Mechanical stress detection device for flexible display

Abstract

The utility model discloses a mechanical stress detection device for a flexible display, and relates to the field of stress detection, the mechanical stress detection device comprises a case, a clamping assembly and a lateral limiting assembly, one threaded rod is rotated, the other threaded rod is driven to rotate through a universal joint, and a moving block drives an extrusion plate to move through the rotation of the threaded rods; therefore, the two extrusion plates are driven to synchronously move towards the center position, deviation of a bending detection result due to the fact that the center position of the flexible screen deviates from the rotating shaft is avoided, flexible screens of different sizes can be clamped, a top plate is pulled up, an insertion rod is driven to retract into an extrusion block, and then the extrusion block is slid. A compression spring is extruded by a movable block until an extrusion block abuts against the side face of the flexible screen, and under the action of an extension spring, the bottom end of an insertion rod penetrates through the extrusion block to be inserted into an insertion groove in the upper surface of a transverse rod, so that abutting limiting of the side face of the flexible screen is completed, and lateral deviation of the flexible screen in the bending process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to stress detection technical field, especially relate to a flexible display mechanical stress detection device. BACKGROUND

[0002] Flexible screen stress detection is a test for flexible display screen, aiming at evaluating the performance of the screen under mechanical stress such as bending, stretching, compression, etc. Flexible screen is increasingly popular in wearable devices, folding mobile phones and other products due to its lightweight, bendable characteristics. In order to ensure the reliability and durability of these devices in actual use, strict stress testing is required for flexible screen.

[0003] Bending tester is a device used during bending stress detection of flexible screen. The flexible screen is placed on the two clamping arms of the flexible screen, and then the flexible screen is bent by the bending of the two clamping arms. After a certain number of bends, the flexible screen is tested to work normally, thereby testing the bending performance of the flexible screen.

[0004] The existing bending tester simply places the flexible screen on the clamping arm during testing, and drives the flexible screen to bend by rotating the clamping arm. When detecting different sizes of flexible screen, the fixed clamping arm cannot be adjusted for different sizes of flexible screen, resulting in inconvenience in use. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] In view of the above problems existing in the prior art, the utility model provides a flexible display mechanical stress detection device.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model is realized by the following technical scheme: a flexible display mechanical stress detection device, comprising a case, the inside of the case is provided with a clamping assembly;

[0009] The clamping assembly comprises two rotating rods movably connected to the outer surface of the case, the outer surface of the rotating rod is fixedly connected with a horizontal rod, the horizontal rod and the rotating rod are movably connected with a threaded rod, the outer surface of the threaded rod is threadedly connected with a moving block, the outer surface of the moving block is fixedly connected with an extrusion plate through a connecting block;

[0010] The inside of the horizontal rod is provided with a lateral limiting assembly;

[0011] The lateral limiting assembly comprises a compression spring fixedly connected to the inside of the horizontal rod, the end of the compression spring away from the horizontal rod is fixedly connected with a movable block, the top end of the movable block is fixedly connected with an extrusion block through the upper surface of the horizontal rod.

[0012] As a preferred scheme of the flexible display mechanical stress detection device, the drive part is arranged in the case, and the drive part is fixedly connected with one end of the rotating rod.

[0013] As a preferred scheme of the flexible display mechanical stress detection device, the fixed shaft is movably connected in the case, the fixed block is fixedly connected in the fixed shaft, the universal joint is movably connected in the fixed block, and the adjacent one end of the two threaded rods is movably connected through the universal joint and the cross rod.

[0014] As a preferred scheme of the flexible display mechanical stress detection device, the limiting plate is fixedly connected between the cross rod and the rotating rod, and the limiting groove matched with the limiting plate is arranged in the mobile block.

[0015] As a preferred scheme of the flexible display mechanical stress detection device, the two insertion rods are arranged in the extrusion block, the top plate is fixedly connected with the top end of the insertion rod, the insertion hole matched with the insertion rod is arranged on the upper surface of the extrusion block, and the extension spring is fixedly connected between the top plate and the insertion hole.

[0016] As a preferred scheme of the flexible display mechanical stress detection device, the bottom end of the insertion rod passes through the lower surface of the extrusion block, and the insertion groove matched with the insertion hole is arranged on the upper surface of the cross rod.

[0017] (Three) beneficial effects

[0018] The flexible display mechanical stress detection device has the following beneficial effects:

[0019] 1. One of the threaded rods is rotated, the other threaded rod is driven to rotate through the universal joint, the mobile block drives the extrusion plate to move through the rotation of the threaded rod, so that the two extrusion plates are driven to move synchronously to the center position, the two ends of the flexible screen are extruded and limited, the center position of the flexible screen can be aligned with the center position between the two rotating rods, deviation of the bending detection result caused by deviation of the center position of the flexible screen from the rotating shaft is avoided, and different sizes of flexible screens can be clamped.

[0020] 2, pull up the top plate, drive the plug rod to retract the inside of the extrusion block, then slide the extrusion block, extrude the compression spring through the movable block, until the extrusion block abuts the side of the flexible screen, after the extrusion block abuts the side of the flexible screen, then loosen the top plate, under the action of the tension spring, the top plate drives the plug rod to move downward, so that the bottom end of the plug rod is inserted into the insertion slot on the upper surface of the horizontal rod, thereby completing the side abutting limiting of the flexible screen, avoiding the lateral deviation of the flexible screen during bending. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 is the overall structure diagram of the present application.

[0023] Figure 2 is the exploded structure diagram of the clamping assembly of the present application.

[0024] Figure 3 is the exploded structure diagram of the lateral limiting assembly of the present application.

[0025] In the figure, 1, case; 2, clamping assembly; 201, rotating rod; 202, limiting plate; 203, horizontal rod; 204, universal joint; 205, moving block; 206, extrusion plate; 207, threaded rod; 208, fixed block; 209, fixed shaft; 3, lateral limiting assembly; 301, plug rod; 302, tension spring; 303, extrusion block; 304, movable block; 305, compression spring; 306, top plate. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0027] Embodiment 1

[0028] Referring to Figure 1 and Figure 2For the first embodiment of the utility model, this embodiment provides a flexible display mechanical stress detection device, including case 1, the inside of case 1 is provided with clamping assembly 2, clamping assembly 2, including two movablely connected in the outer surface of case 1 rotating lever 201, the outer surface of rotating lever 201 is fixedly connected with cross bar 203, cross bar 203 and rotating lever 201 between movablely connected with threaded rod 207, the outer surface of threaded rod 207 is threadedly connected with moving block 205, the outer surface of moving block 205 is fixedly connected with extrusion plate 206 through connecting block.

[0029] Specifically, the inside of case 1 is provided with a driving part for driving rotating lever 201, the driving part is fixedly connected with one end of rotating lever 201, the inside of case 1 is movably connected with fixed shaft 209, the inside of fixed shaft 209 is fixedly connected with fixed block 208, the inside of fixed block 208 is movably connected with universal joint 204, one end of the two adjacent threaded shafts passes through cross bar 203 and is movably connected through universal joint 204, cross bar 203 and rotating lever 201 between fixedly connected with limit plate 202, the inside of moving block 205 is provided with limit slot matched with limit plate 202.

[0030] Further, the flexible screen is placed on rotating lever 201 and cross bar 203, the middle part of the flexible screen is supported through cross bar 203 and limit plate 202, then one of the threaded rods 207 is rotated, the other threaded rod 207 is driven to rotate through the universal joint 204, the movement of the moving block 205 is driven by the rotation of the threaded rod 207, so that the two extrusion plates 206 are driven to move synchronously to the center position, so that the two ends of the flexible screen are extruded and limited, and the center position of the flexible screen can be aligned with the center position between the two rotating levers 201 when the flexible screen is bent for testing, avoiding the deviation of the bending test result caused by the deviation of the center position of the flexible screen from the rotating shaft, the connection relationship between the driving part and other components, the working principle and the operation sequence belong to the prior art, which is well known to those skilled in the art, and will not be described in detail here.

[0031] Embodiment 2

[0032] Reference Figure 1 With Figure 3 For the second embodiment of the utility model, based on the previous embodiment, the inside of cross bar 203 is provided with lateral limit assembly 3, lateral limit assembly 3, including fixedly connected in the inside of cross bar 203 compression spring 305, the end away from cross bar 203 of compression spring 305 is fixedly connected with movable block 304, the top end of movable block 304 passes through the upper surface of cross bar 203 and is fixedly connected with extrusion block 303.

[0033] Specific, the inside of the extrusion block 303 is provided with two insertion rod 301, the top end of the insertion rod 301 is fixedly connected with the top plate 306, the upper surface of the extrusion block 303 is provided with the insertion hole matched with the insertion rod 301, the top plate 306 and the insertion hole are fixedly connected with the tension spring 302, the bottom end of the insertion rod 301 passes through the lower surface of the extrusion block 303, the upper surface of the crossbar 203 is provided with the insertion slot matched with the insertion hole.

[0034] Further, pull up the top plate 306, drive the insertion rod 301 to retract inside the extrusion block 303, then slide the extrusion block 303, extrude the compression spring 305 through the movable block 304, until the extrusion block 303 abuts the side of the flexible screen, and pay attention to avoid the extrusion block 303 extruding the side of the flexible screen too hard, after the extrusion block 303 abuts the side of the flexible screen, then release the top plate 306, under the action of the tension spring 302, the top plate 306 drives the insertion rod 301 to move downward, so that the bottom end of the insertion rod 301 passes through the extrusion block 303 and is inserted into the insertion slot on the upper surface of the crossbar 203, thereby completing the side abutting limiting of the flexible screen.

[0035] Working principle: when the bending stress detection of the flexible screen is carried out, the flexible screen is placed on the rotating rod 201 and the crossbar 203, the middle part of the flexible screen is supported through the crossbar 203 and the limiting plate 202, then one of the threaded rods 207 is rotated, the other threaded rod 207 is driven to rotate through the universal joint 204, the movement of the movable block 205 drives the extrusion plate 206 to move through the rotation of the threaded rod 207, so that the two extrusion plates 206 are driven to move synchronously to the center position, thereby realizing the extrusion limiting of the two ends of the flexible screen, ensuring that the center position of the flexible screen can be aligned with the center position between the two rotating rods 201 when the flexible screen is bent, avoiding the deviation of the bending detection result due to the deviation of the center position of the flexible screen from the rotating shaft, after clamping and positioning the flexible screen, the side limiting is started, the top plate 306 is pulled up, the insertion rod 301 is retracted inside the extrusion block 303, then the extrusion block 303 is slid, the compression spring 305 is extruded through the movable block 304, until the extrusion block 303 abuts the side of the flexible screen, and pay attention to avoid the extrusion block 303 extruding the side of the flexible screen too hard, after the extrusion block 303 abuts the side of the flexible screen, then release the top plate 306, under the action of the tension spring 302, the top plate 306 drives the insertion rod 301 to move downward, so that the bottom end of the insertion rod 301 passes through the extrusion block 303 and is inserted into the insertion slot on the upper surface of the crossbar 203, thereby completing the side abutting limiting of the flexible screen.

[0036] It is to be understood that the terminology "first" and "second" and the like used herein is merely intended to differentiate one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between such entities or operations.

Claims

1. A flexible display mechanical stress detection device comprising a case (1), characterized in that: The inside of the case (1) is provided with a clamping assembly (2); The clamping assembly (2) comprises two rotating rods (201) movably connected to the outer surface of the case (1), the outer surface of the rotating rod (201) is fixedly connected with a cross bar (203), the cross bar (203) and the rotating rod (201) are movably connected with a threaded rod (207), the outer surface of the threaded rod (207) is threadedly connected with a moving block (205), the outer surface of the moving block (205) is fixedly connected with an extrusion plate (206) through a connecting block; The inside of the cross bar (203) is provided with a lateral limiting assembly (3); The lateral limiting assembly (3) comprises a compression spring (305) fixedly connected in the inside of the cross bar (203), the end of the compression spring (305) away from the cross bar (203) is fixedly connected with a movable block (304), the top end of the movable block (304) is fixedly connected with an extrusion block (303) through the upper surface of the cross bar (203). 2.The flexible display mechanical stress detection device of claim 1, wherein: The inside of the case (1) is provided with a driving part for driving the rotating rod (201), the driving part is fixedly connected with one end of the rotating rod (201).

3. The apparatus of claim 2, wherein: The inside of the case (1) is movably connected with a fixed shaft (209), the inside of the fixed shaft (209) is fixedly connected with a fixed block (208), the inside of the fixed block (208) is movably connected with a universal joint (204), one end of the two adjacent threaded rods passes through the cross bar (203) and is movably connected through the universal joint (204).

4. The apparatus according to claim 3, wherein the apparatus is a flexible display mechanical stress detection apparatus. The cross bar (203) and the rotating rod (201) are fixedly connected with a limiting plate (202), the inside of the moving block (205) is provided with a limiting groove matched with the limiting plate (202).

5. The apparatus of claim 4, wherein: The inside of the extrusion block (303) is provided with two insertion rods (301), the top end of the insertion rod (301) is fixedly connected with a top plate (306), the upper surface of the extrusion block (303) is provided with an insertion hole matched with the insertion rod (301), the top plate (306) and the insertion hole are fixedly connected with a tension spring (302).

6. The apparatus of claim 5, wherein: The bottom end of the insertion rod (301) passes through the lower surface of the extrusion block (303), the upper surface of the cross bar (203) is provided with an insertion slot matched with the insertion hole.

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