CN111359089A - Human body electrostatic discharge ball - Google Patents
Human body electrostatic discharge ball Download PDFInfo
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- CN111359089A CN111359089A CN202010093903.4A CN202010093903A CN111359089A CN 111359089 A CN111359089 A CN 111359089A CN 202010093903 A CN202010093903 A CN 202010093903A CN 111359089 A CN111359089 A CN 111359089A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/14—Leading-off electric charges, e.g. by earthing
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Abstract
The invention relates to the technical field of human body static electricity discharge elimination, in particular to a human body static electricity discharge ball. The method is characterized in that: the touch ball type travel switch at least comprises a touch ball, an elastic reset device, a travel rod, at least two groups of normally open travel switches, a resistor and a ground wire, wherein the travel rod is connected to the touch ball and can do travel motion along an axis, and the normally open travel switches are sequentially arranged in the travel according to time sequence. The beneficial effects are that: no electric spark is generated (or the electric spark is isolated) in the process of releasing the static electricity of the human body, and further no electric shock feeling is generated to the human body.
Description
Technical Field
The invention relates to the technical field of human body static electricity discharge elimination, in particular to a human body static electricity discharge ball.
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.
The static electricity of the human body needs a certain time (relaxation time), and for the traditional fixed static electricity releasing ball, an operator can hardly subjectively judge whether the time needed for eliminating the static electricity is reached.
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 spark (or isolate electric spark) in the process of releasing static electricity of human body, further avoid electric shock feeling to human body, realize quick static electricity release, and ensure the time (unexpected effect) required by static electricity release due to the existence of pressing stroke.
The technical scheme of the invention is as follows:
a human body static electricity releasing ball is characterized in that: the touch ball type travel switch at least comprises a touch ball, an elastic reset device, a travel rod, at least two groups of normally-open travel switches, a resistor and a ground wire, wherein the travel rod is connected to the touch ball and can do travel motion along an axis, the normally-open travel switches are sequentially arranged according to time sequence in the travel, one end of a normally-open travel switch (302) is connected to the touch ball, the other end of the normally-open travel switch is connected to the ground wire after being serially connected with a resistor (401), one end of a normally-open travel switch (301) is connected to the touch ball, the other end of the normally-open travel switch is connected to the ground wire, when the touch ball is pressed by a hand, the travel rod is driven to do travel motion, when the travel rod touches the normally-open travel switch (302), the normally-open travel switch is closed, human static electricity is pre-discharged through the resistor (401), the touch ball is continuously pressed, the travel rod is driven to continue the, the static electricity of the human body is directly transmitted to the ground wire through the touch ball touched by the hand and then is completely released, and after the hand is released, the touch ball is reset under the action of the elastic reset device, and the normally open stroke switch loses the touch of the stroke rod and is opened.
The human body static electricity releasing ball is characterized in that: the device also comprises an nth normally-open travel switch and a resistor, wherein n times of pre-discharge are carried out, and n is the number of times of pre-discharge.
Further, the resistance is 4 kilo-ohms to 600 mega-ohms.
And optimizing, wherein the resistance is 1-200 megohms.
The human body static electricity releasing ball is characterized in that: and the indicating lamp string is connected in the loop of the normally open travel switch and is used for indicating the working state of the normally open travel switch.
The human body static electricity releasing ball is characterized in that: the normally open travel switch is an explosion-proof normally open travel switch.
The human body static electricity releasing ball is characterized in that: the elastic reset device consists of a spring.
The human body static electricity releasing ball is characterized in that: the device also comprises an electrostatic detection device which is used for detecting the electrostatic discharge effect and prompting by sound or light.
The human body static electricity releasing ball is characterized in that: mechanical ringing is also included, and the ringing prompts after the static electricity of the human body is released.
The human body static electricity releasing ball is characterized in that: a resistor is connected between the touch ball and the ground, and when the touch ball is touched by a hand, the human body static electricity pre-discharge is started. Furthermore, the resistance value is 10 megohm-1000 megohm.
The invention has the beneficial effects that: the electric spark is not generated (or isolated) in the process of releasing the static electricity of the human body, so that the human body is further not shocked, and meanwhile, the time required by releasing the static electricity is ensured (unexpected effect) due to the existence of the pressing stroke.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention.
FIG. 2 is a circuit diagram of a serial indicator light according to the present invention.
Fig. 3 is an embodiment of the present invention for adding mechanical ring alert.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the apparatus of the present invention. The touch ball 101 is made of a conductive material, 202 is a travel rod connected to the touch ball 101, a spring 201 is arranged on the travel rod 202, the spring 201 is used for resetting the travel rod 202 after a hand releases the touch ball 101, meanwhile, the touch ball 101 is also reset, 102 is a transition section made of an insulating material and used for keeping the touch ball 101 and a support 103 insulated, 104 is a chassis, the support 103 and the chassis 104 are made of conductive materials, one end of a normally open travel switch 301 is connected to the touch ball 101, the other end of the normally open travel switch is connected to the support so as to be connected to the ground, the normally open travel switch 302 is connected to the ground after being connected in series with a resistor 401, in the travel of the travel rod 202, 302 acts currently, 301 acts later, and the process is as follows:
① touch the touch ball 101 by hand, the transition segment 102 keeps the touch ball 101 insulated from the ground, and no electrostatic spark is generated when touching;
② the touch ball 101 is pressed by hand to drive the stroke rod 202 to do stroke movement;
③ when the stroke rod 202 strokes to the position of the normally open travel switch 302 and touches the normally open travel switch 302 to close, at this time, the static electricity of the human body is pre-discharged through the resistor 401, and the electric shock feeling of the human body can be eliminated by selecting the resistance value of the resistor 401;
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 specific tests, most of the conditions (such as 100 megohms) can be satisfied by taking 50 megohms to 200 megohms. The resistor is the total resistance of electrostatic overcurrent.
④ the touch ball 101 is continuously pressed to drive the stroke rod 202 to continue to make stroke movement, the stroke rod 202 touches the normally open stroke switch 301 to close, at this time, the human body is directly grounded, and the static electricity of the human body is completely released.
⑤, when the hand is released, the travel rod 202 and the touch ball 101 are driven to reset under the action of the spring 201, and the next operation of eliminating the static electricity of the human body is waited.
Further, an nth normally open travel switch and a resistor can be arranged before the normally open travel switch 301 in the travel of the travel rod, so that n times of pre-discharge are carried out, wherein n is the number of times of pre-discharge. The pre-discharge is performed to further reduce the shock to the human body when the static electricity is discharged, so the resistance should be set from large to small (according to the specific situation, it can be selected from large to small at 1 mega ohm-1000 mega ohm), for example, 3 times of pre-discharge is set, and the resistance can be set to 100 mega ohm, 50 mega ohm, 1 mega ohm.
Further, a resistor (with a resistance value of 10 mega ohm to 1000 mega ohm) can be connected between the touch ball 101 and the support 103, and when the touch ball 101 is touched by a hand, the human body static electricity pre-discharge is started.
FIG. 2 is a circuit diagram of a serial indicator light according to the present invention. The safety explosion-proof indicator lamp is composed of a power supply E, a normally open travel switch and an LED loop, wherein when the normally open travel switch is successfully operated, the LED emits light to indicate, and the LED is an intrinsically safe explosion-proof indicator lamp.
In the embodiment, the normally open travel switch can be popularized as an explosion-proof normally open travel switch.
In an embodiment, the normally open travel switch comprises a micro travel switch with a roller, such as the existing models: KAILAN (V-156-1C25), V-15/151/152/153/154/155/156/1B5-1C25, and the like.
In the embodiment, the spring 201 plays a role in resetting and is popularized as an elastic resetting device.
In an embodiment, the conductive material may be a metallic material, such as stainless steel.
Fig. 3 is an embodiment of the present invention for adding mechanical ring alert. The implementation scheme is a passive prompting solution, has the function of prompting by ringing after the completion of the static electricity release of the human body, and has the working principle that: a contact 503 is arranged, the other end of the contact 503 is a knocking hammer 502, when the stroke of the stroke rod 202 reaches the limit position, the stroke rod 202 and the contact 503 are in collision with each other, the stroke rod 502 is driven to knock the bell body 501 to sound, and therefore the completion of the electrostatic discharge of a human body is prompted.
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 value of the resistor provided by the invention can be understood as a recommended value, the protection range of the resistor is not necessarily limited, and the reference implementation is specifically carried out according to the standard of the related industry, such as GB4385-1995 (the recommended value is 100k omega-1000M omega), GB/T11210 2014 (the recommended value is not more than 300M omega), GJB 2605 1996, GB 12014 1989, and the industry standard SY/T7354-2017 (the recommended value is 10 Megaohm-1000 MegaOhm).
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 (9)
1. A human body static electricity releasing ball is characterized in that: the touch ball type travel switch at least comprises a touch ball, an elastic reset device, a travel rod, at least two groups of normally-open travel switches, a resistor and a ground wire, wherein the travel rod is connected to the touch ball and can do travel motion along an axis, the normally-open travel switches are sequentially arranged according to time sequence in the travel, one end of a normally-open travel switch (302) is connected to the touch ball, the other end of the normally-open travel switch is connected to the ground wire after being serially connected with a resistor (401), one end of a normally-open travel switch (301) is connected to the touch ball, the other end of the normally-open travel switch is connected to the ground wire, when the touch ball is pressed by a hand, the travel rod is driven to do travel motion, when the travel rod touches the normally-open travel switch (302), the normally-open travel switch is closed, human static electricity is pre-discharged through the resistor (401), the touch ball is continuously pressed, the travel rod is driven to continue the, the static electricity of the human body is directly transmitted to the ground wire through the touch ball touched by the hand and then is completely released, and after the hand is released, the touch ball is reset under the action of the elastic reset device, and the normally open stroke switch loses the touch of the stroke rod and is opened.
2. The human body static electricity discharging ball as claimed in claim 1, wherein: the device also comprises an nth normally-open travel switch and a resistor, wherein n times of pre-discharge are carried out, and n is the number of times of pre-discharge.
3. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: the resistance is 4 kilo-ohms to 600 mega-ohms.
4. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: the resistance is 1 megohm-200 megohm.
5. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: and the indicating lamp string is connected in the loop of the normally open travel switch and is used for indicating the working state of the normally open travel switch.
6. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: the normally open travel switch is an explosion-proof normally open travel switch.
7. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: the elastic reset device consists of a spring.
8. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: the device also comprises an electrostatic detection device which is used for detecting the electrostatic discharge effect and prompting by sound or light.
9. The human body static electricity discharging ball as claimed in claim 1 or 2, wherein: mechanical ringing is also included, and the ringing prompts after the static electricity of the human body is released.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093903.4A CN111359089A (en) | 2020-02-14 | 2020-02-14 | Human body electrostatic discharge ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010093903.4A CN111359089A (en) | 2020-02-14 | 2020-02-14 | Human body electrostatic discharge ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111359089A true CN111359089A (en) | 2020-07-03 |
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ID=71198644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010093903.4A Pending CN111359089A (en) | 2020-02-14 | 2020-02-14 | Human body electrostatic discharge ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111359089A (en) |
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2020
- 2020-02-14 CN CN202010093903.4A patent/CN111359089A/en active Pending
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