JP2002075686A - Static electricity removal implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a static electricity removal implement which can confirm neutralization of static electricity by shaking in order to confirm neutralization static electricity without a user making a third person other than the user trouble. SOLUTION: The static electricity removal implement is constituted so that a static electricity input electrode and a static electricity output electrode are separately arranged in a hollow case, which consists of an insulating material, and a resistance is connected in series between the static electricity input electrode and the static electricity output electrode. While arranging a drive unit which vibrates the above case, a control circuit which controls drive time and drive velocity of the above drive unit is arranged. When electric potential difference occurs between the above static electricity input electrode and the above static electricity output electrode, the above control circuit which inputted with generating of the above electric potential difference makes the above drive unit drive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static eliminator for preventing severing or electric shock of a human body due to electrostatic discharge.

[0002]

2. Description of the Related Art When entering or leaving a room in an office or a hotel where a carpet or the like is laid, there is a possibility that electric shock or electric shock may be generated at the moment when a hand touches a door knob or the like.
Especially during the dry season in winter. This is because the human body is charged with static electricity due to friction between shoes and slippers and the carpet by walking on the floor with a carpet. This is an impact caused by the discharge of static electricity.
Electrostatic discharge is particularly likely to occur when touching an object having a large surface area such as a door, a door frame, a window frame, etc., especially when the body is charged with a charge of 2 kv or more. Have been.

[0003] An instantaneous generation of electrostatic discharge from a human body to a conductor such as a metal causes sibiration and electric shock.
As a method of preventing an electric shock, a method of increasing a discharge time of static electricity through a high-resistance body is adopted. The static eliminator using the conventional method has a configuration in which a high-resistance element of 1 Mohm or more is coupled between an electrostatic output electrode and an electrostatic input electrode. In using this static eliminator, the static input electrode of the static eliminator is held by hand, and the static output electrode is brought into contact with a metal such as a door knob.
At this time, the static electricity flows to the door knob or the like through the high-resistance body rather than the human body. However, since the static electricity flows slowly through the high-resistance body, no stiffness or electric shock is felt.

[0004]

As a method for confirming whether or not static electricity has been removed by using a static eliminator, Japanese Patent Application Laid-Open No. Hei 8-175 filed by the present applicant has been disclosed.
JP-A-92-23793 discloses a method of making a judgment based on light emitted from a light emitting diode, and JP-A-9-237693 discloses a method of making a judgment based on a sound produced by a melody IC. However,
Some users of the static eliminator thought that the generation of light or sound during static electricity elimination would cause trouble to third parties other than the user.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a structure in which an electrostatic input electrode and an electrostatic output electrode are separately arranged in a hollow case made of an insulating material. A static eliminator comprising a resistor connected in series between the electrode and the static output electrode,
A drive device for vibrating the case is arranged,
A control circuit for controlling a driving time and a driving speed of the driving device is disposed, and when a potential difference occurs between the electrostatic input electrode and the electrostatic output electrode, the control circuit that inputs the generation of the potential difference drives the driving device. The gist of the present invention is to provide a static eliminator that is characterized in that the tool is made to perform static elimination.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION When a user holds an electrostatic input electrode of a static eliminator by hand and brings an electrostatic output electrode into contact with a metal such as a door knob, static electricity flows from a human body to a door knob or the like via a high-resistance body. However, at this time, a potential difference occurs between the static electricity input electrode and the static electricity output electrode, and the potential difference is used as a trigger to drive a mounted vibration motor or other vibration element for a certain period of time to vibrate the entire static electricity removing device. is there.

[0007]

When the user holds the static electricity input electrode of the static electricity eliminator by hand and brings the static electricity output electrode into contact with a metal such as a door knob, the static electricity flows from the human body to the door knob or the like via a high-resistance body. At this time, the static eliminator senses the flow of static electricity, and vibrates a vibration element such as a mounted vibration motor to vibrate the entire static eliminator.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention. Reference numeral 1 denotes a hollow case made of an insulating material. At both ends of the case 1, an electrostatic input electrode 2 and an electrostatic output electrode 3 made of a conductive material are separately attached. In the hollow portion of the hollow case 1, first to fourth resistors 4, 5, 6, and 7 connected in series between the electrostatic input electrode 2 and the electrostatic output electrode 3 are arranged. The resistors 4, 5, 6, and 7 are used to lengthen the discharge time when discharging static electricity. Further, in the hollow portion of Case 1, a two-input negative OR digital IC 8
A timer 9, a driver 10, a battery 11 as a power source of the vibration motor 12, and a toggle switch 14 are provided.

Here, the two-input negative OR digital IC 8 is used for driving the vibration motor 12 by the timer 9 and the driver 10 when static electricity is input to the static electricity input electrode 2. The connection point of the second resistor 5 and the third resistor 6 among the first to fourth resistors is connected to the positive electrode of the battery 11 at the reference voltage point of the two-input negative theoretical sum digital IC 8, The connection point between the first resistor 4 and the second resistor 5 is connected to the first input terminal 8a of the two-input negative OR digital IC 8, and the connection point between the third resistor 6 and the fourth resistor 7 is It is connected to the second input terminal 8b of the two-input negative OR digital IC8. The two-input negative OR digital IC
8 has an output terminal 8c connected to the input terminal 9a of the timer 9. The input terminal 9b of the timer 9 is connected to the resistor 13 and the toggle switch 14, and is connected to the plus electrode of the battery via the resistor 13 and to the minus electrode of the battery via the toggle switch 14. The output terminal 9c of the timer 9 is
Connected to the input terminal 10a of the driver 10,
Is connected to the vibration motor 12. The hole 15 provided in the hollow case 1 is a through hole for turning on and off the toggle switch 14 from the outside.

The hollow case 1 is formed of an insulating material such as a general-purpose resin. Specific examples of general-purpose resins include polyethylene, polypropylene, polyamide, polystyrene, polyester, polyurethane, polycarbonate, polyvinyl chloride, polyepoxy, polyacrylonitrile, acrylonitrile-butadiene-styrene copolymer, acrylonitrile-styrene copolymer And a thermoplastic resin or a thermosetting resin. The shape of the hollow case 1 can be arbitrarily formed by injection molding, press molding or the like of these resins.

The electrostatic input electrode 2 is made of a metal, a conductive tree,
Grease, conductive rubber, conductive ceramic, metal plated
A conductive material such as a resin can be used. Its volume resistivity is
10 ^TenIt should be less than ohm-cm. Static electricity input
The shape of the pole 2 is optional, but this static eliminator is portable.
In this case, a key holder, a chain and the like are attached.

The electrostatic output electrode 3 can be made of a conductive material such as a metal, a conductive resin, a conductive rubber, a conductive ceramic, or a metal-plated resin, similarly to the electrostatic input electrode 2. Further, as the electrostatic output electrode 3, a woven or nonwoven fabric of a stainless fiber web or felt, a synthetic fiber plated with metal, a woven or nonwoven fabric of a synthetic fiber added with a conductive material such as carbon black, or a foamable conductive polyethylene resin A similar foaming conductive urethane resin can also be used. The shape of the electrostatic output electrode 3 is preferably a fibrous shape because it is preferable to have a large surface area in order to easily discharge static electricity, and it is more preferable that the tip has a sharp end. Also, the static electricity output electrode 3 disposed in the hollow case 1 can be partially exposed outside the case 1 or a hole can be provided in the case 1 so that the static electricity can be discharged into the air by flowing air. When the hole formed in the case 1 is in contact with or close to the electrostatic output electrode 3,
Discharge faster. In addition, static electricity can be released by directly bringing the electrostatic output electrode 3 exposed to the outside of the case 1 into contact with a conductive object such as a metal door knob, a metal door frame, or the like, or by approaching a hole of the case 1. .

The static electricity input electrode 2 and the static electricity output electrode 3
, The first to fourth resistors 4, 5, connected in series between
6, 7 extend the electrostatic discharge time and
This is used to set the static electricity detection sensitivity of. The values of the resistors may be the same for all of the first to fourth resistors, or may be different for each. The detection sensitivity can be arbitrarily set by changing the resistance value. In order to reduce the voltage applied to the two-input negative-OR digital IC 8 in order to reduce the voltage applied to the IC, the second resistor 5 and the fourth resistor 7 are compared with the first resistor 4 and the fourth resistor 7. It is better to reduce the value of the resistor 6 of FIG. However, if the values of the second resistor 5 and the third resistor 6 are too small, the detection sensitivity of the timer 9 for detecting static electricity is reduced. Therefore, the first resistor 4 is set to 1 to 20 megaohms, and the second resistor 5 is set to 100 kohm to 1 megohm, the third resistor 6 has a resistance of 100 kohm to 1 megohm,
Preferably, the fourth resistor 7 is between 1 megohm and 20 megohm.

The two-input negative OR digital IC 8 is used as a trigger signal for driving a timer 9 when static electricity is input to the static electricity input electrode 2. TTL is a commercially available 2-input negative OR digital IC.
Type and CMOS type. Where T
The digital IC of the TL system has a drawback that the impedance on the input side is low and a current easily flows, so that the current consumption is large. In addition, a power supply of 5 V is required for operation. On the other hand, since CMOS operates at 2V to 6V, a general-purpose battery can be used, which is preferable.

When static electricity is input to the static electricity input electrode 2, the timer 9 uses a two-input negative OR digital IC 8
And outputs a signal of a specific frequency to the driver 10 for a certain period of time in response to a trigger signal input from the output terminal 8c. The driver 10 supplies a current to the vibration motor by inputting a signal from the timer 9. The resistance 13
By using the toggle switch 14, the duty of the signal output from the timer 9 to the driver 10 can be changed to change the rotation speed of the vibration motor 12.

More specifically, the timer 9 includes a trigger signal input terminal 9a, an output terminal 9c for outputting a specific frequency during a specific time in response to the input of the trigger signal,
An input terminal 9b for changing the duty during the period of the positive (high) level and the negative (low) level voltage of the output frequency
It is composed of The timer 9 is set in advance with the output frequency, the output time, and the duty of the positive (high) level and the negative (low) level voltage period of the output frequency. Therefore, it is preferable to use a programmable CPU or the like having these functions for the timer 9.

The driver 10 has an input terminal 1 for receiving a voltage.
0a and an output terminal 10b for controlling the output of current by the voltage of the input terminal 10a. For example, by applying a positive (high) level potential to the input terminal 10a, a specific current flows from the output terminal 10b,
By applying a negative (low) level potential, no current flows. That is, the potential output from the timer 9 is input, and the potential is used to supply a current to the vibration motor 12 from the output terminal 10b. This driver 10 includes
A transistor or the like which can control current is preferable.

The vibration motor 12 is supplied with a current from the terminal 12a, so that the vibration motor 12 vibrates, and the vibration can cause the entire case 1 to vibrate. It is preferable that the vibration motor 12 is small and has low current consumption. In this embodiment, the vibration motor 12 is used. However, a solenoid or a piezoelectric element that generates vibration may be used.

The toggle switch 14 has a function of switching between an ON state and an OFF state each time the switch is pressed, and has a function of maintaining the state when pressed even after the toggle switch 14 is released. By this function, in the off state, the input terminal 9b of the timer 9
A positive (high) level voltage is applied via the resistor 13, and in the ON state, a negative (low) level voltage is applied to the input terminal 9 b of the timer 9 because the toggle switch 14 conducts. A switch, such as a tact switch, that is turned on when pressed and turned off when released, can be used by changing the setting of the timer 9. If the input terminal 9b of the timer 9 is an A / D input terminal of the timer 9 having an A / D (analog-to-digital converter), instead of the toggle switch 14,
A variable resistor or the like can be used, and the timer 9 can set the rotation speed of the vibration motor 12 more precisely.

The battery 11 is a two-input negative OR digital IC.
8, a power source for operating the timer 9, the driver 10, and for driving the vibration motor 12. As the battery 11, a commercially available general-purpose battery can be used. Button batteries, coin batteries, and cylindrical batteries can be used. Primary batteries such as manganese batteries, silver batteries, alkaline batteries, lithium batteries, air batteries, and nickel-
Secondary batteries such as a cadmium battery, a lead battery, a lithium ion battery, and a nickel metal hydride battery can be used. Operating voltage is 2
Since V to 6 V is sufficient, the battery type may be arbitrarily selected and set to a predetermined operating voltage.

The hole 15 provided in the hollow case 1 is a through hole for pressing the toggle switch 14. In addition, a protective cover such as a mylar sheet is attached to the hole 15,
It is also possible to press the toggle switch 14 via the protective cover.

The operation of the vibration motor 12 when static electricity is input will be described with reference to the equivalent circuit shown in FIG. When the electrostatic input electrode 2 is in contact with the positively charged body, the potential of the positive electrode of the battery 11 is set as the reference voltage point of the 2-input negative OR digital IC 8,
The input indicated by the input terminal 8a of the two-input negative-OR digital IC 8 becomes a positive (high) level which is full of the positive-side clamp level, and the discharge current flows from the second resistor 5 to the third resistor 6, so that two inputs are provided. The second of the negative OR digital IC8
Is at a lower level than the battery voltage at the reference voltage point. At this time, if the charge amount of the charged body is sufficiently large, the voltage of the second input terminal 8b becomes lower than the input threshold voltage of the two-input negative OR digital IC8. Therefore, the output of the two-input negative OR digital IC 8 is a negative (low) level output.

On the other hand, when the electrostatic input electrode 2 is in contact with the negatively charged body, the voltage of the second input terminal 8b is a voltage that is higher than the battery voltage at the reference voltage point by the full positive clamp level, The voltage of the first input terminal 8a drops below the threshold voltage of the two-input negative OR digital IC 8, and the output of the two-input negative OR digital IC 8 also becomes a negative (low) level output.

When the static electricity input electrode 2 comes into contact with the static electricity charged body, the static electricity is conducted to the static electricity output electrode 3, and the static electricity is discharged and discharged, and the static electricity is removed. At this time, if static electricity is input to the two-input negative-OR digital IC 8 even for a moment, the timer 9 connected thereto is operated, and outputs to the driver 10 at a specific frequency during a specific time. 12 is driven.

[0025]

As described above in detail, the static eliminator according to the present invention can prevent sibiration and electric shock due to momentary discharge of static electricity and can detect the generation of static electricity by vibration of the vibrating element. In other words, since the sound reduction effect is not notified to the user by sound or light, the static eliminator can be used without worrying about the surrounding situation.

[Brief description of the drawings]

FIG. 1 is a block diagram of a circuit showing one embodiment of the present invention.

FIG. 2 is an equivalent circuit of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Static electricity input electrode 3 Static electricity output electrode 4 First resistor 5 Second resistor 6 Third resistor 7 Fourth resistor 8 Two-input negative OR digital IC 8a First of two-input negative OR digital IC Input terminal 8b Two-input negative OR digital IC second input terminal 8c Two-input negative OR digital IC output terminal 9 Timer 9a Timer first input terminal 9b Timer second input terminal 9c Timer output terminal Reference Signs List 10 Driver 10a Driver input terminal 10b Driver output terminal 11 Battery 12 Motor 12a Motor first terminal 12b Motor second terminal 13 Resistance 14 Toggle switch 15 hole

Claims (1)

[Claims] 1. An electrostatic eliminator comprising: an electrostatic input electrode and an electrostatic output electrode separated from each other in a hollow case made of an insulating material, and a resistor connected in series between the electrostatic input electrode and the electrostatic output electrode. A driving device for vibrating the case, and a control circuit for controlling a driving time and a driving speed of the driving device, wherein a potential difference occurs between the electrostatic input electrode and the electrostatic output electrode. And a control circuit that inputs the generation of the potential difference and drives the driving device.