Automobile electronic PCBA board test rack

Abstract

The utility model provides a kind of automobile electronic PCBA board test frame, including test platform, installation through slot is opened in test platform top, test base for placing PCBA board is set in installation through slot, test base top is provided with multiple groups of movable test pincette, test platform top is provided with test rack, the test rack bottom is provided with multiple groups of liftable burning probe corresponding test base, installation through slot bottom is provided with equipment box, heating groove is opened in equipment box top, heating module is set in heating groove inside corresponding test base;By the setting of test pincette, heating module and burning probe, traditional dispersed electrical conduction test, high temperature aging test and program burning are integrated in same equipment, avoid the transfer between PCBA board in manual test frame, aging room, burning device, make the originally step-by-step test process be able to be executed synchronously, solve the problem of long process in traditional test mode.

Description

Technical Field

[0001] This utility model belongs to the field of PCBA board testing technology, and more specifically, it relates to a test fixture for automotive electronic PCBA boards. Background Technology

[0002] As a core component of automotive electronic control units, vehicle sensors, and entertainment systems, PCBA boards are responsible for approximately 35% of automotive electronic failures, according to statistics. This is due to poor soldering, component failure, or incorrect program burning. Therefore, efficient and comprehensive testing has become a key step in the mass production of PCBA boards.

[0003] Traditional automotive electronics PCBA board testing typically involves a phased, equipment-based approach: first, the electrical connections of the PCBA board are tested using a manual test fixture; then, it is transferred to an aging chamber for high-temperature aging testing; and finally, a programmer is used separately to write the program. This multi-device switching results in a lengthy testing process, with a complete testing cycle for a single PCBA board reaching 4-6 hours, which is insufficient to meet the needs of large-scale automotive electronics production. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an automotive electronic PCBA board test fixture, which solves the technical problem that in the prior art, traditional PCBA board testing usually involves multiple devices. First, the electrical connections of the PCBA board are tested manually using a test fixture, then it is transferred to an aging chamber for high-temperature aging testing, and finally a separate programmer is used to complete the program writing. The long testing process caused by switching between multiple devices is a problem.

[0005] The purpose and effectiveness of this utility model, a test fixture for automotive electronic PCBA boards, are achieved through the following specific technical means:

[0006] An automotive electronic PCBA board test fixture includes a test platform;

[0007] The test platform has an installation slot at the top, and a test base for placing PCBA boards is provided in the installation slot. The test base has multiple sets of movable test pins at the top.

[0008] The test platform is equipped with a test rack at the top, and the test rack is equipped with multiple sets of liftable programming probes at the bottom corresponding to the test base.

[0009] The bottom of the mounting slot is provided with an equipment box, and the top of the equipment box is provided with a heating slot, and a heating module is provided in the heating slot corresponding to the test base.

[0010] According to a preferred embodiment, a conductive block is provided at the bottom of the test base, and multiple sets of power-conducting holes are opened at the top of the conductive block. The bottom ends of the multiple sets of test pins are slidably inserted into the multiple sets of power-conducting holes.

[0011] According to a preferred embodiment, the bottom of the test base has multiple sets of mounting holes corresponding to the multiple sets of power-conducting holes, the tops of the multiple sets of test pins pass through the multiple sets of mounting holes, and springs are provided in each of the multiple sets of mounting holes, with the multiple sets of springs respectively sleeved on the multiple sets of test pins.

[0012] According to a preferred embodiment, the test base and the conductive block are each provided with four sets of ejection holes. The bottom of the conductive block is provided with a liftable lifting frame, and the top of the lifting frame is provided with four sets of ejection pins. The four sets of ejection pins are slidably inserted into the four sets of ejection holes on the test base and the conductive block.

[0013] According to a preferred embodiment, a mounting base is provided at the bottom of the heating tank, and an electric lifting rod is provided at the top of the mounting base, with the top of the electric lifting rod connected to the lifting frame.

[0014] The test base is equipped with a silicone cushioning pad on top.

[0015] According to a preferred embodiment, multiple sets of air outlet holes are correspondingly provided on the test base and the conductive block, a fan is provided on the top of the heating module corresponding to the multiple sets of air outlet holes, and multiple sets of return air holes are provided on the periphery of the mounting slot.

[0016] A temperature sensor is installed in one of the sets of return air vents.

[0017] According to a preferred embodiment, a lifting cylinder is provided on one side of the test frame, a connecting column is connected to the bottom end of the lifting cylinder, a lifting plate is provided at the bottom end of the connecting column, and multiple sets of programming probes are equidistantly distributed at the bottom of the lifting plate.

[0018] The top of the lifting plate has multiple sets of ventilation holes.

[0019] According to a preferred embodiment, the bottom of the lifting plate is provided with four sets of fixing columns, and each of the four sets of fixing columns is provided with an elastic contact block at its bottom end.

[0020] A shielding cover is provided around the connecting column.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By using test pins on the top of the test base, a heating module inside the equipment box, and programming probes at the bottom of the test rack, the traditionally separate electrical continuity testing, high-temperature aging testing, and program programming are integrated into a single device. Specifically, after the PCBA board is placed on the test base, the bottom test pins and conductive blocks work together to complete the electrical performance test, the heating module in the heating tank can perform aging testing on the PCBA board, and the programming probes on the test rack can simultaneously complete the program writing after descending. This design avoids the transfer of the PCBA board between the manual test rack, aging chamber, and programmer, eliminates the time loss caused by switching between multiple devices, and allows the originally step-by-step testing process to be executed synchronously, effectively solving the problem of lengthy processes in traditional testing methods.

[0023] 2. The test pins inside the test base float elastically via springs, ensuring appropriate pressure for contact with the PCBA board pads and guaranteeing reliable electrical continuity during testing. They also buffer against mechanical impacts during PCBA board placement, preventing pad damage. Simultaneously, the lifting frame at the bottom of the conductive block works in conjunction with the ejector pins. When the electric lifting rod drives the lifting frame upwards, the ejector pins can push the tested PCBA board out of the test base, eliminating the need for manual disassembly and reducing loading / unloading time and operational errors. Furthermore, a lifting cylinder lowers the shielding cover around the test base, creating a closed heating environment. The heating module, along with a fan and temperature sensor, forms a thermal circulation system through the exhaust and return vents during aging tests, maintaining uniform temperature in the test area and preventing test data deviations caused by uneven temperature distribution, further enhancing the stability of the testing process.

[0024] 3. A lifting cylinder drives the programming probe to rise and fall, aligning it with the programming interface of the PCBA board to ensure reliable contact during program programming. Simultaneously, the shielding cover around the connecting pillar creates an electromagnetic shielding environment during programming, reducing the impact of external electromagnetic interference and preventing program writing failures due to interference. Furthermore, the elastic contact block at the bottom of the lifting plate provides cushioning when the programming probe contacts the PCBA board, preventing interface damage caused by rigid contact. The vent holes also aid in heat dissipation during programming, preventing excessive temperature in the lifting plate area from affecting probe performance and improving the reliability of the programming process. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is an exploded view of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the test base and conductive block after assembly in this utility model;

[0028] Figure 4for Figure 3 A schematic diagram of the disassembled structure.

[0029] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0030] 11. Test platform; 12. Mounting slot; 13. Test base; 14. Test pin; 15. Test frame; 16. Programming probe; 17. Equipment box; 18. Heating tank; 19. Heating module; 20. Conductive block; 21. Power hole; 22. Mounting hole; 23. Spring; 24. Ejection hole; 25. Lifting frame; 26. Ejection pin; 27. Mounting base; 28. Electric lifting rod; 29. ​​Silicone buffer pad; 30. Air outlet; 31. Fan; 32. Return air vent; 33. Temperature sensor; 34. Lifting cylinder; 35. Connecting column; 36. Lifting plate; 37. Vent hole; 38. Fixing column; 39. Elastic contact block; 40. Shielding cover. Detailed Implementation

[0031] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0032] Example:

[0033] As attached Figure 1 To be continued Figure 4 As shown:

[0034] This utility model provides a test rack for automotive electronic PCBA boards, including a test platform 11; a mounting slot 12 is provided on the top of the test platform 11, and a test base 13 for placing PCBA boards is provided in the mounting slot 12. Multiple sets of movable test pins 14 are provided on the top of the test base 13; a test frame 15 is provided on the top of the test platform 11, and multiple sets of liftable programming probes 16 are provided at the bottom of the test frame 15 corresponding to the test base 13; an equipment box 17 is provided at the bottom of the mounting slot 12, and a heating groove 18 is provided on the top of the equipment box 17. A heating module 19 is provided in the heating groove 18 corresponding to the test base 13. The heating module 19 can be of model LU-S510.

[0035] Specifically, the test pin 14 on the top of the test base 13, the heating module 19 inside the equipment box 17, and the programming probe 16 at the bottom of the test frame 15 integrate the traditionally separate electrical continuity test, high-temperature aging test, and program programming into a single device. Furthermore, when using this device, after placing the PCBA board on the test base 13, the bottom test pin 14 and the conductive block 20 work together to complete the electrical performance test. The heating module 19 in the heating tank 18 can perform an aging test on the PCBA board. After the aging test is completed, the bottom test pin 14 and the conductive block 20 work together to test the PCBA board. If there are no faults, the programming probe 16 can be lowered to complete the program writing. This avoids the transfer of the PCBA board between the manual test frame, the aging chamber, and the programmer, eliminates the time loss caused by switching between multiple devices, and allows the originally step-by-step test process to be executed synchronously, solving the problem of the lengthy process in the traditional test method.

[0036] Please refer to, for example Figure 3 and Figure 4 As shown, a conductive block 20 is provided at the bottom of the test base 13, and multiple sets of energizing holes 21 are opened on the top of the conductive block 20. The bottom ends of multiple sets of test pins 14 are slidably inserted into the multiple sets of energizing holes 21. For details, please refer to... Figure 3 and Figure 4 As shown, the bottom of the test base 13 has multiple sets of mounting holes 22 corresponding to multiple sets of power holes 21. The tops of multiple sets of test pins 14 pass through multiple sets of mounting holes 22. Each set of mounting holes 22 is equipped with a spring 23, and the multiple sets of springs 23 are respectively sleeved on the multiple sets of test pins 14. Specifically, the test pins 14 achieve elastic floating through the springs 23, which can contact the PCBA board pads with appropriate pressure to ensure the conductivity reliability of electrical testing, and can also buffer the mechanical impact when the PCBA board is placed to avoid damage to the pads.

[0037] Please refer to, for example Figure 4 As shown, the test base 13 and the conductive block 20 are each provided with four sets of ejection holes 24. The bottom of the conductive block 20 is provided with a liftable lifting frame 25, and the top of the lifting frame 25 is provided with four sets of ejection pins 26. The four sets of ejection pins 26 are slidably inserted into the four sets of ejection holes 24 on the test base 13 and the conductive block 20. The bottom of the heating tank 18 is provided with a mounting base 27, and the top of the mounting base 27 is provided with an electric lifting rod 28. The top of the electric lifting rod 28 is connected to the lifting frame 25. The top of the test base 13 is provided with a silicone buffer pad 29. Specifically, the lifting frame 25 at the bottom of the conductive block 20 cooperates with the ejection pins 26. When the electric lifting rod 28 drives the lifting frame 25 to rise, the ejection pins 26 can eject the tested PCBA board from the test base 13 without manual disassembly, reducing loading and unloading time and operational errors.

[0038] Please refer to, for example Figure 2 and Figure 4 As shown, multiple sets of air outlets 30 are correspondingly opened on the test base 13 and the conductive block 20. A fan 31 is installed on the top of the heating module 19 corresponding to the multiple sets of air outlets 30. Multiple sets of return air holes 32 are opened around the mounting slot 12. A temperature sensor 33 is installed in one set of return air holes 32. A lifting cylinder 34 is installed on one side of the test frame 15. A connecting column 35 is connected to the bottom of the lifting cylinder 34. A shielding cover 40 is installed around the connecting column 35. Specifically, the lifting cylinder 34 pushes the shielding cover 40 down to cover the test base 13, forming a closed heating environment. The heating module 19, together with the fan 31 and the temperature sensor 33, forms a thermal circulation through the air outlets 30 and return air holes 32 during the aging test, maintaining a uniform temperature in the test area, avoiding test data deviations caused by uneven temperature, and improving the stability of the test process.

[0039] Please refer to, for example Figure 2 As shown, a lifting plate 36 is provided at the bottom of the connecting post 35, and multiple sets of programming probes 16 are equidistantly distributed at the bottom of the lifting plate 36. Specifically, the lifting cylinder 34 pushes the multiple sets of programming probes 16 to rise and fall, so that the programming probes 16 correspond to the programming interface of the PCBA board, ensuring the reliability of the program programming contact. At the same time, the shielding cover 40 around the connecting post 35 forms an electromagnetic shielding environment during the programming process, reducing the impact of external electromagnetic interference on the programming process and avoiding program writing failure due to interference.

[0040] The top of the lifting plate 36 has multiple sets of ventilation holes 37, and the bottom of the lifting plate 36 has four sets of fixing posts 38, each of which has an elastic contact block 39 at its bottom. Specifically, the elastic contact block 39 at the bottom of the lifting plate 36 can provide a buffer when the programming probe 16 contacts the PCBA board, preventing interface damage caused by rigid contact. The multiple sets of ventilation holes 37 can assist in heat dissipation during programming, preventing the temperature of the lifting plate 36 area from being too high and affecting the performance of the programming probe 16, thus improving the reliability of the programming process.

[0041] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A test fixture for automotive electronic PCBA boards, characterized in that: This includes a testing platform (11); The test platform (11) has an installation slot (12) on the top, and a test base (13) for placing PCBA boards is provided in the installation slot (12). The test base (13) has multiple sets of movable test pins (14) on the top. The test platform (11) is provided with a test rack (15) on top, and the test rack (15) is provided with multiple sets of liftable programming probes (16) at the bottom corresponding to the test base (13); The bottom of the mounting slot (12) is provided with an equipment box (17), and the top of the equipment box (17) is provided with a heating slot (18). A heating module (19) is provided in the heating slot (18) corresponding to the test base (13).

2. The automotive electronic PCBA board test fixture according to claim 1, characterized in that: The test base (13) has a conductive block (20) at the bottom, and the top of the conductive block (20) has multiple sets of power-conducting holes (21). The bottom ends of the multiple sets of test pins (14) are slidably inserted into the multiple sets of power-conducting holes (21).

3. The automotive electronic PCBA board test fixture according to claim 2, characterized in that: The bottom of the test base (13) has multiple sets of mounting holes (22) corresponding to multiple sets of power holes (21). The top of the multiple sets of test pins (14) passes through the multiple sets of mounting holes (22). Each set of mounting holes (22) is provided with a spring (23). The multiple sets of springs (23) are respectively sleeved on the multiple sets of test pins (14).

4. The automotive electronic PCBA board test fixture according to claim 2, characterized in that: The test base (13) and the conductive block (20) are each provided with four sets of ejection holes (24). The bottom of the conductive block (20) is provided with a liftable lifting frame (25). The top of the lifting frame (25) is provided with four sets of ejection pins (26). The four sets of ejection pins (26) are slidably inserted into the four sets of ejection holes (24) on the test base (13) and the conductive block (20).

5. The automotive electronic PCBA board test fixture according to claim 4, characterized in that: The heating tank (18) is provided with a mounting base (27) at the bottom, and an electric lifting rod (28) is provided at the top of the mounting base (27). The top of the electric lifting rod (28) is connected to the lifting frame (25). The test base (13) is provided with a silicone cushioning pad (29) on top.

6. The automotive electronic PCBA board test fixture according to claim 2, characterized in that: Multiple sets of air outlet holes (30) are opened on the test base (13) and the conductive block (20), and a fan (31) is provided on the top of the heating module (19) corresponding to the multiple sets of air outlet holes (30). Multiple sets of return air holes (32) are opened on the periphery of the mounting slot (12). A temperature sensor (33) is installed inside one of the return air vents (32).

7. The automotive electronic PCBA board test fixture according to claim 1, characterized in that: A lifting cylinder (34) is provided on one side of the test frame (15). A connecting column (35) is connected to the bottom of the lifting cylinder (34). A lifting plate (36) is provided at the bottom of the connecting column (35). Multiple sets of programming probes (16) are equidistantly distributed at the bottom of the lifting plate (36). The top of the lifting plate (36) has multiple sets of ventilation holes (37).

8. The automotive electronic PCBA board test fixture according to claim 7, characterized in that: The bottom of the lifting plate (36) is provided with four sets of fixing columns (38), and each of the four sets of fixing columns (38) is provided with an elastic contact block (39) at its bottom end; A shielding cover (40) is provided around the connecting column (35).

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