Display screen FPC test fixture

Abstract

The utility model discloses a display screen FPC test fixture, which comprises a base, a first mounting rack is fixedly arranged at the upper end of one side of the base, a sliding chute is arranged at the upper part in the base, the sliding chute is of an open structure, a movable seat is arranged at the middle position in the sliding chute, and the movable seat is connected with the first mounting rack. A second mounting frame is fixedly arranged on one side of the upper end of the moving seat, through holes are formed in the front end and the rear end of the interior of a second mounting frame transverse plate, the through holes are symmetrically formed, two pull rods are arranged above the second mounting frame transverse plate, the pull rods correspond to the through holes in position, and the pull rods extend to the position below the second mounting frame through the through holes; an extrusion plate is fixedly arranged at the lower end of the pull rod, a second spring is fixedly arranged at the upper end, located outside the pull rod, of the extrusion plate, the other end of the second spring is fixedly connected with the second mounting frame, and the structure solves the problems that the adaptability of the test jig to different display screen FPCs is not good enough, and the test jig is difficult to fix the display screen FPCs.

Description

Technical Field

[0001] This utility model relates to the field of display screen testing technology, specifically a display screen FPC testing fixture. Background Technology

[0002] A display screen FPC test fixture is a tool specifically designed for testing and verifying the FPC circuit boards in a display screen. It is primarily used for testing the electrical performance of FPC circuit boards in displays, including but not limited to mobile phone screens, LCDs, and TFT displays. This fixture can perform comprehensive testing and verification of FPC circuit boards, including resistance testing, continuity testing, and insulation testing, to ensure they meet design requirements and standards.

[0003] For example, Chinese patent CN221746224U, entitled "A Test Fixture for Display Screen FPC", includes a placement frame. The placement frame includes a frame body and a placement plate disposed on one side of the frame body. A limiting groove is formed on the placement plate. A mounting plate is provided on the side of the frame body near the limiting groove. A testing mechanism is provided on the mounting plate. A connecting groove is provided on the side of the placement plate near the limiting groove. The testing mechanism is correspondingly disposed with the connecting groove. The display screen FPC test fixture also includes a base disposed on the lower side of the placement frame. The placement frame is rotatably disposed on the base via a rotating shaft. The testing mechanism includes a test probe module disposed on the mounting plate and a test connector disposed on the mounting plate.

[0004] While the existing technologies can test FPCs for displays, in practical use, the test fixtures are not well adapted to different FPCs. The clamping mechanisms at the FPC connections are usually fixed, making it difficult for different FPC models to adapt to the clamping structure. Furthermore, the test fixtures are not designed to secure the FPCs properly. Typically, the FPCs are placed on a platform and secured only at the connections, which can lead to tearing under external force, affecting test results. Therefore, these technologies do not meet current requirements. To address this, we propose a new FPC test fixture for displays. Utility Model Content

[0005] The purpose of this utility model is to provide a test fixture for display screen FPCs to solve the problems mentioned in the background art, such as the poor adaptability of the test fixture to different display screen FPCs and the difficulty in fixing the display screen FPCs with the test fixture.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a display screen FPC testing fixture, comprising a base, a first mounting bracket fixedly disposed on the upper end of one side of the base, a sliding groove disposed on the upper part of the first mounting bracket, the sliding groove having an open structure, a movable seat disposed at the middle position inside the sliding groove, a second mounting bracket fixedly disposed on one side of the upper end of the movable seat, through holes disposed at both the front and rear ends of the interior of the horizontal plate of the second mounting bracket, the through holes being symmetrically arranged, two pull rods disposed on the upper part of the horizontal plate of the second mounting bracket, the pull rods corresponding to the positions of the through holes, and the pull rods extending through the through holes to the lower part of the second mounting bracket, a pressing plate fixedly disposed on the lower end of the pull rods, a second spring fixedly disposed on the upper end of the pressing plate outside the pull rods, the other end of the second spring being fixedly connected to the second mounting bracket.

[0007] Preferably, a lead screw is provided inside the slide groove, with both the front and rear ends of the lead screw rotatably connected to the inner wall of the slide groove, and the lead screw passes through the movable seat. A servo motor is fixedly installed on the outside of the first mounting bracket, and the output shaft of the servo motor extends into the interior of the slide groove and is fixedly connected to the lead screw.

[0008] Preferably, a placement platform is provided above the middle position of the base, and threaded holes are provided at the four corners of the upper part of the placement platform. The upper end of the threaded hole is open, and a first bolt is provided inside the threaded hole. The upper end of the first bolt extends to the upper part of the placement platform, and a spring sheet is sleeved on the outside of the first bolt above the placement platform.

[0009] Preferably, a first spring is provided at the lower end of the spring sheet outside the first bolt, and the other end of the first spring is fixedly connected to the base.

[0010] Preferably, the front and rear ends of the upper end of the placement platform are provided with retrieval slots, and the retrieval slots have an open structure.

[0011] Preferably, a fixed seat is fixedly provided at both the front and rear ends on the other side of the upper end of the movable seat. A second bolt is provided on one side of the outer side of the fixed seat. The second bolt passes through and extends to the other side of the fixed seat. A positioning plate is fixedly provided at one end of the second bolt on the other side of the fixed seat. The positioning plate is rotatably connected to the second bolt, and the positioning plate is slidably engaged with the movable seat.

[0012] Preferably, support rods are fixedly installed at the four corners of the lower end of the placement platform, and the lower ends of the support rods are fixedly connected to the base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model can fix different models of display screen FPC and test FPC by means of a movable seat and a pull rod. When fixing the connection between the display screen FPC and the test FPC, the display screen FPC and the test FPC are placed on the placement table and the movable seat respectively. At this time, the servo motor is turned on, and the output shaft of the servo motor drives the lead screw to rotate. The rotation of the lead screw drives the movable seat to move until the movable seat is moved to a suitable position. At this time, the operator pulls the pull rod upward, so that the pull rod drives the extrusion plate to move upward on the second mounting bracket. At the same time, the second spring is in a compressed state. Then the display screen FPC and the test FPC are placed below the extrusion plate and connected. At this time, the pull rod is released, the second spring is reset and drives the extrusion plate to move downward until the lower end of the extrusion plate extrudes the connection between the display screen FPC and the test FPC, thereby improving the adaptability of the test fixture to different display screen FPCs.

[0015] (2) This utility model can clamp and fix the display screen FPC by means of the first spring and the spring plate. When fixing the display screen FPC, first rotate the first bolt so that the first bolt moves upward in the threaded hole through the external thread. At this time, the compression and fixation of the spring plate is released and the spring plate is rotated to a suitable position. Then, the display screen FPC is placed on the upper end of the placement platform and the spring plate is rotated again so that the spring plate is above the display screen FPC. At this time, rotate the first bolt so that the first bolt moves downward in the threaded hole and the operator keeps the position of the spring plate unchanged. At this time, the first bolt compresses the spring plate, and at the same time, the lower end of the spring plate compresses the first spring, so that the spring plate clamps and fixes the display screen FPC on the upper end of the placement platform, thereby reducing the possibility of the display screen FPC tearing under the action of external force.

[0016] (3) This utility model can position the test FPC using a positioning plate and a second bolt. Before testing, the position of the positioning plate is adjusted according to the size of the test FPC. At this time, the operator rotates the two second bolts at the same time, so that the second bolts move on the fixed seat through the external threads. At the same time, one end of the second bolt rotates on the positioning plate and drives the positioning plate to slide on the moving seat until the positioning plate is moved to the appropriate position. Then the test FPC is placed between the positioning plates. The second bolts are rotated again, and the positioning plates are moved towards each other until the side wall of the positioning plate contacts the test FPC, thereby improving the efficiency of the display screen FPC test. Attached Figure Description

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

[0018] Figure 2 This is a front view of the internal structure of this utility model;

[0019] Figure 3 This is a side view of the internal structure of this utility model;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle.

[0021] In the diagram: 1. Base; 2. Support rod; 3. Placement platform; 4. First bolt; 5. Spring plate; 6. First spring; 7. Picking slot; 8. First mounting bracket; 9. Slide groove; 10. Servo motor; 11. Lead screw; 12. Moving seat; 13. Second mounting bracket; 14. Pull rod; 15. Extrusion plate; 16. Second spring; 17. Positioning plate; 18. Fixed seat; 19. Second bolt; 20. Threaded hole; 21. Through hole. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 An embodiment of this utility model provides a test fixture for a display screen FPC, including a base 1, a first mounting bracket 8 fixedly installed on the upper end of one side of the base 1, and a pick-up slot 7 provided at both the front and rear ends of the upper end of the placement platform 3. The pick-up slot 7 has an open structure, and a support rod 2 is fixedly installed at the four corners of the lower end of the placement platform 3. The lower end of the support rod 2 is fixedly connected to the base 1.

[0024] Please see Figure 1 , Figure 2 and Figure 4 The first mounting bracket 8 has a sliding groove 9 at its upper part. The sliding groove 9 has an open structure. A movable seat 12 is located in the middle of the sliding groove 9. A second mounting bracket 13 is fixedly mounted on one side of the upper end of the movable seat 12. The second mounting bracket 13 has through holes 21 at both its front and rear ends on its horizontal plate. The through holes 21 are symmetrically arranged. Two pull rods 14 are located above the horizontal plate of the second mounting bracket 13. The pull rods 14 correspond to the positions of the through holes 21 and extend through the through holes 21 to the lower part of the second mounting bracket 13. A pressing plate 15 is fixedly mounted on the lower end of the pull rods 14. A second spring 16 is fixedly installed on the upper end of the extrusion plate 15 outside the pull rod 14. The other end of the second spring 16 is fixedly connected to the second mounting bracket 13. A lead screw 11 is installed inside the slide groove 9. The front and rear ends of the lead screw 11 are rotatably connected to the inner wall of the slide groove 9, and the lead screw 11 passes through the moving seat 12. A servo motor 10 is fixedly installed on the outside of the first mounting bracket 8. The output shaft of the servo motor 10 extends into the interior of the slide groove 9 and is fixedly connected to the lead screw 11, so as to improve the adaptability of the test fixture to different display screen FPCs through the moving seat 12 and the pull rod 14.

[0025] Please see Figure 1 and Figure 3 A placement platform 3 is provided above the middle position of the base 1. Threaded holes 20 are provided at the four corners of the upper end of the placement platform 3. The upper end of the threaded holes 20 is open. A first bolt 4 is provided inside the threaded holes 20. The upper end of the first bolt 4 extends to the upper part of the placement platform 3. A spring plate 5 is sleeved on the outside of the first bolt 4 above the placement platform 3. A first spring 6 is provided at the lower end of the spring plate 5 outside the first bolt 4. The other end of the first spring 6 is fixedly connected to the base 1, which facilitates the fixation of the display screen FPC through the spring plate 5.

[0026] Please see Figure 1 and Figure 2 Fixed seats 18 are fixedly installed at the front and rear ends of the other side of the upper end of the movable seat 12. A second bolt 19 is provided on one side of the outside of the fixed seat 18. The second bolt 19 passes through and extends to the other side of the fixed seat 18. A positioning plate 17 is fixedly installed at one end of the second bolt 19 on the other side of the fixed seat 18. The positioning plate 17 is rotatably connected to the second bolt 19, and the positioning plate 17 is slidably engaged with the movable seat 12, so as to facilitate the rapid positioning of the test FPC through the positioning plate 17.

[0027] Working principle: In use, first adjust the position of the positioning plate 17 according to the size of the test FPC. At this time, the operator simultaneously rotates the two second bolts 19, so that the second bolts 19 move on the fixed seat 18 through the external threads. At the same time, one end of the second bolt 19 rotates on the positioning plate 17 and drives the positioning plate 17 to slide on the moving seat 12 until the positioning plate 17 is moved to the appropriate position. Then, place the test FPC between the positioning plates 17, and rotate the second bolts 19 again. The second bolts 19 drive the positioning plates 17 to move towards each other until the side wall of the positioning plate 17 contacts the test FPC. When fixing the display screen FPC, first rotate the first bolt 4, so that the first bolt 4 moves upward in the threaded hole 20 through the external threads. At this time, release the compression fixation of the spring plate 5 and rotate the spring plate 5 to the appropriate position. Then, place the display screen FPC on the upper end of the placement platform 3 and rotate the spring plate 5 again so that the spring plate 5 is above the display screen FPC. At this time, rotate the first bolt 4. Bolt 4 is moved downward in the threaded hole 20, and the operator keeps the spring plate 5 in the same position. At this time, the first bolt 4 compresses the spring plate 5, and at the same time, the lower end of the spring plate 5 compresses the first spring 6, so that the spring plate 5 clamps and fixes the display screen FPC on the upper end of the placement platform 3. At this time, the servo motor 10 is turned on, and the output shaft of the servo motor 10 drives the lead screw 11 to rotate. The rotation of the lead screw 11 drives the moving seat 12 to move until the moving seat 12 is moved to the appropriate position. At this time, the operator pulls the pull rod 14 upward, so that the pull rod 14 drives the extrusion plate 15 to move upward on the second mounting bracket 13. At the same time, the second spring 16 is in a compressed state. Then, the display screen FPC and the test FPC are placed below the extrusion plate 15 and connected. At this time, the pull rod 14 is released, the second spring 16 is reset and drives the extrusion plate 15 to move downward until the lower end of the extrusion plate 15 compresses the connection between the display screen FPC and the test FPC.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A test fixture for a display screen FPC, comprising a base (1), characterized in that: A first mounting bracket (8) is fixedly installed on the upper end of one side of the base (1). A sliding groove (9) is provided on the upper part of the first mounting bracket (8). The sliding groove (9) has an open structure. A movable seat (12) is provided in the middle position inside the sliding groove (9). A second mounting bracket (13) is fixedly installed on one side of the upper end of the movable seat (12). The front and rear ends of the horizontal plate of the second mounting bracket (13) are provided with through holes (21). The through holes (21) are symmetrically arranged. Two pull rods (14) are provided above the horizontal plate of the second mounting bracket (13). The pull rods (14) correspond to the positions of the through holes (21) and extend through the through holes (21) to the bottom of the second mounting bracket (13). A pressing plate (15) is fixedly provided at the lower end of the pull rod (14). A second spring (16) is fixedly provided at the upper end of the pressing plate (15) outside the pull rod (14). The other end of the second spring (16) is fixedly connected to the second mounting bracket (13).

2. The display screen FPC testing fixture according to claim 1, characterized in that: The slide groove (9) is provided with a lead screw (11), the front and rear ends of the lead screw (11) are rotatably connected to the inner wall of the slide groove (9), and the lead screw (11) passes through the moving seat (12). The first mounting bracket (8) is fixedly provided with a servo motor (10), the output shaft of the servo motor (10) extends into the interior of the slide groove (9) and is fixedly connected to the lead screw (11).

3. The display screen FPC testing fixture according to claim 2, characterized in that: A placement platform (3) is provided above the middle position of the base (1). Threaded holes (20) are provided at the four corners of the upper end of the placement platform (3). The upper end of the threaded holes (20) is open. A first bolt (4) is provided inside the threaded holes (20). The upper end of the first bolt (4) extends to the upper part of the placement platform (3). A spring sheet (5) is sleeved on the outside of the first bolt (4) above the placement platform (3).

4. The display screen FPC testing fixture according to claim 3, characterized in that: The lower end of the spring sheet (5) located outside the first bolt (4) is provided with a first spring (6), and the other end of the first spring (6) is fixedly connected to the base (1).

5. A test fixture for a display screen FPC according to claim 4, characterized in that: The front and rear ends of the upper end of the placement platform (3) are provided with retrieval slots (7), which are open structures.

6. A test fixture for a display screen FPC according to claim 5, characterized in that: Fixed seats (18) are fixedly installed at both the front and rear ends of the other side of the upper end of the movable seat (12). A second bolt (19) is provided on one side of the outside of the fixed seat (18). The second bolt (19) passes through and extends to the other side of the fixed seat (18). A positioning plate (17) is fixedly installed at one end of the second bolt (19) on the other side of the fixed seat (18). The positioning plate (17) is rotatably connected to the second bolt (19), and the positioning plate (17) is slidably engaged with the movable seat (12).

7. A test fixture for a display screen FPC according to claim 6, characterized in that: Support rods (2) are fixedly installed at the four corners of the lower end of the placement platform (3), and the lower end of the support rods (2) is fixedly connected to the base (1).

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