A press contact mechanism for testing a circuit board

Abstract

This utility model relates to the field of circuit boards, and particularly to a crimping mechanism for circuit board testing. It includes a support plate, a crimping structure installed at the center of one outer wall of the support plate, and a lower pressure plate connected to one end of the crimping structure. The outer walls of the lower pressure plate and the support plate, which are close to each other, have equidistantly distributed convex grooves, each containing a slidably connected support structure. Adjustment components are located at the four corners of the bottom outer wall of the support plate. The crimping structure includes a mounting rod installed on the outer wall of the support plate, a mounting groove at the center of the mounting rod, an adjusting screw rotatably connected to the center of the mounting groove, and an extension rod threaded to the outer wall of the adjusting screw. In this utility model, the rotating bar rotates around the fastening screw, and the support rubber head is slidably connected to the rotating bar via a friction block. This allows for multi-directional adjustment of the position of the support rubber head in the support plate and the lower pressure plate, avoiding frequent replacement of the housing and facilitating adjustment and fixation.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a crimping mechanism for circuit board testing. Background Technology

[0002] Circuit board names include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed circuit board (copper etching technology), etc.

[0003] During the testing of PCBA circuit boards, it is usually necessary to power on the assembled circuit board to perform partial circuit tests and overall functional tests. This requires setting up a qualified test environment to meet the test requirements. The current method is to first install the PCBA circuit board under test into the matching housing and then perform wiring and power-on tests. However, the circuit board needs to be installed in the matching housing to be fixed for testing. When testing different circuit boards, it is necessary to frequently change the matching housing, which is quite cumbersome. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems and deficiencies by proposing a crimping mechanism for circuit board testing: a rotating bar rotates around a fastening screw as its center, and a support rubber head is slidably connected to the rotating bar via a friction block. This allows for multi-directional adjustment of the position of the support rubber head in the support plate and the lower pressure plate, avoiding frequent replacement of the matching housing, facilitating adjustment and fixation, and solving the problem of frequent replacement of the matching housing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A crimping mechanism for circuit board testing includes a support plate. A crimping structure is installed at the center of one outer wall of the support plate, and one end of the crimping structure is connected to a lower pressure plate. The lower pressure plate and the support plate have equally spaced convex grooves on their respective outer walls, and a support structure is slidably connected in each of the convex grooves. Adjustment components are provided at the four corners of the bottom outer wall of the support plate. The crimping structure includes a mounting rod installed on the outer wall of the support plate, a mounting groove opened at the center of the mounting rod, an adjusting screw rotatably connected to the center of the mounting groove, and an extension rod threadedly connected to the outer wall of the adjusting screw. The support structure includes a sliding block slidably connected to the inner wall of the convex groove, a rotating bar rotatably connected to the center of the top of the sliding block, and two threaded holes opened at the center of the top of the sliding block and one end of the rotating bar.

[0007] Preferably, the other end of the rotating bar has a strip-shaped hole, and a friction block one is slidably connected to the inner wall of the strip-shaped hole. A friction block two is welded to the bottom outer wall of the friction block one. The friction block one and the friction block two are slidably connected to the inner wall of the strip-shaped hole and the outer wall of the support plate or the lower pressure plate, respectively.

[0008] Preferably, the top outer wall of the sliding block is provided with threaded holes at both ends, and fastening screws are threadedly connected to both threaded holes. A support rubber head is installed on the top outer wall of the friction block.

[0009] Preferably, one end of the extension rod has sleeves evenly distributed on its bottom outer wall, and the inner wall of the sleeves has a connecting spring installed thereon, with the other end of the connecting spring installed on the top outer wall of the lower pressure plate.

[0010] Preferably, a sliding tube is installed on the top outer wall of the lower pressure plate at the sleeve, the outer wall of the sliding tube is slidably connected to the inner wall of the sleeve, and weight reduction holes are evenly distributed on the outer wall of the lower pressure plate.

[0011] Preferably, a balance bar is installed on the outer wall of the other end of the extension rod, and the outer wall of the balance bar has an assembly hole, and a counterweight is installed on the top outer wall of the balance bar.

[0012] Preferably, an adjustment motor is installed on the outer wall of the top end of the mounting rod, and the output shaft of the adjustment motor is connected to one end of the adjustment screw, and the outer walls of the extension rod and the balance bar are slidably connected to the outer wall of the mounting rod and the inner wall of the mounting groove.

[0013] Preferably, the adjustment assembly includes threaded rods welded to the four corners of the bottom outer wall of the support plate and threaded seats threaded to the outer wall of the threaded rods, and the outer wall of the threaded seats is provided with fixing holes.

[0014] Preferably, the regulating motor is connected to a switch via a wire, and the switch is connected to a power source via a wire.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The rotating bar rotates around the fastening screw as the center. The support rubber head is slidably connected to the rotating bar through the friction block. The position of the support rubber head in the support plate and the lower pressure plate can be adjusted in multiple directions to avoid frequent replacement of the matching housing and facilitate adjustment and fixation.

[0017] 2. The support rubber head on the lower pressure plate contacts the mounting holes of the circuit board, fixing the circuit board between the support plate and the lower pressure plate, protecting the circuit board, and fixing the circuit board to facilitate wiring and testing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a crimping mechanism for circuit board testing proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the sliding block unfolding structure of a crimping mechanism for circuit board testing proposed in this utility model;

[0020] Figure 3This is a schematic diagram of the mounting rod structure of a crimping mechanism for circuit board testing proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the unfolded structure of the adjustment component of the crimping mechanism for circuit board testing proposed in this utility model.

[0022] In the diagram: 1 Support plate, 2 Pressing structure, 3 Lower pressure plate, 4 Convex groove, 5 Support structure, 6 Adjustment component, 7 Threaded rod, 8 Threaded seat, 9 Sliding block, 10 Threaded hole one, 11 Rotating bar, 12 Threaded hole two, 13 Fastening screw, 14 Strip hole, 15 Friction block one, 16 Friction block two, 17 Support rubber head, 18 Mounting rod, 19 Mounting groove, 20 Adjusting screw, 21 Extension rod, 22 Sleeve, 23 Connecting spring, 24 Sliding tube, 25 Adjusting motor, 26 Balance bar, 27 Counterweight block, 28 Weight reduction hole. Detailed Implementation

[0023] 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.

[0024] Example 1:

[0025] Reference Figure 1-4 A crimping mechanism for circuit board testing includes a support plate 1. A crimping structure 2 is installed at the center of one outer wall of the support plate 1. One end of the crimping structure 2 is connected to a lower pressure plate 3. The lower pressure plate 3 and the support plate 1 are provided with equally spaced convex grooves 4 on their respective outer walls. Support structures 5 are slidably connected in the convex grooves 4. Adjustment components 6 are provided at the four corners of the bottom outer wall of the support plate 1. The support rubber head 17 on the lower pressure plate 3 contacts the mounting hole of the circuit board, fixing the circuit board between the support plate 1 and the lower pressure plate 3, protecting the circuit board, and fixing the circuit board to facilitate wiring and testing.

[0026] The support structure 5 includes a sliding block 9 slidably connected to the inner wall of the convex groove 4, a rotating bar 11 rotatably connected to the top center of the sliding block 9, and a threaded hole 12 opened at the top center of the sliding block 9 and one end of the rotating bar 11. The support rubber head 17 is slidably connected to the outer wall of the support plate 1 or the lower pressure plate 3 and the outer wall of the strip hole 14 through friction block 15 and friction block 2 16, which is convenient for adjustment and easy to fix after adjustment.

[0027] The other end of the rotating bar 11 is provided with a strip-shaped hole 14. A friction block 15 is slidably connected to the inner wall of the strip-shaped hole 14. A friction block 2 16 is welded to the bottom outer wall of the friction block 15. The friction block 15 and the friction block 2 16 are slidably connected to the inner wall of the strip-shaped hole 14 and the outer wall of the support plate 1 or the lower pressure plate 3, respectively.

[0028] Both ends of the top outer wall of the sliding block 9 are provided with threaded holes 10. Fastening screws 13 are threadedly connected to threaded holes 10 and 12. The top outer wall of the friction block 15 is equipped with a support rubber head 17. The fastening screws 13 are threadedly connected in threaded holes 10 to fix the sliding block 9 in the convex groove 4. The fastening screws 13 in threaded holes 12 fix the rotating bar 11 in the sliding block 9 for easy fixation.

[0029] One end of the extension rod 21 has sleeves 22 evenly distributed on its bottom outer wall. The inner wall of the sleeves 22 is fitted with connecting springs 23. The other end of the connecting springs 23 is fitted on the top outer wall of the lower pressure plate 3. The extension rod 21 is connected to the lower pressure plate 3 through the connecting springs 23. After the support rubber head 17 on the lower pressure plate 3 contacts the circuit board, it compresses the connecting springs 23, leaving buffer space for the adjustment motor to stop, so as to avoid damaging the circuit board.

[0030] A sliding tube 24 is installed on the top outer wall of the lower pressure plate 3 at the sleeve 22. The outer wall of the sliding tube 24 is slidably connected to the inner wall of the sleeve 22. Weight reduction holes 28 are evenly distributed on the outer wall of the lower pressure plate 3. The connecting spring 23 is located in the sleeve 22 and the sliding tube 24. The sliding tube 24 is slidably connected to the inner wall of the sleeve 22 to ensure the stability of the buffering process.

[0031] The adjustment component 6 includes threaded rods 7 welded to the four corners of the bottom outer wall of the support plate 1 and threaded seats 8 threaded to the outer wall of the threaded rods 7. The outer wall of the threaded seat 8 is provided with fixing holes.

[0032] Example 2:

[0033] Reference Figure 1-2 The pressing structure 2 includes a mounting rod 18 installed on the outer wall of the support plate 1, a mounting groove 19 opened at the center of the mounting rod 18, an adjusting screw 20 rotatably connected to the center of the mounting groove 19, and an extension rod 21 threadedly connected to the outer wall of the adjusting screw 20. Loosen the fastening screws 13 of the threaded hole 10 and the threaded hole 12 on the sliding block 9 so that the sliding block 9 can move in the convex groove 4. The rotating bar 11 rotates around the fastening screw 13 as the center. The support rubber head 17 is slidably connected to the rotating bar 11 through the friction block 15. The position of the support rubber head 17 in the support plate 1 and the lower pressure plate 3 can be adjusted in multiple directions to avoid frequent replacement of the matching housing and facilitate adjustment and fixation.

[0034] A balance bar 26 is installed on the outer wall of the other end of the extension rod 21. The outer wall of the balance bar 26 has an assembly hole. A counterweight 27 is installed on the top outer wall of the balance bar 26. The counterweight 27 is installed in the balance bar 26 at the other end of the extension rod 21 so that the weight of the two ends of the extension rod 21 is balanced, ensuring the stability of the lower pressure plate 3 during the descent process and avoiding swaying caused by imbalance.

[0035] An adjustment motor 25 is installed on the outer wall of the top end of the mounting rod 18. The output shaft of the adjustment motor 25 is connected to one end of the adjustment screw 20. The outer walls of the extension rod 21 and the balance bar 26 are slidably connected to the outer wall of the mounting rod 18 and the inner wall of the mounting groove 19.

[0036] The regulating motor 25 is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

[0037] Working principle: During use, place the circuit board sample to be tested on top of the support plate 1. According to the mounting holes on the circuit board, loosen the fastening screws 13 of threaded holes 10 and 12 on the sliding block 9, so that the sliding block 9 moves in the convex groove 4. The rotating bar 11 rotates around the fastening screw 13. The support rubber head 17 is slidably connected to the rotating bar 11 through the friction block 15. The position of the support rubber head 17 in the support plate 1 and the lower pressure plate 3 can be adjusted in multiple directions, avoiding frequent replacement of the matching housing and facilitating adjustment and fixation. After adjustment, tighten screw 13 to fix sliding block 9 and rotating bar 11. Support head 17 is located at the mounting hole of circuit board. Place circuit board on top of support head 17 and start adjustment motor 25. Adjustment motor 25 drives adjustment screw 20 to rotate. Extension rod 21 on the outer wall of adjustment screw 20 drives lower pressure plate 3 to descend. Support head 17 on lower pressure plate 3 contacts mounting hole of circuit board, fixing circuit board between support plate 1 and lower pressure plate 3, protecting circuit board, and fixing circuit board for easy wiring and testing.

[0038] The exemplary embodiments of the present invention have been described in detail herein with reference to examples. However, those skilled in the art will understand that various modifications and alterations can be made to the specific embodiments described above without departing from the spirit of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims. The foregoing description of specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A crimping mechanism for circuit board testing, comprising a support plate (1), characterized in that, A pressing structure (2) is installed at the center of one side outer wall of the support plate (1), and a lower pressing plate (3) is connected to one end of the pressing structure (2). The lower pressing plate (3) and the support plate (1) are both provided with convex grooves (4) distributed at equal intervals on the outer wall of the side close to each other, and a support structure (5) is slidably connected in the convex grooves (4). Adjustment components (6) are provided at the four corners of the bottom outer wall of the support plate (1). The crimping structure (2) includes a mounting rod (18) installed on the outer wall of the support plate (1), a mounting groove (19) opened at the center of the mounting rod (18), an adjusting screw (20) rotatably connected to the center of the mounting groove (19), and an extension rod (21) threadedly connected to the outer wall of the adjusting screw (20). The support structure (5) includes a sliding block (9) that is slidably connected to the inner wall of the convex groove (4), a rotating bar (11) that is rotatably connected to the top center of the sliding block (9), and a threaded hole (12) that is opened at the top center of the sliding block (9) and one end of the rotating bar (11).

2. The crimping mechanism for circuit board testing according to claim 1, characterized in that, The other end of the rotating bar (11) is provided with a strip-shaped hole (14), and a friction block one (15) is slidably connected to the inner wall of the strip-shaped hole (14). A friction block two (16) is welded to the bottom outer wall of the friction block one (15). The friction block one (15) and the friction block two (16) are slidably connected to the inner wall of the strip-shaped hole (14) and the outer wall of the support plate (1) or the lower pressure plate (3), respectively.

3. The crimping mechanism for circuit board testing according to claim 1, characterized in that, The top outer wall of the sliding block (9) is provided with threaded holes one (10) at both ends, and fastening screws (13) are threadedly connected to threaded holes one (10) and threaded holes two (12). The top outer wall of the friction block one (15) is provided with a support rubber head (17).

4. The crimping mechanism for circuit board testing according to claim 1, characterized in that, One end of the extension rod (21) has sleeves (22) evenly distributed on its bottom outer wall, and a connecting spring (23) is installed on the inner wall of the sleeve (22). The other end of the connecting spring (23) is installed on the top outer wall of the lower pressure plate (3).

5. The crimping mechanism for circuit board testing according to claim 1, characterized in that, The outer wall of the top of the lower pressure plate (3) is equipped with a sliding tube (24) at the sleeve (22). The outer wall of the sliding tube (24) is slidably connected to the inner wall of the sleeve (22). The outer wall of the lower pressure plate (3) is provided with weight reduction holes (28) distributed at equal intervals.

6. The crimping mechanism for circuit board testing according to claim 1, characterized in that, The other end of the extension rod (21) is fitted with a balance bar (26), and the outer wall of the balance bar (26) is provided with an assembly hole. A counterweight (27) is installed on the top outer wall of the balance bar (26).

7. The crimping mechanism for circuit board testing according to claim 1, characterized in that, An adjustment motor (25) is installed on the outer wall of the top end of the mounting rod (18), and the output shaft of the adjustment motor (25) is connected to one end of the adjustment screw (20). The outer walls of the extension rod (21) and the balance bar (26) are slidably connected to the outer wall of the mounting rod (18) and the inner wall of the mounting groove (19).

8. The crimping mechanism for circuit board testing according to claim 1, characterized in that, The adjustment component (6) includes threaded rods (7) welded to the four corners of the bottom outer wall of the support plate (1) and threaded seats (8) threaded to the outer wall of the threaded rods (7), and the outer wall of the threaded seats (8) is provided with fixing holes.

9. A crimping mechanism for circuit board testing according to claim 7, characterized in that, The regulating motor (25) is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

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