CN211751792U - Handheld electrostatic releaser - Google Patents

Abstract

The invention relates to the technical field of elimination of human body static electricity discharge, in particular to a handheld static electricity releaser. The method is characterized in that: resistance R2, pilot lamp, hand touch electrode order electricity are connected, resistance R1 through electrically conductive elastic component with glow tube the hand touch electrode order electricity is connected, in human static electricity discharge process, at first resistance R1 contact discharge body, and human static carries out 1 discharge through resistance R1, presses handheld electrostatic discharge ware, and the electrically conductive elastic component of connecting with resistance R1 is compressed and makes resistance R2 and discharge body contact, and human static carries out 2 discharges through resistance R2, R1R 2, and the pilot lamp is used for the discharge indication. The beneficial effects are that: when in use, the electrostatic spark is not generated, and simultaneously, the human body static electricity can be quickly released without generating electric shock feeling to human body in the process of releasing the human body static electricity.

Description

Handheld electrostatic releaser

Technical Field

The invention relates to the technical field of elimination of human body static electricity discharge, in particular to a handheld static electricity releaser.

Background

In winter, due to dry weather, a large amount of static electricity is easy to gather after a human body moves, and the human body is often shocked by electricity in daily life, such as opening a door, touching a metal object and holding hands, and the discomfort is caused by static discharge sparks. At present, products for eliminating static electricity exist in the market, the principle is that a larger resistor is adopted to slowly release static electricity (limit discharge power), however, the static electricity cannot be completely released due to the introduction of the larger resistor, secondary discharge can be caused, and meanwhile, the static electricity releasing time is longer.

Disclosure of Invention

The intrinsic safety is derived from the GB 3836.4-201 standard, explosion-proof electrical appliances are classified into explosion-proof type, safety-increasing type, intrinsic safety type and the like, and the intrinsic safety type electrical equipment is characterized in that all circuits are intrinsic safety circuits, namely, the circuits cannot ignite specified explosive mixtures due to electric sparks and thermal effects generated under normal work or specified fault states. That is, the electric appliance is not explosion-proof by the outer shell and the filler, but the energy of electric spark or heat effect generated by the circuit in normal use or failure is less than 0.28mJ, namely the gas concentration is 8.5% (the most explosive concentration) of the minimum ignition energy.

The human body electrostatic discharge requires no spark, no electric shock, and no long discharge time, and the human body capacitance is usually a constant value according to Q (electric quantity) = U (voltage) × C (capacitance), I (current) = U (voltage)/R (resistance), and in order to avoid instantaneous discharge, a discharge resistance is provided, i.e. the discharge power P = U is limited²In the case of a constant resistance, the voltage decreases with the decrease in the quantity of electricity, the discharge current decreases, the discharge time increases, and the discharge power decreases rapidly with the square of the voltage (P = U) (/ R)²/R), if a discharge power is defined, the resistance decreases rapidly for a rapid discharge.

According to the time constant T = RC of the discharge, the larger the resistance is, the longer the discharge time is required under the condition of a certain C, and the smaller the resistance is, the larger the discharge power is, and the sparks are easy to generate, so the variable resistance discharge is solved.

The invention aims to provide a handheld electrostatic releaser capable of releasing static electricity for two or more times, which meets the requirement of intrinsic safety, does not generate electric shock feeling and electrostatic sparks to people in the process of releasing the static electricity of human bodies, and simultaneously realizes quick release of the static electricity.

The technical scheme of the invention is as follows:

a handheld electrostatic discharge ware, characterized by: resistance R2, hand touch electrode electricity are connected, resistance R1, electrically conductive elastic component the hand touch electrode electricity is connected, and in human static electricity discharge process, at first resistance R1 contact discharge body, human static carries out 1 discharge through resistance R1, presses handheld electrostatic discharge ware, and the electrically conductive elastic component of connecting with resistance R1 is compressed and is made resistance R2 and discharge body contact, and human static carries out 2 discharges through resistance R2.

A handheld electrostatic discharge ware, characterized by: resistance R2, pilot lamp, hand touch electrode electricity are connected, resistance R1, electrically conductive elastic component the pilot lamp the hand touch electrode electricity is connected, and in human static electricity discharge process, at first resistance R1 contact discharge body, and human static carries out 1 discharge through resistance R1, presses handheld electrostatic discharge ware, and the electrically conductive elastic component of being connected with resistance R1 is compressed and is made resistance R2 and discharge body contact, and human static carries out 2 discharges through resistance R2, and the pilot lamp is used for discharging the instruction.

The handheld electrostatic releaser is characterized in that: the resistor R1 and the resistor R2 are integrated concentric resistors, the middle cylindrical part of the concentric resistor is the resistor R1, the outer circular tube part of the concentric resistor is the resistor R2, the cylindrical part of the R1 extends out of the cylindrical part of the R2 under the elastic force of the conductive elastic piece, when the discharge lamp is used, the cylindrical part of the R1 firstly contacts the discharge body to realize 1-time discharge, and after the conductive elastic piece is further compressed, the cylindrical part of the R1 retracts into the cylindrical part of the R2 to enable the cylindrical part of the R2 to contact the discharge body to realize 2-time discharge.

The handheld electrostatic releaser is characterized in that: the resistor R3 is further included, the resistor R3, the resistor R1 and the resistor R2 are integrated concentric resistors, a middle cylindrical part of the concentric resistor is a resistor R3, an outer circular tube part of the concentric resistor is resistors R1 and R2, a R2 circular tube part is located outside the R1 circular tube part, a R3 cylindrical part extends out of the R1 circular tube part under the elastic force of the conductive elastic piece 2, a R1 circular tube part extends out of the R2 circular tube part under the elastic force of the conductive elastic piece 1, when the resistor R3 cylindrical part is used, firstly, contacted with the discharge body to achieve 1-time discharge, after the conductive elastic piece 2 is further compressed, the R3 cylindrical part retracts into the R1 circular tube part to enable the R1 circular tube part to be contacted with the discharge body to achieve 2-time discharge, after the conductive elastic piece 1 is continuously compressed, the R1 circular tube part retracts into the R2 circular tube part to enable the R2 circular tube part to be contacted.

The handheld electrostatic releaser is characterized in that: the resistor R1 and the resistor R2 are integrated concentric resistors, the middle cylindrical part of the concentric resistor is the resistor R2, the outer round tube part of the concentric resistor is the resistor R1, the R1 round tube part extends out of the R2 cylindrical part under the elastic force of the conductive elastic piece, when the discharge lamp is used, the R1 round tube part firstly contacts the discharge body to realize 1-time discharge, and the R1 round tube part is sleeved into the R2 cylindrical part after the conductive elastic piece is further compressed to enable the R2 cylindrical part to contact the discharge body to realize 2-time discharge.

The handheld electrostatic releaser is characterized in that: the device also comprises an nth resistor Rn and an nth conductive elastic piece n, and the n pre-discharge is carried out for n times, wherein n is the number of pre-discharge times.

The handheld electrostatic releaser is characterized in that: the resistor is made of a sub-conductor.

The handheld electrostatic releaser is characterized in that: the resistor is made of an elastic subconductor.

The handheld electrostatic releaser is characterized in that: the conductive spring is part of a spring sub-conductor.

The handheld electrostatic releaser is characterized in that: the conductive spring is the spring subconductor itself.

The handheld electrostatic releaser is characterized in that: the resistor is made of conductive rubber.

The handheld electrostatic releaser is characterized in that: the conductive elastic member is a part of the conductive rubber.

The handheld electrostatic releaser is characterized in that: the conductive elastic member is the conductive rubber itself.

The handheld electrostatic releaser is characterized in that: the indicator light is a glow tube.

The handheld electrostatic releaser is characterized in that: the glow tube is a neon tube.

The handheld electrostatic releaser is characterized in that: the resistance is 1 megohm-1000 megohm.

The handheld electrostatic releaser is characterized in that: 200 megohm ≧ R1 ≧ 50 megohm, 100 megohm ≧ R2 ≧ 1 megohm.

The handheld electrostatic releaser is characterized in that: 600 megohm ≧ R3 ≧ 200 megohm, 200 megohm ≧ R1 ≧ 50 megohm, 100 megohm ≧ R2 ≧ 1 megohm.

The invention has the beneficial effects that: when in use, the electrostatic spark is not generated, and simultaneously, the human body static electricity can be quickly released without generating electric shock feeling to human body in the process of releasing the human body static electricity.

Drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is an equivalent circuit diagram of the embodiment of fig. 1.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Fig. 4 is an implementation of the embodiment of fig. 1 to increase the resistance of R3.

Fig. 5 is an equivalent circuit diagram of the embodiment of fig. 4.

Fig. 6 is an embodiment in which the order of the conductive elastic member and R1 is interchanged.

Fig. 7 is a variation of the embodiment shown in fig. 1.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic diagram of the structure of the present invention, where 101 is a resistor R2, 102 is an insulating transparent tube, 103 is a hand touch electrode, 104 is an indicator light (such as a glow tube, and may be a neon tube), 105 is a conductive elastic member (such as a spring), and 106 is a resistor R1. The human body static electricity releasing process is as follows: the invention is held by a hand 103 to touch an electrode, the invention is contacted with a discharge body, namely an object which is about to be contacted by a human body, such as a vehicle, a door handle, an elevator button and the like, firstly a resistor R1 is contacted with the discharge body, the human body static electricity is discharged for 1 time through a resistor R1, the resistance of the resistor R1 is large, the discharge power is considered as pre-discharge, so that static sparks and electric shock feeling are not generated, then the hand-held static electricity releaser is continuously pressed, a conductive elastic piece 105 connected with the resistor R1 is compressed to enable the resistor R2 to be contacted with the discharge body, the human body static electricity is discharged for 2 times through a resistor R2, and R1 & gtR 2, so that the human body static electricity is more thoroughly released after the 2 times of discharge, a light tube is used for discharge indication, when the light tube is bright, the static electricity is. Of course, the glow tube may be replaced by other indicator lights, such as an LED indicator light, an LCD indicator.

During the process of pressing the handheld electrostatic discharger, the practical situation is that as R1 is continuously retracted into R2, the over-current resistance of static electricity is continuously reduced (beneficial to electrostatic discharge), and when R1 and R2 simultaneously contact a discharge body, the total discharge resistance is the parallel value of R1 and R2.

The resistor R1 and the resistor R2 are integrated concentric resistors, the middle cylindrical part of the concentric resistor is the resistor R1, the outer circular tube part of the concentric resistor is the resistor R2, the cylindrical part of the R1 extends out of the cylindrical part of the R2 under the elastic force of the conductive elastic piece, when the discharge lamp is used, the cylindrical part of the R1 firstly contacts the discharge body to realize 1-time discharge, and after the conductive elastic piece is further compressed, the cylindrical part of the R1 retracts into the cylindrical part of the R2 to enable the cylindrical part of the R2 to contact the discharge body to realize 2-time discharge.

R1, R2 may be made of sub-conductor materials.

R1, R2 may be made of conductive rubber, further using the elasticity of the conductive rubber, and a spring-like shape made of conductive rubber itself at one end of R1 is used instead of the conductive elastic member 105, i.e., characterized in that the conductive elastic member is a part of the conductive rubber. Here, the conductive rubber may be expanded into a sub-conductor elastic material.

With continued reference to fig. 7, a modification of the embodiment of fig. 1, a cylindrical shape made of conductive rubber is used as R2, and a cylindrical conductive rubber R1 is provided in the cylinder of R2, since the conductive rubber R1 has elastic properties, i.e., it is characterized in that the conductive elastic member is the conductive rubber itself. Here, the conductive rubber may be expanded into a sub-conductor elastic material.

The features of the embodiment of fig. 1 are: resistance R2, pilot lamp, the electrode order electricity of hand touch are connected, resistance R1 through electrically conductive elastic component with the pilot lamp the electrode order electricity of hand touch is connected, in human static electricity discharge process, at first resistance R1 contact discharge body, and human static carries out 1 discharge through resistance R1, presses handheld electrostatic discharge ware, and the electrically conductive elastic component of connecting with resistance R1 is compressed and makes resistance R2 and discharge body contact, and human static carries out 2 discharges through resistance R2, R1R 2, and the pilot lamp is used for the discharge indication. Considering that an indicator light is not necessary, a default may be used in embodiments where an indicator light is not required, characterized by: resistance R2, the electrode order electricity of hand touch are connected, resistance R1 through electrically conductive elastic component with the electrode order electricity of hand touch is connected, in human electrostatic discharge process, at first resistance R1 contact discharge body, and human static discharges 1 time through resistance R1, presses handheld electrostatic discharge ware, and the electrically conductive elastic component who is connected with resistance R1 is compressed and is made resistance R2 and discharge body contact, and human static discharges 2 times through resistance R2, can set up R1 > R2, and practical situation is R1, R2 and discharges in parallel.

The invention is applied to human body static elimination, the current human body static elimination adopts the static electricity releasing ball, and because the static electricity releasing ball is made of metal, when a finger touches the static electricity releasing ball, static spark can be generated, all potential safety hazards in flammable and explosive fields can be caused, and simultaneously, the static electricity releasing ball can also generate electric shock feeling to the human body; at present, a sub-conductor touch sphere (the industry standard SY/T7354-2017, 10-1000 MegaOhm resistance) is adopted, so that the instantaneous human body static electricity release energy is reduced, the electric shock feeling is reduced, the human body static electricity release time needs to be prolonged, and static electricity carried by a human body cannot be completely released due to the existence of the resistance. The invention can realize the complete release of human static without electrostatic spark and electric shock.

The human body resistance is generally 2 kilo-ohm-20 mega-ohm, the human body static is generally thousands of volts-tens of thousands of volts, the air breakdown field intensity is about 30kV/cm, the electrostatic shock of the finger tip is just caused by air breakdown, if 3000 volts are needed for breakdown according to 1mm, 9000 volts of the human body electrostatic voltage is taken, according to the ohm law, the voltage distributed by the human body does not exceed 3000 volts, and the resistance is 4 kilo-ohm-600 mega-ohm. According to specific tests, the resistance of the conductive rubber is 50-200 megohms, which can meet most conditions (such as 100 megohms). The resistor is the total resistance of electrostatic overcurrent.

Fig. 2 is an equivalent circuit diagram of the embodiment of fig. 1, first a resistor R1 contacts a discharge body, human static electricity is discharged 1 time through a resistor R1, then the handheld electrostatic releaser is continuously pressed, a conductive elastic member 105 connected with the resistor R1 is compressed to make the resistor R2 contact the discharge body equivalent to K1 closing, the human static electricity is discharged 2 times through a resistor R2, R1 > R2 can be set, actually, R1 and R2 are discharged in parallel, thus the human static electricity is more completely released by the 2 times of discharge, a glow tube is used for discharge indication, when the glow tube is lighted, static electricity is released, and when the glow tube is extinguished, the discharge is finished.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention, in which a resistor 302 (R1) and a resistor 101 (R2) are an integrated concentric resistor, a middle cylindrical portion of the concentric resistor is the resistor 101 (R2), an outer cylindrical portion thereof is the resistor 302 (R1), and a R1 cylindrical portion extends out of an R2 cylindrical portion under the elastic force of a conductive elastic member, when the resistor is used, the R1 cylindrical portion first contacts a discharge body to achieve 1 discharge, and after the conductive elastic member is further compressed, the R1 cylindrical portion is sleeved into the R2 cylindrical portion to enable the R2 cylindrical portion to contact the discharge body to achieve 2 discharges.

Fig. 4 shows an implementation of increasing the resistance of R3 in the embodiment of fig. 1, which further includes a resistor 402 (R3), the resistor 402 (R3), the resistor 106 (R1), and the resistor 101 (R2) are integrated concentric resistors, the middle cylindrical portion of the concentric resistor is a resistor R3, the outer cylindrical portion thereof is resistors R1 and R2, the R2 cylindrical portion is located outside the R1 cylindrical portion, the R3 cylindrical portion extends out of the R1 cylindrical portion under the elastic force of the conductive elastic member 401, the R1 cylindrical portion extends out of the R2 cylindrical portion under the elastic force of the conductive elastic member 101, when in use, the R3 cylindrical portion first contacts the discharge body to achieve 1 discharge, after further compressing the conductive elastic member 401, the R3 cylindrical portion retracts into the R1 cylindrical portion to enable the R1 cylindrical portion to contact the discharge body to achieve 2 discharges, after further compressing the conductive elastic member 105, the R1 cylindrical portion retracts into the R85 2 cylindrical portion to enable the R2 cylindrical portion to contact the discharge body to achieve 3 discharges, r1, R2, R3 can be set, and actually R1, R2 and R3 are sequentially discharged in parallel.

Further, an nth resistor Rn and an nth conductive elastic piece n can be arranged to perform n times of pre-discharge, wherein n is the number of times of pre-discharge. The multiple discharges are performed to further reduce the shock to human body when static electricity is discharged, so that the resistance should be set from large to small (as the case may be, it may be selected from large to small at 1 mega ohm to 1000 mega ohm), for example, 3 pre-discharges are set, and the resistance may be set to 200 mega ohm, 100 mega ohm, or 50 mega ohm.

Fig. 5 is an equivalent circuit diagram of the embodiment of fig. 4, the cylindrical portion of R3 first contacts the discharge body to achieve 1 discharge, the cylindrical portion of R3 retracts into the portion of R1 round tube after further compressing the conductive elastic member 401 to enable the portion of R1 round tube to contact the discharge body to achieve 2 discharges, which is equivalent to K1 closing, the cylindrical portion of R1 retracts into the portion of R2 round tube after continuing compressing the conductive elastic member 105 to enable the portion of R2 round tube to contact the discharge body to achieve 3 discharges, which is equivalent to K2 closing, R1 > R2 > R3 can be set, and actually, R1, R2 and R3 are sequentially connected in parallel to discharge.

Fig. 6 is an embodiment in which the order of the conductive elastic member and R1 is interchanged, and considering that the order of the series circuit can be interchanged, this embodiment is to contact the discharge body through the conductive elastic member, discharge of static electricity through R1 is first achieved by contacting the discharge body through the conductive elastic member, and discharge of static electricity through R2 is achieved by compressing the conductive elastic member to contact R2 after pressing this example. The first contact electrode 601 is a first contact electrode, the second contact electrode 602 is a second contact electrode, the first contact electrode 601 and the second contact electrode 602 are kept insulated, the insulating tube 603 is an insulating tube, firstly the first contact electrode 601 contacts the discharge body and then releases human body static electricity through R1, the product of the embodiment is continuously pressed to compress the conductive elastic piece 105, so that the second contact electrode 602 contacts the discharge body and then releases human body static electricity through R2 (at this time, R1 still contacts the discharge body through the first contact electrode, and actually R1 and R2 discharge in parallel). Of course, the indicator light 104 in this embodiment may also be default, i.e., directly connected.

Fig. 7 is a modification of the embodiment shown in fig. 1, a circular tube part is made of conductive rubber as R2, a cylindrical part conductive rubber R1 is arranged in the circular tube part of R2, the cylindrical part extends out of the circular tube part (ensuring that R1 contacts the discharge body before R2), because conductive rubber R1 has elastic property, when the product of the invention is pressed, the length of the R1 cylindrical part is shortened, the diameter is thickened until the R2 circular tube part is contracted to enable R1 and R2 to contact the discharge body at the same time, the volume of the compressed cylindrical part is designed to be smaller than or equal to the volume of the internal space of the circular tube part, and considering that the volume of the compressed conductive rubber is basically unchanged, the volume of the compressed cylindrical part is designed to be smaller than or equal to the volume of the internal space of the circular tube part, namely, the conductive elastic element is conductive rubber: the cylindrical part extends out of the circular tube part and the volume of the cylindrical part is less than or equal to the volume of the inner space of the circular tube part.

In the embodiment of FIG. 7, the cylindrical portion and the cylindrical portion may be integrally formed of the same conductive rubber material (the cylindrical root portion and the cylindrical tube are integrally connected) according to the formula of resistance

That is, for a column-shaped uniform conductor made of a certain material, the resistivity is constant, and the resistance is proportional to the length and inversely proportional to the cross-sectional area, so that the desired resistance value of R1 can be obtained by setting the length and diameter of the cylindrical portion, or the desired relative resistance values of R1 and R2 can be obtained by setting the length and diameter of the cylindrical portion. Furthermore, the resistance value can be adjusted by designing the shape of the cylindrical root, and further, the part of the cylindrical root connected with the circular tube can be made into a spring shape, a corrugated shape or a plurality of thin strip supporting shapes, so that the spring shape, the corrugated shape or the plurality of thin strip supporting shapes can more easily realize elasticity, namely, one part of the cylinder is a conductive elastic part, or the conductive elastic part is one part of a conductive rubber cylinder.

In addition, the above-mentioned R1 > R2 is described as a principle, and in a practical case, the final electrostatic discharge resistance is a parallel value of R1 and R2, and the parallel value is smaller than a value of R1 or R2, and assuming that R1= R2, the final electrostatic discharge resistance is R1 or R2 of 1/2, so that the relative sizes of the resistances of R1, R2 and R3 are not reflected in the claims.

The conductive rubber in the present invention can be understood as a sub-conductor material or a sub-conductor elastic material by extension, and in the claims, "conductive rubber" may be replaced by "sub-conductor material" or "sub-conductor elastic material" when the elastic property of conductive rubber is utilized.

The above application modes and rules do not limit the basic features of the method and application of the present invention, and do not limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A handheld electrostatic discharge ware, characterized by: resistance R2, hand touch electrode electricity are connected, resistance R1, electrically conductive elastic component the hand touch electrode electricity is connected, and in human static electricity discharge process, at first resistance R1 and discharge body are electrically conductive, and human static carries out 1 discharge through resistance R1, presses handheld electrostatic discharge ware, and the electrically conductive elastic component of connecting with resistance R1 is compressed and is made resistance R2 and discharge body electrically conductive, and human static carries out 2 discharges through resistance R2.

2. A handheld electrostatic discharge ware, characterized by: resistance R2, pilot lamp, hand touch electrode electricity are connected, resistance R1, electrically conductive elastic component the pilot lamp the hand touch electrode electricity is connected, and in human static electricity discharge process, at first resistance R1 and discharge body are electrically conductive, and human static carries out 1 discharge through resistance R1, press handheld electrostatic discharge ware, and the electrically conductive elastic component of resistance R1 connection is compressed and is made resistance R2 and discharge body electrically conductive, and human static carries out 2 discharges through resistance R2, and the pilot lamp is used for the discharge indication.

3. The hand-held electrostatic discharge as claimed in claim 1 or 2, wherein: the resistor R1 and the resistor R2 are integrated concentric resistors, the middle cylindrical part of the concentric resistor is the resistor R1, the outer circular tube part of the concentric resistor is the resistor R2, the cylindrical part of the R1 extends out of the cylindrical part of the R2 under the elastic force of the conductive elastic piece, when the discharge lamp is used, the cylindrical part of the R1 firstly contacts the discharge body to realize 1-time discharge, and after the conductive elastic piece is further compressed, the cylindrical part of the R1 retracts into the cylindrical part of the R2 to enable the cylindrical part of the R2 to contact the discharge body to realize 2-time discharge.

4. The hand-held electrostatic discharge as claimed in claim 1 or 2, wherein: the resistor R1 and the resistor R2 are integrated concentric resistors, the middle cylindrical part of the concentric resistor is the resistor R2, the outer round tube part of the concentric resistor is the resistor R1, the R1 round tube part extends out of the R2 cylindrical part under the elastic force of the conductive elastic piece, when the discharge lamp is used, the R1 round tube part firstly contacts the discharge body to realize 1-time discharge, and the R1 round tube part is sleeved into the R2 cylindrical part after the conductive elastic piece is further compressed to enable the R2 cylindrical part to contact the discharge body to realize 2-time discharge.

5. The hand-held electrostatic discharge as claimed in claim 1 or 2, wherein: 200 megohm ≧ R1 ≧ 50 megohm, 100 megohm ≧ R2 ≧ 1 megohm.

6. The hand-held electrostatic discharge as claimed in claim 1 or 2, wherein: the resistor R3 is further included, the resistor R3, the resistor R1 and the resistor R2 are integrated concentric resistors, a middle cylindrical part of the concentric resistor is a resistor R3, an outer circular tube part of the concentric resistor is resistors R1 and R2, a R2 circular tube part is located outside the R1 circular tube part, a R3 cylindrical part extends out of the R1 circular tube part under the elastic force of the conductive elastic piece 2, a R1 circular tube part extends out of the R2 circular tube part under the elastic force of the conductive elastic piece 1, when the resistor R3 cylindrical part is used, firstly, contacted with the discharge body to achieve 1-time discharge, after the conductive elastic piece 2 is further compressed, the R3 cylindrical part retracts into the R1 circular tube part to enable the R1 circular tube part to be contacted with the discharge body to achieve 2-time discharge, after the conductive elastic piece 1 is continuously compressed, the R1 circular tube part retracts into the R2 circular tube part to enable the R2 circular tube part to be contacted.

7. The hand held electrostatic discharge device as claimed in claim 6, wherein: 600 megohm ≧ R3 ≧ 200 megohm, 200 megohm ≧ R1 ≧ 50 megohm, 100 megohm ≧ R2 ≧ 1 megohm.

8. The hand held electrostatic discharge as claimed in claim 1, 2 or 7, wherein: the resistor is made of conductive rubber.

9. The hand-held electrostatic discharge as claimed in claim 8, wherein: the conductive elastic member is a part of the conductive rubber or the conductive rubber itself.

10. The hand held electrostatic discharge as claimed in claim 1, 2 or 7, wherein: the indicator light is a glow tube.

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