A tool for testing an FPC connector interface

Abstract

The utility model discloses a kind of FPC connector interface test with fixture, belong to testing device technical field.The utility model includes jig ontology, jig ontology has probe card and briquetting, briquetting is cooperated in the top of probe card, the top of probe card is equipped with placing groove, the both sides of placing groove are slidably cooperated with L-shaped plate, through hole is equipped in probe card, double-end screw is cooperated in through hole, the end of two L-shaped plates is equipped with threaded hole.The utility model is cooperated with L-shaped plate by setting, and double-end screw can be driven two L-shaped plates along preset track movement, to form a right-angle positioning reference that can be flexibly adjusted according to the size of the plate to be measured, when the FPC plate to be measured is placed, its adjacent two sides can be directly and closely contacted with the inner side of L-shaped plate, realizes quick initial positioning, effectively avoids the tedious process of repeated manual adjustment, significantly improves the versatility and line-changing efficiency of test fixture.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a fixture for testing FPC connector interfaces. Background Technology

[0002] In the production and testing process of LCD modules (LCMs), testing the FPC connector interface is a crucial step in ensuring the reliable electrical performance of the display module. Currently, the industry commonly uses probe-based test fixtures, which use clamping blocks to fix the FPC board under test onto a base, ensuring full contact between the connector contacts and probes to complete the signal transmission test. These fixtures typically rely on fixed positioning structures or simple baffles for initial positioning of the board under test, followed by adjustments to achieve precise alignment. However, they cannot flexibly adapt to FPC boards of different sizes or connector positions. Changing product types requires overall adjustments or replacement of fixture components, leading to extended preparation time and increased costs. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for testing FPC connector interfaces. By setting up L-shaped plates that move in opposite directions, it solves the problem that the fixture cannot flexibly adapt to FPC boards of different sizes.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model is a fixture for testing FPC connector interfaces, including a fixture body, a probe plate and a pressure block, the pressure block being fitted on the top of the probe plate, a placement groove being provided on the top of the probe plate, L-shaped plates being slidably fitted on both sides of the placement groove, a through hole being provided on the probe plate, a double-ended screw being fitted in the through hole, and threaded holes being provided at the ends of the two L-shaped plates, the two L-shaped plates being threadedly fitted to the two ends of the double-ended screw through the threaded holes respectively.

[0006] Furthermore, convex blocks are installed at the bottom of both L-shaped plates, and convex grooves are opened on both sides of the probe plate. The two convex blocks slide and fit into the corresponding convex grooves respectively.

[0007] Furthermore, an extension block is sleeved at the end of the double-ended screw, and a through hole is provided on the extension block. A positioning pin is slidably fitted inside the through hole. The end of the probe plate is provided with a positioning hole in an annular shape, and the end of the positioning pin is fitted inside the positioning hole.

[0008] Furthermore, a probe body is provided at the bottom of the probe plate, and a scale is installed on the probe plate.

[0009] Furthermore, a clearance groove is provided on the probe plate, which is connected to the placement groove.

[0010] Furthermore, a connector is provided at the bottom of the pressure block, and a wire is electrically connected to the connector. A positioning rod is installed at the bottom of the pressure block.

[0011] This utility model has the following beneficial effects:

[0012] This invention uses L-shaped plates that move in opposite directions or away from each other. By rotating a double-headed screw, the two L-shaped plates can be driven to move along a preset track, thereby forming a right-angle positioning reference that can be flexibly adjusted according to the size of the board to be tested. When the FPC board to be tested is placed, its two adjacent sides can be directly close to the inner side of the L-shaped plate, realizing rapid initial positioning, effectively avoiding the tedious process of repeated manual adjustment, significantly improving the versatility of the test fixture and the efficiency of line change, while ensuring the consistency of positioning of different batches of products.

[0013] This invention utilizes a positioning pin and annular positioning hole structure. Once the L-shaped plate is adjusted to the desired position, inserting the positioning pin into any positioning hole will physically lock the double-headed screw, forming a simple and reliable anti-reverse mechanism. This structure ensures the absolute fixation of the L-shaped plate position throughout the entire testing cycle, thereby guaranteeing the stability of the probe and FPC connector contact alignment and improving the reliability and accuracy of the test data.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the jig;

[0016] Figure 2 This is a schematic diagram of the overall structure of the jig;

[0017] Figure 3 This is a schematic diagram of the probe plate structure;

[0018] Figure 4 This is a schematic diagram of the internal structure of the probe plate;

[0019] Figure 5 This is a schematic diagram of the internal structure of the probe plate;

[0020] Figure 6 This is a schematic diagram of the FPC connector body.

[0021] Figure 7 This is a schematic diagram of the FPC connector body.

[0022] In the diagram: 1. Fixture body; 2. Probe plate; 201. Through hole; 202. Convex groove; 203. Relief groove; 204. Placement groove; 205. Positioning hole; 3. Pressure block; 4. Connector; 5. Wire; 6. Probe body; 7. Double-ended screw; 8. L-shaped plate; 801. Threaded hole; 9. Convex block; 10. Extension block; 11. Positioning pin; 12. Scale; 13. Positioning rod; 14. FPC connector body; 15. LCD module interface; 16. Plug-in fixture interface; 17. Snap-on fixture interface. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] Please see Figure 1-5 This utility model provides a technical solution: a fixture for testing FPC connector interfaces, including a fixture body 1, a probe plate 2 and a pressure block 3, a connector 4 at the bottom of the pressure block 3, and a wire 5 electrically connected to the connector 4. A clearance groove 203 is provided on the probe plate 2, which communicates with a placement groove 204 to facilitate the removal of the FPC board. A probe body 6 is provided at the bottom of the probe plate 2, and the probe body 6 contacts the FPC connector body 14. The pressure block 3 is fitted onto the top of the probe plate 2, and a positioning device is installed at the bottom of the pressure block 3. The probe plate 2 has holes that mate with the positioning rod 13. The pressure block 3 can be precisely pressed onto the top of the probe plate 2 by mates with the positioning rod 13 at its bottom and the holes on the probe plate 2, ensuring stability during testing. After fixing the FPC board, the pressure block 3 is pressed down so that the positioning rod 13 at its bottom is inserted into the probe plate 2. The connector 4 at the bottom of the pressure block 3 contacts the board to be tested and is connected to the test equipment through the wire 5. Electrical performance testing can then begin. After the test is completed, the pressure block 3 is lifted and the tested FPC board can be easily removed through the relief groove 203.

[0026] The probe plate 2 has a placement groove 204 on its top, which receives the FPC board to be tested. L-shaped plates 8 are slidably fitted on both sides of the placement groove 204. A through hole 201 is provided on the probe plate 2, and a double-ended screw 7 is fitted into the through hole 201. The two ends of the double-ended screw 7 are machined with threads in opposite directions. Threaded holes 801 are provided at the ends of the two L-shaped plates 8, and the two L-shaped plates 8 are threadedly fitted to the two ends of the double-ended screw 7 through the threaded holes 801. The bottom of each probe plate 2 is equipped with a convex block 9, and both sides of the probe plate 2 are provided with convex grooves 202. The two convex blocks 9 are slidably engaged in the corresponding convex grooves 202. The convex blocks 9 provide a guide for the movement of the L-shaped plate 8, and on the other hand, prevent the L-shaped plate 8 from tilting upwards when under pressure, thus ensuring the stability of the positioning. The end of the double-ended screw 7 is sleeved with an extension block 10. The extension block 10 is provided with a through hole, and a positioning pin 11 is slidably engaged in the through hole. The end of the probe plate 2 is annularly open. The device includes a positioning hole 205, with the end of the positioning pin 11 fitting into the positioning hole 205. A scale 12 is mounted on the probe plate 2, allowing the operator to visually read the movement of the L-shaped plate 8. When using this device, the double-ended screw 7 is rotated according to the size of the FPC board to be tested. The reverse threads at both ends of the double-ended screw 7 drive the two L-shaped plates 8 to move synchronously along the convex groove 202 until the distance between the inner sides of the two L-shaped plates 8 is slightly larger than the size of the FPC board to be tested. The FPC board to be tested is then placed into the placement groove 204 to complete the initial positioning. If fine adjustment is required, the double-ended screw 7 can be rotated slightly again to move the L-shaped plates 8 slightly, pushing the board to be tested to the precise test position. At this time, the connector contacts on the FPC board to be tested are precisely aligned with the probe body 6. After adjustment, the positioning pin 11 is inserted into the positioning hole 205 through the through hole to lock the position of the double-ended screw 7, firmly locking the double-ended screw 7 to prevent accidental rotation during subsequent testing.

[0027] Example 2:

[0028] Please see Figure 6-7 It also includes an FPC connector body 14, with an LCD module interface 15 at one end. The LCD module interface 15 connects to the connector of the product. The other end of the FPC connector body 14 is provided with a multi-functional interface assembly. The multi-functional interface assembly includes at least one plug-in fixture interface 16 and at least one snap-fit ​​fixture interface 17. The plug-in fixture interface 16 can be plugged into the connectors of different fixture bodies 1 respectively, and the snap-fit ​​fixture interface 17 can be snapped into the connectors of different fixture bodies 1 respectively. According to the type of the fixture body 1 to be tested, the matching interface is selected, so that one FPC connector can support multiple types of interfaces. By integrating multiple interface forms on one FPC at the same time, a single FPC connector is widely compatible with multiple test fixtures, reducing the need for different test equipment and improving the flexibility of use.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fixture for testing FPC connector interfaces, comprising a fixture body (1), characterized in that: The fixture body (1) has a probe plate (2) and a pressure block (3), the pressure block (3) being fitted on the top of the probe plate (2); The top of the probe plate (2) is provided with a placement groove (204), and both sides of the placement groove (204) are slidably fitted with L-shaped plates (8); The probe plate (2) has a through hole (201) and a double-ended screw (7) is fitted inside the through hole (201). The ends of the two L-shaped plates (8) are each provided with a threaded hole (801). The two L-shaped plates (8) are threadedly fitted to the two ends of the double-ended screw (7) through the threaded holes (801).

2. The FPC connector interface testing fixture according to claim 1, characterized in that, The bottom of each of the two L-shaped plates (8) is equipped with a convex block (9), and the probe plate (2) has convex grooves (202) on both sides. The two convex blocks (9) are slidably fitted in the corresponding convex grooves (202).

3. The FPC connector interface testing fixture according to claim 1, characterized in that, The end of the double-headed screw (7) is fitted with an extension block (10), the extension block (10) has a through hole, and a positioning pin (11) is slidably fitted in the through hole. The end of the probe plate (2) has a positioning hole (205) in an annular shape, and the end of the positioning pin (11) fits in the positioning hole (205).

4. The FPC connector interface testing fixture according to claim 1, characterized in that, The probe plate (2) is provided with a probe body (6) at the bottom, and a scale (12) is installed on the probe plate (2).

5. A fixture for testing FPC connector interfaces according to claim 4, characterized in that, The probe plate (2) is provided with a clearance groove (203), which is connected to the placement groove (204).

6. The FPC connector interface testing fixture according to claim 1, characterized in that, The bottom of the pressure block (3) is provided with a connector (4), and a wire (5) is electrically connected to the connector (4). A positioning rod (13) is installed at the bottom of the pressure block (3).

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