JPH11214190A - Static electricity shock prevention tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a static electricity shock prevention tool which has a simple configuration, at low cost, and can prevent a shock and uncomfortable feeling due to discharge effectively. SOLUTION: This static electricity shock prevention tool consists of a main body 2 consisting of an insulation elastic body fixed on a discharge object 10 and an electricity conducting body 3 fixed at an adequate section of the main body 2. The main body 2 holds the electricity conducting body in non contact with the discharge object usually, is elastically deformed when the electricity conducting body is pressed by a human body, etc., to bring the electricity conducting body into contact with the discharge object electrically, and returns to its original shape elastically when the pressure is released to let the electricity conducting body leave the discharge object.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing electrostatic shock, and more particularly to a device for discharging static electricity generated between a human body when a door knob is gripped and opened and closed, while having a simple and low-cost structure. The present invention relates to an electrostatic shock preventer which effectively prevents a shock caused by an electric shock.

[0002]

2. Description of the Related Art In the dry season when the humidity in the air decreases, as in winter, static electricity stored in the human body and clothes causes discharge when the human body, especially a finger, etc. touches a metal such as a door knob. In addition, it is easy to receive a shock due to the discharge and discomfort. In addition, with the increase in the density of ICs used in electronic devices, the breakdown voltage of the ICs has been reduced, and repeated voltage shocks have been regarded as a problem. As a measure to prevent such an electrostatic shock, a measure against an electrostatic generation source by spraying an antistatic liquid or the like by a spray, or a discharge method of carrying a discharge prop and discharging between a human body and a discharge target. Although various measures have been taken, it is not the case that all people cannot always carry a spray or prop to prevent a shock, so that the electrostatic shock still does not disappear. To describe this in more detail, as another conventional method for preventing the generation of static electricity, the humidity in the air is 6
0% or more, a method to refrain from using plastic products such as plastics that are likely to generate static electricity (for example, clothing, carpets, daily necessities, etc.) Although these methods may be effective in some situations, they are insufficient as means for ordinary people to effectively prevent electrostatic shock in various environments of daily life. That is, for example, it is impossible to maintain the humidity at 60% or more outdoors, so that the use of resin products that are likely to be a source of static electricity is refrained from being used, and daily operations of human beings are always performed while keeping in mind the prevention of static electricity generation. It is impossible and unrealistic. In addition, when the door or doorknob used in automobiles, houses, offices, factories, research laboratories, etc. is made of metal, if humans or clothes come into contact with these metal parts in a charged state, shock due to electric discharge, It is clear from experience that discomfort frequently occurs, and no effective discharge countermeasure has been developed so far.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a simple and low-cost structure, and can effectively prevent the occurrence of shock and discomfort due to discharge. It is to provide a preventive tool. Specifically, for example, an object of the present invention is to effectively prevent static electricity generated between a human body when a door knob is opened and closed, and a shock caused by the discharge. It is another object of the present invention to effectively prevent an IC mounted on a printed circuit board from being damaged by a discharge voltage flowing from a human body or the like to an electronic device.

[0004]

In order to achieve the above object, the present invention is directed to a main body made of an insulating elastic body fixed to a discharge object, and a conductive body fixed to a proper position of the main body. The main body normally holds the conductor in a non-contact state with the object to be discharged, while the body is elastically deformed when the conductor is pressed by a human body or the like, so that the conductor is deformed to the object to be discharged. When the pressurization is released, the conductor is elastically returned to its original shape to separate the conductor from the discharge target. The invention according to claim 2 is characterized in that the electrostatic shock preventer is fixed to a grip portion of a metal doorknob as an object to be discharged, so that the conductor contacts the metal doorknob when gripping. . The invention according to claim 3 is characterized in that the electrostatic shock preventer is detachably fixed to an object to be discharged. The invention according to claim 4 is characterized in that the electrostatic shock preventer is configured to be portable.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. FIG. 1A is a cross-sectional view of an electrostatic shock arrester according to an embodiment of the present invention.
Is composed of a main body 2 made of an insulating elastic body fixed to the discharge object 10 and a conductor 3 fixed in place on the main body 2. In this embodiment, the main body 2 is a thin bowl-shaped body made of an insulating elastic material such as rubber or resin, and is always in a retracted position indicated by a solid line (when not pressed), and
Is kept in a non-contact state with the discharge object 10. The conductor 3 is made of, for example, a conductive metal material having a cross section of an ellipse (including an ellipse and an oval shape), and is fixed to the top of the main body 2. It is exposed inside. When the electric conductor 3 is pressed toward the discharge object 10 by the human body 11 such as a finger, the main body 2 is elastically deformed as shown by a dotted line to electrically contact the electric conductor 3 with the discharge object 10. When the pressurization is released, it returns to its original shape by a spring action and operates to separate the conductor from the discharge target. Note that the shapes and positional relationships between the main body 2 and the conductor 3 are merely examples, and are not limited to those illustrated. Further, as the conductor 3, other than metal, resin, rubber, or the like having a resistance of about 100 Mohm or less may be used. This is because a material having such a resistance value can exhibit a conduction effect equivalent to that of a conductor against high-voltage static electricity. Therefore, in the claims, the conductor is not limited to a metal material but includes all materials having an electric resistance of a certain value or less.

FIG. 1B is a diagram showing the principle of the protection device of FIG.
The electrostatic shock is eliminated by the switching action of the preventive device 1 interposed between the charged human body 11 and the discharge object 10. That is, by pressing the conductor 3 of the preventive device 1 with the finger of the human body 11 to bring the conductor into contact with the surface of the discharge object, the finger discharges the discharge object via the conductor 3 to reduce the potential difference. It is set to 0 V to eliminate any electrostatic shock. When a human finger holding static electricity comes in direct contact with a discharge object made of metal, the discharge between the fingertip and the metal directly shocks the fingertip,
When using an anti-shock device, the fingertip does not directly touch the metal, and the discharge occurs at the contact between the conductor and the discharge target. There is no pleasure. This principle is, for example, the same as that when a driver opens the door of the driver's seat of a car, a metal key is brought into contact with the door knob in advance to discharge and then the door knob is gripped by hand to prevent shock due to discharge. It is a principle.

Next, FIG. 2 is a sectional view of an essential part showing an example of a structure in which the above-mentioned electrostatic shock preventer is mounted on a knob of a vehicle door, and shows a discharge object provided on the outer surface of the vehicle body 20. When the preventive device 1 of the present invention is attached to the inner surface of the door knob 21 and the finger is pulled out in the direction of the arrow by grasping the door knob 21 by hand, a finger moves the conductor 3 to the door knob 21.
It is configured to discharge by contacting the inner surface of the.
Of course, the shape of the preventer 1 used in this embodiment, particularly the shape of the main body 2, is set so as to conform to the shape of the door knob 21, and the main body 2 is fixed to the door knob 21 by adhesion, suction, welding, or the like. I do. If it is not necessary in summer or the like, it may be configured to be detachable and attached and used only in winter.

Next, FIG. 3 shows an example in which the preventive device of the present invention is applied to a door knob 26 used for a door 25 of a house or the like. A plurality of prevention devices 1 are attached. Prevention equipment 1
It is preferable that the attachment point is a point that is always grasped when the door knob 26 is grasped by hand. For example, a plurality of prevention tools are provided at intervals of 90 degrees, 120 degrees, or 180 along the peripheral surface of the door knob. Thus, when the door is gripped, the conductor always contacts the conductor 3 of one of the preventive devices 1 and comes into contact with the surface of the door knob 26.
Alternatively, it may be arranged at a position other than the peripheral surface of the Noah knob, for example, at the top.

In each of the embodiments shown in FIGS. 2 and 3, the protection device 1 is held by hand to bring the conductor 3 into contact with the discharge objects 21 and 26, thereby discharging static electricity accumulated in the human body or the like. It is possible to effectively prevent shock and discomfort caused by discharge generated when the human body comes into direct contact with the discharge target. In each of the above-described embodiments, an example has been described in which an electrostatic shock is completely eliminated by previously attaching a preventive device to an object to be discharged, gripping the object to be discharged, and pressing and discharging the conductor when the object is in contact with the object. However, the preventive device of the present invention is also used as a means for eliminating a direct discharge between a human body by carrying the device and allowing a wearer to contact an arbitrary discharge target and discharge in advance. can do.

FIG. 4 is a cross-sectional view showing the use state of an example of such a portable electrostatic shock arrester, with the portable arrestor 1 pressed against a discharge object 10 such as a wall surface. By bringing the conductor 3 into contact with the discharge object,
Shock due to discharge can be eliminated in advance. The preventive device 1 can be designed to have an arbitrary size according to preference, so that it can be made compact and suitable for carrying. Next, FIG. 5 is a diagram showing another example of the configuration of the portable type electrostatic shock arrester.
Is a stick type, in which the preventive device 1 of each of the above embodiments is attached to the tip of a rod-shaped holder 31 made of a conductive material (including a low-resistance material). Holds the conductor 3 in a state of being separated from the tip of the holder 31, while the user holding the holder 3 presses the conductor 3 against the discharge target 10 such as a wall surface as illustrated. The conductor 3
When the tip of the holder 31 comes into contact with the tip of the holder 31, discharge occurs. The entire holder 31 does not need to be made of a conductive material, and at least the outer peripheral surface and the tip of the holder 31 may be made of a conductive material, and both may be electrically connected. It should be noted that the above-described objects to be discharged are merely examples, and the preventive device 1 of the present invention can be applied to metals in general that come into contact with human bodies, clothes, and the like in which static electricity easily accumulates. Therefore, for example, by providing metal operation levers, operation buttons, handles, handrails, housings, and the like provided in various electronic devices, electric devices, mechanical devices, and the like, it is possible to effectively eliminate problems caused by electric discharge. . It goes without saying that, by applying the preventive device of the present invention to an electronic device or the like, it is possible to effectively prevent a situation where static electricity damages components such as an IC. Further, the electrostatic shock arrester of the present invention has an extremely simple and low-cost configuration, and has an advantage that the shock due to electric discharge can be effectively and surely prevented while being easily attached to an object to be discharged. .

[0011]

As described above, according to the present invention, there is provided an electrostatic shock arrester capable of effectively preventing the occurrence of shock and discomfort due to electric discharge, with a simple and low-cost structure. it can. Specifically, for example, it is possible to effectively prevent static electricity generated between the human body when the door knob is opened and closed by holding the door knob, and shock caused by the discharge. In addition, the present invention is applied to a discharge object which is a metal member or device other than a door knob and is likely to generate a discharge by contact with a human body or the like which easily accumulates static electricity. This can reliably prevent shock, discomfort, and damage to electronic components and the like.

[Brief description of the drawings]

1 (a) and 1 (b) are a cross-sectional view and a principle explanatory view of an electrostatic shock arrester according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part showing an example in which the preventive device of the present invention is applied to a door knob of an automobile.

FIG. 3 is a sectional view of a main part showing an example of a case where the preventive device of the present invention is applied to a door knob of a house.

FIG. 4 is a configuration explanatory view of a preventive device according to another embodiment of the present invention.

FIG. 5 is a configuration explanatory view of a preventive device according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Prevention tool, 2 main bodies, 3 conductors, 10 discharge objects, 11 human bodies, 20 automobile bodies, 21 door knobs, 25 doors, 26 door knobs. 30 Portable protective device, 31 Holder.

Claims (4)

[Claims] 1. A body consisting of an insulating elastic body fixed to an object to be discharged and a conductor fixed in place on the body, wherein the body always has a conductor fixed to the object to be discharged. While the conductor is kept in a non-contact state, when the conductor is pressed by a human body or the like, it is elastically deformed to bring the conductor into electrical contact with the discharge object, and when the pressure is released, the conductor is elastically deformed. An electrostatic shock arrester characterized by returning to its original shape and separating a conductor from an object to be discharged. 2. A metal door knob as an object to be discharged, wherein said electrostatic shock preventer is fixed to a grip portion of a metal door knob so that a conductor contacts the metal door knob when gripping the metal door knob. The anti-static shock device according to 1. 3. The electrostatic shock preventer according to claim 1, wherein the electrostatic shock preventer is detachably fixed to an object to be discharged. 4. The electrostatic shock preventer according to claim 1, wherein the electrostatic shock preventer is configured to be portable.