Testing device for verifying moisture-proof capability of circuit board card

Abstract

The utility model discloses a test device for verifying the moisture-proof capability of a circuit board card, which comprises a test box and a rectangular frame, a first boss is fixed on the inner wall of the test box, a sliding rod is sleeved on the first boss in a sliding manner, a box cover is fixed at the top end of the sliding rod, and the rectangular frame is fixed on the box cover. A lifting mechanism for driving the box cover to lift is mounted on the test box, a fixing plate fixedly sleeves the sliding rod, a strip-shaped hole is formed in the fixing plate, a fixing column is fixed to the top of each rectangular frame, a screw is fixed to the top of each fixing column, and a screw is fixed to the top of each screw. And the screw rod penetrates through the strip-shaped hole and is sleeved with a locking nut through a thread. The test box is simple to operate, convenient to fix the circuit board card, capable of being adjusted according to the size of the circuit board card, convenient to lift the circuit board card, good in stability and more compact in structure, and the size of the test box can be smaller.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a test device for verifying the moisture resistance of circuit boards. Background Technology

[0002] As a core component, the moisture resistance of circuit boards has a crucial impact on the stability and lifespan of equipment. Moisture in humid environments can easily penetrate circuit boards, causing short circuits, corrosion, and other problems, leading to circuit failures and affecting the normal operation of the entire electronic device. Therefore, accurately verifying the moisture resistance of circuit boards has become a key step in the quality inspection process in the electronics industry.

[0003] Currently, traditional methods and devices for testing the moisture resistance of circuit boards have many shortcomings. Some existing testing devices are cumbersome to operate when fixing circuit boards, requiring multiple additional tools for secure mounting. This is not only time-consuming and labor-intensive but also results in poor fixation, easily leading to circuit board shaking and displacement during testing, severely affecting the accuracy of test results. Furthermore, most existing devices lack compatibility with circuit boards of different sizes, making it difficult to flexibly adjust to meet diverse product needs. Testing different specifications of circuit boards often requires replacing the entire testing device, significantly increasing testing costs. In addition, some devices have large test chambers with insufficiently compact structural designs.

[0004] To address the above issues, we propose a testing device for verifying the moisture resistance of circuit boards. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a test device for verifying the moisture resistance of circuit boards.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A testing device for verifying the moisture resistance of circuit boards includes a test chamber and a rectangular frame. A first protrusion is fixed on the inner wall of the test chamber, and a slide rod is slidably sleeved on the first protrusion. A cover is fixed to the top of the slide rod. A lifting mechanism for raising and lowering the cover is installed on the test chamber. A fixing plate is fixedly sleeved on the slide rod, and a strip hole is opened on the fixing plate. Two rectangular frames are provided. A fixing post is fixed to the top of the rectangular frame, and a screw is fixed to the top of the fixing post. The screw passes through the strip hole and is threaded with a locking nut. Sleeves pass through both sides of the rectangular frame. A slider is slidably sleeved inside the sleeve. A spring connects the inside of the sleeve and the slider. A pressure plate is fixed to the slider by a push rod, and a rubber plate is fixed on the pressure plate.

[0008] Preferably, the test chamber has a drainage hole at the bottom side, and an oil plug is installed in the drainage hole.

[0009] Preferably, the lifting mechanism includes a second boss, a third boss, and a lead screw. The second boss is fixed on the box cover, the third boss is fixed on the test box, and the lead screw is rotatably sleeved inside the second boss. The lead screw is threaded into the third boss.

[0010] Preferably, a handwheel is fixed to the top end of the lead screw, and a limit block is fixed to the bottom end of the lead screw.

[0011] Preferably, the diameter of the fixing post is greater than the width of the strip hole, and the diameter of the fixing post is greater than the diameter of the screw.

[0012] Preferably, a testing instrument for testing circuit board cards is placed on the top of the box cover, and a wire-passing hole is provided on the top of the box cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, clean water is poured into the test chamber, and the two ends of the circuit board to be tested are inserted into two rectangular frames respectively. The distance between the two rectangular frames can be adjusted according to the length of the circuit board to facilitate better matching of the circuit board. The rectangular frames support the circuit board, and the edges of the circuit board are clamped and fixed by the spring force of the rubber plate. After installation, the locking nut is tightened to prevent the screw from sliding in the slot, thus ensuring the stable placement of the circuit board. The wires of the circuit board are passed through the wire hole and connected to the tester to facilitate the operation of the circuit board. The lifting mechanism moves the chamber cover down, immersing the circuit board in water until the chamber cover is placed on the test chamber. During the test, the circuit board is tested on the 5th and 10th days. After opening the circuit board, the tester is used to check whether it can work normally. If it works normally, the circuit board's three-proof performance is qualified; if it does not work, the three-proof performance is unqualified. After the test is completed, the oil plug is unscrewed to drain the water.

[0015] This invention is simple to operate, facilitates the fixing of circuit boards, and can be adjusted according to the size of the circuit boards, making it easy to raise and lower the circuit boards. It has good stability, and the cover provides good protection during the test, reducing external interference. At the same time, the structure is more compact, and the size of the test chamber can be made smaller. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a test device for verifying the moisture resistance of circuit boards according to the present invention;

[0017] Figure 2 This is a schematic diagram of the rectangular frame of a test device for verifying the moisture resistance of circuit boards, as proposed in this utility model.

[0018] Figure 3 for Figure 2 A partial structural diagram;

[0019] Figure 4 This is a schematic diagram of the structure of the rubber plate of a test device for verifying the moisture resistance of circuit boards, as proposed in this utility model.

[0020] In the diagram: 1 Test chamber, 2 Oil plug, 3 First boss, 4 Slide rod, 5 Fixing plate, 6 Screw, 7 Locking nut, 8 Strip hole, 9 Fixing column, 10 Rectangular frame, 11 Wire hole, 12 Detector, 13 Box cover, 14 Handwheel, 15 Second boss, 16 Lead screw, 17 Third boss, 18 Sleeve, 19 Spring, 20 Slider, 21 Push rod, 22 Pressure plate, 23 Rubber plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4A testing device for verifying the moisture resistance of circuit boards includes a test chamber 1 and a rectangular frame 10. A first boss 3 is fixed on the inner wall of the test chamber 1, and a slide rod 4 is slidably sleeved on the first boss 3. A cover 13 is fixed to the top of the slide rod 4. A lifting mechanism for raising and lowering the cover 13 is installed on the test chamber 1. A fixing plate 5 is fixedly sleeved on the slide rod 4, and a slotted hole 8 is opened on the fixing plate 5. Two rectangular frames 10 are provided. A fixing post 9 is fixed to the top of the rectangular frame 10, and a screw 6 is fixed to the top of the fixing post 9. The screw 6 passes through the slotted hole 8 and is threaded into the rectangular frame 10. A locking nut 7 is provided. Sleeves 18 extend through both sides of the rectangular frame 10. A slider 20 is slidably connected inside the sleeve 18. A spring 19 connects the inside of the sleeve 18 and the slider 20. A pressure plate 22 is fixed to the slider 20 via a push rod 21. A rubber plate 23 is fixed to the pressure plate 22. Water is poured into the test chamber 1. The two ends of the circuit board to be tested are inserted into the two rectangular frames 10 respectively. The distance between the two rectangular frames 10 can be adjusted according to the length of the circuit board to facilitate better matching. The rectangular frames 10 can be used to test the circuit board. The circuit board is supported by a card, and under the elastic force of spring 19, the edge of the circuit board card can be clamped and fixed by rubber plate 23. After installation, tighten the locking nut 7 to prevent the screw 6 from sliding in the slot 8, thus ensuring the stable placement of the circuit board card. The wires of the circuit board card are passed through the wire hole 11 and connected to the tester 12 to facilitate the start of the circuit board card's operation. The lifting mechanism drives the box cover 13 to move down, so that the circuit board card can be submerged in water until the box cover 13 covers the test chamber 1. During the test, on the 5th and 10th days... Do not test the circuit board. After opening the circuit board, use the tester 12 to check if it can work normally. If it can work normally, the circuit board is qualified for the three-proof performance. If it cannot work, the circuit board is unqualified for the three-proof performance. The bottom side of the test chamber 1 has a drainage hole with an oil plug 2 installed in the drainage hole. After the test is completed, unscrew the oil plug 2 to drain the water. The diameter of the fixing post 9 is larger than the width of the strip hole 8 and the diameter of the fixing post 9 is larger than the diameter of the screw 6. The tester 12 for testing the circuit board is placed on the top of the cover 13. The top of the cover 13 has a wire hole 11.

[0023] Reference Figure 1 The lifting mechanism includes a second boss 15, a third boss 17, and a lead screw 16. The second boss 15 is fixed on the box cover 13, and the third boss 17 is fixed on the test chamber 1. The lead screw 16 is rotatably sleeved inside the second boss 15. The lead screw 16 is threadedly sleeved inside the third boss 17. A handwheel 14 is fixed at the top of the lead screw 16, and a limit block is fixed at the bottom of the lead screw 16. By rotating the lead screw 16 through the handwheel 14, the second boss 15 can be lifted and lowered through the threaded transmission between the lead screw 16 and the third boss 17, thereby realizing the lifting and lowering of the box cover 13.

[0024] Working principle: During use, pour clean water into the test chamber 1, and insert both ends of the circuit board to be tested into the two rectangular frames 10 respectively. The distance between the two rectangular frames 10 can be adjusted according to the length of the circuit board to facilitate better matching of the circuit board. The rectangular frames 10 can support the circuit board. At the same time, under the elastic force of the spring 19, the edge of the circuit board can be clamped and fixed by the rubber plate 23. After installation, tighten the locking nut 7 to prevent the screw 6 from sliding in the slot 8, thus ensuring the stable placement of the circuit board. The wires of the circuit board are threaded through the wire hole 11 and connected to the tester 12 to facilitate the operation of the circuit board. The lifting mechanism moves the cover 13 down, so that the circuit board can be submerged in water until the cover 13 is placed on the test chamber 1. During the test, the circuit board is tested on the 5th and 10th days respectively. After the circuit board is opened, the tester 12 is used to check whether it can work normally. If it can work normally, the circuit board's three-proof performance is qualified. If it cannot work, the three-proof performance is unqualified. After the test is completed, the water can be drained by unscrewing the oil plug 2.

[0025] The operating principle of the lifting mechanism is as follows: by rotating the screw 16 through the handwheel 14, the screw 16 can be driven to lift the second boss 15 through the threaded transmission between the screw 16 and the third boss 17, thereby realizing the lifting of the box cover 13.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A test device for verifying the moisture-proof capability of a circuit board card, comprising a test box (1) and a rectangular frame (10), characterized in that, The inner wall of the test box (1) is fixed with a first boss (3), the first boss (3) is sleeved with a sliding rod (4), the top end of the sliding rod (4) is fixed with a box cover (13), the test box (1) is provided with a lifting mechanism for driving the box cover (13) to lift, the sliding rod (4) is fixedly sleeved with a fixed plate (5), the fixed plate (5) is provided with a strip-shaped hole (8), the rectangular frame (10) is provided with two, the top of the rectangular frame (10) is fixed with a fixed column (9), the top of the fixed column (9) is fixed with a screw rod (6), the screw rod (6) penetrates through the strip-shaped hole (8) and is sleeved with a locking nut (7) through threads, both sides of the rectangular frame (10) are penetrated by a sleeve (18), the inside of the sleeve (18) is sleeved with a sliding block (20) through sliding, the inside of the sleeve (18) and the sliding block (20) are connected with a spring (19), the sliding block (20) is fixed with a pressing plate (22) through a push rod (21), the pressing plate (22) is fixed with a rubber plate (23).

2. The test device for verifying the moisture-proof capability of a circuit board card according to claim 1, wherein, The side bottom of the test box (1) is provided with a drainage hole, and the drainage hole is provided with an oil plug (2).

3. The test device for verifying the moisture-proof capability of a circuit board card according to claim 1, wherein, The lifting mechanism comprises a second boss (15), a third boss (17) and a lead screw (16), the second boss (15) is fixed on the box cover (13), the third boss (17) is fixed on the test box (1), the second boss (15) is rotatably sleeved with the lead screw (16), and the lead screw (16) is threadedly sleeved in the third boss (17).

4. The test device for verifying the moisture-proof capability of a circuit board card according to claim 3, wherein The top end of the lead screw (16) is fixed with a hand wheel (14), and the bottom end of the lead screw (16) is fixed with a limiting block.

5. The test device for verifying the moisture-proof capability of a circuit board card according to claim 1, wherein, The diameter of the fixed column (9) is greater than the width of the strip-shaped hole (8), and the diameter of the fixed column (9) is greater than the diameter of the screw rod (6).

6. The test device for verifying the moisture-proof capability of a circuit board card according to claim 1, wherein, The top of the box cover (13) is placed with a detector (12) for detecting a circuit board card, and the top of the box cover (13) is provided with a threading hole (11).

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