Pressing device for PCB (Printed Circuit Board) test
By designing a mechanical corner locking device consisting of a support frame, sleeve, and pressure bar assembly, combined with springs and silicone blocks, the problems of complex structure, high cost, and narrow applicability of existing PCB board testing clamping devices are solved, achieving a PCB board testing clamping effect that is simple to operate, low in cost, and widely applicable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-06
AI Technical Summary
Existing PCB board testing clamping devices are complex in structure, costly, and have a narrow range of applications, making it difficult to meet the adjustment needs of PCB boards of different sizes and thicknesses.
A clamping device comprising a support frame, a sleeve, and a pressure rod assembly was designed. Through the cooperation of mechanical structure rotation and spring, the pressure rod is locked and automatically reset. Combined with silicone blocks, the fit is improved, adapting to the position and angle requirements of different PCB boards.
It achieves PCB board testing and clamping that is simple to operate, low in cost, and widely applicable, avoiding the problems of complex structure and high cost, and improving the effectiveness and reliability of testing.
Smart Images
Figure CN223977267U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB board testing, specifically to a clamping device for PCB board testing. Background Technology
[0002] Before leaving the factory, PCBA boards undergo a testing process to check their sensitivity and ensure product quality. During testing, the flexible test board must be pressed together with the PCBA board to ensure tight contact and the effectiveness and reliability of the test. However, existing testing clamping devices are either overly complex or expensive. For example, patent CN220829571U discloses an automated PCB functional testing tool, in which the clamping mechanism uses a lifting component to automatically adjust the clamping height, requiring additional power and increasing costs. Another example is patent CN210550622U, which discloses a PCB clamping and fixing device for testing optical devices. It uses a cover and base to clamp the PCB board, but it is inconvenient to adjust for PCBs of different sizes and thicknesses, resulting in a narrow range of applications. Utility Model Content
[0003] This invention aims to solve the problems of complex structure and high cost of existing PCB board testing clamping fixtures, and proposes a clamping device for PCB board testing. This device has the advantages of convenient operation, low cost and wide applicability.
[0004] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:
[0005] The working principle of this utility model is as follows:
[0006] A clamping device for PCB board testing is characterized by comprising a support frame, a sleeve vertically connected to the support frame, and a pressure rod assembly movably connected to the sleeve; the pressure rod assembly includes a coaxially connected adapter rod and a pressure rod, the adapter rod being rotatably disposed at the upper end of the pressure rod; a limit structure is provided on the sleeve, and when the pressure rod assembly moves along the axis of the sleeve to clamp the device under test, the adapter rod cooperates with the limit structure to lock the pressure rod assembly.
[0007] Furthermore, a lower end cap is connected to the bottom of the sleeve, the pressure rod passes through the lower end cap, and a guide hole is provided on the lower end cap to prevent the pressure rod from rotating.
[0008] Furthermore, the guide hole is an oblong hole, and the shape of the pressure rod matches the shape of the oblong hole.
[0009] Furthermore, a handle is connected to the side wall of the adapter rod, and a vertical through groove is formed on the sleeve wall along its axial direction. The handle extends out of the sleeve through the vertical through groove, and operating the handle can drive the entire pressure rod assembly to move along the vertical through groove.
[0010] Furthermore, the sleeve wall is provided with a transverse through groove that communicates with the vertical through groove. The transverse through groove is used to lock the pressure rod assembly in cooperation with the handle when the entire pressure rod assembly moves along the vertical through groove to press the device under test.
[0011] Furthermore, the transverse through groove is located at the bottom of the vertical through groove, and together with the vertical through groove, they form an "L"-shaped through groove.
[0012] Furthermore, a spring is fitted onto the pressure rod, and the spring is located between the stepped surface formed at the connection between the adapter rod and the pressure rod and the upper end surface of the lower end cover.
[0013] Furthermore, the top of the sleeve is connected to an upper end cap, and the support frame is provided with a strip hole for adjusting the installation position of the sleeve. The upper end cap is fixedly connected to the strip hole by bolts.
[0014] Furthermore, the lower end cover and the sleeve are detachably fixedly connected. The lower end cover is provided with a U-shaped adjustment hole, and the sleeve is provided with a bolt hole that mates with the U-shaped adjustment hole.
[0015] Furthermore, a rubber clamping block is connected to the bottom of the pressure rod, and a silicone block is connected to the rubber clamping block.
[0016] The working principle of the clamping device of this utility model is as follows:
[0017] Adjust the installation position of the sleeve on the support frame so that the pressure rod assembly is adapted to the position of the device under test; then, according to the orientation of the device under test, rotate the lower end cap to adjust the angle of the pressure rod so that the silicone block at its end is directly facing the surface of the device under test, which facilitates the subsequent clamping operation.
[0018] The operating handle drives the pressure rod assembly to move along the vertical through groove. When it moves to the bottom of the vertical through groove, the front end of the pressure rod assembly presses against the device under test, and the spring is in a compressed state. Then, the handle is rotated to move it into the horizontal through groove. Under the limiting action of the horizontal through groove, the pressure rod assembly pressing against the device under test is locked.
[0019] After the test is completed, turn the handle to disengage it from the limit of the transverse through slot. At this time, the pressure rod assembly will automatically move upward under the action of the spring. Then, a new device to be tested can be placed, and the next pressing and locking operation can be performed according to the above process.
[0020] In summary, this utility model has the following advantages:
[0021] 1. This utility model achieves the locking of the pressure rod assembly through mechanical structure rotation, which has the advantages of ingenious structural design, convenient operation and low cost;
[0022] 2. This utility model has a spring on the pressure rod assembly. By setting the spring, the pressure rod assembly in the clamping device can be automatically reset, improving the convenience of operation.
[0023] 3. In this utility model, by adjusting the installation position of the sleeve, the front end of the pressure rod assembly can be adapted to the position of the device under test. By rotating the lower end cover, the angle of the pressure rod can be adjusted, thereby adjusting the angle of the pressure point.
[0024] 4. The front end of the pressure rod of this utility model is provided with a silicone block. The silicone block can prevent the pressure rod from damaging the surface of the device under test and increase the degree of adhesion to the surface of the device under test. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the pressing device of this utility model;
[0026] Figure 2 This is a side view of the structure of the clamping device of this utility model;
[0027] Figure 3 This is a schematic diagram of the internal structure of the sleeve of this utility model;
[0028] Figure 4 for Figure 3 TT-direction sectional view;
[0029] In the picture:
[0030] 1. Base plate, 2. Vertical bracket, 3. Horizontal bracket, 4. Sleeve, 5. Adapter post, 6. Handle, 7. Lower end cover, 8. Pressure rod, 9. Upper end cover, 10. Clamping block, 11. Silicone block, 12. Spring, 13. Operating table, 14. Strip hole, 15. "L" shaped through groove, 16. U-shaped adjustment hole, 17. Guide hole. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] In the description of this utility model, it should be noted that the terms "upper," "vertical," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0036] The following embodiments can be combined arbitrarily without conflict.
[0037] Example 1
[0038] This embodiment provides a clamping device for PCB board testing, such as... Figure 1 As shown, it includes a support frame, a sleeve 4 vertically connected to the support frame, and a pressure rod 8 assembly movably connected to the sleeve 4; the pressure rod 8 assembly includes a coaxially connected adapter rod and a pressure rod 8, the adapter rod being rotatably disposed at the upper end of the pressure rod 8; a limit structure is provided on the sleeve 4, and when the pressure rod 8 assembly moves along the axial direction of the sleeve 4 to press the device under test, the adapter rod and the limit structure cooperate to lock the pressure rod 8 assembly.
[0039] In this plan, such as Figure 2As shown, the support frame includes a base plate 1, a vertical support 2, and a horizontal support 3. The vertical support 2 is connected to the base plate 1, the horizontal support 3 is connected to the vertical support 2, and the sleeve 4 assembly is connected to the horizontal support 3. A test operating table 13 for use with this clamping device is placed on the base plate 1. The device under test is located on the table surface of the operating table 13, and the operating table 13 is also equipped with necessary testing equipment.
[0040] like Figure 3 and Figure 4 As shown, a lower end cap 7 is connected to the bottom of the sleeve 4, and the pressure rod 8 passes through the lower end cap 7. The lower end cap 7 is provided with a guide hole 17 to prevent the pressure rod 8 from rotating. In this embodiment, the guide hole 17 is an oblong hole, and the shape of the pressure rod 8 matches the shape of the oblong hole, so that the pressure rod 8 can only move in a straight line along the guide hole 17.
[0041] Furthermore, a handle 6 is connected to the side wall of the adapter rod, and a vertical through groove is formed on the sleeve 4 along its axial direction. The handle 6 extends out of the sleeve 4 through the vertical through groove. Operating the handle 6 can drive the entire pressure rod 8 assembly to move along the vertical through groove.
[0042] Furthermore, a transverse through groove communicating with the vertical through groove is provided on the wall of the sleeve 4. This transverse through groove is used to lock the pressure rod 8 assembly in conjunction with the handle 6 when the entire assembly moves along the vertical through groove to press the device under test. Preferably, the transverse through groove is located at the bottom of the vertical through groove, forming an "L"-shaped through groove 15 together with the vertical through groove. Figure 1 As shown in the image.
[0043] In this embodiment, the working principle of the clamping device is as follows:
[0044] The operating handle 6 drives the entire pressure rod 8 assembly to move along the vertical through groove. When it moves to the bottom of the vertical through groove, the front end of the pressure rod 8 assembly presses the device under test. Then, the handle 6 is rotated to move it into the horizontal through groove. Under the limiting action of the horizontal through groove, the pressure rod 8 assembly is locked.
[0045] After the test is completed, rotate handle 6 to disengage it from the limit of the transverse through groove. At this time, operating handle 6 will drive the pressure rod 8 assembly to move upward, and a new device to be tested can be placed. The next pressing and locking operation can be performed according to the above process.
[0046] This utility model uses a mechanical structure to rotate the angle to lock the eight components of the pressure rod, which has the advantages of ingenious structural design, convenient operation and low cost.
[0047] Example 2
[0048] This embodiment provides a clamping device for PCB board testing, which differs from Embodiment 1 in the following ways:
[0049] Furthermore, in this embodiment, as Figure 3 As shown, a spring 12 is sleeved on the outer wall of the pressure rod 8. The spring 12 is located between the stepped surface formed at the connection between the adapter rod and the pressure rod 8 and the upper end surface of the lower end cover 7. By setting the spring 12, the pressure rod 8 assembly in the clamping device can be automatically reset, improving the convenience of operation.
[0050] In this embodiment, the working principle of the clamping device is as follows:
[0051] The operating handle 6 drives the entire pressure rod 8 assembly to move along the vertical through groove. When it moves to the bottom of the vertical through groove, the front end of the pressure rod 8 assembly presses the device under test, at which time the spring 12 is in a compressed state. Then, the handle 6 is rotated to move it into the horizontal through groove. Under the limiting action of the horizontal through groove, the pressure rod 8 assembly is locked.
[0052] After the test is completed, turn the handle 6 to disengage it from the limit of the transverse through groove. At this time, under the rebound action of the spring 12, the pressure rod 8 assembly will automatically move upward. At this time, a new device to be tested can be placed, and the next pressing and locking operation can be performed according to the above process.
[0053] Example 3
[0054] This embodiment provides a clamping device for PCB board testing, which differs from any of the above embodiments in the following ways:
[0055] Furthermore, in this embodiment, as Figure 1 As shown, the top of the sleeve 4 is connected to an upper end cap 9, and the support frame is provided with a strip hole 14 for adjusting the installation position of the sleeve 4. The upper end cap 9 is fixedly connected to the strip hole 14 by bolts. By adjusting the installation position of the sleeve 4, the front end of the pressure rod 8 assembly can be adapted to the position of the device under test.
[0056] Example 4
[0057] This embodiment provides a clamping device for PCB board testing, which differs from any of the above embodiments in the following ways:
[0058] Furthermore, in this embodiment, as Figure 4 As shown, the lower end cover 7 and the sleeve 4 are detachably fixedly connected. The lower end cover 7 is provided with a U-shaped adjustment hole 16, and the sleeve 4 is provided with a bolt hole that mates with the U-shaped adjustment hole 16. Since the pressure rod 8 and the adapter rod are rotatably connected, the angle of the pressure rod 8 can be adjusted synchronously by rotating the lower end cover 7, thereby adjusting the angle of the pressure point.
[0059] Example 5
[0060] This embodiment provides a clamping device for PCB board testing, which differs from any of the above embodiments in the following ways:
[0061] like Figure 1 and Figure 2 As shown, in this embodiment, a clamping block 10 is connected to the bottom of the pressure rod 8, and a silicone block 11 is connected to the clamping block 10. The silicone block 11 can prevent the pressure rod 8 from damaging the surface of the device under test, and can also increase the degree of adhesion between the pressure rod 8 and the surface of the device under test.
[0062] The working principle of the clamping device of this utility model is as follows:
[0063] Adjust the mounting position of the sleeve 4 on the support frame so that the pressure rod 8 assembly is adapted to the position of the device under test; then, according to the orientation of the device under test, rotate the lower end cover 7 to adjust the angle of the pressure rod 8 so that the silicone block 11 at its end can face the surface of the device under test, which is convenient for subsequent clamping operations.
[0064] The operating handle 6 drives the entire pressure rod 8 assembly to move along the vertical through groove. When it moves to the bottom of the vertical through groove, the front end of the pressure rod 8 assembly presses against the device under test, and the spring 12 is in a compressed state. Then, the handle 6 is rotated to move it into the horizontal through groove. Under the limiting action of the horizontal through groove, the pressure rod 8 assembly pressing against the device under test is locked.
[0065] After the test is completed, turn the handle 6 to disengage it from the limit of the transverse through groove. At this time, under the action of the spring 12, the pressure rod 8 assembly will move up automatically. At this time, a new device to be tested can be placed, and the next pressing and locking operation can be performed according to the above process.
[0066] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A presser device for testing a PCB board, characterized by, The application relates to a supporting frame, a sleeve (4) vertically connected to the supporting frame and a compression rod (8) assembly movably connected in the sleeve (4); the compression rod (8) assembly comprises a connecting rod coaxially connected to the compression rod (8), and the connecting rod is rotationally arranged on the upper end of the compression rod (8); a limiting structure is arranged on the sleeve (4), and when the compression rod (8) assembly is moved along the axial direction of the sleeve (4) to compress a device to be tested, the connecting rod cooperates with the limiting structure to lock the compression rod (8) assembly.
2. The hold-down device for testing a PCB as claimed in claim 1, wherein, The lower end cover (7) is connected to the bottom of the sleeve (4), the compression rod (8) penetrates through the lower end cover (7), and a guide hole (17) for preventing the compression rod (8) from rotating is arranged on the lower end cover (7).
3. The hold-down apparatus for testing a PCB as recited in claim 2, wherein The guide hole (17) is a waist-shaped hole, and the shape of the compression rod (8) matches the shape of the waist-shaped hole.
4. The hold-down apparatus for testing PCBs of claim 2, wherein, A handle (6) is connected to the side wall of the connecting rod, a vertical through groove is formed on the sleeve (4) along the axial direction of the sleeve (4), and the handle (6) penetrates through the vertical through groove and extends out of the sleeve (4).
5. The hold-down apparatus for testing a PCB board as claimed in claim 4, wherein, A horizontal through groove is arranged on the sleeve (4) and communicates with the vertical through groove, and the horizontal through groove is used for locking the compression rod (8) assembly when the compression rod (8) assembly is moved along the vertical through groove to compress a device to be tested, and the horizontal through groove cooperates with the handle (6) to lock the compression rod (8) assembly.
6. The hold-down apparatus for testing a PCB board as claimed in claim 5, wherein, The horizontal through groove is located at the bottom of the vertical through groove and forms an L-shaped through groove (15) together with the vertical through groove.
7. A hold-down device for testing a PCB as claimed in any one of claims 2 to 6, wherein, A spring (12) is arranged on the compression rod (8), and the spring (12) is arranged between a stepped surface formed at the connecting position of the connecting rod and the compression rod (8) and the upper end surface of the lower end cover (7).
8. The hold-down apparatus for testing PCBs of claim 1, wherein, An upper end cover (9) is connected to the top of the sleeve (4), a strip-shaped hole (14) for adjusting the mounting position of the sleeve (4) is arranged on the supporting frame, and the upper end cover (9) is fixedly connected in the strip-shaped hole (14) through bolts.
9. The hold-down apparatus for testing PCBs of claim 2, wherein, The lower end cover (7) is detachably fixedly connected to the sleeve (4), a U-shaped adjusting hole (16) is arranged on the lower end cover (7), and a bolt hole matched with the U-shaped adjusting hole (16) is arranged on the sleeve (4).
10. A hold-down device for testing a PCB board as claimed in any one of claims 2 to 6, wherein, A silica gel block (11) is connected to the glue clamping block (10) arranged on the bottom of the compression rod (8).