JP2001190306A - Cold-proof shoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold-proof shoe using an insole having sufficient flexibility and capable of easily generating heat to suitable temperature. SOLUTION: In a cold-proof shoe, at least one hoe 2 is 2 is provided in a part of the insole 1 of the shoe desired to generate heat to accommodate a heat generating member 4. Then, metallic net electrodes 3 are attached to both the surfaces of the insole 1 and a connecting terminal 5 is connected to one end thereof. Protective covers 6 are attached to both the surfaces of the insole 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe having a cold protection function, and more particularly to a cold protection shoe using an insole having a heat generation function (hereinafter referred to as a cold protection shoe).

[0002]

2. Description of the Related Art Conventionally, winter shoes have been used in cold regions. Winter shoes are generally made with the fur of the fur on the inside and are kept warm. Others wrap cotton to keep their feet warm.
Even with these winter shoes, if the feet were still insufficiently warm, a fireplace was sometimes placed in the shoes.

[0003]

However, the method of putting a hand warmer in a shoe to warm the shoe may be too hot and cannot be adjusted to an appropriate temperature. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a winter shoe using an insole which has sufficient flexibility and can easily generate heat at an appropriate temperature.

[0004]

According to the present invention, at least one hole is provided in a portion of a shoe insole where heat is to be generated, a heating element is placed in the shoe, and metal mesh electrodes are attached to both sides of the insole. Then, a connection terminal is connected to one end, and protective covers are attached to both sides of the insole. In this heating element, electrodes are adhered to both surfaces of a flexible heating element in which conductive powder is mixed with natural rubber or synthetic rubber.

[0005] Further, by providing a connection terminal for supplying power to the heating element by providing a cut in the side end of the arch of the insole, the attachment and detachment and replacement of the insole become easy.
The shape of the heating element is arbitrary, and may be in accordance with the shape of the part of the insole where heat is to be generated. This heating element covers both sides of a flexible heating element with an electrode sheet made of a metal net,
It is integrated and can be bent flexibly.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the winter shoes of the present invention will be described in more detail. As shown in FIG. 1A, a hole 2 for accommodating a heating element at a desired position is formed in an insole 1 used by punching. FIG. 1B shows a metal mesh electrode 3 for supplying electricity to the heating element, and FIG. 1C shows a heating element 4 placed in the hole 2 of the insole 1 and then the heating elements 4 on both sides of the insole 1. The insole 1 in which the metal mesh electrode 3 is attached so as to cover the insole 1 and the connection terminal 5 is attached to the side end of the arch of the insole 1 is shown. FIG. 1D shows an insole 1 having a film (hereinafter referred to as a protection sheet) 6 as a protective cover adhered to both sides of the insole 1 to prevent the metal mesh electrode 3 and the heating element 4 from falling off. Is shown. The heating element 4 is shown in FIG.
As shown in FIG. 2, a sheet-like flexible heating element 7 in which conductive powder is uniformly mixed with silicone rubber or the like, and a metal mesh adhered as electrodes 8 to both sides of a sheet-like flexible heating element 7 are formed into a desired shape. It is obtained by punching or cutting. The heating element 4 manufactured in this manner is excellent in flexibility.

Various rubbers can be used for the base material of the flexible heating element used for the heating element. For example,
In addition to natural rubber, synthetic rubber such as silicone rubber, urethane rubber, polybutadiene rubber, SBR rubber, NBR rubber, EP rubber, and EPT rubber can be used. In particular, silicone rubber is preferred in terms of durability and flexibility. The heating element is obtained by adding a conductive powder to these unvulcanized rubbers, mixing them uniformly, forming them into a sheet, and then vulcanizing them.

As the conductive powder, carbon black,
Fine particles such as graphite and metal can be used. Powders of copper, gold, silver, platinum, aluminum, iron, nickel and the like can be used for the metal particles. In addition, those obtained by adding finely cut carbon fibers to these can also be used.

For the electrodes bonded to both sides of the sheet-like heating element, a net woven with a thin metal wire such as copper having high conductivity is used. A heating element is obtained by bonding such a metal mesh electrode to both sides of a sheet-like heating element. This heating element
It has excellent flexibility and can generate heat at low voltage.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The insole used for the winter shoes of the present invention is attached to a portion where a heating element which generates heat by energization is desired to generate heat. This insole is shown in FIG. 1 (d), but this is an example, and the present invention is not limited to this. FIG.
A hole 2 for receiving the heating element 4 is formed in the insole 1 shown in FIG. Hole 2 for heating element 4
Are provided at the toe, three at the arch, and one at the heel, but the position, number and shape of the holes 2 are arbitrary.

The heating element 4 is placed in the hole 2 of the insole 1
The insole 1 is connected by metal mesh electrodes 3 adhered to both sides. Further, a connection terminal 5 for connection is provided at a side end of the arch.
Is attached (see FIG. 1C). Furthermore, the protective sheet 6 is coated on both sides of the insole 1 by adhesion or heat fusion. The bonded (or heat-sealed) portion of the protective sheet 6 is indicated by a shaded portion in FIG. The covering with the protective sheet 6 may be either covering the entire insole or covering leaving a part as shown in FIG. As the protective sheet 6 coated on both sides of the insole, a heat flexible film having a thickness of about 20 to 100 μm is used.

Power is supplied to the heating element by carrying the battery and connecting it to the connection terminal. The insole of this embodiment has a thickness of 1 mm for both the insole and the heating element, the total area of the heating element is approximately 20 cm ² , and the power supply battery is two single alkaline batteries (3 V), which differs depending on the shoes used. , About 3
It can generate heat at 5 ° C. (outside temperature 20 ° C.) for 7 hours.

[0013]

The winter shoes of the present invention can easily be heated to a desired temperature by a portable battery by using the insole having the above-mentioned structure, which is very suitable for a cold region.

[Brief description of the drawings]

1 (a) to 1 (d) are schematic plan views showing a procedure for manufacturing an insole having a heat-generating function, which is used for a cold-shoe according to the present invention.

FIG. 2 is a cross-sectional view of a heating element used for an insole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... insole 2 ... hole 3 ... metal mesh electrode 4 ... heating element 5 ... connection terminal 6 ... protective sheet 7 ... heating element 8 ... electrode

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masamitsu Takami 4-1-1, Yotsuya, Shinjuku-ku, Tokyo F-term (reference) 4x050 DA16 DA17 DA17 EA01 HA23 HA38 HA44 HA45 HA46 HA51 HA52 HA53 HA88

Claims (3)

[Claims] Claims 1. At least one hole is provided in a portion of a shoe insole where heat is to be generated and a heating element is placed therein. Then, metal net electrodes are attached to both sides of the insole and a connection terminal is connected to one end of the metal mesh electrode. Winter shoes, wherein protective covers are attached to both sides of the insole. 2. The shoe according to claim 1, wherein the heating element is formed by bonding electrodes to both surfaces of a flexible heating element in which conductive powder is mixed with natural rubber or synthetic rubber. 3. The shoe according to claim 1, wherein a connection terminal for supplying power to the heating element is attached to a side end of the arch of the insole.