A device and method for measuring the misalignment of a foldable screen phone hinge.

Abstract

This invention relates to the field of hinge misalignment measurement technology for foldable screen mobile phones, and particularly to a hinge misalignment measurement device and method for foldable screen mobile phones. The hinge misalignment measurement device for foldable screen mobile phones includes a fixing clamp device, a measuring device, and a control device. Two fixing clamp devices are arranged along the Y-axis direction, with the clamping direction at a 90° angle. Two measuring devices are arranged opposite each other, each including a push-pull mechanism and a detection mechanism. The push-pull mechanism includes a telescopic component and a force-applying component. The telescopic component drives the force-applying component and the detection mechanism to move synchronously. The detection mechanism receives the movement distance information of the second display screen and the force information of the force-applying component. The control device controls the operation of the measuring devices, receives and calculates the movement distance information and the force information, and obtains the hinge misalignment result. The advantage of this hinge misalignment measurement device for foldable screen mobile phones is that the measured misalignment result is accurate and the measured data is comprehensive.

Description

Technical Field

[0001] This invention relates to the field of hinge misalignment measurement technology for foldable screen mobile phones, and particularly to a hinge misalignment measurement device and method for foldable screen mobile phones. Background Art

[0002] Foldable screen phones are now widely favored by users, and manufacturers are dedicated to their research and development. The biggest structural challenge for foldable phones lies in the quality of the hinges connecting the two displays. During the flipping process, the degree of misalignment between the two displays not only affects the phone's appearance but also significantly impacts its usability, potentially shortening its lifespan and causing issues such as screen creases, dust resistance, and compromised thinness and lightness. Therefore, manufacturers place great emphasis on the quality of these hinges.

[0003] The testing of hinges for foldable phones has become a mandatory and crucial inspection for all manufacturers before the phones leave the factory. Each manufacturer uses different testing methods and items depending on the specific hinge. For example, Chinese utility model patent CN217563675U relates to the field of foldable phone testing equipment, specifically disclosing a foldable phone rubbing force testing machine. This machine includes a work box, a support platform connected to the top of the work box, and a fixed frame. A testing mechanism is mounted on the top of the support platform. A lifting frame is located near the support platform on the fixed frame, and a height adjustment mechanism is installed on the fixed frame. A fixed platform is located on the top of the lifting frame, with two sets of sample clamps on top, and an adjustment mechanism is installed on the fixed platform. A Y-axis adjustment mechanism is also provided on the lifting frame. The testing mechanism includes a guide seat and a movable seat slidably mounted on the guide seat. An X-axis adjustment mechanism is located on the top of the support platform. A force sensor and a micrometer are located near the sample clamps on the movable seat, and a push rod is mounted on the force sensor. This patented device can only test the hinge's misalignment from one direction. Typically, when forces are applied to a phone from two different directions, the hinge exhibits different degrees of play, thus this device cannot accurately detect hinge play. Furthermore, the force applied by this device is pressure; however, the hinge play resulting from pressure and tension differs between the two displays of a phone when open. Therefore, the play detection results obtained by this patented device are inaccurate, and the detected data is incomplete. Summary of the Invention

[0004] In view of this, the present invention aims to provide a hinge misalignment measurement device and method for foldable screen mobile phones. The device applies force to the second display screen from two directions and measures the hinge misalignment result by combining the displacement data of the second display screen in both directions. The test is carried out using postures at multiple angles. A pull-out clamp device connected to the force-applying component is set up to perform a pull-out test on the mobile phone. This solves the problems of inaccurate misalignment measurement results and incomplete measurement data.

[0005] To address the above problems, this invention provides a device for measuring the misalignment of a foldable screen phone hinge, comprising:

[0006] A fixing clamp device is provided to hold the first display screen of a foldable screen phone. Two fixing clamp devices are provided along the Y-axis direction, and the clamping directions of the two fixing clamp devices are at a 90° angle.

[0007] A measuring device, comprising two measuring devices disposed opposite each other on both sides of the two fixed clamping devices, the measuring device comprising:

[0008] The push-pull mechanism includes a telescopic component and a force-applying component connected to each other. The telescopic component is movable along the X-axis, Y-axis and Z-axis. The force-applying component is driven to telescopically move relative to the fixed clamping device through the telescopic component. The force-applying component is detachably abutted against the second display screen of the mobile phone.

[0009] The detection mechanism moves synchronously with the force-applying component and receives information on the movement distance of the second display screen of the mobile phone and information on the force exerted by the force-applying component on the second display screen.

[0010] The control device controls the operation of the measuring device, receives and calculates the movement distance information and force information, and obtains the hinge misalignment result.

[0011] Furthermore, the telescopic assembly includes a motor, a lead screw, and a helical assembly. The lead screw is connected to the main shaft of the motor, and the helical assembly includes a nut and a connector connected to the nut. The nut is threadedly connected to the lead screw, and the connector is connected to the force-applying component.

[0012] Furthermore, the detection mechanism includes a pressure sensor and a displacement sensor;

[0013] The connecting member and the force-applying member are connected via the pressure sensor;

[0014] The displacement sensor is connected to the connector.

[0015] Furthermore, the aforementioned foldable screen phone hinge misalignment measuring device also includes:

[0016] The pulling clamp device includes:

[0017] A pull-out clamping mechanism clamps the second display screen;

[0018] The pulling member has a hook-shaped end that is detachably hooked to the pulling clamping mechanism, and the other end is detachably connected to the force-applying member.

[0019] Furthermore, the pull-out clamping mechanism includes a connecting frame assembly and two clamping assemblies connected to the connecting frame;

[0020] The connecting frame includes two oppositely arranged connecting plates, which are connected at both ends by a connecting rod, and the puller is hooked to one of the connecting rods;

[0021] Both of the connecting plates can slide along the connecting rod, and the connecting plates are fixed to the connecting rod by a fastener;

[0022] The distance between the two clamping components is adjustable.

[0023] Furthermore, the force-applying member is columnar, and an annular groove is provided on the outer periphery of the force-applying member at the end opposite to the end connected to the connector.

[0024] The other end of the puller relative to the hook-shaped end is provided with an insertion hole that mates with the force-applying member. A fixing post that mates with the annular groove is provided in the insertion hole. The fixing post is telescopic.

[0025] Furthermore, the fixing clamp device includes a clamping seat and a fixing clamping mechanism fixed on the clamping seat;

[0026] The clamping mechanism includes two clamping members, at least one of which is movable relative to the other clamping member.

[0027] A method for measuring the misalignment of a hinge in a foldable screen phone, characterized in that the misalignment of the hinge is measured using the measuring device described above, the measurement method comprising:

[0028] S100: Fold the first and second displays of the foldable phone into a preset angle, clamp the first display through the clamping mechanism, and start the control device;

[0029] S200: The control device controls the movement of the two measuring devices, so that the force-applying component of the first measuring device and the displacement sensor of the second measuring device are located in the same straight line position in the X-axis direction, and the force-applying component of the first measuring device pushes the side wall of the second display screen.

[0030] S300: Measure the first displacement information of the second display screen using the displacement sensor of the first side measuring device; measure the first force information applied by the force-applying component of the first side measuring device using the pressure sensor of the first side measuring device; and measure the second displacement information of the second display screen using the displacement sensor of the second side measuring device.

[0031] S400: Transmit the first displacement information, the second displacement information, and the first force information to the control device, and calculate the first movement distance of the second display screen under the preset pressure;

[0032] S500, the control device controls the force-applying component of the first side measuring device to return to the initial position, controls the displacement sensor of the first side measuring device to move to the same straight line position as the force-applying component of the second side measuring device on the X-axis, and controls the force-applying component of the second side measuring device to push the side wall of the second display screen;

[0033] S600: Measure the third displacement information of the second display screen using the displacement sensor of the second side measuring device; measure the second force information applied by the force-applying component of the second side measuring device using the pressure sensor of the second side measuring device; and measure the fourth displacement information of the second display screen using the displacement sensor of the first side measuring device.

[0034] S700: The third displacement information, the fourth displacement information, and the second force information are transmitted to the control device. The second movement distance of the second display screen under the preset pressure is calculated, and the hinge virtual position result of the foldable screen phone is obtained by combining the first movement distance in step S400.

[0035] S800: Change the orientation of the foldable phone, re-clamp the first display screen, and repeat steps S100-S700.

[0036] Furthermore, the forms of foldable screen phones include:

[0037] Deployment posture: The first and second displays are fully opened, forming a 180° angle;

[0038] Vertical orientation: The first and second displays are at a 90° angle;

[0039] Overlapping posture: The first and second displays overlap at a 0° angle. The overlapping posture includes:

[0040] First coincident posture: The hinge extends along the X-axis;

[0041] Second coincident posture: The hinge extends along the Y-axis.

[0042] Further testing of foldable phones in their unfolded state included:

[0043] S900, applying a pulling force to the second display screen and measuring hinge misalignment, including:

[0044] S910. Rotate the phone 90° around the Z-axis so that the hinge extends along the Y-axis. Clamp the first display screen through the clamping mechanism and clamp the second display screen through the pull-out clamping mechanism. Install the pull-out component on the force-applying component of the first side measuring device. Connect the pull-out clamping mechanism through the hook-shaped end of the pull-out component and start the control device.

[0045] S920: The fifth displacement information of the second display screen is measured by the displacement sensor of the first side measuring device, and the third force information applied by the force-applying member of the first side measuring device is measured by the pressure sensor of the first side measuring device.

[0046] S930: Transmit the fifth displacement information and the third force information to the control device, and calculate the third moving distance of the second display screen under the preset pressure;

[0047] S940: Rotate the foldable phone 180° around the Z-axis, clamp the first display screen through the clamping mechanism, clamp the second display screen through the pulling clamping mechanism, install the pulling component on the force application component of the second side measuring device, connect the pulling clamping mechanism through the hook end of the pulling component, and start the control device.

[0048] S950: The sixth displacement information of the second display screen is measured by the displacement sensor of the second side measuring device, and the fourth force information applied by the force-applying member of the second side measuring device is measured by the pressure sensor of the second side measuring device.

[0049] S960: The sixth displacement information and the fourth force information are transmitted to the control device, the fourth movement distance of the second display screen under the preset pressure is calculated, and the hinge virtual position result of the foldable screen phone is obtained by combining the third movement distance in step S930.

[0050] Compared with existing technologies, the foldable screen mobile phone hinge misalignment measurement device and method described in this invention have the following advantages:

[0051] The advantage of this technical solution is that it applies force to the second display screen from two directions, and measures the hinge misalignment result by combining the displacement data of the second display screen from both directions. The test is carried out using postures at multiple angles, and a pull-out clamp device connected to the force-applying component is set up to perform a pull-out test on the mobile phone. The measured misalignment result is accurate and the measured data is comprehensive. Attached Figure Description

[0052] Figure 1 This is a perspective view of the measuring device described in an embodiment of the present invention;

[0053] Figure 2 This is a perspective view of the measuring device described in an embodiment of the present invention;

[0054] Figure 3 This is a perspective view of the pull-out clamp device according to an embodiment of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] 100-Fixing clamping device, 200-Measuring device, 210-Push-pull mechanism, 211-Force-applying component, 212-Telescopic assembly, 220-Detection mechanism, 221-Displacement sensor, 222-Pressure sensor, 300-Control device, 400-Pull-out clamping device, 410-Pull-out component, 420-Pull-out clamping mechanism, 421-Clamping assembly, 4211-Clamping plate, 4212-Double-ended stud, 4213-Guide rod, 422-Connecting frame assembly, 4221-Side plate, 4222-Connecting rod, 4223-Fixing component. Detailed Implementation

[0057] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0058] In this invention, the terms "first," "second," "upper," and "lower," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," "upper," or "lower" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. Where the technical solutions of the embodiments can be combined, they are all within the scope of protection claimed by this invention.

[0059] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] like Figure 1 As shown, a hinge misalignment measuring device for a foldable screen phone includes: a fixing clamp device 100, a measuring device 200, and a control device 300. The fixing clamp device 100 clamps the first display screen of the foldable screen phone. Two fixing clamp devices 100 are arranged along the Y-axis direction, and the clamping directions of the two fixing clamp devices 100 are at a 90° angle. Two measuring devices 200 are arranged opposite each other on both sides of the two fixing clamp devices 100, as shown... Figure 2As shown, the measuring device 200 includes a push-pull mechanism 210 and a detection mechanism 220. The push-pull mechanism 210 includes a telescopic component 212 and a force-applying component 211 connected to each other. The telescopic component 212 can move along the X-axis, Y-axis, and Z-axis. The force-applying component 211 is driven to telescopically move relative to the fixing clamp device 100 through the telescopic component 212. The force-applying component 211 can detachably abut against the second display screen of the mobile phone. The detection mechanism 220 moves synchronously with the force-applying component 211, and receives the movement distance information of the second display screen of the mobile phone and the force applied by the force-applying component 211 to the second display screen. The control device 300 controls the operation of the measuring device 200, receives and calculates the movement distance information and the force information, and obtains the hinge misalignment result.

[0061] Two clamping devices 100 clamp at 90° angles, enabling measurements in two directions. A force-applying component 211 is moved via a push-pull assembly to apply force to the foldable phone. A telescopic component 212 moves along the X, Y, and Z axes, as... Figure 1 As shown, the measuring device 200 includes a Y-axis slide rail mechanism that moves along the Y-axis, a Z-axis slide rail mechanism that moves along the Z-axis, and an X-axis moving mechanism that moves along the X-axis, all fixed to the worktable. The mechanisms moving in each direction can be the same type or different types. For example, in this embodiment, the X-axis moving mechanism is a nut-screw drive mechanism combined with a track moving mechanism, while the other two directions use nut-screw drive mechanisms combined with slide rail moving mechanisms. The nut-screw drive mechanism can also be an electric actuator, a hydraulic mechanism, etc. When the same force is applied to both sides of the hinge, there may be different hinge misalignments. Therefore, a measuring device 200 is provided on each side of the fixed clamp device 100 to measure the movement distance of the second display screen from both directions, and the hinge misalignment result is calculated by combining the two movement distances.

[0062] The measuring equipment with the above structure provides accurate results for erroneous measurements and comprehensive data.

[0063] Furthermore, the telescopic assembly 212 includes a motor, a lead screw, and a screw assembly. The lead screw is connected to the main shaft of the motor. The screw assembly includes a nut and a connector connected to the nut. The nut is threadedly connected to the lead screw, and the connector is connected to the force-applying component 211.

[0064] After the measuring device is moved to the measuring position by the X-axis moving mechanism, Y-axis sliding mechanism and Z-axis sliding mechanism, the motor starts and drives the force-applying component 211 to move toward the second display screen through the lead screw and nut assembly mechanism, thus applying force to the second display screen.

[0065] Furthermore, the detection mechanism 220 includes a pressure sensor 222 and a displacement sensor 221. The connecting member and the force-applying member 211 are connected via the pressure sensor 222. The displacement sensor 221 is connected to the connecting member.

[0066] Both the displacement sensor 221 and the force-applying component 211 are mounted on the connector and can move synchronously. The displacement sensor 221 measures the movement distance of the second display screen, which is the movement distance pushed by the force-applying component 211. The movement distance varies depending on the force applied by the force-applying component 211 to the second display screen. Therefore, by receiving this force through the pressure sensor 222, the misalignment of the hinge under different pushing forces can be accurately reflected.

[0067] Furthermore, the foldable screen phone hinge misalignment measuring device also includes a pull clamp device 400, comprising a pull clamping mechanism 420 and a pull member 410. The second display screen is clamped by the pull clamping mechanism 420. One end of the pull member 410 is hook-shaped and detachably hooked to the pull clamping mechanism 420, while the other end is detachably connected to the force-applying member 211.

[0068] The virtual position under the action of the pulling force is calculated by applying a pulling force to the second display screen using a pulling clamp.

[0069] Furthermore, such as Figure 3 As shown, the pull-out clamping mechanism 420 includes a connecting frame assembly 422 and two clamping assemblies 421 connected to the connecting frame assembly 422. The connecting frame assembly 422 includes two opposing connecting plates, each connected at both ends by a connecting rod 4222. The pull-out member 410 is hooked to one of the connecting rods 4222. Both connecting plates can slide along the connecting rod 4222, and are fixed to the connecting rod 4222 by a fixing member 4223. The distance between the two clamping assemblies 421 is adjustable.

[0070] As an example, the pull-out clamping device 400 also clamps the second display screen from both side walls. The clamping assembly 421 includes two clamping plates 4211, which are connected to two opposite side plates 4221 of the connecting frame assembly 422. Threaded holes are provided on the two side plates 4221, and the clamping plates 4211 are threadedly connected to the side plates 4221 by double-ended studs 4212. One end of the double-ended stud 4212 is rotatably fixed to the clamping plate 4211, and the other end passes through the side plate 4221 and is fixed by a nut. Guide rods 4213 are also provided on the clamping plates 4211, which slidably pass through the side plates 4221. Two guide rods 4213 are provided, located on both sides of the double-ended studs 4212 and symmetrically arranged relative to the double-ended studs 4212. When adjusting the clamping plates 4211, the guide rods 4213 ensure that the clamping plates 4211 always move parallel to the side plates 4221. The two side plates 4221 are connected by a connecting rod 4222. The two side plates 4221 can slide on the connecting rod 4222. After adjusting the position of the side plates 4221, they are fixed by the fixing member 4223. During clamping, first adjust the distance L between the two side plates 4221 so that L is slightly smaller than the width W of the second display screen. Then adjust the position of at least one clamping plate 4211 so that the two clamping plates 4211 can tightly clamp the two side walls of the second display screen. The pulling member 410 is installed on the force-applying member 211. The moving measuring device 200 extends from the force-applying member 211 so that the hook-shaped end hooks the outer connecting rod 4222. The motor is started so that the force-applying member 211 moves away from the foldable screen phone, and the force-applying member 211 applies a pulling force to the second display screen.

[0071] Furthermore, the force-applying member 211 is columnar, and an annular groove is provided on the outer periphery of the other end of the force-applying member 211 opposite to the end connected to the connector. The other end of the puller 410 opposite to the hook-shaped end is provided with an insertion hole that mates with the force-applying member 211, and a fixing post that mates with the annular groove is provided in the insertion hole; the fixing post is telescopic.

[0072] As one embodiment, the connection between the puller 410 and the force-applying member 211 can be achieved by a snap-fit ​​method. After the force-applying member 211 is inserted into the insertion hole, it is locked in the annular groove by the fixing post, thereby realizing the connection between the puller 410 and the force-applying member 211.

[0073] Furthermore, the fixing clamp device 100 includes a clamping seat and a fixing clamping mechanism fixed on the clamping seat. The fixing clamping mechanism includes two clamping members, at least one of which is movable relative to the other clamping member.

[0074] The movement of the clamping component can be achieved through a nut and screw transmission mechanism, driven by a motor, or operated manually.

[0075] As another implementation, a fixing clamp device 100 can be provided, with a motor installed in the clamping seat. The clamping mechanism has a base plate, which is connected to the motor spindle. By rotating the clamping mechanism through the motor, the force-applying component 211 applies force to the side walls and end side walls of the second display screen.

[0076] A method for measuring the misalignment of a hinge in a foldable screen phone, characterized in that the misalignment of the hinge is measured using the measuring device described above, the measurement method comprising:

[0077] S100: Fold the first and second displays of the foldable phone into a preset angle, clamp the first display through the clamping mechanism, and start the control device;

[0078] S200: The control device controls the movement of the two measuring devices, so that the force-applying component of the first measuring device and the displacement sensor of the second measuring device are located in the same straight line position in the X-axis direction, and the force-applying component of the first measuring device pushes the side wall of the second display screen.

[0079] S300: Measure the first displacement information of the second display screen using the displacement sensor of the first side measuring device; measure the first force information applied by the force-applying component of the first side measuring device using the pressure sensor of the first side measuring device; and measure the second displacement information of the second display screen using the displacement sensor of the second side measuring device.

[0080] S400: Transmit the first displacement information, the second displacement information, and the first force information to the control device, and calculate the first movement distance of the second display screen under the preset pressure;

[0081] S500, the control device controls the force-applying component of the first side measuring device to return to the initial position, controls the displacement sensor of the first side measuring device to move to the same straight line position as the force-applying component of the second side measuring device on the X-axis, and controls the force-applying component of the second side measuring device to push the side wall of the second display screen;

[0082] S600: Measure the third displacement information of the second display screen using the displacement sensor of the second side measuring device; measure the second force information applied by the force-applying component of the second side measuring device using the pressure sensor of the second side measuring device; and measure the fourth displacement information of the second display screen using the displacement sensor of the first side measuring device.

[0083] S700: The third displacement information, the fourth displacement information, and the second force information are transmitted to the control device. The second movement distance of the second display screen under the preset pressure is calculated, and the hinge virtual position result of the foldable screen phone is obtained by combining the first movement distance in step S400.

[0084] S800: Change the orientation of the foldable phone, re-clamp the first display screen, and repeat steps S100-S700.

[0085] During measurement, the phone is bent at a preset angle and the first display screen is clamped by the clamping mechanism of the fixing fixture. The second display screen extends outside the clamping mechanism, facilitating the application of force to the second display screen. The control device moves the measuring devices on both sides, aligning the first-side force-applying component and the second-side displacement sensor on the same straight line along the X-axis. This allows the second-side displacement sensor to accurately measure the displacement at the applied force location. Simultaneously, the displacement sensor on the first side measures the displacement of the second display screen on the first side. The measured displacement and pressure values ​​from both sides are transmitted to the control device for calculation, thus completing the displacement measurement on the first side. The same method is then used to measure the displacement on the second side. The hinge's play is obtained from the measurements on both sides, avoiding inaccurate results caused by different displacements due to different applied forces on both sides. After measuring one orientation, the orientations of the first and second display screens are changed, and the hinge play is measured using the same method to avoid discrepancies in play due to different orientations.

[0086] Furthermore, the forms of foldable screen phones include:

[0087] Deployment posture: The first and second displays are fully opened, forming a 180° angle;

[0088] Vertical orientation: The first and second displays are at a 90° angle;

[0089] Overlapping posture: The first and second displays overlap at a 0° angle. The overlapping posture includes:

[0090] First coincident posture: The hinge extends along the X-axis;

[0091] Second coincident posture: The hinge extends along the Y-axis.

[0092] Measurements can be performed at multiple angles as required, preferably at 0°, 90°, and 180° angles. Additionally, in the overlapping posture, the phone can be rotated 90° for measurement; that is, force is applied to both sides of the second display screen for measurement, and then force is applied to the end of the second display screen for measurement. When transitioning from the first overlapping posture to the second overlapping posture, the phone is detached from the fixing fixture along the X-axis and then clamped and measured using the fixing bracket along the Y-axis.

[0093] All the above measurements were taken under pressure applied to the second display screen. When tension was applied to both the first and second display screens, the hinge also exhibited play-off movement.

[0094] Further testing of foldable phones in their unfolded state included:

[0095] S900, applying a pulling force to the second display screen and measuring hinge misalignment, including:

[0096] S910. Rotate the phone 90° around the Z-axis so that the hinge extends along the Y-axis. Clamp the first display screen through the clamping mechanism and clamp the second display screen through the pull-out clamping mechanism. Install the pull-out component on the force-applying component of the first side measuring device. Connect the pull-out clamping mechanism through the hook-shaped end of the pull-out component and start the control device.

[0097] S920: The fifth displacement information of the second display screen is measured by the displacement sensor of the first side measuring device, and the third force information applied by the force-applying member of the first side measuring device is measured by the pressure sensor of the first side measuring device.

[0098] S930: Transmit the fifth displacement information and the third force information to the control device, and calculate the third moving distance of the second display screen under the preset pressure;

[0099] S940: Rotate the foldable phone 180° around the Z-axis, clamp the first display screen through the clamping mechanism, clamp the second display screen through the pulling clamping mechanism, install the pulling component on the force application component of the second side measuring device, connect the pulling clamping mechanism through the hook end of the pulling component, and start the control device.

[0100] S950: The sixth displacement information of the second display screen is measured by the displacement sensor of the second side measuring device, and the fourth force information applied by the force-applying member of the second side measuring device is measured by the pressure sensor of the second side measuring device.

[0101] S960: The sixth displacement information and the fourth force information are transmitted to the control device, the fourth movement distance of the second display screen under the preset pressure is calculated, and the hinge virtual position result of the foldable screen phone is obtained by combining the third movement distance in step S930.

[0102] The measurement in step S900 achieves the measurement of the hinge displacement of the foldable phone under tension in its unfolded posture. Furthermore, the measurement of hinge displacement is achieved under various phone postures, obtaining more comprehensive data.

[0103] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A device for measuring the misalignment of a hinge in a foldable screen mobile phone, characterized in that, include: A fixing clamp device (100) is provided to hold the first display screen of a foldable screen mobile phone. Two fixing clamp devices (100) are provided along the Y-axis direction, and the clamping directions of the two fixing clamp devices (100) are at a 90° angle. A measuring device (200) is provided on both sides of the two fixing clamp devices (100), the measuring device (200) comprising: The push-pull mechanism (210) includes a telescopic assembly (212) and a force-applying member (211) connected to each other. The telescopic assembly (212) is movable along the X-axis, Y-axis and Z-axis. The force-applying member (211) is driven to telescopically move relative to the fixed clamp device (100) through the telescopic assembly (212). The force-applying member (211) is detachably abutted against the second display screen of the mobile phone. The X-axis slide rail mechanism is set along the X-axis direction; The Y-axis slide rail mechanism is set along the Y-axis direction; The Z-axis slide rail mechanism is set along the Z-axis direction; The measuring device is moved to the measuring position using the X-axis sliding mechanism, Y-axis sliding mechanism, and Z-axis sliding mechanism. The detection mechanism (220) moves synchronously with the force-applying component (211) and receives the movement distance information of the second display screen of the mobile phone and the force information applied by the force-applying component (211) to the second display screen; The control device (300) controls the operation of the measuring device (200), receives and calculates the movement distance information and force information, and obtains the hinge virtual position result; A pull-out clamping device (400) includes: A pull-out clamping mechanism (420) clamps the second display screen; The pulling member (410) has a hook-shaped end that is detachably hooked to the pulling clamping mechanism (420), and the other end is detachably connected to the force-applying member (211). Methods for measuring hinge misalignment in foldable phones include: S100: Fold the first and second displays of the foldable phone into a preset angle, clamp the first display through the clamping mechanism, and start the control device; S200: The control device controls the movement of the two measuring devices, so that the force-applying component of the first measuring device and the displacement sensor of the second measuring device are located in the same straight line position in the X-axis direction, and the force-applying component of the first measuring device pushes the side wall of the second display screen. S300: Measure the first displacement information of the second display screen using the displacement sensor of the first side measuring device; measure the first force information applied by the force-applying component of the first side measuring device using the pressure sensor of the first side measuring device; and measure the second displacement information of the second display screen using the displacement sensor of the second side measuring device. S400: Transmit the first displacement information, the second displacement information, and the first force information to the control device, and calculate the first movement distance of the second display screen under the preset pressure; S500, the control device controls the force-applying component of the first side measuring device to return to the initial position, controls the displacement sensor of the first side measuring device to move to the same straight line position as the force-applying component of the second side measuring device on the X-axis, and controls the force-applying component of the second side measuring device to push the side wall of the second display screen; S600: Measure the third displacement information of the second display screen using the displacement sensor of the second side measuring device; measure the second force information applied by the force-applying component of the second side measuring device using the pressure sensor of the second side measuring device; and measure the fourth displacement information of the second display screen using the displacement sensor of the first side measuring device. S700: The third displacement information, the fourth displacement information, and the second force information are transmitted to the control device. The second movement distance of the second display screen under the preset pressure is calculated, and the hinge virtual position result of the foldable screen phone is obtained by combining the first movement distance in step S400. S800: Change the orientation of the foldable phone, re-clamp the first display screen, and repeat steps S100-S700. S900: Apply tension to the second display screen and measure the hinge misalignment.

2. The hinge misalignment measuring device for foldable screen mobile phones according to claim 1, characterized in that, The telescopic assembly (212) includes a motor, a lead screw, and a screw assembly. The lead screw is connected to the main shaft of the motor. The screw assembly includes a nut and a connector connected to the nut. The nut is threadedly connected to the lead screw. The connector is connected to the force-applying component (211).

3. The hinge misalignment measuring device for foldable screen mobile phones according to claim 2, characterized in that, The detection mechanism (220) includes a pressure sensor (222) and a displacement sensor (221); The connector and the force-applying component (211) are connected via the pressure sensor (222); The displacement sensor (221) is connected to the connector.

4. The hinge misalignment measuring device for foldable screen mobile phones according to claim 3, characterized in that, The pull-out clamping mechanism (420) includes a connecting frame assembly (422) and two clamping assemblies (421) connected to the connecting frame; The connecting frame assembly (422) includes two oppositely arranged connecting plates, which are connected at both ends by a connecting rod (4222), and the puller (410) is hooked to one of the connecting rods (4222); Both of the connecting plates can slide along the connecting rod (4222), and the connecting plates are fixed to the connecting rod (4222) by the fixing member (4223); The distance between the two clamping components (421) is adjustable.

5. The hinge misalignment measuring device for foldable screen mobile phones according to claim 4, characterized in that, The force-applying member (211) is columnar, and an annular groove is provided on the outer periphery of the force-applying member (211) opposite to the end connected to the connector. The puller (410) has an insertion hole at the other end opposite to the hook end that mates with the force-applying member (211), and a fixing post that mates with the annular groove is provided in the insertion hole. The fixing post is telescopic.

6. The hinge misalignment measuring device for foldable screen mobile phones according to claim 1, characterized in that, The fixing clamp device (100) includes a clamping seat and a fixing clamping mechanism fixed on the clamping seat; The fixed clamping mechanism includes two clamping members, at least one of which is movable relative to the other clamping member.

7. The hinge misalignment measuring device for foldable screen mobile phones according to claim 6, characterized in that, The forms of foldable screen phones include: Deployment posture: The first and second displays are fully opened, forming a 180° angle; Vertical orientation: The first and second displays are at a 90° angle; Overlapping posture: The first and second displays overlap at a 0° angle. The overlapping posture includes: First coincident posture: The hinge extends along the X-axis; Second coincident posture: The hinge extends along the Y-axis.

8. The hinge misalignment measuring device for foldable screen mobile phones according to claim 7, characterized in that, In step S900, the test of the foldable phone in its unfolded position also includes: S910. Rotate the phone 90° around the Z-axis so that the hinge extends along the Y-axis. Clamp the first display screen through the clamping mechanism and clamp the second display screen through the pull-out clamping mechanism. Install the pull-out component on the force-applying component of the first side measuring device. Connect the pull-out clamping mechanism through the hook-shaped end of the pull-out component and start the control device. S920: The fifth displacement information of the second display screen is measured by the displacement sensor of the first side measuring device, and the third force information applied by the force-applying member of the first side measuring device is measured by the pressure sensor of the first side measuring device. S930: Transmit the fifth displacement information and the third force information to the control device, and calculate the third moving distance of the second display screen under the preset pressure; S940: Rotate the foldable phone 180° around the Z-axis, clamp the first display screen through the clamping mechanism, clamp the second display screen through the pulling clamping mechanism, install the pulling component on the force application component of the second side measuring device, connect the pulling clamping mechanism through the hook end of the pulling component, and start the control device. S950: The sixth displacement information of the second display screen is measured by the displacement sensor of the second side measuring device, and the fourth force information applied by the force-applying member of the second side measuring device is measured by the pressure sensor of the second side measuring device. S960: The sixth displacement information and the fourth force information are transmitted to the control device, the fourth movement distance of the second display screen under the preset pressure is calculated, and the hinge virtual position result of the foldable screen phone is obtained by combining the third movement distance in step S930.

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