related Art With the recent increasing interest in housing equipment, floor heating has attracted attention as a comfortable indoor heating means, and along with its widespread use, various technical improvements and innovations have been made. As equipment for such floor heating,
The mainstream is a floor panel substrate having an electrothermal heating element built-in.

Generally, as a heating element of this electric heating type floor heating panel, for example, as shown in FIG. 5, a heater wire (a) such as a nichrome wire and a heater wire (a) are formed on a heat-resistant resin film (a) or the like. A panel heater (d) is used in which a braided wire (c) that supplies current to the wiring is wired. In this panel heater (d), a lead wire (e) for connecting the braided wire (c) to a power source or an adjacent panel is connected to the braided wire (c).

The tangent line of this braided wire (c) to the lead wire (e) is, for example, as shown in FIG.
Weld one end of the wire onto the braided wire (c) and then the terminal board (f)
It is performed so that the end of the lead wire (e) is adhered to the surface. Further, in order to insulate such a connecting portion, as shown in FIG. 7, the connecting portion may be surrounded by an insulating form (g) and filled with an insulating resin (h). ing. In this case, the lead wire (e) is
In order not to come into contact with the heater wire (a) on the panel heater (d), it is pulled out upward from the upper cutout hole (ke) of the insulating form (ki).

[0005]

However, in the case of the conventional lead wire (e) connection structure as illustrated in FIG. 6, the terminal plate (f) is welded to the braided wire (c) only at one place. Therefore, if the lead wire (e) vibrates up and down as illustrated in Fig. 8 when the panel heater (a) is transported to the next insulation process, the load concentrates only on the welded part (c). However, there is a risk that the terminal plate (f) may be separated from the braided wire (c).

When the connecting portion is also insulated, the lead wire (e) is pulled out from above the insulating form (ki), so that the terminal board (f) is pulled up as shown in FIG. The resin (K) filled in the mold (K) is the terminal plate (K)
Solidified before wrapping around in the space below
A space is formed inside. For this reason, the watertightness of the insulating part is lowered, and there is a risk that the insulating part itself is damaged.

The present invention has been made in view of the above circumstances, solves the drawbacks of the conventional lead wire connection and insulation structure, firmly connects the lead wire to the panel heater, and the connecting portion thereof. The purpose is to provide a structure for surely insulating the.

[0008]

In order to solve the above problems, the present invention has a structure in which a lead wire is connected to a braided wire for supplying an electric current to a heater wire of a panel heater, and the connecting portion is insulated. The lead wire end is connected to the center of the terminal plate where the two ends are welded onto the braided wire, and the resin is filled and solidified in the insulating form frame arranged around this connection. Panel heater lead wire connection
Provide an insulating structure.

Further, in the present invention, the above-mentioned insulating form has an enclosing portion on the lead wire drawing surface, and the lead wire is upwardly passed from the notch hole at the bottom of the partition wall between this enclosing portion and the insulating form through the enclosed portion. It is also a preferable embodiment to fill and solidify the resin in the insulating form and the enclosing portion with the resin being drawn out.

[0010]

In the lead wire connecting and insulating structure of the present invention, first, the terminal plate is placed on the braided wire, and both ends 2 of the terminal plate are placed.
Weld the place to the braided wire. Then, the lead wire is adhesively fixed to the substantially central portion of the terminal plate. With this, even if the lead wire vibrates, the terminal plate is firmly fixed to the braided wire,
They do not peel off.

Also, when the connection portion is insulated, the terminal plate is not pulled up and a space is not formed below the terminal plate, so that a reliable insulating structure can be obtained. Furthermore, using an insulating formwork having an enclosing part on the lead wire drawing surface, the lead wire fixed to the terminal board with the above connection structure is passed through the notch hole at the bottom of the partition wall between the insulating formwork and the enclosing part through the enclosing part. When the wire is pulled out upward, the lead wire in the insulating mold is pressed down by the partition wall, so that the resin in the mold completely wraps around the lead wire, and the insulating state is further improved.

[0012]

EXAMPLES Examples will be shown below with reference to the accompanying drawings.
The present invention will be described in more detail. FIG. 1 is a perspective view showing an embodiment of a lead wire connecting structure of the present invention. As illustrated in FIG. 1, in the connection structure of the present invention, the terminal plate (4) is provided on the braided wire (3) incorporated in the side edge of the heat-resistant film (2) or the like constituting the base of the panel heater (1). ) Are overlapped, and the two ends of the same are welded to the braided wire (3). Then, the end portion of the lead wire (5) is joined to the substantially central portion of the terminal plate (4) to form the lead wire (5).
And the braided wire (3) are electrically connected.

Since the terminal plate (4) is fixed at both ends at two places, it is not slightly moved even by vibration of the lead wire (5) and therefore the terminal plate (4) is not likely to be peeled off. Figure 2
[FIG. 3] is a perspective view of an essential part showing an embodiment of an insulating structure of a lead wire connecting portion of the present invention. In the example shown in FIG. 2, as the insulating formwork (6), a lead wire (5) having a surrounding portion (7) on the drawing surface is used, and the lead wire (5) connected by the connection structure of FIG. ) Is pulled upward through the notch (9) provided at the bottom of the partition (8) between the insulating form (6) and the enclosing part (7) through the enclosing part (7).

Then, in this state, as illustrated in FIG. 3, the insulating form (6) and the enclosing portion (7) are filled with the resin (10) and solidified to form the lead wire (5). Completely insulate the connection with the braided wire (3). In this case,
As shown in the sectional view in FIG. 1, the lead wire (5) in the insulating form (6) is pulled out in a substantially horizontal direction due to the presence of the partition wall (8), so that the filled resin (10) is surrounded by the lead wire (5). Since the resin (10) in the insulating form (6) flows into the lower part of the lead wire (5) in the surrounding part (7) from the cutout part (9), an unnecessary space is created. The resin (10) is solidified without being formed, and its insulating state is further improved.

Of course, the present invention is not limited to the above examples, and it goes without saying that various shapes and the like of various details are possible.

[0016]

As described in detail above, the connection insulation structure of the present invention enables the lead wires of the panel heater to be firmly and stably connected, and the connection portion can be reliably insulated. This significantly improves the safety and durability of the panel heater.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of lead wire connection according to the present invention.

FIG. 2 is a cutaway perspective view illustrating an insulating form used in the present invention.

FIG. 3 is a perspective view illustrating an insulating structure of the present invention.

4 is a cross-sectional view of the insulating structure illustrated in FIG.

FIG. 5 is a plan view illustrating a panel heater.

FIG. 6 is a plan view illustrating a conventional lead wire connection structure.

FIG. 7 is a perspective view illustrating a conventional lead wire connecting portion insulating structure.

FIG. 8 is a side view illustrating a conventional lead wire connection state.

FIG. 9 is a side sectional view illustrating a conventional insulating state.

[Explanation of symbols]

 1 Panel Heater 2 Heat Resistant Resin Film 3 Braided Wire 4 Terminal Board 5 Lead Wire 6 Insulating Formwork 7 Enclosure 8 Partition Wall 9 Notch Hole 10 Resin

Claims (2)

[Claims] 1. A structure in which a lead wire is connected to a braided wire for supplying an electric current to a heater wire of a panel heater to insulate the connecting portion, and two ends of the braided wire are welded onto the braided wire at a substantially central portion of the terminal plate. A panel heater lead wire connection / insulation structure, characterized in that the end portions of the lead wires are connected to each other, and a resin is filled and solidified in an insulating form frame arranged around the connection portions. 2. The insulating form has an enclosing portion on the lead wire drawing surface, and the lead wire is drawn upward through a notch hole in the partition bottom between the enclosing portion and the insulating form through the enclosing portion. 2. The panel heater lead wire connection / insulation structure according to claim 1, wherein resin is filled and solidified in the insulating form and the surrounding portion.