JPH1083891A - Earth sheet to be used for door of automobile or building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharging electric charge through a human body who touches a door at the time of normal door handling and easily eliminate static electricity by sticking an earth sheet of which at least the surface is conductive on portions of a door where hands are expected to touch. SOLUTION: An earth sheet 1 which is provided with conductivity and produced by forming a metal thin film on the surface of a substrate film having an adhesive layer is stuck on portions such as handles 11 of doors of an automobile, a building, etc., where human hands touch. Moreover, it is preferable that the earth sheet 1 is stuck on doors 10 in a prescribed surface area or wider to carry out earthing by atmospheric discharging from the surface or the sheet is connected to a chassis of an automobile to carry out earthing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door,
Alternatively, the present invention relates to an earth sheet which is stuck to a place touched by a human such as a door knob of a door of a building and prevents air discharge from a charged fingertip of a human body and electric shock due to the discharge.

[0002]

2. Description of the Related Art When an automobile is moved up and down, if the user touches a door or the like, a charged person's fingertip may discharge the door to the door. This is because the human body is charged by frictional static electricity due to friction between the seat and the clothes. In particular, since the fingertip is a sensitive part of the human body, it is susceptible to electric shock such as unpleasant pain due to electrostatic discharge. Alternatively, even in a building, there is a case where the battery is charged by frictional static electricity with a floor while walking, and when a door knob such as an entrance is touched, a discharge is also generated between the fingertip and the electric shock, which may cause an electric shock.

[0003] Automotive coatings are often insulating.
However, such insulation is not completely uniform, that is, the electric resistance of the door surface is generally uneven. Therefore, for example, when a certain point on the door surface is relatively conductive even if it is slightly smaller than the surroundings, the discharge is made as a point-like electrode. However, such a point-like electrode causes an increase in charge density at the time of discharge, so that electric shock to the fingertip is further increased. On the other hand, a door knob of a building or the like is generally made of metal and naturally a conductor, but if the door body is made of wood, it is insulated from the ground, that is, is not grounded. Therefore, also in this case, electric discharge is caused between the fingertip and the door knob, and the electric shock is also caused.

[0004] In order to avoid such a situation, there is a method of eliminating the charged electric charge on the human body side. For example, in the case of an automobile, the key cylinder of the door is grounded to the chassis, so that the key cylinder can be touched with the key held by the user to remove electricity and prevent discharge. In addition, a static elimination pad attached to the inside of a vehicle has also become widespread. On the other hand, in the case of a room doorknob, there is a method of removing electricity by touching the doorknob with the palm before touching the finger, and even if it discharges, the palm is not as sensitive as the fingertip, so there is no electric shock, so There is no unpleasant shock such as pain.

[0005]

[0005] However, there are not many people who frequently perform such static elimination on the human body side, and they are inadvertently discharged and each time they experience an unpleasant electric shock. .

Therefore, the present invention can be easily applied to a conventional car or building door, and it is not necessary to perform an extra operation for removing static electricity when opening and closing the door. And a ground sheet used for a door which can easily remove static electricity.

[0007]

According to the present invention, in a door of an automobile or a building, a conductive sheet is applied at least to a surface of a door touched by a normal door operation. The charge was released to eliminate the charge. The front surface refers to the outer surface of the two front and back surfaces of the earth sheet when the earth sheet is adhered, that is, the surface that is not the adhered surface. As the ground sheet, a base film coated with metal can be used. Alternatively, a metal film may be laminated on a base film. Further, only the metal film may be used as it is as the ground sheet. As long as the metal is coated, a method by vapor deposition and any other known methods may be used. In addition, there is a method of performing metal sputtering on the surface of the base film. In this case, a coating having a high metal density can be performed, so that high conductivity can be obtained on the surface. A resin film can be used as a base film for coating or laminating. For example, if a polyester film is used, a polyethylene terephthalate film is a preferable example. Adhesion to the door may be performed by any known method. However, if an adhesive layer is formed on the back surface of the ground sheet and covered with release paper, it can be easily adhered as needed. In the case of an automobile door, the portion to be stuck is suitable because the door handle and the vicinity thereof are most often touched. For building doors, you may attach an earth sheet directly to the doorknob. Even if the charged fingertip approaches when the door is normally opened and closed, the ground sheet is grounded on the counter electrode side, which is inductive by the charge of the fingertip, so that no discharge occurs between the ground sheet and the fingertip.

Further, in the case of an insulated conductor such as a metal door handle of an automobile or a metal door knob of a building, if the conductor is grounded and is not in an insulated state, discharge from a fingertip is eliminated. Therefore, if a ground sheet is attached to a door handle or the like, which is conductive not only on the front surface but also on the back surface, and is grounded, no discharge occurs even when a charged fingertip is brought close. This is because the back surface of the ground sheet becomes an electrical connection portion with the door knob. At the time of sticking, a conductive adhesive can be used if necessary.

In addition, an air discharge is performed directly from the sheet surface by a method of grounding, and for this purpose, the size of the ground sheet is set to a predetermined area or more required for the air discharge. The aerial discharge is determined by the atmospheric conditions, the surface resistivity of the ground sheet, the decay characteristic of the charged potential, and the like, in addition to the amount of charge flowing into the ground sheet.

In the case of an automobile, there is a method of connecting to a chassis to ground. For example, there is a method in which the ground sheet attached to the outside of the door is extended and folded inside the door, the folded portion is brought into contact with the body side, and finally grounded to the chassis. Alternatively, similarly, if the folded portion is folded back to the inside of the door, and the folded portion is brought into contact with the exposed metal portion inside the door, the chassis is grounded via the hinge of the door.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 shows an earth sheet 1 according to claims 1 and 2, wherein the earth sheet 1 is made of polyethylene terephthalate.
Metal thin film 3 on the surface A side of base film 2 made of
Is coated. On the back surface, an adhesive layer 4 is coated, and a release paper 5 is further laminated.

When the ground sheet 1 is attached to the door of an automobile, a location near the door handle 11 near the door handle 11 where it can be easily touched by humans is suitable, as shown in FIG. Also, the metal coated surface A is directed outward when it is attached. The ground sheet 1 is partially extended and attached to the door handle 11, and is folded back on the back surface of the door handle 11 as shown in FIG.

As described above, in the automobile, fingertip discharge is most likely to occur at the time of getting off the vehicle. However, since the ground sheet 1 is attached to the periphery near the door handle which is most frequently touched,
There is no discharge even when the charged fingertip is brought close. In addition, when riding, the user first puts his / her hand on the door hand 11, but the door handle 11 is covered with the ground sheet on both the front and back surfaces, so that there is no fear of causing electric discharge.

In the case of a car, the appearance is important, but the appearance and the like are important. However, it is only necessary to devise a variety of colors and designs. . If the color is devised, it is possible to make it green, red, yellow, etc. by selecting the type of metal to be coated. Alternatively, there is a method of changing the color and gloss by rusting or other chemical treatment after coating. Alternatively, a transparent ground sheet can be obtained by thinning the base film and the metal coating layer, and in this case, the body color of the car can be utilized. In particular, unlike the first embodiment, if only the metal film is used as it is as the ground sheet, it becomes easier to make the film thinner and a film having excellent transparency can be obtained. Further, if it is made translucent, it becomes a relatively similar color close to the body color, and the color tone can be made uniform. Another example of the use of the translucent ground sheet is an example in which the sheet is attached to a window glass of an automobile. In this case, it is preferable to select a substrate sheet that can remove ultraviolet rays or the like, because it can also serve as a wind film that has been widely used in recent years. Further, by performing the above-described process of applying a color or the like to a material having such transparency, a colored earth sheet having transparency can be realized, and the design is excellent. Alternatively, the base film itself may be devised such as color and gloss.

The shape of the earth sheet may be provided by a person skilled in the art in a fashionable sticker shape. Further, an earth sheet adapted to the door shape may be prepared for each vehicle type and provided as optional equipment for the vehicle. Further, it may be provided as a raw roll, which may be used for a handmade sticker such as cutting out to a customer's preference. The metal used for coating or the color and gloss to be applied does not need to be single, and may be mixed in any way in consideration of the design.
Alternatively, it is not necessary to determine the conductivity of the entire surface, and a mere sheet portion having no conductivity may be partially included as long as it functions as an earth sheet. Further, in the above-described embodiment, an example of application to a car door has been described.

Embodiment 2 The following ground sheet 1 is also used.
Embodiments according to the first and second aspects of the present invention have a conductive pressure-sensitive adhesive layer on the back surface of the conductive sheet. Examples of the conductive sheet include a resin sheet in which metal powder is mixed. Alternatively, a metal coating may be applied to both sides of a resin base film having small holes, and the coated surfaces on the front and back may be electrically connected via a metal filling the small holes at the time of coating. The pressure-sensitive adhesive is made conductive by kneading carbon powder, metal powder, or the like. A release paper is attached to the adhesive and is prepared for use.

As an application example, the present invention can be applied to a door 20 of a building or the like. As shown in FIG. 4 and FIG. This is preferably a vertically long shape which does not protrude from the door frame 23 and has a predetermined area required for discharge. In this case, the back surface of the ground sheet 1 is adhered by the conductive adhesive, so that the metal door knob 21 and the ground sheet 1 are electrically connected. Therefore, in the case of a wooden door 20 or the like, the door knob 21 which is conventionally insulated is used.
Is grounded by air discharge from the sheet surface A of the ground sheet 1. Therefore, especially when walking on the floor of a carpet of a hotel or the like, discharge occurs when the door knob 21 is touched. In the door knob 21 to which the ground sheet 1 is adhered as in this embodiment, such discharge is prevented. Can be. In addition, when closing the opened door 20, the door frame 23 or the like is often pushed directly, but by sticking it to a place where it is usually touched, static electricity is removed every time it comes in and out, so human body is removed. Helps to reduce the amount of charge on the surface. Therefore, not only is there no electric shock from the door knob to which the ground sheet is attached, but also it is hard to receive electric shock when touching a door knob on which no other electric shock prevention measures are taken.

The color, gloss, shape, and the like may be variously performed in the same manner as in the above embodiment. In addition, letters and symbols may be freely written on the ground sheet surface, such as opening and closing guidance such as `` push '' and `` pull '', and display according to the place such as `` Please enter freely '' It is convenient to describe.

Another method is to connect the chassis to the chassis of the automobile to ground the ground. In this case, since the ground sheet is used as an electric passage, a predetermined area for air discharge as in the above example is not required. Therefore, a tape-shaped ground sheet may be used, and the sheet may be attached like a border of a door. Then, the tape-shaped end portion is folded back inside the door, and is brought into contact with the body side or the exposed metal portion inside the door, so that it can be finally grounded to the chassis.

[0020]

As described above, according to the invention of the earth sheet used for the door of the automobile or the building according to the first aspect of the present invention, "at least the surface is conductive, and it is attached to the place where the door of the automobile or the building can be touched manually. To be done. "
Therefore, it can be easily applied to cars or building doors,
In addition, when opening and closing the door, there is no need to perform extra operations for static elimination, and static electricity charged to the human body can be easily eliminated only by normal door operation, so there is no discharge from the charged fingertip of the human body, As a result, there is an effect that electric shock is not received. Further, according to this ground sheet, it can also be used as a sticker, and can be used for giving decorativeness. Also, if it is used for a building door, it can be used for various kinds of guidance displays.

According to a second aspect of the present invention, the earth sheet according to the first aspect is characterized in that "the ground is formed by air discharge from a sheet surface having a predetermined area or more". Therefore, in addition to the effect according to the first aspect, since there is no need for ground connection, it can be easily attached, and the degree of freedom of the attachment location and shape is increased. In particular, it is excellent to be used as a decorative sticker for automobiles.

According to a third aspect of the present invention, there is provided an earth sheet according to the first aspect, which is used for a door of an automobile, wherein the ground is connected to a chassis of the automobile. Therefore, in addition to the effect according to the first aspect, the ground can be easily taken, and the exposed surface to the part that can be seen by the user can be small, and decoration with a linear pattern, for example, is also possible.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a cross-sectional structure of an earth sheet according to a first embodiment. An adhesive layer and release paper are added to the back surface of the earth sheet according to claims 1 and 2, and a part of the release paper is peeled off. Is shown.

FIG. 2 is a view showing a sticking portion when the ground sheet of FIG. 1 is stuck to a door of an automobile.

FIG. 3 is an explanatory view when the ground sheet of FIG. 1 is attached to a door handle of an automobile.

FIG. 4 is a diagram illustrating a method of attaching an earth sheet according to a second embodiment.

FIG. 5 is a diagram illustrating a method of attaching an earth sheet according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground sheet 2 Base film 3 Metal thin film 4 Adhesive layer 5 Release paper 10, 20 Door 11 Door handle 21 Door knob

Claims (3)

[Claims] 1. An earth sheet used for a door, wherein at least the surface is electrically conductive and is attached to a portion of a door of an automobile or a building which is touched by humans. 2. The ground sheet used for a door according to claim 1, wherein the ground is provided by air discharge from a sheet surface having a predetermined area or more. 3. The ground sheet according to claim 1, wherein the ground sheet is used for a door of an automobile, wherein the earth is provided by connection to a chassis of the automobile.