Smart watch based on internet of things

Abstract

The application relates to the field of watch technology, in particular to an intelligent watch based on the Internet of Things, which comprises a watch main body and a processor, an operating system, a memory, an Internet of Things module, a display screen and a battery arranged in the watch main body; wherein the Internet of Things module is used for realizing the connection between the watch and the Internet of Things and comprises an antenna used for receiving and sending wireless signals. The wrist patch is attached to the wrist, expandable watchband groups are arranged in the wrist patch, the wrist patch can instantaneously cover the wrist under the elastic pressing of the pre-tightening sheet, and wearing is completed; the watch main body can be instantaneously taken off when the watch is taken off, the watch has good convenience, can be worn at different positions of the arm, and is suitable for hand washing and other operations, and has high applicability.

Description

IoT-based smartwatches Technical Field

[0001] This invention relates to the field of watch technology, specifically to smartwatches based on the Internet of Things (IoT). Background Technology

[0002] The Internet of Things (IoT) refers to connecting any object to a network through information sensing devices and according to agreed-upon protocols. Objects exchange and communicate information through communication media to achieve intelligent identification, positioning, tracking, and monitoring functions. Smartwatches, mobile phones, and home appliances can all achieve interconnection through network modules. Currently, most watches have straps for wearing, and to prevent slippage, they have buckles at the ends. However, this makes one-handed operation somewhat inconvenient, especially with frequent watch changes. Over time, this reduces the wearer's motivation, rendering the watch unusable and indirectly leading to its abandonment. The IoT, on the other hand, requires human use to create value. Summary of the Invention

[0003] In order to overcome the deficiencies in the prior art, the present invention aims to provide a smartwatch based on the Internet of Things to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides an Internet of Things (IoT) based smartwatch, including a watch body and its internal processor, operating system, memory, IoT module, display screen, and battery; wherein, the IoT module is used to connect the watch to the Internet of Things, including an antenna for receiving and transmitting wireless signals; the watch body can be paired with a smartphone to transmit and share information through wireless communication technology; the back of the watch body is provided with an arc-shaped wrist rest, the wrist rest is provided with a watch strap assembly, and a linkage assembly is provided between the watch body and the wrist rest; when the watch body is pressed down and then rotated, the movement of the linkage assembly drives the air pumped into both sides of the watch strap assembly, thereby allowing it to be worn on the wrist;

[0005] The wrist strap is a hollow cuboid with wrist strap sleeves connected to its left and right sides. The watch strap assembly includes a pair of watch strap pouches that fit with the two wrist strap sleeves, an air-filled airbag connected to the intersection of the pair of watch strap pouches, and a pre-tightening piece for bending the inflated watch strap pouches.

[0006] As a further improvement to this technical solution, the linkage assembly includes a pressure plate that fits into the cavity of the wrist patch, a pull tab that is bonded to the bottom surface of the airbag, a fixing sleeve for pressing the top port of the airbag, a pair of spring pieces connected to the inner wall of the fixing sleeve, and a pair of pull rods for lifting the pull tab; the top of the spring piece slides against the pressure plate, the top of the pull rod is rotatably connected to the inner wall of the fixing sleeve, and the side of the spring piece is provided with a sector gear for driving the pull rod to rotate up and down.

[0007] The wristband sleeves are symmetrically distributed on both sides of the wrist patch and extend in an arc shape. The upper and lower surfaces of the wrist patch are both open at the center. The inner wall of the upper opening is provided with a sealing ring extending downward, and the inner wall of the lower opening is provided with a ventilation ring extending downward. A gap for ventilation is left between the bottom end of the sealing ring and the ventilation ring.

[0008] As a further improvement to this technical solution, a sealing sleeve is provided at the intersection of the pair of watch strap pouches. The sealing sleeve is sleeved with the sealing ring. The pair of watch strap pouches, the sealing sleeve and the airbag are integrally molded from plastic. The two sides of the watch strap pouch and the outer side of the airbag are pleated and layered. The airbag is sleeved with the ventilation ring.

[0009] As a further improvement to this technical solution, the inner wall of the sealing ring is symmetrically provided with limiting grooves, the limiting grooves extend vertically, and the bottom inner wall of the sealing ring is provided with an annular groove that communicates with the bottom ends of the two limiting grooves. The pressing plate is sleeved with the sealing ring, and the side of the pressing plate is symmetrically provided with locking blocks, which engage with the limiting grooves and the annular groove and can slide.

[0010] As a further improvement to this technical solution, the pretensioner is made of spring steel in a V-shape. The outer end of the pretensioner is bonded to the outer end of the watch strap pouch. The inner walls on both sides of the wrist strap sleeve are symmetrically provided with guide grooves. The pretensioner is engaged with the guide grooves and can slide. The inner wall at the top of the wrist strap sleeve is provided with a guide platform. The outer end of the guide platform is thick and its inner end is thin.

[0011] As a further improvement to this technical solution, the spring sheet is made of spring steel with a thin sheet structure and its lower end is a bent section. This bent section is bonded to the boss provided on the inner wall of the fixed sleeve. The upper end of the spring sheet is provided with a slider that is slidably connected to the bottom surface of the pressure plate.

[0012] As a further improvement to this technical solution, the top side of the sector gear is bonded to the side of the bent portion of the spring sheet, and the central axis of the sector gear coincides with the central axis of the bent portion of the spring sheet. The top side of the pull rod is tightly inserted with a toothed column that meshes with the sector gear, and the radius of the sector gear is larger than the radius of the toothed column.

[0013] As a further improvement to this technical solution, the pull tab is annular and its top surface is symmetrically provided with a hanging rod. The pull rod is a hollow rod structure and is slidably connected to the hanging rod by a pin.

[0014] As a further improvement to this technical solution, the bottom surface of the tablet is provided with an annular groove, and guide grooves tangent to the groove are provided on both radial sides of the groove. The slider engages with the groove and guide grooves and can slide.

[0015] As a further improvement to this technical solution, the top surface of the pressing plate is provided with a protruding post at the center and a sphere is provided at the top of the protruding post. The bottom surface of the watch body is fixedly connected to a movable platform, and the bottom surface of the movable platform is provided with a circular shell cover that fits into the sphere.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This IoT-based smartwatch features a wrist-mounted insert that fits snugly against the wrist. An expandable strap assembly is located within the insert. To wear the watch, press the watch body until the pressure plate in the linkage assembly reaches the annular groove, then rotate the watch body so that its wide edge faces the strap. During this process, the air bladder is lifted and contracts, releasing gas into a pair of strap pouches. Under the spring pressure of the pre-tightening plate, the pouch instantly wraps around the wrist, completing the wearing process. Removing the watch is as simple as rotating the watch body back. This design offers excellent convenience and allows the watch to be worn on different parts of the arm for tasks such as handwashing, making it highly versatile.

[0018] 2. This IoT-based smartwatch comprises a main body and its internal components, including a processor, operating system, memory, IoT module, display screen, and battery. The IoT module enables the watch to connect to the Internet of Things (IoT) and includes an antenna for receiving and transmitting wireless signals. The main body of the watch can be paired with a smartphone to transmit and share information via wireless communication technology. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0020] Figure 1 is a schematic diagram of the overall assembly structure of the present invention;

[0021] Figure 2 is a schematic diagram of the overall partial assembly structure of the present invention;

[0022] Figure 3 is a plan view of the overall internal assembly structure of the present invention;

[0023] Figure 4 is a structural plan view of the overall internal unfolded state of the present invention;

[0024] Figure 5 is a schematic diagram of the linkage assembly structure of the present invention;

[0025] Figure 6 is a plan view of the linkage assembly structure of the present invention;

[0026] Figure 7 is a plan view of the linkage assembly in the deployed state of the present invention;

[0027] Figure 8 is a plan view of the linkage assembly in the retracted state of the present invention;

[0028] Figure 9 is a full cross-sectional structural diagram of the wrist patch of the present invention;

[0029] Figure 10 is a schematic diagram of the watch strap assembly structure of the present invention;

[0030] Figure 11 is a schematic diagram of the bottom structure of the tablet of the present invention;

[0031] Figure 12 is a breakdown diagram of the linkage assembly of the present invention;

[0032] Figure 13 is a schematic diagram of the fixing sleeve structure of the present invention.

[0033] The meanings of the labels in the diagram are as follows:

[0034] 100. Watch body;

[0035] 200. Wristband; 210. Wristband sleeve; 211. Guide groove; 212. Guide platform; 220. Sealing ring; 221. Limiting groove; 222. Annular groove; 223. Limiting block; 230. Vent ring;

[0036] 300. Watch strap assembly; 310. Watch strap pouch; 311. Sealing sleeve; 320. Airbag; 330. Pretensioner plate;

[0037] 400. Linkage assembly; 410. Pressing plate; 411. Settling tank; 412. Guide groove; 413. Locking block; 420. Pulling plate; 421. Hanging rod; 430. Fixing sleeve; 431. Boss; 440. Spring; 441. Sector gear; 442. Slider; 450. Pull rod; 451. Gear column; 460. Movable table; 461. Round shell cover. Detailed Implementation

[0038] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, and these should all be considered to fall within the scope of the invention. The terms "installation" and "connection" should be interpreted broadly, referring to direct connection or indirect connection through an intermediate medium.

[0039] The terms "central axis," "vertical," "horizontal," "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0040] Please refer to Figures 1-13. This invention provides an Internet of Things (IoT) based smartwatch, including a watch body 100 and its internal components such as a processor, operating system, memory, IoT module, display screen, and battery. The IoT module enables the watch to connect to the Internet of Things (IoT) and includes an antenna for receiving and transmitting wireless signals. The watch body 100 can be paired with a smartphone to transmit and share information via wireless communication technology. The processor controls the watch's operation, including data processing and user interface display. The operating system provides software support for the smartwatch, including application development and execution. The memory stores data, including but not limited to applications, operating system data, and user data. The battery provides power to the watch. The display screen shows information, including but not limited to time, notifications, and health data. The watch body has buttons and sensors for controlling the watch and collecting data. The smartwatch can monitor the user's health status, including but not limited to heart rate, blood pressure, and sleep quality. The smartwatch can connect to other smart devices in the home, including but not limited to smart bulbs and smart speakers. The smartwatch can connect to health monitoring devices and smart home systems.

[0041] In addition, the back of the watch body 100 is provided with an arc-shaped wrist rest 200 so as to fit on the wrist; the wrist rest 200 is provided with a watch strap assembly 300 inside, and a linkage assembly 400 is provided between the watch body 100 and the wrist rest 200. When the watch body 100 is pressed down and then rotated, the movement of the linkage assembly 400 drives the air in the middle of the watch strap assembly 300 to be pumped into both sides, and then worn on the wrist; so that the watch body 100 can be put on instantly with one hand.

[0042] The wrist strap body 200 is a hollow cuboid with wrist strap sleeves 210 connected on its left and right sides. The watch strap assembly 300 includes a pair of watch strap pouches 310 that fit with the two wrist strap sleeves 210, an air-filled airbag 320 connected to the intersection of the pair of watch strap pouches 310, and a pre-tensioning piece 330 for bending the inflated watch strap pouches 310. The wrist strap sleeves 210 are used to store the watch strap pouches 310 and the pre-tensioning piece 330.

[0043] By expelling the gas from the airbag 320 into the strap pouch 310, it expands out of the wristband sleeve 210 and simultaneously brings out the pretensioner 330. The pretensioner 330 is no longer constrained by the wristband sleeve 210 and returns to its original shape. Thus, the original shape of the pretensioner 330 is used to attach the expanded strap pouch 310 to the side and part of the bottom of the wrist, thereby holding the wrist securely when wearing the watch body 100.

[0044] Furthermore, the linkage assembly 400 includes a pressure plate 410 that is sleeved with the cavity of the wrist patch 200, a pull tab 420 that is bonded to the bottom surface of the airbag 320, a fixing sleeve 430 for pressing the top port of the airbag 320, a pair of spring pieces 440 connected to the inner wall of the fixing sleeve 430, and a pair of pull rods 450 for lifting the pull tab 420; the top of the spring piece 440 slides against the pressure plate 410, the pressure plate 410 presses down to cause the spring piece 440 to flip down, the top of the pull rod 450 is rotatably connected to the inner wall of the fixing sleeve 430, and a sector gear 441 is provided on the side of the spring piece 440 for driving the pull rod 450 to flip up and down;

[0045] When the spring 440 flips down, it drives the sector gear 441 to deflect, which in turn drives the pull rod 450 to flip up and lift the pull tab 420. This causes the air bag 320 to contract and release the gas. The gas then enters the two strap pouches 310, causing them to expand and extend out of the wrist strap sleeve 210. As a result, the wrist is clamped by the elastic force of the pre-tensioning plate 330 returning to its original shape.

[0046] Furthermore, the wristband sleeves 210 are symmetrically distributed on both sides of the wristband body 200 and extend in an arc shape. The upper and lower surfaces of the wristband body 200 are both open at the center. The inner wall of the upper opening is provided with a sealing ring 220 extending downward, and the inner wall of the lower opening is provided with a venting ring 230 extending downward. The top of the sealing ring 220 and facing the wristband sleeve 210 are provided with a limiting block 223 to prevent the pressure plate 410 from slipping out of the sealing ring 220. A gap for ventilation is left between the bottom end of the sealing ring 220 and the venting ring 230 so that the air bag 320 can contract and release the gas through this gap and enter the watchband bag 310.

[0047] A sealing sleeve 311 is provided at the intersection of a pair of strap pouches 310. The contact surface between the strap pouch 310 and the sealing sleeve 311 is open to allow ventilation. The sealing sleeve 311 is sleeved with a sealing ring 220. The pair of strap pouches 310, the sealing sleeve 311, and the air bladder 320 are integrally molded from a plastic body, preferably silicone, so that it can expand when inflated and contract when deflated. The two sides of the strap pouch 310 and the outer side of the air bladder 320 are pleated and layered, so that they can store a large amount of gas when inflated. The air bladder 320 is sleeved with a venting ring 230. The amount of air is controlled by adjusting the size of the air bladder 320, thereby controlling the length of the strap pouch 310 extended. In addition, when the air bladder 320 is contracted and worn on the wrist, it can adhere to the skin and prevent slippage.

[0048] Specifically, the inner wall of the sealing ring 220 is symmetrically provided with limiting grooves 221, which extend vertically. The bottom inner wall of the sealing ring 220 is provided with an annular groove 222 that communicates with the bottom ends of the two limiting grooves 221. The pressure plate 410 is sleeved with the sealing ring 220. The outer side of the pressure plate 410 is wrapped with silicone to seal it, so that the pressure plate 410 can squeeze the gas in the sealing ring 220 into the watch strap pouch 310 when it moves down. The side of the pressure plate 410 is symmetrically provided with locking blocks 413, which engage with the limiting grooves 221 and the annular groove 222 and can slide. The locking blocks 413 and the limiting grooves 221 are used to limit the orientation of the watch body 100. The annular groove 222 provides space for the locking blocks 413 to rotate and also limits the locking blocks 413 to ensure that the pressure plate 410 is not bounced up by the spring 440 after being pressed down, so that the gas is stably stored in the watch strap pouch 310.

[0049] Furthermore, the pretensioner 330 is made of spring steel in a V-shape. The pretensioner 330 is inserted into the wristband sleeve 210 and straightens to store elastic potential energy. After the pretensioner 330 expands and extends with the strap pouch 310, it returns to its original shape and releases the elastic force, causing the strap pouch 310 to bend and clamp the wrist, so that the watch body 100 can be worn instantly.

[0050] The outer end of the pretensioner 330 is bonded to the outer end of the strap pouch 310. The inner walls of both sides of the wristband sleeve 210 are symmetrically provided with guide grooves 211. The pretensioner 330 is engaged with the guide grooves 211 and can slide to stabilize the pretensioner 330. The top inner wall of the wristband sleeve 210 is provided with a guide platform 212. The outer end of the guide platform 212 is thick and its inner end is thin. The guide platform 212 is used to guide the original pretensioner 330 to smoothly retract into the wristband sleeve 210.

[0051] Specifically, the spring sheet 440 is made of spring steel with a thin sheet structure and its lower end is a bent section. This bent section is bonded to the boss 431 provided on the inner wall of the fixed sleeve 430, so that the upper part of the spring sheet 440 can move freely and is then pressed down by the pressure plate 410.

[0052] The upper end of the spring piece 440 is provided with a slider 442 that is slidably connected to the bottom surface of the pressure plate 410. The bottom surface of the pressure plate 410 is provided with an annular groove 411. The radial sides of the groove 411 are provided with guide grooves 412 that are tangent to it. The slider 442 is engaged with the groove 411 and the guide grooves 412 and can slide. The groove 411 is used to stabilize and limit the movement of the spring piece 440 relative to the pressure plate 410 below it. Since the spring piece 440 will displace after being flattened, the guide grooves 412 can guide the slider 442 to displace, ensuring that the flattened state of the spring piece 440 is not interfered with.

[0053] It is worth noting that the top side of the sector gear 441 is bonded to the side of the bent part of the spring piece 440, and the central axis of the sector gear 441 is set to coincide with the central axis of the bent part of the spring piece 440. This causes the sector gear 441 to rotate when the spring piece 440 is flattened. The top side of the pull rod 450 is tightly inserted with a toothed column 451 that meshes with the sector gear 441. The radius of the sector gear 441 is larger than the radius of the toothed column 451. This makes the deflection angle of the sector gear 441 smaller than the rotation angle of the toothed column 451. Thus, the limited flipping space of the spring piece 440 drives the pull rod 450 to a larger deflection range, which helps to deepen the air storage space of the airbag 320.

[0054] Furthermore, the pull tab 420 is annular and its top surface is symmetrically provided with a hanger 421. The pull rod 450 is a hollow rod structure and is slidably connected to the hanger 421 by a pin. When the pull rod 450 is flipped up to the horizontal, the hanger 421 can slide and move along the hollow cavity of the pull rod 450, thereby ensuring that the pull tab 420 is lifted vertically, which in turn drives the airbag 320 to contract and release air.

[0055] Furthermore, the top surface of the pressure plate 410 has a protruding post at its center and a sphere at the top of the protruding post. The bottom surface of the watch body 100 is fixedly connected to a movable platform 460. The bottom surface of the movable platform 460 has a circular shell cover 461 that fits onto the sphere. The pressure plate 410 and the movable platform 460 are each made of plastic and are integrally molded. The bottom of the circular shell cover 461 is open and the inner diameter of the opening is smaller than the diameter of the sphere, so that the circular shell cover 461 can move freely outside the sphere without slipping. When not wearing the watch, it is convenient to adjust the usage angle of the watch body 100.

[0056] When wearing the IoT-based smartwatch of the present invention, the wrist patch 200 is attached to the top surface of the wrist, then the watch body 100 is pressed until the pressure plate 410 reaches the annular groove 222, and then the watch body 100 is rotated so that its wide edge faces the wrist strap 210. The wearing process is completed instantly in this process, as follows: the pressure plate 410 squeezes a pair of springs 440 to flip down to the horizontal, and the sector gear 441 drives the top of the pull rod 450 to flip up to the horizontal. At the same time, the hanging rod 421 can slide along the hollow cavity of the pull rod 450, that is, slide from the bottom end of the pull rod 450 to its top end. Then the pull plate 420 is lifted vertically, which in turn drives the air bag 320 to contract and release air. The gas enters the two strap bags 310, causing them to expand and extend out of the wrist strap 210. Thus, under the elastic force of the pre-tightening plate 330 returning to its original shape, the strap bags 310 are clamped and attached to the wrist.

[0057] To remove the watch body 100, simply rotate it. The pressure plate 410 moves upward and resets under the elastic force of the spring plate 440. The pull rod 450 is then driven downward and reset by the sector gear 441, which in turn supports the air bag 320 and draws back the gas in the watch strap bag 310 under negative pressure, causing the watch strap bag 310 to retract into the wristband sleeve 210, allowing the watch body 100 to be removed. This watch body 100 can be put on and taken off instantly with one hand, providing excellent convenience. It can also be worn on different parts of the arm for operations such as washing hands, making it highly versatile.

[0058] It should be noted that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A smartwatch based on the Internet of Things (IoT), comprising a watch body (100) and its internal components including a processor, operating system, memory, IoT module, display screen, and battery; wherein, The IoT module is used to connect the watch to the Internet of Things, including an antenna for receiving and sending wireless signals; the watch body (100) can be paired with a smartphone to transmit and share information through wireless communication technology; characterized in that the back of the watch body (100) is provided with an arc-shaped wrist rest (200), the wrist rest (200) is provided with a watch strap assembly (300) inside, and a linkage assembly (400) is provided between the watch body (100) and the wrist rest (200), the watch body (100) is pressed down and then rotated, and the movement of the linkage assembly (400) drives the watch strap assembly (300). Gas is pumped into the sides of the central part and then worn on the wrist; the wristband (200) is a hollow cuboid with wrist strap sleeves (210) connected to its left and right sides; the watchband assembly (300) includes a pair of watchband pouches (310) that fit with the two wrist strap sleeves (210), an air-filled airbag (320) connected to the intersection of the pair of watchband pouches (310), and a pre-tightening piece (330) for bending the inflated watchband pouches (310); the linkage assembly (400) includes a pressure piece (410) that fits with the cavity of the wristband (200), a pull piece (420) that is bonded to the bottom surface of the airbag (320), and a piece for pressing the airbag (320) closed. The top end of the sleeve (430) has a fixed sleeve (430), a pair of spring pieces (440) connected to the inner wall of the fixed sleeve (430), and a pair of pull rods (450) for lifting the pull piece (420); the top end of the spring piece (440) slides against the pressure plate (410), the top end of the pull rod (450) is rotatably connected to the inner wall of the fixed sleeve (430), and the side of the spring piece (440) is provided with a sector gear (441) for driving the pull rod (450) to rotate up and down; the wristband sleeve (210) is symmetrically distributed on both sides of the wristband body (200) and extends in an arc shape, and the upper and lower surfaces of the wristband body (200) are open at the center, and the upper opening is inside A sealing ring (220) extends downward from the wall, and a venting ring (230) extends downward from the inner wall of the lower opening. A gap for ventilation is left between the bottom end of the sealing ring (220) and the venting ring (230). A sealing sleeve (311) is provided at the intersection of a pair of strap pouches (310). The sealing sleeve (311) is sleeved with the sealing ring (220). The pair of strap pouches (310), the sealing sleeve (311) and the airbag (320) are integrally molded from plastic. The two sides of the strap pouch (310) and the outer side of the airbag (320) are pleated and layered. The airbag (320) is sleeved with the venting ring (230).

2. The smartwatch based on the Internet of Things according to claim 1, characterized in that: The inner wall of the sealing ring (220) is symmetrically provided with limiting grooves (221), which extend vertically. The bottom inner wall of the sealing ring (220) is provided with an annular groove (222) that communicates with the bottom ends of the two limiting grooves (221). The pressure plate (410) is sleeved on the sealing ring (220). The side of the pressure plate (410) is symmetrically provided with a locking block (413), which engages with the limiting groove (221) and the annular groove (222) and can slide.

3. The smartwatch based on the Internet of Things according to claim 2, characterized in that: The pretensioning plate (330) is made of spring steel in a V-shape. The outer end of the pretensioning plate (330) is bonded to the outer end of the watch strap pouch (310). The inner walls of both sides of the wrist strap sleeve (210) are symmetrically provided with guide grooves (211). The pretensioning plate (330) is engaged with the guide grooves (211) and can slide. The inner wall of the top of the wrist strap sleeve (210) is provided with a guide platform (212). The outer end of the guide platform (212) is thick and its inner end is thin.

4. The smartwatch based on the Internet of Things according to claim 3, characterized in that: The spring sheet (440) is made of spring steel and has a bent section at its lower end. This bent section is bonded to the boss (431) provided on the inner wall of the fixed sleeve (430). The upper end of the spring sheet (440) is provided with a slider (442) that is slidably connected to the bottom surface of the pressure plate (410).

5. The smartwatch based on the Internet of Things according to claim 4, characterized in that: The top side of the sector gear (441) is bonded to the side of the bent part of the spring piece (440), and the central axis of the sector gear (441) coincides with the central axis of the bent part of the spring piece (440). The top side of the pull rod (450) is tightly inserted with a toothed column (451) that meshes with the sector gear (441). The radius of the sector gear (441) is larger than the radius of the toothed column (451).

6. The smartwatch based on the Internet of Things according to claim 5, characterized in that: The pull tab (420) is annular and has a symmetrically arranged rod (421) on its top surface. The pull rod (450) is a hollow rod structure and is slidably connected to the rod (421) by a pin.

7. The smartwatch based on the Internet of Things according to claim 6, characterized in that: The bottom surface of the tablet (410) is provided with an annular groove (411), and guide grooves (412) tangent to the groove (411) are provided on both radial sides of the groove (411). The slider (442) engages with the groove (411) and the guide groove (412) and can slide.

8. The smartwatch based on the Internet of Things according to claim 7, characterized in that: The top surface of the pressing plate (410) is provided with a protruding post and a sphere is provided at the top of the protruding post. The bottom surface of the watch body (100) is fixedly connected to a movable platform (460), and the bottom surface of the movable platform (460) is provided with a round shell cover (461) that fits into the sphere.

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