PCB (printed circuit board) detection jig of water meter

Abstract

The utility model discloses a water meter PCB board detection jig, including test base, locating platform deck and pressure mechanism, locating platform deck floatably installs on the test base, locating platform deck top is equipped with first locating slot, second locating slot and pressing piece, first locating slot is located just above the detection probe and is used for placing main substrate, second locating slot is located just above the detection probe and is used for placing the main substrate. An avoiding hole communicated with the first positioning groove is formed in the position, corresponding to the detection probe, of the bottom of the positioning platform deck, the pressure mechanism is installed on the testing base and located over the first positioning groove, and the pressure mechanism is used for tightly pressing the main substrate placed in the first positioning groove so that the main substrate can make contact with the detection probe; the second positioning groove is used for placing an auxiliary substrate, and the abutting piece is rotatably installed on the positioning carrying table and used for tightly pressing the auxiliary substrate; the second positioning groove and the abutting piece are used for fixing the auxiliary substrate, interference of the auxiliary substrate on the main substrate in the detection process is prevented, the detection accuracy and reliability are improved, and powerful technical support is provided for quality control in the water meter production process.

Description

Technical Field

[0001] This utility model relates to the field of testing fixture technology, and in particular to a PCB board testing fixture for water meters. Background Technology

[0002] In the current water meter manufacturing process, a PCB board structure consisting of a main substrate and a sub-sub substrate is typically used. This design is primarily based on the following considerations:

[0003] Functional Integration and Zoning: The main board primarily handles the core metering functions of the water meter, such as flow detection and data acquisition, while the secondary board mainly handles communication functions, enabling remote data transmission through a communication module. This zoning design allows for more centralized functionality, facilitating circuit design and optimization, and improving overall performance.

[0004] Reducing interference risk: The communication module generates electromagnetic interference during operation, and the metering chips on the main substrate are quite sensitive to electromagnetic interference. Placing the communication module on the sub-sub ...

[0005] Facilitates modular design and maintenance: This structure enables modularization of different functions, making the production and assembly of water meters more flexible. Communication modules can be selectively installed or replaced according to the needs of different users and application scenarios without requiring modifications to the entire water meter. Furthermore, when a communication module malfunctions or requires an upgrade, only the sub-board needs repair or replacement, without affecting the normal operation of the main board and other functions, reducing maintenance costs and time, and improving the maintainability of the water meter.

[0006] Optimize spatial layout: The communication module is relatively large and needs to be connected and arranged with other components. Placing it on the sub-board allows more space for other important circuit components on the main board, making the overall circuit board layout more reasonable and compact, which is beneficial for the miniaturization and integration design of water meters.

[0007] However, when the function of the main substrate needs to be tested during the production process, the usual testing fixtures can only fix and test the main substrate, but cannot effectively fix the sub-substrate. This may cause the sub-substrate to interfere with the main substrate during the testing process, affecting the accuracy of the test results, and is also detrimental to the stability and reliability of the testing process. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a PCB board testing fixture for water meters, so as to solve the problem in the prior art that the sub-board cannot be effectively fixed when testing the function of the main board.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a PCB board testing fixture for water meters, comprising a test base, a positioning platform, and a pressure mechanism. The test base is provided with a testing probe for contacting and testing a main substrate. The positioning platform is buoyantly mounted on the test base. The top of the positioning platform is provided with a first positioning groove, a second positioning groove, and a pressing member. The first positioning groove is located directly above the testing probe and is used to place the main substrate. The bottom of the positioning platform has a clearance hole corresponding to the position of the testing probe, which communicates with the first positioning groove. The pressure mechanism is mounted on the test base and located directly above the first positioning groove. The pressure mechanism is used to press the main substrate placed in the first positioning groove so that the main substrate contacts the testing probe. The second positioning groove is used to place a secondary substrate. The pressing member is rotatably mounted on the positioning platform and is used to press the secondary substrate.

[0010] Furthermore, the pressing component includes a rotating bolt and a pressing plate. The rotating bolt is fixedly installed on the positioning platform. One end of the pressing plate is hinged to the rotating bolt, and the other end is a free end. The pressing plate can be rotated so that its free end presses against the surface of the sub-base plate.

[0011] Furthermore, an elastic element is fitted onto the rotating bolt, with the top of the elastic element abutting against the nut of the rotating bolt and the bottom of the elastic element abutting against the top of the pressure plate.

[0012] Furthermore, the elastic element is a spring.

[0013] Furthermore, the test base is also provided with an elastic top rod and a sliding shaft. The top of the elastic top rod and the top of the sliding shaft are connected to the bottom of the positioning platform, and the sliding shaft is slidably mounted on the test base.

[0014] Furthermore, the top of the positioning platform is also provided with a wire guide groove that connects the first positioning groove and the second positioning groove.

[0015] Furthermore, the number of the pressing members is two.

[0016] Furthermore, the two pressing members are located on opposite sides of the second positioning groove.

[0017] Furthermore, the second positioning groove is provided with an identification mark, and when the sub-substrate is placed in the second positioning groove, the sub-substrate blocks the identification mark.

[0018] Furthermore, the identification mark is made of a reflective material.

[0019] The beneficial effects of this utility model are as follows: The water meter PCB board testing fixture provided by this utility model achieves coordinated fixation and precise testing of the main and auxiliary substrates of the water meter during the testing process through innovative structural design. The fixture uses a testing probe on the test base to precisely contact the key testing points of the main substrate, while the first positioning groove of the positioning platform stably places the main substrate. A pressure mechanism ensures good electrical contact between the main substrate and the testing probe, guaranteeing stable and accurate testing signals. The second positioning groove and the pressing component are used to fix the auxiliary substrate, preventing it from interfering with the main substrate during testing. This effectively solves the problem of simultaneously and stably fixing the main and auxiliary substrates in existing technologies, improving the accuracy and reliability of testing, and providing strong technical support for quality control in the water meter production process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the PCB board structure of a water meter in the prior art;

[0021] Figure 2 This is a schematic diagram of the PCB board testing fixture for a water meter according to Embodiment 1 of this utility model;

[0022] Figure 3 This is an exploded view of the positioning platform according to Embodiment 1 of this utility model.

[0023] Label Explanation:

[0024] 1. Main substrate; 11. Sub-substrate; 2. Test base; 21. Mounting plate; 22. Wrench; 23. Pressure bar; 24. Pressure plate; 25. Sliding shaft; 26. Elastic push rod; 3. Positioning platform; 31. First positioning groove; 311. Alternating hole; 32. Second positioning groove; 33. Wire guide groove; 4. Rotating bolt; 5. Pressure plate; 6. Elastic element. Detailed Implementation

[0025] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please refer to Figures 1 to 3A PCB board testing fixture for water meters includes a test base 2, a positioning platform 3, and a pressure mechanism. The test base 2 is provided with a detection probe for contacting and testing a main substrate 1. The positioning platform 3 is buoyantly mounted on the test base 2. The top of the positioning platform 3 is provided with a first positioning groove 31, a second positioning groove 32, and a pressing member. The first positioning groove 31 is located directly above the detection probe and is used to place the main substrate 1. The bottom of the positioning platform 3 has a clearance hole 311 corresponding to the position of the detection probe, which communicates with the first positioning groove 31. The pressure mechanism is mounted on the test base 2 and located directly above the first positioning groove 31. The pressure mechanism is used to press the main substrate 1 placed in the first positioning groove 31 so that the main substrate 1 contacts the detection probe. The second positioning groove 32 is used to place a sub-substrate 11. The pressing member is rotatably mounted on the positioning platform 3 and is used to press the sub-substrate 11.

[0027] As can be seen from the above description, the beneficial effects of this utility model are as follows: The first positioning groove 31 on the top of the positioning stage 3 provides a precise positioning space for placing the main substrate 1. Its position strictly corresponds to the detection probe, ensuring that after the main substrate 1 is placed, the detection probe can accurately and reliably contact the key detection parts of the main substrate 1, thereby obtaining a stable and reliable detection signal and effectively guaranteeing the accuracy of the detection results; the second positioning groove 32 is specifically designed for the sub-substrate 11, providing a stable and reliable placement position for the sub-substrate 11. During the detection process, the proper placement of the sub-substrate 11 can effectively avoid its adverse effects on the detection process of the main substrate 1, such as preventing electromagnetic interference fluctuations or physical interference caused by the instability of the sub-substrate 11; the ingenious design of the pressure mechanism further optimizes the detection conditions of the main substrate 1. By applying uniform and moderate pressure to the main substrate 1 placed in the first positioning groove 31 through this mechanism, it is ensured that the main substrate 1 and the detection probe maintain good electrical contact throughout the detection process, avoiding unstable detection signals or misjudgments caused by poor contact, thereby significantly improving the reliability and accuracy of the detection results. The introduction of the pressing component improves the fixation measures for the sub-substrate 11. Its rotatable installation method allows operators to easily fix sub-substrate 11 of different sizes and shapes. During the detection process, the pressing component tightly presses down on the sub-substrate 11, preventing it from shifting or shaking due to external factors (such as equipment vibration, airflow, etc.), thereby creating a stable and reliable surrounding environment for the detection of the main substrate 1, ensuring that the entire detection process can be carried out smoothly and efficiently.

[0028] Furthermore, the pressing component includes a rotating bolt 4 and a pressing plate 5. The rotating bolt 4 is fixedly installed on the positioning platform 3. One end of the pressing plate 5 is hinged to the rotating bolt 4, and the other end is a free end. The pressing plate 5 can be rotated so that its free end presses against the surface of the sub-base plate 11.

[0029] As can be seen from the above description, the combination of rotating bolt 4 and pressure plate 5 can flexibly press and fix the sub-substrate 11, which is convenient to operate and can adapt to sub-substrate 11 of different thicknesses and shapes, thus enhancing the versatility and adaptability of the fixture to different sub-substrate 11.

[0030] Furthermore, an elastic element 6 is sleeved on the rotating bolt 4, the top of the elastic element 6 abuts against the nut of the rotating bolt 4, and the bottom of the elastic element 6 abuts against the top of the pressure plate 5.

[0031] As can be seen from the above description, adding an elastic element 6 to the rotating bolt 4 gives the pressure plate 5 a certain elastic buffering effect when it presses against the sub-substrate 11, which can apply pressure to the sub-substrate 11 more evenly, prevent the sub-substrate 11 from being damaged due to excessive force, and also improve the stability of the sub-substrate 11.

[0032] Furthermore, the elastic element 6 is a spring.

[0033] As can be seen from the above description, the spring has good elasticity and stability, and can provide reliable elastic buffering and pressure regulation functions, further optimizing the performance of the pressing component and ensuring that the sub-base plate 11 is reliably fixed and not easily damaged.

[0034] Furthermore, the test base 2 is also provided with an elastic top rod 26 and a sliding shaft 25. The top of the elastic top rod 26 and the top of the sliding shaft 25 are connected to the bottom of the positioning platform 3, and the sliding shaft 25 is slidably mounted on the test base 2.

[0035] As described above, the test base 2 is equipped with an elastic top rod 26 and a sliding shaft 25, which are connected to the positioning stage 3. This allows the positioning stage 3 to float and adjust relative to the test base 2 to a certain extent, which can better adapt to PCBs of different sizes and shapes, improve the versatility and applicability of the fixture, and also help maintain good contact between the main substrate 1 and the test probe during the testing process.

[0036] Furthermore, the top of the positioning platform 3 is also provided with a wire passage groove 33 that connects the first positioning groove 31 and the second positioning groove 32.

[0037] As described above, the positioning stage 3 is provided with a wire passage 33 that connects the first positioning groove 31 and the second positioning groove 32, which facilitates the arrangement of connecting wires between the main substrate 1 and the sub-substrate 11, avoids messy wires affecting the testing operation, improves the ease of use and efficiency of the fixture, and also ensures the stability of the testing process.

[0038] Furthermore, the number of the pressing members is two.

[0039] As described above, the number of pressing members is specified as two, which can press and fix the sub-substrate 11 from different positions. Compared with a single pressing member, the sub-substrate 11 can be fixed more stably, preventing the sub-substrate 11 from shifting or shaking during the detection process, and further improving the accuracy and reliability of the detection.

[0040] Furthermore, the two pressing members are located on opposite sides of the second positioning groove 32.

[0041] As described above, the two pressing members are located on opposite sides of the second positioning groove 32. This layout can apply pressure to the sub-substrate 11 more evenly, making the sub-substrate 11 more firmly fixed in the second positioning groove 32. This effectively avoids the sub-substrate 11 from tilting or being subjected to excessive local stress during the testing process, ensuring the stability of the sub-substrate 11 and not affecting the testing of the main substrate 1.

[0042] Furthermore, the second positioning groove 32 is provided with an identification mark. When the sub-substrate 11 is placed in the second positioning groove 32, the sub-substrate 11 blocks the identification mark.

[0043] As described above, an identification mark is set in the second positioning groove 32. When the sub-substrate 11 is placed in the second positioning groove 32, it can be quickly determined whether the sub-substrate 11 is correctly placed by whether the identification mark is blocked. This improves the convenience and accuracy of operation and helps to avoid detection errors or equipment damage caused by improper placement of the sub-substrate 11.

[0044] Furthermore, the identification mark is made of a reflective material.

[0045] As described above, by setting the material of the identification mark to reflective material, the reflective properties can be used to more clearly show whether the sub-substrate 11 is blocking the identification mark under light, which further improves the identification effect of the placement status of the sub-substrate 11, making it easier for operators to make quick and accurate judgments and improving the practicality and ease of use of the testing fixture.

[0046] Please refer to Figures 1 to 3The first embodiment of this utility model is as follows: a PCB board testing fixture for a water meter, including a test base 2, a positioning platform 3, and a pressure mechanism. The test base 2 is provided with a testing probe (not shown) for contacting and testing a main substrate 1. The positioning platform 3 is buoyantly mounted on the test base 2. The top of the positioning platform 3 is provided with a first positioning groove 31, a second positioning groove 32, and a pressing member. The first positioning groove 31 is located directly above the testing probe and is used to place the main substrate 1. The bottom of the positioning platform 3 is provided with a clearance hole 311 corresponding to the position of the testing probe, which communicates with the first positioning groove 31. The pressure mechanism is mounted on the test base 2 and located directly above the first positioning groove 31. The pressure mechanism is used to press the main substrate 1 placed in the first positioning groove 31 so that the main substrate 1 contacts the testing probe. The second positioning groove 32 is used to place a secondary substrate 11. The pressing member is rotatably mounted on the positioning platform 3 and is used to press the secondary substrate 11. Specifically, the pressure mechanism includes a mounting plate 21, a wrench 22, a pressure rod 23, and a pressure plate 24. The mounting plate 21 is mounted on the test base 2. The wrench 22 is hinged to the top of the mounting plate 21 and the pressure rod 23. The pressure rod 23 is slidably mounted on the mounting plate 21. The pressure plate 24 is mounted on the bottom of the pressure rod 23 and is located directly above the positioning groove. The pressure plate 24 is used to press the main substrate 1 placed in the first positioning groove 31, thereby causing the positioning stage 3 to descend, and thus allowing the detection probe to penetrate the clearance hole 311 and contact the main substrate 1 to achieve functional detection.

[0047] Preferably, the pressing component includes a rotating bolt 4 and a pressing plate 5. The rotating bolt 4 is fixedly installed on the positioning platform 3. One end of the pressing plate 5 is hinged to the rotating bolt 4, and the other end is a free end. The pressing plate 5 can be rotated so that its free end presses against the surface of the sub-base plate 11. It can be understood that the combination of the rotating bolt 4 and the pressing plate 5 allows for flexible pressing and fixing of the sub-base plate 11, which is convenient for operation and can adapt to sub-base plates 11 of different thicknesses and shapes, thus enhancing the versatility and adaptability of the fixture to different sub-base plates 11. Specifically, the rotating bolt 4... An elastic element 6 is fitted onto the upper part of the plate. The top of the elastic element 6 abuts against the nut of the rotating bolt 4, and the bottom of the elastic element 6 abuts against the top of the pressure plate 5. In this way, the pressure plate 5 has a certain elastic buffering effect when pressing against the sub-base plate 11, which can apply pressure to the sub-base plate 11 more evenly, prevent damage to the sub-base plate 11 due to excessive force, and also improve the stability of the sub-base plate 11. Optionally, the elastic element 6 can be a spring or an elastic bushing. The type of elastic element 6 can be selected according to the actual application requirements, which will not be elaborated here.

[0048] Preferably, the test base 2 is further provided with an elastic top rod 26 and a sliding shaft 25. The top of the elastic top rod 26 and the top of the sliding shaft 25 are connected to the bottom of the positioning stage 3. The sliding shaft 25 is slidably mounted on the test base 2. In this way, the positioning stage 3 can float and shift relative to the test base 2 to a certain extent, which can better adapt to PCBs of different sizes and shapes, improve the versatility and applicability of the fixture, and also help maintain good contact between the main substrate 1 and the test probe during the testing process.

[0049] In this embodiment, the top of the positioning platform 3 is also provided with a wire passage groove 33 connecting the first positioning groove 31 and the second positioning groove 32. This facilitates the arrangement of connecting wires between the main substrate 1 and the sub-substrate 11, avoids messy wires affecting the testing operation, improves the ease of use and efficiency of the fixture, and also ensures the stability of the testing process. Furthermore, there are two pressing members, which can press and fix the sub-substrate 11 from different positions. Compared with a single pressing member, it can fix the sub-substrate 11 more stably, prevent the sub-substrate 11 from shifting or shaking during the testing process, and further improve the accuracy and reliability of the testing. In detail, the two pressing members are located on opposite sides of the second positioning groove 32. This layout can apply pressure to the sub-substrate 11 more evenly, making the sub-substrate 11 more firmly fixed in the second positioning groove 32, effectively avoiding the sub-substrate 11 from tilting or being subjected to excessive local force during the testing process, ensuring the stability of the sub-substrate 11 and not affecting the testing of the main substrate 1.

[0050] In some other embodiments, an identification mark (not shown) may also be provided in the second positioning groove 32. When the sub-substrate 11 is placed in the second positioning groove 32, the sub-substrate 11 blocks the identification mark. In this way, whether the sub-substrate 11 is correctly placed can be quickly determined by whether the identification mark is blocked, which improves the convenience and accuracy of operation and helps to avoid detection errors or equipment damage caused by improper placement of the sub-substrate 11. Furthermore, the identification mark can be made of reflective material. Utilizing the reflective properties, it can more clearly show whether the sub-substrate 11 blocks the identification mark under light, which further improves the identification effect of the sub-substrate 11's placement status, making it easier for operators to quickly and accurately judge and improving the practicality and ease of use of the detection fixture.

[0051] In summary, the water meter PCB board testing fixture provided by this utility model, through its innovative structural design, achieves coordinated fixation and precise testing of the main and auxiliary substrates of the water meter during the testing process. This fixture uses a testing probe on the test base to precisely contact the key testing points of the main substrate. Simultaneously, the first positioning groove of the positioning platform stably positions the main substrate, and a pressure mechanism ensures good electrical contact between the main substrate and the testing probe, guaranteeing stable and accurate testing signals. The second positioning groove and the pressing component are used to fix the auxiliary substrate, preventing it from interfering with the main substrate during testing. This effectively solves the problem of simultaneously and stably fixing the main and auxiliary substrates in existing technologies, improving the accuracy and reliability of testing, and providing strong technical support for quality control in the water meter production process.

[0052] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A PCB board testing fixture for water meters, characterized in that, The device includes a test base, a positioning stage, and a pressure mechanism. The test base is equipped with a detection probe for contacting and testing a main substrate. The positioning stage is floatingly mounted on the test base. The top of the positioning stage has a first positioning groove, a second positioning groove, and a pressing member. The first positioning groove is located directly above the detection probe and is used to place the main substrate. The bottom of the positioning stage has a clearance hole corresponding to the position of the detection probe, which communicates with the first positioning groove. The pressure mechanism is mounted on the test base and located directly above the first positioning groove. The pressure mechanism is used to press the main substrate placed in the first positioning groove so that the main substrate contacts the detection probe. The second positioning groove is used to place a sub-substrate. The pressing member is rotatably mounted on the positioning stage and is used to press the sub-substrate.

2. The PCB board testing fixture for water meters according to claim 1, characterized in that, The pressing component includes a rotating bolt and a pressing plate. The rotating bolt is fixedly installed on the positioning platform. One end of the pressing plate is hinged to the rotating bolt, and the other end is a free end. The pressing plate can be rotated so that its free end presses against the surface of the sub-base plate.

3. The PCB board testing fixture for water meters according to claim 2, characterized in that, An elastic element is fitted onto the rotating bolt. The top of the elastic element abuts against the nut of the rotating bolt, and the bottom of the elastic element abuts against the top of the pressure plate.

4. The PCB board testing fixture for water meters according to claim 3, characterized in that, The elastic element is a spring.

5. The PCB board testing fixture for water meters according to claim 1, characterized in that, The test base is also provided with an elastic top rod and a sliding shaft. The top of the elastic top rod and the top of the sliding shaft are connected to the bottom of the positioning platform, and the sliding shaft is slidably mounted on the test base.

6. The PCB board testing fixture for water meters according to claim 1, characterized in that, The top of the positioning platform is also provided with a wire guide groove that connects the first positioning groove and the second positioning groove.

7. The PCB board testing fixture for water meters according to claim 1, characterized in that, The number of the pressing components is two.

8. The PCB board testing fixture for water meters according to claim 7, characterized in that, The two pressing members are located on opposite sides of the second positioning groove.

9. The PCB board testing fixture for water meters according to claim 1, characterized in that, The second positioning groove is provided with an identification mark. When the sub-substrate is placed in the second positioning groove, the sub-substrate blocks the identification mark.

10. The PCB board testing fixture for water meters according to claim 9, characterized in that, The identification mark is made of reflective material.

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