JPH04212299A - Antistatic band - Google Patents

Abstract

PURPOSE:To obtain an antistatic band to be worn on a human body easily and to prevent the generation of an electrostatic trouble beforehand by installing a case housing a built-in LED and/or a built-in buzzer to a band made of a fiber material including a conductive fiber. CONSTITUTION:When this charging preventive band 1 is approached to a charged body, the static electricity is neutralized and removed by the function of a corona discharge of a conductive fiber mixed in the band 1. In this case, a part of the static electricity lights an LED 3 built-in to a case 2, and/or sounds a built-in buzzer 4, and it is consumed to report that an abnormal static electricity is generated. As a result, when a worker wears this band around his wrist for use, the generation of harmful static electricity can firmly be caught and reported on in the assembly work of electronic parts and the like, and furthermore, the static electricity is removed efficiently to prevent an interference of the static electricity beforehand.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an antistatic band, and more particularly to a band that is worn on the wrist or the like to remove static electricity from the human body.

[Conventional technology]

If a person's body is charged with static electricity, not only will clothing or dirt cling to the body, but touching a metal part may result in shock. Furthermore, in the assembly work of electronic components, electrostatic discharge may deteriorate the performance of the electronic components or destroy them. To this end, conventionally, expensive testers and the like have been used to check the status of static electricity generation on work tables and the like.

[Problem to be solved by the invention]

As mentioned above, testers have conventionally been used to check the generation of static electricity, but they are not only expensive but also not easily available, and furthermore, they cannot be constantly monitored.

Therefore, the present invention has been developed to prevent static electricity from occurring by easily attaching it to the human body, constantly monitoring the occurrence of static electricity, accurately identifying its occurrence, neutralizing it, and issuing an alarm. The purpose is to provide a prevention band.

[Means to solve the problem]

In the present invention, a band made of a fiber material mixed with conductive fiber is provided, and an L that lights up when it comes close to a charged body is provided on the band.
The above-mentioned problem has been solved by using an antistatic band that is equipped with a case that has a built-in ED and/or a buzzer that sounds.

[For production]

When this band is brought close to a charged object, harmful static electricity is neutralized and removed by the action of the conductive fibers mixed in the band (corona discharge). At this time, a part of the static electricity is consumed to light an LED and/or sound a buzzer to notify that abnormal static electricity has occurred, thereby promoting the static elimination effect.

〔Example〕

Preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of the present invention. In the figure, reference numeral 1 denotes a band having fixing means such as velvet fasteners at both ends, and is long enough to be wrapped around the wrist. The band 1 is manufactured using a fiber material mixed with conductive fibers such as acrylonitrile-copper sulfide composite fibers. Its fiber properties are
For example, diameter 15.6-19μ, conductive film 300-100
0°A, resistance 5.85 x 10-1 to 10-2 Ωcm. 2 is a case attached to band 1, with LED 3
and a piezoelectric buzzer 4 are installed facing outside. Case 2
A replaceable lithium battery 5 and a circuit for driving the LED 3 and piezoelectric buzzer 4 are incorporated inside. FIG. 2 shows an example of the circuit, which consists of a constant voltage supply section A, a timer circuit B, an LED and buzzer drive circuit C, and a buzzer oscillation circuit D. The constant voltage supply section A has an output terminal 6 that supplies a fixed constant voltage and an output terminal 7 that supplies a variable constant voltage. The constant voltage appearing at the output terminal 6 is supplied to one input terminal of the operational amplifier 9, and the constant voltage appearing at the output terminal 7 is supplied to the other input terminal of the operational amplifier 9 via a resistor 8 having a high resistance of, for example, about 1M ohm. supplied to A sensor 1a made of conductive fiber or the like is connected to a connection point between the resistor 8 and the input terminal of the operational amplifier 9 via a diode 10. The output of the operational amplifier 9 is supplied to a CR timer circuit B including a capacitor 11.

The output of timer circuit B is supplied to transistor 12 of LED and buzzer drive circuit C via a resistor. An LED 3 and a buzzer oscillation circuit D are connected between the collector of the transistor 12 and one terminal of the battery 5.

The operation of this circuit is as follows. When the sensor 1a approaches the charged object, the potential at the connection point between the diode 10 and the resistor 8 increases. Along with this, a timer circuit B is provided on the output side of the operational amplifier 9, so even if the sensor 1 is far away from the charged object, the timer circuit B
holds the output. The output of the timer circuit B turns on the transistor 12, lights up the LED 3, and supplies voltage to the buzzer circuit D, causing the buzzer 4 to sound.

The band according to the present invention is mainly worn on the wrist of a worker when processing, assembling, etc. electronic circuit components. When the band 1 approaches a charged object when worn, the action of the conductive fibers and the corona generator mixed in the band 1 induces a charge opposite to that of the charged object, and the surrounding air is ionized. It is thought that the polar ions then move, neutralizing the charge on the charged body, thereby removing static electricity.

〔Effect of the invention〕

The present invention is as described above, and is capable of being worn on the wrist, etc., and is capable of accurately catching and notifying the generation of harmful static electricity during assembly of electronic parts, etc., and efficiently removing static electricity. This has the effect of preventing static electricity damage.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the invention, and FIG. 2 is a diagram showing an example of a circuit according to the invention. Description of symbols 1...band, 2...case 3...LED, 4...buzzer 5...lithium battery, A...constant voltage supply section B...timer circuit C...LED and buzzer drive circuit D...buzzer oscillation circuit Patent applicant Seieiko Industrial Co., Ltd.

Claims (1)

[Claims] [Claim 1] A band made of a fiber material mixed with conductive fibers is provided, and an LE that lights up when it comes close to a charged body.
D, and/or an antistatic band that is attached to a case with a built-in buzzer.