Clamp for measuring electrostatic discharge value

Abstract

The utility model relates to the technical field of electrostatic discharge value measurement fixtures, in particular to a fixture for electrostatic discharge value measurement, which comprises a fixture body, and an electrostatic gun head and a high-voltage gauge probe are respectively arranged on two sides of the fixture body. Arc-shaped clamping plates used for fixing an electrostatic gun head and a high-pressure gauge probe are symmetrically arranged on the two sides of the clamp body, limiting blocks are fixedly connected to the arc-shaped clamping plates, and limiting grooves are symmetrically formed in the outer wall of the electrostatic gun head and the outer wall of the high-pressure gauge probe. The two-way screws can control the two moving plates on the two sides to get close to each other, the moving plates can drive the limiting blocks to be inserted into the limiting grooves in the outer walls of the electrostatic gun head and the high-voltage meter probe, the electrostatic gun head and the high-voltage meter probe can be preliminarily clamped and fixed through the two arc-shaped clamping plates, and then through the arrangement of the limiting blocks and the limiting grooves, the electrostatic gun head and the high-voltage meter probe can be clamped and fixed. The fixing effect on the static gun head and the high-voltage meter probe is good, and the static gun head and the high-voltage meter probe are not prone to falling off from the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic discharge value measuring fixtures, in particular to a fixture used for measuring electrostatic discharge values. Background Art

[0002] Electrostatic discharge testing is an important assessment indicator in the electromagnetic compatibility test of automotive parts. It is to detect the anti-interference ability of parts to the electrostatic energy released by the human body. Among them, the static discharge voltage value is an important assessment indicator of this test.

[0003] A search revealed patent document CN211505631U, which discloses a fixture for measuring electrostatic discharge values. The fixture comprises a fixture body and a fixture, both made of insulating material. The fixture body has slots for an electrostatic gun tip and a high-voltage probe, respectively, at the left and right ends. The slots are interconnected and aligned with the high-voltage probe. The fixture body also features two fixing slots and two contact impedance measurement slots.

[0004] In the above-mentioned prior art, although the electrostatic discharge value of the electrostatic gun head can be measured by the high-voltage meter probe, and the high-voltage meter probe and the measuring electrostatic gun head are squeezed and fixed inside the fixture body by two fixing parts, which facilitates stable measurement of the high-voltage meter probe, but the high-voltage meter probe and the measuring electrostatic gun head are only squeezed and fixed by two fixing parts, and the fixing effect is poor. The high-voltage meter probe and the measuring electrostatic gun head are still easy to fall off from the fixture body. Therefore, a fixture for measuring electrostatic discharge value is now proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcoming in the prior art that the high voltage meter probe and the electrostatic measuring gun head are poorly fixed on the fixture body, and to propose a fixture for measuring electrostatic discharge values.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A fixture for measuring electrostatic discharge values, comprising a fixture body, an electrostatic gun head and a high-voltage meter probe being provided on both sides of the fixture body, arc-shaped clamping plates for fixing the electrostatic gun head and the high-voltage meter probe being symmetrically provided on both sides of the fixture body, limit blocks being fixedly connected to the arc-shaped clamping plates, and limit grooves being symmetrically provided on the outer walls of the electrostatic gun head and the high-voltage meter probe;

[0008] An adjustment mechanism is provided on one side of the clamp body, and the adjustment mechanism includes a servo motor, a belt, symmetrically arranged bidirectional screws, a movable plate and a pulley. The output end of the servo motor is connected to one of the bidirectional screws, the bidirectional screw is threadedly connected to the movable plate, the bidirectional screw is fixedly connected to the pulley, and the belt is arranged between the two pulleys.

[0009] Preferably, a fixing plate is symmetrically connected to the bidirectional screw, and the fixing plate is fixedly connected to one side of the clamp body. The top of one of the fixing plates is fixedly connected to a support plate, and the support plate is fixedly connected to the servo motor.

[0010] Preferably, a sliding groove is symmetrically opened on one side of the clamp body, and a slider is fixedly connected to one end of the movable plate, and the slider is slidably connected to the inner wall of the sliding groove.

[0011] Preferably, the limiting block is slidably connected to the inner wall of the limiting groove, and the arc-shaped clamping plate is in contact with the outer walls of the electrostatic gun head and the high-voltage meter probe.

[0012] Preferably, a socket is provided on the side wall of the fixture body, and the electrostatic gun head and the high-voltage meter probe are both inserted into the socket.

[0013] Preferably, a contact impedance measuring hole that passes through the inside of the jack is symmetrically opened on the top of the clamp body, and an impedance measuring instrument probe is inserted into the contact impedance measuring hole.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When this equipment is in use, the servo motor will control the simultaneous rotation of the two bidirectional screws through the cooperation of the belt and two pulleys. The two bidirectional screws will respectively control the two moving plates on both sides to approach each other. The moving plates will drive the limit blocks to be inserted into the limit grooves on the outer walls of the electrostatic gun head and the high-voltage meter probe. The electrostatic gun head and the high-voltage meter probe can be initially clamped and fixed through the two arc-shaped clamping plates. Then, through the setting of the limit blocks and the limit grooves, the electrostatic gun head and the high-voltage meter probe have a better fixing effect, and the electrostatic gun head and the high-voltage meter probe are not easy to fall off from the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external three-dimensional structure of a fixture for measuring electrostatic discharge values ​​proposed by the present invention;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the connection between the fixture body, electrostatic gun head, and limit groove;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the servo motor, belt, bidirectional screw, and limit block.

[0019] In the figure: 1. Fixture body; 2. Electrostatic gun head; 3. High-voltage meter probe; 4. Arc clamp; 5. Limit block; 6. Limit slot; 7. Servo motor; 8. Belt; 9. Bidirectional screw; 10. Moving plate; 11. Pulley; 12. Fixed plate; 13. Support plate; 14. Slide groove; 15. Slider; 16. Jack; 17. Contact impedance measurement hole; 18. Impedance meter probe. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 3 A fixture for measuring electrostatic discharge values ​​includes a fixture body 1, and an electrostatic gun head 2 and a high-voltage meter probe 3 are respectively provided on both sides of the fixture body 1. It should be noted that the electrostatic gun head 2, the high-voltage meter probe 3, and the impedance meter probe 18 are all existing technologies. The specific structure and principle are described in detail in the patent document proposed in the background technology: A fixture for measuring electrostatic discharge values ​​(publication number: CN211505631U), and will not be described again.

[0022] Arc-shaped clamps 4 for fixing the electrostatic gun head 2 and the high-voltage meter probe 3 are symmetrically arranged on both sides of the clamp body 1. The limit block 5 is slidably connected to the inner wall of the limit groove 6, and the arc-shaped clamps 4 are attached to the outer walls of the electrostatic gun head 2 and the high-voltage meter probe 3. It should be noted that when the two arc-shaped clamps 4 on one side of the fixed electrostatic gun head 2 and the two arc-shaped clamps 4 on one side of the high-voltage meter probe 3 are close to each other, the arc-shaped clamps 4 for fixing the electrostatic gun head 2 and the high-voltage meter probe 3 can be preliminarily clamped and fixed.

[0023] A limiting block 5 is fixedly connected to the arc-shaped splint 4, and limiting grooves 6 are symmetrically provided on the outer walls of the electrostatic gun head 2 and the high-voltage meter probe 3; it should be noted that when the two limiting blocks 5 on one side of the fixed electrostatic gun head 2 and the two limiting blocks 5 on one side of the high-voltage meter probe 3 are close to each other, they can be inserted into the corresponding limiting grooves 6, which can further complete the fixation of the electrostatic gun head 2 and the high-voltage meter probe 3, and the fixing effect is better.

[0024] It should be noted that the specific model and specifications of the servo motor 7 need to be selected based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not explained. The power supply and opening and closing control can be provided by external equipment.

[0025] An adjustment mechanism is provided on one side of the clamp body 1, and the adjustment mechanism includes a servo motor 7, a belt 8, symmetrically arranged bidirectional screws 9, a movable plate 10 and a pulley 11. The output end of the servo motor 7 is connected to one of the bidirectional screws 9, the bidirectional screw 9 is threadedly connected to the movable plate 10, the bidirectional screw 9 is fixedly connected to the pulley 11, and the belt 8 is arranged between the two pulleys 11. It should be noted that the movable plate 10 is arranged in an L shape.

[0026] Furthermore, a fixed plate 12 is symmetrically connected to the bidirectional screw 9 for rotation, and the fixed plate 12 is fixedly connected to one side of the clamp body 1. A support plate 13 is fixedly connected to the top of one of the fixed plates 12, and the support plate 13 is connected to the servo motor 7. It should be noted that the servo motor 7 will control the simultaneous rotation of the two bidirectional screws 9 through the cooperation of the belt 8 and the two pulleys 11.

[0027] Furthermore, a slide groove 14 is symmetrically opened on one side of the clamp body 1, and a slider 15 is fixedly connected to one end of the movable plate 10, and the slider 15 is slidably connected to the inner wall of the slide groove 14. It should be noted that through the setting of the slider 15 and the slide groove 14, the two movable plates 10 and the two arc-shaped clamping plates 4 can perform stable vertical linear motion.

[0028] Furthermore, a socket 16 is provided on the side wall of the fixture body 1, and the electrostatic gun head 2 and the high-voltage meter probe 3 are both inserted into the socket 16. It should be noted that when the electrostatic gun head 2 and the high-voltage meter probe 3 are inserted on both sides of the socket 16, one end of the electrostatic gun head 2 and the high-voltage meter probe 3 located inside the socket 16 is attached to each other, which is convenient for subsequent measurements.

[0029] Furthermore, a contact impedance measuring hole 17 that passes through the inside of the socket 16 is symmetrically opened on the top of the fixture body 1, and an impedance measuring instrument probe 18 is inserted into the inside of the contact impedance measuring hole 17. It should be noted that the fixture length is determined according to the actual length of the electrostatic gun head 2 and the high-voltage meter probe 3, so that both ends of the actual electrostatic gun head 2 and the high-voltage meter probe 3 can be completely in contact. Then, the impedance measuring instrument probe 18 is inserted into the upper contact impedance measuring hole 17 to confirm whether the connection is good and measure whether the contact impedance between the two is less than 5mΩ.

[0030] Working principle of this utility model:

[0031] The servo motor 7 will control the simultaneous rotation of the two bidirectional screws 9 through the cooperation of the belt 8 and the two pulleys 11. The two bidirectional screws 9 will respectively control the two movable plates 10 on both sides to approach each other. The movable plates 10 will drive the limit block 5 to be inserted into the limit groove 6 on the outer wall of the electrostatic gun head 2 and the high-voltage meter probe 3. The electrostatic gun head 2 and the high-voltage meter probe 3 can be initially clamped and fixed through the two arc-shaped clamping plates 4. Then, through the setting of the limit block 5 and the limit groove 6, the electrostatic gun head 2 and the high-voltage meter probe 3 are fixed better, and the electrostatic gun head 2 and the high-voltage meter probe 3 are not easy to fall off from the fixture.

[0032] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A fixture for measuring electrostatic discharge value, comprising a fixture body (1), characterized in that: An electrostatic gun head (2) and a high-voltage gauge probe (3) are respectively provided on both sides of the clamp body (1), and arc-shaped clamping plates (4) for fixing the electrostatic gun head (2) and the high-voltage gauge probe (3) are symmetrically provided on both sides of the clamp body (1), and a limiting block (5) is fixedly connected to the arc-shaped clamping plate (4), and the outer walls of the electrostatic gun head (2) and the high-voltage gauge probe (3) are symmetrically provided with limiting grooves (6); An adjustment mechanism is provided on one side of the clamp body (1), and the adjustment mechanism comprises a servo motor (7), a belt (8), symmetrically arranged bidirectional screws (9), a movable plate (10) and a pulley (11), wherein the output end of the servo motor (7) is connected to one of the bidirectional screws (9), the bidirectional screw (9) is threadedly connected to the movable plate (10), the bidirectional screw (9) is fixedly connected to the pulley (11), and the belt (8) is arranged between the two pulleys (11).

2. The fixture for measuring electrostatic discharge value according to claim 1, characterized in that: A fixed plate (12) is symmetrically connected to the bidirectional screw (9), and the fixed plate (12) is fixedly connected to one side of the clamp body (1). The top of one of the fixed plates (12) is fixedly connected to a support plate (13), and the support plate (13) is fixedly connected to the servo motor (7).

3. The fixture for measuring electrostatic discharge value according to claim 1, characterized in that: A sliding groove (14) is symmetrically provided on one side of the clamp body (1), and a slider (15) is fixedly connected to one end of the movable plate (10), and the slider (15) is slidably connected to the inner wall of the sliding groove (14).

4. The fixture for measuring electrostatic discharge value according to claim 1, characterized in that: The limiting block (5) is slidably connected to the inner wall of the limiting groove (6), and the arc-shaped clamping plate (4) is in contact with the outer walls of the electrostatic gun head (2) and the high-voltage meter probe (3).

5. The fixture for measuring electrostatic discharge value according to claim 1, characterized in that: A socket (16) is provided on the side wall of the clamp body (1), and the electrostatic gun head (2) and the high-voltage meter probe (3) are both inserted into the socket (16).

6. The fixture for measuring electrostatic discharge value according to claim 5, characterized in that: A contact impedance measurement hole (17) that is symmetrically opened on the top of the clamp body (1) and is communicated with the interior of the jack (16), and an impedance measuring instrument probe (18) is inserted into the interior of the contact impedance measurement hole (17).

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