Torsion test equipment and control method thereof

Abstract

The invention discloses torsion testing equipment and a control method of the torsion testing equipment, and relates to the technical field of intelligent wearable equipment, the torsion testing equipment comprises a mounting rack, a positioning weighing device and a rotation testing device, the positioning weighing device comprises a positioning structure and a weighing sensor, the weighing sensor and the mounting rack are relatively fixed, and the rotation testing device is connected with the positioning structure; the positioning structure is movably installed in the vertical direction and located above the weighing sensor, the positioning structure is used for placing a to-be-detected smart watch, and in the moving stroke of the positioning structure, the positioning structure has an assembling position spaced from the weighing sensor and a weighing position making contact with the weighing sensor; the rotation testing device comprises a clamping structure and a rotation driving mechanism, the rotation driving mechanism is in driving connection with the clamping structure, the rotation driving mechanism is connected with the dynamic torsion sensor, when the positioning structure is located at the weighing position, the clamping structure clamps a knob key of the smart watch, and the clamping structure is connected with the counterweight piece. Therefore, more accurate data can be obtained based on a specific load condition.

Description

Technical Field

[0001] This invention relates to the field of smart wearable device technology, and in particular to a torque testing device and a control method for the torque testing device. Background Technology

[0002] Traditional testing methods for damping smartwatch knobs primarily rely on manual operation; however, this approach has significant limitations. First, manual observation cannot effectively capture and reflect fluctuations in the dynamic torque of the knob, making it difficult to identify abnormal fluctuations during the experiment. Second, because the testing process depends on human perception and manual operation, the error in the test results is often large, failing to meet the high precision requirements of modern precision manufacturing. Summary of the Invention

[0003] The main objective of this invention is to provide a torque testing device and a control method for the torque testing device, which can confirm the torque fluctuation value and load condition of the knob key during the testing process, thereby obtaining more accurate test results and reducing test errors.

[0004] To achieve the above objectives, the present invention proposes a torque testing device for testing the knob button of a smartwatch, the torque testing device comprising: Mounting rack; A positioning and weighing device is mounted on the mounting frame. The device includes a positioning structure and a weighing sensor. The weighing sensor is fixed relative to the mounting frame. The positioning structure is movably mounted in the vertical direction and is located above the weighing sensor. The positioning structure is used to accommodate the smartwatch to be tested. During its movement, the positioning structure has an assembly position spaced from the weighing sensor and a weighing position in contact with the weighing sensor. A rotation testing device includes a clamping structure and a rotation drive mechanism. The rotation drive mechanism is located on the mounting frame and is drivenly connected to the clamping structure to drive the clamping structure to rotate along an axis extending in the vertical direction. The rotation drive mechanism is connected to a dynamic torque sensor. When the positioning structure is in the weighing position, the clamping structure is used to clamp the knob of a smartwatch. The clamping structure is connected to a counterweight.

[0005] In one embodiment, the positioning structure includes: The base is movably installed onto the mounting bracket in the vertical direction. One side of the base is provided with a receiving groove for placing the smartwatch to be tested. A pressure plate, detachably mounted on the base, at least a portion of which is capable of supporting a smartwatch located within the receiving slot; and, The magnetic attraction structure includes a first magnetic attraction component and a second magnetic attraction component that magnetically engage, with the first magnetic attraction component and the second magnetic attraction component respectively disposed on the base and the pressure plate.

[0006] In one embodiment, the positioning structure further includes: Two first limiting components are respectively disposed on opposite sides of the receiving groove. Each first limiting component includes two first limiting blocks disposed opposite each other. The two first limiting blocks are used to jointly limit the watch band of the smartwatch; and / or, Two second limiting blocks are respectively disposed on opposite sides of the receiving groove, and each second limiting block is detachably connected to the base for use with the dial of the smartwatch.

[0007] In one embodiment, the positioning and weighing device further includes: A base, one side of which is used to mount the smartwatch to be tested, the base being slidably engaged with the mounting bracket via a guide rail structure; A bracket, fixedly connected to the base, the bracket having a downward-facing abutment surface; and, The driving part is fixed relative to the mounting bracket. The driving part has a driving end that is movably arranged in the vertical direction. The driving end can contact the abutment surface to drive the bracket to move upward, or separate from the bracket so that the bracket drives the base to move downward under the action of gravity.

[0008] In one embodiment, the positioning and weighing device further includes a screw connector, the upper end of which is threaded onto the base, and the lower end of which can contact the weighing sensor. By adjusting the mating length between the screw connector and the base, the relative position of the base and the rotating testing device in the vertical direction can be adjusted.

[0009] In one embodiment, the clamping structure includes two jaws arranged opposite each other in a horizontal direction. The upper end of each jaw forms a clamping part. The distance between the two clamping parts is adjustable. Each clamping part has a groove on its side facing the other clamping part. The upper sidewall of each groove has a notch that connects to its opening. The inner sidewalls of the two grooves are used to jointly abut against the peripheral side of the smartwatch's knob button. The two notches are used for the smartwatch's knob button shaft to pass through.

[0010] In one embodiment, the lower ends of the two grippers are connected by an elastic element, and the side of each gripper facing away from the other gripping part is arranged in an arc shape; The clamping structure further includes two connectors, which are respectively disposed on both sides of the two grippers and connected to the mounting bracket. The two connectors have a travel distance that is close to or away from the grippers. Each connector has a roller at one end facing the corresponding gripper. The roller is rotatably mounted and is used to contact or separate from the side of the gripper corresponding to the connector during the movement of the connector.

[0011] In one embodiment, the rotation testing device further includes a support platform, the upper end of which is used for mounting the clamping structure, and the lower end of which is connected to the rotation drive mechanism via a universal joint.

[0012] In one embodiment, the universal joint has an annular curved surface; The rotation testing device further includes two side push blocks located on opposite sides of the universal joint. Each side push block has an arc-shaped surface on its end face facing the universal joint. The two side push blocks have a travel distance that moves closer to or further away from the universal joint. During the movement, each side push block can cause the arc-shaped surface to abut against the annular curved surface to push the universal joint to deflect, or cause the arc-shaped surface to separate from the annular curved surface, so that the universal joint can be driven to rotate by the rotation drive mechanism.

[0013] In one embodiment, the rotational testing device further includes a support plate, which is connected to the support platform via a connecting rod; The counterweight can be detachably installed on the support plate.

[0014] In one embodiment, the rotary drive mechanism is connected to the clamping structure via a coupling, and the dynamic torque sensor cooperates with the coupling; and / or, The mounting bracket is equipped with a photoelectric switch, which is used to detect the number of rotations of the rotary drive mechanism.

[0015] This invention also proposes a control method for a torque testing device. The torque testing device includes at least a mounting frame, a positioning and weighing device, and a rotation testing device. The positioning and weighing device is mounted on the mounting frame and includes a positioning structure and a weighing sensor. The weighing sensor is fixed relative to the mounting frame. The positioning structure is movably mounted in the vertical direction and is located above the weighing sensor. The positioning structure is used to place the smartwatch to be tested. During the movement of the positioning structure, it has an assembly position spaced apart from the weighing sensor and a weighing position in contact with the weighing sensor. The rotation testing device includes a clamping structure and a rotation drive mechanism. The rotation drive mechanism is mounted on the mounting frame and is drivenly connected to the clamping structure to drive the clamping structure to rotate along an axis extending in the vertical direction. The rotation drive mechanism is connected to a dynamic torque sensor. When the positioning structure is in the weighing position, the clamping structure is used to clamp the knob of the smartwatch. The clamping structure is connected to a counterweight. The control method for the torque testing equipment includes the following steps: After the positioning structure carrying the smartwatch to be tested comes into contact with the weighing sensor, the value of the weighing sensor is obtained as the initial value. After the clamping structure with the counterweight is clamped and fixed to the knob of the smartwatch, the value of the weighing sensor is obtained as the measurement value. Calculate the difference between the measured value and the initial value to obtain the first observation value; If the first observed value meets the first preset condition, control the rotary drive mechanism to work in order to obtain multiple torque test values ​​measured by rotating multiple times; The average value of the multiple torque test values ​​is obtained by filtering and calculating the average value to obtain the second observation value; The second observation value is compared with the second preset condition to confirm the detection result.

[0016] The technical solution of this invention involves mounting the smartwatch to be tested onto a positioning structure, causing the positioning structure to contact a load cell for initial weight detection. A clamping structure connects to a mating component. Once the clamping structure contacts the knob, a rotation drive mechanism drives the clamping structure to rotate the knob. A dynamic torque sensor measures the rotational torque in real time, allowing testing based on specific load conditions. Increased load causes changes in the load sensor's reading, and the difference from the initial weight can be used to monitor the actual applied load. After the rotation drive mechanism completes a specified number of rotations, the dynamic torque sensor's reading is obtained. Because the load cell remains in contact with the positioning structure throughout the test, any issues such as a falling counterweight, abnormal counterweight weight, or separation of the clamping structure from the knob will be reflected in the load sensor's readings, thus enabling monitoring of anomalies during testing. This device, through the combined use of a load cell and a dynamic torque sensor, ensures stability during smartwatch testing and improves the accuracy of knob testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a structure of an embodiment of the torque testing device provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the positioning weighing device; Figure 3 for Figure 1 Schematic diagram of the rotating testing device; Figure 4 for Figure 3 A schematic diagram of the clamping structure; Figure 5 This is a flowchart illustrating an embodiment of the control method for the torque testing device provided by the present invention.

[0019] Explanation of icon numbers: 100. Torque testing equipment; 1. Mounting bracket; 2. Positioning and weighing device; 21. Positioning structure; 211. Base; 2110. Receiving groove; 212. Pressure plate; 213. First limiting block; 214. Second limiting block; 215. Bracket; 2150. Supporting surface; 216. Drive unit; 217. Screw connector; 22. Weighing sensor; 23. Guide rail structure; 24. Fixing base; 3. Rotation testing device; 31. Clamp 311. Holding structure; 3110. Clamping part; 3111. Groove; 3112. Notch; 312. Connector; 313. Roller; 32. Rotary drive mechanism; 33. Support platform; 34. Universal joint; 35. Side push block; 36. Side push cylinder; 37. Support plate; 38. Coupling; 4. Counterweight; 5. Dynamic torque sensor; 6. Photoelectric switch; 60. Support bracket; 7. Touch screen; 8. Buzzer.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are 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" or "second" may explicitly or implicitly include at least one of those features. Additionally, 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. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] In testing the damping characteristics of smartwatch knobs, traditional methods rely primarily on manual operation. This is not only inefficient but also fails to accurately capture torque fluctuations during dynamic processes, leading to significant errors in test results and failing to meet the current demands for high-precision testing. As smart wearable devices increasingly demand higher button feel and durability, more stringent standards are being set for the accuracy and stability of the testing process.

[0025] To address this issue, this application presents a novel testing device that can detect and provide feedback on the reverse torque fluctuation value of the button and its actual load value during the testing process under specific load conditions, thereby improving the reliability and accuracy of smartwatch knob button testing.

[0026] Please refer to Figures 1 to 3 The torque testing device 100 includes a mounting frame 1, a positioning and weighing device 2, and a rotation testing device 3. The positioning and weighing device 2 is mounted on the mounting frame 1 and includes a positioning structure 21 and a weighing sensor 22. The weighing sensor 22 is fixed relative to the mounting frame 1. The positioning structure 21 is movably mounted in the vertical direction and is located above the weighing sensor 22. The positioning structure 21 is used to place the smartwatch to be tested. During the movement of the positioning structure 21, it has an assembly position spaced apart from the weighing sensor 22 and a weighing position in contact with the weighing sensor 22. The rotation testing device 3 includes a clamping structure 31 and a rotation drive mechanism 32. The rotation drive mechanism 32 is mounted on the mounting frame 1 and is drivenly connected to the clamping structure 31 to drive the clamping structure 31 to rotate along an axis extending in the vertical direction. The rotation drive mechanism 32 is connected to a dynamic torque sensor 5. When the positioning structure 21 is in the weighing position, the clamping structure 31 is used to clamp the knob of the smartwatch. The clamping structure 31 is connected to a counterweight 4.

[0027] In this invention, after the smartwatch to be tested is installed on the positioning structure 21, the positioning structure 21 contacts the weighing sensor 22 for initial weight detection. The clamping structure 31 connects to the mating parts. After the clamping structure 31 contacts the knob, the rotation drive mechanism 32 drives the clamping structure 31 to rotate the knob. The dynamic torque sensor 5 measures the rotational torque in real time, allowing testing based on specific load conditions. Increased load causes changes in the load reading of the weighing sensor 22, and the actual applied load value can be monitored based on the difference from the initial weight. After the rotation drive mechanism 32 completes a specified number of rotations, the detection value of the dynamic torque sensor 5 is obtained. Since the weighing sensor 22 remains in contact with the positioning structure 21 throughout the test, any issues such as the counterweight 4 falling, abnormal weight of the counterweight 4, or separation of the clamping structure 31 from the knob will be reflected in the load sensor 22's detection result, thus enabling monitoring of abnormalities during the test. This device, through the cooperation of the weighing sensor 22 and the dynamic torque sensor, ensures the stability of the smartwatch during testing and improves the accuracy of the smartwatch's knob test.

[0028] The specific structural form of the rotary drive mechanism 32 is not limited. In some embodiments, a servo motor driver is selected, which has a high-precision, high-response closed-loop control motor system and can provide high-precision, adjustable driving force.

[0029] The specific structural form of the positioning structure 21 is not limited; it can be positioned by mechanical clamping or by vacuum adsorption. In this embodiment, please refer to... Figure 2 The positioning structure 21 includes a base 211, a pressure plate 212, and a magnetic structure. The base 211 is movably mounted to the mounting bracket 1 in the vertical direction. One side of the base 211 is provided with a receiving groove 2110 for placing the smartwatch to be tested. The receiving groove 2110 should be contoured to the smartwatch to prevent the smartwatch from moving within the receiving groove 2110. The opening of the receiving groove 2110 faces sideways, meaning the smartwatch dial is vertically placed within the receiving groove 2110. The pressure plate 212 is detachably mounted on the base 211, and at least a portion of the pressure plate 212 can hold the smartwatch within the receiving groove 2110. The magnetic structure includes a first magnetic element and a second magnetic element that magnetically engage, with the first magnetic element and the second magnetic element respectively disposed on the base 211 and the pressure plate 212. The pressure plate 212 and the base 211 are connected by a magnetic structure. The pressure plate 212 can be removed from the base 211 manually to expose the receiving slot 2110, so as to assemble the smart watch. After the pressure plate 212 is re-magnetically fixed to the base 211, it can prevent the smart watch from falling out of the receiving slot 2110 when the watch face is placed vertically.

[0030] The first and second magnetic components can be set as magnets with opposite polarities, or a magnet can be set on the pressure plate 212 as the first magnetic component, and the base 211 can be made of metal so as to directly serve as the second magnetic component.

[0031] It should be noted that after the pressure plate 212 and the base 211 are engaged, the relative position of the pressure plate 212 and the base 211 is not limited. The pressure plate 212 can completely or partially cover the upper side of the receiving groove 2110, or the pressure plate 212 can partially extend into the receiving groove 2110.

[0032] To enhance the constraint on the smartwatch and ensure its fixed position during testing, in some embodiments, the positioning structure 21 further includes two first limiting components, respectively disposed on opposite sides of the receiving groove 2110. Each first limiting component includes two opposing first limiting blocks 213, which together constrain the smartwatch strap. During testing, the edge of the smartwatch dial engages with the inner wall of the receiving groove 2110, and the two straps are constrained by the two first limiting blocks 213, preventing the smartwatch from rotating left or right within the receiving groove 2110. Specifically, the annular structure connecting the strap and the dial can be fitted over the outer side of the corresponding two first limiting blocks 213 to constrain the position.

[0033] In some embodiments, the positioning structure 21 further includes two second limiting blocks 214, which are respectively disposed on opposite sides of the receiving groove 2110. Each second limiting block 214 is detachably connected to the base 211 for engaging with the dial of the smartwatch. When the smartwatch is being tested, the edge of the smartwatch dial engages with the inner wall of the receiving groove 2110, and the two lugs on the dial for connecting the watch strap are respectively limited by the two second limiting blocks 214, preventing the smartwatch from deflecting left or right within the receiving groove 2110.

[0034] The smartwatch consists of a watch face and a detachable watch strap. In this embodiment, when the smartwatch has a watch strap installed, multiple first limiting blocks 213 cooperate with relevant parts of the watch strap for installation and positioning. At this time, the second limiting blocks 214 are removed to avoid obstruction. When the smartwatch has only a watch face and no watch strap installed, the two second limiting blocks 214 are positioned between the two first limiting blocks 213 in one of the limiting components, cooperating with the smartwatch's watch face for installation and positioning. In this case, the two second limiting blocks 214 do not contact the smartwatch and do not function.

[0035] The function of the weighing sensor 22 is to detect the weight of the smartwatch and the positioning structure 21. Therefore, when the positioning structure 21 is in the weighing position, it should be protected from external forces to avoid inaccurate detection values ​​by the weighing sensor 22. In this embodiment, the positioning weighing device 2 also includes a base 211, a bracket 215, and a drive unit 216. One side of the base 211 is used to place the smartwatch to be tested. The base 211 is slidably engaged with the mounting frame 1 via a guide rail structure 23. A vertically extending slide rail is provided on the mounting frame 1, and a sliding groove is provided on the base 211 to maintain a sliding engagement with the slide rail. The bracket 215 is fixedly connected to the base 211 and has a downward-facing abutment surface 2150. Considering the load-bearing function of the base 211 and its engagement with the guide rail, the bracket 215 is used for connection, and the movement of the bracket 215 indirectly drives the movement of the base 211. The drive unit 216 is fixed relative to the mounting bracket 1. The drive unit 216 has a drive end that is movable in the vertical direction. During the smartwatch installation stage, the drive end can contact the abutment surface 2150 to drive the bracket 215 to move upward, thereby ensuring that the base 211 is separated from the load cell 22. After the smartwatch is installed, the drive end quickly falls back. Based on the guide rail structure 23 of the base 211 and the mounting bracket 1, the bracket 215 will separate from the drive end when the drive end falls back quickly. Then, under the action of gravity, it overcomes the sliding friction force that cooperates with the guide rail, and finally drives the base 211 to fall downward under the action of gravity and contact the load cell 22. Therefore, the detection value of the load cell 22 will not be interfered with by the starter.

[0036] Specifically, the drive unit 216 can be configured as a cylinder, with a push plate added to the cylinder rod to contact and engage with the abutment surface 2150. Specifically, the cylinder is located inside the bracket 215, horizontally spaced from the base 211, thus making the overall structure more compact.

[0037] Considering the differences in size and shape of smartwatches of different specifications, the base 211 includes a fixed plate and a detachable plate for easy adaptation. The fixed plate and the detachable plate are locked together by screws, so that they can be assembled and disassembled. The fixed base 24 is connected to the mounting bracket 1 through the guide rail structure 23. The detachable plate is provided with a receiving groove 2110. The pressure plate 212 is universal. When changing different testing products, the detachable plate can be removed and replaced.

[0038] Considering manufacturing errors and variations in smartwatch specifications, the position of the knob may shift after installation on different smartwatches, potentially causing the clamping structure 31 to malfunction and fail to engage properly with the knob. Therefore, the positioning and weighing device 2 also includes a screw connector 217. The upper end of the screw connector 217 is threaded onto the base 211, and the lower end of the screw connector 217 can contact the load cell 22. By adjusting the engagement length between the screw connector 217 and the base 211, the relative position of the base 211 and the rotating testing device 3 in the vertical direction can be adjusted. Specifically, the base 211 is raised by the screw connector 217, with the nut of the screw connector 217 on the lower side and the threaded end facing upwards. Rotating the screw connector 217 changes the gap between the nut and the base 211, thereby adjusting the relative position of the lower edge of the base 211 and the mounting bracket 1 when the screw connector 217 contacts the load cell 22.

[0039] This adjustment method has a simple structure and offers good flexibility and practicality. The threaded fit itself has a good locking and anti-rotation function, ensuring the stability and reliability of the equipment.

[0040] When the base 211 is composed of a fixed plate and a detachable plate, the screw connector 217 should be installed on the fixed plate.

[0041] Specifically, the positioning and weighing device 2 is installed on the fixed base 24. The fixed base 24 is set as an L-shaped or arched structure to facilitate adjustment of the perpendicularity with the clamping structure 31. The bottom of the fixed base 24 is fixed to one of the plates of the mounting frame 1 by screws. The weighing sensor 22 and the positioning structure 21 are both set on the fixed base 24, which makes the equipment modular and convenient for debugging and maintenance.

[0042] This invention does not limit the specific form of the clamping structure 31; please refer to [the relevant documentation]. Figures 3 to 4The clamping structure 31 includes two grippers 311 arranged horizontally opposite each other. The upper end of each gripper 311 forms a clamping portion 3110. The distance between the two clamping portions 3110 is adjustable. Each clamping portion 3110 has a groove 3111 on its side facing the other clamping portion 3110. The upper sidewall of each groove 3111 has a notch 3112 communicating with its opening. The inner sidewalls of the two grooves 3111 are used to jointly abut against the peripheral side of the smartwatch's knob button. The two notches 3112 are used for the smartwatch's knob button shaft to pass through. In this structure, on the one hand, the two clamping portions 3110 can jointly clamp the peripheral side of the knob button, thereby abutting the knob button and driving it to rotate synchronously. On the other hand, the engagement of the notch 3112 and the groove 3111 enables the knob button to be mounted. The knob key consists of a shaft and a disc. The shaft connects the disc and the dial. The disc is defined by two grooves 3111. The shaft can pass through the channel defined by two notches 3112. Even if the relative position of the clamping structure 31 and the disc changes due to factors such as eccentricity or improper assembly during rotation, the disc can be prevented from disengaging from the clamping part 3110 due to the mounting of the shaft, thus providing better clamping stability.

[0043] It should be understood that the notch 3112 should be arc-shaped to match the shape of the shaft. The inner wall of the groove 3111 should also be provided with an arc-shaped structure or an anti-slip structure to cooperate with the disc.

[0044] The two grippers 311 can be driven by a bidirectional screw, pneumatic fingers, or other structures. In this embodiment, the lower ends of the two grippers 311 are connected by an elastic element, and the middle parts of the two grippers 311 are rotatably mounted via a pivot. Thus, when the lower ends of the two grippers 311 are driven, the upper ends of the two grippers can open based on the lever principle. Specifically, the side of each gripper 311 facing away from the other gripping part 3110 is arc-shaped. The gripping structure 31 also includes two connecting members 312, which are respectively located on both sides of the two grippers 311 and connected to the mounting bracket 1. The two connecting members 312 have a travel distance that moves closer to or further away from the grippers 311. Each connecting member 312 has a roller 313 at one end facing the corresponding gripper 311. The roller 313 is rotatably mounted and used to contact or separate from the corresponding side of the gripper 311 during the movement of the connecting member 312. The two connecting members 312 are connected by a finger cylinder. Initially, both connectors 312 are far from the two grippers 311. At this time, the roller 313 is not in contact with the grippers 311, and the gripping portions 3110 of the two grippers 311 naturally lock together under the action of elasticity, thus maintaining the gripping state. When the two connectors 312 are driven to move closer to each other, the roller 313 gradually contacts the arc-shaped side of the grippers 311, and can drive the lower end of the grippers 311 to swing based on the rolling engagement, thereby causing the gripping portions 3110 of the two grippers 311 to separate.

[0045] Based on the above embodiments, when the positioning structure 21 is in the assembly position, the smart watch to be tested is installed, while keeping the clamping parts 3110 of the two grippers 311 in a separated state. The positioning structure 21 drives the smart watch to the weighing position, and the disc of the knob can be positioned between the two clamping parts 3110, driving the two connecting parts 312 to move away from each other, so that the roller 313 can be completely separated from the grippers 311, thereby allowing the two clamping parts 3110 to automatically clamp the disc under the action of elasticity.

[0046] During testing, the rotary drive mechanism 32 needs to rotate the clamping structure 31 multiple times. Ideally, the clamping structure 31, the rotary drive mechanism 32, and the knob should always remain coaxial. However, due to assembly errors, machining errors, and other factors, the three may not be coaxial. This can cause the clamping structure 31 to easily detach from the knob due to differences in the rotation axes during the rotary drive, thus losing its clamping effect. Therefore, the rotary testing device 3 also includes a support platform 33. The upper surface of the support platform 33 is for mounting the clamping structure 31, and the lower end of the support platform 33 is connected to the rotary drive mechanism 32 via a universal joint 34. The universal joint 34 can adapt to the transmission requirements of non-linear connections caused by installation errors, etc. The use of the universal joint 34 allows the support platform 33 to be adjusted within a certain range. Even if there are slight angular deviations between the rotary drive mechanism 32, the clamping structure 31, and the knob, they can be compensated for by the adaptive adjustment of the universal joint 34. This ensures that the clamping structure 31 and the knob remain in contact during the test, guaranteeing the stability of the testing process.

[0047] Based on the above embodiments, before the clamping structure 31 is assembled with the knob key, due to the structural characteristics of the universal joint 34, the clamping structure 31 may not be able to maintain a specific angle to engage with the knob key. Therefore, please refer to... Figure 4The universal joint 34 has an annular curved surface; the rotation testing device 3 also includes two side push blocks 35, which are located on opposite sides of the universal joint 34. The two side push blocks 35 are driven by two side push cylinders 36, and each side push block 35 has an arc-shaped surface on its end face facing the universal joint 34. The two side push blocks 35 have a stroke that allows them to move closer to or further away from the universal joint 34. Before testing, the two side push blocks 35 are driven by the two side push cylinders 36. The arc-shaped surface and the annular curved surface abut against each other to push the universal joint 34 to deflect, thereby driving the universal joint 34 to perform concentric correction. After the universal joint 34 is corrected, based on the cooperation relationship with the side push block 35, the bearing platform 33 can remain fixed. After the clamping structure 31 and the knob key are clamped and engaged, the two side push blocks 35 retract in a direction away from the universal joint 34, so that the arc-shaped surface and the annular curved surface are completely separated, so that the side push blocks 35 will not interfere with the universal joint 34, and the universal joint 34 can be driven to rotate flexibly by the rotary drive mechanism 32.

[0048] Based on the above embodiments, the rotation testing device 3 also includes a support plate 37, which is connected to the support platform 33 via a connecting rod; the counterweight 4 is detachably mounted on the support plate 37. By detachably mounting the counterweight 4 on the support plate 37, the weight of the counterweight can be flexibly adjusted according to actual testing needs. Different testing scenarios may require different load sizes, and this design makes the rotation testing device 3 more adaptable and flexible. For example, when performing tests with low torque requirements, the number of counterweights 4 can be reduced or lighter counterweights 4 can be used; while when performing high torque tests, the number of counterweights 4 can be increased or heavier counterweights 4 can be installed. The support plate 37 is connected to the support platform 33 via a connecting rod, and this connection method ensures the stability of the counterweight 4. During the rotation test, the support platform 33 moves with the rotation of the universal joint 34, and the connecting rod can effectively connect the support plate 37 and the support platform 33 together, so that the counterweight 4 can move synchronously with the support platform 33, avoiding swaying or displacement, thereby ensuring the accuracy of the test results.

[0049] To prevent the counterweight 4 from falling off during rotation with the support platform 33, the connecting rod can pass through the corresponding through hole on the counterweight 4.

[0050] Based on the testing principle of this application, to avoid the driving connection between the rotary drive mechanism 32 and the clamping structure 31 affecting the weighing detection value of the clamping structure 31, in some embodiments, the rotary drive mechanism 32 is connected to the clamping structure 31 through a coupling 38, and the dynamic torque sensor 5 cooperates with the coupling 38. The coupling 38 includes two components, which respectively connect the driving shaft and the driven shaft, transmit rotational motion and torque, compensate for installation deviations, and absorb vibration or impact. The driven shaft is in line contact with the support plate 37, which can reduce the impact on the counterweight 4. The dynamic torque sensor 5 cooperates with the two components of the coupling 38 respectively, thereby indirectly detecting the torque value during the rotation process.

[0051] During the test, the rotary drive mechanism 32 needs to drive the clamping structure 31 to rotate multiple times. To facilitate monitoring, a photoelectric switch 6 is installed on the mounting frame 1. The photoelectric switch 6 is used to detect the number of rotations of the rotary drive mechanism 32.

[0052] Please refer to Figure 3 A support bracket 60 is set and fixed on one of the flat plates of the mounting bracket 1. The support bracket 60 also serves to fix the housings of the photoelectric switch 6 and the dynamic torque sensor 5.

[0053] The torque testing equipment 100 also includes a control device, a buzzer 8, a touch screen 7, a start switch, control instruments, an emergency stop button, and other structures. The start switch controls the equipment's operation by energizing and de-energizing; the touch screen 7 coordinates scene design to achieve human-machine interaction and information visualization, used for adjusting operating parameters and providing visual feedback; the buzzer 8 provides signal prompts and alarms, and is used to detect abnormal signals; the control instruments monitor and display the load values ​​of the knobs; the emergency stop button is used to quickly cut off the power supply and stop the equipment in emergencies. For the mounting of related structural components, the mounting frame 1 should be equipped with electrical components, a shell plate, and other structures.

[0054] The control device can be an industrial computer, including a processing unit (such as a central processing unit, graphics processing unit, etc.), which can perform various appropriate actions and processes according to programs stored in read-only memory (ROM) or loaded from storage devices into random access memory (RAM). RAM also stores various programs and data required for the operation of the control device. The processing unit, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus. Typically, the following systems can be connected to the I / O interface: input devices including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices including, for example, magnetic tape, hard disks, etc.; and communication devices. Communication devices allow the control device to communicate wirelessly or wiredly with other devices to exchange data.

[0055] In this embodiment, the specific process for smartwatch detection is as follows: Smartwatch mounting and positioning: In the initial state, in the product positioning module, the unidirectional reciprocating cylinder drives the bracket 215 to move the base 211 upward to the assembly position. At this time, the screw connector 217 and the weighing sensor 22 detect and remove the pressure plate 212. After the smartwatch is mounted, the pressure plate 212 is then assembled. Preparation Phase: The switch is turned on, and the rotating test device 3 begins initial setup. The bearing seat, universal joint 34, counterweight 4, clamping structure 31, connector 312, and side push block 35 together constitute a specific load. During operation, the load weight is displayed in real time by the control instrument. The connector 312 drives the roller 313 to open the two grippers 311, while the two side push blocks 35 and universal joint 34 are fixed in a concentric alignment state. The positioning structure 21 is transferred to the weighing position under gravity to calibrate the initial weight of the smartwatch. Then, the knob key is clamped under a specific load. The load cell 22 outputs a signal to the control instrument after the force changes. If the gripper 311 fails to hold the knob key and it falls off, feedback can be provided based on the dynamic weight wave of the load cell 22 or because the weight of the load cell 22 does not change, thereby triggering an alarm signal to the buzzer 8. A reset is required, and the cause is analyzed before restarting the switch.

[0056] Testing Phase: After the knob is clamped, the rotary drive mechanism 32 drives the knob to rotate at a fixed rate through the drive clamping structure 31. The dynamic torque sensor 5 senses the force value and feeds it back to the force feedback system, outputting the real-time torque test value. During the test, if the knob falls off, the real-time force feedback value of the weighing sensor 22 will change, triggering an alarm signal to the buzzer 8. If there is no abnormality, the photoelectric switch 6 senses the number of rotations and displays the test result on the touch screen. If the test result is within the control range, the test is passed. Then, the equipment is restored to its initial state.

[0057] In the technical solution of the present invention, the main frame of the mounting bracket 1 is made of aluminum alloy and bakelite materials, which integrates the positioning, clamping and rotation of the smart watch, and includes a pressing actuator, a dynamic torque sensor 5, a weighing sensor 22, a servo motor and other coordinated control, which can be applied to the torque test of the knob of the smart watch, improving the test accuracy and test efficiency.

[0058] This invention also proposes a control method for a torque testing device 100, please refer to [reference needed]. Figure 5 The control method for the torque testing equipment 100 includes the following steps: Step S10: After the positioning structure 21 carrying the smartwatch to be tested comes into contact with the weighing sensor 22, the value of the weighing sensor 22 is obtained as the initial value. It should be noted that after the load cell 22 acquires a value, and the value remains stable for a certain period of time, the value is used as the initial value. For example, the initial value is used after the load cell 22 detects a value that has stabilized for 2 seconds.

[0059] Step S20: After the clamping structure 31 with counterweight 4 is clamped and fixed to the knob of the smartwatch, the value of the weighing sensor 22 is obtained as the measurement value. It should be noted that the initial value is the value before the smartwatch is detected and can be used as a calibration value. After the clamping structure 31 is clamped and engaged with the knob, the knob is subjected to a load, and the value of the weighing sensor 22 will change. Similarly, if the changed value remains stable for a certain period of time, it will be used as the measured value and used to evaluate the load value of the knob during measurement.

[0060] This is because although the mating parts usually have a clearly defined calibrated weight, the load that the entire system ultimately applies to the knob is not the same as the actual weight of the counterweight 4, so it is still necessary to perform testing and judgment.

[0061] Step S30: Calculate the difference between the measured value and the initial value to obtain the first observation value; It should be noted that the first observation value, as a direct measure of the load, can be directly displayed on the instrument for easy observation by testing personnel.

[0062] Step S40: If the first observed value meets the first preset condition, control the rotary drive mechanism 32 to work in order to obtain multiple torque test values ​​measured by rotating multiple times. The specific threshold of the first preset condition is not limited, but is determined according to the design parameters of the smartwatch. If the first observed value does not meet the first preset condition, the counterweight 4 needs to be added or removed.

[0063] Correspondingly, when the first observed value does not meet the first preset condition, an alarm signal is triggered, and the buzzer 8 is controlled to work to alert the staff to the abnormal situation.

[0064] It should be noted that the working mode of the rotary drive mechanism 32 can be adjusted according to the test requirements. For example, with the counterweight 4 weighing 1kg, the rotary drive mechanism 32 drives the knob to rotate at a fixed rate (2mm / S).

[0065] Step S50: Filter and calculate the average value of multiple torque test values ​​to obtain the second observation value; It should be noted that the dynamic torque sensor 5 can detect in real time. Therefore, based on the number of rotations of the rotary drive device, the dynamic torque sensor 5 can obtain multiple torque test values. Since the test values ​​of the first and last rotations are affected by the speed increase when the equipment starts and the speed decrease when it stops, the test values ​​fluctuate greatly. Therefore, the first or last rotation needs to be removed. Thus, the number of rotations of the rotary drive mechanism 32 should not be less than 3 rotations.

[0066] For example, the rotary drive mechanism 32 rotates 5 times. The test values ​​of the first and last rotations are removed, and the values ​​of the three stable rotations in the middle are taken as reference values. The average value is calculated and used as the second observation value.

[0067] For example, the rotary drive mechanism 32 rotates 7 times. The test values ​​of the first two and last two rotations are removed, and the values ​​of the three stable rotations in the middle are taken as reference values. The average value is calculated and used as the second observation value.

[0068] Step S60: Compare the second observation value with the second preset condition to confirm the detection result.

[0069] The second observation is data obtained under the premise that the load meets the test requirements. It can directly evaluate the damping of the knob key. Therefore, by comparing the second observation with the set second preset conditions, the current test result can be known.

[0070] In the technical solution of the present invention, the anti-torque fluctuation value and load value of the knob key can be fed back in real time under specific load conditions. Specifically, the weighing sensor 22 outputs the initial value of the total weight of the positioning mechanism and the product, as well as the test value after counterweight. Based on the screening and calculation of the torque detection data, the dynamic torque value under a specific force value is output, which can ensure the stability of the smart watch during the test and improve the test accuracy of the smart watch knob key.

[0071] In particular, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can also be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device, or installed from a ROM. When the computer program is executed by a processing device, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0072] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A torque testing device for testing the knob button of a smartwatch, characterized in that, The torque testing equipment includes: Mounting rack; A positioning and weighing device is mounted on the mounting frame. The device includes a positioning structure and a weighing sensor. The weighing sensor is fixed relative to the mounting frame. The positioning structure is movably mounted in the vertical direction and is located above the weighing sensor. The positioning structure is used to accommodate the smartwatch to be tested. During its movement, the positioning structure has an assembly position spaced from the weighing sensor and a weighing position in contact with the weighing sensor. A rotation testing device includes a clamping structure and a rotation drive mechanism. The rotation drive mechanism is located on the mounting frame and is drivenly connected to the clamping structure to drive the clamping structure to rotate along an axis extending in the vertical direction. The rotation drive mechanism is connected to a dynamic torque sensor. When the positioning structure is in the weighing position, the clamping structure is used to clamp the knob of a smartwatch. The clamping structure is connected to a counterweight.

2. The torque testing device as described in claim 1, characterized in that, The positioning structure includes: The base is movably installed onto the mounting bracket in the vertical direction. One side of the base is provided with a receiving groove for placing the smartwatch to be tested. A pressure plate, detachably mounted on the base, at least a portion of which is capable of supporting a smartwatch located within the receiving slot; and, The magnetic attraction structure includes a first magnetic attraction component and a second magnetic attraction component that magnetically engage, with the first magnetic attraction component and the second magnetic attraction component respectively disposed on the base and the pressure plate.

3. The torque testing device as described in claim 2, characterized in that, The positioning structure also includes: Two first limiting components are respectively disposed on opposite sides of the receiving groove. Each first limiting component includes two first limiting blocks disposed opposite each other. The two first limiting blocks are used to jointly limit the watch band of the smartwatch; and / or, Two second limiting blocks are respectively disposed on opposite sides of the receiving groove, and each second limiting block is detachably connected to the base for use with the dial of the smartwatch.

4. The torque testing device as described in claim 1, characterized in that, The positioning and weighing device further includes: A base, one side of which is used to mount the smartwatch to be tested, the base being slidably engaged with the mounting bracket via a guide rail structure; A bracket, fixedly connected to the base, the bracket having a downward-facing abutment surface; and, The driving part is fixed relative to the mounting bracket. The driving part has a driving end that is movably arranged in the vertical direction. The driving end can contact the abutment surface to drive the bracket to move upward, or separate from the bracket so that the bracket drives the base to move downward under the action of gravity.

5. The torque testing device as described in claim 2 or 4, characterized in that, The positioning and weighing device also includes a screw connector, the upper end of which is threaded onto the base, and the lower end of which can contact the weighing sensor. By adjusting the mating length between the screw connector and the base, the relative position of the base and the rotating testing device in the vertical direction can be adjusted.

6. The torque testing device as described in claim 1, characterized in that, The clamping structure includes two jaws arranged opposite each other in a horizontal direction. The upper end of each jaw forms a clamping part. The distance between the two clamping parts is adjustable. Each clamping part has a groove on its side facing the other clamping part. The upper sidewall of each groove has a notch that connects to its opening. The inner sidewalls of the two grooves are used to jointly abut against the peripheral side of the smartwatch's knob button. The two notches are used for the smartwatch's knob button shaft to pass through.

7. The torque testing device as described in claim 6, characterized in that, The lower ends of the two grippers are connected by an elastic element, and each gripper is arranged in an arc shape on the side facing away from the other gripping part; The clamping structure further includes two connectors, which are respectively disposed on both sides of the two grippers and connected to the mounting bracket. The two connectors have a travel distance that is close to or away from the grippers. Each connector has a roller at one end facing the corresponding gripper. The roller is rotatably mounted and is used to contact or separate from the side of the gripper corresponding to the connector during the movement of the connector.

8. The torque testing device as described in claim 1, characterized in that, The rotation testing device also includes a support platform, the upper end of which is used for mounting the clamping structure, and the lower end of which is connected to the rotation drive mechanism via a universal joint.

9. The torque testing device as described in claim 8, characterized in that, The universal joint has an annular curved surface; The rotation testing device further includes two side push blocks located on opposite sides of the universal joint. Each side push block has an arc-shaped surface on its end face facing the universal joint. The two side push blocks have a travel distance that moves closer to or further away from the universal joint. During the movement, each side push block can cause the arc-shaped surface to abut against the annular curved surface to push the universal joint to deflect, or cause the arc-shaped surface to separate from the annular curved surface, so that the universal joint can be driven to rotate by the rotation drive mechanism.

10. The torque testing device as described in claim 1, characterized in that, The rotary drive mechanism is connected to the clamping structure via a coupling, and the dynamic torque sensor cooperates with the coupling; and / or The mounting bracket is equipped with a photoelectric switch, which is used to detect the number of rotations of the rotary drive mechanism.

11. A control method for a torque testing device, based on the torque testing device as described in any one of claims 1 to 10, characterized in that, The control method for the torque testing equipment includes the following steps: After the positioning structure carrying the smartwatch to be tested comes into contact with the weighing sensor, the value of the weighing sensor is obtained as the initial value. After the clamping structure with the counterweight is clamped and fixed to the knob of the smartwatch, the value of the weighing sensor is obtained as the measurement value. Calculate the difference between the measured value and the initial value to obtain the first observation value; If the first observed value meets the first preset condition, control the rotary drive mechanism to work in order to obtain multiple torque test values ​​measured by rotating multiple times; The average value of the multiple torque test values ​​is obtained by filtering and calculating the average value to obtain the second observation value; The second observation value is compared with the second preset condition to confirm the detection result.

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