Two-wheel motor electric reverse gear

Abstract

The utility model relates to two -wheeled motorcycle auxiliary equipment field more specifically, relate to a two -wheeled motorcycle electric reverse gear, include: installation base body is used for installing reverse gear in motorcycle, drive mechanism sets up on installation base body for providing positive and reverse rotation power, transmission shaft mechanism includes the hollow shaft that is connected with drive mechanism output end, and the solid shaft that is coaxially arranged in hollow shaft and can move along its axial direction, hollow shaft and solid shaft are coupled through a screw pair and make hollow shaft's positive and negative rotation drive solid shaft do axial reciprocating linear motion, the utility model discloses under the premise of not changing the original engine and transmission structure of motorcycle, make full use of the original car start button and installation position, through the installation reverse gear can realize the function of reversing, need not to change motorcycle engine and frame, simple structure, low in cost.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for two-wheeled motorcycles, and more specifically, to an electric reverse gear for two-wheeled motorcycles. Background Technology

[0002] Currently, the vast majority of two-wheeled motorcycles on the market do not have a reverse function. This lack of a reverse function causes significant inconvenience for users when maneuvering in confined spaces, making U-turns, or starting on a slope. Although some large scooters or three-wheeled motorcycles are equipped with reverse gear, their complex structure and high cost prevent their widespread adoption on the vast majority of ordinary two-wheeled motorcycles. Utility Model Content

[0003] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, this utility model provides an electric reverse gear for a two-wheeled motorcycle, comprising: Mounting base for mounting the reverse gear on a motorcycle; The drive mechanism, mounted on the mounting base, is used to provide forward and reverse rotational power; The transmission shaft mechanism includes a hollow shaft connected to the output end of the drive mechanism, and a solid shaft coaxially disposed inside the hollow shaft and movable along its axial direction; the hollow shaft and the solid shaft are coupled through a helical transmission pair, so that the forward and reverse rotation of the hollow shaft drives the solid shaft to perform axial reciprocating linear motion. The power coupling mechanism includes a first coupling portion disposed at the end of a solid shaft and a second coupling portion disposed on a motorcycle sprocket nut. When the solid shaft is extended, the first coupling portion engages with the second coupling portion to transmit torque. An anti-reverse mechanism is connected between the mounting base and the solid shaft so that the first joint at the end of the solid shaft can only drive the second joint to rotate in one direction.

[0005] Furthermore, the drive mechanism includes: a reverse gear motor and a worm gear reducer connected to the motor output shaft, with the output end of the worm gear reducer connected to a hollow shaft.

[0006] Furthermore, the helical transmission pair includes: a helical groove formed on the side wall of the hollow shaft and a pin that slides within the helical groove, the pin being vertically fixed on the solid shaft.

[0007] Furthermore, a mounting hole perpendicular to its axis is opened on the solid shaft, the middle part of the pin is fixed in the mounting hole, and the two ends of the pin are slidably fitted in two spiral grooves on the side wall of the hollow shaft.

[0008] Furthermore, the first joint includes a first end face transmission wheel disposed at the end of the solid shaft, and the second joint includes a second end face transmission wheel disposed at the end face of the small sprocket nut.

[0009] Furthermore, the anti-reverse mechanism includes: an anti-reverse snap ring, one end of which is engaged in the annular groove of the solid shaft, and the other end of which is fixed to the mounting base; when the hollow shaft rotates clockwise to drive the solid shaft to extend and engage the first end face transmission wheel and the second end face transmission wheel, the anti-reverse snap ring is compressed and stores axial elastic potential energy; when the hollow shaft rotates counterclockwise to drive the solid shaft to retract, the anti-reverse snap ring releases its axial elastic potential energy and assists in driving the solid shaft to axially reset.

[0010] Furthermore, two first convex edges with gradually increasing height in a clockwise direction are provided on the end face of the first end face transmission wheel; two second convex edges with gradually decreasing height in a clockwise direction are provided on the end face of the second end face transmission wheel; when the hollow shaft rotates clockwise to drive the solid shaft to extend and rotate, the planar segments of the two first convex edges on the end face of the first end face transmission wheel and the planar segments of the two second convex edges on the end face of the second end face transmission wheel interlock with each other to drive the second end face transmission wheel to rotate; when the hollow shaft rotates counterclockwise to drive the solid shaft to retract, the planar segments of the two first convex edges separate from the planar segments of the two second convex edges, and the sloped segments of the two first convex edges contact and slide with the sloped segments of the two second convex edges and generate radial offset separation.

[0011] Furthermore, the mounting base includes: a mounting bracket, which is fixed to the small sprocket cover of the motorcycle.

[0012] Furthermore, the two-wheeled motorcycle electric reverse gear also includes: a selector switch installed on the motorcycle, whose input terminal is electrically connected to the motorcycle's original start button, whose first output terminal is electrically connected to the original starter motor, and whose second output terminal is electrically connected to the signal input terminal of a time-delay relay board; the output terminal of the time-delay relay board is electrically connected to the drive mechanism. The time-delay relay board is configured to: control the drive mechanism to rotate forward when receiving a reverse gear start signal from the selector switch; and control the drive mechanism to rotate in reverse for a predetermined time and then stop when the reverse gear start signal disappears.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects: This invention, without altering the original engine and transmission structure of the motorcycle, makes full use of the original start button and installation position, and enables the reversing function by adding a reverse gear. It does not require modification to the motorcycle engine and frame, has a simple structure, low cost, and safely and reliably achieves the reversing function, and can be widely adopted on the vast number of ordinary two-wheeled motorcycles.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A schematic diagram of a two-wheeled motorcycle electric reverse gear provided in an embodiment of this utility model; Figure 2 A schematic diagram of the hollow shaft provided in an embodiment of this utility model; Figure 3 A schematic diagram of a solid shaft provided in an embodiment of this utility model; Figure 4 A schematic diagram of the first joint portion provided in an embodiment of this utility model; Figure 5 A schematic diagram of the second joint provided in an embodiment of this utility model; Figure 6 A schematic diagram of the circuit control principle provided for an embodiment of this utility model.

[0016] Icons: Drive shaft mechanism 100; Hollow shaft 101; Solid shaft 102; Spiral groove 103; Pin 104; Annular groove 105; First joint 200; First protruding edge 201; Second joint 300; Second protruding edge 301; Anti-reverse mechanism 400; Changeover switch 500; Motorcycle original start button 600; Original start motor 700; Time delay relay board 800; Drive mechanism 900. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0019] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0020] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0021] Example 1: As Figures 1-6 As shown, a two-wheeled motorcycle electric reverse gear includes: Mounting base for mounting the reverse gear on a motorcycle; The drive mechanism 900, mounted on the mounting base, is used to provide forward and reverse rotational power; The transmission shaft mechanism 100 includes a hollow shaft 101 connected to the output end of the drive mechanism 900, and a solid shaft 102 coaxially disposed within the hollow shaft 101 and movable along its axial direction; the hollow shaft 101 and the solid shaft 102 are coupled through a helical transmission pair, so that the forward and reverse rotation of the hollow shaft 101 drives the solid shaft 102 to perform axial reciprocating linear motion; The power coupling mechanism includes a first coupling portion 200 disposed at the end of the solid shaft 102 and a second coupling portion 300 disposed on the motorcycle sprocket nut. When the solid shaft 102 is extended, the first coupling portion 200 and the second coupling portion 300 engage to transmit torque. An anti-reverse mechanism 400 is connected between the mounting base and the solid shaft 102 so that the first joint 200 at the end of the solid shaft 102 can only drive the second joint 300 to rotate in one direction.

[0022] The working principle and technical effects of the above scheme are as follows: The core of this utility model's two-wheeled motorcycle electric reverse gear lies in providing power through a drive mechanism, converting rotational motion into linear motion using a transmission shaft mechanism, enabling power transmission through a power coupling mechanism, and ensuring the unidirectional nature of power transmission through a stop mechanism, ultimately achieving the reverse gear function of the motorcycle. The drive mechanism 900 is mounted on the mounting base and provides forward and reverse rotational power. By changing the rotation direction of the drive mechanism 900, different directions of power support can be provided for subsequent actions. The transmission shaft mechanism 100 consists of a hollow shaft 101 and a solid shaft 102. The hollow shaft 101 is connected to the output end of the drive mechanism 900, and when the drive mechanism 900 is working, it drives the hollow shaft 101 to rotate. The solid shaft 102 is coaxially arranged inside the hollow shaft 101 and can move along its axial direction. The hollow shaft 101 and the solid shaft 102 are coupled through a helical transmission pair. The structure of the helical transmission pair allows the forward and reverse rotation of the hollow shaft 101 to drive the solid shaft 102 to perform axial reciprocating linear motion. For example, when the hollow shaft 101 rotates forward, the solid shaft 102 extends axially; when the hollow shaft 101 rotates in the reverse direction, the solid shaft 102 retracts axially. The power engagement mechanism includes a first engagement portion 200 disposed at the end of the solid shaft 102 and a second engagement portion 300 disposed on the motorcycle sprocket nut. When the drive mechanism 900 drives the hollow shaft 101 to rotate, thereby causing the solid shaft 102 to extend, the first engagement portion 200 and the second engagement portion 300 engage. Once engaged, the rotational power generated by the drive mechanism 900 can be transmitted to the motorcycle sprocket nut through the hollow shaft 101, the solid shaft 102, and the first and second engagement portions, thereby realizing power transmission. The anti-reverse mechanism 400 is connected between the mounting base and the solid shaft 102. Its function is to ensure that the first joint 200 at the end of the solid shaft 102 can only drive the second joint 300 to rotate in one direction. During the power transmission process, it can only rotate in a specific direction to avoid reverse rotation, thus ensuring the stability and safety of power transmission.

[0023] Example 2: As Figures 1-6 As shown, the drive mechanism 900 includes: a reverse gear motor and a worm gear reducer connected to the motor output shaft. The output end of the worm gear reducer is connected to a hollow shaft 101. The helical transmission pair includes: a helical groove 103 formed on the side wall of the hollow shaft 101 and a pin 104 slidably fitted within the helical groove 103. The pin 104 is vertically fixed on a solid shaft 102. A mounting hole perpendicular to its axis is formed on the solid shaft 102. The middle part of the pin 104 is fixed in the mounting hole, and both ends of the pin 104 are slidably fitted within the two helical grooves 103 on the side wall of the hollow shaft 101.

[0024] The working principle and technical effects of the above scheme are as follows: The reverse gear motor in the drive mechanism 900 serves as a power source, generating rotational power. After the motor starts, its output shaft begins to rotate, providing initial power input to the entire reverse gear system. The motor output shaft is connected to a worm gear reducer, which reduces speed and changes the transmission direction. The high-speed rotational power output by the motor is reduced by the worm gear reducer, decreasing the output speed and increasing the torque to meet the working requirements of the subsequent transmission shaft mechanism. The output end of the worm gear reducer is connected to a hollow shaft 101, transmitting the reduced and adjusted rotational power to the hollow shaft 101, causing it to rotate. The helical transmission pair consists of a helical groove 103 formed on the side wall of the hollow shaft 101 and a pin 104 slidingly fitted within the helical groove 103. The pin 104 is vertically fixed to a solid shaft 102, specifically by fixing the middle of the pin 104 in a mounting hole perpendicular to its axis on the solid shaft 102, with both ends of the pin 104 slidingly fitted to the hollow shaft. Within the two helical grooves 103 on the side wall of 101; when the hollow shaft 101 rotates under the drive of the drive mechanism 900, due to the sliding engagement between the pin 104 and the helical grooves 103 on the hollow shaft 101, the helical shape of the helical grooves 103 will generate a force along the helical direction on the pin 104. Since the pin 104 is fixed on the solid shaft 102, this force will cause the solid shaft 102 to reciprocate linearly along its axial direction. For example, when the hollow shaft 101 rotates in the forward direction, the pin 104 slides in the helical grooves 103, pushing the solid shaft 102 to extend; when the hollow shaft 101 rotates in the reverse direction, the pin 104 slides in the reverse direction, causing the solid shaft 102 to retract.

[0025] The combination of the reverse gear motor and the worm gear reducer converts the high-speed rotational power of the motor into low-speed, high-torque power suitable for the operation of the transmission shaft mechanism. The worm gear reducer also has a self-locking function, which to some extent prevents the hollow shaft 101 from rotating in the opposite direction due to external forces, improving the safety and stability of the reverse gear. The helical drive pair, through the cooperation of the helical groove 103 and the pin 104, cleverly converts the rotational motion of the hollow shaft 101 into the axial linear motion of the solid shaft 102. This motion conversion method is simple and compact, enabling complex motion conversion within a limited space, thus facilitating the design and installation of the reverse gear. Due to the presence of the helical drive pair, the reverse gear can precisely control the extension and retraction of the solid shaft 102 by controlling the forward and reverse rotation of the reverse gear motor, thereby achieving accurate engagement and disengagement of the first engagement part 200 and the second engagement part 300 in the power engagement mechanism, ensuring the normal operation of the reverse gear function. Both ends of shaft 104 are simultaneously slidably fitted within two helical grooves 103 on the sidewall of hollow shaft 101, making solid shaft 102 more stable during movement and reducing the possibility of wobbling and deviation. Meanwhile, the vertical fixing of pin 104 to solid shaft 102 further enhances structural stability, ensuring the long-term stable operation of the helical transmission pair.

[0026] Example 3: As Figures 1-6 As shown, the first connecting part 200 includes a first end face transmission wheel disposed at the end of the solid shaft 102, and the second connecting part 300 includes a second end face transmission wheel disposed at the end face of the small sprocket nut. The anti-reverse mechanism 400 includes an anti-reverse snap ring, one end of which is engaged in the annular groove 105 of the solid shaft 102, and the other end of which is fixed to the mounting base; when the hollow shaft 101 rotates clockwise to drive the solid shaft 102 to extend and engage the first end face transmission wheel and the second end face transmission wheel, the anti-reverse snap ring is compressed and stores axial elastic potential energy; when the hollow shaft 101 rotates counterclockwise to drive the solid shaft 102 to retract, the anti-reverse snap ring releases its axial elastic potential energy, assisting in driving the solid shaft 102 to axially reset. Two first convex edges 201 with gradually increasing height in a clockwise direction are provided on the end face of the first end face transmission wheel; two second convex edges 301 with gradually decreasing height in a clockwise direction are provided on the end face of the second end face transmission wheel; when the hollow shaft 101 rotates clockwise to drive the solid shaft 102 to extend and rotate, the planar segments of the two first convex edges 201 on the end face of the first end face transmission wheel and the planar segments of the two second convex edges 301 on the end face of the second end face transmission wheel interlock with each other to drive the second end face transmission wheel to rotate; when the hollow shaft 101 rotates counterclockwise to drive the solid shaft 102 to retract, the planar segments of the two first convex edges 201 and the planar segments of the two second convex edges 301 separate, and the sloping segments of the two first convex edges 201 and the sloping segments of the two second convex edges 301 contact and slide and produce radial offset separation.

[0027] The working principle and technical effects of the above scheme are as follows: When the hollow shaft 101 rotates clockwise, it drives the solid shaft 102 to extend through the spiral groove 103 and the pin 104. At this time, the first connecting part 200 (first end face transmission wheel) located at the end of the solid shaft 102 and the second connecting part 300 (second end face transmission wheel) located at the end face of the small sprocket nut approach each other and engage; the end face of the first end face transmission wheel is provided with two first convex edges 201 whose height gradually increases in the clockwise direction, and the end face of the second end face transmission wheel is provided with two second convex edges 301 whose height gradually decreases in the clockwise direction; when the hollow shaft 101 drives the solid shaft 102 to extend and rotate, the planar sections of the two first convex edges 201 on the end face of the first end face transmission wheel and the planar sections of the two second convex edges 301 on the end face of the second end face transmission wheel interlock with each other, so that the power of the drive mechanism 900 can be transmitted to the second end face transmission wheel through the hollow shaft 101, the solid shaft 102, and the first end face transmission wheel, thereby driving the small sprocket nut to rotate, realizing power transmission and the reverse gear function of the motorcycle. The anti-reverse mechanism 400 has one end of an anti-reverse snap ring that is engaged in the annular groove 105 of the solid shaft 102, and the other end that is fixed to the mounting base. When the hollow shaft 101 rotates clockwise, driving the solid shaft 102 to extend and engaging the first end face transmission wheel and the second end face transmission wheel, the anti-reverse snap ring is compressed, converting mechanical energy into axial elastic potential energy and storing it. When the hollow shaft 101 rotates counterclockwise, driving the solid shaft 102 to retract, the anti-reverse snap ring releases its axial elastic potential energy, providing auxiliary power for the axial reset of the solid shaft 102 and helping the solid shaft 102 return to its initial position more smoothly. When the hollow shaft 101 rotates counterclockwise, causing the solid shaft 102 to retract, the planar sections of the two first convex edges 201 separate from the planar sections of the two second convex edges 301. Simultaneously, the sloping sections of the two first convex edges 201 and the sloping sections of the two second convex edges 301 contact and slide. Due to the presence of the slope, radial offset occurs during the sliding process, allowing the first end-face drive wheel and the second end-face drive wheel to smoothly separate, disengaging the power transmission state. The interlocking design of the planar sections of the first convex edges 201 and the second convex edges 301 effectively transmits torque. The larger contact area of ​​the planar sections makes power transmission more stable and efficient, reducing losses during power transmission and ensuring that the motorcycle can reliably achieve reverse gear functionality. The rotation of the hollow shaft 101 drives the solid shaft 102 to extend, engaging the first end-face drive wheel and the second end-face drive wheel. The interlocking action of the convex edges ensures a tight engagement of the two drive wheels during power transmission, preventing slippage and improving the reliability of power transmission. The sloping section design of the first convex edge 201 and the second convex edge 301 allows the two transmission wheels to be easily separated by sliding and radial offset of the slope when separation is required, avoiding adhesion between the transmission wheels, ensuring that the reverse gear can disengage the power transmission state in a timely manner, and improving the flexibility and safety of operation.The anti-reverse snap ring stores elastic potential energy when the solid shaft 102 extends and releases elastic potential energy to assist in resetting when it retracts. This not only reduces the load on the drive mechanism 900 when the solid shaft 102 resets, but also speeds up the reset speed of the solid shaft 102, making the operation of the reverse gear faster and more sensitive, and improving the response performance of the entire system.

[0028] Example 4: Figures 1-6 As shown, the mounting base includes a mounting bracket, which is fixed to the small sprocket cover of the motorcycle. The two-wheeled motorcycle electric reverse gear also includes a changeover switch 500 mounted on the motorcycle, whose input terminal is electrically connected to the motorcycle's original start button 600, whose first output terminal is electrically connected to the original starter motor 700, and whose second output terminal is electrically connected to the signal input terminal of a time-delay relay board 800; the output terminal of the time-delay relay board 800 is electrically connected to the drive mechanism 900. The time-delay relay board 800 is configured to: when receiving a reverse gear start signal from the changeover switch 500, control the drive mechanism 900 to rotate forward; when the reverse gear start signal disappears, control the drive mechanism 900 to rotate in reverse for a predetermined time and then stop.

[0029] The working principle and technical effects of the above scheme are as follows: The mounting bracket serves as the mounting base, fixed to the small sprocket cover of the motorcycle. This allows the electric reverse gear for two-wheeled motorcycles to be easily installed on the motorcycle, utilizing the existing structural components of the motorcycle for fixation, without requiring large-scale modifications to the motorcycle. Meanwhile, the small sprocket cover provides a stable mounting position, ensuring the stability of the reverse gear during motorcycle operation and reducing loosening or displacement caused by vibration and other factors, thus ensuring the normal operation of the reverse gear. The input terminal of the changeover switch 500 is electrically connected to the motorcycle's original start button 600, the first output terminal is electrically connected to the original starter motor 700, and the second output terminal is electrically connected to the signal input terminal of the time delay relay board 800. This connection method realizes integrated control of the motorcycle's original starting system and reverse gear system. Users can use the original start button 600 in conjunction with the changeover switch 500 to select normal motorcycle start (via the original starter motor 700) or to start the reverse gear function (via the time delay relay board 800 controlling the drive mechanism 900), making operation more convenient and eliminating the need for additional complex operation buttons, thus improving user flexibility. The time delay relay board 800 is configured to control the drive mechanism 900 to rotate forward when it receives the reverse gear start signal from the changeover switch 500, so that the reverse gear function can be automatically started. When the user issues a reverse gear command, the drive mechanism 900 starts working, realizing power engagement and completing the reverse gear operation. When the reverse gear start signal disappears, the time delay relay board 800 controls the drive mechanism 900 to reverse for a predetermined time and then stop, realizing the automatic reset of the reverse gear. This ensures that after the reverse gear operation is completed, the drive mechanism 900 can automatically return to the initial state, preparing for the next normal driving or reverse gear operation. This reduces the steps of manual reset by the user and improves the efficiency and reliability of the reverse gear.

[0030] In this invention, the original motorcycle start button 600 can be replaced with a horn button. Specifically, the input terminal of the switch 500 can be electrically connected to either the original motorcycle start button 600 or the horn button. When the original motorcycle start button 600 is replaced with a horn button, the first output terminal of the switch 500 is also changed to connect to the horn, replacing the original starter motor 700. Since the original starter motor of some motorcycles is controlled by an ECU (Electronic Control Unit), the control method of this invention makes direct modification of the starter motor quite complex, requiring a deep understanding of the ECU's control logic and circuit design, and may even involve cracking the ECU program. This is extremely difficult for ordinary modifiers. Replacing the original start button with a horn button and adjusting the switch connection accordingly bypasses the complex modification of the ECU-controlled starter motor, lowering the technical threshold and difficulty of modification, allowing ordinary motorcycle enthusiasts to perform a certain degree of modification.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A two-wheeled motorcycle electric reverse gear, characterized in that, include: Mounting base for mounting the reverse gear to a motorcycle; The drive mechanism, mounted on the mounting base, is used to provide forward and reverse rotational power; The transmission shaft mechanism includes a hollow shaft connected to the output end of the drive mechanism, and a solid shaft coaxially disposed inside the hollow shaft and movable along its axial direction; the hollow shaft and the solid shaft are coupled through a helical transmission pair, so that the forward and reverse rotation of the hollow shaft drives the solid shaft to perform axial reciprocating linear motion. The power coupling mechanism includes a first coupling portion disposed at the end of a solid shaft and a second coupling portion disposed on a motorcycle sprocket nut. When the solid shaft is extended, the first coupling portion engages with the second coupling portion to transmit torque. An anti-reverse mechanism is connected between the mounting base and the solid shaft so that the first joint at the end of the solid shaft can only drive the second joint to rotate in one direction.

2. The two-wheeled motorcycle electric reverse gear according to claim 1, characterized in that, The drive mechanism includes: a reverse gear motor and a worm gear reducer connected to the motor output shaft, with the output end of the worm gear reducer connected to a hollow shaft.

3. The two-wheeled motorcycle electric reverse gear of claim 1, wherein, The helical drive pair includes: a helical groove formed on the side wall of the hollow shaft and a pin that slides within the helical groove, with the pin vertically fixed on the solid shaft.

4. The two-wheeled motorcycle electric reverse gear according to claim 3, characterized in that, A mounting hole perpendicular to its axis is opened on the solid shaft, the middle part of the pin is fixed in the mounting hole, and the two ends of the pin are slidably fitted in two spiral grooves on the side wall of the hollow shaft.

5. The two-wheeled motorcycle electric reverse gear of claim 1, wherein, The first joint includes a first end face transmission wheel disposed at the end of the solid shaft, and the second joint includes a second end face transmission wheel disposed at the end face of the small sprocket nut.

6. The two-wheeled motorcycle electric reverse gear of claim 5, wherein, The anti-reverse mechanism includes an anti-reverse snap ring, one end of which is engaged in the annular groove of the solid shaft, and the other end of which is fixed to the mounting base. When the hollow shaft rotates clockwise, driving the solid shaft to extend and engaging the first end face transmission wheel and the second end face transmission wheel, the anti-reverse snap ring is compressed and stores axial elastic potential energy. When the hollow shaft rotates counterclockwise, driving the solid shaft to retract, the anti-reverse snap ring releases its axial elastic potential energy, assisting in driving the solid shaft to axially reset.

7. The electric reverse gear for a two-wheeled motorcycle according to claim 6, characterized in that, The first end face of the transmission wheel has two first convex edges whose height gradually increases in a clockwise direction; the second end face of the transmission wheel has two second convex edges whose height gradually decreases in a clockwise direction. When the hollow shaft rotates clockwise, causing the solid shaft to extend and rotate, the planar segments of the two first convex edges on the end face of the first end face of the transmission wheel and the planar segments of the two second convex edges on the end face of the second end face of the transmission wheel interlock with each other, thereby driving the second end face of the transmission wheel to rotate. When the hollow shaft rotates counterclockwise, causing the solid shaft to retract, the planar segments of the two first convex edges separate from the planar segments of the two second convex edges, and the sloping segments of the two first convex edges contact and slide with the sloping segments of the two second convex edges, resulting in radial offset separation.

8. The two-wheeled motorcycle electric reverse gear of claim 1, wherein, The mounting base includes: a mounting bracket, which is fixed to the small sprocket cover of the motorcycle.

9. The two-wheeled motorcycle electric reverse gear of claim 1, wherein, Also includes: The changeover switch installed on the motorcycle has its input terminal electrically connected to the original start button of the motorcycle, its first output terminal electrically connected to the original starter motor of the motorcycle, and its second output terminal electrically connected to the signal input terminal of a time delay relay board; the output terminal of the time delay relay board is electrically connected to the drive mechanism.

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