Adjustable test fixture applied to bilateral display screen test

Abstract

The utility model discloses an adjustable test fixture applied to a bilateral display screen test. The adjustable test fixture comprises a bottom plate; the test pressure heads are symmetrically mounted on two sides of the bottom plate, the test pressure head on one side is fixedly mounted on the bottom plate, and the test pressure head on the other side is movably mounted on the bottom plate according to the size of the display screen to be tested and is used for driving the false pressure flexible circuit board to press down so as to press test points on two sides of the display screen to be tested for testing. According to the utility model, the double-side crimping test requirement of the display screen is met, and compatibility test can be carried out on different specifications and sizes of similar screen bodies.

Description

Technical Field

[0001] This utility model belongs to the field of screen testing technology, and in particular relates to an adjustable test fixture for testing dual-sided display screens. Background Technology

[0002] Currently, there are no test fixtures on the market that can meet the requirements of double-sided crimping testing for display screens. In addition, display screen test fixtures are generally designed for a single model. When changing to a different model of display screen, a test fixture of the corresponding size needs to be changed, resulting in high testing costs and long processing cycles for the test fixtures. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable test fixture for testing bilateral display screens, so as to solve the problems of the bilateral crimping test requirements of display screens and the inability of the test fixture design to cope with different models of display screens.

[0004] To achieve the above objectives, this utility model is implemented using the following solution:

[0005] This utility model provides an adjustable test fixture for testing dual-sided display screens, comprising:

[0006] Base plate;

[0007] The test heads are symmetrically installed on both sides of the base plate. One test head is fixedly installed on the base plate, while the other test head is moved and installed on the base plate according to the size of the display screen to be tested. It is used to drive the dummy pressure flexible circuit board to press down on the test points on both sides of the display screen to be tested.

[0008] Optionally, the test head includes:

[0009] Pressure head mounting base;

[0010] The pressure head is slidably connected in the pressure head mounting base.

[0011] Optionally, the middle part of the pressure head is slidably connected in a groove opened on the pressure head mounting seat, and the two sides of the pressure head are fixedly connected to the pressure head mounting seat with a first spring.

[0012] Optionally, the test head also includes:

[0013] The rotating support is fixedly connected in the pressure head mounting base;

[0014] The crimping handle is rotatably connected to the rotating support in the middle, one end of which abuts against the middle of the crimping head, and the other end extends out of the crimping head mounting base.

[0015] Optionally, the test head also includes:

[0016] The second spring is fixedly connected between the pressure head mounting base and the bottom of the pressure handle near the other end of the pressure handle.

[0017] Optionally, several mounting holes are provided on the base plate on the side away from one test head and close to the other test head, and first connecting holes are provided on both sides of the pressure head mounting seat of the other test head. The other test head is moved and mounted on the base plate through the first connecting holes, mounting holes and corresponding connectors.

[0018] Optionally, it also includes:

[0019] The limiting block has a first limiting post and a second connecting hole. It is movable and installed on the bottom plate on the side away from the test head and close to the test head on the other side through the second connecting hole, the mounting hole and the corresponding connecting parts.

[0020] The second limiting post is located on both sides of the pressure head mounting base on the other side of the test pressure head;

[0021] The limiting rod passes through and is fixedly connected to the first limiting post and the second limiting post.

[0022] Optionally, it also includes:

[0023] A groove, located below the test head on the other side, is used to accommodate the passage of the flexible circuit board.

[0024] Optionally, it also includes:

[0025] The placement plate, located on the bottom plate on the side away from one test head and close to the other test head, is used to place the flexible circuit board. Beneficial effects

[0026] This invention uses test pressure heads symmetrically installed on both sides of the base plate to drive the dummy pressure flexible circuit board to press down on the test points on both sides of the display screen to be tested, thus meeting the double-sided pressing test requirements of the display screen. One of the test pressure heads can be moved and installed on the base plate according to the size of the display screen to be tested, and can also perform compatibility tests on different specifications and sizes of the same type of screen. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an adjustable test fixture for testing dual-sided display screens provided in this embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the installation structure of the pressure head and the pressing handle inside the pressure head mounting base of an adjustable test fixture for testing dual-sided display screens, provided by an embodiment of this utility model.

[0029] In the diagram: 1. Base plate; 2. Press head mounting base; 3. Display screen; 4. Press head; 5. First spring; 6. Press handle; 7. Mounting hole; 8. Groove; 9. Placement plate; 10. First connecting hole; 11. First limiting post; 12. Second limiting post; 13. Limiting rod; 14. Second connecting hole; 15. Second spring; 16. Rotating support; 17. Limiting block. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model, and should not be used to limit the protection scope of this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only 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.

[0033] like Figure 1 and Figure 2 As shown, this embodiment provides an adjustable test fixture for testing dual-sided display screens. It consists of a base plate 1 and test heads. The test heads are symmetrically mounted on both sides of the base plate. One test head is fixedly mounted on the base plate 1, while the other test head is movable and mounted on the base plate 1 according to the size of the display screen under test. This is used to drive a dummy FPC (flexible printed circuit board) downwards to press down on the test points on both sides of the display screen 3 under test. This adjustable test fixture for dual-sided display screen testing uses test heads symmetrically mounted on both sides of the base plate 1 to drive the dummy flexible printed circuit board downwards to press down on the test points on both sides of the display screen 3 under test, meeting the dual-sided pressing test requirements of the display screen 3. One test head is movable and mounted on the base plate according to the size of the display screen 3 under test, allowing for compatible testing of different sizes of the same type of screen.

[0034] Specifically, the test head consists of a head mounting base 2 and a head 4. The head 4 is slidably connected in the head mounting base 2. The middle part of the head 4 is slidably connected in a groove opened on the head mounting base 2. The two sides of the head 4 are fixedly connected to the head mounting base 2 with first springs 5. A rotating support 16 is fixedly connected in the head mounting base 2. A pressing handle 6 is rotatably connected to the rotating support 16. The middle part of the pressing handle 6 is rotatably connected to the rotating support 16. One end of the pressing handle 6 abuts against the middle part of the head 4, and the other end extends out of the head mounting base 2. A second spring 15 is fixedly connected near the other end of the pressing handle 6 and between the bottom of the head mounting base 2 and the pressing handle 6. The first spring 5 and the second spring 15 enable the head 4 and the pressing handle 6 to have flexible buffering and reset functions during the up and down movement.

[0035] Several mounting holes 7 are opened on the base plate 1 on the side away from the test head and close to the test head on the other side. First connecting holes 10 are opened on both sides of the pressure head mounting seat 2 of the other test head. The test head on the other side is moved and installed on the base plate 1 through the first connecting holes 10, mounting holes 7 and corresponding connecting parts (bolts, etc.) to adjust the test spacing according to the size of the display screen 3 to be tested. A movable limiting block 17 is installed on the base plate 1 on the side away from the test head and close to the test head on the other side. The limiting block 17 has a first limiting post 11 and a second connecting hole 14. The limiting block 17 is installed on the base plate 1 through the second connecting hole 14, the mounting hole 7 and the corresponding connecting parts (bolts, etc.). The pressure head mounting base 2 of the other test head has a second limiting post 12 on both sides. The first limiting post 11 and the second limiting post 12 pass through and are fixedly connected to form a limiting rod 13. The limiting rod 13 limits the limiting block 17 and the test head on the other side in a parallel direction by passing through and fixing the two limiting posts on the limiting block 17 and the pressure head mounting base 2. The limiting block 17 participates in the moving installation process of the test head on the other side on the base plate 1. Through the four-point limiting of the first connecting hole 10 and the second connecting hole 14 on both sides, the test head on the other side is always parallel to the two sides of the display module 3 to be tested during the moving installation, avoiding poor contact or damage to the display module 3 that would lead to test failure.

[0036] In addition, a groove 8 is provided below the test head on the other side. The groove 8 allows the dummy FPC driven by the test head on the other side to pass through quickly to meet the moving and installation requirements of the test head on the other side. A placement plate 9 is provided on the bottom plate 1 on the side away from the test head on one side and close to the test head on the other side. The placement plate 9 is used to place the dummy FPC to prevent the dummy FPC from falling into the groove and being difficult to remove quickly.

[0037] Working principle:

[0038] According to the size of the display module 3 under test, adjust the installation position of the other test head on the base plate 1. First, install the limiting block 17 on the base plate 1 through the second connecting hole 14, the mounting hole 7 and the corresponding connecting parts (bolts, etc.). Then, install the other test head on the base plate 1 through the first connecting hole 10, the mounting hole 7 and the corresponding connecting parts (bolts, etc.) to achieve alignment on both sides. Press the crimping handle 6 that extends out of the crimping head mounting seat 2 on both sides of the test head. Lift the crimping head 4 through the lever principle and put it into the display module 3 under test. Release the crimping handle 6. The crimping head 4 returns to its original position under the action of the first spring 5 to drive the dummy pressure FPC to press down on the test points on both sides of the display screen 3 under test, thereby lighting up the display module 3 under test for testing.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An adjustable test fixture for testing dual-sided display screens, characterized in that, include: Base plate; The test heads are symmetrically installed on both sides of the base plate. One test head is fixedly installed on the base plate, while the other test head is moved and installed on the base plate according to the size of the display screen to be tested. It is used to drive the dummy pressure flexible circuit board to press down on the test points on both sides of the display screen to be tested.

2. The adjustable test fixture for testing dual-sided display screens according to claim 1, characterized in that, The test head includes: Pressure head mounting base; The pressure head is slidably connected in the pressure head mounting base.

3. The adjustable test fixture for testing dual-sided display screens according to claim 2, characterized in that, The middle part of the pressure head is slidably connected in a groove opened on the pressure head mounting base, and the two sides of the pressure head are fixedly connected to the pressure head mounting base with the first spring.

4. The adjustable test fixture for testing dual-sided display screens according to claim 3, characterized in that, The test head also includes: The rotating support is fixedly connected in the pressure head mounting base; The crimping handle is rotatably connected to the rotating support in the middle, one end of which abuts against the middle of the crimping head, and the other end extends out of the crimping head mounting base.

5. The adjustable test fixture for testing dual-sided display screens according to claim 4, characterized in that, The test head also includes: The second spring is fixedly connected between the pressure head mounting base and the bottom of the pressure handle near the other end of the pressure handle.

6. The adjustable test fixture for testing dual-sided display screens according to claim 2, characterized in that, Several mounting holes are made on the base plate on the side away from the test head on one side and close to the test head on the other side. First connecting holes are made on both sides of the pressure head mounting seat of the test head on the other side. The test head on the other side is moved and mounted on the base plate through the first connecting holes, mounting holes and corresponding connectors.

7. The adjustable test fixture for testing dual-sided display screens according to claim 6, characterized in that, Also includes: The limiting block has a first limiting post and a second connecting hole. It is movable and installed on the bottom plate on the side away from the test head and close to the test head on the other side through the second connecting hole, the mounting hole and the corresponding connecting parts. The second limiting post is located on both sides of the pressure head mounting base on the other side of the test pressure head; The limiting rod passes through and is fixedly connected to the first limiting post and the second limiting post.

8. The adjustable test fixture for testing dual-sided display screens according to claim 1, characterized in that, Also includes: A groove, located below the test head on the other side, is used to accommodate the passage of the flexible circuit board.

9. The adjustable test fixture for testing dual-sided display screens according to claim 1, characterized in that, Also includes: The placement plate, located on the bottom plate on the side away from one test head and close to the other test head, is used to place the flexible circuit board.

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