PCB vibration test clamp

Abstract

The utility model discloses a PCB vibration test clamp which comprises two groups of transverse adjusting assemblies, two groups of longitudinal adjusting assemblies and a PCB clamp, the longitudinal adjusting assemblies are arranged on the transverse adjusting assemblies to realize position adjustment of the longitudinal adjusting assemblies in the transverse direction, and the PCB clamp is arranged on the transverse adjusting assemblies. The PCB clamp is arranged on the longitudinal adjusting assembly and used for clamping and fixing a PCB on the longitudinal adjusting assembly, and the longitudinal adjusting assembly is used for longitudinally adjusting the position of the PCB clamp; the four sets of PCB clamps are symmetrically arranged, each PCB clamp comprises an upper clamping plate, and the upper clamping plates are rotationally arranged on the longitudinal adjusting assemblies and used for clamping PCBs to the longitudinal adjusting assemblies. The position of the PCB clamp used for clamping and fixing the PCB can be adjusted, the positions of the four sets of PCB clamps can be independently adjusted, the PCB clamp can be compatible with PCBs of different sizes and widths, electronic elements on the PCBs can be avoided, use is easy, the PCBs can be firmly fixed, meanwhile, normal work of the PCBs is not affected, and mounting and dismounting are convenient.

Description

Technical Field

[0001] The utility model relates to a vibration test fixture for a PCB board, belonging to the technical field of PCB board test fixtures. Background Art

[0002] A PCB board is a printed circuit board, which is a board structure used to support and connect electronic components, and realizes the functions of circuit design through mechanical support and electrical connection.

[0003] The PCB board is an indispensable part of electronic products. In the actual use process, the PCB board will experience various mechanical vibrations and impacts. In order to ensure the reliability of the product during transportation, installation and use, it is necessary to conduct vibration tests on the PCB board to evaluate the structural integrity and functional stability of the PCB board in a vibration environment. Therefore, there is an urgent need for a test fixture that can perform vibration tests on the PCB board. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a test fixture that can clamp a PCB board for vibration testing to evaluate the structural integrity and functional stability of the PCB board in a vibration environment, thereby ensuring the reliability of the product during transportation, installation and use.

[0005] To achieve the above technical purpose and technical effect, the present application is realized through the following technical solutions:

[0006] A vibration test fixture for a PCB board includes a lateral adjustment component, a longitudinal adjustment component and a PCB board fixture. At least one group of the lateral adjustment component and the longitudinal adjustment component is provided. The longitudinal adjustment component is arranged on the lateral adjustment component to realize the lateral position adjustment of the longitudinal adjustment component. The PCB board fixture is arranged on the longitudinal adjustment component for clamping and fixing the PCB board on the longitudinal adjustment component, and the longitudinal adjustment component is used for longitudinally adjusting the position of the PCB board fixture;

[0007] The PCB board fixture includes an upper clamping plate, and the upper clamping plate is rotatably arranged on the longitudinal adjustment component for clamping the PCB board on the longitudinal adjustment component.

[0008] Preferably, the PCB board fixture further includes a lower clamping plate and an insertion shaft. The lower clamping plate is fixedly connected to the top of the longitudinal adjustment component. The insertion shaft penetrates through the lower clamping plate and the upper clamping plate, and the upper clamping plate is rotatably arranged on the lower clamping plate through the insertion shaft.

[0009] Further, a torsion spring is sleeved on the outer wall of the insertion shaft. One end of the torsion spring is fixedly connected to the upper clamping plate, and the other end is fixedly connected to the lower clamping plate.

[0010] Preferably, the lateral adjustment assembly includes a first track, a first slider, an extrusion screw, a first disc, and a first locking nut. The first slider is slidably clamped on the first track. The extrusion screw is threadedly connected to the outer wall of one side of the first slider, and one end of the extrusion screw penetrates through the first slider and can abut against the outer wall of the first track. The other end of the extrusion screw extends out of the first slider and is sleeved and fixed with the first disc. The first locking nut is threadedly connected to the outer wall of the extrusion screw and is located between the first disc and the side wall of the first slider.

[0011] Further, a plurality of mounting holes are uniformly spaced along the length direction on the first track for connecting an external test bench.

[0012] Further, the longitudinal adjustment assembly is arranged on the first slider. The longitudinal adjustment assembly includes a second track, a second slider, a fixing screw, a second disc, and a second locking nut. The second track is fixedly connected to the first slider. The second slider is slidably clamped on the second track. The fixing screw is threadedly connected to the outer wall of one side of the second slider, and one end of the fixing screw penetrates through the second slider and can abut against the outer wall of the second track. The other end of the fixing screw extends out of the second slider and is sleeved and fixed with the second disc. The second locking nut is threadedly connected to the outer wall of the fixing screw and is located between the second disc and the side wall of the second slider.

[0013] Furthermore, two sets of the lateral adjustment assembly and the longitudinal adjustment assembly are provided. The first tracks of the two sets of the lateral adjustment assembly are arranged in parallel at intervals. Two first sliders are arranged on each first track. The two sets of the longitudinal adjustment assembly are arranged in parallel at intervals. The second track is fixedly connected to two corresponding first sliders on the two first tracks. Two second sliders are arranged on each second track. A PCB board fixture is arranged on each second slider. The PCB board fixtures on the two sets of the longitudinal adjustment assembly are arranged facing each other.

[0014] A PCB board vibration test fixture provided by the present utility model has the following advantages:

[0015] 1. The utility model provides a vibration test fixture for a PCB board. By rotating the first disc to squeeze the screw rod, the screw rod is rotated outward, so that one end inside the screw rod is separated from the contact with the first track, and the position of the first slider on the first track can be adjusted. The longitudinal adjustment component and the PCB board fixture are fixedly installed on the top of the first slider, so that the position of the PCB board fixture for clamping and fixing the PCB board can be adjusted to adapt to PCB boards of different widths. After adjustment, by rotating the first disc to squeeze the screw rod, the screw rod is rotated and inserted into one side of the first slider, so that one end of the screw rod abuts against the first track, and then the first locking nut is rotated to fit the outside of the first slider to lock the screw rod, thereby fixing the first slider on the first track, which is convenient for maintaining stability during subsequent vibration tests.

[0016] 2. The utility model provides a vibration test fixture for a PCB board. By rotating the second disc to fix the screw rod, the screw rod is rotated outward, so that one end inside the screw rod is separated from the contact with the second track, and the position of the second slider on the second track can be adjusted. The PCB board fixture is fixedly installed on the top of the second slider, so that the position of the PCB board fixture for clamping and fixing the PCB board can be adjusted to adapt to PCB boards of different lengths. After adjustment, by rotating the second disc to fix the screw rod, the screw rod is rotated and inserted into one side of the second slider, so that one end of the screw rod abuts against the second track, and then the second locking nut is rotated to fit the outside of the second slider to lock the screw rod, thereby fixing the second slider on the second track, which is convenient for maintaining stability during subsequent vibration tests. And the position of the PCB board fixture can be adjusted under the action of the longitudinal adjustment component to avoid the circuit components on the PCB board and prevent the PCB board from being damaged during clamping.

[0017] 3. The utility model provides a vibration test fixture for a PCB board. By flipping the upper clamping plate through the insertion shaft, and then placing a part of the PCB board between the lower clamping plate and the upper clamping plate. After loosening the upper clamping plate, under the action of the torsion spring, the upper clamping plate is driven to close, so as to cooperate with the lower clamping plate to clamp and fix the PCB board. And there are four groups of PCB board fixtures, all of which can be adjusted independently. This vibration test fixture for a PCB board can be compatible with PCB boards of different sizes, can avoid the electronic components on the PCB board, is simple to use, ensures that the PCB board can be firmly fixed, and does not affect the normal operation of the PCB board at the same time, which is convenient for installation and disassembly. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a vibration test fixture for a PCB board according to the utility model;

[0019] Figure 2 is an exploded structural diagram of a vibration test fixture for a PCB board according to the utility model;

[0020] Figure 3Schematic diagram of the transverse adjustment assembly of the utility model;

[0021] Figure 4 Schematic diagram of the longitudinal adjustment assembly of the utility model;

[0022] Figure 5 Schematic diagram of the PCB board fixture of the utility model.

[0023] In the figure:

[0024] 1 - Transverse adjustment assembly; 11 - First track; 111 - Mounting hole; 12 - First slider; 13 - Extrusion screw; 14 - First disc; 15 - First locking nut; 2 - Longitudinal adjustment assembly; 21 - Second track; 22 - Second slider; 23 - Fixed screw; 24 - Second disc; 25 - Second locking nut; 3 - PCB board fixture; 31 - Upper clamping plate; 32 - Lower clamping plate; 33 - Insertion shaft; 34 - Torsion spring. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1:

[0027] Referring to Figure 1 and Figure 2 , a PCB board vibration test fixture includes a transverse adjustment assembly 1, a longitudinal adjustment assembly 2, and a PCB board fixture 3. At least one group of the transverse adjustment assembly 1 and the longitudinal adjustment assembly 2 is provided. The longitudinal adjustment assembly 2 is installed on the transverse adjustment assembly 1 to realize the lateral position adjustment of the longitudinal adjustment assembly 2. The PCB board fixture 3 is installed on the longitudinal adjustment assembly 2 for clamping and fixing the PCB board on the longitudinal adjustment assembly 2. The longitudinal adjustment assembly 2 is used to longitudinally adjust the position of the PCB board fixture 3. The combined use of the transverse adjustment assembly 1 and the longitudinal adjustment assembly 2 can adapt to PCB boards of different widths while avoiding the circuit components on the PCB board, and prevent the PCB board from being damaged during clamping.

[0028] Referring to Figure 1 and Figure 2 , the PCB board fixture 3 includes an upper clamping plate 31, and the upper clamping plate 31 is rotatably installed on the longitudinal adjustment assembly 2 for clamping the PCB board on the longitudinal adjustment assembly 2.

[0029] Embodiment 2:

[0030] Referring toFigures 1 - 5 , on the basis of Embodiment 1, the following improvements are made in this embodiment. Specifically, the PCB board fixture 3 further includes a lower clamping plate 32 and a plug shaft 33. The lower clamping plate 32 is fixedly installed on the top of the longitudinal adjustment assembly 2. The lower clamping plate 32 can be fixed by welding or by bolts. In this embodiment, the lower clamping plate 32 is preferably fixed by bolts. The plug shaft 33 passes through the lower clamping plate 32 and the upper clamping plate 31, and the upper clamping plate 31 is rotatably installed on the lower clamping plate 32 through the plug shaft 33.

[0031] Furthermore, the middle part of the upper clamping plate 31 is open to expose the plug shaft 33. A torsion spring 34 is sleeved and installed on the outer wall of the middle part of the upper clamping plate 31 where the plug shaft 33 is located. One end of the torsion spring 34 is fixedly connected to the upper clamping plate 31, and the other end is fixedly connected to the lower clamping plate 32. In this embodiment, the upper clamping plate 31 is flipped through the plug shaft 33, and then a part of the PCB board is placed between the lower clamping plate 32 and the upper clamping plate 31. After the upper clamping plate 31 is released, under the action of the torsion spring 34, the upper clamping plate 31 is driven to close, so as to cooperate with the lower clamping plate 32 to clamp and fix the PCB board. It is simple to use, ensures that the PCB board can be firmly fixed, and does not affect the normal operation of the PCB board, facilitating installation and disassembly.

[0032] Embodiment Three:

[0033] Refer to Figures 1 - 3 , on the basis of Embodiment 1, the following improvements are made in this embodiment. Specifically, the transverse adjustment assembly 1 includes a first track 11, a first slider 12, an extrusion screw 13, a first round disk 14 and a first locking nut 15. The first slider 12 is slidably clamped on the first track 11, and the longitudinal adjustment assembly 2 is installed and fixed on the first slider 12. The extrusion screw 13 is threadedly connected to the outer wall of one side of the first slider 12, and one end of the extrusion screw 13 passes through the first slider 12 and can abut against the outer wall of the first track 11. The other end of the extrusion screw 13 extends out of the first slider 12 and is sleeved and fixed with a first round disk 14. The first locking nut 15 is threadedly connected to the outer wall of the extrusion screw 13 and is located between the first round disk 14 and the side wall of the first slider 12. A plurality of mounting holes 111 are evenly spaced along the length direction on the first track 11 for connecting an external test bench.

[0034] In this embodiment, by rotating the first disc 14 to squeeze the screw 13, the screw 13 is rotated outward, so that one end inside the screw 13 is disengaged from the contact with the first track 11, and the position of the first slider 12 on the first track 11 can be adjusted. The longitudinal adjustment assembly 2 and the PCB board clamp 3 are fixedly installed on the top of the first slider 12, so that the position of the PCB board clamp 3 for clamping and fixing the PCB board can be adjusted to adapt to PCB boards of different widths. After adjustment, the screw 13 is rotated by rotating the first disc 14 until the screw 13 abuts against the side wall of the first slider 12, and then the first locking nut 15 is rotated to fit the outside of the first slider 12 to lock the screw 13, thereby fixing the first slider 12 on the first track 11 to facilitate maintaining stability during subsequent vibration tests.

[0035] Referring to Figures 1 - 4 , in a further embodiment, the longitudinal adjustment assembly 2 includes a second track 21, a second slider 22, a fixing screw 23, a second disc 24 and a second locking nut 25. The second track 21 is fixedly installed on the first slider 12 by bolts. The second slider 22 is slidably clamped on the second track 21. The PCB board clamp 3 is fixedly installed on the upper surface of the second slider 22. The fixing screw 23 is threadedly connected to the outer wall of one side of the second slider 22, and one end of the fixing screw 23 passes through the second slider 22 and can abut against the outer wall of the second track 21. The other end of the fixing screw 23 extends out of the second slider 22 and is sleeved and fixed with the second disc 24. The second locking nut 25 is threadedly connected to the outer wall of the fixing screw 23 and is located between the second disc 24 and the side wall of the second slider 22.

[0036] In this embodiment, by rotating the fixing screw 23 with the second disc 24, the fixing screw 23 is rotated outward, so that one end inside the fixing screw 23 is disengaged from the contact with the second track 21, and then the position of the second slider 22 on the second track 21 is adjusted. The PCB board clamp 3 is fixedly installed on the top of the second slider 22, so that the position of the PCB board clamp 3 for clamping and fixing the PCB board can be adjusted to adapt to PCB boards of different lengths. After adjustment, the screw 13 is rotated by rotating the second disc 24 until the screw 13 abuts against the side wall of the first slider 12, and then the second locking nut 25 is rotated to fit the outside of the second slider 22 to lock the fixing screw 23, thereby fixing the second slider 22 on the second track 21 to facilitate maintaining stability during subsequent vibration tests. And the position of the PCB board clamp 3 can be adjusted under the action of the longitudinal adjustment assembly 2 to avoid the circuit elements on the PCB board and prevent the PCB board from being damaged during clamping.

[0037] Embodiment 4:

[0038] Referring to Figure 1 and Figure 2, on the basis of Embodiment 3, the following improvements are made in this embodiment. Specifically, two groups of the lateral adjustment assemblies 1 and the longitudinal adjustment assemblies 2 are installed. The first tracks 11 of the two groups of the lateral adjustment assemblies 1 are arranged in parallel at intervals, and two first sliders 12 are installed on each first track 11. The two groups of the longitudinal adjustment assemblies 2 are arranged in parallel at intervals. The second tracks 21 are fixedly connected to two corresponding first sliders 12 on the two first tracks 11. Two second sliders 22 are installed on each second track 21, and a PCB board fixture 3 is installed on each second slider 22, and the PCB board fixtures 3 on the two groups of the longitudinal adjustment assemblies 2 face each other.

[0039] In this embodiment, four groups of the PCB board fixtures 3 are installed and their positions can be adjusted independently. This PCB board vibration test fixture can be compatible with PCB boards of different sizes, can avoid the electronic components on the PCB board, is simple to use, ensures that the PCB board can be firmly fixed, and does not affect the normal operation of the PCB board, and is convenient for installation and disassembly.

[0040] The above is only the preferred embodiment of the present invention, and does not limit the present invention in any form and essence. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the premise of the present invention, several improvements and supplements can still be made, and these improvements and supplements should also be regarded as the protection scope of the present invention. For those skilled in the art, without departing from the spirit and scope of the present invention, any equivalent changes made by using the technical content disclosed above, such as slight changes, modifications and evolutions, are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments according to the substantial technology of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A vibration test fixture for a PCB board, characterized in that, It includes a lateral adjustment component (1), a longitudinal adjustment component (2) and a PCB board fixture (3). At least one set of the lateral adjustment component (1) and the longitudinal adjustment component (2) is provided. The longitudinal adjustment component (2) is arranged on the lateral adjustment component (1) to realize the lateral position adjustment of the longitudinal adjustment component (2). The PCB board fixture (3) is arranged on the longitudinal adjustment component (2) for clamping and fixing the PCB board on the longitudinal adjustment component (2), and the longitudinal adjustment component (2) is used for longitudinally adjusting the position of the PCB board fixture (3). The PCB board fixture (3) includes an upper clamping plate (31). The upper clamping plate (31) is rotatably arranged on the longitudinal adjustment component (2) for clamping the PCB board on the longitudinal adjustment component (2).

2. The PCB board vibration test fixture according to claim 1, wherein, The PCB board fixture (3) further includes a lower clamping plate (32) and an insertion shaft (33). The lower clamping plate (32) is fixedly connected to the top of the longitudinal adjustment component (2). The insertion shaft (33) passes through the lower clamping plate (32) and the upper clamping plate (31), and the upper clamping plate (31) is rotatably arranged on the lower clamping plate (32) through the insertion shaft (33).

3. The PCB board vibration test fixture according to claim 2, characterized in that, A torsion spring (34) is sleeved on the outer wall of the insertion shaft (33). One end of the torsion spring (34) is fixedly connected to the upper clamping plate (31), and the other end is fixedly connected to the lower clamping plate (32).

4. The vibration test fixture for a PCB board according to claim 1, characterized in that, The lateral adjustment component (1) includes a first track (11), a first slider (12), an extrusion screw (13), a first disc (14) and a first locking nut (15). The first slider (12) is slidably clamped on the first track (11). The extrusion screw (13) is threadedly connected to the outer wall of one side of the first slider (12), and one end of the extrusion screw (13) passes through the first slider (12) and can abut against the outer wall of the first track (11). The other end of the extrusion screw (13) extends out of the first slider (12) and is sleeved and fixed with the first disc (14). The first locking nut (15) is threadedly connected to the outer wall of the extrusion screw (13) and is located between the first disc (14) and the side wall of the first slider (12).

5. The PCB board vibration test fixture according to claim 4, wherein, A plurality of mounting holes (111) are evenly spaced along the length direction on the first track (11) for connecting an external test bench.

6. The PCB board vibration test fixture according to claim 4, wherein The longitudinal adjustment component (2) is arranged on the first slider (12). The longitudinal adjustment component (2) includes a second track (21), a second slider (22), a fixing screw (23), a second disc (24) and a second locking nut (25). The second track (21) is fixedly connected to the first slider (12). The second slider (22) is slidably clamped on the second track (21). The fixing screw (23) is threadedly connected to the outer wall of one side of the second slider (22), and one end of the fixing screw (23) penetrates through the second slider (22) and can abut against the outer wall of the second track (21). The other end of the fixing screw (23) extends out of the second slider (22) and is sleeved and fixed with the second disc (24). The second locking nut (25) is threadedly connected to the outer wall of the fixing screw (23) and is located between the second disc (24) and the side wall of the second slider (22).

7. The PCB board vibration test fixture according to claim 6, wherein There are two sets of the transverse adjustment component (1) and the longitudinal adjustment component (2). The first tracks (11) of the two sets of the transverse adjustment component (1) are arranged in parallel at intervals. Two first sliders (12) are arranged on each first track (11). The two sets of the longitudinal adjustment component (2) are arranged in parallel at intervals. The second track (21) is fixedly connected to two first sliders (12) arranged correspondingly on the two first tracks (11). Two second sliders (22) are arranged on each second track (21). A PCB board fixture (3) is arranged on each second slider (22). The PCB board fixtures (3) on the two sets of the longitudinal adjustment component (2) are arranged facing each other.

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