WO2007019784A1

WO2007019784A1 - A light electric bicycle

Info

Publication number: WO2007019784A1
Application number: PCT/CN2006/001976
Authority: WO
Inventors: Xiaohong Cui
Original assignee: Xiaohong Cui
Priority date: 2005-08-12
Filing date: 2006-08-04
Publication date: 2007-02-22
Also published as: CN2820682Y

Abstract

A light electric bicycle includes a vehicle frame, a handle, a front wheel, a rear wheel and a drive device. Said vehicle frame includes a hollow transverse tube. Said front wheel and rear wheel are connected with the vehicle frame by bearing, respectively. The handle is secured to a front fork. Said drive device includes a thin-cake permanent-magnetic DC motor, an accumulated energy system and a controller. The accumulated energy system is arranged in the transverse tube. Said permanent-magnetic DC motor is secured to one side of a driving wheel. A motor shaft is firmly connected with a pinion. A gearwheel engaging with the pinion is arranged on one side of the driving wheel. The light bicycle can be electrically driven. Also the bicycle can be used as a cambering vehicle by putting down the seat and making person stand on it. The motor can generate electricity and supply power by swing the person body, therefore the bicycle can run forward.

Description

Ultralight electric car

Technical field

The utility model relates to an electric vehicle, in particular to an electric vehicle with a power generation (or electric) device, which can be driven by the front and rear swing of the human body. Background technique

Electric vehicles are popular vehicles used in recent years. Commonly used are two-wheel bicycle models, including frame, handle, front and rear wheels and drive mechanism. In the prior art, two kinds of drive mechanisms are usually used at the same time. It is a motor-driven mechanism consisting of a battery, a controller and a motor. Although there is a friction-driven motor in the early days, the hub motor is basically used at the moment, and the other drive mechanism is a pedal mechanism, which is a pedal and a wheel. The disc, the chain and the flywheel are formed to act as an auxiliary drive.

The electric vehicle using the above drive mechanism has a complicated structure, a large volume, and a heavy weight. Preventing the battery from being discharged, adding a cumbersome and complicated pedal mechanism. Summary of the invention

The purpose of the utility model is to provide an ultra-light electric vehicle which can drive the vehicle forward by swinging back and forth between the human body.

In order to achieve the above object, the technical solution adopted by the utility model is: an ultra-light electric vehicle comprising a frame, a handle, a front wheel, a rear wheel and a driving mechanism, the frame comprising a hollow frame cross tube, front The wheel and the rear wheel are respectively connected to the frame through a bearing, and the handle is detachably fixedly connected to the front fork, and the driving mechanism comprises a pancake type permanent magnet DC motor, an energy storage mechanism disposed in the cross tube of the frame, and a controller, The permanent magnet motor is fixed on one side of the driving wheel, and one end thereof is directly connected with the wheel axle. A pinion gear is fixedly connected to the motor shaft, and a large gear is arranged on one side of the driving wheel and the pinion gear.

In the above technical solution, the driving wheel is a wheel directly connected to the driving mechanism, and may be a front wheel or a rear wheel.

In the present invention, the preferred technical solution is that the driving wheel is a front wheel, the pancake type permanent magnet DC motor is fixed on one side of the front wheel, the lower end is connected to the front wheel axle, and the upper end two holes pass through two bolts and the front The fixed piece on the fork is connected.

In the above technical solution, the large gear is an internal gear, and the pinion and the shaft on the motor shaft The internal gears are formed between the large gears.

Further, the large gear and the wheel rim are integrally formed by injection molding, and are usually prepared by using a composite material.

The controller lead wires in the cross tube of the frame are respectively connected to the motor from the front fork vertical tube, and the control handle mounted on the handle is connected upward.

The control circuit is provided with a start switch S1 and a brake switch S2, respectively driven by a start button and a control handle. When the start switch is turned on, the energy storage mechanism is in communication with the motor, and the brake switch is in the first position when the motor is The controller is connected, and the motor is short-circuited at both ends in the second position.

In the above technical solution, the frame further includes a front tube, and the front tube has a through hole penetrating through the horizontal tube of the frame along the axial direction of the horizontal tube of the frame, and the aperture of the through hole is larger than the outer diameter of the battery.

In the above technical solution, the handle is a T-shaped handle, and the lower end thereof is directly inserted into the front fork vertical pipe, and is locked by the S-shaped locking spring connecting handle.

In the above technical solution, the energy storage mechanism may be a capacitor; or may be a rechargeable battery. The utility model has two driving modes, one is a battery driving mode. When the energy storage mechanism is a rechargeable battery, the battery can be driven by the battery, and the output shaft of the motor drives the driving wheel to rotate through the gear transmission mechanism, so that the vehicle is forwarded. run.

The other is the human body swing drive mode, which first uses the push or battery drive to obtain an initial speed of the vehicle. In the process, due to the balance characteristics of the armature back electromotive force of the permanent magnet DC motor, the input voltage of the motor is equal to the power generation of the motor. Voltage, the voltage across the motor is the same as the voltage of the capacitor (or battery). After that, the human body swings back and forth in the car. According to the law of conservation of momentum, when the person swings forward, the vehicle will decelerate accordingly. When the person swings backwards, the vehicle will accelerate. Therefore, the speed of the vehicle body changes rapidly during the forward and backward swinging of the human body. of. When the vehicle accelerates, the voltage across the permanent magnet DC motor increases, charging the capacitor (or battery); and when the vehicle decelerates, the voltage across the permanent magnet DC motor tends to decrease, at this time, the capacitor (or battery) to the motor Power supply, the tendency to decelerate the vehicle is suppressed, so that the average speed of the vehicle in one cycle is increased. When the acceleration trend is equal to the deceleration trend of the vehicle being subjected to friction, wind, etc., the vehicle advances at a certain average speed. . During this process, the force of the human body swinging back and forth is converted into a driving force for forward motion, thereby utilizing a pancake type permanent magnet DC motor (electric-power generation) to advance the car.

In addition, when the brake switch is pressed, the motor is short-circuited at both ends, and the motor generates a magnetic resistance to generate electric resistance, which causes the electric vehicle to brake. Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

1. The utility model adopts a DC permanent magnet motor, and cooperates with an energy storage mechanism, can realize driving by using the front and rear swing of the human body, thereby eliminating the need for a pedal driving mechanism, simplifying the structure of the electric vehicle, and greatly reducing the weight of the whole vehicle;

2. The utility model adopts a large gear which is integrally injection-molded on the wheel, has low cost and stable size, and is provided with a mudguard ring in the large gear, so that the drive gear shifting system is beautiful and safe, and the service life of the gear wheel is improved;

3. The battery of the utility model is directly placed in the horizontal tube of the frame, which saves the battery box and has the battery anti-theft function.

4. The motor of the utility model is directly mounted on one side of the wheel to ensure the meshing precision of the gear.

5. The ultra-light electric vehicle of the utility model can be electrically driven, and the seat cushion can be placed on the human body to stand as a scooter to slide, and the human body can swing and drive the motor to generate electricity and power before and after the body stands, so that the car can drive forward. Magical function, ultra-light weight (6Kg), easy to carry and use. It can be used without electricity or electricity. DRAWINGS

1 is a schematic structural view of a first embodiment of the present invention;

2 is an enlarged schematic view showing the structure of a motor drive gear in the first embodiment;

Figure 3 is a schematic view of the control handle;

4 is a schematic diagram of a controller circuit in the first embodiment;

Figure 5 is a folding effect diagram;

Figure 6 is a schematic view of the action of the quick release structure (enlarged);

Figure 7 is a schematic structural view of a second embodiment of the present invention;

Figure 8 is a schematic diagram of the rotational speed of a rocking drive motor.

Among them: [1], control handle; [2], handle; [3], quick release handle; [4], controller lead line; [5], pancake type permanent magnet DC motor; [6], mudguard [7], large gear; [8], frame cross tube; [9], battery; [10], start button; [11], head tube; [12], step board; [15], pinion [16], front fork; [18], controller; [19], lock spring; [20], capacitor. detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Embodiment 1 : Referring to Figures 1 to 6, an ultra-light electric vehicle includes a frame, a handle 2, a front wheel, a rear wheel and a driving mechanism, and the frame includes a hollow frame horizontal tube 8, The front wheel and the rear wheel are respectively connected to the frame through a bearing, and the handle 2 is fixedly connected with the front fork 16. The driving mechanism comprises a pizza type permanent magnet DC motor 5, a rechargeable battery 9 disposed in the frame horizontal tube 8 and control The first wheel is used as a driving wheel, and the controller lead wire 4 in the cross tube 8 of the frame is connected downwardly from the front fork vertical pipe to the motor, and the control handle mounted on the handle is connected upward, and the permanent magnet motor is fixed. On the side of the front wheel, the lower end is connected to the front wheel axle, and the upper end two holes are connected with the fixing piece on the front fork through two bolts, and the pinion 15 is fixedly connected to the motor shaft, and the front wheel side is matched with the pinion gear 15 to have a large The gear 7 is an internal gear, and the pinion 15 on the motor shaft and the large gear 7 are internally meshed.

In this embodiment, the large gear 7 and the wheel rim are integrally injection molded structures using a composite material, and the large gear 7 is provided with a mudguard ring 6.

The handle adopts a T-shaped handle, and the T-shaped lower end is directly inserted into the front fork vertical tube, and is locked by the quick release handle 3 and the S-shaped locking spring 19, see Fig. 6: When the quick release handle 3 is opened, S The shaped locking spring moves into the tube and the T-shaped handle can be pulled out of the front fork standpipe. When the lower end of the T-shaped insert is completely inserted into the front fork vertical tube, when the quick-release handle is assembled, the convex portion of the central crescent-shaped portion of the S-shaped spring passes through the T-shaped lower end pipe wall notch and is placed on the concave point of the inner wall of the front fork vertical pipe, and is firmly fixed. The T-shaped handle is locked on the front fork standpipe, which is light and safe and easy to fold.

The frame further includes a front tube 11, and the front tube 11 has a through hole penetrating the cross tube 8 of the frame along the axial direction of the horizontal tube 8 of the frame, and the aperture of the through hole is larger than the outer diameter of the battery.

Referring to FIG. 4, the control circuit of the embodiment is provided with a start switch S1 and a brake switch S2, which are respectively driven by the start button 10 and the control handle 1. When the start switch is turned on, the rechargeable battery is connected to the motor. When the brake switch is in the first position, the motor is in communication with the controller, and in the second position, the motor is short-circuited at both ends.

Embodiment 2: Referring to FIG. 7, an ultra-light electric vehicle adopts a scooter model, including a frame with a hollow frame cross tube 8, a front wheel, a rear wheel, a handle 2 and a motor, and the rear wheel is driven. The motor is a pancake type DC permanent magnet motor mounted on one side of the rear wheel, and a capacitor 20 and a controller are arranged in the cross tube 8 of the frame, and a start button 10 and a control handle 1 are arranged on the handle, respectively. Start switch and brake switch in the device.

When using, first drive the slide with the pedal, the motor charges the capacitor, after a certain speed, The human body stands on the horizontal tube pedal, swings the body back and forth, and when it swings backward, the motor charges the capacitor. When swinging forward, the capacitor supplies power to the motor, thereby moving the vehicle forward.

This embodiment is particularly suitable for use as an entertainment and gaming vehicle.

Claims

Rights request:

An ultra-light electric vehicle comprising a frame, a handle [2], a front wheel, a rear wheel and a driving mechanism, the frame comprising a hollow frame cross tube [8], the front wheel and the rear wheel respectively passing The bearing is connected to the frame, and the handle [2] is detachably fixedly connected to the front fork [16], wherein: the driving mechanism comprises a pizza type permanent magnet DC motor [5], and is disposed on the frame horizontal tube [8]. The internal energy storage mechanism and the controller, the permanent magnet DC motor is fixed on one side of the driving wheel, one end of which is directly connected with the wheel axle, and the pinion gear is fixedly connected to the motor shaft

[15], the driving wheel side is provided with a large gear [7] in cooperation with the pinion [15], the large gear [7] is an internal gear, and the pinion [15] on the motor shaft is large with the large gear Internal gearing is formed between the gears [7].

2. The ultra-light electric vehicle according to claim 1, wherein: the driving wheel is a front wheel, the pancake type permanent magnet DC motor [5] is fixed to one side of the front wheel, and the lower end is connected to the front wheel shaft. The upper two holes are connected to the front fork upper fixing piece by two bolts.

3. The ultra-light electric vehicle according to claim 1, wherein: the large gear [7] is integrally formed with the wheel rim.

4. The ultra-light electric vehicle according to claim 1, wherein: the controller lead wire [4] in the cross tube [8] of the frame is connected downwardly from the front fork vertical pipe to the motor, and is connected upwardly. Control handle on the handle [11.

The ultra-light electric vehicle according to claim 4, wherein: the control circuit is provided with a start switch S1 and a brake switch S2, respectively driven by a start button [10] and a control handle [1], When the start switch is turned on, the energy storage mechanism is in communication with the motor. When the brake switch is in the first position, the motor is in communication with the controller, and in the second position, the motor is short-circuited at both ends.

6. The ultra-light electric vehicle according to claim 1, wherein: said energy storage mechanism is selected from one of a capacitor and a rechargeable battery.

7. The ultra-light electric vehicle according to claim 1, wherein: the frame further comprises a front tube [11], and the front tube [11] is opened along an axial direction of the frame [81] The through hole of the frame cross tube [8], the diameter of the through hole is larger than the outer diameter of the battery.

8. The ultra-light electric vehicle according to claim 1, wherein: the handle [2] is a T-shaped handle, the lower end of which is directly inserted into the front fork standpipe, and is locked by the S-shaped lock spring connection handle.