Spring elasticity detection mechanism and spring detection equipment for smart watch

Abstract

The invention relates to the technical field of spring detection, in particular to a spring elasticity detection mechanism and spring detection equipment for a smart watch, and the spring elasticity detection mechanism comprises a linear driving assembly and a detection shell; a laser range finder, a pressing cylinder, a pressure plate, a pressure sensor and a lifting unit are arranged on the detection shell; the laser range finder is vertically arranged at the upper part of the detection shell, and the range finding end is vertically downward; the downward pressing cylinder is movably arranged below the laser range finder in the vertical direction, and the downward pressing cylinder presses the key when descending; the pressure plate is arranged above the lower pressing cylinder and is of an annular structure, an annular groove is formed in the periphery of the pressure plate, the upper portion of the lower pressing cylinder is arranged in the annular groove in a sleeved mode, a gap exists between the upper portion of the lower pressing cylinder and the upper portion of the annular groove, and a pressure sensor is arranged in the gap; the lifting unit is arranged above the pressure plate and used for driving the pressure plate to lift. According to the invention, the detection period is greatly shortened, and the detection efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The application relates to a spring elasticity detection mechanism and a spring detection device for a smart watch. BACKGROUND

[0002] After the spring is produced, the spring needs to be detected in elasticity, so as to ensure that the elasticity of the spring meets the requirements. Different springs have different requirements in detection. However, before detection, the spring needs to be positioned to ensure the accuracy of the subsequent detection results.

[0003] Chinese Patent No. CN112903221B discloses a spring elasticity detection device for spring testing with convenient positioning, which comprises a test box, a positioning mechanism is arranged in the middle region of the lower end of the inside of the test box, the positioning mechanism comprises a positioning disc, a fixed sliding groove block, a fixed screw, a movable correction block, a test column, a movable block, a first sliding block, a fixed sliding groove frame, a first screw rod, a supporting block, a first rotating disc and a test guide rod, a positioning disc is arranged in the middle region of the lower end of the inside of the test box, a fixed sliding groove block is arranged at one end of the upper end of the positioning disc, a fixed screw is arranged in the inside of the fixed sliding groove block at one end, a movable correction block is arranged at the other end of the fixed sliding groove block, a test column is arranged in the inside of the movable correction block, a movable block is arranged at one end of the movable correction block, a first sliding block is arranged at the front end of the movable block, a fixed sliding groove frame is arranged at the front end of the first sliding block and the outside of the movable block at the upper end of the positioning disc, a first screw rod is arranged at one end of the movable block, a supporting block is arranged on the outer surface of the first screw rod at the upper end of the positioning disc close to one side of the fixed sliding groove frame, a first rotating disc is arranged at one end of the first screw rod, a test guide rod is arranged at the upper end of the test column, a CCD detector is arranged at the upper end of the test box, and a test spring is arranged at the lower end of the outer surface of the test guide rod.

[0004] The above scheme quickly positions the spring, thereby improving the detection speed. When the spring for a watch is detected, the spring is usually arranged in a watch assembly in advance, and the watch assembly is placed on a special jig to ensure accurate positioning during detection. During placement, a mechanical hand is mainly used for self-positioning. When the spring is detected, the maximum elasticity of the spring is mainly detected. Some high-end watches detect the rebound time of the spring. If the rebound time is too long, the user will feel that the button response is slow. If the rebound time is too short, the situation of false triggering is easy to occur. However, the prior art usually needs to use two detection stations to detect the maximum elasticity and rebound time of the spring respectively, and the detection efficiency is low. SUMMARY

[0005] In view of the above problems, the spring elasticity detection mechanism and the spring detection equipment for smart watches are provided, which are integrated with a laser range finder, a pressing cylinder, a pressure sensor, a lifting unit and other components, so that the spring elasticity detection mechanism can realize the synchronous detection of the maximum elastic force of the watch key spring and the key reset time through single-station single-contact. The lifting unit drives the pressure plate to descend, the pressure sensor accurately captures the pressure change in the process of pressing the key to obtain the maximum elastic force value, thereby avoiding the problem of inaccurate positioning caused by direct driving of the linear driving assembly and ensuring the detection accuracy; when the key is reset, the laser range finder monitors and records the reset time in real time, without the need for secondary positioning and transportation.

[0006] To solve the problems in the prior art, the spring elasticity detection mechanism is provided, which is used for pressing detection of the lower spring of a watch key, and comprises a linear driving assembly and a detection shell. A laser range finder, a pressing cylinder, a pressure plate, a pressure sensor and a lifting unit are arranged on the detection shell. The laser range finder is vertically arranged at the upper part of the detection shell and has a vertical downward ranging end, and the ranging end forms a detection path when detecting the lifting distance of the key. The pressing cylinder is movably arranged below the laser range finder in the vertical direction, and the pressing cylinder presses the key when descending, and the detection path penetrates from the center of the pressing cylinder. The pressure plate is arranged above the pressing cylinder and has a ring structure, a ring groove is formed in the periphery of the pressure plate, the upper part of the pressing cylinder is sleeved in the ring groove, and a gap is formed between the upper part of the pressing cylinder and the upper part of the ring groove, and the pressure sensor is arranged in the gap. The lifting unit is arranged at the upper part of the pressure plate and is used for driving the pressure plate to lift.

[0007] Preferably, the lifting unit comprises a rotating ring, a pressing block, a weight and a traction assembly. The rotating ring is rotatably arranged above the pressure plate along the axis of the pressure plate. The pressing block is fixedly arranged at the lower part of the rotating ring, the two sides of the pressing block are respectively a slope structure and a vertical structure, and the lower end of the pressing block and the lower end of the rotating ring jointly form a guide end surface for guiding the lifting of the pressure plate. The weight is vertically arranged on one side of the pressure plate. The two ends of the traction assembly are respectively connected with the weight and the pressure plate.

[0008] Preferably, the traction assembly comprises a rotating wheel and a traction rope. The rotating wheel is arranged above the pressure plate. The two ends of the traction rope are fixedly connected with the pressure plate and the weight, and the traction rope is wound on the upper part of the rotating wheel.

[0009] Preferably, a roller rolling matched with the guide end surface is arranged on the upper part of the pressure plate.

[0010] Preferably, a stop line is arranged on the slope structure of the pressing block, the vertical distance between the stop line and the lower end surface of the pressing block is referred to as the first pressing distance, the maximum pressing distance when the button is pressed is referred to as the second pressing distance, and the first pressing distance is equal to the second pressing distance.

[0011] Preferably, a guide rod is vertically arranged on the weight and sliding matched with the weight.

[0012] Preferably, the pressing cylinder is preferably a light and high-strength cylindrical structure material.

[0013] Preferably, a light shielding cylinder is vertically sliding arranged on the lower part of the pressing cylinder.

[0014] Preferably, a pressing head is arranged on the lower part of the pressing cylinder, and the lower part of the pressing head is provided with a chamfer.

[0015] The application also relates to a spring detection device for a smart watch, comprising a spring elasticity detection mechanism, a feeding mechanism and a discharging mechanism.

[0016] The application has the following beneficial effects compared with the prior art: 1. The spring elasticity detection mechanism realizes the synchronous detection of the maximum elastic force of the watch button spring and the reset time of the button through single-station single-contact by integrating a laser range finder, a pressing cylinder, a pressure sensor and a lifting unit. The maximum elastic force value is obtained by driving the pressure plate to descend by the lifting unit and accurately capturing the pressure change in the button pressing process by the pressure sensor, thereby avoiding the problem of inaccurate positioning caused by direct driving of the linear driving assembly and ensuring the detection accuracy. When the button is reset, the laser range finder monitors and records the reset time in real time without the need for secondary positioning and transfer. Compared with the existing detection method requiring two independent stations, the detection cycle is greatly shortened, the detection efficiency is effectively improved, and the detection demand of large-scale production of watches is better met.

[0017] 2. By arranging the pressing block and making the two sides of the pressing block be a slope structure and a vertical structure respectively, the moving speed and distance control of the pressure plate under different detection requirements are realized. The pressure plate is guided to descend by the slope structure, the micro-distance movement of the pressing cylinder is realized, the pressing distance of the pressing cylinder is matched with the pressing stroke of the button, and in addition, the other side of the pressing block is arranged as a vertical structure, so that the pressing cylinder can be quickly withdrawn from the button when the laser range finder measures the reset time of the button, and the accuracy of the measurement result is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1It is the three-dimensional schematic view of the spring detection equipment without feeding mechanism and discharging mechanism for the smart watch of the application.

[0019] Figure 2 It is the three-dimensional schematic view of the spring elasticity detection mechanism in the detection state.

[0020] Figure 3 It is the side view of the spring elasticity detection mechanism.

[0021] Figure 4 It is the sectional view of the spring elasticity detection mechanism. Figure 3

[0022] Figure 5 It is the sectional view of the spring elasticity detection mechanism. Figure 4

[0023] Figure 6 It is the sectional view of the spring elasticity detection mechanism.

[0024] Figure 7 It is the sectional view of the spring elasticity detection mechanism. Figure 6

[0025] Figure 8 It is the sectional view of the spring elasticity detection mechanism. Figure 6

[0026] Figure 9 It is the three-dimensional schematic view of the spring elasticity detection mechanism without linear drive assembly.

[0027] Figure 10 It is the sectional view of the spring elasticity detection mechanism without linear drive assembly.

[0028] Figure 11 It is the sectional view of the spring elasticity detection mechanism. Figure 10

[0029] Figure 12 It is the three-dimensional schematic view of the spring elasticity detection mechanism without detection shell and linear drive assembly.

[0030] Figure 13 It is the three-dimensional schematic view of the spring elasticity detection mechanism without pressing cylinder, detection shell and linear drive assembly.

[0031] ​​​​​The figure marks are: 1, linear drive assembly; 2, detection shell; 21, laser range finder; 22, pressing cylinder; 221, light shielding cylinder; 222, pressing head; 23, pressure plate; 231, roller; 24, pressure sensor; 25, lifting unit; 251, rotating ring; 2511, gear ring; 2512, gear; 2513, micro motor; 252, pressing block; 253, weight; 2531, guide rod; 254, traction assembly; 2541, rotating wheel; 2542, traction rope; 255, stop line; 3, button; 31, spring. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application is described in further detail below in combination with the drawings and specific embodiments.

[0033] Reference Figures 1-6 and Figure 11 : a spring elastic detection mechanism, which is used for detecting the pressing of the lower spring 31 of the watch button 3, and comprises a linear drive assembly 1 and a detection shell 2; A laser range finder 21, a pressing cylinder 22, a pressure plate 23, a pressure sensor 24 and a lifting unit 25 are arranged on the detection shell 2; The laser range finder 21 is vertically arranged at the upper part of the detection shell 2 and the ranging end vertically faces downward, and the ranging end forms a detection path when detecting the lifting distance of the button 3; The pressing cylinder 22 is movably arranged below the laser range finder 21 in the vertical direction, and the pressing cylinder 22 is pressed when it is lowered, and the detection path penetrates from the center of the pressing cylinder 22; The pressure plate 23 is arranged above the pressing cylinder 22 and has a ring structure, a ring groove is formed in the periphery of the pressure plate 23, the upper part of the pressing cylinder 22 is sleeved in the ring groove, and there is a gap between the upper part of the pressing cylinder 22 and the upper part of the ring groove, and the pressure sensor 24 is arranged in the gap; The lifting unit 25 is arranged at the upper part of the pressure plate 23 and is used for driving the pressure plate 23 to lift.

[0034] The existing spring elasticity detection mechanism detects the watch spring 31. The spring 31 needs to be integrated into the watch assembly in advance, such as the movement part containing the button 3 or the linkage transmission assembly. During assembly, special tooling is used to ensure that the installation angle, pre-compression amount and other parameters comply with the regulations to avoid affecting subsequent detection. During detection, the main detection item is the maximum spring force detection, that is, when the button 3 is completely pressed down, the spring force of the spring 31. The device compresses the spring 31 to the maximum stroke at the set speed, the sensor records the spring force change curve to determine the maximum value, and the spring force that does not comply with the regulations will affect the feel and durability of the button 3. On some high-end watches, the spring 31 rebound speed also needs to be detected, that is, the button 3 rebound time is detected. If the button 3 rebound time is too long, the button 3 will feel sluggish when in use. If the button 3 rebound time is too short, it is easy to trigger an error. However, in the prior art, the two detection items need two independent stations. After the assembly is completed in one detection, it needs to be transferred to another station and positioned again, which is time-consuming and inefficient, and is difficult to meet the large-scale production demand.

[0035] In order to improve the detection efficiency, the existing spring elasticity detection mechanism is optimized and designed. The spring elasticity detection mechanism in the application only needs to adopt one station and only needs to contact the button 3 on the watch once, so that the maximum pressure of the spring 31 and the reset time of the button 3 can be detected, and the detection efficiency is improved. The specific structure and working process of the application are as follows: The linear drive assembly 1 is used to drive the detection shell 2, and the linear drive assembly 1 can be selected according to actual conditions, such as an electric push rod, a ball screw module or a sliding table. When detection is performed, first, the assembly provided with the button 3 and the spring 31 is placed in the jig, and the assembly is moved to the detection position by the jig, that is, directly below the spring elastic detection mechanism, and then the linear drive assembly drives the detection shell 2 to descend, and the lower end of the pressing cylinder 22 is provided with a pressing head 222, and the pressing head 222 is in a ring structure, when the pressing head 222 contacts the button 3, the linear drive assembly 1 stops driving, and the stopping position of the linear drive assembly 1 after driving the pressing head 222 to descend can be preset in advance, and then the lifting unit 25 drives the pressure plate 23 to continue to descend, because when the linear drive assembly 1 drives the detection shell 2 to descend, the pressing distance of the button 3 is large, and it is easy to appear that the pressing distance is not in place or the pressing distance is too large, which leads to inaccurate detection results or damage to the button 3 after detection, and the lifting unit 25 can more stably drive the pressing cylinder 22 to ascend and descend, and reduce the slack in the lifting. The specific structure of the lifting unit 25 is described below. Because the pressing cylinder 22 is sleeved on the annular groove of the pressure plate 23, the pressing cylinder 22 and the pressure plate 23 are in sliding fit in the vertical direction, when the lifting unit 25 drives the pressing plate to descend, the pressing plate generates a pressing effect on the button 3 through the pressure sensor 24 and the pressing cylinder 22, as the button 3 is pressed down, the pressure sensor 24 detects the pressure change in real time, the stroke of the button 3 from the highest position to the lowest position is called the rated moving stroke, when the descending distance of the pressing cylinder 22 is the same as the rated moving stroke, the pressing cylinder 22 stops moving, after the button 3 is completely pressed down, the pressure value detected by the pressure sensor 24 reaches the maximum, thereby completing the detection of the maximum elastic force value of the spring 31, and then the lifting unit 25 drives the pressure plate 23 to quickly ascend, so that the pressing cylinder 22 quickly retreats from the upper part of the button 3, and the button 3 is reset under the action of the spring 31, in this process, the laser range finder 21 monitors the reset process of the button 3 and records the reset time of the button 3, so that through the pressing in turn, the detection of the maximum elastic force value of the spring 31 and the reset time of the button 3 can be completed, and the detection efficiency is improved.

[0036] By integrating the laser range finder 21, the pressing cylinder 22, the pressure sensor 24, and the lifting unit 25, etc., the spring elastic detection mechanism realizes the synchronous detection of the maximum elastic force of the watch key 3 spring 31 and the reset time of the key 3 in a single work station and a single contact. With the help of the lifting unit 25 driving the pressure plate 23 to descend, the pressure sensor 24 accurately captures the pressure change in the process of the key 3 being pressed to obtain the maximum elastic force value, avoiding the problem of inaccurate positioning caused by the direct driving of the linear driving assembly 1, and ensuring the detection accuracy; when the key 3 is reset, the laser range finder 21 monitors and records the reset time in real time, without the need for secondary positioning and transfer. Compared with the existing detection method which requires two independent work stations, the detection cycle is greatly shortened, the detection efficiency is effectively improved, and the detection demand of large-scale production of watches is better met.

[0037] Referring to Figure 7 、 Figure 9 、 Figure 10 、 Figure 12 and Figure 13 : the lifting unit 25 includes a rotating ring 251, a pressing block 252, a weight 253, and a traction assembly 254; The rotating ring 251 is arranged above the pressure plate 23 along the axis of the pressure plate 23; The pressing block 252 is fixedly arranged at the lower part of the rotating ring 251, the two sides of the pressing block 252 are respectively a slope structure and a vertical structure, and the lower end of the pressing block 252 and the lower end of the rotating ring 251 jointly form a guide end face for guiding the lifting of the pressure plate 23; The weight 253 is vertically arranged on one side of the pressure plate 23; The two ends of the traction assembly 254 are respectively connected with the weight 253 and the pressure plate 23.

[0038] The weight 253 always generates a vertical downward force under the action of its own gravity, and the weight 253 always generates an upward pulling force on the pressure plate 23 through the traction assembly 254. The upper part of the pressure plate 23 is provided with a roller 231 rotatingly, and the roller 231 at the upper part of the pressure plate 23 is always in contact with the guide end face under the action of the weight 253. When the rotating ring 251 rotates, the roller 231 is in rolling cooperation with the guide end face, and the lower pressing block 252 can only move in the vertical direction and cannot rotate around its own axis. Since the two sides of the lower pressing block 252 are respectively a slope structure and a vertical structure, when the rotating ring 251 rotates, the slope structure on one side of the lower pressing block 252 moves towards the roller 231. When the slope structure moves above the roller 231, with the continuous rotation of the rotating ring 251, the slope structure generates a downward pressing force on the roller 231. When the roller 231 passes through the slope structure of the lower pressing block 252, the roller 231 is in rolling cooperation with the lower end face of the lower pressing block 252. At this time, the lower pressing cylinder 22 completely presses the button 3, and at this time the pressure sensor 24 can detect the force generated by the spring 31. During the detection process, the rotating ring 251 continuously rotates, and when the vertical structure on one side of the lower pressing block 252 rotates to above the roller 231, the roller 231 quickly rises under the traction of the weight 253 and the traction assembly 254, so that the pressure plate 23 drives the lower pressing cylinder 22 to quickly withdraw from the button 3. At the same time, the laser range finder 21 detects the reset process of the button 3 in real time, and records the reset time of the button 3.

[0039] A gear ring 2511 is fixedly arranged at the upper part of the rotating ring 251 along the axis of the rotating ring 251, and a gear 2512 is rotatably arranged on one side of the gear ring 2511. The gear 2512 is in meshing cooperation with the gear ring 2511. A micro motor 2513 is vertically arranged at the upper part of the gear 2512, and the micro motor 2513 is used to drive the gear 2512 to rotate.

[0040] By arranging the lower pressing block 252 and making the two sides of the lower pressing block 252 respectively a slope structure and a vertical structure, the moving speed and distance control of the pressure plate 23 under different detection requirements is realized. The slope structure guides the pressure plate 23 to descend, realizes the micro-distance movement of the lower pressing cylinder 22, ensures that the pressing distance of the lower pressing cylinder 22 can match the pressing stroke of the button 3, and in addition, the other side of the lower pressing block 252 is arranged as a vertical structure, which ensures that the lower pressing cylinder 22 can quickly withdraw from the button 3 when the laser range finder 21 measures the reset time of the button 3, and ensures the accuracy of the measurement result.

[0041] With reference to Figure 5 , Figure 7 and Figure 12 : The traction assembly 254 includes a rotating wheel 2541 and a traction rope 2542; The rotating wheel 2541 is arranged above the pressure plate 23; Two ends of the traction rope 2542 are fixedly connected with the pressure plate 23 and the weight 253 respectively, and the traction rope 2542 is wound on the upper portion of the rotating wheel 2541.

[0042] The weight 253 always generates a vertical upward pulling force on the pressure plate 23 through the traction rope 2542.

[0043] With reference to Figure 13 A roller 231 is rotatably arranged on the upper portion of the pressure plate 23 and rolls with the guide end surface.

[0044] By arranging the roller 231 on the upper portion of the pressure plate 23, the pressure plate 23 rolls with the guide end surface through the roller 231, thereby reducing the abrasion when the rotating ring 251 rotates.

[0045] With reference to Figure 13 A stop line 255 is arranged on the slope structure of the pressing block 252, and the vertical distance between the stop line 255 and the lower end surface of the pressing block 252 is referred to as a first pressing distance. The maximum pressing distance when the button 3 is pressed is referred to as a second pressing distance. The first pressing distance is equal to the second pressing distance.

[0046] Before detection, the rotating ring 251 drives the pressing block 252 to rotate, so that the slope structure of the pressing block 252 presses the roller 231, and the rotation of the pressing block 252 stops when the roller 231 rolls to the stop line 255. Then the detection shell 2 is driven to descend by the linear driving assembly 1, and the pressing head 222 arranged on the lower portion of the pressing cylinder 22 contacts the upper portion of the button 3. Then the rotating ring 251 continues to rotate, so that the pressing block 252 continues to press the roller 231. Since the first pressing distance is equal to the second pressing distance, the pressing amount of the button 3 is neither too large nor too small, which ensures that the pressure sensor 24 can detect the maximum pressure value of the spring 31, and also avoids the damage of the button 3 caused by excessive pressure when the button 3 is pressed.

[0047] With reference to Figure 7 A guide rod 2531 is vertically arranged on the weight 253 and slidably connected with the weight 253.

[0048] The guide rod 2531 is used to guide the weight 253 to avoid shaking of the weight 253 during lifting.

[0049] With reference to Figures 1-13 The pressing cylinder 22 is preferably a light and high-strength cylindrical structure material.

[0050] Such as titanium alloy cylindrical structural material, aluminum lithium alloy cylindrical structural material, magnesium alloy cylindrical structural material, carbon fiber reinforced resin matrix composite material, glass fiber reinforced composite material, etc., ensure that the quality of the lower pressing cylinder 22 is lighter, and the heavy object 253 can quickly drive the pressure plate 23 and the lower pressing cylinder 22 to rise.

[0051] Referring to Figure 8 And Figure 11 : A light-shielding cylinder 221 is arranged vertically at the lower part of the lower pressing cylinder 22.

[0052] The light-shielding cylinder 221 is made of black light-shielding lightweight material, and can slide freely in the vertical direction. When the pressing head 222 is in contact with the key 3, the lower part of the light-shielding cylinder 221 is in contact with the key 3. Because the light-shielding cylinder 221 is light and constant, it can be selected to ignore or calculate the mass of the light-shielding cylinder 221 into the final pressure sensor 24 detection result when detecting. When the pressing head 222 completes the pressing of the key 3, the pressing head 222 starts to rise under the driving of the lower pressing cylinder 22, and the light-shielding cylinder 221 still maintains contact with the key 3. When the key 3 is reset under the action of the spring 31, the light-shielding cylinder 221 rises with the key 3. The purpose of arranging the light-shielding cylinder 221 is that some keys 3 are easily affected by external environmental light when detected by the laser range finder 21 due to external coating or material reasons, thereby reducing the detection accuracy of the key 3 reset time. After the light-shielding cylinder 221 is arranged, the above situation can be avoided.

[0053] Referring to Figure 11 And Figure 12 : A pressing head 222 is arranged at the lower part of the lower pressing cylinder 22, and the lower part of the pressing head 222 is provided with a chamfer.

[0054] The pressing head 222 is made of polyformaldehyde material, which can avoid scratching or indentation of the key 3 when the key 3 is pressed by the pressing head 222. Because the polyformaldehyde material has high hardness and will not be elastically deformed, it has strong wear resistance, prolongs the subsequent single maintenance period, reduces the workload, and also reduces the influence on the detection result of the pressure sensor 24.

[0055] Referring to Figures 1-13 : The application also relates to a spring detection device for a smart watch, which comprises a spring elasticity detection mechanism, a feeding mechanism and a discharging mechanism.

[0056] Working principle: When the spring elasticity detection mechanism works, first, the assembly with the key 3 and the spring 31 is placed in the jig and moved to the detection position. The linear drive assembly 1 drives the detection shell 2 to descend, and the pressing head 222 of the lower pressing cylinder 22 is in contact with the key 3 and then stops. At this time, the roller 231 is on the stop line 255 on the lower pressing block 252, and then the lifting unit 25 is started. In the lifting unit 25, the micro motor 2513 drives the gear 2512 to rotate the gear ring 2511 and the rotating ring 251, and the lower pressing block 252 at the lower part of the rotating ring 251 rotates accordingly. Under the pulling force of the weight 253 on the pressure plate 23 through the traction assembly 254, the upper roller 231 of the pressure plate 23 is always in contact with the guide end face. The lower pressing block 252 in rotation pushes the roller 231 and the pressure plate 23 to descend, and the pressure plate 23 drives the lower pressing cylinder 22 to press the key 3 through the pressure sensor 24. The pressure sensor 24 captures the pressure change in real time, and when the key 3 is completely pressed down, the pressure sensor 24 measures the maximum elastic force value. After the detection is completed, the rotating ring 251 continues to rotate, and when the lower pressing block 252 turns to the roller 231, the roller 231 rises quickly under the traction of the weight 253, drives the pressure plate 23 and the lower pressing cylinder 22 to move away from the key 3, and the key 3 is reset under the action of the spring 31. In this process, the laser range finder 21 monitors the resetting process of the key 3 along the detection path through the center of the lower pressing cylinder 22, records the time required for resetting, and thus completes the single detection.

[0057] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A spring elasticity detection mechanism for detecting the pressure of a lower spring (31) of a watch button (3), the detection mechanism comprising a linear drive assembly and a detection housing (2); Its features are, A laser rangefinder (21), a pressure cylinder (22), a pressure plate (23), a pressure sensor (24), and a lifting unit (25) are provided on the detection housing (2); The laser rangefinder (21) is vertically set on the upper part of the detection shell (2) with the measuring end facing vertically downward. When the measuring end detection button (3) moves up and down, a detection path is formed. The pressure cylinder (22) moves vertically and is positioned below the laser rangefinder (21). When the pressure cylinder (22) descends, it presses the button (3). The detection path passes through the center of the pressure cylinder (22). The pressure plate (23) is located above the lower pressure cylinder (22) and has an annular structure. An annular groove is provided on the periphery of the pressure plate (23). The upper part of the lower pressure cylinder (22) is fitted into the annular groove. There is a gap between the upper part of the lower pressure cylinder (22) and the upper part of the annular groove. A pressure sensor (24) is installed in the gap. The lifting unit (25) is located on the upper part of the pressure plate (23) and is used to drive the pressure plate (23) to rise and fall.

2. The spring elasticity detection mechanism according to claim 1, characterized in that, The lifting unit (25) includes a rotating ring (251), a lowering block (252), a weight (253), and a traction assembly (254); The rotating ring (251) is rotatably positioned above the pressure plate (23) along the axis of the pressure plate (23); The lower pressure block (252) is fixedly installed at the lower part of the rotating ring (251). The two sides of the lower pressure block (252) are a sloping structure and a vertical structure, respectively. The lower end of the lower pressure block (252) and the lower end of the rotating ring (251) together form a guide end face for guiding the pressure plate (23) to rise and fall. The weight (253) is vertically positioned on one side of the pressure plate (23); The two ends of the traction assembly (254) are connected to the weight (253) and the pressure plate (23), respectively.

3. The spring elasticity detection mechanism according to claim 2, characterized in that, The traction assembly (254) includes a pulley (2541) and a traction rope (2542); The rotating wheel (2541) is positioned above the pressure plate (23); The two ends of the traction rope (2542) are fixedly connected to the pressure plate (23) and the weight (253) respectively, and the traction rope (2542) is wound around the upper part of the wheel (2541).

4. The spring elasticity detection mechanism according to claim 2, characterized in that, A roller (231) is rotatably mounted on the upper part of the pressure plate (23) and rolls in cooperation with the guide end face.

5. The spring elasticity detection mechanism according to claim 1, characterized in that, A stop line (255) is provided on the sloping structure of the pressure block (252). The straight distance between the stop line (255) and the lower end face of the pressure block (252) in the vertical direction is called the first pressing distance. The maximum pressing distance when the button (3) is pressed is the second pressing distance. The first pressing distance and the second pressing distance are equal.

6. A spring elasticity detection mechanism according to claim 2, characterized in that, A guide rod (2531) is vertically inserted through the weight (253), and the guide rod (2531) slides with the weight (253).

7. The spring elasticity detection mechanism according to claim 1, characterized in that, The pressure cylinder (22) is preferably made of a lightweight, high-strength cylindrical material.

8. A spring elasticity detection mechanism according to claim 1, characterized in that, A light-shielding cylinder (221) is vertically slidably installed at the lower part of the pressure cylinder (22).

9. A spring elasticity detection mechanism according to claim 1, characterized in that, A pressing head (222) is provided at the lower part of the pressing cylinder (22), and the lower part of the pressing head (222) is provided with a chamfer.

10. A spring detection device for smartwatches, characterized in that, The invention includes a spring elasticity detection mechanism, a feeding mechanism, and a discharging mechanism as described in any one of claims 1-9.

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