Folding screen testing device and testing system

Abstract

The embodiment of the application provides a folding screen testing device and a testing system, wherein 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 rotationally arranged around the first clamp, the rotation axis of the second clamp rotating around the first clamp is along a first direction, the screw rod of the lead screw is connected with the output rotating shaft of the driving motor, the screw rod of the lead screw extends along a second direction, the transmission assembly is connected with the nut of the lead screw and the second clamp respectively, the transmission assembly is used for driving the second clamp to rotate around the first clamp after being driven by the driving force of the lead screw, the screw rod of the lead screw has a threaded section, the two end portions of the threaded section are provided with stop pieces, and when the opening and closing mechanism is in an unfolded state and a folded state, the nut of the lead screw is located at the two end portions of the threaded section respectively. The folding screen testing device and the testing system provided by the embodiment of the application are high in testing efficiency and save time and labor.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of test of electronic devices, and in particular to a folding screen test device and test system. BACKGROUND

[0002] With the gradual development of flexible screen technology, foldable electronic devices have emerged. Foldable electronic devices have become a hot technology today because they have a 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 conveniently 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 service life of the flexible folding screen of the foldable electronic device, the flexible folding screen or the foldable electronic device often needs to be repeatedly folded and unfolded (i.e., opened and closed). Generally, the flexible folding screen or the foldable electronic device can be manually opened and closed by artificial manual operation for testing. However, this manual opening and closing method is inefficient and time-consuming and laborious. SUMMARY

[0004] Embodiments of the present application provide a folding screen test device and test system, which can at least solve the problem of low opening and closing test efficiency, time-consuming and laborious in related technologies.

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

[0006] In a first aspect, the embodiments of the present application provide a folding screen test device, which 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 first clamp and the second clamp are used to fix a target folding screen. The second clamp is arranged to rotate around the first clamp. The rotation axis of the second clamp rotating around the first clamp is along a first direction. The screw rod of the lead screw is connected with the output shaft of the driving motor. The screw rod of the lead screw extends along a second direction. The transmission assembly is connected with the nut of the lead screw and the second clamp, respectively. The transmission assembly is used to drive the second clamp to rotate around the first clamp after being driven by the driving force of the lead screw. The second direction is perpendicular to the first direction. The screw rod of the lead screw has a threaded segment. Both ends of the threaded segment have stoppers. When the opening and closing mechanism is in an unfolded state and a folded state, the nut of the lead screw is located at both ends of the threaded segment, respectively.

[0007] The folding screen test device provided by the embodiment of the present application can prevent the over-rotation of the driving motor, so that the driving motor can be stopped in time. When the driving motor drives the screw nut of the lead screw to move to the fully folded state, the other stopper is used to cooperate with the screw nut to limit the screw nut from moving in the current moving direction, so that the over-rotation of the driving motor can be prevented, and the over-rotation of the transmission assembly can be prevented, the first aspect, the folding screen test device provided by the embodiment of the present application replaces the manual opening and closing test with the automatic opening and closing test, and the test efficiency of the folding screen performance and service life can be improved, time and labor are saved. The second aspect, the folding screen test device provided by the embodiment of the present application can prevent the over-rotation of the transmission assembly. In another aspect, since the problem of the over-rotation of the swing arm is overcome, the driving device can rotate at a faster speed, the single opening and closing test can be completed in a shorter time, the opening and closing time scene in the actual use of the foldable electronic device is reproduced, and the test scene of the folding screen test device is more consistent with the actual use scene of the foldable electronic device.

[0008] In a possible implementation, the folding screen test further includes a fixed frame arranged on the first base, the transmission assembly includes a rack, a gear and a swing arm, the rack is connected with the screw nut of the lead screw, the screw nut of the lead screw is used to drive the rack to move back and forth in the second direction, the gear is connected with the rack without clearance, the gear is fixed on the fixed frame, the rotation axis of the gear extends along the first direction, the swing arm is connected with the rotation axis of the gear and the second clamp respectively, 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 connected without clearance, the swing arm 343 connected with the gear can be prevented from swinging and shaking.

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

[0011] In this way, the second clamp and the swing arm can be prevented from rotating and tilting when working.

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

[0013] The two swing arms driven by the single driving motor can have synchronization, so as to ensure the stability of the second clamp when rotating around the first clamp.

[0014] In a possible implementation, the two swing arms in the two groups of transmission assemblies are connected to form a joint swing arm, the second clamp has a first end and a second end at two ends in the first direction, the joint swing arm is connected to the second clamp between the first end and the second end, and the distance from the joint swing arm to the first end is equal to the distance from the joint swing arm 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 still cases of part manufacturing tolerance and part installation error. Connecting the two swing arms to form a joint swing arm can further improve the synchronization of the two swing arms. In addition, the connection position of the joint swing arm to the second clamp is arranged on the central axis of the second clamp in the first direction. In this way, during the rotation of the second clamp around the first clamp, the forces on each point of the connection position of the second clamp to the first clamp are uniform, ensuring the stability of the opening and closing mechanism during operation and preventing the connection position of the second clamp to the first clamp from being damaged.

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

[0017] The connecting piece can compensate for the relative displacement difference between the swing arm and the second clamp during operation, ensure the stability of the opening and closing mechanism, and prevent the opening and closing mechanism from being damaged.

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

[0019] In a possible implementation, the second clamp or the joint 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 piece is clamped between the two pulleys.

[0020] The telescopic connection between the connecting piece and the second clamp or the joint swing arm is simple and easy to implement. Compared with the telescopic connecting piece itself, the connecting piece has a rotation degree of freedom relative to the target telescopic connecting part (the second clamp or the joint swing arm), preventing the connecting piece from being damaged by bending force.

[0021] In a possible implementation, the folding screen testing device further includes a 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 adjusted in lifting 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 comprises a height adjustment module, the height adjustment module comprising an outer threaded rod and a rotating ring, one end of the outer threaded rod being rotatably connected to the bottom of the lifting platform, an inner threaded hole being formed in the first base, the other end of the outer threaded rod being connected to the inner threaded hole in a matched manner, and the rotating ring being sleeved on the outer threaded rod and fixedly connected thereto. The height adjustment module can be used to adjust the lifting platform, and the adjustment is simple and easy to implement.

[0024] In a possible implementation, a scale member is arranged on the first base, and the scale member is used to indicate the lifting height of the lifting platform. In this way, the specific lifting height of the lifting platform can be intuitively observed.

[0025] In a possible implementation, the folding screen test device further comprises a second base and a support frame, the second base being arranged in a stacked manner with the first base and located on the side of the first base away from the opening and closing mechanism, the second base being connected to the nut of the lead screw, the nut of the lead screw being used to drive the second base to move back and forth in the second direction, the support frame being fixed to the second base, an avoiding opening being formed in the first base, the support frame being arranged through the avoiding opening, and the rack being 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, so that the space can be reasonably utilized, and the size of the folding screen test device can be reduced. The support frame is arranged through the avoiding opening to fix the rack, which can facilitate the connection between the rack and the lead screw, and can also make the rack closer to the opening and closing mechanism, thereby reducing the length of the swing arm and saving materials.

[0027] In a possible implementation, the folding screen test device further comprises a shielding shell, the driving motor and the lead screw being arranged between the first base and the second base, and the shielding shell and the first base forming a box body to enclose the driving motor, the lead screw and the second base.

[0028] The box body formed by the shielding shell and the first base can shield the components below the first base, improve the appearance, avoid the components (such as the lead screw and the driving motor) below the first base from being contacted with external foreign matters to cause jamming, prevent the test operator from touching the lead screw and the driving motor, and ensure the personal safety of the test operator. In addition, the box body formed by the shielding shell and the first base can also reduce the noise of the driving motor.

[0029] In a possible implementation, the fixing frame is in a box body structure, and the fixing frame is arranged outside part of the support frame, the rack and the gear.

[0030] The fixed frame of the box structure can shield the support frame, the rack and the pinion, thereby improving the appearance and preventing the rack and the pinion from being blocked by external foreign matters. In addition, the tester can be prevented from touching the pinion and the gear teeth, thereby ensuring the tester's personal safety.

[0031] In a possible implementation, the folding screen testing device further comprises a first camera and a second camera.

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

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

[0034] In a possible implementation, the folding screen testing device further comprises a lifting member, a first support and a second support. The bottom of the lifting member is fixed to the plane where the first base is located. A slide perpendicular to the plane where the first base is located is formed in the lifting member. The first support and the second support are both slidingly arranged in the slide. One end of the first support and the second support is connected to the slide respectively. The other end of the first support and the second support extends towards the opening and closing mechanism. The first camera is fixed to the end of the first support away from the lifting member. The second camera is fixed to the end of the second support away from the lifting member. In this way, the distance between the first camera and the second camera and 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 axis of the first camera and the second camera is perpendicular to the plane where the opening and closing mechanism is located when the opening and closing mechanism is in the unfolded state. The lens of the first camera and the second camera points to the side of the second clamp close to the first clamp. In this way, the image formed by 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 first camera and the second camera on the target test piece.

[0036] In a possible implementation, when the opening and closing mechanism is in the unfolded state, the opening and closing mechanism is arranged at an angle with 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° and 25°. 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, the folding screen testing device can ensure the reliability of the visual defect detection of the second camera on the target test piece, while taking into account the convenience of assembling the target test piece to the opening and closing mechanism and the feasibility of achieving the minimum height of the folding screen testing device.

[0038] In a possible implementation, the folding screen testing device further comprises a pressing member configured to press the screen locking key of the foldable electronic device.

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

[0040] In a possible implementation, a torque sensor is arranged at the connection between the swing arm and the gear, and the torque sensor is configured 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 testing device needs to be debugged to ensure stable operation of the folding screen testing device.

[0042] In a second aspect, the application provides a testing system, which comprises an environmental box, an electric control device and the folding screen testing device as described above. The electric control device is electrically connected to the environmental box and the folding screen testing device. The environmental box has a receiving cavity, and the environmental box can adjust the environment in the receiving cavity, such as temperature, humidity, light, etc. The folding screen testing device is arranged in the environmental box.

[0043] The testing system provided by the application can realize composite testing under multiple environments. In the folding screen testing device, when the nut of the lead screw is driven by the driving motor to move to a fully unfolded state, one stopper is used to cooperate with the nut to limit the nut from moving in the current moving direction, so as to prevent the driving motor from rotating excessively and to stop the driving motor in time. When the nut of the lead screw is driven by the driving motor to move to a fully folded state, another stopper is used to cooperate with the nut to limit the nut from moving in the current moving direction, so as to prevent the driving motor from rotating excessively and to stop the driving motor in time, and to prevent the transmission assembly from rotating excessively. In a first aspect, the folding screen testing device provided by the application is replaced by automatic opening and closing testing instead of manual opening and closing testing, which can improve the testing efficiency of the folding screen performance and service life, and save time and effort. In a second aspect, the folding screen testing device provided by the application can prevent the transmission assembly from rotating excessively. In a further aspect, since the problem of excessive rotation angle of the swing arm is overcome, the driving device can rotate at a faster speed, and the single opening and closing test can be completed in a shorter time, which can meet the reproduction of the opening and closing time scene of the foldable electronic device in actual use, and make the test scene of the folding screen testing device more consistent with the actual use scene of the foldable electronic device.

[0044] In some embodiments of the present application, when the folding screen testing device comprises 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, 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 work, and the electric control device controls the second camera to stop working, if the target folding screen is an outer folding screen, the electric control device controls the second camera to work, and the electric control device controls the first camera to stop working. Thus, the testing system can be adapted to test outer folding foldable electronic devices and inner folding foldable electronic devices. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 A schematic view of an unfolded state structure of a foldable electronic device;

[0046] Figure 2 A schematic view of a folded state structure of a foldable electronic device;

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

[0048] Figure 4 A schematic view of a testing system provided by an embodiment of the present application;

[0049] Figure 5 A schematic view of a structure of an environmental box provided by an embodiment of the present application;

[0050] Figure 6 A schematic view of a structure of an environmental box provided by an embodiment of the present application; Figure 5 A schematic view of a sectional structure of an environmental box along a section line A-A;

[0051] Figure 7 A schematic view of a structure of a folding screen testing device provided by an embodiment of the present application;

[0052] Figure 8 A schematic view of a structure of a folding screen testing device provided by an embodiment of the present application;

[0053] Figure 9a A schematic view of a structure of a folding screen testing device provided by an embodiment of the present application;

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

[0055] Figure 10 A schematic view of changes of an angle, a speed and an acceleration of a driving motor in an opening and closing process of the folding screen testing device;

[0056] Figure 11Part structure schematic diagram of the folding screen test device provided by an embodiment of the present application;

[0057] Figure 12 Part structure schematic diagram of the folding screen test device provided by an embodiment of the present application;

[0058] Figure 13 Part structure schematic diagram of the folding screen test device provided by an embodiment of the present application;

[0059] Figure 14 Structure schematic diagram of the folding screen test device provided by an embodiment of the present application;

[0060] Figure 15 Structure schematic diagram of a foldable electronic device;

[0061] Figure 16 Flowchart of the opening and closing test provided by an embodiment of the present application.

[0062] Legend of reference signs:

[0063] 10 - foldable electronic device;

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

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

[0066] 1000 - test system;

[0067] 100 - environmental box; 110 - containing cavity; 120 - opening and closing door;

[0068] 200 - electric control device;

[0069] 300 - folding screen test device;

[0070] 310 - supporting leg;

[0071] 320 - first base; 321 - avoiding opening; 322 - pointer;

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

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

[0074] 350 - drive motor; 360 - lead screw; 361 - threaded segment; 362 - stopper; 370 - fixed bracket; 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 - press button; 396 - lifting member; 3961 - slide; 397 - first bracket; 398 - second bracket. DETAILED DESCRIPTION

[0076] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The implementation 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 screen and the device itself between an unfolded and folded state. Depending on the user's needs, a foldable electronic device 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, and sports cameras. In the embodiments of this application, there is no restriction on the specific type of foldable electronic device used as the test target, as long as it is an electronic device with a foldable screen. For ease of understanding, the embodiments of this application are described by taking 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, generally, the foldable electronic device 10 generally comprises a folding screen 11, a first main body part 12, a second main body part 13 and a rotating part 14. Specifically, the first main body part 12 and the second main body part 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 part 12 and the second main body part 13 to be unfolded and folded relative to each other. The structures of the first main body part 12 and the second main body part 13 can be the same, can not be completely the same, or can be completely different. It can be understood that, in addition to using one rotating part 14 and two main body parts to form a two-layer folding structure, the foldable electronic device 10 can also use multiple rotating parts 14 and more than two main body parts to form a folding structure with more layers. In the examples of the present application, only two main body parts are described.

[0080] The folding screen 11 is attached to one side of the first main body part 12 and the second main body part 13 that are close to or away from each other when folded. For example, as shown in FIG. 1A, from the perspective of a user observing the folding screen 11, when the foldable electronic device 10 is in a flat state, the user faces the folding screen 11, and the folding screen 11 is attached to the upper surface of the first main body part 12 and the second main body part 13. During the process of unfolding and folding the first main body part 12 and the second main body part 13 relative to each other, the folding screen 11 is also unfolded and folded together with the first main body part 12 and the second main body part 13. Figure 1

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

[0082] Among them, when the foldable electronic device 10 is in a folding state, the folding screen 11 is located inside the first main body part 12 and the second main body part 13, and the foldable electronic device 10 is a screen-in folding device; when the foldable electronic device 10 is in a folding state, the folding screen 11 is located outside the first main body part 12 and the second main body part 13, and the foldable electronic device 10 is a screen-out folding device. For example Figure 1 and Figure 2 As shown in FIG. 1D, the foldable electronic device 10 is a screen-out folding device.

[0083] Figure 3 ​​​FIG. 1 shows a schematic diagram of a foldable electronic device 10, and FIG. 2 shows a schematic diagram of a foldable screen 11 of the foldable electronic device 10. Figure 3 As shown in FIG. 1, the foldable screen 11 generally includes a foldable display portion 11c and a first display portion 11a and a second display portion 11b located on both sides of the foldable display portion 11c. During use of the foldable electronic device 10, the first display portion 11a and the second display portion 11b generally do not deform, and the foldable display portion 11c deforms so that the foldable screen 11 can realize relative unfolding and folding. For example, when the foldable electronic device 10 is completely folded, the display foldable portion can deform into a water drop shape.

[0084] It should be noted that, Figure 3 The dashed line is only used to distinguish the regions of the first display portion 11a, the second display portion 11b and the display foldable portion, and is not indicative of a structure line. The foldable screen 11 is still a complete screen. In addition, the length and width dimensions of the first display portion 11a and the second display portion 11b can be the same, can not be completely the same, or can be completely different.

[0085] Since the foldable electronic device 10 described above can be switched between the unfolded state and the folded state, when a user uses the foldable electronic device 10 to browse a webpage, information, a video, play a game, etc., the foldable electronic device 10 can be switched from the folded state to the unfolded state, a large screen display can be realized, more abundant information can be provided to the user, and a better user experience can be provided to the user. 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, and the foldable electronic device 10 can be conveniently stored.

[0086] Therefore, during use of the foldable electronic device 10, the foldable electronic device 10 needs to be frequently switched between the unfolded state and the folded state. In this way, the foldable display portion 11c of the foldable screen 11 is frequently switched between the bent state and the flat state. Over a long period of time, the foldable display portion 11c and the junctions of the foldable display portion 11c with the first display portion 11a and the second display portion 11b are prone to cracking and breaking, which affects the service life of the foldable screen 11. In order to manufacture a foldable electronic device 10 that can meet the use requirements of a user, the performance and service life of the foldable screen 11 often need to be tested, that is, the foldable screen 11 or the foldable electronic device 10 needs to be repeatedly folded and unfolded (i.e., opened and closed) to test the cracking or breaking of the foldable display portion 11c and the junctions of the foldable display portion 11c with the first display portion 11a and the second display portion 11b. Generally, the foldable electronic device 10 or the foldable screen 11 can be manually opened and closed by a person to perform the test. However, this manual opening and closing of the foldable screen 11 for performance and service life testing is inefficient and time-consuming.

[0087] In addition, in the related art, there is also a way of testing the opening and closing of the foldable electronic device 10 or the folding screen 11 by using an automatic device. In this way, 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 a driving device is used to rotate and drive the swing arm 343 to drive the clamp to open and close. However, this way is generally only suitable for testing at a slow opening and closing speed, and a faster opening and closing speed will cause the swing arm 343 to overshoot the rotation angle or the swing arm 343 to swing and shake. The swing arm 343 overshooting the rotation angle will cause the unfolding angle of the foldable electronic device 10 to exceed the preset value, which will damage the rotating part 14 of the foldable electronic device 10, causing the foldable electronic device 10 to be damaged. The swing arm 343 swinging and shaking will cause the rotating part 14 of the foldable electronic device 10 and the folding screen 11 to repeatedly move within a certain angle range, which does not match the actual use scene that needs to be reproduced, and also affects the test results of the opening and closing test.

[0088] To solve the above problems, the folding screen test device and test system provided by the embodiments of the present application are provided. In the folding screen test device, the related art driving device rotates and drives the swing arm to drive the clamp to open and close, which is replaced by the driving device rotating and driving 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] In the first aspect, the folding screen test device provided by the embodiments of the present application replaces manual opening and closing test with automatic opening and closing test, which can improve the test efficiency of the folding screen performance and service life, and save time and effort. In the folding screen test device provided by the embodiments of the present application, when the driving motor drives the nut of the lead screw to move to the fully unfolded state of the opening and closing mechanism, one of the stop pieces is used to cooperate with the nut to limit the nut from moving in the current moving direction, so as to prevent the driving motor from over-rotation, so as to facilitate the timely stop of the driving motor. When the driving motor drives the nut of the lead screw to move to the fully folded state, the other stop piece is used to cooperate with the nut to limit the nut from moving in the current moving direction, so as to prevent the driving motor from over-rotation, so as to facilitate the timely stop of the driving motor, and prevent the rotation angle of the transmission assembly from overshooting. In another aspect, since the problem of swing arm rotation angle overshooting is overcome, the driving device can rotate at a faster speed, and the single opening and closing test can be completed in a shorter time, which meets the reproduction of the opening and closing time scene in the actual use of the foldable electronic device, so that the test scene of the folding screen test device is more consistent with the actual use scene of the foldable electronic device.

[0090] In addition, the test system provided in the embodiment of the present application further includes an environmental box, which can adjust the environment, such as temperature, humidity, light, etc., in which the foldable screen test device is located, so as to restore the scene when the foldable electronic device is used, and make the test result of the foldable screen test device more accurate.

[0091] The foldable screen test device and the test system provided in the embodiment of the present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0092] In the research and development stage of the foldable electronic device 10, the main reasons for the cracks and fractures at the folding display part 11c of the foldable screen 11 and the junctions of the folding display part 11c with the first display part 11a and the second display part 11b include: the folding speed of the foldable screen 11, the folding frequency of the foldable screen 11, and the environment, such as temperature and humidity, light, etc., in which the foldable screen 11 is located when being folded. Among them, the folding speed of the foldable screen 11 and the environment in which the foldable screen 11 is located when being folded are the factors to be matched with the actual use environment of the foldable screen 11 in the performance and life test of the foldable screen 11. In other words, by adjusting the folding speed of the foldable screen 11 and the environment in which the foldable screen 11 is located when being folded, the scene in the actual use process of the foldable screen 11 can be reproduced, and then combined with the folding frequency of the foldable screen 11, the test structure of the performance and life test of the foldable screen 11 can be made more accurate.

[0093] Through investigation and test, it is found that there are a large number of users who open or close the foldable screen 11 for 0.5S or even 0.2S at a time, while the fastest opening or closing time of the test equipment in the related art needs 1S. Once the opening or closing speed of the test equipment is too fast, the problems of the overshoot of the rotation angle of the swing arm 343 and the swing of the swing arm 343 will occur. This shows that the user will open or close the foldable screen 11 at a faster speed than the opening or closing speed of the test equipment in the related art when actually using the foldable screen 11 product, so it is necessary to set a faster opening or closing speed in the test stage of the foldable screen 11 to cover the actual use scene of the user, so as to ensure that the foldable screen 11 product has higher reliability in the use process.

[0094] Figure 4 The schematic diagram of the test system 1000 provided in an embodiment of the present application is shown in FIG. 1. Figure 4 The test system 1000 provided in the embodiment of the present application includes an environmental box 100, an electric control device 200 (the electric control device 200 is shown by taking an electric control cabinet as an example) and a foldable screen test device 300 (not shown in the embodiment of the present application, please refer to FIG. 2). Figure 4 Figure 4 Figure 6

[0095] Figure 5 The structural schematic diagram of the environmental box 100 provided in an embodiment of the present application is shown in FIG. 3. Figure 6 Figure 5 ​​​​A cross-sectional view of the environmental box 100 along the cutting line A-A is shown in FIG. 1 1. Referring to FIG. 1 1, the environmental box 100 has a receiving cavity 1 10 in which the folding screen testing device 300 is disposed. Figure 5 and Figure 6 As shown in FIG. 1 1, the environmental box 100 has a receiving cavity 1 10 in which the folding screen testing device 300 is disposed. Figure 6 As shown in FIG. 1 1, the environmental box 100 has a receiving cavity 1 10 in which the folding screen testing device 300 is disposed. Figure 4 As shown in FIG. 1 1, the environmental box 100 has a receiving cavity 1 10 in which the folding screen testing device 300 is disposed.

[0096] The environmental box 100 can adjust the environment in the receiving cavity 1 10, such as adjusting temperature, humidity, light (light intensity, light type, etc., wherein the light type includes incandescent light, infrared light, ultraviolet light, etc.). For example, the environmental box 100 can include a temperature raising device, a temperature lowering 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 disposed in the receiving cavity 1 10 or in a region of the environmental box 100 other than the receiving cavity 1 10. Accordingly, the temperature in the receiving cavity 1 10 can be adjusted by the temperature raising device and the temperature lowering device, the humidity in the receiving cavity 1 10 can be adjusted by the humidifying device and the dehumidifying device, and the environmental light in the receiving cavity 1 10 can be changed by switching on or off the lamps and adjusting the light intensity of the lamps. Thus, the environmental box 100 can adjust the environment in the receiving cavity 1 10 to simulate various scenarios of the folding screen 1 1 in use, and the folding screen testing device 300 can be more persuasive and practical in testing the folding and unfolding of the folding screen 1 1.

[0097] The electric control device 200 is electrically connected with the environmental box 100 and the folding screen testing device 300 respectively. The electric control device 200 is used for controlling the environmental box 100 and the folding screen testing device 300. For example, the electric control device 200 can control the start and stop of the environmental box 100 and the folding screen testing device 300, adjust the temperature, humidity and light of the environmental box 100, and adjust the rotating speed of the driving device in the folding screen testing device 300. In addition, the electric control device 200 can be provided with start and stop buttons, adjustment buttons and the like, which are used for starting and stopping and adjusting the environmental box 100 and the folding screen testing device 300, thereby reducing the operation difficulty. The electric control device 200 can also be provided with a terminal device, such as a computer.

[0098] Figure 7 The folding screen testing device 300 provided by an embodiment of the present application is shown in a structural schematic diagram, as shown in Figure 7 The folding screen testing device 300 provided by the embodiment of the present application comprises a first base 320, an opening and closing mechanism 330, a driving motor 350 (as shown in Figure 9a ), a lead screw 360 (as shown in Figure 9a ), a transmission assembly 340 and a fixing frame 370.

[0099] Specifically, Figure 8 The folding screen testing device 300 provided by an embodiment of the present application is shown in a partial structural schematic diagram, as shown in Figure 8 The opening and closing mechanism 330 is arranged on the first base 320, and the first base 320 provides a mounting position for the opening and closing mechanism 330, thereby ensuring the stability of the opening and closing mechanism 330 during work.

[0100] The opening and closing mechanism 330 comprises a first clamp 331 and a second clamp 332, which are used for fixing the target folding screen 11. In addition to a single target folding screen 11, the target folding screen 11 also includes a foldable electronic device 10 carrying a target display screen. For example, the first display part 11a of the folding screen 11 can be fixed to the first clamp 331, and the second display part 11b of the folding screen 11 can be fixed to the second clamp 332, or the first main body part 12 of the foldable electronic device 10 can be fixed to the first clamp 331, and the second main body part 13 of the foldable electronic device 10 can be fixed to the first clamp 331. The fixing mode of the opening and closing mechanism 330 to the folding screen 11 or the foldable electronic device 10 can be a series of conventional fixing modes such as clamping, fastener linking, bonding and binding.

[0101] The second clamp 332 is arranged to rotate around the first clamp 331, that is, the second clamp 332 and the first clamp 331 have an axis of rotation (as shown in Figure 8The second clamp 332 can rotate around the first clamp 331 according to the rotation axis (indicated by the dashed line B) to switch the opening and closing mechanism between the fully unfolded state and the fully folded state.

[0102] The first clamp 331 and the second clamp 332 can be connected, for example, as shown in Figure 8 The first clamp 331 and the second clamp 332 can be connected, for example, as shown in

[0103] The rotation axis of the second clamp 332 around the first clamp 331 (i.e., the dashed line B in Figure 8 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, and the coordinate system is used in the drawings of the present application.

[0104] In order to more clearly observe the structure possessed by the folding screen testing device 300 in operation, part of the structure of the folding screen testing device 300 is hidden in Figure 8 , Figure 9a , Figure 9a A partial structure diagram of the folding screen testing device 300 provided by an embodiment of the present application is shown in Figure 9a and in combination with Figure 8 In the folding screen testing device 300 provided by the embodiment of the present application, the driving motor 350 can be a high-low temperature servo motor, and the driving motor 350 is a rotary motor.

[0105] The lead screw has a nut and a screw rod. The nut is sleeved on the screw rod and threadedly cooperates with the screw rod.

[0106] The screw rod of the lead screw 360 is connected with the output rotating shaft of the driving motor 350, and continues to refer to Figure 9a In the embodiment of the present application, the transmission assembly 340 is connected with the nut of the lead screw 360 and the second clamp 332, respectively. When the output rotating shaft of the driving motor rotates, the output rotating shaft drives the lead screw 360 to work, and the transmission assembly 340 is used to drive the second clamp 332 to rotate around the first clamp 331 after being driven by the driving force of the lead screw 360.

[0107] Figure 9b A structure diagram of the screw rod of the lead screw provided by an embodiment of the present application is shown in Figure 9bAs shown, the screw has a threaded segment 361, and both ends of the thread of the threaded segment 361 have stoppers 362. When the opening and closing mechanism is fully unfolded and fully folded, the nut of the lead screw 360 is located at both ends of the thread of the threaded segment 361, respectively.

[0108] In the three-dimensional coordinate system in the drawings, 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 fully unfolded and fully folded, the nut of the lead screw is located at both ends 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 in the second direction is adapted to the rotation angle of the output rotating shaft of the driving motor 350. Wherein, "the length of the thread on the threaded segment 361 of the lead screw 360 in the second direction is adapted to the rotation angle of the output rotating shaft of the driving motor 350" means that when the output rotating shaft of the driving motor 350 rotates clockwise to the unfolded position and stops, the nut of the lead screw 360 just stops at one end of the thread of the screw rod of the lead screw 360, and when the output rotating shaft of the driving motor 350 rotates counterclockwise to the folded position and stops, the nut of the lead screw 360 just stops at the other end of the thread of the screw rod of the lead screw 360. There are many implementation modes of the stopper 362. For example, a protruding stopper 362 can be arranged at both ends of the thread of the threaded segment 361, and the protruding stopper 362 can have a stopping effect on the nut of the lead screw, avoiding the nut of the lead screw from leaving the threaded segment 361. It can also be that the threaded segment 361 of the lead screw has a non-threaded segment 361 at both ends of the thread, and the non-threaded segment 361 is concentrically arranged with the threaded segment 361, and the distance from the outer periphery of the non-threaded segment 361 in the radial direction to the axis is greater than the distance from the outer periphery of the threaded segment 361 in the radial direction to the axis.

[0110] In actual application, due to component manufacturing tolerance, driving motor 350 power adjustment error and other reasons, the rotating speed of the output shaft of the driving motor 350 may not be reduced to 0 when the nut of the lead screw 360 reaches the end of the thread of the screw rod of the lead screw 360. Here, it needs to be mentioned that when the folding screen 11 is converted from the unfolded state to the folded state or from the folded state to the unfolded state during the operation of the folding screen test device 300, the last stage is the deceleration process of the driving motor 350, and the driving motor 350 needs to be decelerated from the maximum operating speed to 0. In the case that the rotating speed of the output shaft of the driving motor 350 is not reduced to 0 when the nut of the lead screw 360 reaches the end of the thread of the screw rod of the lead screw 360, the nut of the lead screw 360 will continue to move, and there is a problem of excessive rotation of the driving motor. Based on this, in the present application, when the driving motor drives the nut of the lead screw 360 to move to the fully unfolded state, one of the stop pieces 362 is used to cooperate with the nut to limit the nut from moving in the current moving direction, thereby preventing the excessive rotation of the driving motor and facilitating the timely stop of the driving motor. When the driving motor drives the nut of the lead screw 360 to move to the fully folded state, the other stop piece 362 is used to cooperate with the nut to limit the nut from moving in the current moving direction, thereby preventing the excessive rotation of the driving motor and facilitating the timely stop of the driving motor. The threaded segment 361 thereby prevents the transmission assembly 340 from rotating excessively with the second clamp 332.

[0111] In some embodiments of the present application, the transmission assembly 340 can 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). As shown in FIG. Figure 9a The rack 341 is connected to the nut of the lead screw 360 in an indirect manner through an intermediate component, which will be described in detail below. The connection manner of the rack 341 to the nut of the lead screw 360 is not limited in the embodiments of the present application, 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] Referring to Figure 9a and in combination with Figure 8 As shown, the gear 342 is engaged with the rack 341 without clearance. Here, “the gear 342 is engaged with the rack 341 without clearance” means that there is no clearance between the teeth of the gear 342 and the teeth of the rack 341 when they are engaged. The gear 342 is fixed on a fixed frame 370, which is arranged on the first base 320. The gear 342 is fixed on the fixed frame 370, and only performs a rotating motion along its rotating shaft. The rotating shaft of the gear 342 extends along the first direction (X direction).

[0113] The swing arm 343 is connected to the rotation axis of the gear 342 and the second clamp 332, respectively. The gear 342 is used to drive the swing arm 343 to drive the second clamp 332 to rotate about the first clamp 331. When the drive motor 350 is in operation, the lead screw 360 drives the rack 341 to reciprocate in the second direction (the Y direction). The gear 342 is driven by the reciprocating motion of the rack 341 to rotate clockwise and counterclockwise accordingly. The swing arm 343 drives the second clamp 332 to rotate around the first clamp 331 and open and close in response to 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] Figure 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. Figure 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 Figure 10 As shown in ac, t3 is the total time from the folded state to the unfolded state or 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 and rotates at a constant speed, with a rotation angle of d2-d1. In the time period t2-t3, the driving motor has an acceleration of -a m Decelerate to 0, and the rotation angle is 180°-d2. The rapid opening and closing test requires the motor to complete the above three processes in a shorter time. This 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 and does not encounter other problems.

[0116] It can be understood that, in the folding screen test device 300 provided by the embodiment of the application, the screw rod 360 is driven to rotate by the rotary motor, the rack 341 is driven to move back and forth in the second direction (Y direction) by the screw rod 360, the gear 342 is correspondingly driven to rotate clockwise and counterclockwise by the back-and-forth movement of the rack 341, and the second clamp 332 is driven to rotate around the first clamp 331 to open and close by the clockwise rotation and counterclockwise rotation of the gear 342. In the first aspect, the folding screen test device 300 provided by the embodiment of the application replaces manual opening and closing test with automatic opening and closing test, which can improve the test efficiency of the performance and service life of the folding screen 11 and save time and effort.

[0117] In the second aspect, in the folding screen test device 300 provided by the embodiment of the application, the two ends of the threaded segment 361 of the screw rod of the screw rod 360 are provided with the stoppers 362. When the nut of the screw rod 360 is driven to move to the fully unfolded state by the driving motor 350, one of the stoppers 362 is used to cooperate with the nut to limit the nut from moving in the current moving direction, so as to prevent the over-rotation of the driving motor 350 and facilitate the timely stop of the driving motor. When the nut of the screw rod 360 is driven to move to the fully folded state by the driving motor, the other stopper 362 is used to cooperate with the nut to limit the nut from moving in the current moving direction, so as to prevent the over-rotation of the driving motor 350 and facilitate the timely stop of the driving motor. Thus, the over-rotation of the swing arm 343 can be prevented.

[0118] In the third aspect, the rack 341 and the gear 342 are gapless, which has the advantage of high precision and can prevent the swing arm 343 connected to the gear 342 from swinging.

[0119] In the further aspect, the problems of the over-rotation of the swing arm 343 and the swinging of the swing arm 343 are solved, the driving motor 350 can operate at a faster speed, the opening and closing test can be completed in a shorter time, the opening and closing time scene in actual use of the foldable electronic device 10 can be reproduced, and the test scene of the folding screen test device 300 is more consistent with the actual use scene of the foldable electronic device 10.

[0120] In addition, in the embodiment of the application, the driving motor 350 is a rotary motor rather than a telescopic motor, because the telescopic motor itself has the risk of telescopic over-rotation.

[0121] The folding screen test device 300 provided by the embodiment of the application can realize the opening and closing test of the foldable electronic device 10 or the folding screen 11 in multiple forms (for example, inner folding, outer folding, vertical folding, etc.), and can quickly unfold the folding screen 11 or close the folding screen 11 in 200 ms or even faster, and the swing arm 343 has no over-rotation phenomenon and obvious swinging.

[0122] Of course, the embodiments of the present application are not limited to this, and continue to refer to Figure 9a As shown in the figure, in some embodiments of the present application, the transmission assemblies 340 are two groups, and the two groups of transmission assemblies 340 are oppositely arranged in the first direction (X direction), in which 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 connecting line of 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 the two sides of the opening and closing mechanism 330. It is easy to understand that when the transmission assembly 340 is only one group, the second clamp 332 and the swing arm 343 are prone to rotating obliquely when working, which causes the force at each point of the connection between the second clamp 332 and the first clamp 331 to be uneven when the second clamp 332 rotates around the first clamp 331, resulting in damage to the opening and closing mechanism 330. When the transmission assembly 340 is two groups, the above problems can be improved or solved. In the embodiments of the present application, the transmission assembly 340 is always two groups, but it is not excluded that the transmission assembly 340 is only one group or has multiple groups.

[0123] In some embodiments of the present application, when the transmission assembly 340 is two groups (or multiple groups), the lead screws 360 and the drive motors 350 can also be correspondingly matched with two (or multiple), and the racks 341 in each group of transmission assemblies 340 are respectively connected with the corresponding lead screws 360. In some other embodiments of the present application, the number of drive motors 350 and lead screws 360 is one, and the racks 341 in the two groups of transmission assemblies 340 are respectively connected with the lead screws 360. In this way, the two swing arms 343 driven by a single drive motor 350 can have synchronism, thereby ensuring the stability of the second clamp 332 when rotating around the first clamp 331.

[0124] Figure 11 The partial structure schematic diagram of the folding screen test device 300 provided by an embodiment of the present application is shown in the figure, and the opening and closing mechanism 330 is shown in the figure. Figure 11As shown, in some embodiments of the present application, the two swing arms 343 in the two groups of transmission assemblies 340 can be connected to form a joint swing arm 343a. The second clamp 332 has a first end and a second end at two ends in the first direction. The joint swing arm 343a is connected to the second clamp 332 between the first end and the second end, and the distance from the joint swing arm 343a to the first end is equal to the distance from the joint swing arm 343a 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 still part manufacturing tolerances and part 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. The two swing arms 343 can be connected by a series of existing connection methods such as fasteners, adhesion, clamping, welding, etc. They can also be integrally formed into an indivisible part. The joint swing arm 343a is connected to the second clamp 332 at the central axis of the second clamp 332 in the first direction. In this way, during the rotation of the second clamp 332 around the first clamp 331, the force on each point of the connection between the second clamp 332 and the first clamp 331 is uniform, 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 being damaged.

[0125] In some embodiments of the present application, in order to realize the connection between the joint swing arm 343a and the second clamp, the folding screen test device 300 can further include a connecting piece 3321. One end of the connecting piece 3321 is connected to the joint swing arm 343a, and the other end is connected to the second clamp 332.

[0126] In the folding screen test device 300 provided in the embodiments of the present application, the rotation axis of the second clamp 332 around the rotation axis of the first clamp 331 and the rotation axis of the gear 342 can or can not be on a straight line. When the rotation axis of the opening and closing mechanism 330 and the rotation axis of the gear 342 are not on a straight line, during the working process of the folding screen test device 300, the relative displacement difference between the swing arm 343 and the second clamp 332 appears and the displacement changes constantly with the rotation of the swing arm 343 and the second clamp 332. If the connecting piece 3321 is rigidly connected with the second clamp 332 and the combined swing arm 343a, this will cause the second clamp 332 to generate a pulling force or a pressing force on the first clamp 331, thereby causing the problem of damage to the opening and closing mechanism 330. For example, when the rotation axis of the gear 342 is closer to the connection position of the combined swing arm 343a and the second clamp 332 than the rotation axis of the second clamp 332, if the connecting piece 3321 is rigidly connected with 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 piece 3321. When the rotation axis of the gear 342 is farther away from the connection position of the combined swing arm 343a and the second clamp 332 than the rotation axis of the second clamp 332, if the connecting piece 3321 is rigidly connected with the second clamp 332 and the combined swing arm 343a, the combined swing arm 343a will drive the second clamp 332 to generate a pressing force on the first clamp 331 through the connecting piece 3321.

[0127] To solve the above problems, with reference to Figure 11 In some embodiments of the present application, the connecting piece 3321 allows the relative distance between the combined swing arm 343a and the second clamp 332 to change when the combined swing arm 343a drives the second clamp 332 to rotate around the first clamp 331.

[0128] There are various ways to arrange the connecting piece 3321. For example, the connecting piece 3321 can be a telescopic piece itself, which changes the relative distance between the combined swing arm 343a and the second clamp 332 through its telescopic property when the combined swing arm 343a drives the second clamp 332 to rotate around the first clamp 331, thereby preventing the connecting piece 3321 from pulling or pressing the first clamp 331 with the second clamp 332. For another example, the connecting piece 3321 can be connected with the combined swing arm 343a and / or the second clamp 332 through an elastic piece (such as a spring), which changes the relative distance between the combined swing arm 343a and the second clamp 332 through the telescopic property of the elastic piece when the combined swing arm 343a drives the second clamp 332 to rotate around the first clamp 331, thereby preventing the connecting piece 3321 from pulling or pressing the first clamp 331 with the second clamp 332.

[0129] Continuing to refer to Figure 11As shown, in some embodiments of the present application, a configuration 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 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. The sliding connection between the connecting member 3321 and the combined swing arm 343a or the second clamp 332 can compensate for the relative displacement difference between the swing arm 343 and the second clamp 332 during operation, thereby ensuring the stability of the opening and closing of the opening and closing mechanism 330 and preventing damage to the opening and closing mechanism 330.

[0130] Please continue to refer to Figure 11 As shown, to achieve a 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 may be provided on the second clamp 332 or the combined swing arm 343a. In the embodiments of the present application, the provision of two parallel pulleys 3431 on the combined swing arm 343a is used as an example for illustration. 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 to implement. Furthermore, compared to a method where the connecting member 3321 itself is a telescopic member, the connecting member 3321 can also rotate freely relative to the target telescopic connected component (the second clamp 332 or the combined swing arm 343a) between the two pulleys 3431, thereby preventing the connecting member 3321 from being damaged by bending forces. Compared to a method where the connecting member 3321 is connected to the combined swing arm 343a and / or the second clamp 332 via an elastic member, which would cause a lag in the combined swing arm 343a's rotation of the second clamp 332, the sliding connection method provided in this embodiment of the application is more conducive to the combined swing arm 343a driving the rotation of the second clamp 332.

[0131] Figure 12 This is a partial structural diagram of a folding screen testing device 300 provided in one embodiment of the present application, with reference to Figure 12As shown, in some embodiments of the present application, in order to adapt the opening and closing test to the folding screen 11 or foldable electronic device 10 of different thickness, the folding screen test device 300 can further include a lifting platform 380, which 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 are detachably locked in the slide rails 384. The opening and closing mechanism 330 can slide and lock in the slide rails 384, which facilitates the adjustment of the position of the opening and closing mechanism 330.

[0132] The lifting platform 380 can be adjusted in height relative to the first base 320. After the folding screen test device 300 is debugged to adapt to 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 thickness of the target folding screen 11 or foldable electronic device 10 needs to be changed, the lifting platform 380 can be adjusted to drive the opening and closing mechanism 330 to compensate. For example, as shown in the folding screen test device 300, when the thickness of the target folding screen 11 or foldable electronic device 10 is increased, the height of the lifting platform 380 relative to the first base 320 can be reduced, and when the thickness of the target folding screen 11 or foldable electronic device 10 is reduced, the height of the lifting platform 380 relative to the first base 320 can be increased. Figure 11

[0133] There are many ways to realize the lifting adjustment of the lifting platform 380 relative to the first base 320. For example, as shown in the folding screen test device 300, the folding screen test device 300 can further include a height adjustment module, which includes an outer threaded rod 381 and a rotating ring. One end of the outer threaded rod 381 is rotatably connected to the bottom of the lifting platform 380. For example, a bearing can be arranged at the bottom of the lifting platform 380, and the outer threaded rod 381 is matched with the bearing to realize the rotation connection between the outer threaded rod 381 and the bottom of the lifting platform 380. For another example, a cylindrical hole or a sleeve can be arranged at the bottom of the lifting platform 380, and one end of the outer threaded rod 381 is matched with the cylindrical hole or the sleeve to realize the rotation connection between the outer threaded rod 381 and the lifting platform 380. The outer threaded rod 381 has an outer thread, and an inner threaded hole (not shown in the folding screen test device 300) is arranged on the first base 320. The outer thread of the outer threaded rod 381 is matched with the inner threaded hole of the first base 320. A rotating ring 382 is sleeved on the outer threaded rod 381 and fixedly connected. Rotating the rotating ring 382 can realize the lifting adjustment of the lifting platform 380 relative to the first base 320. Figure 12 Figure 12

[0134] ​​​In addition, a scale member can be arranged 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, as shown in Figure 12 The lifting platform 380 can be provided with a scale 383 extending towards the first base 320, and the first base 320 can be provided with a pointer 322 corresponding to the scale 383. The scale 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] With reference back to Figure 12 In some embodiments of the present application, the folding screen testing device 300 can further include a second base 390 and a support frame 391. Specifically, the second base 390 is arranged in a spaced and stacked manner with the first base 320, so that the second base 390 does not interfere with the movement of the first base 320. The second base 390 is arranged on the side of the first base 320 away from the opening and 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. The first base 320 is provided with a avoiding opening 321, and the support member is arranged in the avoiding opening 321. The rack 341 is fixed to the end of the support member away from the second base 390.

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

[0137] With reference to Figure 12 and in combination with Figure 7 In some embodiments of the present application, the folding screen testing device 300 can further include a shielding shell 392. The driving motor 350 Figure 12The shielding shell 392 and the first base 320 form a box structure to enclose the driving 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, improve the appearance, avoid the components below the first base 320 (for example, the lead screw 360 and the driving motor 350) from contacting the external foreign matters to cause jamming, prevent the test operator from touching the lead screw 360 and the driving motor 350, and ensure 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 driving motor 350.

[0138] Similarly, referring to FIG. 4, in some embodiments of the present application, the fixing frame 370 can also be provided as a box structure and cover the outside of the partial support frame 391, the rack 341 and the gear 342. The box structure of the fixing frame 370 can shield the support frame 391, the rack 341 and the gear 342, improve the appearance, and prevent the rack 341 and the gear 342 from contacting the external foreign matters to cause jamming. In addition, the test operator can also be prevented from touching the gear 342 and the teeth, and the personal safety of the test operator can be ensured. Figure 8

[0139] FIG. 4 is a partial structural schematic diagram of the folding screen test device 300 provided by an embodiment of the present application, and FIG. 5 is a partial structural schematic diagram of the folding screen test device 300 provided by another embodiment of the present application. Referring to FIG. 4, in some embodiments of the present application, the fixing frame 370 can also be provided as a box structure and cover the outside of the partial support frame 391, the rack 341 and the gear 342. The box structure of the fixing frame 370 can shield the support frame 391, the rack 341 and the gear 342, improve the appearance, and prevent the rack 341 and the gear 342 from contacting the external foreign matters to cause jamming. In addition, the test operator can also be prevented from touching the gear 342 and the teeth, and the personal safety of the test operator can be ensured. Figure 13 Figure 13 ​As shown, in some embodiments of the present application, in order to perform visual defect detection on the test target foldable screen 11, the foldable screen testing device 300 can further include a first camera 393 and a second camera 394. In the present embodiment, the first clamp 331 has two surfaces, a first surface and a second surface opposite to the first surface, herein the upward surface of the first clamp 331 is defined as the first surface and the downward surface of the first clamp 331 is defined as the second surface, the first camera 393 and the second camera 394 are respectively arranged on the first surface side of the first clamp 331 and the second surface side of the first clamp 331. The first camera 393 and the second camera 394 can be electrically connected with the electric control device 200, or can be electrically connected with an external terminal device. The first camera 393 and the second camera 394 can respectively perform visual defect detection on the inner folding foldable electronic device 10 and the outer folding foldable electronic device 10. For example, when the foldable electronic device 10 is an inner folding electronic device, the foldable screen 11 of the foldable electronic device 10 can be fixed upward on the first surface of the opening and closing mechanism 330, at this time, the first camera 393 can perform visual defect detection on the inner folding foldable electronic device 10. When the foldable electronic device 10 is an outer folding electronic device, the foldable screen 11 of the foldable electronic device 10 can be fixed downward on the first surface of the opening and closing mechanism 330, at this time, the second camera 394 can perform visual defect detection on the outer folding foldable electronic device 10. In this case, the movable clamp and the first clamp 331 are both required to be arranged in a light-transmitting structure, so that the second camera 394 can take pictures or photographs of the foldable screen 11 located on the first surface of the opening and closing mechanism 330.

[0140] With continued reference to Figure 13 As shown, in some embodiments of the present application, the foldable screen testing device 300 can further include a lifting member 396, a first support 397 and a second support 398. Specifically, the bottom of the lifting member 396 is fixed to the plane where the first base 320 is located, for example, as shown in the figure, the lifting member 396 is fixed to the first base 320. Figure 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 piece 396 is provided with a slide 3961 perpendicular to the plane where the first base is located, and the first support 397 and the second support 398 are slidingly arranged in the slide 3961. One end of the first support 397 and the second support 398 is connected with the slide 3961 respectively, and the other end of the first support 397 and the second support 398 extends towards the opening and closing mechanism 330 respectively, and the first camera 393 is arranged at the end of the first support 397 away from the lifting piece. The second camera 394 is arranged at the end of the second support 398 away from the lifting piece. The first camera 393 can be adjusted in height relative to the opening and closing mechanism 330 by sliding on the slide 3961 of the lifting piece 396 through the first support 397, and the second camera 394 can be adjusted in height relative to the opening and closing mechanism 330 by sliding on the slide 3961 of the lifting piece 396 through the second support 398. In this way, the distance between the first camera 393 and the second camera 394 relative to the opening and closing mechanism 330 can be adjusted, which is beneficial to the first camera 393 and the second camera 394 to obtain the best image information of the test piece.

[0142] In some embodiments of the present application, the optical axes of the first camera 393 and the second camera 394 can be arranged to be perpendicular to the plane where the opening and closing mechanism 330 is located when the opening and closing mechanism 330 is in the unfolded state, and the lenses of the first camera 393 and the second camera 394 point to the side of the second clamp 332 close to the first clamp 331. In this way, the images formed by the first camera 393 and the second camera 394 can better cover the test foldable screen, and ensure the reliability of the visual defect detection of the target test piece by the first camera 393 and the second camera 394.

[0143] Figure 14 The structural schematic diagram of the foldable screen test device 300 provided by an embodiment of the present application is shown in Figure 14 and in combination with Figure 12 In some embodiments of the present application, when the opening and closing mechanism 330 is in the unfolded state, the opening and closing mechanism 330 is arranged at an angle α with the plane formed by the first direction and the second direction, 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°-25°. For example, as shown in Figure 12 In an embodiment of the present application, the lifting platform 380 for fixing the opening and closing mechanism 330 can be arranged to be inclined at an angle α with 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, which can be understood as that the plane formed by the first direction and the second direction is the horizontal plane in Figure 14 .

[0144] Before the folding screen test device 300 operates, the target folding screen or target foldable electronic device needs to be fixed in the receiving cavity 110 of the environmental chamber 100. The opening and closing mechanism 330, which is tilted at a certain angle relative to the plane of the first base 320, can facilitate the fixation of the target folding screen or target foldable electronic device. However, if the tilt angle of the opening and closing mechanism 330 is too large, it will not only hinder the fixation of the target test piece, but also increase the height of the folding screen test device 300, increasing the space occupied by the folding screen test device 300 in the environmental chamber 100. Therefore, the tilt angle of the opening and closing mechanism 330 relative to the plane of the first base 320 should not be too large.

[0145] A second camera 394 is provided below the opening and closing mechanism 330. 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 the flattened state, and the optical axis of the second camera 394 passes through the second fixture 332 when it rotates around the axis of rotation of the first fixture 331. Since the distance between the second camera 394 and the opening and closing mechanism 330 must be ensured to ensure imaging quality. Reducing the inclination angle of the opening and closing mechanism 330 will increase the height of the opening and closing mechanism 330 from the second camera 394, 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 space occupied by the folding screen test device 300 in the environmental chamber 100. Therefore, the inclination angle of the opening and closing mechanism 330 and the plane where the first base 320 is 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 reach.

[0147] In actual use, the outward foldable electronic device 10 generally has a lock screen card key 15 (such as Figure 15 As shown in FIG), the lock screen card key 15 is used to lock the folding screen 11 when the foldable electronic device 10 is fully folded, preventing the folding screen 11 from popping out. In order to prevent the folding screen 11 from being locked by the lock screen card key 15 when the opening and closing mechanism 330 of the foldable electronic device 10 is folded, refer to FIG. Figure 11As shown, in some embodiments of the present application, the folding screen testing device 300 can further include a pressing key 395 for pressing the lock screen card key 15 of the foldable electronic device 10, so as to avoid the lock screen card key 15 from locking the folding screen 11 when the folding screen 11 is folded by the opening and closing mechanism 330. The pressing key 395 can be arranged on the opening and closing mechanism 330, the lifting platform 380, or the surrounding components of the opening and closing mechanism 330, and the present application does not limit the arrangement position of the pressing key 395, as long as the pressing key 395 can press the lock screen card key 15 of the foldable electronic device 10. Figure 11 In some embodiments of the present application, the pressing key 395 is arranged on the lifting platform 380 as an example.

[0148] In some embodiments of the present application, the folding screen testing device 300 can further include a torque sensor (not shown in the drawings of the present application) arranged at the connection between the swing arm 343 and the gear 342, which 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 testing device 300 needs to be debugged to ensure stable operation of the folding screen testing device 300.

[0149] In an embodiment of the present application, in order to make the folding screen testing 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 193 mm (the distance from the free end of the swing arm 343 to the rotating shaft of the gear 342), the pitch circle diameter of the gear 342 can be set to 50.9 mm, the pitch of the rack 341 can be set to 16 mm, the diameter of the lead screw 360 can be set to 25 mm, the lead of the lead screw 360 can be set to 25 mm, the torque of the driving motor 350 can be set to 1.5 N·m, and the rated speed of the driving motor 350 can be set to 3000 r / min. In this embodiment, the driving motor 350 drives the rack 341 to move at a speed of 400 mm / s with a thrust of 251 N, and the gear 342 engaged with the rack 341 rotates at an angular velocity of 900° / s, and the swing arm 343 can be opened to 180° to fold the folding screen 11 in 0.2 s. The folding screen testing device 300 under this specification can also have an additional safety factor of 2.5 times, and the driving motor 350 can not exceed 80% of the rated speed when working.

[0150] The working process of the folding screen testing device 300 is briefly introduced below. First, adjust the opening and closing mechanism 330, and fix one half of the target folding screen 11 on the first clamp 331 and the other half on the second clamp 332. At this time, the opening and closing mechanism 330 is in an unfolded state. After setting the opening and closing speed, environmental temperature and humidity, light, and opening and closing times of the folding screen testing device 300, start the test. The electric 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 electric control device 200 determines the type of the target folding screen according to the image information of the first camera 393 and the second camera 394. The software algorithm determines whether it is an inner folding foldable electronic device 10 or an outer folding foldable electronic device 10. If it is an inner folding foldable electronic device 10, the electric control device 200 controls the first camera 393 and the driving motor 350 to work, and controls the second camera 394 to stop working. If it is an outer folding foldable electronic device 10, the electric control device 200 controls the second camera 394 and the driving motor 350 to work, and controls the first camera 393 to stop working. Then the high-low temperature servo driving motor 350 drives the lead screw 360 to rotate clockwise and counterclockwise, driving the rack 341 to move back and forth 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 movement. When the folding screen 11 is unfolded each time, the first camera 393 or the second camera 394 will shoot the screen condition, and the visual defect detection algorithm determines whether the current screen is failed according to the picture shot by the first camera 393 or the second camera 394.

[0151] Figure 16 The opening and closing test flowchart provided by an embodiment of the present application is shown in FIG. 8. According to the opening and closing test provided by the embodiment of the present application, the test can be summarized as the following flow: Figure 16

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

[0153] S102, input one or more sets of opening and closing speed, environmental temperature and humidity, and opening and closing times.

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

[0155] S104, the folding screen testing device 300 preferentially reads the first set of input environmental temperature and humidity.

[0156] S105, start the environmental box 100, and adjust the test environment to make the temperature and humidity reach the input parameter value.

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

[0158] ​S107, open and close speed + 1, the initial open and close speed is 0 by default.

[0159] S108, start the driving motor 350, and perform a rapid opening and closing movement according to the read open and close speed.

[0160] S109, the foldable electronic device 10 takes a picture of the entire screen of the folding screen 11 when unfolded each time, and saves the image.

[0161] S110, start the visual defect detection algorithm and identify the picture.

[0162] S111, determine whether the screen is invalid according to the image recognition result, if invalid, record the historical and current open and close speed, environmental temperature and humidity, and open and close times, end the test, if the screen is not invalid, continue to determine.

[0163] S112, determine whether the non-failed screen meets the set open and close times, if not, return to step S107, if yes, continue to determine.

[0164] S113, determine whether there is another open and close speed in the current environmental temperature and humidity, if yes, return to step S106, if not, continue to determine.

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

[0166] In the embodiments of the present application, the term "exemplary" or "for example" is used to represent an example, illustration or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the term "exemplary" or "for example" is intended to present the relevant concept in a specific manner.

[0167] In the description of the embodiments of the present application, the term "at least one" refers to one or more, and "multiple" refers to two or more. "At least one of the following" or the like refers to any combination of the items, including any combination of single item or multiple 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 embodiments of the application, "parallel", "perpendicular", "equal", "coplanar" include the stated case and a case similar to the stated case within an acceptable deviation range, where the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, "parallel" includes absolute parallel and near-parallel, where the acceptable deviation range for near-parallel can be, for example, within ±10° or ±5°. "Perpendicular" includes absolute perpendicular and near-perpendicular, where the acceptable deviation range for near-perpendicular can be, for example, within ±10° or ±5°; "equal" includes absolute equality and near-equality, where the acceptable deviation range for near-equality can be, for example, a difference between the two that is less than or equal to 5% of either. For example, an included angle between two components of 180° includes the case of absolute 180° and near-180°, where the acceptable deviation range for near-180° can be, for example, within ±10° or ±5°; for example, an included angle between two components of 0° includes the case of absolute 0° and near-0°, where the acceptable deviation range for near-0° can be, for example, within ±10° or ±5°. For example, an included angle between two components of 90° includes the case of absolute 90° and near-90°, where the acceptable deviation range for near-90° can be, for example, within ±10° or ±5°.

[0169] In embodiments of the application, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0170] The positional terms mentioned in embodiments of the application, such as "inner", "outer", etc., are only the directions of reference to the drawings, therefore, the positional terms used are for better, clearer illustration and understanding of embodiments of the application, and do not indicate or imply that the devices or elements referred to must have a particular position, and a particular position configuration and operation, and therefore cannot be understood as a limitation on embodiments of the application. In addition, unless otherwise stated in the application, "a plurality of" in the application means two or more.

[0171] In the embodiments of the present application, "and / or" is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0172] In the description of the embodiments of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

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

[0174] In the description of the present application, the specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0175] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A folding screen testing device, characterized by, The utility model relates to a folding screen opening and closing mechanism, including: First base, open and close mechanism, drive motor, screw rod, joint swing arm and connecting piece; The open and close mechanism is arranged in the first base, and the open and close mechanism includes: first clamp and second clamp, the first clamp and the second clamp are used for fixing target folding screen, the second clamp is rotationally arranged around the first clamp, and the rotation axis of the second clamp rotating around the first clamp is along the first direction; The screw rod of the screw rod is connected with the output rotating shaft of the drive motor, the screw rod of the screw rod extends along the second direction, the joint swing arm is connected with the nut of the screw rod and the second clamp respectively, the joint swing arm is used to drive the second clamp to rotate around the first clamp after being driven by the driving force of the screw rod, and the second direction is perpendicular to the first direction; The screw rod of the screw rod has a threaded section, both ends of the threaded section have stop pieces, when the open and close mechanism is in the unfolded state and the folded state, the nut of the screw rod is located at both ends of the threaded section respectively; The joint swing arm includes first swing arm and second swing arm, the first swing arm and the second swing arm are oppositely arranged in the first direction and are located on both sides of the open and close mechanism respectively; One end of the connecting piece is connected with the joint swing arm, and the other end of the connecting piece is connected with the second clamp; One end of the connecting piece is fixedly connected with one of the second clamp and the joint swing arm, and the other end of the connecting piece is slidingly connected with the other one of the second clamp and the joint swing arm.

2. The folded screen testing apparatus of claim 1, wherein, Further including: The fixed frame is erected on the first base; Further including: rack and gear, the rack is connected with the nut of the screw rod, the nut of the screw rod is used to drive the rack to reciprocate in the second direction, the gear is engaged with the rack without clearance, the gear is fixed on the fixed frame, the rotating shaft of the gear extends along the first direction, the joint swing arm is connected with the rotating shaft of the gear and the second clamp respectively, and the gear is used to drive the joint swing arm to rotate to drive the second clamp to rotate around the first clamp.

3. The folded screen testing apparatus of claim 2, wherein, The drive motor and the screw rod are one, the rack and the gear are provided with two groups, and two racks are connected with the screw rod respectively, one of two gears is connected with the rotating shaft of the first swing arm, and the other gear is connected with the rotating shaft of the second swing arm.

4. The folded screen testing apparatus of claim 2, wherein, The second clamp has first end and second end in the first direction, the connection between the joint swing arm and the second clamp is located between the first end and the second end, and the distance from the connection between the joint swing arm and the second clamp to the first end is equal to the distance from the connection between the joint swing arm and the second clamp to the second end.

5. The folded screen testing apparatus of claim 2, wherein, When the rotation axis of the second clamp around the first clamp and the rotating axis of the gear are not in the same straight line, the connecting piece is used to allow the relative distance between the joint swing arm and the second clamp to change when the joint swing arm drives the second clamp to rotate around the first clamp.

6. The folded screen testing apparatus of claim 2, wherein, The second clamp or the combined swing arm is provided with two parallel pulleys, and the rotation axes of the pulleys extend in the first direction. The non-fixed end of the connecting member is clamped between the two pulleys.

7. The folded screen testing apparatus of any of claims 2-6, wherein, Further comprising: a lifting platform; The lifting platform is arranged on the first base, and the opening and closing mechanism is connected to the lifting platform. The lifting platform can be adjusted in height relative to the first base.

8. The folded screen testing apparatus of claim 7, wherein, Further comprising: a height adjustment module; The height adjustment module comprises 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 internally threaded hole is formed in the first base. The other end of the external threaded rod is connected to the internally threaded hole. The rotating ring is sleeved on the external threaded rod and fixedly connected thereto.

9. The folded screen testing apparatus of claim 8, wherein, A scale member is arranged on the first base. The scale member is used to indicate the lifting height of the lifting platform.

10. The folded screen testing apparatus of any of claims 2-6, wherein, Further comprising a second base and a support frame; The second base is arranged in a spaced and stacked manner with the first base. The second base is located on the side of the first base away from the opening and closing mechanism. The nut of the lead screw is connected to the second base. 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 avoiding opening is formed in the first base. The support frame passes through the avoiding opening. The rack is fixed to one end of the support frame away from the second base.

11. The folded screen testing apparatus of claim 10, wherein, Further comprising a shielding shell; The drive motor and the lead screw are arranged between the first base and the second base. The shielding shell and the first base form a box body to enclose the drive motor, the lead screw and the second base.

12. The folded screen testing apparatus of claim 10, wherein, The fixing frame is a box structure. The fixing frame covers part of the support frame, the rack and the gear outside.

13. The folded screen testing apparatus of any of claims 2-6, wherein, Further comprising: a first camera and a second camera; The second clamp and the first clamp are both light-transmitting structures. The first clamp has a first surface and a second surface opposite to the first surface. The first camera and the second camera are arranged on the first surface side of the first clamp and the second surface side of the first clamp, respectively.

14. The folded screen testing apparatus of claim 13, wherein, Further comprising: a lifting member, a first support and a second support; The bottom of the lifting member is fixed to the plane of the first base. A slide is formed in the lifting member perpendicular to the plane of the first base. The first support and the second support are both arranged in the slide in a sliding manner. One end of the first support and the second support is connected to the slide, respectively. The other end of the first support and the second support extends towards the opening and closing mechanism, respectively. The first camera is fixed to one end of the first support away from the lifting member. The second camera is fixed to one end of the second support away from the lifting member.

15. The folded screen testing apparatus of claim 13, wherein, The optical axes of the first camera and the second camera are perpendicular to the plane in which the opening and closing mechanism is in the unfolded state. The lenses of the first camera and the second camera point to the side of the second clamp close to the first clamp.

16. The folded screen testing apparatus of claim 13, wherein, The opening and closing mechanism is arranged at an angle to the plane formed by the first direction and the second direction when the opening and closing mechanism is in the unfolded state, 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°. The plane formed by the first direction and the second direction is parallel to the plane in which the first base is located.

17. The folded screen test apparatus of any of claims 2-6, wherein, Further comprising: A pressing member for pressing a lock screen key of the foldable electronic device.

18. The folded screen test apparatus of any of claims 2-6, wherein, A torque sensor is arranged at the connection between the combined swing arm and the gear, and the torque sensor is used to monitor the torque value at the connection between the combined swing arm and the gear.

19. A test system, characterized by Further comprising: An environmental box, an electric control device, and the folding screen testing device according to any one of claims 1-18; The electric control device is electrically connected with the environmental box and the folding screen testing device respectively, the environmental box has a containing cavity, the environmental box is used to adjust the environment in the containing cavity, and the folding screen testing device is arranged in the environmental box.

20. The test system of claim 19, wherein, In the case where the folding screen testing device comprises a first camera and a second camera, the electric control device is configured to control the first camera and the second camera to simultaneously collect image information of a target folding screen arranged on the opening and closing mechanism, and determine 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 inner folding screen, the electric 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 outer folding screen, the electric control device controls the second camera and the driving motor to operate, and the first camera stops operating.

Images