JP2002039560A - Embedded heater wire device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that conventionally nonwaven cloth is mounted to a lower mold having a heater wire-spreading guide pin, the heater wire is spread to it, it is pressed by an upper mold having the heater wire presser, and the heater wire and the nonwoven cloth are fixed by thermocompression bonding for the heater wire-spread processing of an electric carpet using an electric heater, but the heater wire-spread processing using a set of upper and lower molds is expensive, also spread processing is made only by the lower mold since the problem of processing costs still remains when an electric cushion and an electric mat are subjected to the same spreading processing as in the electric carpet but the heater wire moves for preventing the machining of stretching dimensions, based on a plan since the heater wire moves, and an electric blanket is subjected to processing for spreading the heater wire between perforations but there is the problem in a worker's health since the processing is performed by manual work and is difficult. SOLUTION: A slit 5 is provided in a heat-insulating material 3, such as urethane resin by a press-machine having a snap off blade utility knife and a cutting tooth, and the heater wire 1 is spread into the slit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION Heating wire is widely used as a heating wire in household electric appliances such as an electric cushion, an electric mat, an electric blanket, and an electric carpet. These electric products have a structure in which a heater wire 1 is attached between a front fabric 2 and a back fabric 4, and the present invention is a heater wire attaching device used for an electric heating tool using heat conduction.

[0002]

2. Description of the Related Art Conventionally, there are the following problems in a conventional heater heating apparatus, an electric cushion, an electric mat, an electric carpet, an electric blanket and the like. (A) Heating wire for electric carpet using one set of upper and lower molds Heater wire for electric carpet is put on non-woven fabric 10 on lower mold 8 provided with guide pins 9 and along guide pins 9 Attach heater wire 1 and hold heater wire 1 with upper mold heater wire presser 7 while heating heater wire 1
And the nonwoven fabric 10 are fixed by thermocompression bonding. Using a pair of upper and lower molds poses a cost problem. The unevenness of the heater wire is exposed to the outside, and a thick carpet is used as a cover. (B) Accuracy of electric cushion and electric mat installation As with electric carpets, one set of upper and lower molds can be attached to the thermocompression bonding machine to perform the heating wire installation process. In many cases, the embedding process without the die heater wire holder 7 is performed. In the embedding process, the backing cloth 4 is placed on a lower die 8 provided with a guide pin 9 for vertically moving, and a heater wire is stuck along the guide pin. Table cloth 2 coated with adhesive after sticking
And these are thermocompression bonded. The problem is the heater wire 1
When fixing, the guide pin 9 goes down at the same time when the thermocompression bonding machine comes into contact with the surface cloth 2, but the elastic force of the heater wire 1 cannot hold the heater wire 1, and the thermocompression bonding is performed with the heater wire moved. It may be fixed. These may be fixed while the heater wires are in contact with each other. In order to avoid this movement, the heater wire 1 is stuck on the backing material 4 along the guide pins 9 and then the heater wire 1 is fixed to the backing material 4 with an adhesive tape to prevent the heater wire from moving due to sticking. . In addition, the heater wire is designed to have a wider interval, the heater wire is lengthened to increase the resistance value per unit length, and the amount of heat generated is reduced. I have. (C) It is difficult to attach the heater wire to the electric blanket. In the attaching process of the electric blanket, the front fabric 2 and the back fabric 4 are machined, and a passage for attaching the heater wire is provided by this machining. A heater wire is inserted into this passage, but this passage becomes a maze and is difficult to stick. Since the staking is difficult to rely on humans, there remains a health problem due to the stress of the worker.

[0003]

An object of the present invention is to lay a heater wire with high dimensional accuracy and without using an expensive laying die. Eliminating unevenness after staking.

[0004]

Means for Solving the Problems Cuts (slits) 5 of designed dimensions are made in a heat insulating material 3 such as urethane resin, and a heater wire 1 is buried therein. If slitting is performed by a press machine, the dimensional accuracy of the wrapping can approach the accuracy of the die of the press machine, and the dimensional accuracy of the heater wire laying on the heat insulating material 3 such as urethane resin can be made 1 mm or less. When slitting with a press machine is difficult in terms of cost, cutting can be performed with a cutter knife or the like. Straight 2.5
By embedding a 5 mm thick heater wire in a 5 mm thick urethane resin, the unevenness problem can be solved. These irregularities can be obtained by sandwiching the heater wire in a heat insulating material such as urethane resin without providing a slit or the like. However, when the heater wire 1 is fixed to a heat insulating material such as urethane resin with an adhesive tape or the like, the heater wire cannot be used. Dimensional accuracy cannot be obtained due to misalignment. This device was invented to solve these problems.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, the dimensional accuracy of the heater wire is improved by the above-described method, the accident such as contact of the heater wire which occurs at the time of the insertion is prevented, and the heater wire is embedded in a heat insulator such as urethane resin. No irregularities are observed from the outside, and the same heat retention characteristics as those of the embedded heater wire in which the heater wire is sandwiched with a heat insulating material such as urethane resin can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an electric cushion, an electric mat, an electric carpet, and an electric blanket will be described.

Using a press machine or the like, a cut (slit) based on the dimensions of the design drawing in the heat insulating material 3 such as urethane resin.
Insert 5. The slit 5 can be formed by shaping the slit teeth into a mold of a press machine and cutting the same, or by using a cutter knife or the like without using a press machine.

A heat insulating material 3 such as a urethane resin having a slit 5 is bonded to a backing material 4 of a heating tool such as an electric cushion, an electric mat, an electric carpet, and an electric blanket with an adhesive.

After bonding and drying, the heater wire 1 is inserted into the slit 5. Since the heater wire 1 can be attached from above the slit 5, it is simple. The stuck heater wire 1 is embedded in a heat insulating resin 3 such as urethane, and can be stuck with the designed dimensions secured.

Insulation material 3 such as urethane resin after laminating
And the outer material 2 are bonded with an adhesive.

After drying, the corners of the front fabric 2 and the back fabric 4 are sewn.

The connection is completed when a power supply is connected to the heater wire.

[0013]

According to the conventional technology in which an elastic heater wire is bonded with an adhesive or an adhesive tape in a process of mounting a heater wire on an electric cushion or an electric mat, a design drawing of a bonding design is accurately developed on a product. Impossible to do. Partial abnormal heating due to contact between heater wires, temperature unevenness due to uneven sticking, etc. occur, and sticking quality cannot be ensured. In the present invention, this heater wire can be stuck according to the design dimensions, and the problem of the prior art has been overcome. Since the electric carpet is subjected to the laminating process using the upper die 6 and the lower die 8 on the nonwoven fabric 10, the problem of the lamination dimension can be solved, but the problem of cost performance remains due to the expensive lamination die. Electric blankets rely on manual labor for difficult laying operations, and the difficulty puts stress on the worker, which in turn causes health problems for the worker. It is considered that the application field of the apparatus for bonding a heater wire into a heat insulating material such as a urethane resin provided with a slit according to the present invention which solves these problems is high. As another application field, there is also considered an application as a heater wire device of a heating tool such as an outdoor tool such as a ski boot or a ski jacket, and a heater wire sticking device having infinite possibilities.

[0014]

[Brief description of the drawings]

1A is a schematic structural view of a heater wire sticking apparatus according to an embodiment of the present invention, and FIG.

FIG. 2 is a schematic structural view of a heater wire laying apparatus of a conventional electric carpet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater wire 2 Front cloth 3 Heat insulating material such as urethane resin 4 Back cloth 5 Slit 6 Upper mold 7 Upper mold heater wire holding 8 Lower mold 9 Lower mold guide pin 10 Non-woven fabric

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K034 AA02 AA06 AA09 AA12 AA22 AA29 BA12 BB08 BB14 BC08 BC15 BC16 FA02 FA07 FA15 FA33 GA06 GA08 HA04 HA10 3L072 AA01 AB04 AC02 AD03 AD14 AE03

Claims (1)

[Claims] 1. A heater wire device having a structure in which a heater wire for heating is embedded in a heat insulating material such as urethane resin provided with slits.