Photovoltaic power supply magnetically controlled digital display type transmission

Abstract

The utility model discloses a magnetron digital display type transmission of photovoltaic power supply, including transmission main part, the transmission main part is equipped with gear change drive structure and variable speed turntable rotation, gear change drive structure controls variable speed turntable to rotate to the gear increase direction or gear reduction direction through transmission structure, transmission main part is equipped with digital display screen and with digital display screen electric connection's magnetic encoding structure, and the magnetic encoding structure is used for capturing the rotation position of variable speed turntable, and through digital display screen shows the gear of variable speed turntable at corresponding position and rotates to, transmission main part is equipped with photovoltaic power generation device, and photovoltaic power generation device is used for converting light energy into electric energy and supplies power to digital display screen and sensing control component. Have green environmental protection, the rider can fast accurate acquisition gear information, the operation difficulty is low and is favorable to the hand, improves the effect of the riding safety.

Description

Technical Field

[0001] This utility model relates to the field of bicycle gearbox technology, and in particular to a photovoltaic-powered magnetic control digital display gearbox. Background Technology

[0002] Chinese patent CN209126907U discloses a bicycle gear shifting device, including a front frame, a handlebar fixedly mounted on the upper end of the front frame, a mounting bracket on the inner end of the handlebar, and the mounting bracket fixedly mounted on the front frame. A ring-shaped plastic protective sleeve is provided on the outer side of the handlebar, with one end fixedly connected to the mounting bracket and the other end fixedly connected to the outer end of the handlebar. A mounting groove is formed on one side of the inner wall of the plastic protective sleeve. A brake lever is located inside the plastic protective sleeve, with one end located inside the mounting groove and rotatably connected to the plastic protective sleeve by a bolt. A brake cable is fixedly connected to one end of the handle. A controller is fixedly installed inside one side of the mounting bracket. The controller end face is equipped with an LCD screen and several gear buttons. The gear buttons are located on one side of the LCD screen and are electrically connected to the LCD screen. A small drive motor is fixedly installed in the middle of the mounting bracket. A PLC controller is fixedly installed on the outside of the drive motor. A speed controller is fixedly connected to the output end of the drive motor. The speed controller is located on the other side of the mounting bracket. A speed switching pull rope is fixedly connected to the outside of the speed controller. A storage battery is fixedly installed inside the upper end of the mounting bracket.

[0003] However, the above-mentioned bicycle gear shifting device has the following drawbacks: the bicycle gear shifting device is powered by a storage battery to power the controller, LCD screen and PLC controller. The storage battery needs to be charged frequently, which is inconvenient. Other existing technologies also use dry cell batteries for power supply. The advantage of dry cell batteries is that spare batteries can be carried around for battery replacement to replenish power. However, discarded dry cell batteries cause serious environmental pollution and are not environmentally friendly, so improvements are urgently needed. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic-powered magnetic control digital display gearbox, which is environmentally friendly, allows riders to quickly and accurately obtain gear information, is easy to operate and learn, and improves riding safety.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a photovoltaic-powered magnetic control digital display transmission, including a transmission body, on which a gear shifting drive structure and a gear shifting turntable are rotatably provided, the gear shifting drive structure and the gear shifting turntable are connected by a transmission structure, and the gear shifting drive structure controls the gear shifting turntable to rotate in the upshifting or downshifting direction through the transmission structure. The main body of the transmission is equipped with a digital display screen and a magnetic coding structure electrically connected to the digital display screen. The magnetic coding structure is used to capture the rotation position of the gear shift turntable and display the gear position of the gear shift turntable when it has rotated to the corresponding position through the digital display screen. The main body of the transmission is equipped with a photovoltaic power generation device, which is used to convert light energy into electrical energy and power the digital display screen and magnetic coding structure.

[0006] By adopting the above technical solution, riders utilize the synergistic effect of the shift drive structure and transmission structure to control the shift turntable to rotate in the upshift or downshift direction. When the shift turntable drives the magnetic element to rotate, the magnetic encoding structure can sense and detect changes in the rotation angle and position of the shift turntable, and intuitively display the corresponding gear position on the digital display screen. This allows riders to quickly and accurately obtain the gear position information of the gearbox. At the same time, the electronic gear display method allows riders to directly confirm the gear position simply by looking at the digital display screen, greatly reducing the experience requirements for shifting operations for beginners, making it easier to get started, and reducing safety accidents caused by gear mismatch due to frequent incorrect shifting. In addition, this gearbox uses a photovoltaic power generation device to convert light energy into electrical energy, thereby powering the digital display screen and sensing control components, solving the hassle of frequent battery swapping or charging, and also reducing the environmental pollution caused by waste batteries, which is beneficial to environmental protection. It has the effects of being green and environmentally friendly, allowing riders to quickly and accurately obtain gear information, being easy to operate and easy to get started, and improving riding safety.

[0007] A further feature of this invention is that the photovoltaic power generation device includes a storage battery and a solar panel, the input end of the storage battery is electrically connected to the solar panel, and the output end of the storage battery is electrically connected to the digital display screen and the sensing and control components.

[0008] By adopting the above technical solution, the solar panel can receive sunlight from the surrounding environment and convert it into electrical energy stored in the battery. During the ride, the battery can power the digital display screen and sensor control components.

[0009] A further feature of this invention is that the transmission body includes an upper cover and a lower cover, the upper surface of the upper cover includes a top planar area and a sloping surface area, the solar panel is installed in the top planar area, and the digital display screen is installed in the sloping surface area.

[0010] By adopting the above technical solution, the solar panel is installed on the top flat area of ​​the upper cover, which can ensure a larger light receiving area and realize rapid replenishment of the battery. The digital display screen set on the slope is more conducive to riders to observe and obtain real-time gear status.

[0011] A further feature of this invention is that the magnetic encoding structure includes a magnetic element and a sensing and control component. The magnetic element is disposed on the speed-changing turntable and rotates synchronously with the speed-changing turntable. The sensing and control component is electrically connected to the digital display screen, and the sensing and control component is inductively coupled with the magnetic element.

[0012] By adopting the above technical solution, when the gear shift turntable drives the magnetic element to rotate, the sensing and control component can sense and detect the rotation angle and position change of the magnetic element on the gear shift turntable, and intuitively display the corresponding gear on the digital display screen. Compared with the traditional mechanical transmission method, the magnetic induction detection method avoids the situation where mechanical parts are prone to interference and jamming, thus improving riding safety.

[0013] A further feature of this invention is that the variable speed turntable includes a coil base and a magnet mounting part integrally connected to the coil base. A mounting hole is provided at the rotation center position of the magnet mounting part, and the magnetic element is mounted on the magnet mounting part through the mounting hole.

[0014] By adopting the above technical solution, when the coil base rotates, it will drive the magnetic element to rotate simultaneously through the magnet mounting part, which makes it convenient for the sensing and control components to detect and obtain the rotation position of the magnetic element. The speed change turntable adopts a partitioned structure of the coil base and the magnet mounting part, so that the speed change cable is connected to the coil base and the magnetic element is installed in the magnet mounting part, realizing functional partitioning and avoiding interference between the speed change cable and the magnetic element when the speed change cable is wound on the speed change turntable.

[0015] A further feature of this invention is that the sensing and control assembly includes a control board and a magnetic sensor integrated on the control board. The magnetic sensor is inductively coupled with the magnetic element, and the magnetic sensor is arranged along the axial direction of the speed-changing turntable and is spaced apart from the magnetic element.

[0016] By adopting the above technical solution and integrating the magnetic sensor onto the control board, the installation stability of the magnetic sensor and the overall structural compactness of the transmission can be improved.

[0017] A further feature of this invention is that the transmission structure includes a geared disc connected to the gearbox on the gearbox turntable, and the gear shifting drive structure includes an upshift drive assembly, a downshift drive assembly, and a main return torsion spring. The main return torsion spring is connected between the gearbox turntable and the transmission body, and the main return torsion spring has a tendency to drive the geared disc to rotate in the downshifting direction. The upshift drive assembly, the downshift drive assembly, and the main return torsion spring cooperate to drive the gearbox turntable to rotate in the upshifting or downshifting direction.

[0018] By adopting the above technical solution, when the transmission is shifted up using the upshift drive component or downshifted using the downshift drive component, the gearbox will drive the gearshift turntable to rotate in the corresponding upshift or downshift direction. This will cause the magnetic element mounted on the gearshift turntable to rotate in the corresponding direction, so that the sensing and control component can detect the rotation direction and position change of the magnetic element and then display the corresponding gear on the digital display screen.

[0019] A further feature of this invention is that the upshift drive assembly includes upshift pawls and an upshift lever that drives the upshift pawls to rotate. An upshift lever return torsion spring is provided between the upshift lever and the transmission body. The transmission gear has upshift teeth that engage with the upshift pawls. An upshift return torsion spring is connected between the upshift pawls and the transmission body. The upshift return torsion spring has an elastic return force that drives the upshift pawls to prevent the transmission gear from rotating in the downshift direction.

[0020] A further feature of this invention is that the downshift drive assembly includes a downshift pawl and a downshift lever that drives the downshift pawl to rotate. A downshift lever return torsion spring is provided between the downshift lever and the transmission body. The transmission gear plate is provided with downshift teeth that are linked to the downshift pawl. A downshift return torsion spring is connected between the downshift pawl and the transmission body. The downshift return torsion spring always has an elastic driving force that drives the downshift pawl to mesh with the downshift teeth.

[0021] A further feature of this invention is that the gear shift turntable includes a coil base and a magnet mounting portion integrally connected to the coil base, with a clearance gap between the magnet mounting portion and the coil base. The shift lever and shift pawl are rotatably mounted on the transmission body via a shift shaft. The gear shift turntable is rotatably connected to the transmission body via a main shaft. A limit rod is connected between the main shaft and the shift shaft. One end of the limit rod is rotatably connected to the main shaft, and the other end of the limit rod is rotatably connected to the shift shaft. The end of the limit rod connected to the main shaft is located within the clearance gap.

[0022] By adopting the above technical solution, the limit rod can accurately position the distance between the main shaft and the shift shaft, preventing the shift shaft from shifting relative to the main shaft when the shift lever rotates, thereby improving the operational stability and service life of the transmission.

[0023] In summary, this utility model has the following beneficial effects: The system employs a shift drive structure and shift disc that rotate on the main body of the gearbox. A non-rotating connection is made to the shift gear at the bottom of the shift disc. The shift disc and shift gear are rotatably connected to the main body of the gearbox via a main shaft. The shift drive structure is connected to the shift disc via the shift gear. The rider uses the synergy between the shift drive structure and the shift gear to control the shift disc's rotation in the upshift or downshift direction. When the shift disc drives the magnetic element to rotate, the sensing and control components can detect the changes in the rotation angle and position of the magnetic element on the shift disc and display the corresponding gear on a digital display screen, allowing the rider to quickly and accurately select the gear. The gear selector's gear information, displayed electronically, allows riders to directly confirm the gear position via the digital screen, significantly reducing the experience required for beginners and making it easier to learn. This also reduces safety accidents caused by frequent incorrect gear shifting leading to gear mismatch. Furthermore, the gear selector utilizes a photovoltaic power generation device to convert light energy into electrical energy, powering the digital display and sensor control components. This eliminates the hassle of frequent battery swapping or charging, while also reducing environmental pollution from discarded batteries, thus contributing to environmental protection. It is green and environmentally friendly, allows riders to quickly and accurately obtain gear information, is easy to operate, and improves riding safety. Attached Figure Description

[0024] Figure 1 This is an overall structural diagram of the present invention.

[0025] Figure 2 This is an exploded view of this utility model.

[0026] Figure 3 This is a utility model Figure 2 Another perspective.

[0027] Figure 4 This is an exploded view of the entire utility model; the lower casing is not shown.

[0028] Figure 5 This is a utility model Figure 4 Another perspective.

[0029] Figure 6 This is a utility model Figure 1 A longitudinal sectional view.

[0030] Figure 7 This is a utility model Figure 6 A magnified view of a portion of region A in the middle.

[0031] Figure 8 This is the circuit schematic diagram of this utility model.

[0032] In the diagram: 1. Gearbox body; 11. Upper cover; 1101. Battery mounting slot; 1102. Controller mounting slot; 111. Top flat area; 112. Sloping surface area; 12. Lower cover; 13. Upshift shaft; 14. Main shaft; 141. Anti-detachment part; 15. Limiting rod; 16. Trigger switch; 2. Gearbox turntable; 20. Clearance clearance; 21. Coil base; 22. Magnet mounting part; 221. Mounting hole; 23. Main return torsion spring; 24. Anti-rotation block; 3. Gearbox; 30. Anti-rotation groove; 31. Upshift gear; 32. Downshift gear; 4. Digital display screen; 5. Magnetic coding structure; 51. Magnetic element; 52. Sensing control assembly; 521. Control board; 522. Magnetic sensor; 6. Photovoltaic power generation device; 61. Storage battery; 62. Solar panel; 7. Upshift drive assembly; 71. Upshift pawl; 710. Upshift reset torsion spring; 711. Locking pawl; 712. Stopping pawl; 713. Push block; 72. Upshift lever; 720. Upshift lever reset torsion spring; 721. Upshift rocker arm; 722. Downshift disc; 7221. Drive block; 8. Downshift drive assembly; 81. Downshift pawl; 810. Downshift reset torsion spring; 811. Downshift shaft; 82. Downshift lever; 820. Downshift lever reset torsion spring; 821. Downshift rocker arm; 822. Downshift disc; 9. Brake handle. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] A photovoltaic-powered magnetically controlled digital display transmission, such as Figures 1-5 As shown, the transmission includes a main body 1, on which a shift drive structure and a shift turntable 2 are rotatably mounted. The shift drive structure and the shift turntable 2 are connected by a transmission structure. The shift drive structure controls the rotation of the shift turntable 2 in the upshift or downshift direction through the transmission structure. The main body 1 has a digital display screen 4 and a magnetic encoding structure 5 electrically connected to the digital display screen 4. The magnetic encoding structure 5 includes a magnetic element 51 and a sensing and control component 52. The magnetic element 51 is mounted on the shift turntable 2 and rotates synchronously with the shift turntable 2. The sensing and control component 52 is used to detect the rotational position of the magnetic element 51. The gear corresponding to the position of the gear shift dial 2 is displayed on the digital display screen 4; the gearbox body 1 is equipped with a photovoltaic power generation device 6, which is used to convert light energy into electrical energy and power the digital display screen 4 and the sensor control component 52; a brake handle 9 is rotatably mounted on the gearbox body 1, which is used to connect to and pull the brake cable to brake; the gearbox body 1 is equipped with a trigger switch 16 that is linked to the brake handle 9. When the rider brakes, the brake handle 9 will press the trigger switch 16, thereby triggering the corresponding function on the bicycle, or cutting off the power to improve braking safety.

[0035] like Figures 1-6 As shown, the photovoltaic power generation device 6 includes a battery 61 and a solar panel 62. The input end of the battery 61 is electrically connected to the solar panel 62, and the output end of the battery 61 is electrically connected to the digital display screen 4 and the sensing and control component 52. The solar panel 62 can receive ambient light and convert it into electrical energy, which is stored in the battery 61. During riding, the battery 61 can power the digital display screen 4 and the sensing and control component 52. The gearbox body 1 includes an upper cover 11 and a lower cover 12. The bottom of the upper cover 11 has a battery mounting slot 1101 for installing the battery 61. The upper surface of the upper cover 11 includes a top flat area 111 and a sloping area 112. The solar panel 62 is installed on the top flat area 111, and the digital display screen 4 is installed on the slope area 112 facing the direction of the rider's head. Installing the solar panel 62 on the top flat area 111 of the upper cover 11 can ensure a larger light receiving area and realize rapid charging of the battery 61. The digital display screen 4 set on the slope is more conducive to the rider to observe and obtain the real-time gear status. In this embodiment, the outer shell of the gearbox body 1 is formed by the sealed combination of the upper cover 11 and the lower cover 12, and the digital display screen 4 is made of scratch-resistant and wear-resistant tempered glass material. At the same time, the waterproof rating of the gearbox body 1 is guaranteed to be IPX6 or above, which meets the adaptability to extreme weather or road conditions.

[0036] like Figures 2-7 As shown, the speed-changing turntable 2 includes a coil base 21 and a magnet mounting part 22 integrally connected to the coil base 21. A mounting hole 221 is provided at the rotation center of the magnet mounting part 22. The magnetic element 51 is mounted on the magnet mounting part 22 through the mounting hole 221. When the coil base 21 rotates, it drives the magnetic element 51 to rotate simultaneously through the magnet mounting part 22, facilitating the sensing and control component 52 to detect and obtain the rotational position of the magnetic element 51. The speed-changing turntable 2 adopts a partitioned structure for the coil base 21 and the magnet mounting part 22, so that the speed-changing cable is connected to the coil base 21, while the magnetic element 51 is mounted on the magnet mounting part 22, achieving functional partitioning and preventing the speed-changing cable from being... When the winding of the cable on the gear shift turntable 2 occurs, it interferes with the magnetic element 51. The sensing and control assembly 52 includes a control board 521 and a magnetic sensor 522 integrated on the control board 521. The magnetic sensor 522 is inductively coupled with the magnetic element 51, and the magnetic sensor 522 is arranged along the axial direction of the gear shift turntable 2 and is spaced apart from the magnetic element 51. Integrating the magnetic sensor 522 on the control board 521 can improve the installation stability of the magnetic sensor 522 and the overall structural compactness of the gear shifter. The bottom of the upper cover 11 is provided with a controller mounting slot 1102 for mounting the control board 521. In this embodiment, a circuit board electrically connected to the control board 521 is installed on the back of the digital display screen 4.

[0037] like Figures 2-5 and Figure 7As shown, the transmission structure includes a geared disc 3 mounted on the bottom of the gearbox 2. An anti-rotation block 24 is provided at the bottom of the gearbox 2, and an anti-rotation groove 30 is provided on the geared disc 3 corresponding to the anti-rotation block 24. The anti-rotation block 24 and the anti-rotation groove 30 engage to prevent rotation, thus preventing the geared disc 3 from rotating and connecting it to the bottom of the gearbox 2. The gear shifting drive structure includes an upshift drive assembly 7, a downshift drive assembly 8, and a main return torsion spring 23. The main return torsion spring 23 is connected between the gearbox 2 and the transmission body 1, and has a tendency to drive the geared disc 3 to rotate in the downshifting direction. The upshift drive assembly 7, the downshift drive assembly 8, and the main return torsion spring 23 work together. In conjunction with the gearbox, the gearbox 3 drives the gearbox 2 to rotate in the upshift or downshift direction. When the gearbox is upshifted via the upshift drive assembly 7 or downshifted via the downshift drive assembly 8, the gearbox 3 drives the gearbox 2 to rotate in the corresponding upshift or downshift direction. This, in turn, drives the magnetic element 51 mounted on the gearbox 2 to rotate in the corresponding direction. The sensing and control assembly 52 detects the changes in the rotation direction and position of the magnetic element 51, and then displays the corresponding gear on the digital display screen 4. The upshift drive assembly 7 includes upshift pawls 71 and an upshift lever that drives the upshift pawls 71 to rotate. 72. An upshift lever 72 is provided with an upshift lever return torsion spring 720 between itself and the transmission body 1. The transmission gear 3 is provided with upshift teeth 31 that engage with the upshift pawl 71. The upshift pawl 71 is connected to the transmission body 1 by the upshift return torsion spring 710, which has an elastic return force that drives the upshift pawl 71 to prevent the transmission gear 3 from rotating in the downshift direction. The downshift drive assembly 8 includes a downshift pawl 81 and a downshift lever 82 that drives the downshift pawl 81 to rotate. The downshift lever 82 is provided with an upshift lever return torsion spring 820 between itself and the transmission body 1. The transmission gear 3 is provided with downshift teeth 31 that are linked to the downshift pawl 81. 2. A downshifting reset torsion spring 810 is connected between the downshifting pawl 81 and the transmission body 1. The downshifting reset torsion spring 810 always has an elastic driving force that drives the downshifting pawl 81 and the downshifting gear 32 to mesh with each other. In this embodiment, the main reset torsion spring 23 and the downshifting reset torsion spring 810 are respectively located on the upper and lower sides of the lower cover 12. The upshifting pawl 71 includes a locking pawl part 711 and a stopping pawl part 712. The upshifting lever 72 drives the upshifting pawl 71 to rotate, so that the locking pawl part 711 rotates from the meshing position to the disengaged position relative to the upshifting gear 31, and at the same time, the stopping pawl part 712 rotates from the stopping position to the disengaged position relative to the upshifting gear 31.

[0038] like Figures 4-5As shown, the upshift lever 72 includes an integrally connected upshift rocker arm 721 and an upshift disc portion. The upshift pawl 71 is provided with a push block 713, and the upshift disc portion is provided with a drive block 7221 corresponding to the push block 713. The drive block 7221 and the push block 713 push and cooperate to drive the upshift pawl 71 to rotate and to separate the upshift pawl 71 from the upshift ratchet on the gearbox 3. The downshift lever 82 includes an integrally connected downshift rocker arm 821 and a downshift disc portion 822722. The downshift disc portion 822722 is rotatably connected to the transmission body 1 via the main shaft 14. The downshift reset torsion spring 810 always has a tendency to drive the downshift pawl 81 to engage with the downshift ratchet.

[0039] like Figures 1-7 As shown, a clearance gap 20 is formed between the magnet mounting part 22 and the coil base 21. The upshift lever 72 and the upshift pawl 71 are rotatably mounted on the transmission body 1 via the upshift shaft 13. The gear shift turntable 2 is rotatably connected to the transmission body 1 via the main shaft 14. A limit rod 15 is connected between the main shaft 14 and the upshift shaft 13. One end of the limit rod 15 is rotatably connected to the main shaft 14, and the other end is rotatably connected to the upshift shaft 13. The end of the limit rod 15 connected to the main shaft is located within the clearance gap 20. The limit rod 15 can accurately position the distance between the main shaft 14 and the upshift shaft 13, preventing the upshift lever 72 from causing the upshift shaft 13 to shift relative to the main shaft 14 when it rotates, thus improving the operational stability and service life of the transmission. The downshift lever 82 is rotatably connected to the transmission body 1 via the main shaft 14, and the downshift pawl 81 is connected to the downshift shaft 8... 11 is rotatably connected to the downshift lever 82, and the downshift shaft 811 is eccentrically positioned with respect to the main shaft 14. Pressing the downshift lever 82 causes it to rotate relative to the main shaft 14. The downshift shaft 811 on the downshift lever 82, which is eccentrically positioned with respect to the main shaft 14, drives the downshift pawl 81 to rotate in the same direction relative to the main shaft 14. During this process, the downshift reset torsion spring 810 continuously drives the downshift pawl 81 to mesh with the downshift teeth 32 on the gearbox 3. The claw 81 rotates around the downshift shaft 811 and pushes the gearbox 3 to rotate in the downshift direction. In this embodiment, the upper end of the main shaft 14 extends radially outward to form an anti-detachment part 141. The anti-detachment part 141 is placed in the clearance gap 20. When the main shaft 14 is installed in the shaft hole of the gearbox 2, the anti-detachment part 141 is anti-detached from the limit rod 15 to prevent the limit rod 15 from coming out of the clearance gap 20 at one end of the main shaft 14.

[0040] like Figure 8As shown, the power supply circuit includes a chip DW01A and a linear regulator U3. The chip DW01A protects the normal charging and discharging of the battery 61, and the linear regulator U3 regulates the input voltage to a 3.3V output voltage. The power supply circuit has ports P2 and P3. Port P2 is connected to the battery 61, and port P3 is connected to the solar panel 62. Pin 2 of port P3 is connected to the circuit's ground point, and pin 1 of port P3 is connected in sequence to diode D1, resistor R3, and pin 1 of port P2, converting the solar input current from the solar panel 62 to charge the battery 61 unidirectionally. At the same time, the linear regulator U3 converts the input voltage into a stable 3.3V output voltage. In this embodiment, the battery... Battery 61 is preferably a lithium battery. Linear regulator U3 is a low-dropout linear regulator, model HT7533. In some embodiments, other linear regulators with the same function can be used instead. Pin 1 of chip DW01A is the OD output pin for discharge control, connected to the gate of N-MOS transistor Q1. Pin 3 of chip DW01A is the OC output pin for charging control, connected to the gate of N-MOS transistor Q2. N-MOS transistors Q1 and Q2 are connected sequentially. The source of N-MOS transistor Q1 is connected to pin 2 of port P2, i.e., connected to the negative terminal of battery 61. The source of S-MOSFET Q2 is connected to ground. Pin 2 of chip DW01A is the CSI input pin used for charging detection. Pin 2 of chip DW01A is connected to resistor R12 and then between the source of N-MOSFET Q2 and ground to detect the charging status of battery 61. Pin 5 of chip DW01A is the positive power supply pin (VDD), and pin 6 is the negative power supply pin (VSS). A capacitor C7 is connected in parallel between pins 5 and 6 of chip DW01A. Pin 5 of chip DW01A is also connected to pin 1 of port P2 (the positive terminal of battery 61) after connecting resistor R11, thus connecting to the charging and discharging of battery 61 and preventing overcharging, over-discharging, and overcurrent. When the input voltage at pin 5 of DW01A is between 2.5V and 4.3V, pins 1 and 3 of chip DW01A both output a high level, and the input voltage at pin 2 is 0. At this time, both N-MOS transistors Q1 and Q2 are in the conducting state, and the ground point is connected to the negative terminal of battery 61. The positive and negative terminals of battery 61 are in a conducting state, and battery 61 discharges normally in the power supply circuit. The input voltage of linear regulator U3 is constant, and the output voltage of linear regulator U3 is a stable 3.3V DC voltage. Battery 61 continues to discharge power through linear regulator U3, and the voltage gradually decreases. The input voltage at pin 5 of chip DW01A decreases to 2.5V.Below 3V, the output voltage of pin 1 of chip DW01A is 0, N-MOS transistor Q1 is cut off, the positive and negative terminals of battery 61 are disconnected, battery 61 stops discharging, and over-discharge protection is implemented. After the voltage of battery 61 returns to normal, pin 1 outputs a high level, and N-MOS transistor Q1 is turned on. When the current converted by solar panel 62 is used for charging, pin 3 of chip DW01A maintains a high output level, N-MOS transistor Q2 is turned on, and the ground point is connected to the negative terminal of battery 61 to charge battery 61. When the voltage of battery 61 exceeds 4.4V due to charging, the output voltage of pin 3 of chip DW01A drops to 0, N-MOS transistor Q2 is cut off, charging stops, and overcharge protection is implemented. When battery 61 is discharging, the input voltage at pin 2 of chip DW01A is greater than the discharge protection voltage, the output voltage at pin 1 of chip DW01A drops to 0, N-MOS transistor Q1 is cut off, discharging stops, and overcurrent protection is activated. When battery 61 is charging, the input voltage at pin 2 of chip DW01A is lower than the charging protection voltage, the output voltage at pin 3 of chip DW01A drops to 0, N-MOS transistor Q2 is cut off, charging stops, and overcurrent protection is activated. Solar panel 62 and power circuit convert sunlight into electrical energy and output a stable voltage to power digital display panel 106. Even on cloudy days or under trees, it can slowly charge through diffused light, achieving continuous "power while riding" capability.

[0041] The transmission's shifting principle is as follows: In the initial position, the upshift reset torsion spring 710 drives the locking pawl 711 of the upshift pawl 71 to engage with the upshift teeth 31 of the transmission gear 3 to prevent rotation. The downshift reset torsion spring 810 drives the downshift pawl 81 to engage with the downshift teeth 32 of the transmission gear 3 to prevent rotation. When upshifting is required, pulling the upshift lever 72 drives the upshift pawl 71 to rotate, causing the locking pawl 711 to disengage from the upshift teeth 31 of the transmission gear 3. The main reset torsion spring 23 then drives the transmission disc... 2. The transmission gear 3 rotates in the upshift direction, utilizing the guide slope between the downshift pawl 81 and the downshift teeth 32 to overcome the elastic force of the upshift reset torsion spring 710, and drives the downshift pawl 81 to rotate relative to the upshift shaft 13 away from the downshift teeth 32. This causes the downshift pawl 81 to separate from the downshift teeth 32, realizing the upshift operation. After upshifting one level, the upshift teeth 31 corresponding to the higher gear engage with the stop pawl 712, which has rotated to the stop position, to prevent... When the transmission gear 3 is prevented from rotating too far in the upshift direction, the tension on the upshift lever 72 is removed. The upshift lever reset torsion spring 720 drives the upshift lever 72 to reset, the upshift reset torsion spring 710 drives the upshift pawl 71 to reset, and the downshift reset torsion spring 810 drives the downshift pawl 81 to reset. This resets the locking pawl 711 and the stop pawl 712 to their initial positions, achieving locking and positioning of the transmission gear 3. When downshifting is required, the downshift lever 82 is pushed to drive the downshift pawl 81 to... When the main shaft 14 rotates, the downshifting torsion spring drives the downshifting pawl 81 to rotate relative to the downshifting shaft 811, causing the downshifting pawl 81 to abut against the downshifting teeth 32 of the gearbox 3. This pushes the gearbox 3 to rotate the gearbox 2 in the downshifting direction. During the downshifting process, the main return torsion spring 23 is gradually compressed, and the thrust of the downshift lever 82 on the gearbox 3 is greater than the elastic force of the upshift return torsion spring 710. This allows the gearbox 3 to push the upshifting pawl 71 to rotate to the avoidance state, thereby realizing the downshifting operation.

[0042] The basic working principle of this utility model is as follows: A gear shifting drive structure and a gear shifting disc 2 are rotatably mounted on the main body 1 of the gearbox. The bottom of the gear shifting disc 2 is connected to a gear shifting gear 3. The gear shifting disc 2 and the gear shifting gear 3 are rotatably connected to the main body 1 of the gearbox via a main shaft 14. The gear shifting drive structure is connected to the gear shifting disc 2 via the gear shifting gear 3. The rider uses the synergistic effect of the gear shifting drive structure and the gear shifting gear to control the gear shifting disc 2 to rotate in the upshifting or downshifting direction. When the gear shifting disc 2 drives the magnetic element 51 to rotate, the sensing and control component 52 can sense and detect the change in the rotation angle of the magnetic element 51 on the gear shifting disc 2, and display the corresponding gear position of the gear shifting disc 2 intuitively on the digital display screen 4, which is conducive to the rider quickly and accurately obtaining the gear position information of the gearbox. At the same time, the magnetic induction detection... Compared to traditional mechanical transmission methods, this measurement method avoids the possibility of mechanical parts interfering with each other and getting stuck, thus improving riding safety. Furthermore, the electronic gear display allows riders to directly confirm the gear position via the digital display screen 4, significantly reducing the experience required for beginners and making it easier to learn. This also reduces safety accidents caused by frequent incorrect gear shifting leading to gear mismatch. In addition, this gearbox utilizes a photovoltaic power generation device 6 to convert light energy into electrical energy, thereby powering the digital display screen 4 and the sensor control components 52. This eliminates the hassle of frequent battery swapping or charging, while also reducing the environmental pollution caused by discarded batteries, contributing to environmental protection. It is green and environmentally friendly, allows riders to quickly and accurately obtain gear information, is easy to operate and learn, and improves riding safety.

[0043] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A photovoltaic-powered magnetically controlled digital display transmission, comprising a transmission body (1), characterized in that: The main body (1) of the transmission is rotatably provided with a gear shift drive structure and a gear shift turntable (2). The gear shift drive structure and the gear shift turntable (2) are connected by a transmission structure. The gear shift drive structure controls the gear shift turntable (2) to rotate in the upshift or downshift direction through the transmission structure. The main body (1) of the transmission is provided with a digital display screen (4) and a magnetic coding structure (5) electrically connected to the digital display screen (4). The magnetic coding structure (5) is used to capture the rotation position of the gear shift turntable (2) and display the gear position of the gear shift turntable (2) when it rotates to the corresponding position through the digital display screen (4). The main body (1) of the transmission is provided with a photovoltaic power generation device (6), which is used to convert light energy into electrical energy and supply power to the digital display screen (4) and the magnetic coding structure (5).

2. The photovoltaic-powered magnetically controlled digital display transmission according to claim 1, characterized in that: The photovoltaic power generation device (6) includes a storage battery (61) and a solar panel (62). The input end of the storage battery (61) is electrically connected to the solar panel (62), and the output end of the storage battery (61) is electrically connected to the digital display screen (4) and the sensing and control component (52).

3. The photovoltaic-powered magnetically controlled digital display transmission according to claim 2, characterized in that: The transmission body (1) includes an upper cover (11) and a lower cover (12). The upper surface of the upper cover (11) includes a top planar area (111) and a sloped area (112). The solar panel (62) is installed on the top planar area (111), and the digital display screen (4) is installed on the sloped area (112).

4. The photovoltaic-powered magnetically controlled digital display transmission according to claim 1, characterized in that: The magnetic encoding structure (5) includes a magnetic element (51) and a sensing control component (52). The magnetic element (51) is disposed on the speed-changing turntable (2) and rotates synchronously with the speed-changing turntable (2). The sensing control component (52) is electrically connected to the digital display screen (4), and the sensing control component (52) and the magnetic element (51) are inductively coordinated.

5. A photovoltaic-powered magnetically controlled digital display transmission according to claim 4, characterized in that: The variable speed turntable (2) includes a coil base (21) and a magnet mounting part (22) integrally connected to the coil base (21). The magnet mounting part (22) has a mounting hole (221) at the rotation center position, and the magnetic element (51) is mounted on the magnet mounting part (22) through the mounting hole (221).

6. A photovoltaic-powered magnetically controlled digital display transmission according to any one of claims 4 or 5, characterized in that: The sensing and control assembly (52) includes a control board (521) and a magnetic sensor (522) integrated on the control board (521). The magnetic sensor (522) is inductively coupled with the magnetic element (51), and the magnetic sensor (522) is arranged in the axial direction of the speed change turntable (2) and is spaced apart from the magnetic element (51).

7. A photovoltaic-powered magnetically controlled digital display transmission according to claim 1, characterized in that: The transmission structure includes a geared disc (3) connected to the gearbox (2) with an anti-rotation connection. The gear shifting drive structure includes an upshift drive assembly (7), a downshift drive assembly (8), and a main return torsion spring (23). The main return torsion spring (23) is connected between the gearbox (2) and the transmission body (1), and the main return torsion spring (23) has a tendency to drive the geared disc (3) to rotate in the downshifting direction. The upshift drive assembly (7), the downshift drive assembly (8), and the main return torsion spring (23) cooperate to drive the gearbox (2) to rotate in the upshifting or downshifting direction.

8. A photovoltaic-powered magnetically controlled digital display transmission according to claim 7, characterized in that: The upshift drive assembly (7) includes an upshift pawl (71) and an upshift lever (72) that drives the upshift pawl (71) to rotate. An upshift lever return torsion spring (720) is provided between the upshift lever (72) and the transmission body (1). The transmission gear (3) is provided with upshift teeth (31) that engage with the upshift pawl (71). An upshift return torsion spring (710) is connected between the upshift pawl (71) and the transmission body (1). The upshift return torsion spring (710) has an elastic return force that drives the upshift pawl (71) to prevent the transmission gear (3) from rotating in the downshift direction.

9. A photovoltaic-powered magnetically controlled digital display transmission according to claim 7, characterized in that: The downshift drive assembly (8) includes a downshift pawl (81) and a downshift lever (82) that drives the downshift pawl (81) to rotate. A downshift lever return torsion spring (820) is provided between the downshift lever (82) and the transmission body (1). The gearbox (3) is provided with a downshift tooth (32) that is linked to the downshift pawl (81). A downshift return torsion spring (810) is connected between the downshift pawl (81) and the transmission body (1). The downshift return torsion spring (810) always has an elastic driving force that drives the downshift pawl (81) and the downshift tooth (32) to mesh with each other.

10. A photovoltaic-powered magnetically controlled digital display transmission according to claim 8, characterized in that: The gear shift turntable (2) includes a coil base (21) and a magnet mounting part (22) integrally connected to the coil base (21). A clearance gap (20) is formed between the magnet mounting part (22) and the coil base (21). The shift lever (72) and the shift pawl (71) are rotatably mounted on the transmission body (1) via the shift shaft (13). The gear shift turntable (2) is rotatably connected to the transmission body (1) via the main shaft (14). A limit rod (15) is connected between the main shaft (14) and the shift shaft (13). One end of the limit rod (15) is rotatably connected to the main shaft (14), and the other end of the limit rod (15) is rotatably connected to the shift shaft (13). The end of the limit rod (15) connected to the main shaft is located within the clearance gap (20).

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