JP3044401U - Armband type static eliminator - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a wristband type static eliminator capable of detecting and displaying a disconnection of a grounding conductor. SOLUTION: One circuit test line is examined by using one oscillation circuit, and this circuit test line is grounded to eliminate static electricity generated during the production process, and this circuit test line is cut to remove the static electricity. When the grounding condition is absent, the oscillator circuit vibrates to generate one frequency, which causes the internal buzzer to generate a sound, warn the user of the disconnection of the circuit test line, and use the armband. It has one LCD screen on the upper body to display time.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of wrist strap type static eliminator, and in particular, it discharges static electricity generated in the human body to the ground, and is worn by manufacturing workers when manufacturing products such as semiconductor parts that are easily damaged by static electricity. The present invention relates to a product provided with a display screen that is useful for maintaining the quality of products and is capable of displaying when the grounding wire is broken or has a grounding failure.

[0002]

[Prior art]

 Modern electronic products, especially advanced science and technology products such as communication equipment and computers, tend to be manufactured using a single chip. In a so-called single chip, all the components provided on the circuit are hardened in one chip, which achieves the purpose of simplifying the electric circuit and reducing the volume. Large integrated circuits (LSI) and ultra-large Form an integrated circuit (VLSI). Nowadays, due to technological progress, CMOS (COMPL ENTRY-SYMMETRY METAL OXIDE SEMICONDUCTER) is manufactured, but this CMOS device has a drawback that it is easily destroyed by static current.

During the manufacturing process, if the manufacturer does not take anti-static measures, the failure rate of CMOS electronic components will increase significantly, and the stability of the manufactured products will be low and the manufacturing cost will be high. Therefore, high profits tailored to the industrial level cannot be expected. For this reason, antistatic problems cannot be neglected during the entire manufacturing process, and vendors are paying attention to the development and development of antistatic technology.

FIG. 1 shows a conventional arm band type electrostatic tester. The electrostatic detector 1 is connected to the tester main body 3 by one test lead wire 2. The static electricity detection unit 1 only transfers the static electricity generated by the human body to the tester main body 3 via the test lead wire 2, and the static electricity detection unit 1 and the tester main body 3 form one circuit by the test lead wire 2. This circuit can inspect whether the test lead wire 2 is broken, but since the tester main body 3 does not provide the condition for grounding, it is not possible to eliminate the static electricity, but the test lead wire 2 is broken. It can only detect whether or not there is. Therefore, in actual use, that is, when the test conductor 2 was grounded to remove static electricity, it was not possible to check whether or not the test conductor 2 was broken.

FIG. 2 shows another type of conventional wrist strap type electrostatic tester, the tester body 4 of which reduces the electric circuit in the tester body 3 and is mounted on the wrist strap. , The test method is changed from the test button pressing method to the automatic test. This conventional wrist strap type electrostatic tester also has no possibility of implementation. The cause is as follows. 1. When the connection status of the test lead wire 2 is the same as the conventional one, that is, one end of the test lead wire 2 is inserted into the tester main body 4 and the other end is connected to the conductive plate on the bottom of the tester main body 4 to form a circuit. If so, it is possible to detect whether or not the test lead wire 2 is broken, but it was not possible to eliminate static electricity to the ground. 2. If the test lead wire 2 is connected to the ground and the tester body 4, the test lead wire 2, the ground, and the human body are arranged in a unidirectional straight line to form a circuit, static electricity can be eliminated, but the test lead wire 2 It was not possible to detect whether or not the wire was broken. In addition, it is not good for workers to wear a wrist strap type electrostatic tester and a wristwatch when entering a production line in a general factory because the wristwatch may become a conductor and secondary electrostatic discharge may occur. Therefore, there was a problem that the workers could not grasp the progress of time sufficiently. However, if the time display function can be coupled to the wrist strap type electrostatic tester, this problem will be solved.

[0006]

[Problems to be solved by the device]

 The main purpose of the present invention is to detect whether or not the grounding conductor is broken, and to display the status and time display function, and the grounding conductor forms a circuit. The purpose is to provide a kind of armband type static eliminator that can be checked whether or not the detection line and the detection line form one complete circuit and is convenient to use depending on the type of armband.

[0007]

[Means for Solving the Problems]

 According to the first aspect of the present invention, one upper lid 5 is made of an insulating material, a timepiece internal component mounting base 6 is provided thereunder, and two push button holes are provided in recesses on both left and right sides. One display screen frame 52 is provided in the rear, a protruding conductor insertion seat provided with a conductor insertion hole 53 is provided in the rear, and a screw coupling column corresponding to the screw hole position of the conductive plate 9 is provided inside. And one internal part 6 for the watch, and two time adjustment push buttons 61 and 62 used for adjusting the time setting are provided in the recesses on the left and right sides of the watch base, and one is installed in the front. A display screen frame 63 is provided and a display screen 64 is installed, and a conductive rubber member 66 is connected to the upper surface of the circuit board 8 to transmit a signal output from the circuit board 8 to the display screen 64, and a screw is provided on the bottom surface. A chain pillar 65 is installed. One of the circuit boards 8 is located in the upper lid 5, the upper surface is connected to one conductor insertion seat and the display screen 64, and one conductive rubber member 66 is provided to the display screen 64. , And the back side is connected to one battery stopper 81 and one buzzer 82. The battery stopper 81 serves as the negative end of the power source, and the static electricity and the ground conductor 7 are disconnected in the circuit board 8. One that is provided with one control circuit that detects whether or not there is one conductive plate 9 that serves as the bottom plate of the upper lid 5 and that contacts the skin of the human body. A pivoting piece 92 used to pivotally connect to each other is provided, and four screw holes are provided at a position corresponding to the screw coupling post 65 of the timepiece inner part mounting base 6, and one armband. 91, and is used by being pivotally connected to both front and rear sides of the conductive plate 9 by a pivot column. One to be worn by a person and one grounding conductor 7, the plug of which is inserted into the conductor inserting seat of the upper lid 5, the conductor inserting seat and the conductive plate 9 are connected to each other, and the grounding conductor 7 The plug at the other end of the one is connected to one male / female connector and one clip. It is equipped with the above, and the members such as the display screen 64 and the circuit board 8 are connected to the watch internal component mounting base 6 with screws, and the upper lid is attached. 5, the buzzer 82 and the conductive plate 9 are attached, the arm bands 91 are pivotally connected to the pivoting pieces 92 on both sides of the conductive plate 9, and the plug at one end of the grounding wire 7 is attached to the upper lid 5. By inserting it into the conductor insertion hole 53 and connecting the clip at the other end to the ground or a public grounding system, the control circuit forms a circuit with the ground or a public grounding system to discharge the static electricity of the human body to the ground. And detect the presence or absence of disconnection. It is characterized by a wrist strap type static eliminator.

According to the second aspect of the present invention, the control circuit is an alarm output integrated circuit 83 for one time, which is connected to one quartz oscillator and a plurality of capacitors to form a time oscillating circuit. It is connected to a push button, is used for time adjustment, and is provided with a plurality of output terminals connected to the display screen 64 to display time on the display screen 64. When it does not exist and the static electricity of the human body cannot be discharged to the ground, it generates one vibration frequency and outputs it through one Schmitt circuit, and one fault oscillator 85. There are two output frequencies. The one that is generated and output to the display screen 64 is one alarm oscillator 86, which vibrates the fundamental frequency and outputs one information. At this frequency, one buzzer sounds When a worker inadvertently cuts off the grounding conductor 7 or a grounding failure occurs, the vibration frequency passes through the opposite phase output of one Schmitt circuit and fails. It is output to the oscillator 85 and the alarm oscillator 86, both of which work at the same time, and the faulty oscillator 85 has no ground condition at the input end X, and the static electricity of the human body cannot be discharged to the ground. At this time, the fundamental frequency oscillator 84 generates one vibration frequency, the vibration frequency goes through the antiphase output of the Schmitt circuit, takes the antiphase working cycle, and is divided into two lines after the output, one of which is The fault oscillator 85 and the alarm oscillator 86 are the other, both of which work simultaneously. The fault oscillator 85 is divided into two paths, one of which is further connected to the display screen 64 through antiphase by one Schmitt circuit, and the other input is further connected through the oscillator circuit to one of the comparative circuits. The high frequency is connected to the display screen 64, and the display screen 64 outputs the failure information of one FAIL by these two frequencies, and the alarm vibrator 86 vibrates this basic frequency signal and outputs one information. This frequency is transmitted to one end of the buzzer 82, the other end of which is connected to the alarm output integrated circuit 83 for a time. This frequency causes the buzzer 82 to generate one warning sound and the output of the fault oscillator 85. The feature is that the worker can receive the failure occurrence information with his eyes and ears by combining with the information.

[0009]

[Embodiment of the invention]

 This invention is a kind of armband type static eliminator, which uses one oscillation circuit to examine one circuit test line, and this circuit test line is grounded form, and the static electricity generated during the production process. When this circuit test line is cut off and the condition for this grounding is absent, the oscillator circuit vibrates and one frequency is generated, causing the internal buzzer to generate sound and It warns the disconnection of the circuit test line, and has one liquid crystal screen on the electrostatic detection part to display the time.

[0010]

【Example】

 3 is an exploded perspective view of the present invention, and FIG. 4 is a three-dimensional view. The upper lid 5 is made of an insulating material, a single watch internal component mounting base 6 is provided below the upper lid 5, and push button holes 51 are provided in the recesses on the left and right sides of the upper lid 5, respectively. One display screen frame 52 is provided at the rear side of the upper cover 5, and one protruding wire insertion hole 53 is provided at the rear of the upper lid 5.

The timepiece internal component mounting base 6 has a shape and appearance corresponding to those of the upper lid 5, and at the same time, the inside of the upper lid 5 has a screw coupling post (not shown in the figure) corresponding to the screw hole position of the conductive plate 9. 2) are provided, and two time adjustment push buttons 61 and 62 used for adjusting the time setting are provided in the recesses on the left and right sides of the timepiece internal parts mounting base 6, respectively, and the time adjustment push buttons are provided. 61) 62 is inserted into the push button hole 51 of the upper lid 5. One display screen frame 63 is provided in front of the watch internal component mounting base 6 and is used for placing a display screen 64 (LCD), and after being attached, it is placed in the display screen frame 52 of the upper lid 5. On the bottom side of the timepiece internal component mount 6, a screw chain coupling column 65 is provided. One end of the grounding wire 7 is one plug 71, which is inserted into the wire insertion hole 53, the other end is also a plug 72, and is connected to one clip 74 via one male and female plug 73. It is possible to select and use differently depending on the grounding socket type. The grounding conductor 7 is a two-wire circuit and is used to connect to a ground or public grounding system.

A single display screen 64 is fitted under the display screen frame 63 of the timepiece internal parts mounting base 6 and is used to display a signal output at the time and disconnection or grounding failure. One conductive rubber member 66 is provided below the display screen 64. The conductive rubber member 66 is connected to the upper surface of the circuit board 8 and transmits a signal output from the circuit board 8 to the display screen 64. A battery stopper 81 is provided on the lower surface of the circuit board 8, and the battery stopper 81 is connected to the lower surface of the circuit board 8 with a screw to serve as a negative end of the circuit board 8 and a positive end of the battery. Is connected to the positive side of the power source of the circuit board 8, and the negative pole is connected to the battery stopper 81 to form one power source circuit. One buzzer 82 is provided below the battery stopper 81, and when the wire is disconnected or the ground is not properly connected, one alarm sound is generated to prompt the user to take appropriate measures. One conductive plate 9 is provided below the conductive plate 9, and the conductive plate 9 is used in contact with the user's skin to transfer the static electricity on the body to the grounding conductor 7 and discharge it to the public grounding system or the ground. Let The conducting plate 9 is pivotally connected to the arm band 91 by pivoting pieces 92 provided on both front and rear sides thereof, and is provided for wearing by a user. Further, in the conductive plate 9, four screw holes are provided at positions corresponding to the screw chain interlocking columns inside the upper lid 5. At the time of assembly, the circuit board 8 is attached to the watch internal component mounting base 6 with screws, placed in the upper lid 5, the buzzer 82 and the conductive plate 9 are further attached, and the above-mentioned components are placed in the upper lid 5 with screws. By combining and pivotally connecting the pivoting pieces 92 on both sides of the conductive plate 9 to the arm band 91, one complete individual is completed (as shown in FIG. 4).

FIG. 5 is a detailed electric circuit diagram of the present invention. The electric circuit is roughly divided into two parts, which are integrated circuits, one of which is used for output of time and alarm. Integrated circuit 83, which is connected to one quartz oscillator and a plurality of capacitors, is used as an oscillation circuit for time, and is connected to two push buttons 61 and 62, is used for time adjustment, and A plurality of output terminals are connected to the display screen 64 to display time.

The other part adopts a vibration integrated circuit (Schmidt circuit in the present invention) and outputs various frequencies required in the device. For example, in the alarm sound and the failure information of the buzzer 82, the oscillation circuits are classified according to the use of the generated frequency, and the fundamental frequency oscillator 85, which is the source of the vibration required by each oscillation circuit, and two different frequencies are generated. The display screen is divided into a fault oscillator 85 for generating one fault screen and an alarm oscillator 86 for generating one high frequency signal and generating a sound in the buzzer 82.

The output terminal X of this electric circuit diagram is used as the input terminal of the fundamental frequency oscillator 84, and is connected to the conductor wire insertion hole 53 of the upper lid 5 and the conductive plate 9, and after the plug 71 of the ground conductor wire 7 is inserted, The static electricity generated by the resistor is passed through a resistor R (the resistor R is regarded as a resistor R of high impedance, which protects the human body and protects the human body from the danger of electric shock). The clip 74 at the other end of the grounding conductor 7 And the clip 74 is connected to the ground to form a circuit.

During normal use, the static electricity of the human body passes through the conductive plate 9, the wire insertion hole 53, the plug 71 of the grounding wire 7, the grounding wire 7 and the clip 74 at the end into a public grounding system or the ground. Is emitted, at which time the input X is grounded and does not trigger the basic frequency oscillator 84, causing the current time to be displayed on the display screen 64.

When a worker inadvertently disconnects the grounding conductor 7 or a grounding failure occurs, the grounding condition of the input terminal X does not exist, and the static electricity of the human body cannot be discharged into the ground. At this time, the fundamental frequency oscillator 84 generates one vibration frequency, the vibration frequency goes through the antiphase output of the Schmitt circuit, takes the antiphase working cycle, and is divided into two lines after the output, one of which is The fault oscillator 85 and the alarm oscillator 86 are the other ones, both of which work simultaneously.

The fault oscillator 85 is also divided into two paths, one of which is connected to one terminal in the display screen 64 through the antiphase of one Schmitt circuit, and the other of which is connected to the Schmitt circuit. The vibration frequency of the output of the fundamental frequency oscillator 84 is output as a higher frequency, and it is connected to one terminal in the display screen 64. Due to these two output frequencies, one FAIL failure in the display screen 64 occurs. Output a signal.

At the time of the alarm oscillator 86, this fundamental frequency vibration is vibrated to output one high frequency data, and this frequency is transmitted to one end of the buzzer 82, and the other end is transmitted to the alarm output integrated circuit 83 for time and alarm. This alarm causes the buzzer 82 to generate a single warning sound, and by combining the data output from the time / alarm output integrated circuit 83 and the failure oscillator 85, the operator can obtain information on the occurrence of the failure with his eyes and ears. I am trying to receive it.

[0020]

[Effect of the invention]

 The advantages of the present invention are as follows. 1. During normal use, it is possible to display the time and let the worker grasp the time and perform the work, eliminating the need for the worker to carry the watch to the factory and to avoid the injury caused by the secondary electrostatic discharge. Can be prevented. 2. The oscillator circuit system is capable of accurately generating various frequencies required by the device. 3. Two types of warning information can be generated at the same time, and the operator can be immediately notified of the absence of the grounding condition, and a prompt corrective action can be performed. 4. The compact has an external appearance because the tester is connected inside the electrostatic detection part. 5. One clip is provided at the end of the grounding wire, and when the clip is removed, FAIL information appears on the display screen and an alarm sound is generated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a usage state of a conventional wrist strap type electrostatic tester.

FIG. 2 is a perspective view of a conventional wrist strap type static eliminator.

FIG. 3 is an exploded perspective view of the wrist strap type static eliminator of the present invention.

FIG. 4 is a three-dimensional structural view of the wristband type static eliminator of the present invention when viewed obliquely.

FIG. 5 is a detailed electric circuit diagram of a test circuit of the wrist strap type static eliminator of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electrostatic detection part 2 ... Test lead wire 3 ... Tester main body 4 ... Tester main body 5 ... Top lid 51 ... Push button hole 52 ... Display screen frame 53 ... Conductor wire Insertion hole 6 ... Watch internal parts mount 61 ... Time adjustment push button 62 ... Time adjustment push button 63 ... Display screen frame 64 ... Display screen 65 ... Screw chain post 6
6 ... Conductive rubber member 7 ... Ground conductor 71 ... Plug 72 ... Plug 73 ... Male / female connector 74 ... Clip 8 ... Circuit board 81 ... Battery stopper 82・ ・ ・ Buzzer 83 ・ ・ ・ Time and alarm output integrated circuit 84 ・ ・ ・ Basic frequency oscillator 85 ・ ・ ・ Failure oscillator 86 ・ ・ ・ Alarm oscillator 9 ・ ・
・ Conductive plate 91 ・ ・ ・ Wristband 92 ・ ・ ・ Pivot piece R ・ ・ ・ Resistance

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[Procedure amendment]

[Submission date] September 11, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

2. The control circuit is one time alarm output integrated circuit 83, which is connected to one quartz oscillator and a plurality of capacitors, is a time oscillating circuit, and is connected to two push buttons. , Which is used for time adjustment and provides a plurality of output terminals connected to the display screen 64 to display the time on the display screen 64, and one basic frequency oscillator 84, which does not have a ground condition and is When static electricity cannot be discharged to the ground, one oscillation frequency is generated and output through one Schmitt circuit, and one fault oscillator 85 is generated, generating two types of output frequencies and displaying them on the display screen 64. The one that outputs and the one alarm oscillator 86 that vibrates the basic frequency and outputs one information, and that generates one alarm sound on the buzzer at this frequency. When the worker inadvertently cuts off the grounding conductor 7 or a grounding failure occurs, the vibration frequency passes through the opposite phase output of one Schmitt circuit and fails. It is output to the oscillator 85 and the alarm oscillator 86, both of which work simultaneously, and the faulty oscillator 85 has no ground condition at the input terminal X,
The static electricity of the human body cannot be discharged into the earth. At this time, the fundamental frequency oscillator 84 generates one vibration frequency, the vibration frequency goes through the antiphase output of the Schmitt circuit, takes the antiphase working cycle, and is divided into two lines after the output, one of which is The fault oscillator 85 and the alarm oscillator 86 are the same, and both are simultaneously processed. In the fault oscillator 85, the fault oscillator 85 is divided into two paths, one of which is subjected to antiphase by the Schmitt circuit and the display screen 64. The other input is connected to the display screen 64 through the oscillation circuit to obtain one relatively high frequency, and the display screen 64 outputs the failure information of one FAIL by these two frequencies, and the alarm is issued. The vibrator 86 oscillates the fundamental frequency signal and outputs one piece of information, and this frequency is transmitted to one end of the buzzer 82, and the other end thereof is timed. Alarm output integrated circuit 8
3 is connected to the buzzer 82. This frequency causes the buzzer 82 to generate one warning sound, and in combination with the output information of the fault oscillator 85, the worker can receive the fault occurrence information with his / her eyes and ears. An armband type static eliminator according to claim 1. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 10, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

Claims (2)

[Utility model registration claims] 1. An upper lid 5 is made of an insulating material, a timepiece internal component mounting base 6 is provided therebelow, two push button holes are provided in recesses on both left and right sides, and one front lid is provided. A display screen frame 52 is provided, a projecting lead wire insertion seat provided with a lead wire insertion hole 53 is provided in the rear, and a screw chain post corresponding to the screw hole position of the conductive plate 9 is provided inside. One watch internal parts mounting base 6 is provided with two time adjustment push buttons 61 and 62 used for adjusting the time setting in the recesses on the left and right sides thereof, and one display screen frame 63 is provided in the front. Display screen 64 provided
Is installed, is connected to the upper surface of the circuit board 8 by the conductive rubber member 66, transmits a signal output from the circuit board 8 to the display screen 64, and has a screw coupling post 65 on the bottom surface. The two circuit boards 8 are located in the upper lid 5, and the upper surface is connected to one conductor insertion seat and the display screen 64, and one conductive rubber member 66 is connected to the display screen 64.
The back surface is connected to one battery stopper 81 and one buzzer 82, and the battery stopper 81 is the negative end of the power source. Whether the static electricity and the ground conductor 7 are disconnected in the circuit board 8 One control circuit for detection, one conductive plate 9 and a bottom plate of the upper lid 5, which come into contact with the skin of the human body, are pivotally connected to the arm bands 91 on both front and rear sides thereof. Is provided with a pivotal contact piece 92, four screw holes are provided at a position corresponding to the screw chain coupling column 65 of the watch internal component mounting base 6, and one arm band 91 is provided. The grounding wire 7 is one which is pivotally connected to the front and rear both sides of the conductive plate 9 by a tangential column and is to be worn by the user. The seat and the conductive plate 9 are connected to each other,
The plug on the other end of the grounding wire 7 is connected to one male / female connector and one clip. The above is provided, and members such as the display screen 64 and the circuit board 8 are connected to the watch internal component mounting base 6 with screws. Then, the buzzer 82 and the conductive plate 9 are attached to the upper cover 5, the arm bands 91 are pivotally connected to the pivoting pieces 92 on both sides of the conductive plate 9, and the plug at one end of the grounding wire 7 is attached to the upper cover 5. Wire insertion hole 5
3 and connect the clip at the other end to the ground or public grounding system, the control circuit forms a circuit with the ground or public grounding system to release static electricity of the human body to the ground and An armband type static eliminator characterized by detecting the presence or absence. 2. The control circuit is one time alarm output integrated circuit 83, which is connected to one quartz oscillator and a plurality of capacitors, is a time oscillating circuit, and is connected to two push buttons. , Which is used for time adjustment and provides a plurality of output terminals connected to the display screen 64 to display the time on the display screen 64, and one basic frequency oscillator 84, which does not have a ground condition and is When static electricity cannot be discharged to the ground, one oscillation frequency is generated and output through one Schmitt circuit, and one fault oscillator 85 is generated, generating two types of output frequencies and displaying them on the display screen 64. The one that outputs and the one alarm oscillator 86 that vibrates the basic frequency and outputs one information, and that generates one alarm sound on the buzzer at this frequency. When the worker inadvertently disconnects the grounding conductor 7 or a grounding failure occurs, the vibration frequency passes through the opposite phase output of one Schmitt circuit and fails. It is output to the oscillator 85 and the alarm oscillator 86, both of which work simultaneously, and the faulty oscillator 85 has no ground condition at the input terminal X,
The static electricity of the human body cannot be discharged into the earth. At this time, the fundamental frequency oscillator 84 generates one vibration frequency, the vibration frequency goes through the antiphase output of the Schmitt circuit, takes the antiphase working cycle, and is divided into two lines after the output, one of which is The fault oscillator 85 and the alarm oscillator 86 are the other one, both of which work simultaneously. In the fault oscillator 85, it is divided into two paths, one of which is connected to the display screen 64 through a phase shift by one Schmitt circuit, and the other input is connected to a relatively high frequency through an oscillator circuit. Are connected to the display screen 64, and these two frequencies cause the display screen 64 to become one F
The AIL failure information is output, and the alarm vibrator 86 oscillates this basic frequency signal to output one information, and this frequency is transmitted to one end of the buzzer 82, and the other end outputs the alarm for time and time. It is connected to the integrated circuit 83, and this frequency causes the buzzer 82 to generate one warning sound, and in combination with the output information of the fault oscillator 85, the worker can receive the fault occurrence information with his / her eyes and ears. The armband type static eliminator according to claim 1.