A mechanical structure for testing the bending of a flexible OLED screen

Abstract

This utility model discloses a flexible OLED screen bending test mechanical structure, relating to the technical field of flexible display device testing equipment. It includes a support, a bending mechanism within the support, a lower clamping seat at the left end of the support, and an upper clamping seat attached to the bending mechanism via an up-and-down adjustment mechanism. A protective cover is provided outside the bending mechanism. The bending mechanism includes a bracket, a geared motor, a rotating shaft, a rocker arm, a crank, and a connecting rod; the up-and-down adjustment mechanism includes a support block, a guide groove, a lead screw, a geared motor, and a guide block. This utility model allows for flexible adjustment of the upper clamping seat position via the up-and-down adjustment mechanism, adapting to screens of different specifications; it employs a servo motor in conjunction with an encoder and an angle sensor to improve testing accuracy; an elastic anti-slip pad enhances clamping stability; a PTFE clamping plate prevents damage to the screen; and the protective cover ensures safety, solving the problems of unstable clamping, inconvenient adjustment, and low accuracy in existing equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of testing equipment for flexible display devices, specifically a mechanical structure for testing the bending of a flexible OLED screen. Background Technology

[0002] With the continuous development of flexible OLED screen technology, it has been widely used in smartphones, smartwatches, wearable devices, and other fields due to its thinness, lightness, and flexibility. Because flexible OLED screens frequently face bending during actual use, rigorous bending tests must be conducted during their manufacturing process to ensure sufficient structural strength and lifespan.

[0003] Currently, existing flexible OLED screen bending testing equipment on the market has many shortcomings. Some devices do not clamp the screen securely enough, making it prone to slipping during bending tests. This not only affects the normal progress of the test but may also damage the screen. Other devices have fixed clamping mechanisms, which cannot be flexibly adjusted to accommodate flexible OLED screens of different sizes and specifications, limiting their applicability. Furthermore, some testing devices have low precision in controlling the bending angle, making it difficult to accurately simulate various bending states of the screen in actual use. This results in low accuracy and reliability of the test results, failing to provide precise data support for screen quality assessment. Utility Model Content

[0004] The present invention aims to solve the technical problems of existing flexible OLED screen bending test equipment, such as unstable clamping, inconvenient adjustment, and low test accuracy.

[0005] A flexible OLED screen bending test mechanical structure includes a support, an inner cavity structure inside the support, a bending mechanism at the left end of the inner cavity, a lower clamping seat at the left end of the support, a control panel on the support, an upper clamping seat on the bending mechanism via an up-down adjustment mechanism, and a protective cover outside the bending mechanism, with an arc-shaped through hole on the side wall of the protective cover.

[0006] Furthermore, the bending mechanism includes a bracket fixed to the bottom of the inner cavity of the support, a geared motor is mounted on the bracket, a rocker arm is mounted on the bracket via a rotating shaft, a crank is fixedly mounted on the output shaft of the geared motor, and the crank is movably connected to the middle of the rocker arm via a connecting rod.

[0007] Furthermore, the up-and-down adjustment mechanism includes a support block fixed on the rocker arm, a guide groove is provided on the support block, a lead screw is provided inside the guide groove, a reduction motor with an output shaft fixedly connected to the lead screw is fixed on the top of the support block, a guide block that slides up and down is engaged inside the guide groove, and the guide block is threadedly connected to the lead screw, and the guide block is fixedly connected to the upper clamping seat.

[0008] Furthermore, the opposing surfaces of the lower clamping seat and the upper clamping seat are provided with elastic anti-slip pads, and the surface of the elastic anti-slip pads is provided with diamond-shaped anti-slip patterns.

[0009] Furthermore, both the geared motor and the geared motor are servo motors, and the support is equipped with an encoder that is electrically connected to the servo motor.

[0010] Furthermore, both the upper clamping seat and the lower clamping seat include a base and a clamping plate detachably connected to the base, and the clamping plate is made of polytetrafluoroethylene.

[0011] Furthermore, an angle sensor is provided at the connection between the rocker arm and the rotating shaft, and the angle sensor is electrically connected to the control panel.

[0012] Furthermore, a grease storage groove is provided at the threaded connection between the lead screw and the guide block, and a sponge is embedded in the grease storage groove.

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

[0014] This invention, by setting a lower clamping seat and an upper clamping seat, and setting an elastic anti-slip pad with a diamond-shaped anti-slip pattern on their opposite surfaces, can effectively enhance the clamping stability of the flexible OLED screen, prevent the screen from slipping during bending tests, and ensure the smooth progress of the test.

[0015] By using a servo motor as both a geared motor and a geared motor 1, along with an encoder and an angle sensor, the bending angle and the vertical adjustment of the upper clamp are made more precise. This allows for accurate simulation of various bending states of flexible OLED screens during actual use, improving the accuracy and reliability of the test results.

[0016] The up-and-down adjustment mechanism allows the upper clamp to be flexibly adjusted in position according to flexible OLED screens of different sizes and specifications, greatly improving the applicability of the equipment. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the bending mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the up-and-down adjustment mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of this utility model in a bent state;

[0023] In the picture:

[0024] 1. Support; 2. Bending mechanism; 21. Bracket; 22. Gear motor; 23. Shaft; 24. Rocker arm; 25. Crank; 26. Connecting rod; 3. Lower clamping seat; 4. Control panel; 5. Up and down adjustment mechanism; 51. Support block; 52. Guide groove; 53. Lead screw; 54. Gear motor one; 55. Guide block; 6. Upper clamping seat; 7. Protective cover; 8. Arc-shaped through hole. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] like Figure 1-5 As shown;

[0028] A mechanical structure for testing the bending of a flexible OLED screen.

[0029] This implementation plan addresses the technical problems existing in the prior art, such as those disclosed in the background section above: "Currently, existing flexible OLED screen bending test equipment on the market has many shortcomings. Some equipment does not clamp the screen securely enough, and the screen is prone to slipping during bending tests, which not only affects the normal progress of the test but may also damage the screen; some equipment has a fixed clamping mechanism, which cannot be flexibly adjusted according to different sizes and specifications of flexible OLED screens, resulting in a narrow range of applications; in addition, some test equipment has low bending angle control precision, making it difficult to accurately simulate various bending states of the screen in actual use, resulting in low accuracy and reliability of test results, and failing to provide accurate data support for screen quality assessment." In practical terms, this problem is clearly real and difficult to solve. Therefore, to solve this technical problem, a flexible OLED screen bending test mechanical structure is provided.

[0030] like Figure 1-5 As shown in the figure;

[0031] This utility model provides a technical solution: a flexible OLED screen bending test mechanical structure, including a support 1, an inner cavity structure inside the support 1, a bending mechanism 2 at the left end of the inner cavity of the support 1, a lower clamping seat 3 at the left end of the support 1, a control panel 4 on the support 1, an upper clamping seat 6 provided for the bending mechanism 2 through an up-down adjustment mechanism 5, a protective cover 7 outside the bending mechanism 2, and an arc-shaped through hole 8 on the side wall of the protective cover 7.

[0032] The bending mechanism 2 includes a bracket 21 fixed at the bottom of the inner cavity of the support 1. A geared motor 22 is mounted on the bracket 21. A rocker arm 24 is mounted on the bracket 21 via a rotating shaft 23. A crank 25 is fixedly mounted on the output shaft of the geared motor 22. The crank 25 is movably connected to the middle of the rocker arm 24 via a connecting rod 26.

[0033] The up-down adjustment mechanism 5 includes a support block 51 fixed on the rocker arm 24. A guide groove 52 is provided on the support block 51. A lead screw 53 is provided inside the guide groove 52. A geared motor 54 with an output shaft fixedly connected to the lead screw 53 is fixed on the top of the support block 51. A guide block 55 that slides up and down is engaged inside the guide groove 52. The guide block 55 is threadedly connected to the lead screw 53. The guide block 55 is fixedly connected to the upper clamping seat 6.

[0034] Both the lower clamping seat 3 and the upper clamping seat 6 are provided with elastic anti-slip pads on their opposite surfaces, and the surface of the elastic anti-slip pads is provided with diamond-shaped anti-slip texture, which can enhance the stability of clamping.

[0035] Both geared motor 22 and geared motor 54 are servo motors, and the support 1 is equipped with an encoder that is electrically connected to the servo motor, which can precisely control the rotation angle and speed of the motor.

[0036] Both the upper clamp 6 and the lower clamp 3 include a base and a clamping plate detachably connected to the base. The clamping plate is made of polytetrafluoroethylene to avoid damaging the screen and facilitate replacement.

[0037] An angle sensor is installed at the connection between the rocker arm 24 and the rotating shaft 23, and the angle sensor is electrically connected to the control panel 4, which can monitor the rotation angle of the rocker arm 24 in real time.

[0038] A grease reservoir is provided at the threaded connection between the lead screw 53 and the guide block 55, and a sponge is embedded in the grease reservoir to continuously provide lubrication.

[0039] Working principle:

[0040] In use, firstly, according to the size specifications of the flexible OLED screen, control the geared motor 54 through the control panel 4. The output shaft of the geared motor 54 drives the lead screw 53 to rotate in the guide groove 52. Since the guide block 55 is threadedly connected to the lead screw 53 and is engaged in the guide groove 52, the rotation of the lead screw 53 will cause the guide block 55 to slide up and down along the guide groove 52, thereby driving the upper clamping seat 6 to move up and down, adjusting the upper clamping seat 6 to a suitable height position.

[0041] Then, the flexible OLED screen to be tested is placed on the lower clamp 3, and the geared motor 54 is controlled again via the control panel 4 to move the upper clamp 6 downwards until the upper clamp 6 and the lower clamp 3 together firmly clamp the screen. At this time, the elastic anti-slip pads and diamond-shaped anti-slip patterns on the opposing surfaces of the lower clamp 3 and the upper clamp increase the friction and prevent the screen from slipping during the test.

[0042] After clamping is complete, the bending test program is started via control panel 4. The reduction motor 22 begins operation, its output shaft driving crank 25 to rotate. Crank 25, through connecting rod 26, drives rocker arm 24 to reciprocate around shaft 23. Since the upper clamping seat 6 is fixed to rocker arm 24 via the up-down adjustment mechanism 5, the swinging of rocker arm 24 drives the upper clamping seat 6 to reciprocate, thereby performing a bending test on the clamped flexible OLED screen.

[0043] During the test, the angle sensor monitors the rotation angle of the rocker arm 24 in real time and transmits the data to the control panel 4, allowing the operator to observe the bending angle in real time. Simultaneously, the encoder precisely controls the operating status of the geared motor 22 and geared motor 54 to ensure the bending test is performed according to preset parameters.

[0044] The grease reservoir and sponge at the threaded connection between the lead screw 53 and the guide block 55 can continuously provide lubrication to the threaded connection, reduce wear, and ensure the smooth operation of the up-and-down adjustment mechanism 5.

[0045] After the test is completed, control the device to stop working via control panel 4, then control the geared motor 54 to reverse, causing the upper clamp 6 to move upward, releasing the clamp on the screen, and then remove the screen after testing.

[0046] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flexible OLED screen bending test mechanical structure comprising a support (1), characterized in that: The support (1) has an internal cavity structure, and a bending mechanism (2) is provided at the left end of the internal cavity of the support (1). A lower clamping seat (3) is provided at the left end of the support (1). A control panel (4) is provided on the support (1). The bending mechanism (2) is provided with an upper clamping seat (6) through an up-down adjustment mechanism (5). A protective cover (7) is provided on the outside of the bending mechanism (2). An arc-shaped through hole (8) is opened on the side wall of the protective cover (7). The bending mechanism (2) includes a bracket (21) fixed to the bottom of the internal cavity of the support (1). A reduction motor (22) is provided on the bracket (21). A rocker arm (24) is provided on the bracket (21) through a rotating shaft (23). The output shaft of the geared motor (22) is fixedly provided with a crank (25). The crank (25) is movably connected to the middle of the rocker arm (24) through a connecting rod (26). The up-down adjustment mechanism (5) includes a support block (51) fixed on the rocker arm (24). A guide groove (52) is provided on the support block (51). A lead screw (53) is provided inside the guide groove (52). A geared motor (54) whose output shaft is fixedly connected to the lead screw (53) is fixedly provided on the top of the support block (51). A guide block (55) that slides up and down is engaged inside the guide groove (52). The guide block (55) is threadedly connected to the lead screw (53). The guide block (55) is fixedly connected to the upper clamping seat (6). 2.The flexible OLED screen bending test mechanical structure according to claim 1, characterized in that: The lower clamping seat (3) and the upper clamping seat (6) are provided with elastic anti-slip pads on their opposite surfaces, and the surface of the elastic anti-slip pads is provided with diamond-shaped anti-slip patterns. 3.The flexible OLED screen bending test mechanical structure according to claim 1, wherein: Both the geared motor (22) and the geared motor one (54) are servo motors, and the support (1) is equipped with an encoder that is electrically connected to the servo motor. 4.The flexible OLED screen bending test mechanical structure of claim 1, wherein: Both the upper clamping seat (6) and the lower clamping seat (3) include a base and a clamping plate detachably connected to the base, and the clamping plate is made of polytetrafluoroethylene. 5.The flexible OLED screen bending test mechanical structure of claim 1, wherein: An angle sensor is provided at the connection between the rocker arm (24) and the rotating shaft (23), and the angle sensor is electrically connected to the control panel (4). 6.The flexible OLED screen bending test mechanical structure according to claim 1, wherein: A grease storage groove is provided at the threaded connection between the lead screw (53) and the guide block (55), and a sponge is embedded in the grease storage groove.

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