Folding screen test fixture, bending machine and test method thereof
By designing a folding screen test fixture with adjustable bend radius, the problem that existing fixtures cannot adjust the bend radius is solved, which improves testing efficiency and reduces costs, and adapts to the verification needs of multiple bend radii.
Patent Information
- Application Number
- CN202510669208.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-08-01
AI Technical Summary
The existing folding screen test fixture cannot adjust the bend radius, resulting in high development costs and long verification time, which cannot meet the verification needs of multiple bend radius.
A folding screen test fixture is designed, including a first clamp, a second clamp and an adjustment module. The clamp interval is adjusted through the sliding part and the driving part, the bending radius can be adjusted, and the radius can be fixed by the locking structure.
It improves the efficiency of bending verification, reduces the cost of fixture development, reduces verification time, and adapts to the testing needs of multiple bending radii.
Smart Images
Figure CN120416375A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of folding screen testing, and in particular to a folding screen testing fixture, a bending machine and a testing method. Background Art
[0002] A folding screen mobile phone is a type of smart phone. A folding mobile phone with a flexible AMOLED (Active-matrix Organic Light Emitting Diode) screen can bend or even twist the screen by 360°. The folding screen needs to ensure that it can still be intact after more than 200,000 folds. Therefore, it is necessary to fully test the durability of the folding screen and the hinge.
[0003] In the prior art, a folding screen mobile phone product usually corresponds to a set of dedicated bending test devices. In the development and verification stage of folding products, it is usually necessary to verify multiple bending radii. For conventional fixtures, new fixtures need to be redesigned, manufactured and purchased because the radius cannot be changed, which greatly increases the development cost. Summary of the Invention
[0004] In view of this, the purpose of the present application is to provide a folding screen testing fixture and its testing method. The fixture can adjust the bending radius, which greatly improves the testing efficiency of bending radius verification.
[0005] Based on the above purpose, the present application provides a folding screen testing fixture, which includes:
[0006] A folding screen testing fixture, which includes:
[0007] A first clamping member, a second clamping member and an adjustment module; the first clamping member and the second clamping member are arranged on the adjustment module on the same side;
[0008] The first clamping member is used to clamp a first part of the folding screen, and the second clamping member is used to clamp a second part of the folding screen;
[0009] The adjustment module includes a sliding member and a driving member,
[0010] The sliding member includes a first sliding member and a second sliding member,
[0011] The first clamping member is connected to the first sliding member through a first rotating member, and the second clamping member is connected to the second sliding member through a second rotating member,
[0012] The driving component is used to drive the first sliding component and the second sliding component to move. When the first sliding component and the second sliding component move, they respectively drive the first clamping component and the second clamping component connected thereto to move synchronously, so as to adjust the interval between the first clamping component and the second clamping component and adjust the bending radius of the folding screen test fixture.
[0013] In one embodiment, the first clamping component is configured to rotate along the first rotating component, and the second clamping component is configured to rotate along the second rotating component.
[0014] Preferably, the first rotating component is connected to a first driving device, and the second rotating component is connected to a second driving device.
[0015] In one embodiment, the mechanisms of the first sliding component and the second sliding component are the same.
[0016] Preferably, the first sliding component and the second sliding component are respectively in an L shape.
[0017] Preferably, the first sliding component includes a first base and a first main body. A first protrusion is provided on the end surface of the first main body away from the first base side. The first protrusion extends along the direction of the first main body, and the first base has at least one first through hole.
[0018] Preferably, the second sliding component includes a second base and a second main body. A second protrusion is provided on the end surface of the second main body away from the base side. The second protrusion extends along the main body.
[0019] Preferably, the shape of the first through hole matches the shape of the first protrusion.
[0020] Preferably, the first protrusion is columnar or cuboid.
[0021] Preferably, the first base, the first main body and the first protrusion are integrally formed.
[0022] Preferably, the second base, the second main body and the second protrusion are integrally formed.
[0023] Preferably, the thickness of the first base is greater than or equal to the thickness of the first main body.
[0024] Preferably, the length of the first base is less than the length of the first main body.
[0025] In one embodiment, first teeth are respectively provided on the inner surfaces of the first sliding component and the second sliding component.
[0026] Preferably, the first teeth are configured to extend along the width direction of the first sliding member or the second sliding member;
[0027] Preferably, when the first sliding member and the second sliding member are combined, the first teeth on their inner surfaces face each other.
[0028] In one embodiment, the driving member includes a rotating shaft having a connecting end disposed between the first sliding member and the second sliding member;
[0029] Preferably, second teeth are provided on the outer periphery of the connecting end, and the second teeth are respectively engaged with the first teeth on the inner surface of the first sliding member and the first teeth on the inner surface of the second sliding member.
[0030] In one embodiment, scale lines are provided on the first protrusion;
[0031] Preferably, the first protrusion is coated with a fluorescent coating;
[0032] Preferably, the fluorescent coating covers the scale lines;
[0033] Preferably, the first protrusion is coated with a reflective coating;
[0034] Preferably, the reflective coating at least covers the scale lines.
[0035] In one embodiment, after the first sliding member and the second sliding member are combined, they form a square shape, the first protrusion is embedded in the second through hole, and the second protrusion is embedded in the first through hole.
[0036] In one embodiment, for a folding screen test fixture, the length of the first base is the same as or substantially the same as the thickness of the first clamping member, and the length of the second base is the same as or substantially the same as the thickness of the second clamping member;
[0037] Preferably, the first clamping member includes a first fixing portion and a first supporting member, the length of the first base is the same as or substantially the same as the thickness of the first fixing portion, and one side end of the first fixing portion has the first rotating member.
[0038] Based on the same inventive concept, the present application proposes a bending machine having a base on which the above-mentioned folding screen test fixture is installed.
[0039] In one embodiment, the first clamping member and the second clamping member are placed on the bending machine;
[0040] The adjustment module is used to adjust so that the first clamping member and the second clamping member reach preset positions respectively;
[0041] Fix the first clamping member and the second clamping member, and place the folding screen between the first clamping member and the second clamping member;
[0042] Use the bending machine to drive the folding screen test fixture for bending test.
[0043] Compared with the prior art, the folding screen test fixture provided by the present application realizes the test of folding screens with different bending radii by setting an adjustment module to adjust the distance between the first clamping member and the second clamping member, thereby greatly improving the efficiency of the bending verification stage and reducing the fixture cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0044] In order to more clearly illustrate the technical solutions in the present application or related technologies, the following will briefly introduce the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings in the following description are only embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0045] Figure 1 FIG. 15 is a schematic structural diagram of an existing folding screen test fixture;
[0046] Figure 2 FIG. 19 is a schematic structural diagram of the folding screen test fixture according to the embodiment of the present application;
[0047] Figure 3 is Figure 2 FIG. 25 is a schematic structural diagram of the folding screen test fixture of the embodiment for placing the folding screen;
[0048] Figure 4 is Figure 2 FIG. 31 is a schematic structural diagram of the adjustment module in FIG. 25;
[0049] Figure 5 FIG. 35 is a schematic structural diagram of the folding screen test fixture of another embodiment of the present application for placing the folding screen;
[0050] Figure 6 is Figure 5 FIG. 41 is a schematic structural diagram of the folding screen test fixture of the embodiment for placing the folding screen;
[0051] Figure 7 is Figure 5 FIG. 47 is a schematic structural diagram of the folding screen test fixture of the embodiment when bent at the minimum bending radius;
[0052] Figure 8 is Figure 5 FIG. 53 is a schematic structural diagram of the folding screen test fixture of the embodiment when bent at the maximum bending radius;
[0053] Figure 9Schematic diagram of the test method for the folding screen test fixture according to the embodiments of the present application. Detailed implementation manners
[0054] To make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0055] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the ordinary meanings understood by those of ordinary skill in the art to which the present application belongs. The "first", "second" and similar terms used in the embodiments of the present application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0056] A folding screen (such as folding the screen left and right or up and down, the folding screen includes a first part and a second part, which combine to form an entire screen) is a new type of display device using foldable screen technology, mainly applied to mobile terminals such as mobile phones and tablet computers. The screen of the folding screen is usually made of special flexible materials such as AMOLED materials, and can be folded or unfolded during use to meet the usage requirements in different scenarios.
[0057] First of all, since the screen of the folding screen can be switched between the unfolded and folded states, the size of the folding screen can be flexibly changed to adapt to different needs: the large screen formed after the folding screen is unfolded can facilitate split-screen operations and display multiple application programs at the same time. Therefore, users can view documents while replying to messages, or watch videos while browsing the web, thereby improving work and learning efficiency; when the screen of the folding screen mobile phone is in the folded state, the entire device is smaller in size and convenient to carry; when a large screen is needed, the screen of the folding screen mobile phone can be quickly unfolded, thus meeting the dual needs of users for portability and large-screen display.
[0058] Moreover, the two actions of folding and unfolding the folding screen itself can also be assigned different instructions, thus innovating the interaction experience of folding screen mobile phones: the actions of folding and unfolding the screen of a folding screen mobile phone can be associated with specific operation functions, bringing a novel operation experience to users. For example, it can be set in the mobile phone to fold the screen of the folding screen to quickly enter a specific application or function interface; some folding screen mobile phones support the collaborative operation of the inner and outer screens. Users can perform different operations on different screens and achieve seamless switching and sharing of information. For example, view notifications on the outer screen and directly process detailed content on the large-size screen after unfolding the inner screen.
[0059] However, for mobile phones using folding screens, since the folding screen needs to undergo frequent folding and unfolding operations, it is necessary to conduct static and dynamic bending tests on it during the design stage. The bending fixtures currently used in the industry, as Figure 1 shown, mostly adopt the method of aligning and rotating based on bilateral gears 11 / 12. In this way, the frictional loss generated during the bending process can be reduced, but the rotation radius of the bending area is fixed, that is, once the design is finalized, the rotation radius of the bending of this fixture is fixed and cannot be adjusted. During the development and verification stage of the folding screen, a single folding screen usually needs to verify multiple bending radii. In this case, it is necessary to pre-plan the bending radius and then design the bending fixture. This requires purchasing multiple sets of fixtures with similar specifications but slightly different bending radii at the same time, that is, designing a bending fixture for each bending radius, which greatly increases the development cost. At the same time, there is a lack of comprehensive consideration of the rotation radius to be verified during the development stage. When it is necessary to supplement the verification of the rotation radius outside the verification plan, it is necessary to re-design the fixture. At this time, it is necessary to wait for the fixture (3 - 6 months for customized fixtures) to be obtained before verification, which increases the development cost and prolongs the time required for the verification stage.
[0060] Based on this, the applicant proposes a folding screen test fixture, which can adjust the bending radius on the same fixture, greatly saving the cost and time of bending radius verification and improving the test rigor.
[0061] The folding screen test fixture includes: a first clamping member, a second clamping member, and an adjustment module. The first clamping member and the second clamping member are located on the same side of the adjustment module. The first clamping member is used to clamp the first part of the folding screen, and the second clamping member is used to clamp the second part of the folding screen. The adjustment module includes a sliding member and a driving member. The sliding member includes a first sliding member and a second sliding member. The first clamping member is connected to the first sliding member through a first rotating member, and the second clamping member is connected to the second sliding member through a second rotating member. The driving member is used to drive the first sliding member and the second sliding member to move. When the first sliding member and the second sliding member move, they respectively drive the first clamping member and the second clamping member connected to them to move synchronously (when the first sliding member moves, it drives the first clamping member connected to it to move synchronously, and when the second sliding member moves, it drives the second clamping member connected to it to move synchronously) to adjust the interval between the first clamping member and the second clamping member and adjust the bending radius of the folding screen test fixture. For example, the first clamping member and the second clamping member are respectively connected to the corresponding sliding members through corresponding bearings or gears. The first clamping member and the second clamping member are configured to be rotatable respectively through the corresponding rotating members. In this way, by adjusting the bending radius through the adjustment module, the efficiency of the bending verification stage is greatly improved, and the fixture cost is reduced. The driving member has a locking structure. After adjusting the bending radius, the locking structure is used to lock the driving member to fix the bending radius. In this way, the required bending radius can be adjusted before the bending test, and the bending test can be carried out within the adjustment range of the adjustment module (through selection, this range covers all possible bending radii). This reduces the fixture development cost while improving the test efficiency. The first clamping member and the second clamping member are arranged along the driving member. After adjustment, it can also be locked through a locking mechanism to prevent rotation (changing the bending radius) during the test. The locking mechanism can be a positioning pin or a snap structure.
[0062] Next, the folding screen test fixture proposed in this application will be described in conjunction with the accompanying drawings.
[0063] As Figure 2 shown is a schematic structural diagram of the folding screen test fixture according to an embodiment of the present application. As Figure 3 shown is a schematic diagram of the folding screen test fixture clamping the folding screen to be tested.
[0064] The fixture 100 includes: a first clamping member 100a, a second clamping member 100b, and an adjustment module 110. The first clamping member 100a and the second clamping member 100b are respectively connected to one side of the adjustment module 110. Preferably, the first clamping member and the second clamping member are symmetrically arranged.
[0065] See Figure 4, the adjustment module includes a sliding member and a driving member; the sliding member includes a first sliding portion 111 and a second sliding member 112. Preferably, the mechanisms of the first sliding member and the second sliding member are the same. Both the first sliding portion 111 and the second sliding member 112 are L-shaped, with a perforation on one side and a protrusion on the other side, so that when the first sliding member and the second sliding member are combined, the protrusion of one sliding member is inserted into the perforation of the other sliding member.
[0066] First teeth are respectively provided on the inner surfaces of the first sliding member 111 and the second sliding member 112, and the teeth are configured to extend in the width direction (in the z direction). When the first sliding member and the second sliding member are combined, the first teeth on their inner surfaces face each other. That is, first teeth (not shown in the figure) are provided on the inner surface 111d of the first sliding member 111, and first teeth (not shown in the figure) are provided on the inner surface 112d of the second sliding member 112.
[0067] The driving member includes a rotating shaft 113, the rotating shaft has a connecting end 113a, the connecting end 113a is disposed between the first sliding member 111 and the second sliding member 112, and second teeth (not shown in the figure) extending along its axial direction are provided on the outer periphery of the connecting end 113a. The second teeth are respectively engaged with the first teeth on the inner surfaces of the first sliding member 111 and the second sliding member 112. During adjustment, based on the rotation of the rotating shaft, the first sliding member and the second sliding member engaged with the connecting end are driven to move synchronously (either moving towards each other or relatively synchronously, see Figure 4 ), so that the first clamping member and the second clamping member connected correspondingly move synchronously, and the interval between the first clamping member and the second clamping member is adjusted to realize the adjustment of the bending radius of the folding screen test fixture. During the bending test, the first clamping member 100a is used to clamp the first part of the folding screen 200. The second clamping member 100b is used to clamp the second part of the folding screen 200, and the first clamping member 100a and the second clamping member 100b can respectively rotate 110 along the adjustment module, thereby driving the folding screen 200 clamped by the first clamping member 1 and the second clamping member 2 to be unfolded and folded. For example, 100,000 times and 200,000 times of folding tests are carried out. The first clamping member and the second clamping member are arranged along the rotating shaft accordingly.
[0068] The first clamping member 100a includes a first fixing portion 100a2 and a first supporting member 100a1. One end of the first fixing portion 100a2 is fixed to the first sliding member 111 through a first rotating member, and the first supporting member has a first supporting plane on which the first part of the folding screen is placed.
[0069] The second clamping member includes a second fixing portion 100b2 and a second supporting member 100b1. One end portion of the second fixing portion 100b2 is fixed to the second sliding member 112 through a second rotating member. The second supporting member has a second supporting plane on which the second portion of the folding screen is placed. Preferably, the first clamping member and the second clamping member are symmetrically arranged along the axis of the rotating shaft 113. After the first clamping member 100a and the second clamping member 100b are respectively fixed to the adjustment module 110, there is a gap therebetween (to avoid interfering with the folding screen thereon). The thickness of the first fixing portion is the same as or substantially the same as the thickness of the first supporting member.
[0070] The first sliding member 111 includes a first base portion 111b and a first main body portion 111a. A first protrusion 111a1 is provided on the end surface of the first main body portion away from the base portion side, and the first protrusion 111a1 extends along the main body portion 111a. The first protrusion 111a1 is columnar or cubic. The first base portion 111b has a first through hole 111c, and the shape of the first through hole 111c matches the shape of the first protrusion 111a1. The first base portion, the first main body portion, and the first protrusion can be integrally formed. Preferably, the thickness of the first base portion 111b (in the x direction) is greater than or equal to the thickness of the first main body portion (in the y direction). The length of the first base portion (in the y direction) is less than the length of the first main body portion (in the x direction).
[0071] The second sliding member 112 includes a second base portion 112b and a second main body portion 112a. A second protrusion 112a1 is provided on the end surface of the second main body portion away from the base portion side, and the second protrusion 112a1 extends along the main body portion 112a. The second protrusion 112a1 is columnar or cubic. The second base portion has a second through hole 112c, and the shape of the second through hole 112c matches the shape of the second protrusion. The second base portion 112b, the second main body portion 112a, and the second protrusion 112a1 can be integrally formed.
[0072] After the first sliding member and the second sliding member are combined, they form a quadrilateral shape. The first protruding portion is inserted into the second perforation, and the end portion of the first main body portion on the side of the first protruding portion can abut against the second base portion; the second protruding portion is inserted into the first perforation, and the end portion of the second main body portion on the side of the second protruding portion can abut against the first base portion. The connecting end of the rotating shaft is located between the first main body portion of the first sliding member and the second main body portion of the second sliding member. The second teeth provided on the outer periphery of the connecting end of the rotating shaft are respectively engaged with the first teeth on the inner surfaces of the first sliding member and the second sliding member. Based on the rotation of the rotating shaft, the first sliding member and the second sliding member engaged therewith are synchronously moved to adjust the interval between the first clamping member and the second clamping member. In this embodiment, the first main body portion and the second main body portion are symmetrically arranged along the rotating shaft, and based on the rotation of the rotating shaft, the first sliding member and the second sliding member engaged therewith are synchronously moved. In the design, based on the size of the connecting end, perforations are formed on the first base portion and the second base portion. After the first sliding member and the second sliding member are combined, the connecting end is located between the first main body portion of the first sliding member and the second main body portion of the second sliding member.
[0073] In one embodiment, a plurality of perforations may be formed along the length direction on the first base portion and the second base portion to match the connecting ends of different sizes (to satisfy that after the first sliding member and the second sliding member are combined, they form a quadrilateral shape, and by rotating the connecting end, the first main body portion and the second main body portion are synchronously moved towards or away from each other). Preferably, the length of the first base portion is the same as or substantially the same as the thickness of the first fixing portion. The thickness of the first fixing portion is the same as or substantially the same as the thickness of the first supporting member. In this way, it can be laid flat before bending (in the normal state).
[0074] In one embodiment, refer to Figure 4, after the first sliding member and the second sliding member are combined, the first protruding portion is embedded in the second through hole and at least partially protrudes from the second base portion, and the second protruding portion is embedded in the first through hole and at least partially protrudes from the first base portion. Based on the rotation of the rotating shaft, the first sliding member and the second sliding member engaged therewith are synchronously moved, so that the first clamping member and the second clamping member connected thereto are synchronously moved to adjust the interval between the first clamping member and the second clamping member. Preferably, scale lines are respectively provided on the first protruding portion 111a1 and the second protruding portion 112a1, and the bending radius (1mm, 2mm, 3mm, 4mm, etc.) can be conveniently read through the scale lines. In one embodiment, the rotating shaft can be connected to a handle and adjusted manually (such as manually adjusting in combination with the scale line to confirm the bending radius). In another embodiment, the rotating shaft can be connected to a handle and connected to a driving motor for adjustment by an electric method. The pitch of the first teeth on the inner surfaces of the first sliding member and the second sliding member is known, and the bending radius can be adjusted by the pitch. For example, based on the known pitch of the first teeth and the required bending radius, the interval between the first clamping member and the second clamping member is known when they are in a flat state, so as to construct a driving model and establish the corresponding relationship between the bending radius and the rotation of the rotating shaft 113. In this way, based on the required bending radius, the required rotation angle (or number of turns) can be calculated. When the rotating shaft is rotated by driving the motor, the bending radius can be quickly adjusted. At this time, the scale lines on the first protruding portion and the second protruding portion can be combined for auxiliary confirmation. Preferably, the scale line is coated with a fluorescent coating, so that the adjusted bending radius can still be confirmed in a dark light environment. Preferably, the scale line is coated with a reflective coating for quick confirmation in a weak light environment.
[0075] After the first sliding member and the second sliding member are combined, the first protruding portion is embedded in the second through hole and at least partially protrudes from the second base portion, the second protruding portion is embedded in the first through hole and at least partially protrudes from the first base portion, the connecting portion of the rotating shaft is located in the middle of the first sliding member or the second sliding member, and the first clamping member and the second clamping member are symmetrically arranged along the axis of the rotating shaft. Preferably, during the bending test, the axis of the rotating shaft corresponds to the folding line of the folding screen, that is, the projection of the folding line of the folding screen on the jig falls on the axis of the rotating shaft.
[0076] In one embodiment, recesses are respectively provided on the first clamping member and the second clamping member, and the recesses are used for placing the folding screen, and the depth of the recesses is greater than or equal to the thickness of the folding screen.
[0077] In one embodiment, clamps are respectively provided on the first clamping member and the second clamping member for fixing the first part and the second part of the folding screen, and the clamps have anti-scratch materials such as selected from silicone, polyurethane, etc.
[0078] As Figure 1 a deformation of the embodiment, such as Figure 5The structural schematic diagram of the folding screen test fixture according to another embodiment of the present application is shown as follows. Figure 6 is Figure 5 the structural schematic diagram of the folding screen placement structure of the folding screen test fixture of the embodiment. Different from Figure 1 the embodiment, two adjustment modules are provided. The structures of the two adjustment modules are the same. The two side ends of the first clamping member and the second clamping member are respectively connected to the adjustment modules, improving the stability of bending. At this time, the axes of the rotation shafts of the two adjustment modules are coaxial, and the first clamping member and the second clamping member are symmetrically arranged along the axis of the rotation shaft. The structures of the first clamping member and the second clamping member are the same, and only the structure of the first clamping member will be described. The first clamping member includes a first fixing portion and a first supporting member. A first rotating member is provided at one end of the first fixing portion. The first rotating member is connected to a first sliding member, preferably, to the side surface of the first base portion of the first sliding member. The first supporting member has a first supporting plane, and the first supporting plane is used to place the first part of the folding screen. The first rotating member is matched with a driving device. Based on the driving of the driving device, the first rotating member rotates, and then drives the first clamping member to rotate a preset angle (such as 90°). Preferably, the first rotating member rotates by the constant torque driving of the driving device. In this embodiment, the driving device can be provided on one side of the first clamping member. The driving device can also be provided on both sides of the first clamping member respectively. The driving device is electrically connected to the control module of the bending machine, and the driving device acts based on the control of the control module to adjust the bending radius.
[0079] As Figure 7 shown as Figure 5 the structural schematic diagram of the folding screen test fixture of the embodiment when bent at the minimum bending radius; Figure 8 is Figure 5 the structural schematic diagram of the folding screen test fixture of the embodiment when bent at the maximum bending radius. It can be seen from the figure that by adjusting the rotation shaft of the adjustment module, the interval between the first clamping member and the second clamping member is adjusted to achieve different bending radii, and then the test of folding screens with different bending radii is realized, greatly improving the efficiency of the bending verification stage and reducing the fixture cost. The rotation shaft can be rotated manually or by a power tool.
[0080] In one embodiment, based on the pitch of the first teeth on the inner surfaces of the known first sliding member and second sliding member, the bending radius can be adjusted by the pitch. For example, based on the pitch of the known first teeth and the required bending radius, the distance between the first clamping member and the second clamping member is known, so that the required rotation angle can be deduced, and a driving model can be constructed to establish the corresponding relationship between the bending radius and the rotation of the rotating shaft. When using a motor to drive the rotation of the rotating shaft, the control module inputs the bending radius, and after triggering, the rotating shaft adjusts the corresponding angle. The first sliding member and the second sliding member are made of stainless steel, aluminum alloy, aluminum-magnesium alloy or titanium alloy, ensuring a certain mechanical strength while achieving light weight. The area where the first teeth are provided on the inner surface adopts a nitriding process to improve strength and wear resistance at the same time.
[0081] During the bending test, place the folding screen on a folding screen test fixture (such as a preset base). For example, the first clamping member fixes the first part of the folding screen. The second clamping member fixes the second part of the folding screen. The clamping forces of the first clamping member and the second clamping member are evenly distributed to avoid local stress concentration (usually controlled by air pressure / hydraulic pressure, this part is a conventional setting and will not be elaborated here in detail). Place the fixture on a bending machine. Based on the driving parts on the bending machine (such as a constant torque motor / servo motor / pneumatic drive to ensure the stability and repeatability of the action), drive the first clamping member and the second clamping member to rotate along the matching adjustment module respectively, so as to drive the first clamping member 1 and the second clamping member 2 to rotate / synchronously rotate to clamp the folding screen for unfolding and folding (the bending angle of folding is, for example, 180° (also known as folding in half), and custom angle folding (such as 90°, 120°, etc.) can also be performed) to conduct the bending test. When it is necessary to adjust the bending radius, only need to rotate the rotating shaft to obtain the required bending radius, and then realize the test of folding screens with different bending radii, greatly improving the efficiency of the bending verification stage. The bending speed, such as 0.5 - 10 times per second, and it is necessary to avoid non-genuine wear caused by too fast speed. It should be noted that multiple folding screens can be tested simultaneously on the bending machine. At this time, there are bases and driving parts on it that are matched with the placement of the folding screen test fixture. The bending machine has a control module, a counting unit, and an image acquisition module. The counting unit is used to measure the test data (such as the number of bends). The image acquisition module is linked with the counting unit. After a predetermined number of bends (such as 5000 times, 10000 times, 20000 times, 50000 times, 60000 times, 70000 times, 80000 times, 90000 times, 100000 times), the image acquisition module takes pictures of the folding screen, so that the operator or the background can evaluate the folding effect based on the taken pictures (facilitating the timely discovery of problems). In an embodiment, the bending machine has a control module electrically connected to a motor matched with the adjustment module. Based on an instruction, the adjustment module (adjusting the bending radius) can be adjusted, and after adjustment, the bending test is carried out.
[0082] In an embodiment, the bending machine has a control module electrically connected to a motor matched with the adjustment module. Based on an instruction, the adjustment module (adjusting the bending radius) can be adjusted, and after adjustment, the bending test is carried out.
[0083] As Figure 2Variant of the embodiment, a locking mechanism is provided on the rotating shaft. After the bending radius of the rotating shaft is adjusted, the locking mechanism locks the rotating shaft to prevent it from rotating (i.e., locks the bending radius), so as to avoid rotation (changing the bending radius) during the test. The locking mechanism can be a positioning pin or a snap structure.
[0084] Based on the same inventive concept, referring to Figure 9 as shown, another embodiment of the present application also discloses a folding screen testing method, which includes the following steps:
[0085] Step S10: Place the first clamping member and the second clamping member on the bending machine.
[0086] Step S20: Adjust the adjustment module to a preset position (adjust to the set bending radius); in this step, it can be adjusted manually, such as rotating and combining the scale lines on the first protrusion and the second protrusion for auxiliary confirmation. Or it can be adjusted electrically. Based on the model of the bending radius and rotation, input the required bending radius, and the control module controls the motor electrically connected to it to adjust the bending radius (and can be combined with the scale lines on the first protrusion and the second protrusion for secondary confirmation). In this step, when there are adjustment modules on both sides of the first clamping member and the second clamping member respectively, in the manual mode, it can be adjusted one side at a time until it is adjusted to the preset position (in practice, one side can be adjusted, the first clamping member and the second clamping member are driven to move, and the other side is confirmed again in combination with the scale lines). In the automatic mode, both sides can be adjusted simultaneously and confirmed again in combination with the scale lines after adjustment.
[0087] Step S30: Fix the first clamping member and the second clamping member, and place the folding screen on the first clamping member and the second clamping member (predetermined position); for example, place the folding screen on the concave position on the first clamping member and the second clamping member.
[0088] Step S40: Use the bending machine to drive the folding screen test fixture to perform bending tests (folding and unfolding) on the folding screen until a preset number of times (such as 100,000 times, 200,000 times, 250,000 times, etc., specific numbers are not limited). In this way, by adjusting the adjustment module to a preset position (obtaining the required bending radius), the development cost of the fixture is reduced while the test efficiency is improved. After the test, it can continue to be tested, or it can continue to be tested after adjusting to the required bending radius, reducing the time for fixture switching and waiting for the fixture, and improving the test efficiency. This method adjusts the interval between the first clamping member and the second clamping member through the adjustment module to achieve different bending radii, and then realizes the test of folding screens with different bending radii, greatly improving the efficiency of the bending verification stage and reducing the fixture cost.
[0089] In one embodiment, step S20 further includes: after adjusting to a preset position, the rotating shaft is locked by a locking mechanism to prevent it from rotating, so as to avoid rotation (changing the bending radius) during the test.
[0090] In one embodiment, step S40 further includes: based on the counting unit, the number of bends is counted. After bending a predetermined number of times (such as 10,000 times, 20,000 times, 50,000 times, 60,000 times, 70,000 times, 80,000 times, 90,000 times, 100,000 times, 150,000 times, 200,000 times), the folding screen is photographed by the image acquisition module. The photographed information is transmitted to the background or the processing module, and the information processed by the processing module is transmitted to the background. In this way, the operator or the background can evaluate the folding effect based on the photographed pictures (facilitating timely problem discovery). The predetermined number of times can also be taking pictures every 1,000 bends, 5,000 bends or 10,000 bends. In this way, the operator or the background can evaluate the folding effect based on the photographed pictures (facilitating timely problem discovery). In this embodiment, the photographing process is relatively fast and basically does not occupy the bending process, so as to realize the monitoring of the bending process. If an abnormality occurs during the process, adjustments or termination can be made. The counting unit, the image acquisition module and the processing module are respectively electrically connected to the control module of the bending machine.
[0091] In one embodiment, step S40 further includes:
[0092] Based on the counting unit, the number of bends is counted. After bending a predetermined number of times, the folding screen is photographed by the image acquisition module, and the photographed information is displayed by the image display unit (such as a display panel). In this way, the operator can evaluate the folding effect based on the photographed pictures. The image acquisition module is a CCD (Charge Coupled Device) camera or a CMOS (Complementary Metal Oxide Semiconductor) camera.
[0093] In one embodiment, step S40 further includes: the driving devices of the first clamping member and the second clamping member are respectively electrically connected to the control module and perform bending actions based on its control.
[0094] Although the present application has been described in conjunction with specific embodiments of the present application, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art based on the foregoing description.
[0095] It should be noted that some embodiments of the present application have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the above embodiments and still achieve the desired results. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.
[0096] Embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application shall be included within the protection scope of the present application.
Claims
1. A folding screen test fixture, characterized in that, Comprising: A first clamping member, a second clamping member and an adjustment module; the first clamping member and the second clamping member are disposed on the adjustment module on the same side; The first clamping member is used for clamping the first part of the folding screen, and the second clamping member is used for clamping the second part of the folding screen; The adjustment module includes a sliding member and a driving member, The sliding member includes a first sliding member and a second sliding member, The first clamping member is connected to the first sliding member through a first rotating member, and the second clamping member is connected to the second sliding member through a second rotating member, The driving member is used for driving the first sliding member and the second sliding member to move. When the first sliding member and the second sliding member move, they respectively drive the first clamping member and the second clamping member connected thereto to move synchronously, so as to adjust the interval between the first clamping member and the second clamping member and adjust the bending radius of the folding screen test fixture.
2. The folding screen test fixture according to claim 1, wherein The first clamping member is configured to rotate along the first rotating member, and the second clamping member is configured to rotate along the second rotating member, Preferably, the first rotating member is connected to a first driving device, and the second rotating member is connected to a second driving device.
3. The folding screen test fixture according to claim 1, wherein The mechanisms of the first sliding member and the second sliding member are the same; Preferably, the first sliding member and the second sliding member are respectively in an L shape; Preferably, the first sliding member includes a first base and a first main body portion. A first protrusion is provided on the end surface of the first main body portion away from the first base side, and the first protrusion extends along the direction of the first main body portion. The first base has at least one first through hole; Preferably, the second sliding member includes a second base and a second main body portion. A second protrusion is provided on the end surface of the second main body portion away from the base side, and the second protrusion extends along the main body portion. The second base has at least one second through hole; Preferably, the shape of the first through hole matches the shape of the first protrusion; Preferably, the first protrusion is in a columnar shape or a cuboid shape; Preferably, the first base, the first main body portion and the first protrusion are integrally formed; Preferably, the second base, the second main body portion and the second protrusion are integrally formed; Preferably, the thickness of the first base is greater than or equal to the thickness of the first main body portion; Preferably, the length of the first base is less than the length of the first main body portion.
4. The folding screen test fixture according to claim 3, wherein First teeth are respectively provided on the inner surfaces of the first sliding member and the second sliding member; Preferably, the first teeth are configured to extend along the width direction of the first sliding member or the second sliding member; Preferably, when the first sliding member and the second sliding member are combined, the first teeth on their inner surfaces face each other.
5. The folding screen test fixture according to claim 4, wherein The driving member includes a rotating shaft, and the rotating shaft has a connecting end, and the connecting end is disposed between the first sliding member and the second sliding member; Preferably, second teeth are provided on the outer periphery of the connecting end, and the second teeth are respectively engaged with the first teeth on the inner surface of the first sliding member and the first teeth on the inner surface of the second sliding member.
6. The folding screen test fixture according to claim 3, wherein scale lines are provided on the first protrusion; Preferably, the first protrusion is coated with a fluorescent coating; Preferably, the fluorescent coating covers the scale lines; Preferably, the first protrusion is coated with a reflective coating; Preferably, the reflective coating covers at least the scale lines.
7. The folding screen test fixture according to claim 3, wherein After the first sliding member and the second sliding member are combined, they form a square shape. The first protrusion is embedded in the second through hole, and the second protrusion is embedded in the first through hole.
8. The folding screen test fixture according to claim 3, wherein The length of the first base is the same as or substantially the same as the thickness of the first clamping member, and the length of the second base is the same as or substantially the same as the thickness of the second clamping member; Preferably, the first clamping member includes a first fixing portion and a first supporting member. The length of the first base is the same as or substantially the same as the thickness of the first fixing portion, and the first rotating member is provided at one end of the first fixing portion.
9. A bending machine, characterized in that, There is a base, and the base is installed with the folding screen test fixture according to any one of claims 1-8.
10. A folding screen testing method, characterized in that, Including the following steps: Place the first clamping member and the second clamping member on the bending machine; Use the adjustment module to adjust so that the first clamping member and the second clamping member reach preset positions respectively; Fix the first clamping member and the second clamping member, and place the folding screen on the first clamping member and the second clamping member; Use the bending machine to drive the folding screen test fixture to perform a bending test.