CN2854909Y

CN2854909Y - Low speed motor of electric bicycle

Info

Publication number: CN2854909Y
Application number: CN 200520130739
Authority: CN
Inventors: 高成果; 赵德培; 吴进峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-23
Filing date: 2005-12-23
Publication date: 2007-01-03
Anticipated expiration: 2015-12-23

Abstract

The utility model relates to a slow-speed motor for electric bicycles, which comprises inner rotor (1), outer rotor (2), and clutch (3). The clutch (3) is used the transfer of torsional moment between the inner and outer rotors (1,2) and fixed in the outer rotor (2). The outer rotor (2) is supported by a shaft (5) to a bearing (6). When in use, the speed regulator rotates, the motor runs, the inner rotor (1) works and the outer rotor (2) is driven by the clutch (3) to rotate, thereby driving the electric bicycle to move forwards. When the speed regulator is released, the motor stops, the clutch (3) detaches, and only outer rotor (2) is rotated by inertia against the gearing (6) without the influence from magnetic pole attraction. Therefore, undamped motion of the electric bicycle is realized, with reduced power consumption and increased continued trip mileage (increased by over 20%) as compared with common bicycle. The utility model is also suitable for low speed brush motor and low speed brushless motor. The utility model has the advantages of undamped motion, remarkable effect of saving energy, simple structure and low cost.

Description

Low-speed motor for electric bicycle

Technical field:

The utility model belongs to the electric bicycle motor class, particularly relates to a kind ofly having that undamped slides, Remarkable Energy Saving electric bicycle slow-speed motor.

Background technology:

As everyone knows, the electric bicycle motor on the present market can be divided into two big classes: a class is to slow down by gear drive to drive the high-speed permanent magnetic direct current machine that has brush; Another kind of is directly to drive rotating speed less than 1000 rev/mins low-speed permanent-magnet direct current motor, this motor is divided into again two kinds of brush permanent magnet DC motor and brushless permanent magnet DC motors, existing electric vehicle motor all adopts magneto, though it has efficient height, advantage that volume is little.But because its magnetic pole all adopts permanent magnetic material (as ferrite, neodymium iron boron etc.), has very strong suction, under the idle situation of motor, need just can make rotor rotation with very big power, again because rotator inertia is little, and make electric motor car motor in the process of riding need running continuously, when motor quit work, the electric motor vehicle sliding ability was so power consumption is big, shorten the mileages of continuation of electric motor car greatly, shortened the useful life of motor simultaneously.

Summary of the invention:

Main purpose of the present utility model is to overcome above deficiency and provides a kind of has that undamped slides and Remarkable Energy Saving electric bicycle slow-speed motor.

The technical scheme that its technical problem that solves the utility model adopts is: it is made up of stator, rotor and axle, it is characterized in that: increase internal rotor 1 at motor internal, between inside and outside rotor 1,2, have clutch 3, clutch 3 usefulness screws 4 are fixed on the external rotor 2, and external rotor 2 is supported on the bearing 6 by axle 5.

The utility model can also adopt following technical scheme: described motor is that low speed has the brush motor, also can be the low speed brushless machine.

Advantage and the good effect that the utlity model has are: because increased internal rotor 1 and clutch 3, so, inside and outside rotor 1,2 moves respectively, make electric motor car have wheel function, its effect has surpassed the road speed of ordinary bicycle, and having significantly reduced power consumption, the electric motor car mileages of continuation also can increase more than 20%.

Description of drawings:

Fig. 1 is the structural representation of low-speed motor for electric bicycle.

Among Fig. 1: 1. internal rotor, 2. external rotor, 3. clutch, 4. screw,

5. axle, 6. bearing.

Embodiment:

For further understanding summary of the invention characteristics of the present utility model and effect following examples for example now, and conjunction with figs. is described in detail as follows, and sees also Fig. 1.

As shown in Figure 1: low-speed motor for electric bicycle is made up of internal rotor 1, external rotor 2, clutch 3, screw 4, axle 5 and bearing 6, because, increased internal rotor 1 at motor internal, between inside and outside rotor 1,2, come driving torque with clutch 3, clutch 3 usefulness screws 4 are fixed on the external rotor 2, external rotor 2 is supported on the bearing 6 by axle 5, when riding electric motor car, rotate the speed regulator on the handlebar, machine operation then, internal rotor 1 rotates, and drives external rotor 2 and rotates and drive electric motor car and advance by being fixed on clutch 3 on the external rotor 2; When the speed regulator that unclamps on the handlebar, motor is not worked, and clutch 3 is thrown off, have only external rotor 2 to rotate, because external rotor 2 is not subjected to the influence of magnetic pole suction, 2 of external rotors rotate by inertia on the bearing 6 at two ends, at this moment, external rotor 2 rotates very flexible, thereby makes electric motor car have wheel function, has realized that promptly undamped slides, its effect has surpassed common bicycle, reduced power consumption, simultaneously, the electric motor car mileages of continuation can increase more than 20%.The utility model can be used for low speed to be had on the brush motor, also can be used on the low speed brushless machine.Its advantage is: but undamped slides, energy-saving effect is remarkable, simple in structure, cost is low.

Claims

1, a kind of low-speed motor for electric bicycle, it is made up of stator, rotor and axle, it is characterized in that: increase internal rotor (1) at motor internal, between inside and outside rotor (1), (2), have clutch (3), clutch (3) is fixed on the external rotor (2) with screw (4), and external rotor (2) is supported on the bearing (6) by axle (5).

2, low-speed motor for electric bicycle according to claim 1 is characterized in that: described motor is that low speed has the brush motor, also can be the low speed brushless machine.