JPH08224107A - Electrostatic earthing device - Google Patents

Abstract

PURPOSE: To enable, simply by putting shoes on, the discharging of static electricity accumulated in clothes and human body to the earth, by equipping the lower surface of flat insole with a materially electroconductive earthing shaft which vertically penetrates the sole of shoe. CONSTITUTION: An earthing shaft 3 is penetrated downward from inside the shoe 4, while an insole 2 is placed in touch with on the upper sole surface of shoe 4. Then, the downward protuberant part of earthing shaft 3 is cut off on the lower sole surface of shoe. When a person puts the shoes 4 on, the insole 2 touches his heel either directly or through his high-humidity sock. When the sole of shoe 4 is pushed down by the body weight loaded on the shoe 4 during his walking, the earthing shaft 3 protrudes from the lower sole surface of shoe and touches the earth. Therefore, it enables the discharging of static electricity accumulated in clothes and human body through the earthing shaft 3 to the earth.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic grounding tool for discharging static electricity generated by friction of clothes to the ground.

[0002]

2. Description of the Related Art Static electricity generated by friction of clothes is accumulated on the human body and clothes, and the accumulated static electricity may be discharged through the human body when a person touches a metal door knob or a car. Receives an unpleasant shock to the discharged part of the human body. In order to prevent such discomfort due to discharge, a static electricity removing device provided with a metal piece or a conductive rubber piece on the ground surface of the footwear has been proposed as Japanese Patent Laid-Open No. 1-93094. Since the bottom of footwear having poor conductivity is interposed between the conductive rubber piece and the human body, it is difficult to discharge static electricity accumulated in clothes and the human body.

Further, a conductive footwear and a conductive sheet for footwear, in which a conductive sheet is attached to the outer surface of the rear end of the footwear, and the upper surface and the lower surface of the bottom of the footwear are connected by the conductive sheet, is proposed as JP-A-6-277102. ing. However, this is not only bad in appearance because the conductive sheet is exposed on the outer surface of the rear part of the footwear, but also the conductive sheet is easily removed.

[0004]

DISCLOSURE OF THE INVENTION The present invention can discharge static electricity accumulated in clothes and a human body to the ground simply by wearing footwear, thereby preventing an unpleasant shock due to discharge from the human body. It is possible to provide an electrostatic grounding tool that is capable of being exposed to the outside of the footwear, has a good appearance, and is not likely to come off during wearing.

[0005]

In order to achieve the above object, an electrostatic grounding tool of the present invention comprises a conductive material,
A grounding shaft that penetrates the bottom of the footwear is provided on the lower surface of the flat insole plate.

[0006]

[Function] In a portion such as a heel portion of footwear that surely contacts the ground when walking, the grounding shaft is penetrated downward from the inside of the footwear and the insole plate is brought into contact with the upper surface of the bottom of the footwear.
Cut off the part protruding from the bottom bottom surface of the grounding shaft. If you wear footwear with an electrostatic grounding device, the insole plate of the electrostatic grounding device may come into contact with the heel of the wearer directly or through socks in a high humidity state, and when walking, your weight is added to the footwear and the bottom of the footwear is pressed. The grounding shaft of the static electricity grounding tool projects from the bottom surface of the bottom and comes into contact with the ground, and as a result, the static electricity accumulated in the clothes and the human body is discharged to the ground through the grounding shaft.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. The electrostatic grounding tool 1 is made of a conductive material such as copper or a copper alloy, and as shown in FIG. 1, a flat insole plate 2 and a grounding shaft 3 projecting from the lower surface of the insole plate 2 at a substantially right angle. Consists of.

In the embodiment shown in the drawings, the insole plate 2 is formed in a disk shape having a diameter of about 1.5 cm, and the thickness thereof is set to about 0.5 to 1 mm so that the operator does not feel uncomfortable when stepping on the sole of the foot. ing. The grounding shaft 3 is formed to have a thickness of about 0.7 to 1 mm so that buckling does not easily occur when penetrating the bottom of the footwear, and the resistance does not become too large. It is about 6 to 7 cm so that it completely penetrates the bottom of the. Further, the upper end of the grounding shaft 3 is abutted on the center of the lower surface of the insole plate 2, and is fixed by means such as brazing which does not hinder the conductivity.

The electrostatic grounding tool 1 is used as follows. As shown in FIG. 2, the grounding shaft 3 is penetrated downward from the upper surface of the bottom portion 5 of the footwear 4, and the insole plate 2 is brought into contact with the upper surface of the bottom portion 5 to project from the lower surface of the bottom portion 5 of the grounding shaft 3. Cut the part. In addition, in the bottom part 5 of the footwear 4, the static electricity grounding tool 1 is such that the lower surface surely contacts the ground when walking.
It is recommended to attach it to the heel of the wearer's foot where it does not cause discomfort or pain.

When the footwear 4 having the electrostatic grounding tool 1 attached thereto is worn as described above, the insole plate 2 placed on the upper surface of the bottom portion 5 contacts the sole of the wearer. And when the wearer walks,
The bottom 5 of the footwear 4 is compressed by the weight, and as a result, the grounding shaft 3
The lower end of is exposed below the bottom 5 and comes into contact with the ground, and the static electricity accumulated in the human body is discharged to the ground through the grounding shaft 3.

The plane shape and area of the insole plate 2 and the length of the grounding shaft 3 can be appropriately changed according to the shape of the footwear 4 and the like. Further, the electrostatic grounding tool 1 can be formed of a conductive material other than copper or a copper alloy, but since copper has extremely high conductivity and also has an effect of suppressing the growth of bacteria inside the footwear, the electrostatic grounding tool 1 It is the most suitable material.

[0012]

EFFECTS OF THE INVENTION The electrostatic grounding tool of the present invention reliably discharges static electricity accumulated in clothes and a human body to the ground with a walking motion only by wearing footwear having a grounding shaft penetrating through the bottom. Therefore, when the human body touches a metal product or the like, static electricity is not discharged through the contact portion, and therefore an unpleasant shock due to discharge from the human body can be prevented.

Further, since the insole plate is in contact with the upper surface of the bottom portion of the inside of the footwear and the grounding shaft penetrates the bottom portion of the footwear, it is not exposed to the outside of the footwear, and not only the appearance is good, but also the building. Alternatively, you do not have to worry about bumping out of the road or coming off.

[Brief description of drawings]

FIG. 1 is a perspective view of an electrostatic grounding tool showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of footwear equipped with an electrostatic grounding tool.

[Explanation of symbols]

 1 electrostatic grounding tool 2 insole board 3 grounding shaft 4 footwear 5 bottom

Claims (2)

[Claims] 1. An electrostatic grounding tool made of a conductive material, wherein a grounding shaft penetrating the bottom of the footwear is provided on the lower surface of a flat insole plate. 2. The electrostatic grounding tool according to claim 1, wherein the conductive material is copper or a copper alloy.