Adjustable PCB (Printed Circuit Board) test fixture

Abstract

The utility model discloses an adjustable PCB (printed circuit board) test fixture, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a supporting plate, a rotating plate is arranged above the supporting plate, the surface of the rotating plate is provided with a clamping mechanism for clamping and limiting a PCB, the top end of the bottom plate is fixedly provided with a driving mechanism for driving the rotating plate to rotate, and the rotating plate is fixedly connected with the driving mechanism. The clamping mechanism can be driven by the driving mechanism to clamp and limit a PCB, a supporting assembly is installed in the center of the upper surface of the rotating plate and comprises a containing plate elastically installed on the rotating plate, and the clamping mechanism comprises two sets of first clamping blocks which are symmetrical to each other. According to the adjustable PCB test fixture provided by the utility model, the arrangement of the inclined surfaces on the first clamping block and the second clamping block is matched with the placement plate, so that the periphery and the upper end of the PCB can be conveniently limited, the PCB is prevented from bending, arching or inclining during clamping, the clamping effect is improved, and the accuracy of the detection effect is ensured to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and in particular to an adjustable PCB board testing fixture. Background Technology

[0002] PCB board, also known as printed circuit board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical connections. Because it is made using electronic printing technology, it is called a "printed" circuit board. To ensure the normal use of PCB boards, they need to be tested using testing fixtures after production.

[0003] The applicant's research revealed that in traditional technologies, it is inconvenient to adjust the test fixture according to different PCB sizes when testing PCBs. Furthermore, the PCB is usually clamped only on both sides, not all four sides. For example, the adjustable PCB functional test fixture announced in application number 202323640717.6, through the cooperation of its components, facilitates adjustment of the test fixture according to different PCB sizes and can clamp all four sides of the PCB, avoiding deviations during PCB positioning. While this solution represents an improvement, excessive clamping force can cause the PCB to bend and arch, preventing it from adhering properly to the contact electrodes of the testing device. This can lead to poor or broken circuit contact during PCB testing, affecting the testing results. Additionally, clamping the PCB requires rotating two sets of turntables and the second threaded rod, making the operation cumbersome and inconvenient.

[0004] Therefore, the applicant proposes an adjustable PCB board testing fixture to solve the problem. Utility Model Content

[0005] This invention provides an adjustable PCB board testing fixture, which solves the problems mentioned in the background.

[0006] To solve the above technical problems, this utility model provides an adjustable PCB board testing fixture, including a base plate, a support plate fixedly connected to the upper surface of the base plate, a rotating plate above the support plate, a clamping mechanism for clamping and limiting the PCB board on the surface of the rotating plate, a driving mechanism for rotating the rotating plate fixedly installed at the top of the base plate, the driving mechanism can drive the clamping mechanism to clamp and limit the PCB board, and a support assembly is installed at the center of the upper surface of the rotating plate, the support assembly including a placement plate elastically installed with the rotating plate;

[0007] The clamping mechanism includes two sets of mutually symmetrical first clamping blocks, and a mutually symmetrical second clamping block is provided between the two sets of first clamping blocks. One side surface of the first clamping block and the second clamping block are both inclined surfaces, and the inclined surfaces are provided with rubber pads.

[0008] Preferably, each of the two sets of first clamping blocks has a movable block on one side, and two sets of insert rods extending to the other side of the movable block are fixedly connected to one side surface of the first clamping block, with a first spring sleeved on the outer wall of the insert rod. Both sets of movable blocks and one side surface of the second clamping block are fixedly connected to sliders extending to the bottom of the rotating plate.

[0009] Preferably, the rotating plate has two sets of second inclined grooves symmetrically formed on its surface, and a first inclined groove formed on the surface of the rotating plate is symmetrically formed between the two sets of second inclined grooves. The slider is respectively sleeved on the inner wall of the first inclined groove and the second inclined groove.

[0010] Preferably, the upper surface of the support plate is provided with four sets of limiting blocks in a cross-shaped symmetrical arrangement, and the slider is slidably sleeved with the limiting blocks.

[0011] Preferably, four sets of circularly arranged arc-shaped blocks are fixedly connected to the upper surface of the support plate, and multiple sets of ball bearings that contact the bottom end of the rotating plate are movably fitted on the upper surface of the arc-shaped blocks. The four sets of arc-shaped blocks and the limiting blocks are arranged alternately.

[0012] Preferably, the driving mechanism includes a drive motor fixedly connected to the upper surface of the base plate, a mounting base fixedly mounted on the upper surface of the drive motor, a first bevel gear connected to the output end of the mounting base via a coupling, a second bevel gear rotatably connected to the base plate on one side of the first bevel gear, a transmission rod extending to the top of the second bevel gear fixedly connected to the top of the support plate, and the top of the transmission rod fixedly connected to the rotating plate.

[0013] Preferably, the lower surface of the placement plate is symmetrically fixedly connected with fixed rods extending to the bottom of the rotating plate, the top of the support plate is symmetrically fixedly connected with two sets of sleeves, the inner walls of the two sets of sleeves are fixedly installed with second springs fixedly connected to the bottom of the fixed rods, and the surface of the rotating plate is symmetrically provided with two sets of arc-shaped grooves, and the fixed rods are sleeved on the inner walls of the arc-shaped grooves.

[0014] Compared with related technologies, the adjustable PCB board testing fixture provided by this utility model has the following beneficial effects:

[0015] This utility model provides an adjustable PCB board testing fixture. By setting the inclined surfaces of the first and second clamping blocks and placing the plate, it is convenient to limit the PCB board around its perimeter and top, thereby preventing the PCB board from bending, arching, or tilting during clamping. This facilitates the testing of the PCB board, improves the clamping effect, and ensures the accuracy of the testing results to a certain extent.

[0016] This utility model provides an adjustable PCB board testing fixture. The drive mechanism, in conjunction with the rotating plate, drives the clamping mechanism to move, thereby facilitating the clamping of the PCB board. Only one set of drive motors is needed to provide power to the clamping mechanism, making it simple to operate and convenient to use. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural diagram of the overall structure of this utility model;

[0018] Figure 2 This is a second-view three-dimensional structural diagram of the overall structure of this utility model;

[0019] Figure 3 This is a cross-sectional three-dimensional structural diagram of the overall structure of this utility model;

[0020] Figure 4 This is a top view of the support plate structure of this utility model.

[0021] Figure 5 This is a three-dimensional schematic diagram of the rotating plate structure of this utility model from a bottom view;

[0022] Figure 6 This is a three-dimensional structural diagram of the first clamping block and the second clamping block of this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the disassembled support component of this utility model;

[0024] Figure 8 This is a top-view perspective view of the overall structure of the rotating plate of this utility model.

[0025] The following are the labeling elements in the diagram: 1. Base plate; 11. Support plate; 12. Rotating plate; 13. First inclined groove; 14. Second inclined groove; 15. Limiting block; 16. Arc block; 17. Ball bearing; 18. Arc groove; 2. Clamping mechanism; 21. Movable block; 22. First spring; 23. First clamping block; 24. Second clamping block; 25. Slider; 3. Support assembly; 31. Sleeve; 32. Fixed rod; 33. Second spring; 34. Placement plate; 4. Drive mechanism; 41. Mounting base; 42. Drive motor; 43. First bevel gear; 44. Second bevel gear; 45. Transmission rod. Detailed Implementation

[0026] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Depend on Figures 1-8 The present invention includes a base plate 1, a support plate 11 fixedly connected to the upper surface of the base plate 1, a rotating plate 12 above the support plate 11, a clamping mechanism 2 for clamping and limiting the PCB board on the surface of the rotating plate 12, a driving mechanism 4 for driving the rotating plate 12 to rotate fixedly installed at the top of the base plate 1, the driving mechanism 4 can drive the clamping mechanism 2 to clamp and limit the PCB board, a support component 3 is installed at the center of the upper surface of the rotating plate 12, the support component 3 includes a placement plate 34 elastically installed with the rotating plate 12, when the PCB board needs to be tested, the PCB board is placed on the upper end of the placement plate 34, the driving mechanism 4 drives the rotating plate 12 to rotate, thereby providing power to the clamping mechanism 2, so that the clamping mechanism 2 can clamp and limit the PCB board;

[0028] For example, the clamping mechanism 2 includes two sets of mutually symmetrical first clamping blocks 23, and a mutually symmetrical second clamping block 24 between the two sets of first clamping blocks 23. One side surface of the first clamping block 23 and the second clamping block 24 is inclined, and the inclined surface is provided with a rubber pad. The PCB board is clamped by the first clamping block 23 and the second clamping block 24. When the inclined surface on the first clamping block 23 and the second clamping block 24 contacts the PCB board, the placement plate 34 is pressed down, and the upper end of the PCB board is limited by the first clamping block 23 and the second clamping block 24 to prevent the PCB board from bending.

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 Two sets of first clamping blocks 23 are provided with movable blocks 21 on one side. Two sets of insert rods extending to the other side of the movable block 21 are fixedly connected to one side surface of the first clamping block 23. The first clamping block 23 can be limited by the setting of the insert rods.

[0030] For example, a first spring 22 is sleeved on the outer wall of the insertion rod, and the first spring 22 can make the first clamping block 23 elastically clamp.

[0031] For example, both sets of movable blocks 21 and the second clamping block 24 are fixedly connected to a slider 25 extending to the bottom of the rotating plate 12 on one side surface. The slider 25 can limit the first clamping block 23 and the second clamping block 24.

[0032] Please see Figure 1 , Figure 3 , Figure 5 , Figure 8 Two sets of second inclined grooves 14 are symmetrically provided on the surface of the rotating plate 12. A first inclined groove 13 is symmetrically provided on the surface of the rotating plate 12 between the two sets of second inclined grooves 14. The slider 25 is respectively sleeved on the inner wall of the first inclined groove 13 and the second inclined groove 14. When the rotating plate 12 rotates, the first clamping block 23 and the second clamping block 24 can be moved by the cooperation of the first inclined groove 13 and the second inclined groove 14, so as to facilitate the testing of the PCB board.

[0033] Please see Figures 4-6 The upper surface of the support plate 11 is provided with four sets of limiting blocks 15 in a cross-shaped symmetrical manner. The slider 25 is slidably connected to the limiting blocks 15. By setting the limiting blocks 15, the slider 25 can only move parallel to the limiting blocks 15.

[0034] Please see Figure 4 Four sets of circularly arranged arc-shaped blocks 16 are fixedly connected to the upper surface of the support plate 11. Multiple sets of ball bearings 17 that contact the bottom of the rotating plate 12 are movably fitted on the upper surface of the arc-shaped blocks 16. The four sets of arc-shaped blocks 16 and the limiting block 15 are staggered. The ball bearings 17 installed on the arc-shaped blocks 16 help to reduce friction and facilitate the rotation of the rotating plate 12. At the same time, the arc-shaped blocks 16 and the ball bearings 17 can support the rotating plate 12.

[0035] Please see Figure 2 and Figure 3 The drive mechanism 4 includes a drive motor 42 fixedly connected to the upper surface of the base plate 1. A mounting base 41 is fixedly mounted on the upper surface of the drive motor 42. The output end of the mounting base 41 is connected to a first bevel gear 43 via a coupling. A second bevel gear 44, which is rotatably connected to the base plate 1, is meshed on one side of the first bevel gear 43. A transmission rod 45 extending above the support plate 11 is fixedly connected to the top of the second bevel gear 44, and the top of the transmission rod 45 is fixedly connected to the rotating plate 12. The drive motor 42 drives the first bevel gear 43 to rotate, and the first bevel gear 43 drives the second bevel gear 44 to rotate. The second bevel gear 44 drives the transmission rod 45 to rotate, which can provide a rotational force to the rotating plate 12. Since the size of the first bevel gear 43 is smaller than that of the second bevel gear 44, it is easier to slow down the rotation speed of the rotating plate 12, and it is easier to clamp and limit the PCB board through the clamping mechanism 2.

[0036] Please see Figure 7 and Figure 8The lower surface of the placement plate 34 is symmetrically fixedly connected with fixed rods 32 extending to the bottom of the rotating plate 12. The top of the support plate 11 is symmetrically fixedly connected with two sets of sleeves 31. The inner walls of the two sets of sleeves 31 are fixedly installed with second springs 33 that are fixedly connected to the bottom of the fixed rods 32. The fixed rods 32 can be limited by the arrangement of the sleeves 31 and the second springs 33, and the fixed rods 32 can move within the sleeves 31.

[0037] For example, two sets of arc-shaped grooves 18 are symmetrically opened on the surface of the rotating plate 12, and the fixing rod 32 is sleeved on the inner wall of the arc-shaped groove 18. The fixing rod 32 can be limited by the setting of the arc-shaped groove 18.

[0038] Working principle: By placing the PCB board to be inspected on the rotating plate 12, the drive motor 42 drives the first bevel gear 43 to rotate. The first bevel gear 43, in conjunction with the second bevel gear 44 and the transmission rod 45, drives the rotating plate 12 to rotate. During the rotation of the rotating plate 12, the slider 25 moves within the inner wall of the limiting block 15 through the setting of the first inclined groove 13 and the second inclined groove 14, thereby driving the first clamping block 23 and the second clamping block 24 to move. The PCB board is clamped by the first clamping block 23 and the second clamping block 24.

[0039] Furthermore, when the PCB board is rectangular, when the first clamping block 23 contacts the PCB board, the second clamping block 24 does not. At this time, the first clamping block 23 compresses the first spring 22, and the second clamping block 24 continues to move and contact the PCB board. Both the first clamping block 23 and the second clamping block 24 pass through inclined plane a (see details). Figure 6 When the first clamping block 23 and the second clamping block 24 continue to move, they press down on the PCB board on the placement plate 34. The fixing rod 32 moves down to compress the second spring 33, which in turn moves the placement plate 34 and the PCB board down until the PCB board is stuck in the plane position at the lower end of the inclined surface of the first clamping block 23 and the second clamping block 24. This clamps and limits the PCB board, making it easier to test and use the PCB board. At this time, the PCB board cannot move up.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable PCB board testing fixture, comprising a base plate (1), characterized in that: A support plate (11) is fixedly connected to the upper surface of the base plate (1). A rotating plate (12) is provided above the support plate (11). A clamping mechanism (2) for clamping and limiting the PCB board is provided on the surface of the rotating plate (12). A driving mechanism (4) for driving the rotating plate (12) to rotate is fixedly installed at the top of the base plate (1). The clamping mechanism (2) can be driven by the driving mechanism (4) to clamp and limit the PCB board. A support component (3) is installed at the center of the upper surface of the rotating plate (12). The support component (3) includes a placement plate (34) that is elastically installed with the rotating plate (12). The clamping mechanism (2) includes two sets of mutually symmetrical first clamping blocks (23), and a mutually symmetrical second clamping block (24) is provided between the two sets of first clamping blocks (23). One side surface of the first clamping block (23) and the second clamping block (24) is inclined, and the inclined surface is provided with a rubber pad.

2. The adjustable PCB board test fixture according to claim 1, characterized in that: Two sets of first clamping blocks (23) are provided with movable blocks (21) on one side. Two sets of insert rods extending to the other side of the movable blocks (21) are fixedly connected to one side surface of the first clamping block (23), and a first spring (22) is sleeved on the outer wall of the insert rod. Both sets of movable blocks (21) and the second clamping block (24) are fixedly connected to one side surface of the second clamping block (24) with sliders (25) extending to the bottom of the rotating plate (12).

3. The adjustable PCB board test fixture according to claim 2, characterized in that: The rotating plate (12) has two sets of second inclined grooves (14) symmetrically opened on its surface. A first inclined groove (13) is symmetrically opened on the surface of the rotating plate (12) between the two sets of second inclined grooves (14). The slider (25) is respectively sleeved on the inner wall of the first inclined groove (13) and the second inclined groove (14).

4. The adjustable PCB board test fixture according to claim 3, characterized in that: The upper surface of the support plate (11) is provided with four sets of limiting blocks (15) in a cross-shaped symmetrical manner, and the slider (25) is slidably sleeved with the limiting blocks (15).

5. An adjustable PCB board testing fixture according to claim 4, characterized in that: The upper surface of the support plate (11) is fixedly connected with four sets of circular arc blocks (16). The upper surface of the arc blocks (16) is movably fitted with multiple sets of balls (17) that contact the bottom end of the rotating plate (12). The four sets of arc blocks (16) are staggered with the limiting blocks (15).

6. An adjustable PCB board testing fixture according to claim 1, characterized in that: The drive mechanism (4) includes a drive motor (42) fixedly connected to the upper surface of the base plate (1). A mounting base (41) is fixedly installed on the upper surface of the drive motor (42). The output end of the mounting base (41) is connected to a first bevel gear (43) through a coupling. A second bevel gear (44) rotatably connected to the base plate (1) is meshed on one side of the first bevel gear (43). A transmission rod (45) extending to the top of the second bevel gear (44) is fixedly connected to the top of the support plate (11), and the top of the transmission rod (45) is fixedly connected to the rotating plate (12).

7. An adjustable PCB board testing fixture according to claim 1, characterized in that: The lower surface of the placement plate (34) is symmetrically fixedly connected with a fixing rod (32) extending to the bottom of the rotating plate (12). The top of the support plate (11) is symmetrically fixedly connected with two sets of sleeves (31). The inner walls of the two sets of sleeves (31) are fixedly installed with a second spring (33) that is fixedly connected to the bottom end of the fixing rod (32). The surface of the rotating plate (12) is symmetrically provided with two sets of arc grooves (18). The fixing rod (32) is sleeved on the inner wall of the arc groove (18).

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