A high impedance performance testing device for multilayer PCB

Abstract

The utility model discloses a kind of high impedance performance testing devices of multilayer PCB, including lower shell, the upper end of the lower shell is movably connected with support, the lower shell is opened with movable slot, the movable block is movably connected in the movable slot, the test pen is movably connected with the penetration in the support, the motor is fixedly connected on the support, the side surface of the motor is movably connected with gear wheel, the side surface of the test pen is fixedly connected with gear table, the side surface of the support is fixedly connected with data line, the side surface of the lower shell is erected with the movable resistance tester of movable connection, the second sliding slot of symmetry is opened in the movable slot, the side surface of the movable block is fixedly connected with the slider of symmetry, displacement shaft is movably connected with the penetration in the movable slot, threaded strip is fixedly connected on the displacement shaft. Through the above structure, it is convenient to adapt to different specifications PCB, make test operation efficient and accurate, can stable transmission test data, ensure that the whole high impedance performance testing process is reliable.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a high impedance performance testing device for multilayer PCB boards. Background Technology

[0002] High impedance performance is one of the key electrical characteristics of multilayer PCBs, directly affecting the stability and integrity of signal transmission and the overall performance of the system. If the high impedance performance of the PCB is poor, problems such as signal attenuation, distortion, and reflection are likely to occur during high-frequency signal transmission, seriously affecting the normal operation of electronic equipment.

[0003] Traditional testing processes often require manual operation, testing each test point on the PCB board one by one. This is not only time-consuming and labor-intensive, but also prone to inconsistent results due to human error. Furthermore, traditional testing equipment has poor compatibility with multilayer PCBs of different specifications and sizes, lacking sufficient flexibility and adaptability to meet diverse product requirements and making it difficult to quickly switch between testing different types of PCBs. Existing patents, such as CN221224921U, disclose a PCB testing device that improves the testing method and efficiency to some extent. However, it still has limitations in practical applications. When testing PCBs of different specifications, the position adjustment of the test probes is not precise enough, making it difficult to ensure accurate contact between the probes and test points with different layouts, resulting in insufficient reliability of the test results. Moreover, it lacks multi-parameter collaborative monitoring in high-impedance performance testing, failing to comprehensively and in real-time reflect the high-impedance performance status of the PCB board, and thus failing to meet the modern high-precision and diverse PCB testing needs. Utility Model Content

[0004] The purpose of this invention is to provide a high impedance performance testing device for multilayer PCBs, which is easy to adapt to PCBs of different specifications, makes the testing operation efficient and accurate, can stably transmit test data, and ensures the reliability of the entire high impedance performance testing process.

[0005] To achieve the above objectives, a high impedance performance testing device for multilayer PCBs is provided, comprising a lower shell, a bracket movably connected to the upper end of the lower shell, a movable groove provided on the lower shell, and a movable block movably connected within the movable groove.

[0006] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a test pen is movably connected through the bracket, and a motor is fixedly connected to the bracket.

[0007] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a rotating gear is movably connected to the side of the motor, and a gear platform is fixedly connected to the side of the test pen, with the rotating gear movably connected to the gear platform.

[0008] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a data cable is fixedly connected to the side of the bracket, and an impedance tester is movably connected to the side of the lower shell, with the other end of the data cable fixedly connected to the impedance tester.

[0009] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a symmetrical second slide groove is provided in the movable slot, a symmetrical slider is fixedly connected to the side of the movable block, the slider is movably connected to the second slide groove, and a rotating bushing is movably connected through the movable block.

[0010] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a displacement shaft is movably connected through the movable slot, a threaded strip is fixedly connected to the displacement shaft, and a threaded groove is opened inside the rotating bushing, the threaded groove being movably connected to the threaded strip.

[0011] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a rotating hole is provided inside the lower shell, one end of the displacement shaft is movably connected to the rotating hole, the other end of the displacement shaft is fixedly connected to a turntable, and a movable handle is movably connected to the side of the turntable.

[0012] According to the aforementioned high impedance performance testing device for multilayer PCB boards, a symmetrical first sliding groove is provided on the side of the lower shell, the lower end of the bracket is movably connected to the first sliding groove, the upper end of the movable block is fixedly connected to a first friction plate, and the upper end of the lower shell is fixedly connected to a second friction plate.

[0013] Beneficial effects:

[0014] 1. The motor-driven rotating gear, in conjunction with the gear table, can precisely control the movement of the test pen, ensuring accurate contact with the high impedance performance test points on multi-layer PCBs. At the same time, the movable block can be flexibly adjusted in position within the movable slot via components such as a turntable and displacement shaft, making it easy to adapt to different PCB specifications and ensuring efficient and accurate testing operations.

[0015] 2. The bracket and lower shell are movably connected via the first sliding groove. The movable block and movable groove cooperate via the slider and the second sliding groove to ensure the stability of the device structure. The first and second friction plates prevent the PCB board from shifting during the test. The data cable connects to the impedance tester, ensuring stable transmission of test data and guaranteeing the reliability of the entire high impedance performance test process.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a front view of a high impedance performance testing device for multilayer PCB boards proposed in this utility model;

[0019] Figure 2 This is a rear view of a high impedance performance testing device for multilayer PCB boards proposed in this utility model.

[0020] Figure 3 This is a cross-sectional view of a high impedance performance testing device for multilayer PCB boards proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of a measuring device for a high impedance performance testing apparatus for multilayer PCB boards proposed in this utility model.

[0022] Legend:

[0023] 1. Lower shell; 2. Movable groove; 3. Bracket; 4. Movable block; 5. Displacement shaft; 6. Threaded strip; 7. First friction plate; 8. Second friction plate; 9. Test pen; 10. Motor; 11. Data cable; 12. Resistance tester; 13. Turntable; 14. Movable handle; 15. Slider; 16. Rotating gear; 17. Gear platform; 18. First slide groove; 19. Rotating hole; 20. Rotating bushing; 21. Threaded groove; 22. Second slide groove. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figures 1-4 This utility model provides a high impedance performance testing device for multilayer PCB boards, which includes a lower shell 1, a bracket 3 movably connected to the upper end of the lower shell 1, a movable groove 2 on the lower shell 1, and a movable block 4 movably connected in the movable groove 2 to accommodate the installation and movement of the movable block 4.

[0026] Specifically: a test pen 9 is movably connected through the bracket 3, and a motor 10 is fixedly connected to the bracket 3.

[0027] Specifically: a rotating gear 16 is movably connected to the side of the motor 10, and a gear platform 17 is fixedly connected to the side of the test pen 9. The rotating gear 16 is movably connected to the gear platform 17.

[0028] Specifically: A data cable 11 is fixedly connected to the side of the bracket 3, and a resistance tester 12 is movably connected to the side of the lower shell 1. The other end of the data cable 11 is fixedly connected to the resistance tester 12 for analysis and processing.

[0029] Specifically: a symmetrical second slide groove 22 is provided in the movable groove 2, and a symmetrical slider 15 is fixedly connected to the side of the movable block 4. The slider 15 is movably connected to the second slide groove 22, and a rotating bushing 20 is movably connected through the movable block 4.

[0030] Specifically: a displacement shaft 5 is movably connected through the movable slot 2, and a threaded strip 6 is fixedly connected to the displacement shaft 5. A threaded groove 21 is opened in the rotating sleeve 20, and the threaded groove 21 is movably connected to the threaded strip 6, which can adapt to the testing needs of multi-layer PCB boards of different sizes.

[0031] Specifically: a rotating hole 19 is provided inside the lower shell 1, one end of the displacement shaft 5 is movably connected to the rotating hole 19, the other end of the displacement shaft 5 is fixedly connected to the turntable 13, and a movable handle 14 is movably connected to the side of the turntable 13.

[0032] Specifically: The lower shell 1 has a symmetrical first sliding groove 18 on its side, the lower end of the bracket 3 is movably connected to the first sliding groove 18, the upper end of the movable block 4 is fixedly connected to the first friction plate 7, and the upper end of the lower shell 1 is fixedly connected to the second friction plate 8 to prevent displacement during the test and ensure the accuracy of the test results.

[0033] Working principle:

[0034] Based on the dimensions of the multilayer PCB board to be tested, the operator rotates the movable handle 14, which drives the turntable 13 connected to its pin to rotate, thereby causing the displacement shaft 5, which is connected to the turntable 13 by a key, to rotate. The threaded strip 6 on the surface of the displacement shaft 5 engages with the threaded groove 21 of the rotating bushing 20 inside the movable block 4. Since the rotating bushing 20 is fixed inside the movable block 4, when the displacement shaft 5 rotates, the movable block 4, with the help of the sliding engagement between the side slider 15 and the second sliding groove 22 inside the movable groove 2, smoothly moves within the movable groove 2, adjusting to a position suitable for the PCB board size. At the same time, the lower end of the bracket 3 is movably connected to the first sliding groove 18 on the side of the lower shell 1 via a slider, allowing it to move up and down as needed to adjust the height of the test pen 9. The PCB board is placed between the first friction plate 7 at the upper end of the movable block 4 and the second friction plate 8 at the upper end of the lower shell 1. The friction generated by the rubber friction plates stabilizes the PCB board and prevents displacement during testing. During the test run, motor 10 is started, and the output shaft of motor 10 drives the rotating gear 16 connected to it to rotate. The rotating gear 16 meshes with the gear platform 17 welded to the side of the test pen 9, precisely controlling the movement of the test pen 9 so that the rhenium-tungsten alloy tip of the test pen 9 accurately contacts the test point on the PCB board. The test pen 9 collects signals, which are transmitted through the shielded data cable 11 fixed to the side of the bracket 3 via the terminal block. During the data processing stage, the data cable 11 transmits the collected signals to the impedance tester 12, which is movably connected to the side of the lower shell 1 via an adjustable bracket structure. The impedance tester 12 analyzes and processes the signals to obtain the high impedance performance data of the multilayer PCB board.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high impedance performance testing device for multilayer PCB boards, comprising a lower shell (1), characterized in that: The upper end of the lower shell (1) is movably connected to a bracket (3), and a movable groove (2) is provided on the lower shell (1). A movable block (4) is movably connected in the movable groove (2). A test pen (9) is movably connected through the bracket (3), and a motor (10) is fixedly connected to the bracket (3). The side of the motor (10) is movably connected to a rotating gear (16), and the side of the test pen (9) is fixedly connected to a gear platform (17). The rotating gear (16) is movably connected to the gear platform (17). The movable groove (2) is provided with a symmetrical second sliding groove (22), and the movable block (4) is fixedly connected with a symmetrical slider (15). The slider (15) is movably connected to the second sliding groove (22), and the movable block (4) is movably connected with a rotating bushing (20). A displacement shaft (5) is movably connected through the movable groove (2), and a threaded strip (6) is fixedly connected to the displacement shaft (5). A threaded groove (21) is opened in the rotating bushing (20), and the threaded groove (21) is movably connected to the threaded strip (6). The lower shell (1) has a rotating hole (19) inside. One end of the displacement shaft (5) is movably connected to the rotating hole (19), and the other end of the displacement shaft (5) is fixedly connected to a turntable (13). A movable handle (14) is movably connected to the side of the turntable (13). The lower shell (1) has a symmetrical first sliding groove (18) on its side. The lower end of the bracket (3) is movably connected to the first sliding groove (18). The upper end of the movable block (4) is fixedly connected to the first friction plate (7). The upper end of the lower shell (1) is fixedly connected to the second friction plate (8).

2. The high impedance performance testing device for multilayer PCB boards according to claim 1, characterized in that, A data cable (11) is fixedly connected to the side of the bracket (3), and a resistance tester (12) is movably connected to the side of the lower shell (1). The other end of the data cable (11) is fixedly connected to the resistance tester (12).

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