TWM553543U - Wearable grounding electrostatic removal device - Google Patents

Description

Wear grounded static elimination device

This creation is about static elimination devices, especially a grounded static elimination device.

Generally, in an electronic assembly work environment, or in a relatively dry area (such as a geographically northerly region), static electricity is easily accumulated due to large static electricity or lack of moisture. When the static electricity is large enough, it is easy to generate a surge. Excessive surges can cause the contactor to feel pain, and even damage the electronic components or equipment. Therefore, it is necessary to apply an antistatic device to avoid damage caused by electrostatic discharge.

The traditional electronic assembly factory designed an electrostatic grounded wristband (or foot ring) to solve the problem of static electricity. For example, one end of the wire is grounded at the factory, and the other end is in contact with the operator's body. The inside of the wire is connected in series with a 1MΩ (1/ 4W) resistance, the purpose of this resistor is to prevent the operator from being injured by contact with high voltage. When the operator accidentally touches the electricity (such as 220V or 330V high voltage), and the current exceeds 0.5A, the 1MΩ resistor will It burns to form an open circuit, thus preventing the operator from continuously injuring the high-voltage electric shock and achieving the protection effect.

However, the grounding type bracelet of the above-mentioned conventional technology, the series connection of the 1M Ω resistor will cause electrostatic residual voltage of 50~100V. For example, when a factory operator wears this grounded wristband, when the human body has static electricity of 1kV or more, the static electricity will be vented to the earth through the wristband. However, since the wristband string has a 1MΩ resistance, it will take about 0.1 second. The static electricity is vented from 1kV to about 100V~150V, and the static electricity of 100V~150V needs to be slowly reduced to a static voltage of about 50V after a period of time. However, the electrostatic discharge waveform is described in the electrostatic regulation IEC61000-4-2 standard. The electrostatic discharge time is only 0.1μs (microseconds), while the traditional grounded electrostatic wristband takes 0.1 seconds or more to remove static electricity. Therefore, static electricity still has the opportunity to discharge static sensitive electronic parts during this period. Permanent damage.

Since the semiconductor process has entered a level below 10 nm, the IC parts manufactured by the process are more sensitive to static electricity. The IC's electrostatic HBM withstand capability has slowly dropped from 4kV 10 years ago to less than 1kV today, so it also tests the electrostatic protection capability of IC manufacturing and factory assembly, especially for components that are more sensitive to static electricity such as RF components or other IC components or The device, even less than 50V of static electricity, is sufficient to cause direct damage to the IC component or potential damage. Therefore, for these IC components that are more sensitive to static electricity, the conventional electrostatic grounding wristband has been unable to effectively eliminate static electricity for electrostatically sensitive IC components or devices.

Therefore, this case hopes to propose a brand new wear-resistant grounding static elimination device. To solve the above-mentioned drawbacks of the prior art.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the prior art. In the present invention, a grounded static elimination device is proposed, which is mounted on a portable object with a metal piece connected to a parallel high-impedance resistor and fuse, and The high-impedance resistor and the other end of the fuse are connected to a grounded conductor. An electrostatic suppression component (such as a transient voltage suppression diode) can be connected in series between the metal piece and the fuse, and the static electricity generated by the human body can be quickly eliminated by the structure, and the residual electrostatic voltage is relatively low. Without causing damage to other electronic components. Therefore, the structure of the present case can simultaneously protect the user and prevent residual electrostatic voltage from damaging the surrounding electronic components. Moreover, when the human body is in contact with high voltage power, the fuse can be effectively blown to protect the user, and the high impedance resistor can be used to maintain the function of eliminating static electricity. In this case, the LED lamp resistor can also be connected between the static electricity suppressing element and the fuse, and the type of electrostatic charge and the effect of the elimination can be effectively displayed through the light, so that the user is more accustomed to wearing the portable object.

In order to achieve the above object, a wearable grounding static elimination device is proposed in the present invention, comprising: a portable object, comprising: a metal piece; wherein the metal piece is exposed on a surface of the portable object, so that the metal piece can be contacted during use. To the body part of the user; a fuse (Fuse) whose left end is connected to the metal piece; a high-impedance resistor whose left end is connected to the metal piece; wherein the high-impedance electricity The impedance of the resistor is greater than the impedance of the fuse; a wire whose left end is connected to the right end of the fuse and the right end of the high-impedance resistor, the right end of the wire is grounded; therefore, the fuse is formed between the metal piece and the wire And the high-impedance resistor; wherein the portable object is worn on the user when in use, wherein the metal piece contacts the user's body, and the right end of the wire is grounded, when the user generates static electricity, since the fuse has The lower impedance makes the static electricity pass through the fuse and then the grounded end of the wire is vented to the ground to eliminate the static electricity. When the user touches the high voltage, the fuse can be melted and disconnected immediately. In addition, the user is protected from the risk of electric shock; wherein when the fuse is burned, an open circuit state is formed, and static electricity generated by the user can continue to flow to the wire through the circuit of the high-impedance resistor, and grounded via the wire. One end eliminates static electricity and maintains the electrostatic protection of the entire body. The portable object further includes an electrostatic suppression component connected in series between the left end of the fuse and the metal piece, so that the static suppression component and the high-resistance resistance are formed between the metal piece and the wire; The impedance of the high impedance resistor is greater than the impedance of the static suppression component. The static suppression element is a transient voltage suppression diode (TVS diode), wherein the transient voltage suppression diode includes an operating voltage (Vrbw), a breakdown voltage, and a Clamping voltage between two voltages. An LED lamp set is connected in series between the static suppression component and the fuse, and includes two LED lamp bodies connected in parallel, which are connected in parallel in a forward and reverse manner, wherein one LED lamp body is forwardly connected The other LED body is a reverse link.

The features of the present invention and its advantages can be further understood from the description below, and please refer to the attached drawings when reading.

10‧‧‧metal pieces

20‧‧‧Fuse

30‧‧‧High impedance resistance

40‧‧‧ wire

50‧‧‧Electrostatic suppression element

60‧‧‧Transient voltage suppression diode

70‧‧‧LED light group

71‧‧‧LED body

72‧‧‧LED body

80‧‧‧Low-impedance resistor

100‧‧‧ bracelet

Figure 1 shows a schematic diagram of the circuit structure of the present case.

Figure 2 shows a schematic diagram of another circuit structure of the present invention.

Figure 3 shows a schematic diagram of another circuit structure of the present invention.

Figure 4 shows a schematic diagram of another circuit structure of the present invention.

Figure 5 shows an application example of this case.

In view of the structural composition of the case, and the functions and advantages that can be produced, in conjunction with the drawings, a preferred embodiment of the present invention is described in detail below.

Referring to FIG. 1 to FIG. 5, the wearable grounding static elimination device of the present invention is shown, which includes the following components:

A carry-on object 1, containing:

A metal sheet 10; wherein the metal sheet 10 is exposed on the surface of the portable object 1 such that the metal sheet 10 can contact the body part of the user during use.

A fuse 20 has a left end connected to the metal piece 10. Preferably, the fuse 20 has a fuse value of less than or equal to 0.5 A. Generally, the internal impedance of the fuse 20 is less than 0.5 Ω.

A high-impedance resistor 30 has a left end connected to the metal piece 10. The impedance of the high-impedance resistor 30 is greater than the impedance of the fuse 20. Preferably, the high-resistance resistor 30 has a resistance value of 1 MΩ.

A wire 40 has a left end connected to the right end of the fuse 20 and a right end of the high-impedance resistor 30. The right end of the wire 40 is grounded.

Therefore, the fuse 20 and the high-impedance resistor 30 (shown in FIG. 1) are formed in parallel between the metal piece 10 and the wire 40.

An electrostatic suppression element 50 is connected in series between the left end of the fuse 20 and the metal piece 10 such that the static suppression element 50 and the high-impedance resistor 30 are formed in parallel between the metal piece 10 and the wire 40. The impedance of the high-impedance resistor 30 is greater than the impedance of the static suppression element 50. In this example, the static suppression element 50 can be a transient voltage suppression diode (TVS diode) 60.

In the use, the portable object 1 is worn on the user, wherein the metal piece 10 is in contact with the user's body, and the right end of the wire 40 is grounded. When the user generates static electricity, the static suppression element 50 The fuse 20 has a lower impedance so that static electricity preferentially passes through the static suppression element 50 and the end of the fuse 20 that is grounded through the wire 40 is vented to the ground to eliminate static electricity.

When the user unfortunately touches the high voltage (such as 220V to 330V), the fuse 20 can be immediately melted and disconnected, thereby protecting the user from the danger of electric shock. When the fuse 20 is burned off, an open state is formed, and static electricity generated by the user can continue to flow to the wire 40 through the circuit of the high-impedance resistor 30, and the grounded end via the wire 40 removes static electricity. The double electrostatic elimination path is designed to achieve better electrostatic elimination and maintain the electrostatic protection of the entire portable object 1.

As shown in FIG. 2, in the present case, the portable object 1 may not include the static suppression element 50, and only the fuse 20 and the high-resistance resistor 30 are retained, so that the effect is better, but this is equivalent to the user only transmitting the fuse. 20 is grounded. For the sake of user safety, in the present case, the portable object 1 is preferably added to the static suppression element 50.

The transient voltage suppression diode 60 includes an operating voltage (Vrbw), a breakdown voltage, and a clamping voltage between the two voltages. The transient voltage suppression diode 60 has parasitic capacitance characteristics and directivity. In the present case, the transient voltage suppression diode 60 is a bi-directional transient voltage suppression diode, so that it is positively charged. Both the static electricity and the negatively charged static electricity can suppress the diode 60 through the transient voltage.

Wherein the transient voltage suppression diode 60 has a parasitic capacitance characteristic when When the user wears the portable object 1, the transient voltage suppressing diode 60 normally exhibits a capacitive characteristic as an open state. When static electricity is generated on the user, static electricity flows from the metal piece 10 to the transient voltage suppression diode 60 having a lower impedance, and when the electrostatic voltage is higher than the transient voltage, the breakdown voltage of the diode 60 is suppressed (eg, 10V, according to the selected transient voltage suppression characteristic of the diode 60), the transient voltage suppression diode 60 will be turned on instantaneously within about 0.1 μs, and at this time, the transient voltage suppresses the diode 60 The internal impedance is less than about 0.1 Ω, so that the static electricity suppresses the diode 60 through the transient voltage, and then passes through the fuse 20 and the wire 40, and the grounded end via the wire 40 flows into the ground to reach a fast (0.1 μs time). ) and completely eliminate the purpose of static electricity.

In this case, the diode can be suppressed by using a transient voltage of different characteristics, and the clamping voltage of the extremely low voltage (about 5V~10V) can be maintained after the electrostatic voltage is vented. In the present case, the transient voltage suppressing diode 60 reacts extremely fast and can be turned on instantaneously in 0.1 μs (microseconds), and at this time, the internal voltage of the transient voltage suppressing diode 60 is less than about 0.1 Ω, and Static electricity is introduced from the ground to which the wire 40 is grounded to the ground.

Through experiments, this case can use the appropriate transient voltage suppression diode 60 and fuse 20, and can withstand 30kV electrostatic shock without burning, if the DC or AC voltage is encountered and the current is close to 0.5A, the fuse 20 can Effectively burned to protect the safety of users. And the transient voltage suppressing diode 60 has an internal impedance of about 0.1 Ω when turned on, and the internal impedance of the fuse 20 is less than 0.5 Ω, because The sum of the impedances of the two is less than 0.6 Ω. Compared with the high-impedance resistor 30 connected in parallel, the transient voltage suppresses the impedance of the path of the diode 60 and the fuse 20 to be very low, and the impedance is lowered due to the electrostatic discharge. The path, therefore, the static electricity will take the transient voltage suppression diode 60 and the fuse 20 to achieve the purpose of quickly and completely eliminating static electricity to the ground.

The static suppression element 50 may also be a variable resistor (Varistor), a Zener diode, or a polymer suppressor. In the present case, the transient voltage suppression diode 60 has the best electrostatic suppression effect, and the transient voltage suppression diode 60 has the advantages of fast response, extremely low impedance after startup, and high static current resistance.

When it is desired to detect whether the internal component of the portable object 1 is faulty, the electric meter can be used to measure whether the impedance of the metal piece 10 to the ground end of the wire 40 is about 1 MΩ. For precision inspection, the fuse 20 can be measured for blown.

As shown in FIG. 3, in the present case, an LED lamp group 70 can be connected in series between the static suppression component 50 and the fuse 20, and includes two LED lamp bodies 71 and 72 connected in parallel, which are connected in parallel in a forward and reverse manner, wherein one LED is connected. The lamp body 71 is connected in the forward direction, and the other LED lamp body 72 is connected in the reverse direction.

When the user generates static electricity, an electrostatic current will pass through the static suppression element 50 and the LED light group 70, causing the LED light group 70 to illuminate. Wherein the user generates a positively charged static electricity and the electrostatic voltage is greater than the forward connection When the starting voltage of the LED lamp body 71 is applied, the LED lamp body 71 that is connected in the forward direction is driven to emit light; when the user generates static electricity having a negative charge and the electrostatic voltage is greater than the starting voltage of the negatively connected LED lamp body 72, The LED lamp body 72 that drives the reverse connection emits light. Therefore, the color and brightness of the two LED lamps 71 and 72 can indicate the type and strength of the positive or negative charge of the static electricity.

The two LED lamp bodies 71 and 72 can have different illumination colors. For example, the LED fiber body 71 that is connected in the forward direction can emit red light, and the LED lamp body 72 that is connected in the opposite direction can emit blue light. Therefore, the user can know whether the portable object 1 eliminates a positive static charge or a negative static charge via the illuminating color.

Preferably, the two LED lamps 71 and 72 are LED lamps with high brightness and high current, and can withstand higher electrostatic current. Therefore, it can be avoided that the two LED lamp bodies 71 and 72 are damaged by an instantaneous large electrostatic current generated by a high static voltage (such as Electrostatic Discharge (ESD) to 20 kV to 30 kV).

To use a general LED lamp set, a low-impedance resistor 80 (shown in FIG. 4) can be connected in series between the LED lamp set 70 and the fuse 20 in the present case, and the resistance value is about several tens of ohms.

The application example of the present invention is as follows. The portable object 1 is a hand ring 100 (shown in FIG. 5 ), wherein the metal piece 10 is exposed outside the hand ring 100 , and the wire 40 is from one end of the hand ring 100 . External extension; when the user wears the bracelet 100, the metal sheet 10 touches the human body, thereby eliminating the human body The static electricity generated. The wristband 100 can be a pure wristband for static elimination only, or a different wristband wearing device that is popular in various health bracelets, communication bracelets, watches, or smart watches.

In this case, a metal piece is mounted on a portable object, which is connected with a parallel high-impedance resistor and a fuse, and the other end of the high-impedance resistor and the fuse is connected to a grounded wire. An electrostatic suppression component (such as a transient voltage suppression diode) can be connected in series between the metal piece and the fuse, and the static electricity generated by the human body can be quickly eliminated by the structure, and the residual electrostatic voltage is relatively low. Without causing damage to other electronic components. Therefore, the structure of the present case can simultaneously protect the user and prevent residual electrostatic voltage from damaging the surrounding electronic components. Moreover, when the human body is in contact with high voltage power, the fuse can be effectively blown to protect the user, and the high impedance resistor can be used to maintain the function of eliminating static electricity. In this case, the LED lamp resistor can also be connected between the static electricity suppressing element and the fuse, and the type of electrostatic charge and the effect of the elimination can be effectively displayed through the light, so that the user is more accustomed to wearing the portable object.

In summary, the humanized design of this case is quite in line with actual needs. The specific improvement of the existing defects is obviously a breakthrough improvement advantage compared with the prior art, and it has an improvement in efficacy and is not easy to achieve. The case has not been disclosed or disclosed in domestic and foreign literature and market, and has complied with the provisions of the Patent Law.

The detailed description above is a detailed description of one of the possible embodiments of the present creation. However, the examples are not intended to limit the scope of the patents of the present invention, and equivalent implementations or modifications that do not depart from the spirit of the present invention are included in the scope of the patent.

10‧‧‧metal pieces

20‧‧‧Fuse

30‧‧‧High impedance resistance

40‧‧‧ wire

50‧‧‧Electrostatic suppression element

60‧‧‧Transient voltage suppression diode

Claims (11)

A wearable grounding static elimination device comprises: a portable object, comprising: a metal piece; wherein the metal piece is exposed on a surface of the portable object, so that the metal piece can contact the body part of the user during use; a fuse (Fuse), the left end of which is connected to the metal piece; a high-impedance resistor whose left end is connected to the metal piece; wherein the impedance of the high-impedance resistor is greater than the impedance of the fuse; a wire whose left end is connected to the right end of the fuse and the a right end of the high-impedance resistor, the right end of the wire is grounded; thus forming a fuse and the high-impedance resistor connected between the metal piece and the wire; wherein the portable object is worn on the user when in use, wherein the The metal piece is in contact with the user's body, and the right end of the wire is grounded. When the user generates static electricity, the fuse has a lower impedance, so that the static electricity preferentially passes through the fuse and then the grounded end of the wire is vented to the earth ( Ground), to eliminate static electricity; when the user touches high voltage, the fuse can be melted immediately Open, thereby protecting the user does not suffer a shock hazard; wherein when the fuse is burning When it is dropped, an open state is formed, and the static electricity generated by the user can continue to flow to the wire through the circuit of the high-impedance resistor, and the grounded end through the wire excludes static electricity, and the electrostatic protection of the entire portable object can be maintained. The wearable grounding static elimination device of claim 1, wherein the portable object further comprises an electrostatic suppression component connected in series between the left end of the fuse and the metal piece, so that the metal piece and the metal piece And forming the parallel connection between the wires and the high-resistance resistance; wherein the impedance of the high-impedance resistor is greater than the impedance of the static-suppressing element. The wearable grounding static elimination device of claim 2, wherein the static suppression element is a transient voltage suppression diode (TVS diode); wherein the transient voltage suppression diode comprises A working voltage (Vrbw), a breakdown voltage, and a clamping voltage between two voltages. The wearable grounding static elimination device of claim 3, wherein the transient voltage suppression diode has directivity, and the transient voltage suppression diode is bi-directional transient voltage. The diode is suppressed such that positively charged static electricity and negatively charged static electricity can suppress the diode through the transient voltage. The wearable grounding static elimination device according to claim 3, wherein the transient voltage suppression diode has a parasitic capacitance characteristic, and when the user wears the portable object, when the electrostatic value is relatively low, the transient Voltage suppression The diode exhibits a capacitive characteristic as an open state; when static electricity is generated on the user, static electricity flows from the metal piece to the transient voltage suppressing diode having a lower impedance, when the electrostatic voltage is higher than the transient voltage suppression When the polar body collapses voltage, the transient voltage suppression diode will be turned on instantaneously within about 0.1 μs, and at this time, the internal voltage of the transient voltage suppression diode is less than about 0.1 Ω, so that static electricity passes through the transient. The voltage suppresses the diode, and then passes through the fuse and the wire, and the grounded end through the wire flows into the ground to achieve rapid and complete elimination of static electricity. The wearable ground static elimination device according to claim 2, wherein the static suppression element is a variable resistor (Varistor), a Zener diode, or a polymer suppressor. One. The wearable grounding static elimination device of claim 2, wherein an LED lamp group is serially connected between the static suppression component and the fuse, and two LED lamps are connected in parallel, and the parallel connection is performed in a forward and reverse manner, wherein One LED lamp body is connected in the forward direction, and the other LED lamp body is in the reverse connection. The wearable grounding static elimination device of claim 7, wherein the two LED lamps have different illumination colors, so that the user can know whether the portable object eliminates a positive or negative static charge via the illumination color. The wearable grounding static elimination device according to claim 1, wherein the high-impedance resistance has a resistance value of 1 MΩ. The wearable grounding static elimination device of claim 1, wherein the portable object is a hand ring, the metal piece is exposed outside the hand ring, and the wire extends outward from one end of the hand ring; When the user wears the bracelet, the metal piece touches the human body, thereby eliminating static electricity generated by the human body. The wearable ground static elimination device according to claim 10, wherein the wristband is a health bracelet or a communication bracelet.