PCB multi-core test fixture

Abstract

The utility model discloses a PCB (printed circuit board) multi-core test fixture, which belongs to the technical field of circuit board test tools and comprises a base, a partition type control module, a partition limiting unit, a supporting vertical frame, a plurality of reciprocating driving mechanisms and a plurality of test probe modules. The partition type control module is arranged on the side edge of the base, and the partition limiting unit is arranged on the base; the supporting vertical frame is fixedly arranged above the base, and the reciprocating driving mechanisms are distributed on the supporting vertical frame; the test probe modules are arranged between the partition limiting units and the reciprocating driving mechanisms, each test probe module is correspondingly and movably connected to one reciprocating driving mechanism, and the partition type control module is in control connection with the reciprocating driving mechanisms. The PCB multi-core test fixture provided by the utility model solves the technical problem of how to improve the test efficiency of the PCB and the universality of the PCB test fixture.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing tooling, in particular to a multi-core testing fixture for PCB. Background Technique

[0002] The printed circuit board, namely PCB, as an indispensable part of electronic devices, its quality directly affects the performance and stability of the entire electronic system; to ensure the reliability of PCB products, comprehensive tests need to be carried out during and after the production process.

[0003] Among them, the evaluation of electrical performance is the core link of the test, which mainly includes the following steps: using a multimeter or special test equipment to conduct on-off tests on each circuit on the PCB to ensure that the circuit connections are correct; then, by applying different voltages and currents, testing the voltage withstand and current withstand capabilities of the PCB; finally, using equipment such as an oscilloscope to collect and analyze the signals on the PCB, and evaluating signal stability, accuracy and other indicators.

[0004] In the above-mentioned test link of electrical performance evaluation, in order to properly position the PCB, a PCB test tooling is usually required. The PCB test tooling is a tool or equipment designed specifically for PCB testing. It is mainly used to verify the electrical performance, functional integrity and mechanical strength of the PCB board to ensure the quality and reliability of the PCB during production and use. The test tooling can improve the test efficiency, ensure product quality and reliability, and provide strong support for electronic manufacturing and research and development.

[0005] Based on this, Chinese Patent CN206497181U discloses a PCB test fixture, which includes a base, a bearing platform, a lower pressing plate, a wafer holding plate, a manual crank and a bracket. The bearing platform and the bracket are fixed on the base. The bearing platform is used to carry the PCB board to be tested. The manual crank is mounted on the bracket, and the movable end is fixedly connected to the lower pressing plate. The wafer holding plate is fixed below the lower pressing plate. The position of the wafer holding plate corresponds to the position of the PCB board to be tested. A communication card is also provided on the wafer holding plate. This kind of test fixture uses the manual crank to control the lower pressing plate to press down, realizes the short-distance wireless communication between the communication card and the PCB board to be tested, and thus completes the function test of the electronic label; when the lower pressing plate is lifted, the next PCB board to be tested is replaced to realize continuous testing and improve the test efficiency.

[0006] However, the above-disclosed PCB test fixture still has technical problems of insufficient test efficiency and poor versatility. Specifically, in the production test requirements of PCBs, it is usually necessary to detect a batch of PCBs one by one. However, the test tooling disclosed in the prior art can only test one PCB or one position on a PCB each time. After each single test, disassembly and reassembly are required repeatedly, which affects the batch test efficiency requirements. In addition, there are a wide variety of PCBs produced by each manufacturer. The test tooling disclosed in the existing patents is a single customized tooling, and different models and types of PCBs need to be customized separately to meet the test requirements, which is not conducive to the generalization requirements of the tooling fixture. Summary of the Utility Model

[0007] Based on this, it is necessary to provide a multi-core test fixture for PCBs to address the technical problems of how to improve the test efficiency of PCBs and the versatility of PCB test tooling.

[0008] A multi-core test fixture for PCBs includes: a base, a partitioned control module, a partitioned limiting unit, a supporting vertical frame, a plurality of reciprocating driving mechanisms, and a plurality of test probe modules; the partitioned control module is arranged on the side of the base, and the partitioned limiting unit is arranged on the base; the supporting vertical frame is fixedly arranged above the base, and a plurality of the reciprocating driving mechanisms are distributed on the supporting vertical frame; the test probe modules are arranged between the partitioned limiting unit and the reciprocating driving mechanisms, each of the test probe modules is correspondingly and movably connected to one of the reciprocating driving mechanisms, and the partitioned control module is connected to the reciprocating driving mechanisms for control.

[0009] Further, each of the reciprocating driving mechanisms is provided with a reciprocating driving cylinder, a lifting mounting part, a stable traction frame, and a telescopic connecting rod.

[0010] Furthermore, the reciprocating driving cylinder is fixedly connected to the supporting vertical frame, the lifting mounting part is movably arranged between the partitioned limiting unit and the supporting vertical frame, and the stable traction frame is respectively connected to the supporting vertical frame and the lifting mounting part.

[0011] Furthermore, the telescopic connecting rod is arranged between the stable traction frame and the lifting mounting part, and the telescopic connecting rod is respectively connected to the lifting mounting part and the reciprocating driving cylinder.

[0012] Furthermore, the partitioned control module is correspondingly connected to the reciprocating driving cylinder for control.

[0013] Furthermore, each of the test probe modules is provided with a probe bearing substrate, a sliding limiting structure, a plurality of test probe structures, and input / output connectors.

[0014] Furthermore, the probe carrier substrate is movably connected to the lifting and mounting part. A sliding limit structure is arranged on each side of the probe carrier substrate, and the sliding limit structure is movably abutted against the lifting and mounting part.

[0015] Furthermore, a plurality of the test probe structures are evenly arranged in the probe carrier substrate, and the input / output connector is arranged on the other end side of the probe carrier substrate relative to the sliding limit structure.

[0016] Furthermore, the lifting and mounting part has a lifting connection plate and a clamping chute structure.

[0017] Furthermore, the top of the lifting connection plate is respectively connected to the stable traction frame and the telescopic connecting rod; the bottom of the lifting connection plate is provided with the clamping chute structure, the probe carrier substrate is movably connected to match the clamping chute structure, and the sliding limit structure is movably abutted against the end face of the clamping chute structure.

[0018] In summary, a PCB multi-core test fixture of the present invention is respectively provided with a base, a partitioned control module, a partitioned limit unit, a supporting upright frame, a plurality of reciprocating driving mechanisms and a plurality of test probe modules; the partitioned control module is arranged on the side of the base, and the partitioned limit unit is arranged on the base; the supporting upright frame is fixedly arranged above the base, and a plurality of the reciprocating driving mechanisms are distributed on the supporting upright frame; the test probe module is arranged between the partitioned limit unit and the reciprocating driving mechanism, and each test probe module is movably connected to a reciprocating driving mechanism correspondingly, and the partitioned control module is connected to the reciprocating driving mechanism for control. Specifically, a PCB multi-core test fixture of the present invention proposes a technical solution in which a plurality of reciprocating driving mechanisms are provided to respectively drive a plurality of test probe modules to simultaneously test multiple groups of PCBs, thereby improving the efficiency of batch testing of PCBs. In addition, the test probe module can be conveniently disassembled and assembled from the reciprocating driving mechanism, and the provided partitioned limit unit can also be adapted to different PCB clamping fixtures; when testing different models of PCBs, only the test probe module needs to be correspondingly paired with the clamping tool adapted to the partitioned limit unit, and the overall structure of the test fixture does not need to be redesigned and developed. Therefore, the versatility of the PCB test fixture is improved. Therefore, a PCB multi-core test fixture of the present invention solves the technical problems of how to improve the test efficiency of PCBs and the versatility of PCB test tooling. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a PCB multi-core test fixture of the present invention;

[0020] Figure 2 This is a schematic structural diagram of another direction of a multi-core test fixture for a PCB of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of another direction of a multi-core test fixture for a PCB of the present utility model. Detailed implementation manners

[0022] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present utility model.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In the present utility model, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0028] Please refer to Figures 1 to 3 , a PCB multi-core test fixture of the present utility model includes: a base 1, a partitioned control module 2, a partitioned limiting unit 3, a supporting upright frame 4, a plurality of reciprocating driving mechanisms 5 and a plurality of test probe modules 6; the partitioned control module 2 is disposed on the side of the base 1, and the partitioned limiting unit 3 is disposed above the base 1; the supporting upright frame 4 is fixedly disposed above the base 1, and a plurality of the reciprocating driving mechanisms 5 are distributed on the supporting upright frame 4; the test probe module 6 is disposed between the partitioned limiting unit 3 and the reciprocating driving mechanism 5, and each test probe module 6 is correspondingly movably connected to a reciprocating driving mechanism 5, and the partitioned control module 2 is in control connection with the reciprocating driving mechanism 5.

[0029] Specifically, when a PCB multi-core test fixture of the present utility model is in the working process, the user first clamps the PCB to be tested with a corresponding fixture, places the fixture on the partition limiting unit 3, and then controls the corresponding reciprocating driving mechanism 5 to act through the partition control module 2, so that the corresponding reciprocating driving mechanism 5 drives the test probe module 6 to descend until it abuts against the PCB to be tested located on the partition limiting unit 3; thus, with the assistance of an external test device, the performance test of the corresponding area of the PCB is completed. More specifically, a PCB multi-core test fixture of the present utility model proposes a technical solution in which a plurality of reciprocating driving mechanisms 5 are provided to respectively drive a plurality of test probe modules 6 to simultaneously test multiple groups of PCBs, thereby improving the efficiency of batch testing of PCBs. In addition, the test probe module 6 can be conveniently disassembled and assembled from the reciprocating driving mechanism 5, and the provided partition limiting unit 3 can also be adapted to different PCB clamping fixtures; when testing different models of PCBs, it is only necessary to correspondingly pair the test probe module 6 with a clamping tool adapted to the partition limiting unit 3, and the overall structure of the test fixture does not need to be redesigned and developed, thereby improving the versatility of the PCB test fixture.

[0030] Further, each of the reciprocating driving mechanisms 5 is provided with a reciprocating driving cylinder 501, a lifting and mounting portion 502, a stable traction frame 503, and a telescopic connecting rod 504; the reciprocating driving cylinder 501 is fixedly connected to the supporting vertical frame 4, the lifting and mounting portion 502 is movably arranged between the partition limiting unit 3 and the supporting vertical frame 4, and the stable traction frame 503 is respectively connected to the supporting vertical frame 4 and the lifting and mounting portion 502; the telescopic connecting rod 504 is arranged between the stable traction frame 503 and the lifting and mounting portion 502, the telescopic connecting rod 504 is respectively connected to the lifting and mounting portion 502 and the reciprocating driving cylinder 501, and the partition control module 2 is correspondingly connected to the reciprocating driving cylinder 501 for control.

[0031] Specifically, a PCB multi-core test fixture of the present utility model proposes a technical solution in which two of the reciprocating driving mechanisms 5 are arranged in parallel on the supporting vertical frame 4, and the partition control module 2 is correspondingly provided with two physical button control areas (not shown in the figure), and each physical button control area can correspondingly control the start and stop and other control operations of one of the reciprocating driving cylinders 501.

[0032] More specifically, after the reciprocating drive cylinder 501 is activated, it can drive the telescopic connecting rod 504 to extend or contract, thereby driving the lifting and mounting part 502 to move downward or upward. When the lifting and mounting part 502 moves, the stable traction frame 503 can traction the movement of the lifting and mounting part 502 to improve the stability of the lifting and mounting part 502 during the lifting movement.

[0033] Further, each of the test probe modules 6 is provided with a probe carrier substrate 601, a sliding limit structure 602, a plurality of test probe structures 603, and an input / output connector 604; the probe carrier substrate 601 is movably connected to the lifting and mounting part 502, and one sliding limit structure 602 is provided on each side of the probe carrier substrate 601, and the sliding limit structure 602 is movably abutted against the lifting and mounting part 502; a plurality of the test probe structures 603 are evenly arranged in the probe carrier substrate 601, and the input / output connector 604 is arranged on the other end side of the probe carrier substrate 601 relative to the sliding limit structure 602.

[0034] Specifically, an external circuit board test auxiliary device can be electrically connected to the test probe module 6 through the input / output connector 604, so that when the lifting and mounting part 502 drives the probe carrier substrate 601 to move downward, the test probe structure 603 correspondingly abuts against a preset area of the circuit board to be tested, thereby electrically connecting the circuit board to the external circuit board test auxiliary device.

[0035] Furthermore, the lifting and mounting part 502 has a lifting connection plate 502a and a clamping chute structure 502b; the top of the lifting connection plate 502a is respectively connected to the stable traction frame 503 and the telescopic connecting rod 504; the bottom of the lifting connection plate 502a is provided with a clamping chute structure 502b, and the probe carrier substrate 601 is movably connected in a matching manner with the clamping chute structure 502b, and the sliding limit structure 602 is movably abutted against the end face of the clamping chute structure 502b.

[0036] Specifically, the user can slidably and clampingly connect the corresponding probe carrier substrate 601 to be used this time into the clamping chute structure 502b provided at the bottom of the lifting connection plate 502a. After the sliding is in place, the sliding limit structure 602 can abut against the end face of the clamping chute structure 502b to prevent the probe carrier substrate 601 from sliding beyond the preset range.

[0037] In summary, a multi-core test fixture for PCB of the present utility model is respectively provided with a base 1, a partitioned control module 2, a partitioned limiting unit 3, a supporting upright frame 4, a plurality of reciprocating driving mechanisms 5 and a plurality of test probe modules 6; the partitioned control module 2 is arranged on the side of the base 1, and the partitioned limiting unit 3 is arranged above the base 1; the supporting upright frame 4 is fixedly arranged above the base 1, and a plurality of the reciprocating driving mechanisms 5 are distributed on the supporting upright frame 4; the test probe module 6 is arranged between the partitioned limiting unit 3 and the reciprocating driving mechanism 5, and each test probe module 6 is movably connected to a reciprocating driving mechanism 5 correspondingly, and the partitioned control module 2 is connected to the reciprocating driving mechanism 5 for control. Specifically, a multi-core test fixture for PCB of the present utility model proposes a technical solution in which a plurality of reciprocating driving mechanisms 5 are provided to respectively drive a plurality of test probe modules 6 to simultaneously test multiple groups of PCBs, thereby improving the efficiency of batch testing of PCBs. In addition, the test probe module 6 can be conveniently disassembled and assembled from the reciprocating driving mechanism 5, and the provided partitioned limiting unit 3 can also be adapted to different PCB clamping fixtures; when testing different models of PCBs, it is only necessary to correspondingly pair the test probe module 6 with the clamping tool adapted to the partitioned limiting unit 3, and the overall structure of the test fixture does not need to be redesigned and developed. Thus, the versatility of the PCB test fixture is improved. Therefore, a multi-core test fixture for PCB of the present utility model solves the technical problems of how to improve the test efficiency of PCBs and the versatility of PCB test tooling.

[0038] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0039] The above-described embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it cannot be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A PCB multi-core test fixture, characterized in that: It includes: A base (1), a partition control module (2), a partition limiting unit (3), a support stand (4), a plurality of reciprocating drive mechanisms (5) and a plurality of test probe modules (6); the partition control module (2) is arranged on the side of the base (1), and the partition limiting unit (3) is arranged on the base (1); the support stand (4) is fixedly arranged above the base (1), and a plurality of reciprocating drive mechanisms (5) are distributed on the support stand (4); the test probe module (6) is arranged between the partition limiting unit (3) and the reciprocating drive mechanism (5), each of the test probe modules (6) is movably connected to a corresponding reciprocating drive mechanism (5), and the partition control module (2) is controllably connected to the reciprocating drive mechanism (5).

2. A PCB multi-core test fixture according to claim 1, characterized in that: Each of the reciprocating drive mechanisms (5) is provided with a reciprocating drive cylinder (501), a lifting installation portion (502), a stable traction frame (503) and a telescopic connecting rod (504).

3. A PCB multi-core test fixture according to claim 2, characterized in that: The reciprocating drive cylinder (501) is fixedly connected to the supporting frame (4), the lifting installation part (502) is movably arranged between the partition limit unit (3) and the supporting frame (4), and the stable traction frame (503) is respectively connected to the supporting frame (4) and the lifting installation part (502).

4. A PCB multi-core test fixture according to claim 3, characterized in that: The telescopic connecting rod (504) is arranged between the stable traction frame (503) and the lifting installation part (502), and the telescopic connecting rod (504) connects the lifting installation part (502) and the reciprocating driving cylinder (501) respectively.

5. A PCB multi-core test fixture according to claim 4, characterized in that: The partitioned control module (2) is correspondingly connected to the reciprocating drive cylinder (501) for control.

6. A PCB multi-core test fixture according to claim 5, characterized in that: Each of the test probe modules (6) is provided with a probe bearing substrate (601), a sliding limit structure (602), a plurality of test probe structures (603) and an input and output connector (604).

7. A PCB multi-core test fixture according to claim 6, characterized in that: The probe bearing substrate (601) is movably connected to the lifting installation part (502), and a sliding limit structure (602) is provided on each side of the probe bearing substrate (601), and the sliding limit structure (602) is movably abutted against the lifting installation part (502).

8. A PCB multi-core test fixture according to claim 7, characterized in that: A plurality of the test probe structures (603) are evenly arranged in the probe bearing substrate (601), and the input / output connector (604) is arranged at the other end side of the probe bearing substrate (601) relative to the sliding limit structure (602).

9. A PCB multi-core test fixture according to claim 8, characterized in that: The lifting installation part (502) comprises a lifting connection plate (502a) and a clamping slide groove structure (502b).

10. A PCB multi-core test fixture according to claim 9, characterized in that: The top of the lifting connection plate (502a) is respectively connected to the stable traction frame (503) and the telescopic connection rod (504); the bottom of the lifting connection plate (502a) is provided with the snap-fitting slide groove structure (502b), the probe carrying substrate (601) is matched and movably connected with the snap-fitting slide groove structure (502b), and the sliding limiting structure (602) is movably abutted with the end face of the snap-fitting slide groove structure (502b).

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