Electronic connector contact impedance on-line testing device

Abstract

The utility model relates to electronic connector contact impedance on -line testing arrangement belongs to impedance testing arrangement technical field, including testing arrangement body, testing arrangement body output is equipped with the connecting wire, and the other end of connecting wire is equipped with the testing head, and testing arrangement body one side is equipped with the mounting cover, and the mounting cover inside is equipped with the storage subassembly that can store the connecting wire, and the storage subassembly includes storage shaft and connecting cover, and storage shaft rotatory mounting is in the mounting cover inside, and the limit hole is equipped on storage shaft, and the limit hole is connected with the connecting wire, and connecting cover installs in mounting cover one end, and the disc spring is connected on storage shaft, and the filter screen is clamped in testing arrangement body one side, the utility model discloses through storage subassembly, mounting cover, elastic clamping piece, realizes the automatic winding function of wire, avoids the wire material in disorder, and simultaneously can according to actual use demand flexible regulation wire length, significantly improves the applicability, can properly store the testing head when not using, effectively avoids the damage, prolongs its life.

Description

Technical Field

[0001] This utility model relates to the technical field of online testing devices for contact impedance of electronic connectors, and in particular to impedance testing devices. Background Technology

[0002] In the field of electronic equipment manufacturing and maintenance, online testing of electronic connector contact impedance is undoubtedly a crucial step in ensuring the stable operation of circuit systems and the quality of signal transmission. However, existing online testing devices for electronic connector contact impedance have revealed several problems that urgently need to be addressed in practical applications. First, the connecting wires used in these devices generally lack a scientifically sound and reasonable storage structure design, making them prone to tangling and knotting during frequent use. This not only significantly reduces operator efficiency but, more seriously, can lead to internal wire breakage due to repeated bending, directly affecting the accuracy and reliability of the test results. Second, most testing devices fail to adequately consider the needs of different testing scenarios in their design, making it difficult to flexibly adjust the length of the connecting wires. Specifically, when the electronic connector under test is relatively far away, an excessively short wire cannot meet the testing requirements, while when the location is close, an excessively long wire becomes cumbersome, increasing operational difficulty and potentially causing safety hazards due to the tangled wires. These problems undoubtedly greatly limit the applicability of the testing devices and affect their effectiveness in practical work. Utility Model Content

[0003] To overcome the technical defects of the existing technology, this utility model provides an online testing device for the contact impedance of electronic connectors, which can realize the automatic storage of connecting wires and flexibly adjust the length of connecting wires according to usage requirements.

[0004] The technical solution adopted by this utility model is as follows: it includes a test device body, the output end of the test device body is provided with a connecting wire, the other end of the connecting wire is provided with a test head, a mounting cover is provided on one side of the test device body, a storage component that can store the connecting wire is provided inside the mounting cover, and a filter screen is snapped onto one side of the test device body.

[0005] Preferably, in order to store the connecting wire, the storage assembly includes a storage shaft and a connecting cover. The storage shaft is rotatably mounted inside the mounting cover, and the storage shaft is provided with a limiting hole, which is connected to the connecting wire. The connecting cover is installed at one end of the mounting cover. A coil spring is connected to the storage shaft, and the other end of the coil spring is connected to the mounting cover. A baffle is provided on the storage shaft, and the baffle is located on one side of the coil spring.

[0006] Preferably, in order to facilitate the fixing of the storage shaft, the connecting cover is provided with a sliding groove, and a bidirectional threaded rod is rotatably installed in the sliding groove. A clamping plate is threadedly connected to the bidirectional threaded rod, and the clamping plate is located on both sides of the bidirectional threaded rod. The clamping plate is slidably connected to the sliding groove, and a handwheel is provided at the other end of the bidirectional threaded rod.

[0007] Preferably, to facilitate the installation of the filter screen, the test device body has a snap-fit ​​groove, through which the filter screen is snapped into the test device body.

[0008] Preferably, in order to facilitate heat dissipation, the upper surface of the test device body is provided with heat dissipation holes arranged in an array.

[0009] Preferably, in order to facilitate the snapping of the test head, the mounting cover is provided with an elastic snapping block, and the test head can snap into the elastic snapping block.

[0010] Preferably, a cover plate is rotatably mounted on the mounting cover to facilitate flexible placement and removal of the test head.

[0011] Preferably, in order to have a certain gap between the main body of the testing device and the tabletop, the lower surface of the main body of the testing device is provided with support feet.

[0012] The beneficial effects of this utility model are:

[0013] The device features a storage component, mounting cover, and flexible snap-fit ​​block to automatically retract the connecting wires, preventing tangled wires. It also allows for flexible adjustment of the connecting wire length according to usage needs, improving applicability. Furthermore, the test head can be stored away when not in use to prevent damage and extend its lifespan. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the present invention from the left side view.

[0015] Figure 2 This is a structural schematic diagram of the present invention from the right side view.

[0016] Figure 3 This is a partial structural diagram of the testing device body of this utility model.

[0017] Figure 4 This is a cross-sectional view of the storage component of this utility model.

[0018] Figure 5 for Figure 4 Schematic diagram at point A.

[0019] Explanation of reference numerals in the attached drawings: 1. Test device body; 2. Connecting wire; 3. Test head; 4. Mounting cover; 5. Storage assembly; 501. Storage shaft; 502. Connecting cover; 503. Coil spring; 504. Baffle; 505. Slide groove; 506. Bidirectional threaded rod; 507. Clamping plate; 508. Handwheel; 509. Limiting hole; 6. Filter screen; 7. Heat dissipation hole; 8. Elastic snap-fit ​​block; 9. Cover plate; 10. Support foot; 11. Snap-fit ​​groove. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] like Figures 1-5 As shown, this embodiment provides an online testing device for the contact impedance of electronic connectors, including a testing device body 1. The testing device body 1 is an ECR-2024 intelligent online testing device for the contact impedance of electronic connectors. Its working principle is as follows: the signal generator built into the testing device body 1 generates a small-amplitude AC signal of a specific frequency, such as 1kHz-1MHz, typically in the mV range. This signal is transmitted to the test head 3 via the output terminal and the connecting wire 2. The front end of the test head 3 adopts a high-precision elastic contact design, such as beryllium copper alloy material, which generates a small pressure when contacting the contact terminal of the electronic connector, ensuring full contact between the contact and the terminal without oxide layer interference. After the signal is transmitted to the electronic connector, part of the current forms a loop through the contact interface. The sampling circuit inside the testing device body 1 synchronously collects the voltage signal V1 at the end of the test head 3 and the current signal I at the return end. 1. Based on Ohm's law R=V / I, the microprocessor calculates the impedance value Z=V1 / I1 of the contact interface in real time. During the test, the device synchronously monitors environmental parameters such as temperature and humidity, as well as its own status such as circuit drift and noise. The built-in algorithm performs temperature compensation and noise filtering on the impedance value to ensure data accuracy. The output end of the test device body 1 is equipped with a connecting wire 2, and the other end of the connecting wire 2 is equipped with a test head 3. The test device body 1 is equipped with a mounting cover 4 on one side. The mounting cover 4 has a storage component 5 inside that can store the connecting wire 2, realizing automatic winding of the connecting wire 2 and avoiding wire mess. At the same time, the length of the connecting wire 2 can be flexibly adjusted according to the usage requirements, improving applicability. A filter screen 6 is snapped on one side of the test device body 1 to prevent dust from entering the device and avoid dust affecting the test accuracy or damaging the internal components.

[0022] As a technical optimization solution of this utility model, specifically as follows: Figure 4As shown, the storage assembly 5 includes a storage shaft 501 and a connecting cover 502. The storage shaft 501 is rotatably mounted inside the mounting cover 4, and a limiting hole 509 is provided on the storage shaft 501. The limiting hole 509 is connected to the connecting wire 2. The connecting cover 502 is installed at one end of the mounting cover 4. A coil spring 503 is connected to the storage shaft 501, and the other end of the coil spring 503 is connected to the mounting cover 4. A baffle 504 is provided on the storage shaft 501, and the baffle 504 is located on one side of the coil spring 503. A sliding groove 505 is provided inside the connecting cover 502. A bidirectional threaded rod 506 is rotatably mounted on the sliding groove 505. A clamping plate 507 is threadedly connected to the bidirectional threaded rod 506. The clamping plate 507 is located on both sides of the bidirectional threaded rod 506 and is slidably connected to the sliding groove 505. A handwheel 508 is provided at the other end of the threaded rod 506. When the connecting wire 2 is stretched, the coil spring 503 on the storage shaft 501 is subjected to force and twists to store power. The limiting hole 509 can effectively prevent the connecting wire 2 from falling off the storage shaft 501. When stretched to a suitable length, the handwheel 508 is turned to drive the bidirectional threaded rod 506 to rotate, so that the clamping plates 507 on both sides slide towards each other along the slide groove 505, clamping and fixing the storage shaft 501 to prevent the connecting wire 2 from retracting and affecting the test operation. After the test, the handwheel 508 is turned again to release the clamping plates 507. Under the action of the elastic restoring force of the coil spring 503, the storage shaft 501 automatically rotates to retract the connecting wire 2 into the mounting cover 4, and the test head 3 is re-clamped onto the elastic clamping block 8. The cover plate 9 is closed to complete the storage.

[0023] As a technical optimization solution of this utility model, specifically as follows: Figure 2 As shown, the test device body 1 has a snap-fit ​​groove 11, and the filter screen 6 is snapped into the test device body 1 through the snap-fit ​​groove 11. The upper surface of the test device body 1 has an array of heat dissipation holes 7 for online contact impedance testing. At the same time, the array of heat dissipation holes 7 on the upper surface of the body can dissipate the heat generated by the internal operation in a timely manner. Together with the filter screen 6 snapped into the snap-fit ​​groove 11, it can not only ensure the heat dissipation effect, but also prevent dust from entering the device, so as to avoid dust affecting the test accuracy or damaging the internal components. The mounting cover 4 has an elastic snap-fit ​​block 8 inside, and the test head 3 can be snapped into the elastic snap-fit ​​block 8. A cover plate 9 is rotatably installed on the mounting cover 4 to re-snap the test head 3 onto the elastic snap-fit ​​block 8. Closing the cover plate 9 completes the storage, which can protect the test head 3 and improve the service life of the test device. The lower surface of the test device body 1 has a support foot 10.

[0024] In use, first rotate the cover plate 9 to open the mounting cover 4, remove the test head 3 from the elastic snap-fit ​​block 8, and stretch the connecting wire 2 according to the position of the electronic connector to be tested. At this time, the coil spring 503 on the storage shaft 501 is subjected to force and twists to store force, and the limiting hole can effectively prevent the connecting wire 2 from falling off the storage shaft 501. After stretching to a suitable length, rotate the handwheel 508 to drive the bidirectional threaded rod 506 to rotate, so that the two clamping plates 507 on both sides slide towards each other along the slide groove 505, clamping and fixing the storage shaft 501 to prevent the connecting wire 2 from retracting and affecting the test operation. During the test, the test device body 1 passes through the test head. 3. Contact with the electronic connector to perform online contact impedance testing. At the same time, the heat dissipation holes 7 arranged in an array on the upper surface of the body can dissipate the heat generated during internal operation in a timely manner. Together with the filter screen 6 snapped into the snap-fit ​​slot 11, it can not only ensure heat dissipation effect, but also prevent dust from entering the device and avoid dust affecting test accuracy or damaging internal components. After the test, turn the handwheel 508 again to release the clamping plate 507. Under the elastic restoring force of the disc spring 503, the storage shaft 501 automatically rotates to retract the connecting wire 2 into the mounting cover 4, re-snap the test head 3 onto the elastic snap-fit ​​block 8, and close the cover 9 to complete the storage.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications may be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. An online testing device for contact impedance of electronic connectors, comprising a testing device body (1), characterized in that: The output end of the test device body (1) is provided with a connecting wire (2), and the other end of the connecting wire (2) is provided with a test head (3). A mounting cover (4) is provided on one side of the test device body (1). A storage component (5) for storing the connecting wire (2) is provided inside the mounting cover (4). A filter screen (6) is snapped onto one side of the test device body (1). The storage component (5) includes a storage shaft (501) and a connecting cover (502). The storage shaft (501) is rotatably installed inside the mounting cover (4), and a limiting hole (509) is provided on the storage shaft (501). The limiting hole (509) is connected to the connecting wire (2). The connecting cover (502) is installed on one end of the mounting cover (4). A coil spring (503) is connected to the storage shaft (501). The other end of the coil spring (503) is connected to the mounting cover (4). A baffle (504) is provided on the storage shaft (501). The baffle (504) is located on one side of the coil spring (503). A sliding groove (505) is provided inside the connecting cover (502). A bidirectional threaded rod (506) is rotatably installed on the sliding groove (505). A clamping plate (507) is threadedly connected to the bidirectional threaded rod (506). The clamping plate (507) is located on both sides of the bidirectional threaded rod (506). The clamping plate (507) is slidably connected to the sliding groove (505). A handwheel (508) is provided at the other end of the bidirectional threaded rod (506). An elastic snap-fit ​​block (8) is provided inside the mounting cover (4). The test head (3) can snap into the elastic snap-fit ​​block (8).

2. The online testing device for contact impedance of electronic connectors according to claim 1, characterized in that: The test device body (1) has a snap-fit ​​groove (11), and the filter screen (6) is snapped into the test device body (1) through the snap-fit ​​groove (11).

3. The online testing device for contact impedance of electronic connectors according to claim 1, characterized in that: The upper surface of the test device body (1) is provided with heat dissipation holes (7) arranged in an array.

4. The online testing device for contact impedance of electronic connectors according to claim 1, characterized in that: A cover plate (9) is rotatably mounted on the mounting cover (4).

5. The online testing device for contact impedance of electronic connectors according to claim 1, characterized in that: The test device body (1) has a support foot (10) on its lower surface.

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