Flexible screen outward bending and slip rolling test fixture

Abstract

The utility model discloses a flexible screen outward bending and slip rolling test fixture, which comprises a pair of bases, an outward folding turning plate and an outward folding fixing plate, limiting devices are respectively fixed on the bases, the limiting devices are used for limiting the outward folding turning plate and the outward folding fixing plate to turn around the axis of a bending shaft, and two ends of a connecting rod are fixedly connected with the pair of bases; the device further comprises a sliding roll testing module, the sliding roll testing module comprises a fixing rod, an adjusting rod, an adjusting knob, a stretching frame, a stretching rolling shaft and a sliding roll fixing plate, sliding rails are arranged on the two opposite sides in the concave face of the outward folding fixing plate, the adjusting rod, the adjusting knob, the stretching frame, the stretching rolling shaft and the sliding roll fixing plate slide on the sliding rails, and the fixing rod is installed on the outer side of the outward folding fixing plate. The adjusting knob penetrates through the fixing rod and is matched with the adjusting rod to adjust the distance between the fixing rod and the adjusting rod, the stretching frame, the sliding roll fixing plate and the adjusting rod are fixedly connected, and a stretching rolling shaft is arranged in the stretching frame. According to the utility model, outward folding and sliding rolling tests can be simultaneously carried out on the flexible screen, and test variables are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible screen testing fixtures, and particularly relates to a flexible screen external folding, bending and sliding test fixture. Background Art

[0002] With the continuous advancement of display technology, flexible screens have gradually become a hot spot in the display industry, and flexible screens have gradually become an important part of electronic products such as smartphones, tablets, and wearable devices. Flexible screens have the advantages of being thin, bendable, and rollable, and can realize innovative designs that traditional rigid screens cannot achieve, such as folding mobile phones and rollable displays. However, flexible screens need to withstand multiple bending and curling in actual use, which places higher requirements on their materials and structures. The unique form of flexible screens requires them to undergo rigorous bending and sliding tests during the research and development and production process to ensure their durability and reliability. Existing testing devices often focus on a single test type, such as only bending or only sliding tests, and cannot simulate changes in multiple physical forms at the same time.

[0003] For example, a Chinese utility model patent with announcement number CN214334207U discloses a flexible screen sliding and rolling durability testing equipment, which includes a workbench, the workbench is provided with a mounting plate, multiple slide rails and a control display assembly, the lower end of the mounting plate is provided with a power assembly, the upper end of the mounting plate is provided with a fixing mechanism and a sliding and rolling testing mechanism, the power assembly and the control display assembly are both connected to the sliding and rolling testing mechanism, the sliding and rolling testing mechanism includes a moving platform, a sliding and rolling testing platform and a tensile testing component, the moving platform and the sliding and rolling testing platform are both slidably connected to the slide rails, the sliding and rolling testing platform includes two symmetrically arranged test turntables, a reel is provided between the two test turntables, and the reel is detachably connected to the test turntable.

[0004] The Chinese utility model patent with announcement number CN217704684U discloses a folding jig for a U-shaped flexible folding screen, including two screen plates, a folding mechanism, a limit pad and a mounting mechanism. The folding mechanism connects the two screen plates. The folding mechanism includes a gear linkage mechanism. The gear linkage mechanism includes two meshing gears. The mounting mechanism is used to install the folding mechanism, and a compensation rod is provided on the gear. A gap is provided between the two screen plates, and installation space is reserved on both sides of the screen plates. The installation space is connected to the gap. The folding mechanism also includes a compensation strip, which is provided in the installation space and connected to the screen plates. The compensation strip is connected to the compensation rod. The compensation strip is used to provide angle compensation and displacement compensation between the gear and the screen plates during the flipping of the screen plates. When the folding jig is folded, the limit pad restricts the two screen plates from continuing to approach each other, so that the two screen plates are in a parallel state.

[0005] When the flexible screen needs to be subjected to external bending and rolling tests, the screen needs to be tested on one fixture first, and then switched to another fixture for testing after the test is completed. This is cumbersome and affects the test efficiency. Utility Model Content

[0006] The utility model provides a flexible screen external bending and sliding test fixture, aiming to solve the problem of cumbersome use in the external bending and sliding test of the prior art.

[0007] The folding plate is a concave flat plate with a notch facing the side away from the bending axis; the ...

[0008] Preferably, the base is also fixedly connected with gear grooves, and a pair of mutually meshing synchronous gears are installed in the gear grooves to synchronize the flipping movement of the outward folding flap and the outward folding fixed plate.

[0009] Preferably, a second connecting rod is fixedly connected to the radial outer periphery of the synchronous gear, and the outer side of the second connecting rod is sleeved in a sliding groove provided on the outer folding flap and the outer folding fixed plate.

[0010] Preferably, the adjusting rod is connected to the stretching frame via a tension sensor, and the tension sensor is used to detect the tension value between the adjusting rod and the stretching frame, and send the tension value to an external data processing module.

[0011] Preferably, the outward folding flap is a concave flat plate, and the notch faces the side away from the bending axis.

[0012] Preferably, the portion where the first connecting rod contacts the flexible screen to be tested is an arc convex structure.

[0013] Preferably, the limiting device is a limiting plate with a pair of arc-shaped sliding grooves, and sliding blocks cooperating with the arc-shaped sliding grooves are arranged at corresponding positions of the outward folding flap and the outward folding fixed plate.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] The flexible screen test fixture proposed in the utility model can perform outward folding and sliding rolling tests on the flexible screen at the same time, reducing the test variables, making the test results of the flexible screen more accurate and closer to the actual use method, and being able to observe the changes in the tension value during the test, so that the test data can be obtained more clearly; reducing the uncontrollable factors during two different tests, making the test conditions closer to the environment used, and improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the fixture of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the sliding roll test module of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation of the sliding roll test module and the outward folding fixing plate according to the embodiment of the utility model;

[0019] Figure 4 It is a top view of the limit device, the first connecting rod and the gear groove according to the embodiment of the utility model;

[0020] Figure 5 This is a structural diagram of the base, the limiting device, the first connecting rod and the gear groove in the embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the synchronous gear according to the embodiment of the utility model;

[0022] Figure 7 It is a schematic diagram of the convex surface of the first connecting rod in an embodiment of the utility model.

[0023] Figure numerals: 1. base; 11. limit device; 12. first connecting rod; 13. gear groove; 2. outward folding flap; 3. outward folding fixed plate; 31. slide rail; 4. synchronization gear; 41. second connecting rod; 5. sliding and rolling test module; 51. fixed rod; 52. adjusting rod; 53. adjusting knob; 54. stretching frame; 55. stretching roller; 56. sliding and rolling fixed plate; 57. tension sensor; 6. flexible screen to be tested. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the application and with reference to the accompanying drawings.

[0025] like Figure 1-3As shown, the flexible screen outward folding, bending and sliding test fixture includes a pair of bases 1, an outward folding flap 2 and an outward folding fixed plate 3, and the bases 1 are respectively fixed with limiting devices 11, and the limiting devices 11 are used to limit the outward folding flap 2 and the outward folding fixed plate 3 from flipping around the bending axis. A pair of bases 1 are respectively arranged at the upper and lower ends, and a first connecting rod 12 is fixedly connected to the pair of bases 1 at both ends. The outward folding fixed plate 3 is a concave flat plate and the notch is facing the side away from the bending axis.

[0026] In addition to the above structure, the flexible screen external folding, bending and sliding test fixture proposed by the utility model also includes a sliding test module 5, which includes a fixing rod 51, an adjusting rod 52, an adjusting knob 53, a stretching frame 54, a stretching roller 55 and a sliding fixing plate 56. The outer folding fixing plate 3 is provided with slide rails 31 on opposite sides of the concave surface. Figure 3 As shown, the slide rails 31 are on the two opposite concave surfaces of the outer folding fixing plate 3. The slide rails 31 in this embodiment are arranged on the auxiliary mounting block, and the auxiliary mounting rod is fixed to the outer folding fixing plate 3. In other embodiments of the utility model, the slide rails 31 can also be directly arranged at the corresponding position of the outer folding fixing plate 3.

[0027] The adjusting rod 52, the adjusting knob 53, the stretching frame 54, the stretching roller 55 and the sliding and rolling fixed plate 56 slide on the slide rail 31, the fixing rod 51 is fixedly installed on the outside of the outer folding fixed plate 3, the adjusting knob 53 passes through the fixing rod 51 and cooperates with the adjusting rod 52 to adjust the distance between the fixing rod 51 and the adjusting rod 52, the stretching frame 54, the sliding and rolling fixed plate 56 and the adjusting rod 52 are fixedly connected, and the stretching roller 55 is arranged in the stretching frame 54. The stretching roller 55 is used to fit the flexible screen 6 to be tested and bent on the sliding and rolling test module 5 during the sliding and rolling test, and provide good support and lubrication for the flexible screen 6 to be tested.

[0028] In a preferred embodiment of the present invention, Figure 4 , 5 As shown, the base 1 is also fixedly connected with gear grooves 13, and two pairs of rotating holes for installing synchronous gears 4 are provided on the two side walls of each gear groove 13. A pair of mutually meshing synchronous gears 4 are installed in the gear grooves, so that the flipping movements of the outward folding flap 2 and the outward folding fixed plate 3 can be synchronized, which is more in line with the actual use scenarios of the flexible screen.

[0029] like Figure 6As shown, the radial outer periphery of the synchronous gear 4 is fixedly connected with a second connecting rod 41, and the outer side of the second connecting rod 41 is sleeved in the slide grooves provided on the outer folding flap 2 and the outer folding fixed plate 3. Specifically, the bottom surfaces of the outer folding flap 2 and the outer folding fixed plate 3 are provided with slide grooves for accommodating the second connecting rod 41, one end of the second connecting rod 41 is fixedly connected to the synchronous gear 4, and the other end is a long rectangular parallelepiped structure, which is sleeved into the slide groove. During the bending test, the synchronous gear 4 only limits the synchronization when the outer folding flap 2 and the outer folding fixed plate 3 are turned over, and has a certain fault tolerance for the small relative displacement of the outer folding flap 2 and the outer folding fixed plate 3 during the bending test of the fixture.

[0030] The adjusting rod 52 is connected to the stretching frame 54 through a tension sensor 57, which is a connecting piece between the adjusting rod 52 and the stretching frame 54. The tension sensor 57 is used to detect the tension value between the adjusting rod 52 and the stretching frame 54, and send the tension value to the external data processing module. It can realize real-time recording of the tension on the flexible screen 6 to be tested during the bending and sliding tests.

[0031] In a preferred embodiment of the utility model, the outward folding flap 2 is a concave flat plate, and the notch is facing the side away from the bending axis. In this way, after being fully bent, the outward folding flap 2 fits with the concave notch of the outward folding fixed plate 3, and the concave notch of the outward folding flap 2 is used to accommodate the sliding roll test module 5 installed on the outward folding fixed plate 3.

[0032] like Figure 7 As shown, the portion where the first connecting rod 12 contacts the flexible screen 6 to be tested is an arc convex structure, and the arc convex surface fits the flexible screen 6 to be tested after being folded outward.

[0033] The limiting device 11 is a limiting plate with a pair of arc-shaped sliding grooves dug therein, and sliding blocks cooperating with the arc-shaped sliding grooves are arranged at corresponding positions of the outward folding flap 2 and the outward folding fixing plate 3 .

[0034] The use process of this utility model is as follows:

[0035] The two ends of the flexible screen 6 to be tested are respectively fixed on the bottom surface of the outer folding flap 2 and the sliding fixed plate 56. In a preferred embodiment of the utility model, an easy-pull adhesive can be used to stick one end of the flexible screen 6 to the bottom surface of the outer folding flap 2 and the other end to the surface of the sliding fixed plate 56 to complete the fixing of the flexible screen 6 to be tested. After the flexible screen 6 to be tested is fixed, the adjusting knob 53 is manually adjusted to adjust the tension of the flexible screen 6 to be tested in a static state to a suitable range. After the tension adjustment is completed, the outward folding flap 2 and the outward folding fixed plate 3 are folded upward and flattened downward along their bending axes to perform reciprocating folding, so as to realize the outward folding and bending test of the flexible screen 6 to be tested. At the same time, during the outward folding test, the stretching frame 54 will also produce a small displacement through the connection of the slide rail, thereby realizing the bending and sliding movement, and at the same time, the outward folding, folding and sliding test is realized on the flexible screen 6 to be tested. In the process of continuous bending, the tension on the flexible screen 6 to be tested will change and be detected by the tension sensor 57. The data processing module externally connected to the tension sensor 57 can receive the tension value on the flexible screen 6 to be tested in real time.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A flexible screen outward folding, bending and sliding test fixture, comprising a pair of bases (1), an outward folding flap (2) and an outward folding fixed plate (3), wherein the bases (1) are respectively fixed with limiting devices (11), and the limiting devices (11) are used to limit the outward folding flap (2) and the outward folding fixed plate (3) from flipping around the bending axis, and a first connecting rod (12) is fixedly connected to the pair of bases (1) at both ends, and the outward folding fixed plate (3) is a concave flat plate with a notch facing the side away from the bending axis; characterized in that The invention also comprises a sliding roll test module (5), wherein the sliding roll test module (5) comprises a fixed rod (51), an adjusting rod (52), an adjusting knob (53), a stretching frame (54), a stretching roller (55) and a sliding roll fixing plate (56); slide rails (31) are arranged on opposite sides of the concave surface of the outer folding fixing plate (3); the adjusting rod (52), the adjusting knob (53), the stretching frame (54), the stretching roller (55) and the sliding roll fixing plate (56) slide on the slide rails (31); the fixed rod (51) is fixedly installed on the outer side of the outer folding fixing plate (3); the adjusting knob (53) passes through the fixed rod (51) and cooperates with the adjusting rod (52) to adjust the distance between the fixed rod (51) and the adjusting rod (52); the stretching frame (54), the sliding roll fixing plate (56) and the adjusting rod (52) are fixedly connected; and a stretching roller (55) is arranged in the stretching frame (54).

2. The flexible screen external bending and sliding test fixture according to claim 1 is characterized in that: The base (1) is also fixedly connected with gear grooves (13), and a pair of mutually meshing synchronous gears (4) are installed in the gear grooves to synchronize the turning movement of the outward folding flap (2) and the outward folding fixed plate (3).

3. The flexible screen external bending and sliding test fixture according to claim 2 is characterized in that: The radial outer periphery of the synchronous gear (4) is fixedly connected to a second connecting rod (41), and the outer side of the second connecting rod (41) is sleeved in a sliding groove provided on the outer folding flap (2) and the outer folding fixed plate (3).

4. The flexible screen external folding, bending and sliding test fixture according to claim 1, characterized in that: The adjusting rod (52) is connected to the stretching frame (54) via a tension sensor (57), and the tension sensor (57) is used to detect the tension value between the adjusting rod (52) and the stretching frame (54), and send the tension value to an external data processing module.

5. The flexible screen external bending and sliding test fixture according to claim 1, characterized in that: The outward folding flap (2) is a concave flat plate, and the notch faces the side away from the bending axis.

6. The flexible screen external bending and sliding test fixture according to claim 1, characterized in that: The portion where the first connecting rod (12) contacts the flexible screen (6) to be tested is an arc convex structure.

7. The flexible screen external bending and sliding test fixture according to claim 1, characterized in that: The limiting device (11) is a limiting plate with a pair of arc-shaped sliding grooves, and the corresponding positions of the outward folding flap (2) and the outward folding fixed plate (3) are provided with sliding blocks that cooperate with the arc-shaped sliding grooves.

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