Flexible screen U-shaped jig capable of adjusting shape of bending area

Abstract

The flexible screen U-shaped jig capable of adjusting the shape of the bending area comprises a base, a first turnover plate, a second turnover plate and synchromesh gears, gear grooves are fixedly formed in the two ends of the base, a pair of synchromesh gears meshed with each other is arranged in each gear groove, and the first turnover plate and the second turnover plate are arranged on the base. The peripheries of each pair of synchronous gears are fixedly connected with a first turnover plate and a second turnover plate respectively, and the synchronous gears are used for synchronizing the turnover movement of the first turnover plate and the second turnover plate; the device further comprises an adjusting rod and an adjusting knob, the adjusting rod is suspended on the base and connected with the adjusting knob penetrating through the base, and a thread matched with a screw hole in the adjusting rod is arranged at the top end of the adjusting knob and used for adjusting the distance between the base and the adjusting rod. According to the utility model, the bending area can be extruded with different forces from different directions, the deformation performance of the bending area of the screen can be fully detected, and the test comprehensiveness and accuracy are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible screen fixtures, and particularly relates to a flexible screen U-shaped fixture with adjustable bending zone shape. Background Art

[0002] With the advancement of technology, 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. They can realize innovative designs that traditional rigid screens cannot achieve, and are widely used in various electronic devices, such as folding phones and rollable displays. In order to ensure the reliability and durability of flexible screens in actual use, it is essential to conduct various bending tests on them. Existing test fixtures usually bend the flexible screen into a U-shaped structure to simulate its bending in actual use. However, these U-shaped structures are often fixed and their specific shapes cannot be adjusted according to test requirements.

[0003] The Chinese utility model patent with authorization 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.

[0004] This fixed U-shaped structure has the following problems: The fixed U-shaped structure can only perform bending tests at a single angle and radius, and cannot meet diverse testing needs. In actual applications, flexible screens may encounter various forms of bending and extrusion, especially extrusion of the bending part, and a single form of testing cannot fully reflect its performance. Since the shape of the U-shaped structure cannot be adjusted, the coverage of the test fixture is limited, and it is impossible to fully evaluate the performance of the flexible screen at different bending radii and angles. This may lead to unexpected failures and problems in actual applications, affecting the reliability of the product. The fixed U-shaped structure lacks flexibility and cannot simulate various complex bending conditions in actual use. This brings great limitations to product design and improvement, and it is difficult to fully verify the durability and reliability of the flexible screen in the actual use environment.

[0005] Therefore, it is necessary to design a new test fixture that can adjust the specific shape of the bending zone in the U-shaped structure, so as to test the flexible screen under U-shaped bending with different bending zone shapes. Utility Model Content

[0006] The utility model provides a flexible screen U-shaped fixture with adjustable bending zone shape, aiming to solve the problem that the test fixture in the prior art cannot detect the deformation performance of the bending area of ​​the screen.

[0007] In order to solve the above technical problems, the flexible screen U-shaped fixture proposed in the utility model includes a base, a first flip plate, a second flip plate and a synchronous gear. Gear grooves are fixedly installed at both ends of the base, and a pair of synchronous gears that mesh with each other are arranged in each gear groove. The outer periphery of each pair of the synchronous gears is respectively fixedly connected to the first flip plate and the second flip plate, and the synchronous gears are used to synchronize the flipping movement of the first flip plate and the second flip plate; it also includes an adjusting rod and an adjusting knob. The adjusting rod is suspended on the base and connected to the adjusting knob passing through the base. The top of the adjusting knob is provided with a thread that cooperates with the screw hole on the adjusting rod, which is used to adjust the distance between the base and the adjusting rod.

[0008] Preferably, the adjustment knob passes through the midpoint of the top view surface of the base.

[0009] Preferably, a guide rail is further provided on the base, and the guide rail is used to guide the adjustment rod to move parallel to the base and away from or towards the base.

[0010] Preferably, the number of the guide rails is an even number and they are equidistantly distributed on both sides of the adjusting knob.

[0011] Preferably, a sliding groove for guiding the adjusting rod to move away from or towards the base is arranged on the surface of the gear groove close to the adjusting rod, and both ends of the adjusting rod are embedded in the sliding groove.

[0012] Preferably, the synchronous gear is fixedly connected with a connecting rod, and the connecting rod is fixedly connected to the upper surfaces of the first flip plate and the second flip plate.

[0013] Preferably, the bottom surfaces of the first flip plate and the second flip plate are both provided with reinforcing ribs.

[0014] Preferably, the surface of the adjustment rod contacting the flexible screen to be tested is a plane.

[0015] Preferably, the surface of the adjustment rod contacting the flexible screen to be tested is a curved surface that fits the bent flexible screen to be tested.

[0016] Compared with the prior art, the utility model has the following technical effects:

[0017] The U-shaped fixture for a flexible screen proposed in the utility model drives the adjusting rod to approach and then move away from the bending area of ​​the flexible screen to be tested by adjusting the knob, and squeezes the bending area from different directions with different forces, so as to fully detect the deformation performance of the bending area of ​​the screen. This can not only improve the comprehensiveness and accuracy of the test, but also better simulate the actual usage environment, and provide strong support for the design and improvement of flexible screens. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the fixture of the utility model when it is completely flattened;

[0019] Figure 2 It is a schematic diagram of the structure of the jig of the utility model that is partially bent;

[0020] Figure 3 It is a front view of the fixture of the utility model when it is completely bent;

[0021] Figure 4 It is a side view of the fixture of the utility model when it is completely bent;

[0022] Figure 5 It is a side view of the fixture of the utility model when it is completely flattened;

[0023] Figure 6 This is a schematic diagram of the structure of the base, the adjusting rod, and the adjusting knob of an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the guide rail structure of an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the synchronous gear structure of an embodiment of the utility model;

[0026] Fig. 9 It is a schematic diagram of the use of an embodiment of the utility model.

[0027] Figure numerals: 1, base; 2, first flip plate; 3, second flip plate; 4, synchronization gear; 41, connecting rod; 5, gear slot; 6, adjustment rod; 7, adjustment knob; 8, guide rail; 9, flexible screen to be tested. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figure 1-4As shown, this embodiment is a flexible screen U-shaped fixture with adjustable bending zone shape, including a base 1, a first flip plate 2, a second flip plate 3 and a synchronous gear 4. The base 1 is a long strip structure, and gear grooves 5 are fixedly installed at both ends of the strip. A pair of mutually meshing synchronous gears 4 are arranged in each gear groove 5. The outer periphery of each pair of the synchronous gears 4 is respectively fixedly connected to the first flip plate 2 and the second flip plate 3. The synchronous gears 4 are used to synchronize the flipping motion of the first flip plate 2 and the second flip plate 3. The above-mentioned configuration includes a base 1, a pair of gear grooves 5, and two pairs of synchronous gears 4.

[0030] In addition to the above components, the utility model also includes an adjustment rod 6 and an adjustment knob 7. The adjustment rod 6 is suspended on the base 1 and connected to the adjustment knob 7 passing through the base 1. The adjustment knob 7 passes through the base 1 and can rotate freely in the base. The top of the adjustment knob 7 is provided with a thread that matches the screw hole on the adjustment rod 6, which is used to adjust the distance between the base 1 and the adjustment rod 6. When the adjustment knob 7 is rotated, the adjustment knob 7 rotates freely in the base 1. Since the screw structure at the top of the adjustment knob 7 passes through the screw hole at the corresponding position on the adjustment rod 6, the screw and the screw hole match, and the rotation of the adjustment knob 7 ultimately drives the adjustment rod 6 to move away from or close to the base 1, and always keeps parallel with the base 1 during movement.

[0031] In a preferred embodiment of the present invention, Figure 5 , 6 As shown, the adjusting knob 7 passes through the midpoint of the top view of the base 1, that is, the adjusting knob 7 is located at the midpoint of the base 1 and also at the midpoint of the adjusting rod 6, so that the adjusting knob 7 can be smoother and more stable when adjusting the distance between the adjusting base 1 and the adjusting rod 6.

[0032] In order to make the movement of the adjusting rod more stable, in a preferred embodiment of the present invention, Figure 7 As shown, the base is further provided with a guide rail 8, which is used to guide the adjustment rod 6 to move away from or toward the base 1 in parallel with the base 1. The number of the guide rails 8 is an even number, and they are equidistantly distributed on both sides of the adjustment knob 7. The guide rails 8 can keep the adjustment rod 6 stable, and keep the relative positions of the long strip base 1 and the long strip adjustment rod 6 stable, so that relative rotation does not occur.

[0033] In another embodiment of the utility model, the guide rail 8 is not provided, but a slide groove for guiding the adjustment rod 6 to move away from or toward the base 1 is provided on the surface of the two gear grooves 5 near the adjustment rod 6, and the two ends of the adjustment rod 6 are embedded in the slide groove and can move up and down in the slide groove. Similarly, the slide groove structure on the gear groove 5 can also maintain the stability of the adjustment rod 6, and maintain the stability of the relative position of the long strip base 1 and the long strip adjustment rod 6, so that relative rotation does not occur.

[0034] like Figure 8 As shown, the synchronous gear is connected to the first flip plate 2 and the second flip plate 3 in the following manner: the synchronous gear 4 is fixedly connected to a connecting rod 41, and the connecting rod 41 is fixedly connected to the upper surfaces of the first flip plate 2 and the second flip plate 3. In particular, the upper surfaces of the connecting rod 41 are coplanar with the upper surfaces of the flip plates connected thereto.

[0035] like Figure 4 As shown, the bottom surface of one of the flip plates is shown, which may be the first flip plate 2 or the second flip plate 3. The bottom surfaces of the first flip plate 2 and the second flip plate 3 are both provided with reinforcing ribs.

[0036] In order to test different forms of U-shaped structures, the surface of the adjustment rod 6 contacting the flexible screen 9 to be tested is a plane or a curved surface that fits the flexible screen 9 to be tested after being bent. The curved surface can be an inner concave curved surface or an outer convex curved surface. Whether it is an outer convex curved surface or an inner concave curved surface, its circumferential radius can be greater than the circumferential radius of the U-shaped area after bending, or it can be smaller than the circumferential radius of the U-shaped area after bending, so as to test as many U-shaped forms as possible.

[0037] The use process of this utility model is as follows:

[0038] like Fig. 9 As shown, the distance between the adjusting rod 6 and the base 1 is adjusted to the minimum by adjusting the knob 7, and the flexible screen 9 to be tested is fixed to the upper surfaces of the first flip plate 2 and the second flip plate 3. Those skilled in the art may know that the fixing methods of the flexible screen 9 to be tested and the first flip plate 2 and the second flip plate 3 include bonding, electrostatic adsorption, vacuum adsorption or other fixing methods. In this embodiment, the flexible screen 9 to be tested is bonded to the upper surfaces of the first flip plate 2 and the second flip plate 3 using an easy-to-pull adhesive.

[0039] After the flexible screen 9 to be tested is fixed, the first flip plate 2 and the second flip plate 3 are driven to flip synchronously to the position as shown in FIG. Figure 3 , 4 The fully bent state shown is maintained, and the adjustment knob 7 at the bottom is adjusted to gradually increase the distance between the base 1 and the adjustment rod 6, so that the adjustment rod 6 contacts the U-shaped area of ​​the flexible screen 9 to be tested. Continue to rotate the adjustment knob 7 so that the adjustment rod 6 squeezes the U-shaped area of ​​the flexible screen 9 to be tested, and test the performance of the U-shaped area of ​​the flexible screen 9 to be tested under different squeezing states. By adjusting the contact surface shape of the adjustment rod 6, various squeezing forms can be simulated as much as possible.

[0040] 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 U-shaped fixture with adjustable bending zone shape, comprising a base (1), a first flip plate (2), a second flip plate (3) and a synchronous gear (4), wherein gear grooves (5) are fixedly installed at both ends of the base (1), and a pair of mutually meshing synchronous gears (4) are arranged in each of the gear grooves (5), and the outer periphery of each pair of the synchronous gears (4) is respectively fixedly connected to the first flip plate (2) and the second flip plate (3), and the synchronous gears (4) are used to synchronize the flipping movement of the first flip plate (2) and the second flip plate (3); characterized in that: It also includes an adjusting rod (6) and an adjusting knob (7), wherein the adjusting rod (6) is suspended on the base (1) and connected to the adjusting knob (7) passing through the base (1), and the top of the adjusting knob (7) is provided with a thread that matches the screw hole on the adjusting rod (6) and is used to adjust the distance between the base (1) and the adjusting rod (6).

2. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1 is characterized in that: The adjusting knob (7) passes through the midpoint of the top-view surface of the base (1).

3. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1 or 2, characterized in that: A guide rail (8) is also provided on the base, and the guide rail (8) is used to guide the adjustment rod (6) to move parallel to the base (1) away from or towards the base (1).

4. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 3 is characterized in that: The number of the guide rails (8) is an even number and they are equidistantly distributed on both sides of the adjusting knob (7).

5. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1 is characterized in that: A sliding groove for guiding the adjusting rod (6) to move away from or towards the base (1) is provided on the surface of the gear groove (5) close to the adjusting rod (6), and both ends of the adjusting rod (6) are embedded in the sliding groove.

6. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1, characterized in that: The synchronous gear (4) is fixedly connected to a connecting rod (41), and the connecting rod (41) is fixedly connected to the upper surfaces of the first flip plate (2) and the second flip plate (3).

7. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1, characterized in that: The bottom surfaces of the first flip plate (2) and the second flip plate (3) are both provided with reinforcing ribs.

8. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1, characterized in that: The surface of the adjustment rod (6) contacting the flexible screen (9) to be tested is a plane.

9. The flexible screen U-shaped fixture with adjustable bending zone shape according to claim 1, characterized in that: The surface of the adjustment rod (6) contacting the flexible screen (9) to be tested is a curved surface that fits the bent flexible screen (9) to be tested.

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