Portable electronic communication device

Abstract

The invention relates to the technical field of electronic communication, in particular to a portable electronic communication device which comprises a display screen and a communication body and further comprises a mainboard, a mounting hole is formed in the upper surface of the mainboard, and a buffer mechanism is arranged on the side edge of the mounting hole; the device has the beneficial effects that by arranging the rotating disc, the balancing weight and the piston plate, when the device is worn on the forearm through the wearing mechanism, the end where the rotating disc is located is close to the position of the hand, during walking, along with swinging of the arm, the balancing weight drives the rotating disc to rotate in a reciprocating mode, and then the piston plate slides in an air exhaust cavity in a reciprocating mode; under the action of the first one-way valve and the second one-way valve, air in the vent hole can be sucked into the air suction cavity and then is pressed out by the piston plate through the air outlet hole, the action generated when a human body walks is used for driving airflow to flow in the vent hole, the communication body is cooled, the purpose of saving energy is achieved, and the communication device is simple in structure and convenient to use. The failure rate is low.

Description

Technical Field

[0001] This invention relates to the field of electronic communication technology, and more specifically to a portable electronic communication device. Background Technology

[0002] In recent years, with the rapid development of the mobile internet, people's demand for portable electronic communication devices has been increasing. These devices, such as smartphones, tablets, and smartwatches, have become indispensable communication tools in modern society. They not only provide basic voice calls and text messaging services, but also integrate multiple functions such as internet access, multimedia playback, location navigation, and health monitoring. As the functions gradually increase, existing electronic communication devices will overheat after heavy use or in hot weather. If the internal heat is not dissipated in time, it will cause irreversible damage to the communication device.

[0003] Chinese patent document CN 115277909 A discloses a portable electronic communication device. When the device heats up, it starts a first motor, which drives a crank to rotate. The crank drives a swing arm to move, and the swing arm drives a second slider to reciprocate within a slide rail. At the same time, the swing arm also swings back and forth around a pivot, so that the cleaning brush moves left and right while rotating alternately in both directions to clean the filter. The left end of the swing arm pulls the first slider to reciprocate within a slide groove, and also pulls a disc to rotate. The disc drives the fan blades to rotate circumferentially, and the first slider drives the fan plate to move radially along the disc. The wind direction and speed of the fan blades and fan plate are constantly changing, which easily generates airflow vortices and turbulence, enhances airflow, and improves heat dissipation efficiency.

[0004] While the aforementioned devices can improve heat dissipation efficiency through airflow, the internal structure is quite complex in order to generate airflow, and an additional motor is used as the driving force. This not only wastes the power of the main communication device, but also complicates the overall structure of the device and increases the failure rate.

[0005] Therefore, a portable electronic communication device is needed to solve the above problems. Summary of the Invention

[0006] To address the aforementioned problems, namely the cumbersome and high failure rate of existing cooling systems for communication devices, this invention provides a portable electronic communication device.

[0007] A portable electronic communication device includes a display screen and a communication unit, as well as a motherboard. The motherboard has a mounting hole on its upper surface and a buffer mechanism on its side. The display screen and the communication unit are mounted in the mounting hole via the buffer mechanism. A vibration-energizing mechanism is located inside the motherboard and is connected to the buffer mechanism. A vent is located at one end of the motherboard near the bottom, and the bottom end of the mounting hole communicates with the vent. An air extraction mechanism is located inside the motherboard at the end furthest from the vent, near the bottom. The air inlet of the air extraction mechanism communicates with the vent, and the other end of the air extraction mechanism communicates with the outside of the motherboard. Wearing mechanisms are located on both sides of the motherboard.

[0008] Preferably, the air extraction mechanism includes a turntable, which is rotatably mounted inside the main board at the end away from the vent hole and near the bottom. A swing cavity is formed on the side of the turntable away from the vent hole, and a counterweight is fixedly mounted on the side of the turntable, which slides within the swing cavity.

[0009] Preferably, symmetrical suction chambers are formed on both sides of the turntable near the vent. One end of each suction chamber near the vent is connected to one end of the air inlet via a transfer hole. The other end of the air inlet is connected to the vent. A first one-way valve is installed in each of the transfer holes. The end of each suction chamber away from the vent is connected to the outside of the main board via an air outlet. Two piston plates are fixedly installed on the side of the turntable, and each piston plate slides within one of the two suction chambers. A second one-way valve is installed through each piston plate. The device consists of a turntable, a counterweight, and a piston plate. When worn on the forearm via a wearing mechanism, the end of the turntable is positioned close to the hand. As the arm swings during walking, the counterweight drives the turntable to rotate reciprocally, causing the piston plate to slide back and forth within the suction chamber. Through the action of the first and second one-way valves, gas in the vent is drawn into the suction chamber and then expelled by the piston plate through the outlet. This design utilizes the movement generated by the human body during walking to drive airflow within the vent, cooling the communication unit. This not only achieves energy saving but also features a simple structure and low failure rate.

[0010] Preferably, the communication unit is fixedly installed at the bottom of the display screen, a heat absorption plate is fixedly installed at the bottom of the communication unit, fins are fixedly installed at the bottom of the heat absorption plate, the fins are located in the vent hole, and an air intake filter plate is provided at the end of the vent hole away from the turntable; the heat absorption plate can quickly absorb the heat generated by the communication unit, and the fins facilitate the dissipation of heat.

[0011] Preferably, the buffer mechanism includes four inner grooves, which are respectively opened on the four sides of the mounting hole. An electric telescopic rod is fixedly installed on the inner side of each of the four inner grooves near the middle. The telescopic end of the electric telescopic rod extends into the inner groove and is fixedly installed with a sliding clamp. The sliding clamp slides in the inner groove.

[0012] Preferably, the sliding clamp has a slot for matching the display screen on the side near the mounting hole, a fixing frame is fixedly installed on the side of the display screen, the side of the display screen extends into the slot, and the fixing frame is connected to the inside of the slot by a third spring.

[0013] Preferably, the vibration energizing mechanism includes a vibrating body disposed inside the motherboard. The vibrating body has a movable cavity inside, and a coupling head is disposed inside the movable cavity via a fourth spring. The coupling head is suspended within the movable cavity, and an electrode plate is disposed on the surface of the movable cavity. The electrode plate is connected to a battery on the communication unit. The coupling head is connected to the electric telescopic rod via a wire. By connecting the electric telescopic rod to the coupling head, when the device falls, the coupling head will contact and energize the electrode plate during vibration. Simultaneously, the energized electric telescopic rod will quickly retract the sliding clamp, suspending the display screen under the pull of the third spring. This provides a vibration space for the display screen and the communication unit, reducing the vibration intensity to some extent. The sliding clamp not only serves as a dustproof element during normal operation but also retracts to provide a vibration space for the display screen and the communication unit when the device falls.

[0014] Preferably, the wearable mechanism includes a winding cavity, and the winding cavity is provided on both sides of the inside of the main board. The winding cavity is connected to the outside of the main board through a wristband through-hole. A winding roller is rotatably installed inside the winding cavity, and a wristband is wound on the winding roller. One end of the wristband extends out of the main board through the wristband through-hole.

[0015] Preferably, one end of the winding roller is connected to the main board via a torsion spring, a driven gear is coaxially fixedly mounted on the outer surface of one of the winding rollers near its end, a driven shaft is rotatably mounted inside the main board, a driving gear is coaxially fixedly mounted on the outer surface of the driven shaft, the driving gear meshes with the driven gear, and the driven shaft is connected to the other winding roller via a transmission belt.

[0016] Preferably, the bottom of the main board has a vertical sliding hole, and the bottom of one of the wristband through holes has a horizontal sliding groove. The horizontal sliding groove is connected to the vertical sliding hole. A stop block is slidably installed inside the horizontal sliding groove via a second spring. The upper surface of the stop block abuts against the wristband. A pressing plate is slidably installed inside the vertical sliding hole via a first spring. The inclined surface of the pressing plate abuts against the inclined surface of the stop block. By connecting the two winding rollers through two gears and a transmission belt, it is only necessary to drive the wristband on one winding roller to drive the wristband on the other winding roller at the same time. Moreover, one end of both wristbands can slide outward, which is convenient for fastening the ends of the two wristbands together. By setting the stop block and the pressing plate, it is convenient to push out the wristband that is retracted into the wristband through hole.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. This invention, by setting up a turntable, a counterweight, and a piston plate, allows the device to be worn on the forearm via a wearable mechanism, with one end of the turntable close to the hand. When walking, the counterweight drives the turntable to rotate back and forth as the arm swings, causing the piston plate to slide back and forth within the suction chamber. Through the action of the first and second one-way valves, the gas in the vent is drawn into the suction chamber and then expelled by the piston plate through the vent. This design utilizes the movement generated by the human body during walking to drive airflow within the vent, cooling the communication device. This not only achieves energy saving but also features a simple structure and low failure rate.

[0019] 2. This invention connects the electric telescopic rod to the coupling head. When the device falls, the coupling head will contact the electrode plate and become energized while vibrating. At the same time, the electric telescopic rod will be energized and quickly retract the sliding clamp, causing the display screen to be suspended in the air under the pull of the third spring. This provides a space for vibration for the display screen and the communication body, which can reduce the degree of vibration of the display screen and the communication body to a certain extent. The sliding clamp not only serves as a dustproof function under normal circumstances, but also retracts to provide a space for vibration for the display screen and the communication body when the device falls.

[0020] 3. By connecting two winding rollers through two gears and a transmission belt, the wristband on one winding roller can be driven simultaneously by driving the wristband on the other winding roller. Furthermore, one end of both wristbands can slide outwards, making it easy to fasten the ends of the two wristbands together. By setting up a stop block and a pressing plate, it is easy to push out the wristband that is retracted into the wristband hole. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of the present invention;

[0022] Figure 2This is a schematic diagram of the rear structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the winding cavity structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the winding roller structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the side cross-sectional structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the turntable structure of the present invention;

[0027] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0028] Figure 8 This is a schematic diagram of the internal structure of the vibrating body of the present invention;

[0029] Figure 9 This is a schematic diagram of the heat absorber plate and fin structure of the present invention.

[0030] In the picture:

[0031] 1. Display screen; 2. Communication unit; 3. Main board; 4. Mounting hole; 5. Vent hole; 6. Turntable; 7. Swing chamber; 8. Counterweight; 9. Suction chamber; 10. Transfer hole; 11. Air inlet; 12. First one-way valve; 13. Air outlet; 14. Piston plate; 15. Second one-way valve; 16. Heat absorber plate; 17. Fins; 18. Air inlet filter plate; 19. Inner groove; 20. Electric telescopic rod; 21. Sliding clamp; 22. Slot; 23. Fixing frame; 24. 25. Third spring; 26. Vibrating body; 27. Movable cavity; 28. Fourth spring; 29. ​​Coupler head; 30. Electrode plate; 31. Wire; 32. Winding cavity; 33. Wristband perforation; 34. Winding roller; 35. Wristband; 36. Torsion spring; 37. Driven gear; 38. Driven shaft; 39. Driven gear; 40. Transmission belt; 41. Vertical sliding hole; 42. Horizontal sliding groove; 43. Second spring; 44. Abutting inclined block; 45. First spring; 46. Pressing inclined plate. Detailed Implementation

[0032] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0033] like Figure 1 and Figure 5As shown, this embodiment of the invention discloses a portable electronic communication device, including a display screen 1 and a communication body 2, and also a motherboard 3. The upper surface of the motherboard 3 is provided with a mounting hole 4, and a buffer mechanism is provided on the side of the mounting hole 4. The display screen 1 and the communication body 2 are installed in the mounting hole 4 through the buffer mechanism. A vibration power-on mechanism is provided inside the motherboard 3, and the vibration power-on mechanism is connected to the buffer mechanism. A vent hole 5 is provided at one end of the motherboard 3 near the bottom, and the bottom end of the mounting hole 4 is connected to the vent hole 5. An air extraction mechanism is provided inside the motherboard 3 at the end away from the vent hole 5 near the bottom. The air inlet end of the air extraction mechanism is connected to the vent hole 5, and the other end of the air extraction mechanism is connected to the outside of the motherboard 3. Wearing mechanisms are provided on both sides of the motherboard 3.

[0034] like Figure 6 As shown, the air extraction mechanism includes a turntable 6, which is rotatably installed inside the main board 3 at the end away from the vent 5 and near the bottom. A swing cavity 7 is provided on the side of the turntable 6 away from the vent 5, and a counterweight 8 is fixedly installed on the side of the turntable 6. The counterweight 8 slides in the swing cavity 7.

[0035] like Figure 6 As shown, symmetrical suction chambers 9 are opened on both sides of the turntable 6 near the vent 5. One end of each suction chamber 9 near the vent 5 is connected to one end of the air inlet 11 through a transfer hole 10. The other end of the air inlet 11 is connected to the vent 5. A first one-way valve 12 is installed in each of the two transfer holes 10. The end of the suction chamber 9 away from the vent 5 is connected to the outside of the main board 3 through an air outlet 13. Two piston plates 14 are fixedly installed on the side of the turntable 6. The two piston plates 14 slide in the two suction chambers 9 respectively. A second one-way valve 15 is installed through the piston plates 14. By setting the turntable 6, the counterweight 8 and the piston plate 9, the suction chamber 9 can be connected to the vent 5. When the device is worn on the forearm via the wearing mechanism, the end of the turntable 6 is close to the hand. When walking, as the arm swings, the counterweight 8 drives the turntable 6 to rotate back and forth, which in turn causes the piston plate 14 to slide back and forth in the air extraction chamber 9. Through the action of the first one-way valve 12 and the second one-way valve 15, the gas in the vent 5 is drawn into the air extraction chamber 9, and then pushed out by the piston plate 14 through the air outlet 13. This setting uses the movement generated by the human body when walking to drive the airflow in the vent 5 to cool the communication body 2. It not only achieves the purpose of energy saving, but also has a simple structure and low failure rate.

[0036] like Figure 5 and Figure 9As shown, the communication body 2 is fixedly installed at the bottom of the display screen 1. A heat absorption plate 16 is fixedly installed at the bottom of the communication body 2. A fin 17 is fixedly installed at the bottom of the heat absorption plate 16. The fin 17 is located inside the vent hole 5. An air intake filter plate 18 is provided at the end of the vent hole 5 away from the turntable 6. The heat absorption plate 16 can quickly absorb the heat generated by the communication body 2, and the fin 17 facilitates the dissipation of heat.

[0037] like Figure 5 and Figure 7 As shown, the buffer mechanism includes four inner grooves 19, which are respectively opened on the four sides of the mounting hole 4. An electric telescopic rod 20 is fixedly installed on the inner side of each of the four inner grooves 19 near the middle. The telescopic end of the electric telescopic rod 20 extends into the inner groove 19 and is fixedly installed with a sliding clamp 21. The sliding clamp 21 slides in the inner groove 19.

[0038] like Figure 7 As shown, the sliding clamp 21 has a slot 22 for matching the display screen 1 on the side near the mounting hole 4. A fixing frame 23 is fixedly installed on the side of the display screen 1. The side of the display screen 1 extends into the slot 22. The fixing frame 23 is connected to the inside of the slot 22 by a third spring 24.

[0039] like Figure 1 and Figure 8 As shown, the vibration-energizing mechanism includes a vibrator 25, which is located inside the main board 3. A movable cavity 26 is formed inside the vibrator 25. A coupling head 28 is installed inside the movable cavity 26 via a fourth spring 27. The coupling head 28 is suspended within the movable cavity 26. Electrode plates 29 are provided on the surface of the movable cavity 26 and are connected to the battery on the communication main body 2. The coupling head 28 is connected to the electric telescopic rod 20 via a wire 30. By connecting the electric telescopic rod 20 to the coupling head 28, when the device falls, the coupling head 28 will contact and energize the electrode plates 29 during vibration. Simultaneously, the energized electric telescopic rod 20 will quickly retract the sliding clamp 21, causing the display screen 1 to suspend under the pull of the third spring 24. This provides a vibration space for the display screen 1 and the communication main body 2, reducing the vibration intensity to some extent. The sliding clamp 21 not only serves as a dustproof element during normal operation but also retracts to provide a vibration space for the display screen 1 and the communication main body 2 when the device falls.

[0040] like Figures 1-3 As shown, the wearable mechanism includes a winding cavity 31. The winding cavity 31 is provided inside the main board 3 near both sides. The winding cavity 31 is connected to the outside of the main board 3 through the wristband through hole 32. A winding roller 33 is rotatably installed inside the winding cavity 31. A wristband 34 is wound on the winding roller 33. One end of the wristband 34 passes through the wristband through hole 32 and extends to the outside of the main board 3.

[0041] like Figure 4 As shown, one end of the winding roller 33 is connected to the main board 3 via a torsion spring 35. A driven gear 36 is coaxially fixedly mounted on the outer surface of one of the winding rollers 33 near its end. A driven shaft 37 is rotatably mounted inside the main board 3. A driving gear 38 is coaxially fixedly mounted on the outer surface of the driven shaft 37. The driving gear 38 meshes with the driven gear 36. The driven shaft 37 is connected to the other winding roller 33 via a transmission belt 39.

[0042] like Figure 3 As shown, the bottom of the main board 3 has a vertical sliding hole 40, and the bottom of one of the wristband through holes 32 has a horizontal sliding groove 41. The horizontal sliding groove 41 is connected to the vertical sliding hole 40. The inside of the horizontal sliding groove 41 is slidably installed with a stop block 43 through a second spring 42. The upper surface of the stop block 43 abuts against the wristband 34. The inside of the vertical sliding hole 40 is slidably installed with a pressing plate 45 through a first spring 44. The inclined surface of the pressing plate 45 abuts against the inclined surface of the stop block 43. By connecting the two winding rollers 33 through two gears and a transmission belt 39, it is only necessary to drive the wristband 34 on one winding roller 33 to drive the wristband 34 on the other winding roller 33 at the same time. Moreover, one end of both wristbands 34 can slide outward, which makes it easy to fasten the ends of the two wristbands 34 together. By setting the stop block 43 and the pressing plate 45, it is easy to push out the wristband 34 that is retracted into the wristband through hole 32.

[0043] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A portable electronic communication device, comprising a display screen (1) and a communication main body (2), characterized in that, It also includes a motherboard (3), on the upper surface of which is provided a mounting hole (4), and a buffer mechanism is provided on the side of the mounting hole (4). The display screen (1) and the communication body (2) are installed in the mounting hole (4) through the buffer mechanism. A vibration power supply mechanism is provided inside the motherboard (3), and the vibration power supply mechanism is connected to the buffer mechanism. A vent hole (5) is provided at one end of the motherboard (3) near the bottom. The bottom end of the mounting hole (4) is connected to the vent hole (5). An air extraction mechanism is provided inside the motherboard (3) at the end away from the vent hole (5) near the bottom. The air inlet of the air extraction mechanism is connected to the vent hole (5), and the other end of the air extraction mechanism is connected to the outside of the motherboard (3). Wearing mechanisms are provided on both sides of the motherboard (3).

2. The portable electronic communication device according to claim 1, characterized in that, The air extraction mechanism includes a turntable (6), which is rotatably mounted inside the main board (3) at the end away from the vent (5) near the bottom. A swing cavity (7) is provided on the side of the turntable (6) away from the vent (5). A counterweight (8) is fixedly installed on the side of the turntable (6) and slides in the swing cavity (7).

3. A portable electronic communication device according to claim 2, characterized in that, The turntable (6) has symmetrically arranged suction chambers (9) on both sides near the vent (5). The two suction chambers (9) near the vent (5) are connected to one end of the air inlet (11) through a transfer hole (10). The other end of the air inlet (11) is connected to the vent (5). A first one-way valve (12) is provided in each of the two transfer holes (10). The suction chamber (9) away from the vent (5) is connected to the outside of the main board (3) through an air outlet (13). Two piston plates (14) are fixedly installed on the side of the turntable (6). The two piston plates (14) slide in the two suction chambers (9). A second one-way valve (15) is provided through the piston plates (14).

4. A portable electronic communication device according to claim 3, characterized in that, The communication body (2) is fixedly installed at the bottom of the display screen (1). A heat absorption plate (16) is fixedly installed at the bottom of the communication body (2). A fin (17) is fixedly installed at the bottom of the heat absorption plate (16). The fin (17) is located inside the vent (5). An air intake filter plate (18) is provided at the end of the vent (5) away from the turntable (6).

5. A portable electronic communication device according to claim 4, characterized in that, The buffer mechanism includes four inner grooves (19), which are respectively opened on the four sides of the mounting hole (4). An electric telescopic rod (20) is fixedly installed on the inner side of each of the four inner grooves (19) near the middle. The telescopic end of the electric telescopic rod (20) extends into the inner groove (19) and is fixedly installed with a sliding clamp (21). The sliding clamp (21) slides in the inner groove (19).

6. A portable electronic communication device according to claim 5, characterized in that, The sliding clamp (21) has a slot (22) for matching the display screen (1) on the side near the mounting hole (4). A fixing frame (23) is fixedly installed on the side of the display screen (1). The side of the display screen (1) extends into the slot (22). The fixing frame (23) is connected to the inside of the slot (22) by a third spring (24).

7. A portable electronic communication device according to claim 6, characterized in that, The vibration-energizing mechanism includes a vibrating body (25), which is disposed inside the main board (3). The vibrating body (25) has a movable cavity (26) inside. A coupling head (28) is disposed inside the movable cavity (26) via a fourth spring (27). The coupling head (28) is suspended inside the movable cavity (26). An electrode plate (29) is disposed on the surface of the movable cavity (26). The electrode plate (29) is connected to the battery on the communication main body (2). The coupling head (28) is connected to the electric telescopic rod (20) via a wire (30).

8. A portable electronic communication device according to claim 7, characterized in that, The wearable mechanism includes a winding cavity (31). The winding cavity (31) is provided inside the main board (3) near both sides. The winding cavity (31) is connected to the outside of the main board (3) through a wristband hole (32). A winding roller (33) is rotatably installed inside the winding cavity (31). A wristband (34) is wound on the winding roller (33). One end of the wristband (34) passes through the wristband hole (32) and extends to the outside of the main board (3).

9. A portable electronic communication device according to claim 8, characterized in that, One end of the winding roller (33) is connected to the main board (3) by a torsion spring (35). A driven gear (36) is coaxially fixedly installed on the outer surface of one of the winding rollers (33) near the end. A driven shaft (37) is rotatably installed inside the main board (3). A driving gear (38) is coaxially fixedly installed on the outer surface of the driven shaft (37). The driving gear (38) meshes with the driven gear (36). The driven shaft (37) is connected to the other winding roller (33) via a transmission belt (39).

10. A portable electronic communication device according to claim 9, characterized in that, The bottom of the main board (3) is provided with a vertical sliding hole (40), and the bottom of one of the wristband through holes (32) is provided with a horizontal sliding groove (41). The horizontal sliding groove (41) is connected to the vertical sliding hole (40). A push-up block (43) is slidably installed inside the horizontal sliding groove (41) through a second spring (42). The upper surface of the push-up block (43) abuts against the wristband (34). A pressing plate (45) is slidably installed inside the vertical sliding hole (40) through a first spring (44). The inclined surface of the pressing plate (45) abuts against the inclined surface of the push-up block (43).

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