Circuit board clamping device for vibration test

Abstract

The utility model belongs to circuit board fixing clamp technical field provides a kind of circuit board clamping device for vibration test, it includes adapter base and clamping assembly, and adapter base is equipped with sliding slot;Clamping assembly includes sliding block, clamping arm, first locating screw, second locating screw and spring;Sliding block is slidably arranged in sliding slot and is fixed by first positioning hole;The first end of clamping arm and the first nut top of first locating screw upper portion abut, and the horizontal part of sliding block is screw-connected with the first end of first locating screw lower portion;Second locating screw lower portion and the horizontal part second end of sliding block are screw-connected, and the upper portion of second locating screw is penetrated clamping arm outside and is locked between the upper end surface of clamping arm by second nut, and spring is arranged on second locating screw.The utility model is accurately positioned by changing the position of clamping assembly in sliding slot, both realizes the fixation of circuit board of different shape, size and thickness, and can also simultaneously test multiple circuit boards, improves test efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board fixing fixture technology, specifically relating to a circuit board clamping device for vibration testing. Background Technology

[0002] In vibration testing of circuit boards, to verify their vibration resistance at different frequencies and amplitudes, the boards typically need to be fixed to a dedicated test fixture. However, due to the varying sizes, shapes, and thicknesses of circuit boards, existing fixtures are insufficient to meet diverse needs. Test fixtures designed with current technology can only fix and test circuit boards of a single specification or shape per test. Conducting vibration tests on circuit boards of different shapes requires the fabrication of specialized test fixtures, thus affecting the test schedule and reducing efficiency.

[0003] Therefore, it is necessary to design a circuit board clamping device for vibration testing that can adapt to circuit boards of different sizes, shapes, and thicknesses, and solve the above problems to ensure the stability and reliability of the circuit board during the test. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model aims to provide a circuit board clamping device for vibration testing. By setting multiple horizontal and vertical intersecting grooves on the adapter base and setting multiple height-adjustable clamping components that are slidably connected to the adapter base, the structure has been optimized. This allows the utility model to achieve precise positioning by changing the position of the clamping components within the grooves, ensuring stable clamping and preventing displacement and loosening. It can not only fix circuit boards of different shapes, sizes, and thicknesses, but also test multiple circuit boards simultaneously, improving testing efficiency.

[0005] This utility model is achieved through the following technical solution: A circuit board clamping device for vibration testing includes: an adapter base and multiple clamping assemblies, the clamping assemblies being arranged in sections on the adapter base to form multiple test areas; the adapter base is provided with multiple sliding grooves; each sliding groove has first positioning holes evenly distributed on its inner bottom for fixing the clamping assemblies; each clamping assembly includes a slider, a clamping arm, a first positioning screw, a second positioning screw, and a spring; the slider is slidably disposed in a corresponding sliding groove and fixed to the sliding groove through the first positioning holes; the slider includes an integrally connected horizontal part and a vertical part; the clamping arm... The first positioning screw is positioned above the slider; the upper part of the first positioning screw abuts against the first end of the clamping arm via a first nut, and the lower part of the first positioning screw is threadedly connected to the first end of the horizontal part; the second positioning screw is located inside the vertical part and a spring is sleeved on the second positioning screw; the upper part of the second positioning screw passes through the second end of the clamping arm and extends above the clamping arm and is locked by a second nut, and the lower part of the second positioning screw is threadedly connected to the second end of the horizontal part; a gap for placing the circuit board is provided between the upper end face of the vertical part and the lower end face of the second end of the clamping arm.

[0006] Preferably, the multiple grooves are perpendicular to each other and arranged in a grid-like structure.

[0007] Preferably, the test area is provided in multiple groups, and the number of clamping components that make up a single test area is set to four, and the second end of the clamping arm in a single test area is facing the circuit board.

[0008] Preferably, the first end of the horizontal part is provided with a first threaded hole, and the lower part of the first positioning screw is threadedly fixedly connected to the first threaded hole; the second end of the horizontal part is provided with a second threaded hole, and the lower part of the second positioning screw is threadedly fixedly connected to the second threaded hole; the middle part of the horizontal part is provided with a second positioning hole.

[0009] Preferably, the slider is fixedly connected to the corresponding first positioning hole at a preset position in the groove by an internal hexagon screw.

[0010] Preferably, both the first positioning screw and the second positioning screw are vertically arranged between the clamping arm and the horizontal part, and are parallel to each other with the vertical part.

[0011] Preferably, the preset height of the clamping arm is adjusted by the second positioning screw, the height of the second positioning screw is adjusted by rotating the second nut, the height of the first positioning screw is adjusted by rotating the first nut, and the height of the first positioning screw matches the height of the second positioning screw.

[0012] Preferably, the height of the gap is set to be equal to the thickness of the circuit board.

[0013] Preferably, a third positioning hole is provided at the edge of the adapter base, and the adapter base and the vibration test bench are fixedly connected through the third positioning hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model sets up multiple clamping components that are slidably connected to the adapter base, and sets up multiple horizontal and vertical intersecting slide grooves. By changing the position of the clamping components in the slide grooves, precise positioning can be achieved, which can fix circuit boards of different shapes and sizes, and can also enable simultaneous testing of multiple circuit boards.

[0015] 2. This utility model, by setting a first positioning screw, a second positioning screw, and a spring, adjusts the height of the clamping arm, which not only enables the clamping and fixing of circuit boards of different thicknesses and improves the stability of the clamping, but also balances the force on the clamping arm during the application of vibration stress through the elastic action of the spring, thereby effectively preventing the circuit board from loosening and displaced due to vibration, and ensuring that the vibration stress can be rigidly and accurately transmitted to the circuit board assembly.

[0016] 3. This utility model has a reasonable design, compact structure, and facilitates the installation and disassembly of circuit boards of various shapes, making it suitable for installation on various vibration tables. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the circuit board clamping device for vibration testing according to this utility model; Figure 2 This is one of the structural schematic diagrams of the clamping mechanism of this utility model; Figure 3 This is the second schematic diagram of the clamping mechanism of this utility model; Figure 4 This is a schematic diagram of the adapter base of this utility model.

[0018] Explanation of markings in the diagram: 1. Adapter base; 2. First positioning hole; 3. Slide groove; 4. Clamping assembly; 5. Slider; 6. Clamping arm; 7. First positioning screw; 8. First nut; 9. Second positioning screw; 10. Spring; 11. Second nut; 12. Socket head screw; 13. Second positioning hole; 14. Third positioning hole; 16. Horizontal part; 17. Vertical part. Detailed Implementation

[0019] To fully describe the technical content, structural features, objectives, and beneficial effects of this utility model, a detailed description will be provided below in conjunction with the accompanying drawings.

[0020] This utility model provides a circuit board clamping device for vibration testing, such as... Figures 1 to 4 As shown, it includes an adapter base 1 and multiple clamping components 4. Multiple third positioning holes 14 are provided on the edge of the adapter base 1, and the adapter base 1 and the vibration test bench are fixedly connected at the third positioning holes 14 by fastening bolts.

[0021] The adapter base 1 has multiple sliding grooves 3, and the inner bottom of each sliding groove 3 is evenly distributed with first positioning holes 2 for fixing the clamping assembly 4. Preferably, the sliding grooves 3 referred to in this invention are configured as three transverse sliding grooves and three longitudinal sliding grooves. Depending on the shape and size of the circuit board and the size of the test bench, more sliding grooves can be provided, allowing for simultaneous testing of multiple circuit boards. The transverse and longitudinal sliding grooves are arranged perpendicularly to each other, forming a grid structure that provides various circuit board testing areas to accommodate the installation requirements of circuit boards of different sizes.

[0022] In this invention, multiple clamping components 4 are configured. According to testing requirements, these multiple clamping components 4 are arranged in different areas on the adapter base 1 to form multiple test zones. Preferably, four clamping components 4 constitute a single test zone to ensure the stability of the circuit board clamping. Furthermore, the second end of the clamping arm 6 of each clamping component 4 in a single test zone faces the circuit board. Specifically, the preset position of the slider 5 of each clamping component 4 in its respective groove 3 is determined according to the specifications and shape of the circuit board.

[0023] Each clamping assembly 4 includes a slider 5, a clamping arm 6, a first positioning screw 7, a second positioning screw 9, and a spring 10. The slider 5 is located at the bottom of the clamping assembly 4, and multiple sliders 5 are slidably disposed in corresponding longitudinal and transverse slide grooves and fixed to the slide groove 3 through the first positioning hole 2. Under the action of the slider 5, the clamping assembly 4 can move freely along the direction of its longitudinal or transverse slide groove to adjust the position of the clamping assembly 4 according to the size of the circuit board.

[0024] After the position of the slider 5 is determined, the slider and the slide groove 3 are fixedly connected by the internal hex screw 12 at the second positioning hole 13 on the slider and the corresponding first positioning hole 2 on the slide groove 3, thereby achieving precise positioning of the clamping component 4 on the adapter base 1.

[0025] The clamping arm 6 is positioned above the slider 5 to clamp the circuit board. The preset height of the clamping arm 6 is determined according to the thickness of the circuit board and is adjusted by the second positioning screw 9. By adjusting the opening degree of the clamping arm 6, the clamping force can be adjusted to adapt to circuit boards of different thicknesses.

[0026] Specifically, the upper part of the first positioning screw 7 abuts against the first end of the clamping arm 6 via the first nut 8, and the lower part of the first positioning screw 7 is threadedly connected to the first end of the horizontal part 16 of the slider 5. By rotating the first nut 8, the extension height of the first positioning screw 7 is adjusted to adapt to changes in the height of the clamping arm 6 and to limit the range of movement of the clamping arm 6. Preferably, the first nut 8 is provided in this invention to prevent the first positioning screw 7 from loosening during vibration, thereby ensuring that the height of the clamping arm 6 remains stable.

[0027] The second positioning screw 9 is located inside the vertical part 17. The upper part of the second positioning screw 9 passes through the second end of the clamping arm 6. The second end of the clamping arm 6 is provided with a through hole for the second positioning screw 9 to pass through. The upper part of the second positioning screw 9 extends out of the clamping arm 6 and is locked to the upper end face of the second end of the clamping arm 6 by the second nut 11. The lower part of the second positioning screw 9 is threadedly connected to the second end of the horizontal part 16. This arrangement allows the second positioning screw 9 to be screwed into the second threaded hole to achieve a fixed connection with the slider. Moreover, the height of the second positioning screw 9 can be adjusted by rotating the tightness of the second nut 11, so as to adjust the clamping force of the clamping arm on the circuit board according to the circuit board with different thicknesses and hardnesses.

[0028] A spring 10 is fitted onto the second positioning screw 9, and the spring 10 is positioned between the clamping arm 6 and the horizontal part 16. It is used to lift the clamping arm 6 and adapt to changes in its height, and has the function of absorbing vibration. The elasticity of the spring 10 can balance the force on the clamping arm 6 during vibration testing, thereby effectively preventing the circuit board from loosening or shifting due to vibration.

[0029] In the embodiments of this utility model, the slider 5 is configured with an L-shaped structure, and the slider 5 includes a horizontal part 16 and a vertical part 17 that are integrally connected.

[0030] A second positioning hole 13 is provided in the middle of the horizontal part 16. An internal hexagon screw 12 is provided in the second positioning hole 13 and the first positioning hole 2 corresponding to the second positioning hole 13. The slider 5 and the slide groove 3 are fixedly connected by tightening the internal hexagon screw 12 from above into the first positioning hole 2.

[0031] The first end of the horizontal part 16 is provided with a first threaded hole, and the lower part of the first positioning screw 7 is threadedly fixedly connected to the first threaded hole. The second end of the horizontal part 16 is provided with a second threaded hole, and the lower part of the second positioning screw 9 is threadedly fixedly connected to the second threaded hole. The first positioning screw 7 and the second positioning screw 9 are both vertically arranged between the clamping arm 6 and the horizontal part 16 and are both parallel to the vertical part 17.

[0032] The height of the second positioning screw 9 is adjusted by rotating the second nut 11, and the height of the first positioning screw 7 is adjusted by rotating the first nut 8, and the height of the first positioning screw 7 matches the height of the second positioning screw 9.

[0033] The second end of the clamping arm 6 serves as a clamping end for clamping the circuit board. Here, the second end of the horizontal portion 16 refers to the end near the vertical portion 17. A gap for clamping the circuit board is provided between the upper end face of the vertical portion 17 and the lower end face of the second end of the clamping arm 6. The size of the gap is set to be equal to the thickness of the circuit board.

[0034] The specific embodiments of this utility model are further described below: First, the clamping assembly 4 is installed on the adapter base 1. Multiple clamping assemblies 4 are installed in each horizontal and vertical slide groove. The second end of the clamping arm 6 of the clamping assembly 4 is oriented to form a test area on the adapter base 1 that can clamp a circuit board or clamp multiple circuit boards at the same time, so as to realize the layout for testing multiple circuit boards at the same time.

[0035] Circuit boards come in various shapes, commonly square, rectangular, or round, and can all be clamped by four clamping arms 6. For testing on irregularly shaped circuit boards, two or three clamping arms 6 can be used to clamp them. Simply move the slider to change the combination layout of the clamping components 4 to accurately position them according to the shape and specifications of the circuit board. This makes the operation convenient and the work efficiency high.

[0036] Different circuit board specifications require different thicknesses; therefore, the height of the clamping arm 6 is adjusted accordingly. Rotating the second positioning screw 9 upwards causes the spring 10 to lift the clamping arm 6, at which point the clamping assembly 4 is in a relaxed state, ready for installing or removing the circuit board. When fixing the circuit board, first properly place the mounting portion of the circuit board under test on the upper end of the vertical portion 17 of each slider 5. By rotating the second nut 11 downwards, the height of the clamping arm 6 is lowered to match the thickness of the circuit board under test. Tightening the second nut 11 achieves initial locking of the circuit board under test. Further, by rotating the first nut 8 upwards, while maintaining thread engagement with the first positioning screw, the top of the first nut 8 rises to abut against the bottom of the first end of the clamping arm 6. This, in conjunction with the change in the height of the clamping arm 6, applies a reverse torque to the second positioning screw 9, thereby achieving a firm clamping of the circuit board assembly and preventing the circuit board under test from loosening due to screw loosening during vibration.

[0037] After fixing the circuit board mounting position of each clamping component 4, adjust the position of each clamping component 4 in the horizontal and vertical slide grooves as appropriate, and then tighten the internal hex screws 12 on the slider one by one to lock and fix the clamping component 4 to the adapter base 1.

[0038] Next, install the assembled adapter base 1 onto the vibration table. This completes the secure fixation of the test circuit board assembly on the vibration table. Start the vibration table to conduct vibration tests on the test circuit board assembly.

[0039] The circuit board clamping device for vibration testing provided in this embodiment can fix circuit boards of different shapes and sizes for testing by changing the position of the clamping component 4 in the adapter base 1 and changing the relative distance of different clamping arms 6, thereby facilitating testing.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A circuit board clamping device for vibration testing, characterized in that, It includes: transfer The base and multiple clamping components are arranged in different areas on the adapter base to form multiple test zones. The adapter base is provided with multiple slide grooves; each slide groove has a first positioning hole evenly distributed on its inner bottom for fixing the clamping component; Each clamping assembly includes a slider, a clamping arm, a first positioning screw, a second positioning screw, and a spring. The slider is slidably disposed in a corresponding groove and fixed to the groove through a first positioning hole. The slider includes an integrally connected horizontal part and a vertical part. The clamping arm is disposed above the slider. The upper part of the first positioning screw abuts against the first end of the clamping arm through a first nut, and the lower part of the first positioning screw is threadedly connected to the first end of the horizontal part. The second positioning screw is located inside the vertical part and a spring is sleeved on the second positioning screw. The upper part of the second positioning screw passes through the second end of the clamping arm and extends above the clamping arm and is locked by a second nut. The lower part of the second positioning screw is threadedly connected to the second end of the horizontal part. A gap for placing a circuit board is provided between the upper end face of the vertical part and the lower end face of the second end of the clamping arm.

2. The circuit board clamping device for vibration testing according to claim 1, characterized in that, Multiple chutes are perpendicular to each other and arranged in a grid-like structure.

3. The vibration test circuit board clamping device according to claim 1, characterized by The test area is set up in multiple groups, and the number of clamping components that make up a single test area is set to four. The second end of the clamping arm in a single test area is facing the circuit board.

4. The circuit board clamping device for vibration testing according to claim 1, characterized in that, The first end of the horizontal section is provided with a first threaded hole, and the lower part of the first positioning screw is threadedly fixedly connected to the first threaded hole; the second end of the horizontal section is provided with a second threaded hole, and the lower part of the second positioning screw is threadedly fixedly connected to the second threaded hole; the middle part of the horizontal section is provided with a second positioning hole.

5. The circuit board clamping device for vibration testing according to claim 3, characterized in that, The slider is fixedly connected to the corresponding first positioning hole at the preset position in the slide groove by an internal hex screw.

6. The vibration test circuit board clamping device according to claim 1, wherein Both the first positioning screw and the second positioning screw are vertically arranged between the clamping arm and the horizontal part, and are parallel to each other with the vertical part.

7. The circuit board clamping device for vibration testing according to claim 1, characterized in that, The preset height of the clamping arm is adjusted by the second positioning screw, the height of which is adjusted by rotating the second nut, and the height of the first positioning screw is adjusted by rotating the first nut. The heights of the first and second positioning screws are matched.

8. The circuit board clamping device for vibration testing according to claim 1, characterized in that, The height of the gap is set to be equal to the thickness of the circuit board.

9. The vibration test circuit board clamping device according to Claim 1, wherein A third positioning hole is provided at the edge of the adapter base, and the adapter base and the vibration test bench are fixedly connected through the third positioning hole.

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