A test fixture applied to a micro-PCB board

Abstract

The utility model provides a simple structure, adopts simple open and close mode, can repair and maintain at any time, improve equipment applicability and service life's one kind applied to micro -size PCB's test fixture. Including upper pressure mould group and lower mould frame body, upper pressure mould group includes upper pressure plate and upper needle plate, and the lower end surface of upper pressure plate is fixedly connected with upper needle plate through a plurality of support columns, and the upper surface of lower mould frame body is hinged with signal relay board through hinge in any end, and the upper end surface of upper needle plate and lower mould frame body all are provided with a plurality of quick -plug connector, and upper pressure mould group and lower mould frame body are electrically connected through oxhorn wire arrangement between. Upper pressure mould group and lower mould frame body adopt split type design, simplify jig structure, reduce the volume and weight of jig, and the hinge cover mode connection is adopted between signal relay board and lower mould frame body, and it is convenient to maintain and maintain, and upper pressure mould group and lower mould frame body are electrically connected through quick -plug connector and oxhorn wire arrangement, improve the scope of application. The utility model is applicable to the field of printed circuit board on -line test technology.

Description

Technical Field

[0001] This utility model relates to the field of online testing technology for printed circuit boards, and in particular to a test fixture for micro PCBs. Background Technology

[0002] During the circuit board manufacturing process, functional testing is required to ensure that the circuit board meets subsequent usage requirements. Circuit board testing typically involves connecting and pressing electronic components onto the circuit board using pin molds or pin plates, followed by testing with external testing equipment. Existing TR518 miniature press testing equipment is mainly used for small PCBA boards with an area of ​​less than 270×300mm for rapid verification, testing, and aging tests. However, existing fixtures are complex in structure, have poor compatibility of equipment interfaces, are limited in space layout, and require professional personnel for operation and maintenance, resulting in high production costs. Utility Model Content

[0003] To address the aforementioned issues, this utility model provides a test fixture for micro PCB boards that features a simple structure, easy opening and closing mechanism, and allows for maintenance and repair at any time, thereby improving the applicability and service life of the equipment.

[0004] The technical solution adopted in this utility model is as follows: This utility model includes an upper pressure module and a lower mold frame. The upper pressure module includes an upper pressure plate and an upper needle plate. The lower end face of the upper pressure plate is fixedly connected to the upper needle plate through several support columns. A signal transfer plate is hinged to any end of the upper surface of the lower mold frame. Several quick-connect connectors are provided on the upper end face of the upper needle plate and on the lower mold frame. The upper pressure module and the lower mold frame are electrically connected by a ribbon cable. Compared with the prior art, the beneficial effects of this utility model are: the upper pressure module and the lower mold frame adopt a split design, simplifying the fixture structure and minimizing the size and weight of the fixture; the signal transfer plate is connected to the lower mold frame by a hinged cover, facilitating maintenance; the upper pressure module and the lower mold frame are electrically connected by the quick-connect connectors and the ribbon cable, improving the applicability of the fixture. Therefore, this utility model adopts a simple opening and closing method, allowing for maintenance at any time, improving the applicability and service life of the equipment.

[0005] Furthermore, mounting brackets are provided on both the left and right sides of the lower mold frame, and the mounting brackets are provided with positioning holes adapted to external testing equipment. The lower mold frame can be quickly installed and removed from the testing platform through the mounting brackets and the positioning holes.

[0006] Furthermore, a plurality of mounting holes are provided on the upper end face of the upper pressure plate. The upper pressure module can be quickly installed on the lower pressure platform of the testing equipment through the mounting holes.

[0007] Furthermore, a connector mounting plate is provided on the rear end face of the lower mold frame, and the quick-connect connector is detachably mounted on the connector mounting plate. A suitable connector can be replaced on the connector mounting plate according to actual usage requirements.

[0008] Furthermore, four positioning posts are arrayed inside the lower mold frame, penetrating the bottom of the lower mold frame and extending outwards. During rapid installation of the lower mold frame onto the test platform, the positioning posts assist in positioning, improving the accuracy and convenience of the installation.

[0009] Furthermore, handle openings are provided on both the left and right side walls of the lower mold frame. Workers can directly lift the lower mold frame through these handle openings, enabling quick installation and removal from the testing platform.

[0010] Furthermore, the upper pressing module and the lower mold frame are made of aluminum alloy, high-strength fiberglass, copper, or steel. The upper pressing module and the lower mold frame utilize lightweight materials and a compact structural layout to minimize the weight of the fixture.

[0011] Finally, a quick-locking buckle is also provided on the other side of the lower mold frame corresponding to the hinge. The quick-locking buckle includes a locking buckle fixedly mounted on the signal transfer plate and a base fixedly mounted on the lower mold frame. A pressing lever is rotatably connected to the base, and a locking ring adapted to the locking buckle is provided at the upper end of the pressing lever. The lower mold frame and the signal transfer plate are locked together using a traditional buckle, which improves the ease of opening and closing and facilitates subsequent maintenance and repair. Attached Figure Description

[0012] Figure 1 This is an axial schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the upper pressure module;

[0014] Figure 3 This is a structural schematic diagram of the lower mold frame;

[0015] Figure 4 This is a schematic diagram of the structure of the latch. Detailed Implementation

[0016] like Figures 1 to 4As shown, this utility model includes an upper pressure module 1 and a lower mold frame 2. The upper pressure module 1 includes an upper pressure plate 10 and an upper needle plate 11. The lower end face of the upper pressure plate 10 is fixedly connected to the upper needle plate 11 by several support columns 12. A signal transfer plate 21 is hinged to any end of the upper surface of the lower mold frame 2 via a hinge 20. Several quick-connect connectors 3 are provided on the upper end face of the upper needle plate 11 and on the lower mold frame 2. The upper pressure module 1 and the lower mold frame 2 are electrically connected by a ribbon cable. In this utility model, the upper pressure module 1 and the lower mold frame 2 adopt a split design, simplifying the fixture structure and minimizing the size and weight of the fixture. The signal transfer plate 21 is connected to the lower mold frame 2 by a hinge 20 opening method, which facilitates maintenance. The upper pressure module 1 and the lower mold frame 2 are electrically connected by the quick-connect connectors 3 and the ribbon cable, which improves the applicability of the fixture. Therefore, this utility model adopts a simple opening and closing method, which allows for maintenance and repair at any time, improving the applicability and service life of the equipment.

[0017] Furthermore, mounting brackets 22 are provided on both the left and right sides of the lower mold frame 2, and the mounting brackets 22 are provided with positioning holes 23 adapted to external testing equipment. The lower mold frame 2 can be quickly installed and removed from the testing platform through the mounting brackets 22 and the positioning holes 23.

[0018] Furthermore, a plurality of mounting holes 13 are provided on the upper end face of the upper pressure plate 10. The upper pressure module 1 can be quickly installed on the lower pressure platform of the testing equipment through the mounting holes 13.

[0019] Furthermore, a connector mounting plate 24 is provided on the rear end face of the lower mold frame 2, and the quick-connect connector 3 is detachably mounted on the connector mounting plate 24. A suitable connector can be replaced on the connector mounting plate 24 according to actual usage requirements.

[0020] Furthermore, four positioning posts 25 are arrayed inside the lower mold frame 2. The positioning posts 25 penetrate the bottom of the lower mold frame 2 and extend to the outside of the lower mold frame 2. During the rapid installation of the lower mold frame 2 with the test platform, the positioning posts 25 assist in positioning, improving the accuracy and convenience of the installation.

[0021] Furthermore, handle openings 26 are provided on both the left and right side walls of the lower mold frame 2. Workers can directly lift the lower mold frame 2 through the handle openings 26, enabling quick installation and removal from the testing platform.

[0022] Furthermore, the upper pressing module 1 and the lower mold frame 2 are made of aluminum alloy, high-strength fiberglass, copper, or steel. The upper pressing module 1 and the lower mold frame 2 adopt lightweight materials and a compact structural layout to minimize the weight of the fixture.

[0023] Finally, a quick-locking buckle 4 is also provided on the other side of the lower mold frame 2 corresponding to the hinge 20. The quick-locking buckle 4 includes a locking buckle 40 fixedly mounted on the signal transfer plate 21 and a base 41 fixedly mounted on the lower mold frame 2. A pressing lever 42 is rotatably connected to the base 41, and a locking ring 43 adapted to the locking buckle 40 is provided at the upper end of the pressing lever 42. The lower mold frame 2 and the signal transfer plate 21 are locked together using a traditional buckle, which improves the ease of opening and closing and makes subsequent maintenance and repair more convenient.

[0024] The upper pressure module 1 is connected to the lower mold frame 2 via a horn-shaped ribbon cable and a quick-connect connector 3, and is electrically connected to the host of the test platform. It performs tests on the PCB board's current, resistance, bandwidth, capacitance, rapid verification, and other performance parameters to screen out potentially faulty PCB board components and ensure the reliability of the PCB board. During operation, the upper pressure module 1 is first quickly installed onto the lower pressure platform of the test equipment through the mounting holes 13. Then, the lower mold frame 2 is aligned directly below the upper pressure module 1, and positioned using the positioning posts 25 and positioning holes 23. The mounting bracket 22 is used to fix the module onto the test platform. The PCB board test is completed by pressing down on the test platform.

[0025] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A test fixture for use on micro PCBs, characterized in that: The device includes an upper pressure module (1) and a lower mold frame (2). The upper pressure module (1) includes an upper pressure plate (10) and an upper needle plate (11). The lower end face of the upper pressure plate (10) is fixedly connected to the upper needle plate (11) through several support columns (12). A signal transfer plate (21) is hinged to any end of the upper surface of the lower mold frame (2) through a hinge (20). Several quick-connect connectors (3) are provided on the upper end face of the upper needle plate (11) and on the lower mold frame (2). The upper pressure module (1) and the lower mold frame (2) are electrically connected by a horn-shaped ribbon cable.

2. The test fixture for micro PCB boards according to claim 1, characterized in that: Mounting brackets (22) are provided on both the left and right sides of the lower mold frame (2), and the mounting brackets (22) are provided with positioning holes (23) that are compatible with external testing equipment.

3. A test fixture for micro PCB boards according to claim 2, characterized in that: A plurality of mounting holes (13) are provided on the upper end face of the upper pressure plate (10).

4. A test fixture for micro PCB boards according to claim 3, characterized in that: A connector mounting plate (24) is also provided on the rear end face of the lower mold frame (2), and the quick-connect connector (3) is detachably mounted on the connector mounting plate (24).

5. A test fixture for micro PCB boards according to claim 4, characterized in that: The lower mold frame (2) is provided with four positioning posts (25) arranged in an array inside. The positioning posts (25) penetrate the bottom of the lower mold frame (2) and extend to the outside of the lower mold frame (2).

6. A test fixture for micro PCB boards according to claim 5, characterized in that: Handle openings (26) are provided on both the left and right side walls of the lower mold frame (2).

7. A test fixture for micro PCB boards according to claim 6, characterized in that: The upper pressure module (1) and the lower mold frame (2) are made of aluminum alloy, high-strength glass fiber, copper, or steel.

8. A test fixture for micro PCB boards according to claim 7, characterized in that: A quick-locking buckle (4) is also provided on the other side of the lower mold frame (2) corresponding to the hinge (20). The quick-locking buckle (4) includes a locking buckle (40) fixedly installed on the signal transducer plate (21) and a base (41) fixedly installed on the lower mold frame (2). A pressing lever (42) is rotatably connected to the base (41). A locking ring (43) adapted to the locking buckle (40) is provided at the upper end of the pressing lever (42).

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