CN111249618A

CN111249618A - Human body electrostatic releaser

Info

Publication number: CN111249618A
Application number: CN202010093919.5A
Authority: CN
Inventors: 吴东辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-06-09

Abstract

The invention relates to the technical field of human body static electricity discharge elimination, in particular to a human body static electricity releaser. The method is characterized in that: the touch body, the non-conductor and the elastic element are sequentially arranged on the grounding conductor, the non-conductor is supported by the elasticity of the elastic element to enable the touch body and the grounding conductor to be kept electrically separated, and the touch body is pressed by a hand and the elastic element is compressed to enable the touch body and the grounding conductor to be electrically connected to enable human body static electricity to be discharged to the ground. The beneficial effects are that: electric sparks are not generated (or the electric sparks are isolated) in the process of releasing the human static electricity, so that the human body is further not shocked, and the time required by releasing the human static electricity can be ensured.

Description

Human body electrostatic releaser

Technical Field

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

Background

The human body static electricity releasing ball is also called as a human body static electricity eliminating ball, and is a human body static electricity releasing product suitable for inflammable, explosive and static electricity preventing places.

However, the existing human body static electricity releasing ball is made of stainless steel, the ball body (the touch ball) is connected with the ground, and the human body static electricity is quickly introduced into the ground after a hand contacts the ball body.

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 avoid electric sparks (or isolate electric sparks) in the process of releasing the static electricity of the human body, further avoid electric shock feeling to the human body and realize quick static electricity release.

The technical scheme of the invention is as follows:

a human body electrostatic releaser is characterized in that: the touch body, the non-conductor and the elastic element are sequentially arranged on the grounding conductor, the non-conductor is supported by the elasticity of the elastic element to keep the touch body and the grounding conductor separated, and the touch body is pressed by a hand and the elastic element is compressed to cause the touch body and the grounding conductor to be electrically connected so that the static electricity of a human body is discharged to the ground.

The human body electrostatic releaser is characterized in that: the installation positions of the non-conductor and the elastic element can be interchanged.

The human body electrostatic releaser is characterized in that: the nonconductor is a sub-conductor or an insulator.

The human body electrostatic releaser is characterized in that: the non-conductor is a non-conductor cylinder, the grounding conductor is a conductive circular tube, and the non-conductor cylinder is sleeved in the conductive circular tube.

The human body electrostatic releaser is characterized in that: the non-conductor is a non-conductor round tube, the grounding conductor is a conductive cylinder, and the non-conductor round tube is sleeved on the conductive cylinder.

The human body electrostatic releaser is characterized in that: the non-conductor circular tube is made of an insulating material, a resistor R is arranged to electrically connect the touch body and the grounding conductor, and when the touch body is touched by a hand, the resistor R guides static electricity of a human body into the ground for pre-discharging.

The human body electrostatic releaser is characterized in that: the non-conductor circular tube is made of a sub-conductor material, the resistance of the non-conductor circular tube is R, and when a hand touches the touch object, the resistance R guides static electricity of a human body into the ground for pre-discharging.

The human body electrostatic releaser is characterized in that: the non-conductor circular tube is made of a sub-conductor material, the touch body is made of a sub-conductor material, or the touch body is completely or partially covered with the sub-conductor material, the total resistance is R, and when the touch body is touched by a hand, the resistance R guides static electricity of a human body into the ground for pre-discharging.

Any kind of human static electricity releaser, characterized by: the touch body or the grounding conductor is provided with the metal elastic sheet, so that a user can obtain tactile feedback or sound feedback when pressing.

The human body electrostatic releaser is characterized in that: a pressing reset mechanism is arranged on the touch body or the grounding conductor, and when the pressing reset mechanism is pressed, a person can obtain tactile feedback or sound feedback.

The human body electrostatic releaser is characterized in that: the magnetic grounding device at least comprises a conductive elastic piece and a conductive permanent magnet.

Any kind of human static electricity releaser, characterized by: the elastic part is a conductive elastic part.

The human body electrostatic releaser is characterized in that: the conductive elastic member is a spring.

The human body electrostatic releaser is characterized in that: the resistance value of the resistor R is 10 megohm-1000 megohm.

The invention has the beneficial effects that: electric sparks are not generated (or the electric sparks are isolated) in the process of releasing the human static electricity, so that the human body is further not shocked, and the time required by releasing the human static electricity can be ensured.

Drawings

FIG. 1 is a schematic diagram of the apparatus of the present invention.

Fig. 2 is a schematic view of the guide of the present invention after being pressed.

Fig. 3 is an embodiment of the invention employing an insulator + resistor R.

Fig. 4 is an embodiment of the present invention using an electrically conductive permanent magnet contact discharge.

Fig. 5 is another version of the embodiment of fig. 4.

FIG. 6 is an embodiment of the present invention in which the touch object is a complete sphere.

The specific implementation mode is as follows:

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

Fig. 1 is a schematic diagram of the device of the present invention, where 101 is a touch body, made of a conductor such as metal, generally a sphere made of stainless steel (commonly called electrostatic discharge ball), 102 is an electrical contact in the

touch body

101, 103 is a grounding conductor (i.e. a conductor that needs to be grounded when used), the grounding conductor 103 is grounded to the ground through a bracket 107, the grounding conductor 103 and the bracket 107 can be made of the same metal and electrically connected, 108 is a mounting base plate, 104 is a metal spring plate (providing tactile feedback or acoustic feedback, which may be default) disposed on the

grounding base

103, 105 is a non-conductor, i.e. a sub-conductor or an insulator, which functions to separate the touch body 101 and the grounding conductor 103 from direct conduction, 106 is an elastic member, and further is a conductive elastic member such as a spring. Further referring to fig. 2, the touch body 101, the non-conductor 105 and the elastic member 106 are sequentially fitted over the ground conductor 103, the non-conductor 105 is supported by the elasticity of the elastic member 106 to electrically separate the touch body 101 from the ground conductor 104, and the touch body 101 is manually pressed and the elastic member 106 is compressed to cause the electrical contact 102 of the touch body 101 to contact the metal dome 104 provided on the ground conductor 103, thereby electrically connecting the touch body 101 and the ground conductor 103 and discharging static electricity from the human body to the ground. Of course, the installation positions of the non-conductor 105 and the elastic member 106 may be interchanged.

In the embodiment of fig. 1, the nonconductor 101 may be a circular nonconductor tube, the ground conductor 103 may be a conductive cylinder, the circular nonconductor tube is sleeved on the conductive cylinder, and the circular nonconductor tube may freely move on the conductive cylinder. Of course, the grounding conductor can also be reversely sleeved, namely, the nonconductor is a nonconductor cylinder, the grounding conductor is a conductive circular pipe, and the nonconductor cylinder is sleeved in the conductive circular pipe.

The non-conductor round tube embodiment is summarized as follows: the touch body, the non-conductor circular tube and the elastic piece are sequentially sleeved on the conductive cylinder, the non-conductor circular tube is supported by the elastic piece to keep the touch body and the conductive cylinder separated, and the touch body is touched by a hand and the elastic piece is compressed to ensure that the touch body is electrically connected with the conductive cylinder after being touched so as to release the static electricity of a human body to the ground. Of course, the mounting positions of the non-conductive tubular 105 and the elastic member 106 can be interchanged.

During the concrete production, the touch body is a metal spheroid of opening the hole, and the non-conductor pipe card is in metal spheroid's hole and keeps apart the metal spheroid and can not bump with the electrically conductive cylinder mutually, overlaps earlier spring (elastic component) on the electrically conductive cylinder, will connect the opening hole metal ball suit of non-conductor pipe on the electrically conductive cylinder and hold down the spring again, sets up the protruding card of card on the electrically conductive cylinder and in one end (the one end in the metal ball) of non-conductor pipe.

Of course, the non-conductive round tube and the conductive cylinder indicated in the present invention can be replaced by tubes and columns with other shapes, and the shapes are not limited to the embodiments of the present invention.

The nonconductor in the invention refers to a sub-conductor or an insulator, and if the resistance of the sub-conductor is R (resistance through which electrostatic discharge current flows), the sub-conductor has the beneficial effects that when a hand touches a touch body, the static electricity of the human body can be pre-discharged through the resistance R, so that the touch inductance of the human body is eliminated, and an electrostatic loop adopting the sub-conductor can enter the ground through the sub-conductor and an elastic part (the elastic part is a conductive elastic part such as a spring) which are flowed through by the touch body, or the electrostatic loop enters the ground after the touch body is flowed through the sub-conductor to a grounding conductor (the sub-conductor is sleeved on the grounding conductor to. Therefore, the right generalization of the claims is that the human body static electricity pre-discharge is realized by the human body static electricity going back to the ground through the touch body, the resistor R or the sub-conductor and the conductive elastic element, and the essence of the human body static electricity pre-discharge is that the human body static electricity going back to the ground through the touch body, the resistor R or the sub-conductor.

The non-conductor refers to a sub-conductor or an insulator, and the circular non-conductor tube can be formed by injection molding of hard conductive plastic or formed by injection molding of hard insulating plastic. Or adopting chemical raw materials to solidify and mold, and adding conductive filler (such as carbon powder) to prepare a sub-conductor round tube.

The sub-conductor round tube embodiment is summarized as follows: the touch body, the sub-conductor round tube and the elastic piece are sequentially sleeved on the conductive cylinder, the sub-conductor round tube is supported by the elastic piece to enable the touch body and the conductive cylinder to be kept separated, human static electricity is pre-released through resistance of the sub-conductor round tube when the touch body is touched by a hand, and the touch body is pressed by the hand and the elastic piece is compressed to enable the touch body and the conductive cylinder to be touched to be electrically connected so that the human static electricity is thoroughly released to the ground. Further, the elastic member is a conductive elastic member, and further a metal spring. Of course, the installation positions of the sub-conductor round tube and the elastic element can be interchanged.

Fig. 3 shows an embodiment of the present invention using an insulator + a resistor R, wherein the non-conductive circular tube 105 is made of an insulating material, the elastic member 106 is a conductive elastic member such as a spring, and the resistor R is connected across the touch object 101 and the conductive elastic member 106, and when the touch object 101 is touched by a hand, the resistor R guides static electricity of a human body to the ground through the conductive elastic member 106 for pre-discharging.

In the embodiment of fig. 3, the round nonconductive tube may be made of an insulating hard plastic by injection molding, and is provided with a detent for holding the resistor.

The embodiments of the insulator + resistor R are summarized as: the touch body, the insulator pipe, electrically conductive elastic component suit is on electrically conductive cylinder in proper order, the elastic support insulator pipe by electrically conductive elastic component makes the touch body and electrically conductive cylinder keep the separation, set up resistance R cross-over connection between the touch body and electrically conductive elastic component (consider the stroke motion, the junction at the touch body and insulator pipe is connected to resistance R's one end, the junction at electrically conductive elastic component and insulator pipe is connected to the other end, human static is through resistance R when the touch body is touched to the hand, electrically conductive elastic component carries out human static and releases in advance, the hand is pressed the touch body and is compressed electrically conductive elastic component and lead to touch body and electrically connected the messenger human static thoroughly to ground after electrically conductive cylinder touches. Further, the conductive elastic member is a metal spring. Of course, the installation positions of the insulator circular tube and the conductive elastic member can be interchanged (in this case, one end of the resistor R is connected to the connection position of the conductive elastic member and the insulator circular tube, and the other end is connected to the bracket or the ground).

At present, a touch ball body made of a sub-conductor material (the industry standard SY/T7354-2017, the resistance is 10-1000 megohms) is adopted, 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 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 a specific test, the resistance value of the conducting resistor R is 10 megohm-1000 megohm. The resistor is the total resistance of electrostatic overcurrent.

Fig. 6 shows an embodiment of the present invention in which the touch body is a complete sphere, and the touch body 101 of this example is a complete sphere, which is a modification of the embodiment.

The invention also comprises other variant embodiments: the non-conductor circular tube is made of a sub-conductor material, the touch body is made of the sub-conductor material or covered with the sub-conductor material, the total resistance is R, and when the touch body is touched by a hand, the resistance R guides static electricity of a human body into the ground for pre-discharging.

The invention also comprises other variant embodiments: the non-conductor circular tube is made of sub-conductor materials, one part of the touch body is made of the sub-conductor materials, or part of the touch body is covered with the sub-conductor materials, the total resistance of the non-conductor circular tube is R, when the touch body is touched by a hand, human static electricity is conducted into the ground through the resistance R to be pre-discharged, the touch body and the grounding conductor are pressed to be electrically connected, the human static electricity is directly released to the ground through the conductive part of the touch body, and therefore the complete release of the human static electricity is completed.

With respect to the metal dome 104: the metal spring sheet is made of an ultrathin (0.05 mm-0.1mm in thickness) and an ultrathin (generally higher in hardness) stainless steel 301 or 304 material. The metal elastic sheet is mainly applied to products such as membrane switches, contact switches, PCB boards, FPC boards, medical instruments and the like. The working principle of the metal elastic sheet is as follows: the metal elastic sheet on the film key is positioned at a conductive part (mostly above the golden finger on the circuit board) on the PCB, when the metal elastic sheet is pressed, the central point of the elastic sheet is concave downward and contacts with a circuit on the PCB to form a loop, and the current passes through the loop, so that the whole product can work normally. The general conventional metal shrapnel is divided into the following parts according to different shapes: circular metal shrapnel, cross metal shrapnel, triangle metal shrapnel and ellipse metal shrapnel.

Since the contact of the dome is continued for a period of time greater than 0.1 second (which is related to the pressing speed and the dome size and can be obtained by adjusting the dome size), while the time required for directly grounding to discharge the static electricity of the human body is less than 0.1 second (generally 0.08 second), this solution achieves the effect of ensuring that the time required for discharging the static electricity of the human body is quickly released (unexpected effect).

In addition, a technical solution similar to a ball point pen button (prior art) can also be adopted: the spring and the pressing reset machine component are formed, a recess is arranged below the spring, the spring can sink into the recess after being pressed down, the spring is reset by the elastic force of the spring, the force of the recess is larger than the restoring force of the spring, the spring is enabled to keep a compressed state, the spring is pressed down again, and the spring is reset under the restoring force of the spring after the protrusion leaves. This scheme achieves the effect of ensuring a quick release of the time required for the static electricity of the human body (unexpected effect).

In addition, the pressing stroke of the present invention requires a certain time, thereby providing a sufficient pre-discharge time.

In the invention, the grounding conductor is positioned in the cavity formed by the touch body and the non-conductor, only a gap exists between the non-conductor and the grounding conductor, and the gap is flame-retardant and flame-proof, so that electrostatic sparks generated immediately when the touch body and the grounding conductor are in collision and electric connection can not be transferred to the outside of the cavity, and the flame-proof and explosion-proof product is obtained.

Fig. 4 shows an embodiment of the present invention using conductive permanent magnet contact discharge (i.e. magnetic grounding device), 401 is a conductive elastic member, such as a spring, 402 is a conductive permanent magnet or a permanent magnet wrapped with a conductive material, the magnetic pole direction or manner of the permanent magnet is not limited, the grounding conductor 103 is a ferromagnetic conductive material, when a pressing action is performed, the conductive permanent magnet 402 is continuously close to the grounding conductor 103, and finally, an attraction occurs, so that the touch body 101 is stably and electrically connected to the grounding conductor 103 through the conductive elastic member 401 and the conductive permanent magnet 402, the stable electrical connection lasts for a certain time (the time is determined by the elastic coefficient of the conductive elastic member and the magnetic force of the permanent magnet and can be manually adjusted), the time can far meet the time required for completely releasing static electricity, and the attraction action of the permanent magnet can be conducted to the hand to form a tactile feedback, or the attraction action of the permanent magnet gives out collision sound feedback. The restoring elasticity of the elastic part 106 is larger than the suction force of the conductive permanent magnet, and the magnetic grounding device is opened after the hand is released.

Fig. 5 is another version of the embodiment of fig. 4. An electrically conductive permanent magnet is disposed on and electrically connected to ground conductor 103, and an armature 501 is disposed to cooperate with electrically conductive permanent magnet 402.

In addition, a glow discharge tube can be arranged in the electrostatic discharge loop to display the discharge process of the static electricity (in the case of meeting the explosion-proof requirement, such as explosion-proof neon bubbles).

The resistance values of the resistors provided in the invention can be understood as recommended values, and the protection range of the present application is not necessarily limited, and the reference implementation is specifically performed according to the standards of related industries, such as GB4385-1995 (the recommended value resistance value range is 100k Ω -1000M Ω), GB/T11210-2014 (the recommended value resistance value does not exceed 300M Ω), GJB 2605-1996, and GB 12014-1989. M Ω means mega ohm.

The above application modes and rules do not limit the basic features of the method and system 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

1. A human body electrostatic releaser is characterized in that: the touch body, the non-conductor and the elastic element are sequentially arranged on the grounding conductor, the non-conductor is supported by the elasticity of the elastic element to keep the touch body and the grounding conductor separated, and the touch body is pressed by a hand and the elastic element is compressed to cause the touch body and the grounding conductor to be electrically connected so that the static electricity of a human body is discharged to the ground.

2. The electrostatic discharger according to claim 1, wherein: the installation positions of the non-conductor and the elastic element can be interchanged.

3. The electrostatic discharger according to claim 2, wherein: the nonconductor is a sub-conductor or an insulator.

4. The electrostatic discharger according to claim 3, wherein: the non-conductor is a non-conductor cylinder, the grounding conductor is a conductive circular tube, and the non-conductor cylinder is sleeved in the conductive circular tube.

5. The electrostatic discharger according to claim 3, wherein: the non-conductor is a non-conductor round tube, the grounding conductor is a conductive cylinder, and the non-conductor round tube is sleeved on the conductive cylinder.

6. The electrostatic discharger according to claim 5, wherein: the non-conductor circular tube is made of an insulating material, a resistor R is arranged to electrically connect the touch body and the grounding conductor, and when the touch body is touched by a hand, the resistor R guides static electricity of a human body into the ground for pre-discharging.

7. The electrostatic discharger according to claim 5, wherein: the non-conductor circular tube is made of a sub-conductor material, the resistance of the non-conductor circular tube is R, and when a hand touches the touch object, the resistance R guides static electricity of a human body into the ground for pre-discharging.

8. The electrostatic discharger according to claim 5, wherein: the non-conductor circular tube is made of a sub-conductor material, the touch body is made of a sub-conductor material, or the touch body is completely or partially covered with the sub-conductor material, the total resistance is R, and when the touch body is touched by a hand, the resistance R guides static electricity of a human body into the ground for pre-discharging.

9. The electrostatic discharger according to any of claims 1 to 8, wherein: the touch body or the grounding conductor is provided with the metal elastic sheet, so that a user can obtain tactile feedback or sound feedback when pressing.

10. The electrostatic discharger according to any of claims 1 to 8, wherein: a pressing reset mechanism is arranged on the touch body or the grounding conductor, and when the pressing reset mechanism is pressed, a person can obtain tactile feedback or sound feedback.