CN220230912U - Test fixture of backlight unit - Google Patents

Abstract

The utility model relates to the technical field of backlight module testing, and discloses a backlight module testing jig which comprises a testing table, wherein a detection groove is formed in the upper surface of the testing table, a testing component is arranged above the detection groove, a first movable frame is arranged at two ends of one side inside the detection groove, a second movable frame is arranged at two ends of the other side inside the detection groove, the first movable frame and the second movable frame which are positioned at one end inside the detection groove are fixedly connected, a rubber gasket is fixedly arranged on the side wall of a connecting frame, the rubber gasket can be buffered when the rubber gasket is contacted with the corner part of the backlight module, the corner part of the backlight module is prevented from being damaged when the rubber gasket is fixedly contacted with the sliding block, the sliding block arranged on the lower surface of the connecting frame is connected in a sliding groove in a sliding way, the sliding block can be buffered through a supporting spring, the connecting frame is fixedly contacted with the backlight module through the elasticity of the supporting spring, and the pressure generated when the connecting frame is contacted with the backlight module can be effectively reduced.

Description

Test fixture of backlight unit

Technical Field

The present utility model relates to a backlight module testing jig, and more particularly to a backlight module testing jig.

Background

In order to ensure better brightness of the liquid crystal display, when the backlight module is developed as an important component, the optical performance of the backlight module needs to be tested, so that the relative positions and angles of the backlight module and the light source are determined, and the brightness, angle and uniformity of the light emitted from the backlight module are good.

Among the prior art, authorize a backlight unit test fixture that publication number is CN217845592U, including workstation and backlight module, the front end fixedly connected with fixing base at workstation top, the front end of fixing base is provided with T shape spout, the equal sliding connection of the inner wall left and right sides of T shape spout has T shape slider, the equal fixedly connected with grip block one of front end of two T shape sliders, the equal fixedly connected with fixed plate in the left and right sides of workstation top front end, the equal fixedly connected with telescopic link in middle part of two fixed plate opposite sides, the top middle part of workstation is provided with the square groove. According to the utility model, under the mutual coordination of the fixed plate, the telescopic rod, the clamping block I, the handle, the threaded rod, the moving block, the sliding rod, the sliding block II and the tightening bolt, the clamping and fixing of backlight modules with different sizes are realized, and the use flexibility of the whole device is improved.

In the above technical scheme, the clamp is driven by a mechanical mode to fix the backlight module, and the clamp is in hard contact with the backlight module, does not have a buffer structure, and is extremely easy to cause damage to the backlight module during fixing, so we propose a test fixture of the backlight module.

Disclosure of Invention

The utility model provides a testing jig for a backlight module, which solves the technical problems that the backlight module is fixed by driving a clamp in a mechanical mode, the clamp is in hard contact with the backlight module, and the clamp does not have a buffer structure, so that the backlight module is easy to damage during the fixing.

In order to solve the technical problems, the utility model provides a testing jig for a backlight module, which comprises a testing table, wherein the upper surface of the testing table is provided with a detection groove, a testing component is arranged above the detection groove, both ends of one side in the detection groove are respectively provided with a first movable frame, both ends of the other side in the detection groove are respectively provided with a second movable frame, the first movable frame and the second movable frame which are positioned at one end in the detection groove are fixedly connected, and the first movable frame and the second movable frame are respectively provided with a connecting component for connecting the backlight module.

Preferably, a guide block is fixedly mounted on the lower surface of each first movable frame, and each guide block is slidably mounted in a guide groove arranged in the detection groove.

Preferably, the two guide blocks are connected with a driving assembly, the driving assembly comprises two thread sleeves and a bidirectional screw, the positive and negative threads of the bidirectional screw are respectively in threaded connection with the two thread sleeves, and the two thread sleeves are respectively and fixedly installed on the two guide blocks.

Preferably, one end of the bidirectional screw rod is rotatably arranged on the inner wall of the guide groove, the other end of the bidirectional screw rod is fixedly connected with the output end of the driving motor, and the driving motor is arranged inside the test board.

Preferably, the connecting assembly comprises a connecting frame, a rubber gasket is fixedly arranged on the side wall of the connecting frame, a sliding block is fixedly arranged on the lower surface of the connecting frame, and the sliding block is slidably arranged in a sliding groove on the upper surfaces of the first movable frame and the second movable frame.

Preferably, a supporting spring is arranged in the sliding groove, and the end part of the supporting spring is fixedly connected with the sliding block.

Preferably, the testing assembly comprises a portal frame, the portal frame is fixedly arranged on the upper surface of the testing table, an electric push rod is arranged on the portal frame, a testing probe is arranged at the output end of the electric push rod, and the testing probe is arranged above the detection groove.

Compared with the related art, the testing jig for the backlight module has the following beneficial effects:

when using, through the lateral wall fixed mounting at the link, can cushion when contacting with backlight unit corner position, hard contact when avoiding fixing, lead to backlight unit corner position to appear damaging the phenomenon, through link lower surface mounting's slider sliding connection in the spout, can cushion through supporting spring to adopt supporting spring's elasticity to make link and backlight unit contact fixed, can effectively reduce the contact and produce pressure.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a testing fixture of a backlight module;

FIG. 2 is an enlarged schematic view of the test fixture of the backlight module shown in FIG. 1;

FIG. 3 is a schematic diagram of a testing assembly of a testing fixture of a backlight module;

FIG. 4 is a schematic diagram of a driving assembly of a testing fixture of a backlight module;

fig. 5 is a schematic structural diagram of a connection assembly of a testing fixture of a backlight module.

Reference numerals in the drawings: 1. a test bench; 2. a detection groove; 3. a testing component; 31. a portal frame; 32. an electric push rod; 33. a test probe; 4. a first movable frame; 5. a guide block; 6. a guide groove; 7. a drive assembly; 71. a bidirectional screw; 72. a thread sleeve; 73. a driving motor; 8. a connection assembly; 81. a connecting frame; 82. a rubber gasket; 83. a slide block; 84. a chute; 85. a support spring; 9. and a second movable frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

An embodiment I is given by fig. 1-5, the utility model relates to a testing jig for a backlight module, which comprises a testing table 1, wherein the upper surface of the testing table 1 is provided with a testing groove 2, a testing component 3 is arranged above the testing groove 2, both ends of one side in the testing groove 2 are provided with a first movable frame 4, both ends of the other side in the testing groove 2 are provided with a second movable frame 9, the first movable frame 4 positioned at one end in the testing groove 2 is fixedly connected with the second movable frame 9, and both the first movable frame 4 and the second movable frame 9 are provided with a connecting component 8 for connecting the backlight module.

In this embodiment, the lower surface of each first movable frame 4 is fixedly provided with a guide block 5, each guide block 5 is slidably mounted in a guide groove 6 arranged in the detection groove 2, two guide blocks 5 are connected with a driving assembly 7, the driving assembly 7 comprises two threaded sleeves 72 and two bidirectional screws 71, the front and back threads of the bidirectional screws 71 are respectively in threaded connection with the two threaded sleeves 72, the two threaded sleeves 72 are respectively fixedly mounted on the two guide blocks 5, one end of the bidirectional screws 71 is rotatably mounted on the inner wall of the guide groove 6, the other end of the bidirectional screws 71 is fixedly connected with the output end of a driving motor 73, the driving motor 73 is mounted in the test bench 1, and in use, the bidirectional screws 71 can be driven to rotate through the driving motor 73 and the two threaded sleeves 72, and the two threaded sleeves 72 can drive the two guide blocks 5 and the first movable frames 4 and the second movable frames 9 to synchronously move so as to position the backlight module.

In this embodiment, coupling assembling 8 includes link 81, the lateral wall fixed mounting of link 81 has rubber gasket 82, fixed surface installs slider 83 under the link 81, slider 83 slidable mounting is in the spout 84 of first movable shelf 4 and second movable shelf 9 upper surface, spout 84 internally mounted has supporting spring 85, supporting spring 85 tip and slider 83 fixed connection, through the lateral wall fixed mounting at link 81 has rubber gasket 82, can cushion when contacting with backlight unit corner position, avoid fixed time contact, lead to backlight unit corner position to appear damaging the phenomenon, surface mounting's slider 83 sliding connection is in spout 84 under the link 81, can cushion through supporting spring 85, and adopt the elasticity of supporting spring 85 to make link 81 and backlight unit contact fixed, can effectively reduce the contact and produce pressure.

In this embodiment, the test assembly 3 includes a portal frame 31, the portal frame 31 is fixedly installed on the upper surface of the test bench 1, an electric push rod 32 is installed on the portal frame 31, a test probe 33 is installed at the output end of the electric push rod 32, the test probe 33 is arranged above the test slot 2, and during detection, the electric push rod 32 pushes the test probe 33 to move towards the backlight module below, and the test probe 33 detects the backlight module.

Working principle:

when the backlight module is used, the driving motor 73 can drive the bidirectional screw 71 to rotate, the bidirectional screw 71 is in threaded connection with the two threaded sleeves 72, the two threaded sleeves 72 can be driven to drive the two guide blocks 5, the first movable frame 4 and the second movable frame 9 to synchronously move, and the backlight module is positioned.

Through the lateral wall fixed mounting at link 81 has rubber gasket 82, can cushion when contacting with backlight unit corner position, avoid fixed time hard contact, lead to backlight unit corner position to appear damaging the phenomenon, through link 81 lower surface mounting's slider 83 sliding connection in spout 84, can cushion through supporting spring 85 to adopt supporting spring 85's elasticity to make link 81 and backlight unit contact fixed, can effectively reduce the contact and produce pressure.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides a test fixture of backlight unit, includes testboard (1), its characterized in that: the test bench (1) upper surface is provided with detection groove (2), the top of detection groove (2) is provided with test assembly (3), the both ends of detection groove (2) inside one side all are provided with first movable frame (4), the both ends of the inside opposite side of detection groove (2) all are provided with second movable frame (9), are located the inside one end of detection groove (2) first movable frame (4) and second movable frame (9) fixed connection, all be provided with on first movable frame (4) and second movable frame (9) and be used for connecting backlight unit's coupling assembling (8).

2. The testing jig of a backlight module according to claim 1, wherein a guide block (5) is fixedly mounted on the lower surface of each first movable frame (4), and each guide block (5) is slidably mounted in a guide groove (6) provided in the detection groove (2).

3. The testing jig of a backlight module according to claim 2, wherein two guide blocks (5) are connected with a driving assembly (7), the driving assembly (7) comprises two threaded sleeves (72) and a bidirectional screw (71), the positive and negative threads of the bidirectional screw (71) are respectively in threaded connection with the two threaded sleeves (72), and the two threaded sleeves (72) are respectively and fixedly installed on the two guide blocks (5).

4. A backlight module testing jig according to claim 3, wherein one end of the bidirectional screw (71) is rotatably mounted on the inner wall of the guide groove (6), the other end of the bidirectional screw (71) is fixedly connected with the output end of the driving motor (73), and the driving motor (73) is mounted inside the testing table (1).

5. The testing jig of a backlight module according to claim 1, wherein the connecting assembly (8) comprises a connecting frame (81), a rubber gasket (82) is fixedly arranged on the side wall of the connecting frame (81), a sliding block (83) is fixedly arranged on the lower surface of the connecting frame (81), and the sliding block (83) is slidably arranged in a sliding groove (84) on the upper surfaces of the first movable frame (4) and the second movable frame (9).

6. The backlight module testing jig according to claim 5, wherein a supporting spring (85) is installed inside the chute (84), and an end of the supporting spring (85) is fixedly connected with the slider (83).

7. The backlight module testing jig according to claim 1, wherein the testing assembly (3) comprises a portal frame (31), the portal frame (31) is fixedly installed on the upper surface of the testing table (1), an electric push rod (32) is installed on the portal frame (31), a testing probe (33) is installed at the output end of the electric push rod (32), and the testing probe (33) is arranged above the detection groove (2).