A motorcycle rear wheel lateral movement device

Abstract

The invention discloses a motorcycle rear wheel lateral movement device, comprising a lateral drive motor, a lead screw, a threaded bearing, a transmission half shaft and an auxiliary half shaft, wherein the outer end of the transmission half shaft is connected to an engine, the transmission half shaft and the auxiliary half shaft are respectively rotatably connected to the two ends of a horizontal U-shaped frame arranged at the lower end of the rear side of the frame, the lateral drive motor is fixedly connected to the frame through a lateral motor frame, the auxiliary half shaft is a hollow structure, the motor shaft of the lateral drive motor is fixedly connected to the lead screw, the lead screw passes through the auxiliary half shaft and matches with the inner ring threaded nut of the threaded bearing, the outer ring of the threaded bearing is fixedly connected to the inner hole in the middle of the rear wheel, the transmission half shaft is a stepped shaft, the inner end big head is provided with a plurality of guide shafts, the plurality of guide shafts movably pass through the rear wheel and are connected to the inner end big head of the auxiliary half shaft, the lateral motor frame is provided with a plurality of limit guide shafts, the plurality of limit guide shafts are evenly arranged around the circumference of the lateral drive motor, and are movably inserted into the inner ring threaded nut of the threaded bearing. The invention can realize the lateral movement of the rear wheel.

Description

Technical Field

[0001] The invention relates to a motorcycle rear wheel lateral movement device, belonging to the technical field of motorcycles. Background Art

[0002] A motorcycle is a two-wheeled or three-wheeled vehicle driven by a gasoline engine and steered by a handlebar. It is light, flexible, and fast, and is widely used in patrolling, passenger and cargo transportation, etc. Existing motorcycles have the problem of side slipping during turning, especially at high speeds, and have poor safety, as the rear wheel cannot adapt to changes in the center of gravity of the vehicle. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a motorcycle rear wheel lateral movement device to solve the problems existing in the prior art.

[0004] The technical solution adopted by the present invention is: a motorcycle rear wheel lateral movement device, including a lateral drive motor, a screw, a nut bearing, a transmission half shaft and an auxiliary half shaft, the outer end of the transmission half shaft is connected to the engine, the transmission half shaft and the auxiliary half shaft are respectively rotatably connected to the two ends of the horizontal U-shaped frame arranged at the lower end of the rear side of the frame, the lateral drive motor is fixedly connected to the frame through the lateral motor frame, the auxiliary half shaft is a hollow structure, the motor shaft of the lateral drive motor is fixedly connected to the screw, the screw passes through the auxiliary half shaft and cooperates with the inner ring nut of the nut bearing, the outer ring of the nut bearing is fixedly connected to the inner hole in the middle of the rear wheel, the transmission half shaft is a stepped shaft, and the inner end big head is provided with multiple guide shafts, the multiple guide shafts are movably passed through the rear wheel and connected to the inner end big head of the auxiliary half shaft, the lateral motor frame is provided with multiple limit guide shafts, the multiple limit guide shafts are evenly arranged around the circumference of the lateral drive motor, and are movably inserted into the inner ring nut of the nut bearing.

[0005] Preferably, four of the guide shafts and the limit guide shafts are respectively used.

[0006] Preferably, one end of the lead screw is fixedly connected to the motor shaft of the transverse drive motor through a coupling, and the other end is rotatably connected to a bearing, and the bearing is installed in the inner hole of the inner end of the transmission half shaft.

[0007] Beneficial effects of the present invention: Compared with the prior art, the effects of the present invention are as follows:

[0008] (1) The present invention adopts a rear wheel lateral movement mechanism composed of a lateral drive motor, a lead screw, a nut bearing, a transmission half shaft and an auxiliary half shaft. The lateral drive motor is used in conjunction with the lead screw and the nut bearing to realize the left and right movement of the rear wheel. The rear wheel adopts multiple guide shafts for lateral movement guidance and rotational power transmission. The movement is stable and reliable, and the rotational power is reliable. Multiple limit guide shafts are used to limit the rotation of the nut of the inner ring of the nut bearing to avoid following the rotation of the wheel. The rear wheel moves laterally, so that the center of gravity of the whole vehicle can change within a certain range, reducing the possibility of rollover;

[0009] (4) Four guide shafts and a limit guide shaft are used to ensure balanced force;

[0010] (5) Install the bearing inside the transmission half shaft to support the screw, which plays an auxiliary supporting role, avoids damage to the screw, and increases the service life of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of a motorcycle;

[0012] Figure 2 It is a schematic diagram of the front structure of a motorcycle;

[0013] Figure 3 It is a schematic diagram of the structure of a motorcycle from the right side;

[0014] Figure 4 It is a schematic diagram of the structure of a motorcycle from the left;

[0015] Figure 5 It is a schematic diagram of the structure of a motorcycle when viewed from above;

[0016] Figure 6 It is a schematic diagram of the structure of a motorcycle from a top view;

[0017] Figure 7 for Figure 3 AA cross-sectional structure diagram;

[0018] Figure 8 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0019] Fig. 9 It is a schematic diagram of the exploded structure of the rear wheel lateral movement mechanism;

[0020] Fig.10 This is a schematic diagram of the weight sensor connection at the seat cushion;

[0021] Fig.11 This is a schematic diagram of the auxiliary support frame installation structure;

[0022] Fig.12 It is a schematic diagram of the electric locking device structure. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Example 1: Figure 1-121 , a motorcycle rear wheel lateral movement device includes a lateral drive motor 8, a lead screw 9, a screw bearing 10, a transmission half shaft 11 and an auxiliary half shaft 12. The outer end of the transmission half shaft 11 is connected to the engine 6. The transmission half shaft 11 and the auxiliary half shaft 12 are respectively rotatably connected to the two ends of a horizontal U-shaped frame arranged at the lower end of the rear side of the frame 2. The lateral drive motor 8 is fixedly connected to the frame 2 through a lateral motor frame 13. The auxiliary half shaft 12 is a hollow structure. The motor shaft of the lateral drive motor 8 is fixedly connected to the lead screw 9. The lead screw 9 passes through the horizontal U-shaped frame 13. After passing through the auxiliary half-shaft 12, it cooperates with the inner ring nut of the nut bearing 10. The outer ring of the nut bearing 10 is fixedly connected to the inner hole in the middle of the rear wheel 4. The transmission half-shaft 11 is a stepped shaft. A plurality of guide shafts 14 are arranged at the inner end big head. The plurality of guide shafts 14 are movably passed through the rear wheel 4 and then connected to the inner end big head of the auxiliary half-shaft 12. A plurality of limiting guide shafts 15 are arranged on the transverse motor frame 13. The plurality of limiting guide shafts 15 are evenly arranged around the transverse drive motor 8 in the circumferential direction and are movably inserted into the inner ring nut of the nut bearing 10.

[0025] Preferably, four guide shafts 14 and four limit guide shafts 15 are respectively used.

[0026] Preferably, one end of the lead screw 9 is fixedly connected to the motor shaft of the transverse drive motor 8 through a coupling, and the other end is rotatably connected to a bearing, and the bearing is installed in the inner hole of the inner end of the transmission half shaft 11.

[0027] Example 2: Figure 1-12 The figure shows a motorcycle, comprising a handlebar 1, a frame 2, a front wheel 3 and a rear wheel 4, wherein the front wheel 3 is rotatably connected to the lower end of the handlebar 1, the front end of the frame 2 is rotatably connected to the middle and upper part of the handlebar 1, the rear wheel 4 is rotatably connected to the lower rear end of the frame 2, a seat 5 is installed on the frame 2, the rear wheel 4 is connected to an engine 6 through a sprocket chain, the engine 6 is installed on the frame 2, the rear wheel 4 is installed with a rear wheel lateral moving mechanism, and the frame 2 is installed with a lateral tilt angle sensor 7.

[0028] Preferably, the rear wheel lateral movement mechanism (motorcycle rear wheel lateral movement device) includes a lateral drive motor 8, a lead screw 9, a threaded bearing 10, a transmission half shaft 11 and an auxiliary half shaft 12. The outer end of the transmission half shaft 11 is connected to the engine 6. The transmission half shaft 11 and the auxiliary half shaft 12 are respectively rotatably connected to the two ends of the horizontal U-shaped frame arranged at the lower end of the rear side of the frame 2. The lateral drive motor 8 is fixedly connected to the frame 2 through a lateral motor frame 13. The auxiliary half shaft 12 is a hollow structure. The motor shaft of the lateral drive motor 8 is fixed to the lead screw 9. The lead screw 9 passes through the auxiliary half-shaft 12 and cooperates with the inner ring nut of the nut bearing 10. The outer ring of the nut bearing 10 is fixedly connected to the inner hole in the middle of the rear wheel 4. The transmission half-shaft 11 is a stepped shaft. A plurality of guide shafts 14 are arranged at the inner end big head. The plurality of guide shafts 14 are movably passed through the rear wheel 4 and connected to the inner end big head of the auxiliary half-shaft 12. A plurality of limiting guide shafts 15 are arranged on the transverse motor frame 13. The plurality of limiting guide shafts 15 are evenly arranged around the transverse drive motor 8 in the circumferential direction and are movably inserted into the inner ring nut of the nut bearing 10.

[0029] Preferably, four guide shafts 14 and four limit guide shafts 15 are respectively used.

[0030] Preferably, one end of the lead screw 9 is fixedly connected to the motor shaft of the transverse drive motor 8 through a coupling, and the other end is rotatably connected to a bearing, and the bearing is installed in the inner hole of the inner end of the transmission half shaft 11.

[0031] Preferably, two symmetrical pitch rotation support mechanisms or two auxiliary support frames are installed on both sides of the lower end of the frame 2 , the two pitch rotation support mechanisms are located on both sides of the rear wheel 4 , and the two auxiliary support frames are located on both sides of the center of the frame 2 .

[0032] Preferably, each of the above-mentioned pitch rotation support mechanisms includes a pitch motor 16, a lateral rotation motor 17, a support rod 18 and a universal wheel 19, the pitch motor 16 is horizontally fixedly connected to the bottom of the frame 4, the motor shaft of the pitch motor 16 is fixedly connected to the swing motor frame 20, the lateral rotation motor 17 is vertically fixedly connected to the swing motor frame 20, the motor shaft of the lateral rotation motor 17 is fixedly connected to one end of the support rod 18, the universal wheel 19 is installed at the other end of the support rod 18, and an electric locker 38 is installed on the motor shaft of the pitch motor 16, such as Fig.12As shown, the electric locker 38 includes a mounting plate 39, a brake pad 40 and an electromagnet 41. The brake pad 40 is made of two pieces, both of which are semicircular arc structures. One end is symmetrically hinged on the mounting plate 39, and the other end face is symmetrically arranged with an electromagnet 41 and two symmetrical return springs 42 are arranged on the back. The other end of the return spring 42 is fixedly connected to the spring seat on the mounting plate 39. The mounting plate 39 is fixedly connected to the bottom of the frame 4 by bolts or welding. A through hole is provided on the mounting plate 39 for passing the motor shaft of the pitch motor 16. The through hole is located in the center of the two brake pads 40. After the two brake pads 40 are symmetrically rotated, they can hold the motor shaft tightly to achieve the locking of the motor shaft. The locker cooperates with the motor to lock, which further improves the locking reliability and stability.

[0033] Preferably, each of the above-mentioned auxiliary support frames includes a U-shaped support frame 33 and an auxiliary universal wheel 34, both ends of the U-shaped support frame 33 are hinged on the auxiliary articulated frame 35 arranged on the lower side of the frame 2, and the auxiliary universal wheel 34 is installed on the lower side of the middle part of the U-shaped support frame 33. A driving mechanism is installed on the U-shaped support frame 33, and the driving mechanism includes a telescopic cylinder 36 or a motor 37. The cylinder rod end of the telescopic cylinder 36 is hinged to the middle of one side arm of the U-shaped support frame 33, and the cylinder seat of the telescopic cylinder 36 is hinged to the frame 2. The motor 37 is fixedly connected to the auxiliary articulated frame 35 and the output shaft is fixedly connected to the articulated shaft at one end of the U-shaped support frame 33. The motor adopts hydraulic, pneumatic or electric, and the telescopic cylinder adopts an electric cylinder, a cylinder or a hydraulic cylinder, such as Fig.11 shown.

[0034] Preferably, the faucet 1 is provided with two radars 21 and a camera 22 facing forward, a worm gear drive mechanism is provided at the connection between the faucet 1 and the frame 2, the worm gear drive mechanism is connected to the faucet rotating motor 24, the faucet rotating motor 24 is fixedly connected to the frame 2, an ABS brake mechanism 23 is provided next to the rear wheel 4, a weight measuring device is provided on the seat cushion 5, the weight measuring device includes a weight sensor 29, a rear end of the seat frame of the seat cushion 5 is hinged to the frame 2 through a hinge 31, and the other end is pressed on the upper end surface of the weight sensor 29, the weight sensor 29 is placed in a protective shell 30, and the lower end surface of the protective shell 30 is fixedly connected to the frame 2, the seat frame can be embedded in the groove on the frame 2, a rotating baffle 32 is provided on the frame 2, the rotating baffle 32 is located next to the groove after the seat frame is embedded in the groove, and can limit the seat frame from escaping the groove after rotation, and the weight measured by the weight sensor is multiplied by two to obtain the sum of the human body weight and the seat cushion weight.

[0035] Preferably, a three-way radar device 25 is installed on the upper side of the rear end of the frame 4, and the three-way radar device 25 is installed with three radars on the left, right and rear sides of the frame.

[0036] Preferably, the engine 6 is connected to a PLC controller 43, which is connected to a lateral drive motor 8, a pitch motor 16, a lateral rotation motor 17, a radar 21, a camera 22, a faucet rotation motor 24, an ABS brake mechanism 23, a weight sensor, a three-way radar device 25, a display screen on the faucet 1, a direction angle sensor 26, a wheel speed sensor 27, a throttle rotator 28, a start key and an electric lock installed on the motor shaft of the pitch motor, the wheel speed sensor 27 is installed on the front wheel or the rear wheel, and the direction angle sensor 26 is installed on the end of the worm shaft of the worm gear drive mechanism.

[0037] Working principle: turn on the start key 28 connected to the steering rod of the handlebar 1 to start the engine 6 installed on the frame 2, and start the PLC controller 43 at the same time. Before moving, the two pitch rotation support mechanisms hang down to make the two universal wheels contact the ground to support and stabilize the vehicle body. When the vehicle moves, the wheel speed sensor immediately transmits the signal to the PLC controller, and the PLC controller immediately drives the pitch motor and the lateral rotation motor installed on the frame 2 to drive the support rod to rotate, and drives the universal wheels to leave the ground upward, turn to a predetermined angle and stop. During the operation of the vehicle, the distance detection radar and the camera monitor the front of the motorcycle at any time. The monitoring distance can be adjusted up or down according to the situation. If there is an obstacle in front and the driver does not slow down accordingly If you step on the brakes gently, the PLC controller will respond immediately. According to the timely detection of the distance detection radar and the camera, the weight sensed by the weight sensor, the weight of the frame, and the size of the inertia force, the ABS brake mechanism will give the corresponding braking force to slow down the motorcycle to a safe speed. When approaching an obstacle, if the driver does not make a corresponding action or moves slowly, the PLC controller will judge whether it can pass through the camera based on the signals of the two radars and the camera. If it cannot pass, the brake system will be immediately started to stop, and the two pitch rotation support mechanisms will be lowered to support and stabilize the vehicle body; if it can pass, the PLC controller will start the faucet rotation motor to drive the turbine vortex drive mechanism to push the faucet 1 to turn and bypass the obstacle at a low speed. If you encounter an intersection or a traffic light intersection, the PLC controller will slow down the throttle rotator in advance based on the signals of the camera and the two radars, and stop if the red light is on. When driving at high speed, the controller determines that sharp turns are not allowed based on the signals of the direction angle sensor and the wheel speed sensor, and only allows the corresponding safe rotation angle.If the vehicle body tilts due to slippery road conditions or other reasons while driving, the lateral tilt angle sensor immediately transmits a signal to the controller. If it tilts to the left, the controller rotates the left lateral rotation motor, and the lateral rotation motor immediately pops out the support rod 70 degrees. At the same time, the controller controls the left pitch motor to drive the support rod to rotate downward 30 degrees. This process restores the vehicle body from tilt to a basic level. At this time, the lateral rotation motor and pitch motor on the left reverse to retract the support rod on the left. If it tilts to the right, the lateral rotation motor, pitch motor and support rod on the right are retracted and released according to the rules of the left tilt. The output shaft of the pitch motor is equipped with a lock, and the electric lock is locked at this time. When the motorcycle is driving on a mountain road, the controller can only drive at a low speed according to the signals of the two radars and the camera. The road surface is narrow and uneven, because the body is tilted and the two pitch rotation support mechanisms cannot be activated at this time. At this time, the rear wheel center of gravity left and right sliding device (wheel lateral movement mechanism) is activated. A sprocket is installed on the outer end of the transmission half shaft, and the sprocket is connected to the sprocket on the engine output shaft through a chain. When the body tilts slightly to the right, the controller drives the lateral drive motor to rotate the lead screw according to the signal of the lateral tilt angle sensor, and slides quickly to the right through the nut bearing, so that the body center of gravity moves to the left. Similarly, if the wheel tilts to the left, the nut bearing slides quickly to the left, so that the center of gravity moves to the right. This is repeated to stabilize the motorcycle. The two radars and the camera cooperate with the three-way radar device to monitor the left and right directions and the front and rear directions when the motorcycle is driving. When a car attacks the motorcycle due to an unexpected reason, it automatically accelerates or decelerates or brakes to have a certain avoidance ability.

[0038] Motorcycles have the following advantages:

[0039] (1) Install a rear wheel lateral movement mechanism on the rear wheel and a lateral tilt angle sensor on the frame. When driving on a mountain road, the road surface is narrow and uneven, so the vehicle can only travel at a low speed. When the lateral tilt angle sensor detects that the vehicle body is slightly tilted to one side, the rear wheel lateral movement mechanism drives the rear wheel to move to the tilted side, thereby moving the center of gravity in the opposite direction, achieving a better balance and greatly improving safety.

[0040] (2) The rear wheel lateral movement mechanism is composed of a lateral drive motor, a lead screw, a nut bearing, a transmission half shaft and an auxiliary half shaft. The lateral drive motor is used in conjunction with the lead screw and the nut bearing to realize the left and right movement of the rear wheel. The rear wheel uses multiple guide shafts for lateral movement guidance and rotational power transmission. The movement is smooth and reliable, and the rotational power is reliable. Multiple limit guide shafts are used to limit the rotation of the nut of the inner ring of the nut bearing to avoid following the rotation of the wheel;

[0041] (4) Four guide shafts and a limit guide shaft are used to ensure balanced force;

[0042] (5) Install the bearing inside the transmission half shaft to support the screw, which plays an auxiliary supporting role, avoids damage to the screw, and increases the service life of the screw;

[0043] (6) Install a pitch rotation support mechanism and cooperate with a lateral tilt angle sensor. When the tilt angle sensor detects that one side is tilted, the pitch rotation support mechanism provides auxiliary support on the corresponding side to straighten the motorcycle;

[0044] (7) A pitch rotation support mechanism consisting of a pitch motor, a lateral rotation motor, a support rod and a universal wheel is used. When auxiliary support is needed, the corresponding pitch motor and lateral rotation motor are activated to achieve support for the motorcycle;

[0045] (8) Two radars, a camera, a worm gear drive mechanism, an ABS brake mechanism and a weight measuring device are used. During the operation of the motorcycle, the two distance measuring radars and cameras monitor the front of the motorcycle at any time. If there is an obstacle in front and the driver does not slow down and brake accordingly, the controller will respond immediately. According to the timely detection of the two distance measuring radars and cameras and the weight sensed by the weight sensor plus the weight of the frame and the size of the inertia force, the ABS brake mechanism is controlled to give the corresponding braking force to slow down the motorcycle to a safe speed. When approaching an obstacle, if the driver does not make a corresponding action or is slow, the controller will immediately start the brake mechanism to stop according to the signals of the radar and camera, and lower the pitch rotation support mechanism to stabilize the vehicle body. If it can pass, the controller controls the handlebar rotation motor to drive the worm gear mechanism to push the handlebar to turn and bypass the obstacle at a low speed. If an intersection or a traffic light is encountered, the controller will slow down the throttle turner in advance according to the signals of the camera and radar, and stop if the red light is on. When driving at high speed, the controller does not allow sharp turns according to the signals of the direction angle sensor and the wheel speed sensor, and only allows the corresponding safe rotation angle.

[0046] The solution of the present invention is used on a motorcycle to improve the safety factor. The rise and fall of the intelligent pitch rotation support mechanism and the change of the vehicle's center of gravity make the vehicle stable and adaptable to all road conditions, greatly improving the safety factor. The power source of the rise and fall of the pitch rotation support mechanism and the change of the vehicle's center of gravity is a stepper motor with a screw nut pair drive. The stepper motor with a screw nut pair drive is only one of the present invention. The stepper motor with a screw nut pair can be replaced by an electric cylinder, a cylinder or a hydraulic cylinder.

[0047] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed by the present invention. Therefore, any bracket design for stabilizing the vehicle body and the device for changing the center of gravity by lateral movement are directly covered by the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A motorcycle rear wheel lateral movement device, comprising a lateral drive motor (8), a lead screw (9), a nut bearing (10), a transmission half shaft (11) and an auxiliary half shaft (12), wherein the outer end of the transmission half shaft (11) is connected to an engine (6), the transmission half shaft (11) and the auxiliary half shaft (12) are respectively rotatably connected to the two ends of a horizontal U-shaped frame arranged at the lower end of the rear side of a frame (2), the lateral drive motor (8) is fixedly connected to the frame (2) through a lateral motor frame (13), the auxiliary half shaft (12) is a hollow structure, the motor shaft of the lateral drive motor (8) is fixedly connected to the lead screw (9), the lead screw (9) passes through the auxiliary half shaft (12) and then cooperates with the inner ring nut of the nut bearing (10), the outer ring of the nut bearing (10) is fixedly connected to the inner hole in the middle of the rear wheel (4), the transmission half shaft (11) is a stepped shaft, and a plurality of guide shafts (14) are arranged at the inner end of the big head of the rear wheel (4), and the plurality of guide shafts (14) are movably passed through the rear wheel (4) and then connected to the inner end of the auxiliary half shaft (12), and a plurality of limit guide shafts (15) are arranged on the transverse motor frame (13), and the plurality of limit guide shafts (15) are evenly arranged around the circumference of the transverse drive motor (8) and are movably inserted into the inner ring nut of the nut bearing (10).

2. A motorcycle rear wheel lateral movement device according to claim 1, characterized in that: Four guide shafts (14) and four limit guide shafts (15) are respectively used.

3. A motorcycle rear wheel lateral movement device according to claim 1, characterized in that: One end of the lead screw (9) is fixedly connected to the motor shaft of the transverse drive motor (8) through a coupling, and the other end is rotatably connected to a bearing, which is installed in the inner hole of the inner end of the transmission half shaft (11).

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