High-impedance contact type static tester

Abstract

The utility model discloses a high impedance contact type static electricity tester, the static electricity tester comprises an instrument body, a connector female end arranged at one side of the instrument body and a connector male end matched with the connector female end, the connector female end comprises a female end shell, the connector male end comprises a male end shell sleeved outside the female end shell, and the connector male end comprises a male end shell sleeved outside the male end shell. Clamping pieces are symmetrically arranged on the peripheral wall of the female end shell, clamping grooves for the clamping pieces to be inserted are formed in the male end shell, the section of each clamping groove is in an L shape, and a limiting assembly used for limiting rotation of the male end shell is arranged on the side, located at the female end of the connector, of the instrument body. Therefore, the connection stability of the whole connector is ensured, and the test precision in the use process is ensured.

Description

Technical Field

[0001] The utility model belongs to the field of electrostatic testers, and in particular relates to a high-impedance contact type electrostatic tester. Background Art

[0002] ESD testers are available in contact and non-high-impedance contact types. They can measure up to + / -2kV. The housing is made of anti-static material and has a grounding clip to ensure reliable measurement results.

[0003] Most existing electrostatic testers use BNC connectors to electrically connect to external devices or probes, and BNC connectors are mostly connected by plug-in and select. However, since the wiring harness of the BNC connector itself is relatively rigid, when in use, the probe needs to move continuously, which can easily cause the connection line to rotate in reverse, affecting the connection effect and thus the test accuracy. Therefore, a new solution is needed to solve the above problems. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-impedance contact electrostatic tester, which is intended to solve the problem of unstable connection of existing connectors.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a high-impedance contact electrostatic tester, including an instrument body, a female connector end arranged on one side of the instrument body, and a male connector end cooperating with the female connector end, the female connector end including a female end shell, the male connector end including a male end shell sleeved on the outside of the female end shell, the outer peripheral wall of the female end shell is symmetrically provided with clips, the male end shell is provided with a clip groove for inserting the clip, the cross-section of the clip groove is L-shaped, and the instrument body is provided with a limiting component for limiting the rotation of the male end shell on one side of the female connector end.

[0008] Preferably, the limiting component includes a plurality of elastic members arranged on one side of the instrument body and distributed around the female end array of the connector, an embedding portion is provided at one end of the elastic member away from the instrument body, an embedding groove for embedding the embedding portion is provided on the outer peripheral wall of the male end shell, and the elastic member has elastic deformation potential energy for squeezing toward the outer peripheral wall of the female end shell.

[0009] Furthermore, the distance from the embedding groove to the wiring harness is smaller than the distance from the clamping groove to the wiring harness.

[0010] Furthermore, a slide groove is provided on one side of the instrument body, the female end shell is slidably connected to the inner wall of the slide groove, and a plurality of reset parts are provided on the inner bottom wall of the slide groove, and the reset parts have elastic deformation potential energy to drive the female end shell to move toward the outside of the slide groove.

[0011] Furthermore, a slider is fixedly connected to the bottom of the female end shell, the diameter of the slider is larger than the diameter of the female end shell, the slider is inserted into the slide groove and slides with the inner wall of the slide groove, and a limiting sleeve is fixedly connected to one side of the instrument body, and the limiting sleeve is provided with a through hole for the female end shell to pass through.

[0012] Furthermore, a guide surface is provided on the side of the embedding portion facing away from the instrument body, and a limiting surface is provided on the side of the embedding portion facing the instrument body, which is in contact with the bottom wall of the embedding groove.

[0013] Beneficial effects

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

[0015] By setting up and utilizing a limiting component, when the clamping part enters the clamping groove and rotates through the male end shell to the bottom, the rotation of the male end shell is restricted, thereby restricting the male end shell from separating from the female end shell, avoiding loosening, ensuring the connection stability of the entire connector male end and connector female end, and ensuring the test accuracy during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 It is an exploded view of the present utility model.

[0019] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0020] The markings in the accompanying drawings are: 1. Instrument body; 11. Elastic part; 12. Embedded part; 121. Guide surface; 2. Male end shell; 21. Snap-fit ​​groove; 211. Recess; 22. Embedded groove; 3. Female end shell; 31. Snap-fit ​​part; 32. Slider; 4. Slide groove; 41. Reset part; 5. Limit sleeve. DETAILED DESCRIPTION

[0021] This specific embodiment is a high impedance contact type electrostatic tester, such as Figures 1-4As shown, it includes an instrument body 1, a female connector end arranged on the top of the instrument body 1, and a male connector end that cooperates with the female connector end. The female connector end includes a female connector fixed on the top of the instrument body 1 and a female shell 3 sleeved on the outer peripheral wall of the female connector. The male connector end includes a male connector fixedly connected to one end of the wiring harness and cooperating with the female connector, and a male shell 2 rotatably connected to the outer peripheral wall of the male connector. Snap-fitting parts 31 are symmetrically provided on the outer peripheral wall of the female shell 3. A snap-fitting groove 21 for inserting the snap-fitting part 31 is provided on the male shell 2. The cross-section of the snap-fitting groove 21 is L-shaped. A limiting component for limiting the rotation of the male shell 2 is provided on one side of the instrument body 1 located at the female end of the connector.

[0022] The instrument body 1 adopts less than 1.0x 10 -13 Farad input capacitance and greater than 1.0x10 14 Ohm input impedance. The size of the input capacitance has a significant impact on signal transmission and measurement. Smaller input capacitance can reduce signal attenuation and distortion during transmission, improving signal fidelity and measurement accuracy. Input impedance is the resistance of the instrument input to the signal current. Its size directly affects the signal transmission and amplification effect in the instrument. Higher input impedance can reduce current shunting between the signal source and the instrument, thereby reducing signal loss and improving signal transmission efficiency. In addition, high input impedance can reduce the instrument's loading effect on the signal source, protecting the signal source from damage, ensuring that the instrument can accurately and stably receive and process weak signals.

[0023] The limiting component is used to limit the rotation of the male end shell 2 when the clamping part 31 enters the clamping groove 21 and rotates to the bottom through the male end shell 2, thereby limiting the male end shell 2 from separating from the female end shell 3, avoiding loosening, ensuring the connection stability of the entire connector male end and the connector female end, and ensuring the test accuracy during use.

[0024] The limiting component includes three elastic members 11 arranged on the top of the instrument body 1 and distributed around the female end of the connector array. The elastic members 11 are made of elastic material such as plastic or elastic metal. One end of the elastic member 11 is fixed to the top of the instrument body 1, and the other end of the elastic member 11 is integrally formed with an embedding portion 12. An embedding groove 22 for embedding the embedding portion 12 is provided on the outer peripheral wall of the male end shell 2. The elastic member 11 has elastic deformation potential energy for squeezing toward the outer peripheral wall of the female end shell 3. When the male end of the connector is plugged in, the elastic member 11 can be inserted into the embedding groove 22 by utilizing its own elasticity, thereby preventing the male end shell 2 from rotating. The distance from the embedding groove 22 to the wiring harness is smaller than the distance from the clamping groove 21 to the wiring harness, so that the embedding groove 22 and the clamping groove 21 are kept away from each other. When the male end shell 2 rotates, the embedding portion 12 will not enter the clamping groove 21, making it more convenient to use.

[0025] A guide surface 121 is provided on the side of the embedded portion 12 facing away from the instrument body 1, and a limiting surface is provided on the side of the embedded portion 12 facing the instrument body 1, which is in contact with the inner bottom wall of the embedding groove 22. By providing the guide surface 121 and utilizing the guiding effect of the guide surface 121, the cooperation between the male end shell 2 and the female end shell 3 is made more convenient, and the provision of the limiting surface further ensures the limiting effect.

[0026] A slide groove 4 is provided on the top of the instrument body 1, and a slider 32 is fixedly connected to the bottom of the female end shell 3. The diameter of the slider 32 is larger than the diameter of the female end shell 3. The slider 32 is inserted into the slide groove 4 and slides with the inner circumferential wall of the slide groove 4. A limiting sleeve 5 is fixedly connected to one side of the instrument body 1. The limiting sleeve 5 is hollow and connected to the slide groove 4. A through hole is provided on the top of the limiting sleeve 5 for the female end shell 3 to pass through, so that the aperture of the through hole is smaller than the diameter of the slide groove 4, thereby limiting the movement trajectory of the slider 32 and preventing the slider 32 from axially disengaging from the limiting sleeve 5 and thus disengaging from the instrument body 1; a plurality of reset members 41 are fixedly connected to the inner bottom wall of the slide groove 4, and the top of the reset member 41 is fixed to the bottom of the slider 32. The reset member 41 can be an elastic sheet, or can be a member such as Figure 4 The spring shown makes the reset member 41 elastic, and the elasticity of the reset member 41 drives the female end shell 3 to move toward the outside of the slide groove 4, and prevents the slider 32 from rotating, at least the female end shell 3 cannot rotate; a recess 211 is provided on the inner side wall of the bottom end of the snap-fit ​​groove 21. When the reset member 41 is reset, the snap-fit ​​member 31 can fall into the recess 211, and can also limit the rotation of the male end shell 2.

[0027] Working principle: Insert the male end of the connector into the female end of the connector, and the male end shell 2 is close to the female end shell 3. At this time, the male end shell 2 touches the top guide surface 121 of the elastic member 11, so that the elastic member 11 is deformed by the external force, and the embedded parts 12 at the top of the elastic members 11 move away from each other. When they move closer, the clamping member 31 is inserted into the clamping groove 21. When the male end shell 2 is completely set in the female end shell 3, the male end shell 2 is rotated so that the clamping member 31 enters the bottom end of the clamping groove 21, and the embedded part 12 corresponds to the clamping groove 22. The elastic member 11 is not affected by external forces and moves toward the female housing 3 by its own elasticity, so that the embedded portion 12 is inserted into the embedded groove 22. The elasticity of the reset member 41 is used to make the limiting surface of the embedded portion 12 contact the inner bottom wall of the embedded groove 22, and the clamping member 31 falls into the recess 211 of the clamping groove 21, thereby completing the restriction of the male housing 2, thereby preventing the male housing 2 from being separated from the female housing 3 and preventing loosening, thereby ensuring the connection stability of the entire connector male end and connector female end, and ensuring the test accuracy during use;

[0028] When the male end of the connector needs to be separated from the female end of the connector, the entire wiring harness is pressed, so that the male end shell 2 is pressed, and the clamping piece 31 contacts the inner top wall of the clamping groove 21. Continue to press, so that the female end shell 3 is pressed downward, and the slider 32 moves toward the slide groove 4. The reset piece 41 is deformed by the external force, and the guide surface 121 of the embedded part 12 contacts the inner top wall of the embedded groove 22, causing the elastic part 11 to be deformed by the external force until the embedded part 12 is separated from the embedded groove 22. At this time, the male end shell 2 can be easily rotated, and the embedded part 12 is away from the embedded groove 22. Then, the male end of the connector can be easily separated from the female end of the connector, making disassembly more convenient and quick, and can correspond to different probes.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A high-impedance contact electrostatic tester, characterized in that: The invention comprises an instrument body (1), a female connector end arranged on one side of the instrument body (1), and a male connector end matched with the female connector end, wherein the female connector end comprises a female end shell (3), and the male connector end comprises a male end shell (2) sleeved on the outside of the female end shell (3), a clamping piece (31) is symmetrically arranged on the outer peripheral wall of the female end shell (3), and a clamping groove (21) for inserting the clamping piece (31) is provided on the male end shell (2), and the cross section of the clamping groove (21) is L-shaped. A limiting component for limiting the rotation of the male end shell (2) is provided on one side of the instrument body (1) located at the female connector end.

2. A high-impedance contact electrostatic tester according to claim 1, characterized in that: The limiting component comprises a plurality of elastic members (11) arranged on one side of the instrument body (1) and distributed around the female end of the connector array, an embedding portion (12) is provided at one end of the elastic member (11) away from the instrument body (1), an embedding groove (22) for embedding the embedding portion (12) is provided on the outer peripheral wall of the male end shell (2), and the elastic member (11) has elastic deformation potential energy for squeezing toward the outer peripheral wall of the female end shell (3).

3. A high-impedance contact electrostatic tester according to claim 2, characterized in that: The distance between the embedding groove (22) and the wiring harness is smaller than the distance between the clamping groove (21) and the wiring harness.

4. A high-impedance contact electrostatic tester according to claim 2, characterized in that: A slide groove (4) is provided on one side of the instrument body (1), the female end shell (3) is slidably connected to the inner wall of the slide groove (4), and a plurality of reset members (41) are provided on the inner bottom wall of the slide groove (4). The reset members (41) have elastic deformation potential energy for driving the female end shell (3) to move toward the outside of the slide groove (4).

5. A high-impedance contact electrostatic tester according to claim 4, characterized in that: A slider (32) is fixedly connected to the bottom of the female end shell (3), the diameter of the slider (32) is larger than the diameter of the female end shell (3), and the slider (32) is inserted into the slide groove (4) and slidably cooperates with the inner peripheral wall of the slide groove (4). A limiting sleeve (5) is fixedly connected to one side of the instrument body (1), and the limiting sleeve (5) is provided with a through hole for the female end shell (3) to pass through.

6. A high-impedance contact electrostatic tester according to claim 5, characterized in that: The side of the embedded portion (12) facing away from the instrument body (1) is provided with a guide surface (121), and the side of the embedded portion (12) facing the instrument body (1) is provided with a limiting surface that fits with the inner bottom wall of the embedding groove (22).

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