Folding screen testing device and testing system

Abstract

The embodiment of the invention provides a folding screen testing device and system, the folding screen testing device comprises a first base, an opening and closing mechanism, a driving motor, a lead screw and a transmission assembly, the opening and closing mechanism is arranged on the first base, the opening and closing mechanism comprises a first clamp and a second clamp, the second clamp is rotatably arranged around the first clamp, and the driving motor is driven by the driving motor; the rotating axis of the second clamp rotating around the first clamp is in the first direction, a screw rod of the lead screw is connected with an output rotating shaft of the driving motor and extends in the second direction, and the transmission assembly is connected with a nut of the lead screw and the second clamp and used for driving the second clamp to rotate around the first clamp after being subjected to driving force of the lead screw. A screw rod of the lead screw is provided with a threaded section, the two ends of the threaded section are provided with stopping pieces, and when the opening and closing mechanism is in the unfolded state and the folded state, nuts of the lead screw are located at the two ends of the threaded section respectively. The folding screen testing device and the folding screen testing system provided by the embodiment of the invention are high in testing efficiency, time-saving and labor-saving.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of testing electronic devices, and in particular, to a folding screen testing device and a testing system. Background Art

[0002] With the gradual development of flexible screen technology, foldable electronic devices have emerged. Foldable electronic devices have become a hot technology today due to their larger display area and good portability. In the process of using foldable electronic devices, by folding the foldable electronic devices, the electronic devices can be easily carried. By unfolding the foldable electronic devices, the large-screen display function of the electronic devices can be realized.

[0003] At present, in the process of testing the opening and closing performance and life of the flexible folding screen of a foldable electronic device, it is often necessary to repeatedly fold and unfold (that is, open and close) the flexible folding screen or the foldable electronic device. Generally, the flexible folding screen or the foldable electronic device can be opened and closed manually for testing. However, this manual opening and closing method is inefficient, time-consuming and labor-intensive. Summary of the invention

[0004] The embodiments of the present application provide a folding screen testing device and a testing system, which can at least solve the problems of low efficiency, time-consuming and labor-intensive opening and closing testing in the related art.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In the first aspect, an embodiment of the present application provides a folding screen testing device, which includes: a first base, an opening and closing mechanism, a driving motor, a lead screw and a transmission assembly, the opening and closing mechanism is arranged on the first base, the opening and closing mechanism includes: a first clamp and a second clamp, the first clamp and the second clamp are used to fix the target folding screen, the second clamp is rotatably arranged around the first clamp, and the rotation axis of the second clamp around the first clamp is along the first direction, the screw of the lead screw is connected to the output shaft of the driving motor, and the screw of the lead screw extends along the second direction, the transmission assembly is respectively connected to the nut of the lead screw and the second clamp, the transmission assembly is used to drive the second clamp to rotate around the first clamp after receiving the driving force of the lead screw, the second direction is perpendicular to the first direction, the screw of the lead screw has a threaded section, and both end ends of the threaded section have stoppers, when the opening and closing mechanism is in the unfolded state and the folded state, the nut of the lead screw is respectively located at the two end ends of the threaded section.

[0007] The folding screen test device provided in the embodiment of the present application, when the nut of the lead screw is driven by the driving motor to move to a fully unfolded state, one of the stoppers is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the excessive rotation of the driving motor, so as to facilitate the timely stopping of the driving motor. When the driving motor drives the lead screw nut to move to a fully folded state, the other stopper is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the excessive rotation of the driving motor, so as to facilitate the timely stopping of the driving motor and prevent the transmission component from overshooting. On the one hand, the folding screen test device provided in the embodiment of the present application replaces the manual opening and closing test with the automated opening and closing test, which can improve the test efficiency of the performance and life of the folding screen and save time and effort. On the other hand, the folding screen test device provided in the embodiment of the present application can prevent the transmission component from overshooting in rotation angle. On the other hand, since the problem of overshoot of the swing arm rotation angle has been overcome, the driving device can rotate at a faster speed and complete a single opening and closing test in a faster time, meeting the reproduction of the opening and closing time scenarios of foldable electronic devices in actual use, making the test scenarios of the folding screen testing device more in line with the actual use scenarios of foldable electronic devices.

[0008] In a possible implementation, the folding screen test also includes: a fixed frame mounted on the first base, the transmission assembly includes: a rack, a gear and a swing arm, the rack is connected to the nut of the lead screw, the nut of the lead screw is used to drive the rack to move back and forth in the second direction, the gear and the rack are matched without clearance, the gear is fixed to the fixed frame, the rotating shaft of the gear extends along the first direction, the swing arm is respectively connected to the rotating shaft of the gear and the second clamp, and the gear is used to drive the swing arm to rotate to drive the second clamp to rotate around the first clamp.

[0009] Since the rack and the gear are matched without clearance, they have the advantage of high precision and can prevent the swing arm 343 connected to the gear from swinging or shaking.

[0010] In a possible implementation, there are two groups of transmission components, the two groups of transmission components are arranged opposite to each other in the first direction, and the two groups of transmission components are respectively located on both sides of the opening and closing mechanism.

[0011] In this way, it is possible to prevent the second clamp and the swing arm from rotating and tilting during operation when a single transmission assembly is used.

[0012] In a possible implementation, the driving motor and the lead screw are both one, and the racks in the two sets of transmission assemblies are respectively connected to the lead screw.

[0013] The two swing arms driven by a single drive motor can be synchronized to ensure the stability of the second clamp when rotating around the first clamp.

[0014] In a possible embodiment, two swing arms respectively located in the two groups of transmission components are connected to form a combined swing arm, the two ends of the second clamp in the first direction are the first end and the second end, the connection between the combined swing arm and the second clamp is located between the first end and the second end, and the distance from the connection between the combined swing arm and the second clamp to the first end is equal to the distance from the connection between the combined swing arm and the second clamp to the second end.

[0015] When the two swing arms are two independent parts, although the synchronous movement of the two swing arms can be achieved, there are also cases where there are component manufacturing tolerances and component installation errors. Connecting the two swing arms to form a joint swing arm can further improve the synchronization of the two swing arms. And the connection between the joint swing arm and the second clamp is set on the central axis of the second clamp in the first direction. In this way, when the second clamp rotates around the first clamp, the connection points of the second clamp and the first clamp are evenly stressed, ensuring the stability of the opening and closing mechanism when it is working, and preventing the connection between the second clamp and the first clamp from breaking and being damaged.

[0016] In a possible embodiment, the folding screen testing device also includes: a connecting member, one end of the connecting member is connected to the combined swing arm, and the other end of the connecting member is connected to the second clamp, and the connecting member is used to allow the relative distance between the combined swing arm and the second clamp to change when the combined swing arm drives the second clamp to rotate around the first clamp.

[0017] The relative displacement difference between the swing arm and the second clamp during operation can be compensated by the connecting piece, thereby ensuring the opening and closing stability of the opening and closing mechanism and preventing the opening and closing mechanism from being damaged.

[0018] In a possible implementation, one end of the connecting member is fixedly connected to one of the second clamp and the combined swing arm, and the other end of the connecting member is slidably connected to the other of the second clamp and the combined swing arm.

[0019] In a possible implementation, the second clamp or the combined swing arm has two pulleys arranged in parallel, the rotation axes of the pulleys extend along the first direction, and the non-fixed end of the connecting member is clamped between the two pulleys.

[0020] The method of telescopically connecting the connecting piece with the second clamp or the combined swing arm is simple and easy. In addition, compared with the method in which the connecting piece itself is a telescopic piece, the connecting piece can also have a degree of freedom of rotation relative to the target telescopic connected part (the second clamp or the combined swing arm) between the two pulleys, thereby preventing the connecting piece from being damaged by the bending force.

[0021] In a possible implementation, the folding screen testing device further includes: a lifting platform, which is disposed on the first base, the opening and closing mechanism is connected to the lifting platform, and the lifting platform can be raised and lowered relative to the first base.

[0022] In this way, the opening and closing test can be adapted to folding screens or foldable electronic devices of different thicknesses.

[0023] In a possible implementation, the folding screen test device further includes: a height adjustment module, the height adjustment module includes: an external threaded rod and a rotating ring, one end of the external threaded rod is rotatably connected to the bottom of the lifting platform, an internal threaded hole is provided on the first base, the other end of the external threaded rod is matched and connected to the internal threaded hole, and the rotating ring is sleeved on the external threaded rod and fixedly connected. The lifting platform can be adjusted by the height adjustment module, and the method is simple and easy.

[0024] In a possible implementation, a scale is provided on the first base, and the scale is used to indicate the lifting height of the lifting platform, so as to intuitively observe the specific lifting height of the lifting platform.

[0025] In a possible implementation, the folding screen testing device also includes a second base and a support frame. The second base and the first base are arranged in an interlaced manner. The second base is located on the side of the first base that is away from the closing mechanism. The second base is connected to the nut of the lead screw. The nut of the lead screw is used to drive the second base to move back and forth in the second direction. The support frame is fixed to the second base. An avoidance opening is opened on the first base. The support frame is inserted into the avoidance opening. The rack is fixed to one end of the support member away from the second base.

[0026] The second base and the support frame are arranged in this way to reasonably utilize space and reduce the volume of the folding screen test device. The support frame passes through the avoidance opening to fix the rack, which can facilitate the connection between the rack and the lead screw on the one hand, and on the other hand, it can make the rack closer to the opening and closing mechanism, which is conducive to reducing the length of the swing arm and saving materials.

[0027] In a possible implementation, the folding screen testing device further includes: a shielding shell, a driving motor and a lead screw are arranged between the first base and the second base, and the shielding shell and the first base form a box body to enclose the driving motor, the lead screw and the second base.

[0028] The box structure formed by the shielding shell and the first base can shield the components under the first base to improve the appearance. It can also prevent the components under the first base (such as the lead screw and the drive motor) from contacting with external foreign objects and causing jamming. It can also prevent the test operator from touching the lead screw and the drive motor to ensure the personal safety of the test operator. In addition, the box structure formed by the shielding shell and the first base can also reduce the noise of the drive motor.

[0029] In a possible implementation manner, the fixing frame is a box structure, and the fixing frame cover is arranged outside a portion of the supporting frame, the rack and the gear.

[0030] The fixed frame of the box structure can shield the support frame, rack and gear to improve the appearance. It can also prevent the rack and gear from contacting with external foreign objects and causing jamming. In addition, it can also prevent the test operator from touching the gear and gear teeth to ensure the personal safety of the test operator.

[0031] In a possible implementation, the folding screen testing device further includes: a first camera and a second camera;

[0032] The second fixture and the first fixture are both light-transmitting structures. The first fixture has a first surface and a second surface opposite to the first surface. The first camera and the second camera are respectively arranged on the first surface side and the second surface side of the first fixture.

[0033] The first camera and the second camera can perform visual defect detection on the inward-folding foldable electronic device and the outward-folding foldable electronic device respectively.

[0034] In a possible implementation, it further includes: a lifting member, a first bracket and a second bracket, the bottom of the lifting member is fixed to the plane where the first base is located, the lifting member is provided with a slideway perpendicular to the plane where the first base is located, the first bracket and the second bracket are both slidably arranged in the slideway, one end of the first bracket and the second bracket are respectively connected to the slideway, the other ends of the first bracket and the second bracket respectively extend toward the opening and closing mechanism, the first camera is fixed to the end of the first bracket away from the lifting member, and the second camera is fixed to the end of the second bracket away from the lifting member. In this way, the distance between the first camera and the second camera relative to the opening and closing mechanism can be adjusted, which is conducive to the first camera and the second camera to obtain the best image information of the test piece.

[0035] In a possible implementation, the optical axes of the first camera and the second camera are perpendicular to the plane where the opening and closing mechanism is in the flattened state, and the lenses of the first camera and the second camera point to the side of the second fixture close to the first fixture, so that the images of the first camera and the second camera can better cover the folding screen to be tested, thereby ensuring the reliability of the visual defect detection of the target test piece by the first camera and the second camera.

[0036] In a possible embodiment, when the opening and closing mechanism is in a flattened state, the opening and closing mechanism is set at an angle to the plane formed by the first direction and the second direction, the angle between the opening and closing mechanism and the plane formed by the first direction and the second direction is between 15°-25°, and the plane formed by the first direction and the second direction is parallel to the plane where the first base is located.

[0037] In this way, it is possible to achieve both the convenience of assembling the target test piece on the opening and closing mechanism and the feasibility of the minimum height that the folding screen testing device can achieve while ensuring the reliability of the second camera's visual defect detection of the target test piece.

[0038] In a possible implementation, the folding screen testing device further includes: a pressing member, the pressing member being used to press a lock screen button of the foldable electronic device.

[0039] In this way, the foldable electronic device can be prevented from having its foldable screen locked by the screen lock key when the opening and closing mechanism is folded.

[0040] In a possible implementation, a torque sensor is provided at the connection between the swing arm and the gear, and the torque sensor is used to monitor the torque value at the connection between the swing arm and the gear.

[0041] When the torque sensor is too large, the folding screen test device needs to be debugged to ensure the stable operation of the folding screen test device.

[0042] On the second aspect, the present application provides a testing system, an environmental chamber, an electronic control device and a folding screen testing device as shown above, the electronic control device is electrically connected to the environmental chamber and the folding screen testing device, respectively, the environmental chamber has a containing cavity, the environmental chamber can adjust the environment in the containing cavity, such as temperature, humidity, light, etc., the folding screen testing device is arranged in the environmental chamber.

[0043] The test system provided in the embodiment of the present application can realize composite tests in various environments, and in the folding screen test device, when the nut of the lead screw is driven by the driving motor to move to a fully unfolded state, one of the stoppers is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the excessive rotation of the driving motor, so as to facilitate the timely stop of the driving motor. When the driving motor drives the lead screw nut to move to a fully folded state, another stopper is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the excessive rotation of the driving motor, so as to facilitate the timely stop of the driving motor and prevent the transmission component from overshooting. On the one hand, the folding screen test device provided in the embodiment of the present application replaces the manual opening and closing test with the automated opening and closing test, which can improve the test efficiency of the performance and life of the folding screen and save time and effort. On the other hand, the folding screen test device provided in the embodiment of the present application can prevent the transmission component from overshooting in rotation angle. On the other hand, since the problem of overshoot of the swing arm rotation angle has been overcome, the driving device can rotate at a faster speed and complete a single opening and closing test in a faster time, meeting the reproduction of the opening and closing time scenarios of foldable electronic devices in actual use, making the test scenarios of the folding screen testing device more in line with the actual use scenarios of foldable electronic devices.

[0044] In some embodiments of the present application, when the folding screen test device includes a first camera and a second camera, before the opening and closing mechanism works, the electric control device controls the first camera and the second camera to take pictures at the same time, and the electric control device determines whether the target folding screen is an inner folding screen or an outer folding screen according to the picture taking results of the first camera and the second camera. If the target folding screen is an inner folding screen, the electric control device controls the first camera to run, and the electric control device controls the second camera to stop running. If the target folding screen is an outer folding screen, the electric control device controls the second camera to run, and the electric control device controls the first camera to stop running. This allows the test system to be adapted to testing outer-folding foldable electronic devices and inner-folding foldable electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the unfolded structure of a foldable electronic device;

[0046] Figure 2 is a schematic diagram of a folded structure of a foldable electronic device;

[0047] Figure 3 A schematic diagram of a foldable screen in a foldable electronic device;

[0048] Figure 4 A schematic diagram of a test system provided in one embodiment of the present application;

[0049] Figure 5 A schematic diagram of the structure of an environmental chamber provided in one embodiment of the present application;

[0050] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the medium environmental chamber along the cutting line AA;

[0051] Figure 7 A schematic diagram of the structure of a folding screen testing device provided in one embodiment of the present application;

[0052] Figure 8 A partial structural schematic diagram of a folding screen testing device provided in one embodiment of the present application;

[0053] Figure 9a A partial structural schematic diagram of a folding screen testing device provided in one embodiment of the present application;

[0054] Figure 9b A schematic diagram of the structure of a screw rod of a lead screw provided in an embodiment of the present application;

[0055] Fig.10 A schematic diagram of the changes in the angle, speed, and acceleration of the drive motor during the opening and closing process of the folding screen test device;

[0056] Fig.11A partial structural schematic diagram of a folding screen testing device provided in one embodiment of the present application;

[0057] Fig.12 A partial structural schematic diagram of a folding screen testing device provided in one embodiment of the present application;

[0058] Fig.13 A partial structural schematic diagram of a folding screen testing device provided in one embodiment of the present application;

[0059] Fig.14 A schematic diagram of the structure of a folding screen testing device provided in one embodiment of the present application;

[0060] Fig.15 It is a schematic diagram of the structure of a foldable electronic device;

[0061] Fig.16 A flow chart of an opening and closing test provided in one embodiment of the present application.

[0062] Description of reference numerals:

[0063] 10- Foldable electronic devices;

[0064] 11-folding screen; 11a-first display part; 11b-second display part; 11c-folding display part;

[0065] 12-first main body; 13-second main body; 14-rotating part; 15-lock screen key;

[0066] 1000-test system;

[0067] 100-environmental chamber; 110-accommodation chamber; 120-opening and closing door;

[0068] 200-Electronic control device;

[0069] 300-Folding screen test device;

[0070] 310- feet;

[0071] 320-first base; 321-avoidance; 322-pointer;

[0072] 330-opening and closing mechanism; 331-first clamp; 332-second clamp; 3321-connecting member;

[0073] 340-transmission assembly; 341-rack; 342-gear; 343-swing arm; 343a-joint swing arm; 3431-pulley;

[0074] 350-driving motor; 360-lead screw; 361-threaded section; 362-stopper; 370-fixed frame; 380-lifting platform; 381-external threaded rod; 382-rotating ring; 383-scale; 384-slide rail;

[0075] 390 - second base; 391 - support frame; 392 - shielding shell; 393 - first camera; 394 - second camera; 395 - push button; 396 - lifting member; 3961 - slide; 397 - first bracket; 398 - second bracket. DETAILED DESCRIPTION

[0076] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0077] Foldable electronic devices are electronic devices with foldable screens. Foldable electronic devices can change the unfolded or folded state of the foldable screen and the device itself. Under different usage requirements, foldable electronic devices can be unfolded to an unfolded state or folded to a folded state.

[0078] Foldable electronic devices can be terminal products such as mobile phones, tablet computers (pads), televisions, smart wearable products (for example, smart watches, smart bracelets, etc.), virtual reality (VR) devices, augmented reality (AR) devices, and can also be professional shooting equipment such as digital cameras, SLR cameras, micro-single cameras, sports cameras, etc. In the embodiments of the present application, there is no restriction on the specific type of foldable electronic devices used for the test target, as long as they are electronic devices with foldable screens. For ease of understanding, the embodiments of the present application are described by taking the foldable electronic device as a foldable mobile phone as an example.

[0079] Figure 1 is a schematic diagram of the unfolded structure of a foldable electronic device 10, referring to Figure 1As shown, under normal circumstances, the foldable electronic device 10 generally includes: a folding screen 11, a first main body 12, a second main body 13 and a rotating part 14. Specifically, the first main body 12 and the second main body 13 are respectively connected to the two sides of the rotating part 14, and the rotating part 14 is used to enable the first main body 12 and the second main body 13 to be relatively unfolded and folded, wherein the structures of the first main body 12 and the second main body 13 may be the same, may not be completely the same, or may be completely different. It is understandable that in addition to using one rotating part 14 and two main bodies to form a two-layer folding structure, the foldable electronic device 10 may also use multiple rotating parts 14 and more than two main bodies to form a folding structure with more layers. In the example of this application, only two main bodies are used for illustration.

[0080] The folding screen 11 is attached to a surface where the first main body 12 and the second main body 13 are close to each other or away from each other when they are folded. Figure 1 As shown in FIG. 1 , from the user's observation angle, when the foldable electronic device 10 is in a flattened state, the user faces the folding screen 11, and the folding screen 11 is attached to the upper surfaces of the first body portion 12 and the second body portion 13. During the process of relative unfolding and folding of the first body portion 12 and the second body portion 13, the folding screen 11 is unfolded and folded simultaneously with the first body portion 12 and the second body portion 13.

[0081] like Figure 1 As shown in , the foldable electronic device 10 can be unfolded to a flat state; Figure 2 As shown in Figure 2 1 is a schematic diagram of the folded structure of a foldable electronic device 10. The foldable electronic device 10 can also be folded to a folded state. Of course, the foldable electronic device 10 can also be unfolded or folded to an intermediate state, and the intermediate state can be any state between the flattened state and the folded state. The folding screen 11 is a bendable structure. The folding screen 11 moves with the first main body 12 and the second main body 13. The first main body 12 and the second main body 13 can drive the folding screen 11 to unfold or fold, so that the foldable electronic device 10 can be unfolded or folded to a flattened state, a folded state or an intermediate state.

[0082] When the foldable electronic device 10 is in the folded state, the foldable screen 11 is located inside the first main body 12 and the second main body 13, and the foldable electronic device 10 is an inner-screen folding device; when the foldable electronic device 10 is in the folded state, the foldable screen 11 is located outside the first main body 12 and the second main body 13, and the foldable electronic device 10 is an outer-screen folding device. Figure 1 and Figure 2 The foldable electronic device 10 shown in the figure is a screen-outward folding device.

[0083] Figure 3is a schematic diagram of a foldable screen 11 in a foldable electronic device 10, referring to Figure 3 As shown, the folding screen 11 generally includes: a folding display portion 11c and a first display portion 11a and a second display portion 11b respectively located on both sides of the folding display portion 11c. During the use of the foldable electronic device 10, the first display portion 11a and the second display portion 11b generally do not deform, and the folding display portion 11c deforms so that the folding screen 11 can be relatively unfolded and folded. For example, when the foldable electronic device 10 is completely folded, the display folding portion can be deformed into a water drop shape.

[0084] It should be noted that Figure 3 The middle dotted line is only used to distinguish the first display portion 11a, the second display portion 11b and the display folding portion, and does not indicate a structural line. The folding screen 11 is still a complete screen. In addition, the length and width of the first display portion 11a and the second display portion 11b can be the same, not completely the same, or completely different.

[0085] Since the foldable electronic device 10 can be switched between the unfolded state and the folded state, when the user uses the foldable electronic device 10 to browse web pages, information, videos, play games, etc., the foldable electronic device 10 can be switched from the folded state to the unfolded state, which can achieve a large-screen display, provide the user with richer information, and bring the user a better user experience. When the user has finished using the foldable electronic device 10, the foldable electronic device 10 can be switched from the unfolded state to the folded state. In this way, the volume of the foldable electronic device 10 can be reduced, making it easier to store the foldable electronic device 10.

[0086] It can be seen that in the process of the user using the foldable electronic device 10, it is necessary to frequently drive the foldable electronic device 10 to switch between the unfolded state and the folded state. In this way, the folding display part 11c of the folding screen 11 frequently switches between the bent state and the flat state. In the long run, the folding display part 11c and the connection between the folding display part 11c and the first display part 11a and the second display part 11b are prone to cracks and fractures, affecting the service life of the folding screen 11. In order to manufacture a foldable electronic device 10 that can meet the needs of users, it is often necessary to test the performance and life of the folding screen 11, that is, repeatedly folding and unfolding (that is, opening and closing) the folding screen 11 or the foldable electronic device 10 to test the cracks or fractures of the folding display part 11c and the connection between the folding display part 11c and the first display part 11a and the second display part 11b. Generally, the foldable electronic device 10 or the folding screen 11 can be opened and closed manually for testing. However, this manual opening and closing method for testing the performance and life of the folding screen 11 is inefficient, time-consuming and labor-intensive.

[0087] In addition, in the related art, there is also a method of using automated equipment to test the opening and closing of the foldable electronic device 10 or the folding screen 11. In this method, the first display part 11a and the second display part 11b of the folding screen 11 are fixed by a clamp, or the first main body part 12 and the second main body part 13 of the foldable electronic device 10 are fixed by a clamp, and then the driving device is used to rotate the swing arm 343 to drive the clamp to open and close. However, this method is generally only suitable for tests with a slow opening and closing speed. A fast opening and closing speed will cause the swing arm 343 to rotate at an angle overshoot or the swing arm 343 to swing. Among them, the overshoot of the swing arm 343 rotation angle will cause the unfolding angle of the foldable electronic device 10 to exceed the preset value, so that the rotating part 14 of the foldable electronic device 10 is damaged, causing the foldable electronic device 10 to be damaged. The swinging of the swing arm 343 will cause the rotating part 14 of the foldable electronic device 10 and the folding screen 11 to repeat actions within a range of angles, which is inconsistent with the actual usage scenario that needs to be reproduced, and will also affect the test results of the opening and closing test.

[0088] In order to solve the above problems, an embodiment of the present application provides a folding screen testing device and a testing system. In the folding screen testing device, the driving device in the related technology rotates to drive the swing arm to drive the clamp to open and close, and is changed to a driving device that rotates to drive the lead screw, and the lead screw drives the transmission assembly, and then the transmission assembly cooperates with the clamp to open and close.

[0089] On the one hand, the folding screen test device provided by the embodiment of the present application replaces the manual opening and closing test with the automated opening and closing test, which can improve the test efficiency of the performance and life of the folding screen, saving time and effort. On the other hand, in the folding screen test device provided by the embodiment of the present application, when the nut of the lead screw driven by the driving motor moves to the fully unfolded state of the opening and closing mechanism, one of the stoppers is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the excessive rotation of the driving motor, so as to facilitate the timely stop of the driving motor. When the nut of the lead screw driven by the driving motor moves to the fully folded state, another stopper is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the excessive rotation of the driving motor, so as to facilitate the timely stop of the driving motor, and prevent the occurrence of overshoot of the rotation angle of the transmission component. On the other hand, since the problem of overshoot of the swing arm rotation angle is overcome, the driving device can rotate at a faster speed, and a single opening and closing test can be completed in a faster time, which meets the reproduction of the opening and closing time scene of the foldable electronic device in actual use, so that the test scene of the folding screen test device is more in line with the actual use scene of the foldable electronic device.

[0090] In addition, the test system provided in the embodiment of the present application also includes an environmental chamber, which can adjust the environment of the folding screen testing device, such as temperature, humidity, light and other factors, and can better restore the scene when the foldable electronic device is in use, making the test results of the folding screen testing device more accurate.

[0091] Please refer to the accompanying drawings and specific embodiments below for a detailed description of the folding screen testing device and testing system provided in the embodiments of the present application.

[0092] During the research and development stage of the foldable electronic device 10, the main reasons for the cracks and breaks in the folding display part 11c of the folding screen 11 and the joints between the folding display part 11c and the first display part 11a and the second display part 11b include: the bending speed of the folding screen 11, the number of times the folding screen 11 is bent, and the environment such as temperature, humidity, and light in which the folding screen 11 is bent. Among them, the bending speed of the folding screen 11 and the environment in which the folding screen 11 is bent are the elements that must be matched with the actual use environment of the folding screen 11 in the performance and life test of the folding screen 11. In other words, by adjusting the bending speed of the folding screen 11 and the environment in which the folding screen 11 is bent, the scene of the folding screen 11 in actual use can be reproduced, and then combined with the number of times the folding screen 11 is bent, the test structure of the performance and life test of the folding screen 11 can be made more accurate.

[0093] The investigation and testing show that there are many scenarios where the time consumed by users to open or close the folding screen 11 at a time is 0.5S or even 0.2S, while the fastest time for the test equipment in the related art to complete the opening or closing is 1S. Once the opening and closing speed of the test equipment is too fast, the above-mentioned problems of overshoot of the swing arm 343 rotation angle and swaying of the swing arm 343 will occur. This shows that when users actually use the folding screen 11 product, they will open and close the folding screen 11 faster than the opening and closing speed of the test equipment in the related art. Therefore, it is necessary to set a faster opening and closing speed during the folding screen 11 testing phase to cover the actual user usage scenarios and ensure that the folding screen 11 product has higher reliability during use.

[0094] Figure 4 A schematic diagram of a test system 1000 provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the test system 1000 provided in the embodiment of the present application includes: an environmental chamber 100, an electric control device 200 ( Figure 4 The electric control device 200 is shown as an example of an electric control cabinet) and the folding screen test device 300 ( Figure 4 Not shown, see Figure 6 ).

[0095] Figure 5 This is a schematic diagram of the structure of an environmental chamber 100 provided in one embodiment of the present application. Figure 6 for Figure 5The cross-sectional structure diagram of the environmental chamber 100 along the section line AA. Figure 5 and Figure 6 As shown, the environmental chamber 100 has a receiving chamber 110, and the folding screen testing device 300 is configured in the environmental chamber 100. For example, Figure 6 As shown in , the folding screen test device 300 may have a support foot 310, and the folding screen test device 300 is fixed to the bottom wall of the accommodating chamber 110 by the support foot 310. Fixing the folding screen test device 300 in the accommodating chamber 110 can prevent the folding screen test device 300 from vibrating and shifting, and can also prevent the folding screen test device 300 from vibrating and colliding with the environmental chamber 100 to produce abnormal noise. Of course, the folding screen test device 300 can also be fixed in the accommodating chamber 110 through a series of existing fixing methods such as snapping, bonding, and welding. In addition, the folding screen test device 300 can also be fixed to the side wall or top wall of the accommodating chamber 110, as long as the folding screen test device 300 is set in the accommodating chamber 110 of the environmental chamber 100. Please refer to Figure 4 As shown, the environmental chamber 100 has a placement opening, and an opening and closing door 120 is provided at the placement opening. The opening and closing door 120 can be opened to install, adjust and replace parts of the folding screen testing device 300, and closing the opening and closing door 120 can ensure the environment to be maintained in the environmental chamber 100.

[0096] The environmental box 100 can adjust the environment in the accommodation chamber 110, for example, adjust the temperature, humidity, light (light intensity, light type, etc., where the light type includes incandescent light, infrared light, ultraviolet light, etc.), etc. Exemplarily, the environmental box 100 may include a heating device, a cooling device, a humidifying device, a dehumidifying device, an incandescent lamp with adjustable light intensity, an infrared lamp with adjustable light intensity, and an ultraviolet lamp with adjustable light intensity. The above devices can be configured in the accommodation chamber 110 or in the non-accommodation chamber 110 area of ​​the environmental box 100. Accordingly, the temperature in the accommodation chamber 110 can be adjusted by the heating device and the cooling device, the humidity in the accommodation chamber 110 can be adjusted by the humidifying device and the dehumidifying device, and the ambient light change in the accommodation chamber 110 can be achieved by switching on and off various lights and adjusting the light intensity. Therefore, the environmental box 100 can adjust the environment in the accommodating chamber 110 to reproduce various scenarios during the use of the folding screen 11, making the opening and closing test of the folding screen 11 by the folding screen testing device 300 more convincing and practical.

[0097] The electric control device 200 is electrically connected to the environmental chamber 100 and the folding screen test device 300, respectively. The electric control device 200 is used to control the environmental chamber 100 and the folding screen test device 300. For example, the electric control device 200 can control the start and stop of the environmental chamber 100 and the folding screen test device 300, can adjust the temperature, humidity and light of the environmental chamber 100, and can also adjust the speed of the driving device in the folding screen test device 300. In addition, the electric control device 200 can also be provided with a start and stop button, an adjustment button, etc., which are used to start and stop and adjust the environmental chamber 100 and the folding screen test device 300 to reduce the difficulty of operation. Terminal equipment, such as a computer, can also be set in the electric control device 200.

[0098] Figure 7 This is a schematic diagram of the structure of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Figure 7 As shown, the folding screen testing device 300 provided in the embodiment of the present application includes: a first base 320, an opening and closing mechanism 330, a driving motor 350 (refer to Figure 9a )、Screw 360 (reference Figure 9a ), transmission assembly 340 and fixing bracket 370.

[0099] Specifically, Figure 8 This is a partial structural diagram of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Figure 8 As shown, the opening and closing mechanism 330 is disposed on the first base 320 , and the first base 320 provides an installation position for the opening and closing mechanism 330 to ensure the stability of the opening and closing mechanism 330 during operation.

[0100] The opening and closing mechanism 330 includes: a first clamp 331 and a second clamp 332, wherein the first clamp 331 and the second clamp 332 are used to fix the target folding screen 11, wherein the target folding screen 11 refers to not only a single target folding screen 11, but also includes a foldable electronic device 10 carrying a target display screen. For example, the first display portion 11a of the folding screen 11 can be fixed to the first clamp 331, and the second display portion 11b of the folding screen 11 can be fixed to the second clamp 332, or the first main body portion 12 of the foldable electronic device 10 can be fixed to the first clamp 331, and the second main body portion 13 of the foldable electronic device 10 can be fixed to the first clamp 331. The opening and closing mechanism 330 can fix the folding screen 11 or the foldable electronic device 10 in a series of conventional fixing methods such as snap-on, fastener connection, bonding, and binding.

[0101] The second fixture 332 is rotatably arranged around the first fixture 331. It can be understood that there is a rotation axis (such as Figure 8The second clamp 332 can rotate around the first clamp 331 according to the rotation axis, so that the opening and closing mechanism can be switched between a fully unfolded state and a fully folded state.

[0102] The first clamp 331 and the second clamp 332 may be connected, for example, Figure 8 As shown in , one side of the first clamp 331 is connected to one side of the second clamp 332, and the connection method may be connected by a hinge, etc. The first clamp 331 and the second clamp 332 may also be unconnected, for example, there is a gap between the first clamp 331 and the second clamp 332, a rotating member may be set up in the gap, the second clamp 332 is connected to the rotating member, and the second clamp 332 is rotatably arranged around the first clamp 331 through the rotating member.

[0103] The second fixture 332 rotates around the rotation axis of the first fixture 331 (i.e. Figure 8 The dotted line B) is along the first direction. For the convenience of description, a three-dimensional coordinate system is established for the folding screen testing device 300, and the first direction is set as the X direction. This coordinate system is used in the drawings of this application.

[0104] In order to more clearly observe the structure of the folding screen test device 300, Figure 8 The folding screen test device 300 has a partially hidden structure. Figure 9a , Figure 9a This is a partial structural diagram of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Figure 9a Combined with Figure 8 In the folding screen testing device 300 provided in the embodiment of the present application, the driving motor 350 may adopt a high and low temperature servo motor, wherein the driving motor 350 is a rotary motor.

[0105] The lead screw comprises a nut and a screw rod. The nut is disposed on the screw rod and matches with the screw rod thread.

[0106] The screw rod of the lead screw 360 is connected to the output shaft of the drive motor 350. Figure 9a As shown, in the embodiment of the present application, the transmission assembly 340 is respectively connected to the nut of the lead screw 360 and the second clamp 332. When the output shaft of the driving motor rotates, the output shaft drives the lead screw 360 to work, wherein the screw rod of the lead screw 360 extends along the second direction, and the transmission assembly 340 is used to drive the second clamp 332 to rotate around the first clamp 331 after receiving the driving force of the lead screw 360.

[0107] Figure 9b This is a schematic diagram of the structure of the screw rod of the lead screw provided in one embodiment of the present application, with reference to Figure 9bAs shown, the screw has a threaded section 361, and both ends of the thread of the threaded section 361 have stoppers 362. When the opening and closing mechanism is in full expansion and full folding, the nut of the lead screw 360 is located at both ends of the thread of the threaded section 361 respectively.

[0108] In the three-dimensional coordinate system in the figure, the second direction is set as the Y direction, and the second direction is perpendicular to the first direction, that is, the Y direction is perpendicular to the X direction.

[0109] When the opening and closing mechanism is in the fully extended and fully folded state, the nut of the lead screw is located at the two end portions of the threaded segment 361, respectively. In some specific examples, the length of the thread on the threaded segment 361 of the lead screw 360 along the second direction is adapted to the rotation angle of the output shaft of the drive motor 350. "The length of the thread on the threaded segment 361 of the lead screw 360 along the second direction is adapted to the rotation angle of the output shaft of the drive motor 350" means that when the output shaft of the drive motor 350 rotates clockwise to the extended position and stops, the nut of the lead screw 360 just stops at one end portion of the thread of the screw of the lead screw 360, and when the output shaft of the drive motor 350 rotates counterclockwise to the folded position and stops, the nut of the lead screw 360 just stops at the other end portion of the thread of the screw of the lead screw 360. There are many ways to implement the stopper 362. For example, raised stoppers 362 may be provided at both ends of the thread of the threaded segment 361, and the raised stoppers 362 may have a stopping effect on the nut of the lead screw, thereby preventing the nut of the lead screw from being separated from the threaded segment 361. Alternatively, both ends of the thread of the threaded segment 361 of the lead screw may have non-threaded segments 361, which are arranged concentrically with the threaded segment 361, and the distance from the radial periphery of the non-threaded segment 361 to the axis is greater than the distance from the radial periphery of the threaded segment 361 to the axis.

[0110] In actual use, due to reasons such as component manufacturing tolerances and power debugging errors of the drive motor 350, it may happen that when the nut of the lead screw 360 reaches one end of the thread of the lead screw 360, the rotation speed of the output shaft of the drive motor 350 has not yet dropped to 0. Here, it should be mentioned that when the folding screen test device 300 is working, when the folding screen 11 is changed from the unfolded state to the folded state or from the folded state to the unfolded state, the last stage is the deceleration process of the drive motor 350, and the drive motor 350 needs to decelerate from the maximum operating speed to 0. When the nut of the lead screw 360 reaches one end of the thread of the lead screw 360, and the rotation speed of the output shaft of the drive motor 350 has not yet dropped to 0, the nut of the lead screw 360 will be driven to continue to move, and there is a problem of excessive rotation of the drive motor. Based on this, in the present application, when the drive motor drives the nut of the lead screw 360 to move to a fully unfolded state, one of the stoppers 362 is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the drive motor from excessively rotating, so as to facilitate the timely stopping of the drive motor. When the drive motor drives the nut of the lead screw 360 to move to a fully folded state, another stopper 362 is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the drive motor from excessively rotating, so as to facilitate the timely stopping of the drive motor. The threaded section 361 thus prevents the transmission assembly 340 from driving the second fixture 332 to rotate at an angle that is overshooting.

[0111] In some embodiments of the present application, the transmission assembly 340 may include: a rack 341, a gear 342, and a swing arm 343. The rack 341 is connected to the nut of the lead screw 360, and the nut of the lead screw 360 can drive the rack 341 to move back and forth in the second direction (Y direction). Figure 9a As shown in the figure, the rack 341 is connected to the nut of the lead screw 360 indirectly through an intermediate component, which will be described in detail below. In the embodiment of the present application, there is no restriction on the way the rack 341 is connected to the nut of the lead screw 360, as long as the lead screw 360 can drive the rack 341 to move back and forth in the second direction (Y direction). The third direction (Z direction) is perpendicular to the plane formed by the first direction (X direction) and the second direction (Y direction).

[0112] refer to Figure 9a Combined with Figure 8 As shown, the gear 342 and the rack 341 are matched without clearance, and "the gear 342 and the rack 341 are matched without clearance" here means that there is no clearance when the teeth of the gear 342 and the teeth of the rack 341 are meshed. The gear 342 is fixed on the fixing frame 370, and the fixing frame 370 is mounted on the first base 320. The gear 342 is fixed on the fixing frame 370. The gear 342 only rotates along its own rotation axis, and the rotation axis of the gear 342 extends along the first direction (X direction).

[0113] The swing arm 343 is connected to the rotating shaft of the gear 342 and the second clamp 332 respectively, and the gear 342 is used to drive the swing arm 343 to drive the second clamp 332 to rotate around the first clamp 331. When the driving motor 350 is in operation, the lead screw 360 drives the rack 341 to reciprocate in the second direction (Y direction), and the gear 342 is driven by the reciprocating motion of the rack 341 to rotate clockwise and counterclockwise correspondingly. The swing arm 343 drives the second clamp 332 to rotate around the first clamp 331 to open and close along with the clockwise and counterclockwise rotation of the gear 342.

[0114] It should be mentioned that one of the difficulties of the technical problem to be solved by the embodiment of the present application is that it is necessary to ensure that the folding screen test device 300 has a faster opening and closing test speed that matches the actual usage scenario of the folding screen 11, and to ensure that the folding screen test device 300 does not encounter any problems during operation.

[0115] Fig.10 This is a schematic diagram of the changes in the angle, speed, and acceleration of the drive motor during the opening and closing of the folding screen test device. Fig.10 As shown in , a is a curve diagram of the change of the rotation angle of the driving motor and time, b is a curve diagram of the change of the rotation speed of the driving motor and time, and c is a curve diagram of the change of the rotation acceleration of the driving motor and time. When the folding screen testing device 300 is working, the folding screen 11 changes from the unfolded state to the folded state or from the folded state to the unfolded state, and it will go through three processes. The first process is the motor acceleration process, and the motor needs to accelerate to the maximum operating speed. The second process is the motor uniform speed process, and the motor rotates at a uniform speed during this process. The third process is the motor deceleration process, and the motor needs to decelerate from the maximum operating speed to 0 and needs to stop smoothly. As shown in Fig.10 As shown in Figure ac, t3 is the total time from the folded state to the unfolded state or from the unfolded state to the folded state. During the time period 0-t1, the driving motor is accelerated at an acceleration of a m Accelerate to maximum speed v m , the rotation angle is d1. In the time period t1-t2, the driving motor has an acceleration of 0, rotates at a constant speed, and the rotation angle is d2-d1. In the time period t2-t3, the driving motor has an acceleration of -a m Decelerate to 0, the rotation angle is 180°-d2. The fast opening and closing test requires the motor to complete the above three processes in a shorter time, which means that the motor needs to reach a faster opening and closing speed than before in a shorter acceleration period, and reduce the speed from the maximum operating speed to 0 in a shorter deceleration period, while ensuring that the folding screen test device 300 stops smoothly without other problems.

[0116] It can be understood that in the folding screen test device 300 provided in the embodiment of the present application, the lead screw 360 is driven to rotate by a rotary motor, and the lead screw 360 drives the rack 341 to reciprocate in the second direction (Y direction). The gear 342 is driven by the reciprocating motion of the rack 341 to rotate clockwise and counterclockwise correspondingly, and the swing arm 343 drives the second fixture 332 to rotate around the first fixture 331 to open and close with the clockwise and counterclockwise rotation of the gear 342. On the one hand, the folding screen test device 300 provided in the embodiment of the present application replaces the manual opening and closing test with the automated opening and closing test, which can improve the test efficiency of the performance and life of the folding screen 11, saving time and effort.

[0117] On the second aspect, the folding screen testing device 300 provided by the embodiment of the present application has stoppers 362 at both ends of the threaded section 361 of the screw of the lead screw 360. When the drive motor 350 drives the nut of the lead screw 360 to move to a fully unfolded state, one of the stoppers 362 is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the drive motor 350 from excessively rotating, so as to facilitate the timely stopping of the drive motor. When the drive motor drives the nut of the lead screw 360 to move to a fully folded state, the other stopper 362 is used to cooperate with the nut to limit the nut from continuing to move in the current moving direction, thereby preventing the drive motor 350 from excessively rotating, so as to facilitate the timely stopping of the drive motor. Thereby, the stopper 362 can be prevented from occurring when the swing arm 343 rotates at an angle that is overshooting.

[0118] Thirdly, since the rack 341 and the gear 342 are matched without clearance, they have the advantage of high precision and can prevent the swing arm 343 connected to the gear 342 from swinging.

[0119] On the other hand, since the problems of overshoot of the rotation angle of the swing arm 343 and the swinging of the swing arm 343 are overcome, the drive motor 350 can operate at a faster speed, and a single opening and closing test can be completed in a faster time, meeting the reproduction of the opening and closing time scenario of the foldable electronic device 10 in actual use, making the test scenario of the folding screen testing device 300 more in line with the actual use scenario of the foldable electronic device 10.

[0120] In addition, in the embodiment of the present application, the driving motor 350 adopts a rotary motor rather than a telescopic motor, because the telescopic motor itself has the risk of telescopic overshoot.

[0121] The folding screen testing device 300 provided in the embodiment of the present application can realize the opening and closing test of the foldable electronic device 10 or the folding screen 11 in various forms (such as inward folding, outward folding, vertical folding, etc.), and quickly unfold the folding screen 11 or close the folding screen 11 within 200ms or even faster, and the swing arm 343 has no overshoot and obvious shaking.

[0122] Of course, the embodiments of the present application are not limited to this, and further reference is made to Figure 9a As shown, in some embodiments of the present application, the transmission assembly 340 is divided into two groups, and the two groups of transmission assemblies 340 are arranged oppositely in the first direction (X direction). In this case, the rotation axes of the two gears 342 in the two groups of transmission assemblies 340 are on the same straight line, that is, the line connecting the rotation axes of the two gears 342 extends along the first direction (X direction), and the two groups of transmission assemblies 340 are respectively located on both sides of the opening and closing mechanism 330. It is easy to understand that when there is only one group of transmission assemblies 340, the second clamp 332 and the swing arm 343 are prone to rotation and tilt during operation, resulting in uneven force at each point of the connection between the second clamp 332 and the first clamp 331 when the second clamp 332 rotates around the first clamp 331, causing damage to the opening and closing mechanism 330. When there are two groups of transmission assemblies 340, the above problems can be improved or solved. In the embodiments of the present application, the transmission assemblies 340 are described as two groups, but it does not exclude the situation that there are only one or more groups of transmission assemblies 340.

[0123] In some embodiments of the present application, when there are two (or more) transmission assemblies 340, there may be two (or more) corresponding screws 360 and drive motors 350, and the racks 341 in each transmission assembly 340 are respectively connected to the corresponding screws 360. In other embodiments of the present application, there is one drive motor 350 and one screw 360, and the racks 341 in the two transmission assemblies 340 are respectively connected to the screws 360. In this way, the two swing arms 343 driven by a single drive motor 350 can be synchronized, thereby ensuring the stability of the second fixture 332 when rotating around the first fixture 331.

[0124] Fig.11 This is a partial structural diagram of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Fig.11As shown, in some embodiments of the present application, two swing arms 343 respectively located in two groups of transmission components 340 can be connected to form a joint swing arm 343a, wherein the two ends of the second fixture 332 in the first direction are the first end and the second end, and the connection between the joint swing arm 343a and the second fixture 332 is located between the first end and the second end, and the distance from the connection to the first end is equal to the distance from the connection to the second end. When the two swing arms 343 are two independent parts, although the synchronous movement of the two swing arms 343 can be achieved, there are also cases of component manufacturing tolerances and component installation errors. Connecting the two swing arms 343 to form a joint swing arm 343a can further improve the synchronization of the two swing arms 343. Among them, the two swing arms 343 can be connected by a series of existing connection methods such as fastener connection, bonding, clamping, welding, etc., or they can be integrally formed to form an inseparable component. In addition, the connection between the combined swing arm 343a and the second clamp 332 is arranged on the central axis of the second clamp 332 in the first direction. In this way, when the second clamp 332 rotates around the first clamp 331, the forces at the connection points between the second clamp 332 and the first clamp 331 are uniformly applied, thereby ensuring the stability of the opening and closing mechanism 330 during operation and preventing the connection between the second clamp 332 and the first clamp 331 from breaking and being damaged.

[0125] In some embodiments of the present application, in order to achieve the connection between the combined swing arm 343a and the second fixture, the folding screen testing device 300 may also include a connecting piece 3321, one end of which is connected to the combined swing arm 343a, and the other end is connected to the second fixture 332.

[0126] In the folding screen test device 300 provided in the embodiment of the present application, the rotation axis of the second fixture 332 around the first fixture 331 and the rotation axis of the gear 342 may or may not be in a straight line. When the rotation axis of the opening and closing mechanism 330 and the rotation axis of the gear 342 are not in a straight line, during the operation of the folding screen test device 300, a relative displacement difference will appear between the swing arm 343 and the second fixture 332, and the displacement will continuously change with the rotation of the swing arm 343 and the second fixture 332. If the connecting member 3321 is rigidly connected to the second fixture 332 and the joint swing arm 343a, this will cause the second fixture 332 to generate a pulling force or squeezing force on the first fixture 331, thereby causing the opening and closing mechanism 330 to be damaged. For example, when the rotation axis of the gear 342 is closer to the connection between the combined swing arm 343a and the second clamp 332 than the rotation axis of the second clamp 332, if the connecting member 3321 is rigidly connected to the second clamp 332 and the combined swing arm 343a, the combined swing arm 343a will drive the second clamp 332 to generate a pulling force on the first clamp 331 through the connecting member 3321. When the rotation axis of the gear 342 is farther away from the connection between the combined swing arm 343a and the second clamp 332 than the rotation axis of the second clamp 332, if the connecting member 3321 is rigidly connected to the second clamp 332 and the combined swing arm 343a, the combined swing arm 343a will drive the second clamp 332 to generate a squeezing force on the first clamp 331 through the connecting member 3321.

[0127] To solve the above problems, refer to Fig.11 As shown, in some embodiments of the present application, the function of the connecting member 3321 is to allow the relative distance between the joint swing arm 343a and the second clamp 332 to change when the joint swing arm 343a drives the second clamp 332 to rotate around the first clamp 331.

[0128] There are many ways to set the connecting member 3321. For example, the connecting member 3321 can be a telescopic member. When the joint swing arm 343a drives the second clamp 332 to rotate around the first clamp 331, the relative distance between the joint swing arm 343a and the second clamp 332 is changed by its own telescopicity, thereby preventing the connecting member 3321 from driving the second clamp 332 to squeeze or pull the first clamp 331. For another example, the connecting member 3321 can be connected to the joint swing arm 343a and / or the second clamp 332 through an elastic member (such as a spring, etc.). When the joint swing arm 343a drives the second clamp 332 to rotate around the first clamp 331, the relative distance between the joint swing arm 343a and the second clamp 332 is changed by the telescopicity of the elastic member, thereby preventing the connecting member 3321 from driving the second clamp 332 to squeeze or pull the first clamp 331.

[0129] Continue to refer Fig.11As shown, in some embodiments of the present application, a setting mode of a connecting member 3321 is also provided, wherein one end of the connecting member 3321 is fixedly connected to the second clamp 332, and the other end of the connecting member 3321 is slidably connected to the combined swing arm 343a. Alternatively, in some other embodiments of the present application, one end of the connecting member 3321 is fixedly connected to the combined swing arm 343a, and the other end of the connecting member 3321 is slidably connected to the second clamp 332. Through the sliding connection between the connecting member 3321 and the combined swing arm 343a or the second clamp 332, the relative displacement difference between the swing arm 343 and the second clamp 332 during operation can be compensated, thereby ensuring the stability of the opening and closing of the opening and closing mechanism 330 and preventing the opening and closing mechanism 330 from being damaged.

[0130] Please continue to refer to Fig.11 As shown, in order to achieve the sliding connection between the connecting member 3321 and the combined swing arm 343a or the second clamp 332, in some embodiments of the present application, two parallel pulleys 3431 can be set on the second clamp 332 or the combined swing arm 343a. In the embodiment of the present application, two parallel pulleys 3431 are set on the combined swing arm 343a as an example for explanation. The non-fixed end of the connecting member 3321 is clamped between the two pulleys 3431, and the rotation axes of the two pulleys 3431 extend along the first direction (X direction). When the combined swing arm 343a drives the second clamp 332 to rotate, the sliding of the connecting member 3321 between the two parallel pulleys 3431 can achieve the purpose of changing the relative distance between the combined swing arm 343a and the second clamp 332. The sliding connection between the connecting member 3321 and the second clamp 332 or the combined swing arm 343a is simple and easy. In addition, compared to the method in which the connecting member 3321 itself is a telescopic member, the connecting member 3321 can also have the freedom of rotation relative to the target telescopic connected component (the second clamp 332 or the joint swing arm 343a) between the two pulleys 3431, thereby preventing the connecting member 3321 from being damaged by the bending force. Compared to the method in which the connecting member 3321 is connected to the joint swing arm 343a and / or the second clamp 332 through an elastic member, the elastic member will cause the joint swing arm 343a to drive the second clamp 332 to rotate with a lag, and the sliding connection method provided in the embodiment of the present application is more conducive to the joint swing arm 343a driving the second clamp 332 to rotate.

[0131] Fig.12 This is a partial structural diagram of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Fig.12As shown, in some embodiments of the present application, in order to make the opening and closing test adapt to folding screens 11 or foldable electronic devices 10 of different thicknesses, the folding screen testing device 300 may also include a lifting platform 380, and the lifting platform 380 is arranged on the first base 320, and the opening and closing mechanism 330 is connected to the lifting platform 380. For example, two parallel slide rails 384 can be arranged on the lifting platform 380, and the two ends of the opening and closing mechanism 330 in the first direction can be detachably locked in the slide rails 384, and the opening and closing mechanism 330 can slide and lock in the slide rails 384, so as to facilitate the opening and closing mechanism 330 to adjust its position.

[0132] The lifting platform 380 can be adjusted relative to the first base 320. After the folding screen test device 300 is adjusted to fit a folding screen 11 or foldable electronic device 10 of a certain thickness, considering the test effect of the folding screen test device 300, the distance between the rotation axis of the swing arm 343 and the rotation axis of the target folding screen is a fixed value. When the target folding screen 11 or foldable electronic device 10 needs to change its thickness, the adjustable lifting platform 380 drives the opening and closing mechanism 330 to compensate. Fig.11 Taking the folding screen testing device 300 as an example, when the thickness of the target folding screen 11 or the foldable electronic device 10 increases, the height of the lifting platform 380 relative to the first base 320 can be lowered; when the thickness of the target folding screen 11 or the foldable electronic device 10 decreases, the height of the lifting platform 380 relative to the first base 320 can be raised.

[0133] There are many ways to adjust the lifting platform 380 relative to the first base 320, for example, Fig.12 As shown in , the folding screen testing device 300 may also include: a height adjustment module, the height adjustment module includes: an external threaded rod 381 and a rotating ring, one end of the external threaded rod 381 is rotatably connected to the bottom of the lifting platform 380. For example, a bearing may be provided at the bottom of the lifting platform 380, and the external threaded rod 381 cooperates with the bearing to realize the rotatable connection between the external threaded rod 381 and the bottom of the lifting platform 380. For another example, a cylindrical hole or a sleeve may be provided at the bottom of the lifting platform 380, and one end of the external threaded rod 381 cooperates with the cylindrical hole or the sleeve to realize the rotatable connection between the external threaded rod 381 and the lifting platform 380. The external threaded rod 381 has an external thread, and an internal threaded hole ( Fig.12 (not shown), the external thread of the external threaded rod 381 cooperates with the internal threaded hole of the first base 320, and a rotating ring 382 is sleeved on the external thread 381 and fixedly connected. The rotating ring 382 can be rotated to realize the lifting and lowering adjustment of the lifting platform 380 relative to the first base 320.

[0134] In addition, a scale member may be provided on the first base 320 to indicate the lifting height of the lifting platform 380, so as to intuitively observe the specific lifting height of the lifting platform 380. For example, Fig.12 As shown in the figure, a scale 383 extending toward the first base 320 can be set on the lifting platform 380, and a pointer 322 can be set on the first base 320 corresponding to the scale 383. The scale change difference indicated by the pointer 322 on the scale 383 is the lifting height of the lifting platform 380 relative to the first base 320.

[0135] Continue to refer Fig.12 As shown, in some embodiments of the present application, the folding screen testing device 300 may further include a second base 390 and a support frame 391. Specifically, the second base 390 and the first base 320 are arranged in an interval and stacked manner, so that the second base 390 does not interfere with the first base 320 when it moves relative to the first base 320. The second base 390 is arranged on the side of the first base 320 away from the closing mechanism 330. The second base 390 is connected to the nut of the lead screw 360, and the lead screw 360 can drive the second base 390 to move back and forth in the second direction (Y direction). The support frame 391 is fixed to the second base 390, and the first base 320 is provided with an avoidance opening 321, and the support member is passed through the avoidance opening 321. The rack 341 is fixed to the end of the support member away from the second base 390.

[0136] It is understandable that the second base 390 and the support frame 391 are arranged in this way to reasonably utilize space and reduce the volume of the folding screen testing device 300. The support frame 391 passes through the avoidance opening 321 to fix the rack 341, which can facilitate the connection between the rack 341 and the lead screw 360 on the one hand, and on the other hand, it can make the rack 341 closer to the opening and closing mechanism 330, which is conducive to reducing the length of the swing arm 343 and saving materials.

[0137] refer to Fig.12 Combined with Figure 7 As shown, in some embodiments of the present application, the folding screen testing device 300 may further include a shielding housing 392, wherein the driving motor 350 ( Fig.12The shielding shell 392 and the first base 320 form a box to enclose the drive motor 350, the lead screw 360 and the second base 390. The box structure formed by the shielding shell 392 and the first base 320 can shield the components below the first base 320 to improve the appearance. It can also prevent the components below the first base 320 (such as the lead screw 360 and the drive motor 350) from contacting external foreign objects and causing jams. It can also prevent the test operator from touching the lead screw 360 and the drive motor 350, ensuring the personal safety of the test operator. In addition, the box structure formed by the shielding shell 392 and the first base 320 can also reduce the noise of the drive motor 350.

[0138] Similarly, reference Figure 8 As shown, in some embodiments of the present application, the fixing frame 370 can also be set as a box structure, and is covered on the outside of part of the support frame 391, the rack 341 and the gear 342. The fixing frame 370 of the box structure can shield the support frame 391, the rack 341 and the gear 342 to improve the appearance. It can also prevent the rack 341 and the gear 342 from contacting with external foreign objects and causing jamming. In addition, it can also prevent the test operator from touching the gear 342 and the gear teeth to ensure the personal safety of the test operator.

[0139] Fig.13 This is a partial structural diagram of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Fig.13As shown, in some embodiments of the present application, in order to perform visual defect detection on the target folding screen 11 for testing, the folding screen testing device 300 may also include a first camera 393 and a second camera 394. In this embodiment, the first fixture 331 has two sides, which are a first side and a second side opposite to the first side. The upward side of the first fixture 331 is defined as the first side, and the downward side of the first fixture 331 is defined as the second side. The first camera 393 and the second camera 394 are respectively arranged on the first side of the first fixture 331 and the second side of the first fixture 331. The first camera 393 and the second camera 394 can be electrically connected to the electronic control device 200, and can also be electrically connected to an external terminal device. The first camera 393 and the second camera 394 can perform visual defect detection on the inward foldable electronic device 10 and the outward foldable electronic device 10, respectively. For example, when the foldable electronic device 10 is an inward-folding electronic device, the folding screen 11 of the foldable electronic device 10 can be fixed upward on the first surface of the opening and closing mechanism 330, and the first camera 393 can perform visual defect detection on the inward-folding foldable electronic device 10. When the foldable electronic device 10 is an outward-folding electronic device, the folding screen 11 of the foldable electronic device 10 can be fixed downward on the first surface of the opening and closing mechanism 330, and the second camera 394 can perform visual defect detection on the outward-folding foldable electronic device 10. In this case, the movable clamp and the first clamp 331 need to be set to a light-transmitting structure so that the second camera 394 can shoot or take pictures of the folding screen 11 located on the first surface of the opening and closing mechanism 330.

[0140] Continue to refer Fig.13 As shown, in some embodiments of the present application, the folding screen testing device 300 may further include: a lifting member 396, a first bracket 397 and a second bracket 398. Specifically, the bottom of the lifting member 396 is fixed to the plane where the first base 320 is located. For example, Fig.13 As shown, the lifting member 396 is fixed to the upper surface of the shielding outer shell 392, and the upper surface of the shielding outer shell 392 is on the plane where the first base 320 is located. Of course, the lifting member 396 can also be directly fixed to the first base.

[0141] The lifting member 396 is provided with a slideway 3961 perpendicular to the plane where the first base is located, and the first bracket 397 and the second bracket 398 are both slidably arranged in the slideway 3961. Among them, one end of the first bracket 397 and the second bracket 398 are respectively connected to the slideway 3961, and the other ends of the first bracket 397 and the second bracket 398 extend toward the opening and closing mechanism 330 respectively. The first camera 393 is arranged at one end of the first bracket 397 away from the lifting member. The second camera 394 is arranged at one end of the second bracket 398 away from the lifting member. The first camera 393 can slide on the slideway 3961 of the lifting member 396 through the first bracket 397 to achieve the first camera 393 to adjust the height of the opening and closing mechanism 330, and the second camera 394 can slide on the slideway 3961 of the lifting member 396 through the second bracket 398 to achieve the second camera 394 to adjust the height of the opening and closing mechanism 330. This makes it easier to adjust the distance between the first camera 393 and the second camera 394 and the opening and closing mechanism 330 , which helps the first camera 393 and the second camera 394 to obtain the best image information of the test piece.

[0142] Among them, in some embodiments of the present application, the optical axes of the first camera 393 and the second camera 394 can be set to be perpendicular to the plane where the opening and closing mechanism 330 is in the flattened state, and the lenses of the first camera 393 and the second camera 394 point to the side of the second fixture 332 close to the first fixture 331. In this way, the images of the first camera 393 and the second camera 394 can better cover the folding screen to be tested, ensuring the reliability of the first camera 393 and the second camera 394 for visual defect detection of the target test piece.

[0143] Fig.14 This is a schematic diagram of the structure of a folding screen testing device 300 provided in an embodiment of the present application, with reference to Fig.14 Combined with Fig.12 As shown, in some embodiments of the present application, when the opening and closing mechanism 330 is in the flattened state, the opening and closing mechanism 330 and the plane formed by the first direction and the second direction are arranged at an angle α, and the angle between the opening and closing mechanism 330 and the plane formed by the first direction and the second direction is between 15° and 25°. Fig.12 As shown in , in one embodiment of the present application, the lifting platform 380 of the fixed opening and closing mechanism 330 can be set to be inclined at an angle α with respect to the plane formed by the first direction and the second direction, and the opening and closing mechanism 330 is parallel to the lifting platform 380, wherein the plane formed by the first direction and the second direction is parallel to the plane where the first base 320 is located, and it can be understood that the plane formed by the first direction and the second direction is Fig.14 The horizontal plane in .

[0144] Before the folding screen test device 300 works, the target folding screen or target foldable electronic device needs to be fixed in the accommodating cavity 110 of the environmental chamber 100. The opening and closing mechanism 330, which is inclined at a certain angle to the plane where the first base 320 is located, can facilitate the fixation of the target folding screen or target foldable electronic device. When the inclination angle of the opening and closing mechanism 330 is too large, on the one hand, it is not conducive to the fixation of the target test piece, and on the other hand, it will also increase the height of the folding screen test device 300 and increase the space occupied by the folding screen test device 300 in the environmental chamber 100. Therefore, the inclination angle between the opening and closing mechanism 330 and the plane where the first base 320 is located should not be too large.

[0145] A second camera 394 is arranged below the opening and closing mechanism 330, and the optical axis of the second camera 394 is perpendicular to the plane where the opening and closing mechanism 330 is located when it is in a flattened state, and the optical axis of the second camera 394 passes through the second fixture 332 around the axis of rotation of the first fixture 331. Because the distance between the second camera 394 and the opening and closing mechanism 330 must be guaranteed to ensure the imaging quality. If the inclination angle of the opening and closing mechanism 330 is reduced, the height of the opening and closing mechanism 330 from the second camera 394 will increase, so as to ensure the appropriate distance between the second camera 394 and the opening and closing mechanism 330. When the inclination angle of the opening and closing mechanism 330 is too small, the height of the folding screen test device 300 will also increase, thereby increasing the occupied space of the folding screen test device 300 in the environmental chamber 100. Therefore, the inclination angle of the plane where the opening and closing mechanism 330 and the first base 320 are located should not be too small.

[0146] In the above case, the angle between the opening and closing mechanism 330 and the plane formed by the first direction and the second direction is set to be between 15°-25°, which can achieve the convenience of assembling the target test piece on the opening and closing mechanism 330 and the feasibility of the minimum height that the folding screen testing device 300 can achieve.

[0147] In actual use, the outward foldable electronic device 10 generally has a lock screen key 15 (such as Fig.15 The lock screen key 15 is used to lock the folding screen 11 when the foldable electronic device 10 is fully folded, so as to prevent the folding screen 11 from popping out. In order to prevent the folding screen 11 of the foldable electronic device 10 from being locked by the lock screen key 15 when the opening and closing mechanism 330 is folded, refer to Fig.11As shown, in some embodiments of the present application, the folding screen testing device 300 may further include a press key 395, which is used to press the lock screen key 15 of the foldable electronic device 10 to prevent the foldable electronic device 10 from being locked by the lock screen key 15 when the opening and closing mechanism 330 is folded. The press key 395 may be arranged on the opening and closing mechanism 330, or on the lifting platform 380, or on the surrounding parts of the opening and closing mechanism 330. The present application does not limit the setting position of the press key 395, and it is only necessary that the press key 395 can press the lock screen key 15 of the foldable electronic device 10. Fig.11 In the description, only the example of setting the push button 395 on the lifting platform 380 is used for explanation.

[0148] It should be noted that, in some embodiments of the present application, the folding screen test device 300 may further include a torque sensor (not shown in the drawings of the present application), which is disposed at the connection between the swing arm 343 and the gear 342, and is used to monitor the torque value at the connection between the swing arm 343 and the gear 342. When the torque sensor is too large, the folding screen test device 300 needs to be debugged to ensure the stable operation of the folding screen test device 300.

[0149] In one embodiment of the present application, in order to make the folding screen test device 300 meet the minimum specification standard and reduce the volume. Through actual calculation and practice, the length of the swing arm 343 can be set to 193mm (the distance between the free end of the swing arm 343 and the rotating axis of the gear 342), the pitch circle diameter of the gear 342 can be set to 50.9mm, the pitch of the rack 341 can be set to 16mm, the diameter of the lead screw 360 can be set to 25mm, the lead of the lead screw 360 can be set to 25mm, the torque of the drive motor 350 can be set to 1.5N·m, and the rated speed of the drive motor 350 can be set to 3000r / min. In this embodiment, the drive motor 350 drives the rack 341 through the lead screw 360 to move at a thrust of 251N and a speed of 400mm / s, and the gear 342 meshing with the rack 341 rotates at an angular velocity of 900° / s. The swing arm 343 can realize 180° opening of the folding screen 11 in 0.2s. Under this specification, the folding screen testing device 300 can also have an additional 2.5 times safety factor, and the driving motor 350 can not exceed 80% of the rated speed when working.

[0150] The following is a brief introduction to the working process of the folding screen test device 300. First, adjust the opening and closing mechanism 330, fix half of the target folding screen 11 to the first fixture 331, and the other half to the second fixture 332. At this time, the opening and closing mechanism 330 is in the unfolded state. After setting the parameters such as the opening and closing speed, ambient temperature and humidity, light, and opening and closing times of the folding screen test device 300, start the test. The electronic control device 200 is configured to control the first camera 393 and the second camera 394 to simultaneously collect image information of the target folding screen placed on the opening and closing mechanism 330. The electronic control device 200 determines the type of the target folding screen based on the image information of the first camera 393 and the second camera 394, and the software algorithm determines whether it is an inward-folding foldable electronic device 10 or an outward-folding foldable electronic device 10. If it is an inward foldable electronic device 10, the electronic control device 200 controls the first camera 393 and the drive motor 350 to work, and the electronic control device 200 controls the second camera 394 to stop working. If it is an outward foldable electronic device 10, the electronic control device 200 controls the second camera 394 and the drive motor 350 to work, and the electronic control device 200 controls the first camera 393 to stop working. Then the high and low temperature servo drive motor 350 drives the lead screw 360 to rotate clockwise and counterclockwise, driving the rack 341 to make a reciprocating motion in the second direction, and then the swing arm 343 drives the second clamp 332 together with the folding screen 11 to make a rapid opening and closing motion with the gear 342. Every time the folding screen 11 is unfolded, the first camera 393 or the second camera 394 will capture the screen situation, and the visual defect detection algorithm determines whether the current screen is invalid based on the pictures captured by the first camera 393 or the second camera 394.

[0151] Fig.16 The opening and closing test flow chart provided in an embodiment of the present application is as follows Fig.16 As shown, the opening and closing test provided in the embodiment of the present application can be summarized into the following process:

[0152] S101, start the folding screen testing device 300.

[0153] S102. Input one or more groups of opening and closing speeds, ambient temperature and humidity, and opening and closing times.

[0154] S103 , the first camera 393 and the second camera 394 shoot simultaneously, and determine the type of the sample to be tested through a visual algorithm.

[0155] S104. The folding screen testing device 300 preferentially reads the ambient temperature and humidity of the first group of inputs.

[0156] S105 , start the environmental box 100 and adjust the test environment so that the temperature and humidity reach the input parameter values.

[0157] S106, reading the opening and closing speed.

[0158] S107, opening and closing speed +1, the default initial opening and closing speed is 0.

[0159] S108, starting the driving motor 350, and performing a rapid opening and closing movement according to the read opening and closing speed.

[0160] S109. Each time the foldable electronic device 10 is opened, closed, or unfolded, the first camera 393 or the second camera 394 captures the entire screen of the foldable screen 11 and saves the image.

[0161] S110, starting a visual defect detection algorithm to recognize images.

[0162] S111. Determine whether the screen is invalid based on the image recognition result. If it is invalid, record the historical and current opening and closing speeds, ambient temperature and humidity, and opening and closing times, and end the test. If the screen is not invalid, continue to determine.

[0163] S112, judging whether the non-invalid screen meets the set opening and closing times, if not, returning to step S107, if satisfied, continuing to judge.

[0164] S113, determine whether there are other opening and closing speeds in the current ambient temperature and humidity. If so, return to step S106; if not, continue to determine.

[0165] S114, determine whether there is the next environmental temperature and humidity, if yes, return to step S105, if not, record the historical opening and closing speed, environmental temperature and humidity and opening and closing times, and end the test.

[0166] In the embodiments of the present application, the terms "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0167] In the description of the embodiments of the present application, the term "at least one" refers to one or more, and "plurality" refers to two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, and c can represent a, b, c, a and b, a and c, b and c, a and b and c, where a, b, and c can be single or multiple.

[0168] In the description of the embodiments of the present application, "parallel", "perpendicular", "equal", and "coplanar" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement being discussed and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within ±10° or ±5°. "Perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may be, for example, a deviation within ±10° or ±5°; "equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one of them. For example, the angle between two components of 180° includes the absolute 180° and the approximate 180°, wherein the acceptable deviation range of the approximate 180° may be, for example, a deviation within ±10° or ±5°; for example, the angle between two components of 0° includes the absolute 0° and the approximate 0°, wherein the acceptable deviation range of the approximate 0° may be, for example, a deviation within ±10° or ±5°. For example, the angle between two components of 90° includes the absolute 90° and the approximate 90°, wherein the acceptable deviation range of the approximate 90° may be, for example, a deviation within ±10° or ±5°.

[0169] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0170] The directional terms mentioned in the embodiments of the present application, such as "inside", "outside", etc., are only referenced to the directions of the drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, unless otherwise specified in the present application, "multiple" in the present application refers to two or more.

[0171] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0172] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0173] The terms "first", "second", "third", "fourth", etc. (if any) in the claims, description and drawings of the embodiments of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0174] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0175] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A folding screen testing device, characterized in that: include: A first base, an opening and closing mechanism, a drive motor, a lead screw and a transmission assembly; The opening and closing mechanism is arranged on the first base, and the opening and closing mechanism comprises: a first clamp and a second clamp, the first clamp and the second clamp are used to fix the target folding screen, the second clamp is arranged to rotate around the first clamp, and the rotation axis of the second clamp rotating around the first clamp is along the first direction; The screw of the lead screw is connected to the output shaft of the drive motor, the screw of the lead screw extends along the second direction, the transmission assembly is respectively connected to the nut of the lead screw and the second clamp, the transmission assembly is used to drive the second clamp to rotate around the first clamp after receiving the driving force of the lead screw, and the second direction is perpendicular to the first direction; The screw rod of the lead screw has a threaded section, and both ends of the threaded section have stoppers. When the opening and closing mechanism is in an unfolded state and a folded state, the nut of the lead screw is respectively located at both ends of the threaded section.

2. The folding screen testing device according to claim 1, characterized in that: Also includes: A fixing frame mounted on the first base; The transmission assembly includes: a rack, a gear and a swing arm, the rack is connected to the nut of the lead screw, the nut of the lead screw is used to drive the rack to move back and forth in the second direction, the gear and the rack are matched without clearance, the gear is fixed to the fixed frame, the rotating shaft of the gear extends along the first direction, the swing arm is respectively connected to the rotating shaft of the gear and the second clamp, and the gear is used to drive the swing arm to rotate to drive the second clamp to rotate around the first clamp.

3. The folding screen testing device according to claim 2, characterized in that: There are two groups of transmission components, which are arranged opposite to each other in the first direction and are respectively located on two sides of the opening and closing mechanism.

4. The folding screen testing device according to claim 3, characterized in that: The driving motor and the lead screw are both one, and the racks in the two groups of transmission components are respectively connected to the lead screw.

5. The folding screen testing device according to claim 3, characterized in that: The two swing arms respectively located in the two groups of the transmission components are connected to form a combined swing arm, and the two ends of the second clamp in the first direction are the first end and the second end. The connection between the combined swing arm and the second clamp is located between the first end and the second end, and the distance from the connection between the combined swing arm and the second clamp to the first end is equal to the distance from the connection between the combined swing arm and the second clamp to the second end.

6. The folding screen testing device according to claim 5, characterized in that: Also includes: Connectors; One end of the connecting member is connected to the combined swing arm, and the other end of the connecting member is connected to the second clamp; When the rotation axis of the second clamp around the first clamp is not in the same straight line as the rotation axis of the gear, the connecting member is used to allow the relative distance between the combined swing arm and the second clamp to change when the combined swing arm drives the second clamp to rotate around the first clamp.

7. The folding screen testing device according to claim 6, characterized in that: One end of the connecting member is fixedly connected to one of the second clamp and the combined swing arm, and the other end of the connecting member is slidably connected to the other of the second clamp and the combined swing arm.

8. The folding screen testing device according to claim 7, characterized in that: The second clamp or the combined swing arm has two pulleys arranged in parallel, the rotation axes of the pulleys extend along the first direction, and the non-fixed end of the connecting member is clamped between the two pulleys.

9. The folding screen testing device according to any one of claims 2 to 8, characterized in that: Also includes: Lifting platform; The lifting platform is arranged on the first base, the opening and closing mechanism is connected to the lifting platform, and the lifting platform can be raised and lowered relative to the first base.

10. The folding screen testing device according to claim 9, characterized in that: Also includes: Height adjustment module; The height adjustment module includes: an externally threaded rod and a rotating ring, one end of the externally threaded rod is rotatably connected to the bottom of the lifting platform, an internally threaded hole is opened on the first base, the other end of the externally threaded rod is matched and connected to the internally threaded hole, and the rotating ring is sleeved on the externally threaded rod and fixedly connected.

11. The folding screen testing device according to claim 10, characterized in that: A scale is provided on the first base, and the scale is used to indicate the lifting height of the lifting platform.

12. The folding screen testing device according to any one of claims 2 to 11, characterized in that: Also includes a second base and a support frame; The second base is stacked with the first base at an interval, the second base is located on a side of the first base away from the opening and closing mechanism, the second base is connected to the nut of the lead screw, and the nut of the lead screw is used to drive the second base to move back and forth along the second direction; The support frame is fixed to the second base, a clearance opening is opened on the first base, the support frame is passed through the clearance opening, and the rack is fixed to an end of the support frame away from the second base.

13. The folding screen testing device according to claim 12, characterized in that: Also included: a shielding housing; The driving motor and the lead screw are arranged between the first base and the second base, and the shielding shell and the first base form a box body to enclose the driving motor, the lead screw and the second base.

14. The folding screen testing device according to claim 12 or 13, characterized in that: The fixing frame is a box structure, and the fixing frame cover is arranged outside a part of the supporting frame, the rack and the gear.

15. The folding screen testing device according to any one of claims 2 to 14, characterized in that: Also includes: a first camera and a second camera; The second fixture and the first fixture are both light-transmitting structures; The first fixture has a first surface and a second surface opposite to the first surface. The first camera and the second camera are respectively disposed on the first surface side of the first fixture and the second surface side of the first fixture.

16. The folding screen testing device according to claim 15, characterized in that: Also includes: A lifting member, a first bracket and a second bracket; The bottom of the lifting member is fixed to the plane where the first base is located, and a slideway perpendicular to the plane where the first base is located is provided on the lifting member, and the first bracket and the second bracket are both slidably arranged in the slideway; One end of the first bracket and the second bracket are respectively connected to the slide, and the other ends of the first bracket and the second bracket extend toward the opening and closing mechanism respectively. The first camera is fixed to one end of the first bracket away from the lifting member, and the second camera is fixed to one end of the second bracket away from the lifting member.

17. The folding screen testing device according to claim 15 or 16, characterized in that: The optical axes of the first camera and the second camera are perpendicular to the plane where the opening and closing mechanism is in a flattened state, and the lenses of the first camera and the second camera point to a side of the second fixture close to the first fixture.

18. The folding screen testing device according to any one of claims 15 to 17, characterized in that: When the opening and closing mechanism is in a flattened state, the opening and closing mechanism is arranged at an angle with a plane formed by the first direction and the second direction, and the angle between the opening and closing mechanism and the plane formed by the first direction and the second direction is between 15° and 25°; A plane formed by the first direction and the second direction is parallel to a plane where the first base is located.

19. The folding screen testing device according to any one of claims 2 to 18, characterized in that: Also includes: A pressing member, wherein the pressing member is used to press a lock screen key of a foldable electronic device.

20. The folding screen testing device according to any one of claims 2 to 19, characterized in that: A torque sensor is provided at the connection between the swing arm and the gear, and the torque sensor is used to monitor the torque value at the connection between the swing arm and the gear.

21. A testing system, characterized in that: include: An environmental chamber, an electric control device, and a folding screen testing device as described in any one of claims 1 to 20; The electronic control device is electrically connected to the environmental chamber and the folding screen testing device respectively. The environmental chamber has a containing cavity. The environmental chamber is used to adjust the environment in the containing cavity. The folding screen testing device is arranged in the environmental chamber.

22. The test system according to claim 21, characterized in that: In the case where the folding screen test device includes a first camera and a second camera, the electronic control device is configured to control the first camera and the second camera to simultaneously collect image information of a target folding screen placed on the opening and closing mechanism, and the electronic control device determines the type of the target folding screen according to the image information of the first camera and the second camera; If it is determined that the target folding screen is an inward folding screen, the electronic control device controls the first camera and the driving motor to operate, and the second camera stops operating; If it is determined that the target folding screen is an outward folding screen, the electronic control device controls the second camera and the driving motor to operate, and the first camera stops operating.

Images