CN2049623U - Electric bicycle - Google Patents

Abstract

The utility model discloses an electric bicycle which can adopt respectively the electric drive, the feet pedal drive and the combined drive of the electric drive and the feet pedal drive. The permanent-magnetism direct-current brushless and low-speed motor is arranged directly on a rear axle shaft, a speed changer and an accumulator cell dispense with being arranged at the lower part of a bicycle beam, and a power level indicator is arranged on a headlight. Compared with the existing electric bicycle, the utility model has the advantages of high efficiency, simple structure, light weight, convenient operation and comfortable and safe ride, and has long driving range with one-time charging.

Description

Electric bicycle

The utility model relates to a kind of Electrical Bicycle, belongs to extraordinary bicycle.It has kept the basic characteristics of portable bicycle, has increased electrically operated function, be a kind of promptly can direct motor drive, can drive by pedal again, can also electrical motor with the pedal while also usefulness unite driving.

The Electrical Bicycle of Sichuan Province Mianyang City State-Run chaoyang Machinery Factory (number of patent application is 87203736).It is made of tap, saddle, battery, battery box, vehicle frame, electrical motor chain, front fork, shock absorber, pedal chain, front-wheel, trailing wheel, lamp yoke, headlight, pedal, electrical motor etc.But its motor torque transmits by a secondary special chain.The seat tube position of battery box under saddle.The shortcoming of this Electrical Bicycle is: capacity usage ratio is low, and body gravity is higher, and how many difficult judgements of the energy of battery stores in addition damage storage battery because of overdischarge easily.

The purpose of this utility model is intended to overcome the shortcoming of prior art, and a kind of little power consumption is provided, and body gravity is lower, and is safe and reliable, Electrical Bicycle easy to maintenance.

Concrete scheme is as follows: on the architecture basics of portable bicycle, a permanent-magnet DC brushless low-speed motor is installed on its hind axle, constitutes the electric driver of this car again with battery bracket, storage battery and automatically controlled circuit etc.

The permanent-magnet DC brushless low-speed motor that the utility model adopted is that number of patent application is 85201783 utility model patent.Its motor shaft is made the hind axle of Electrical Bicycle of the present utility model, and assembly relation such as its chain stay, flywheel and ordinary bicycle are as good as.One end of trailing wheel spoke is directly installed on the rotor block of the motor left and right sides, and motor left and right sides rotor block is provided with special spoke hole (eight shape hole), in order to the dismounting of spoke, can be under the situation of not tearing trailing wheel open, and the electrical motor of removing stage makeup and costume easily.The left and right sides rotor block of electrical motor that is characterised in that of the present utility model is provided with the special hole that spoke is installed, and is used for driving motor and trailing wheel are formed rear wheel assembly.This has just got rid of the shortcoming of mechanical speed change transmission of the Forever brand DX-130 type Electrical Bicycle of Shanghai No.2 Bicycle Works, and having got rid of number of patent application simultaneously again is a secondary electrical motor chain of device in 87203736.Thereby more effectively utilized motor efficiency, greatly reduced mechanicalness noise, improved the comfort feature of electrical motor dismounting maintenance simultaneously.

One secondary chain is installed on this Electrical Bicycle, gives trailing wheel with its transmitting torque when its effect is pedal, car body is travelled.When electricity consumption was driven, this car was exactly an ordinary bicycle.Under the energized situation, in advance pedal drives, and when the speed of a motor vehicle reaches about 7km/h, the permanent-magnet DC brushless low-speed motor on the hind axle just can start, and this moment, car just can travel in electric driving.Also can unite driving with pedal and electrical motor simultaneously.When particularly on sloping road, travelling,, unite when driving and benefit increasing battery charge continual mileage once with the climbing of pedal power-assisted.

The electricity parts ［ 8 ］ of stopping are housed under the frame part ［ 7 ］, and Associated brake mode that this mechanism has adopted electricity to stop ［ 8 ］ leading rim brake both can reduce energy content of battery loss, can realize speed governing again.When pinching left hand brake lever, earlier the path of storage battery to the electrical motor main winding cut off, i.e. electrical motor output drive strength square not, but wheel still continues rotation under effect of inertia, slow down under drag effect.In fact constitute manually modulating frequency and width circuit at random, thereby saved mechanical speed change mechanism, or comparatively complicated electronic speed-regulating circuit and mechanical clutch mechanism.

Supply unit of the present utility model, the lead-acid battery of a 24V good airproof performance of employing or good airproof performance, the few maintenance or non-maintaining colloid storage battery are to alleviate complete vehicle weight.Storage battery is placed in the battery bracket of crossbeam below, so that the car load center of gravity reduces, it is more reliable to ride.The device that hangs tag is adopted in the attaching of storage battery framework on car body, thereby makes the storage battery loading and unloading quite convenient.

In order to increase more convenience for the Electrical Bicycle user, on headlight, set up storage battery level indicating device.This device adopts meter pointer and light warning indication and uses scheme.In the time of in storage battery is in normal working voltage scope, meter pointer is indicated between 21.6-24V, and green light is bright.After storage battery used a period of time, when terminal voltage was reduced to 21.6V, not only meter pointer referred in red color area, and green light extinguishes, and the red light flashing light alarm is reminded the user, and storage battery should charge immediately, otherwise will damage storage battery.

Accompanying drawing has been described the scheme drawing of the utility model embodiment.

Fig. 1 is an Electrical Bicycle scheme drawing of the present utility model.

Fig. 2 is the assembling relationship figure of the trailing wheel of Electrical Bicycle of the present utility model.

Fig. 3 is rim brake of the present utility model, the electricity interlock schematic diagram of stopping.

Fig. 4 is battery cradle and scheme of installation thereof.

Fig. 1 is the total arrangement sketch of a kind of embodiment of the present utility model, has reflected headlight and level indicator ［ 3 ］, storage battery ［ 6 ］, battery bracket ［ 5 ］, electricity stop parts ［ 8 ］, shield part ［ 4 ］, axis parts ［ 9 ］, support component ［ 10 ］, bracket component ［ 11 ］, the electrical motor relative position of parts in Electrical Bicycle such as ［ 12 ］.

Fig. 2 has reflected the assembling connecting relation of the utility model Electrical Bicycle trailing wheel, reflected that simultaneously the permanent-magnet DC brushless low-speed motor surface structure that the utility model adopted designs two essential characteristics: 1, this motor reel is designed to and the shared one of the hind axle of Electrical Bicycle, on shaft extension, is provided with installation site and fastening structure that car chain stay, flywheel, the lock that rises are installed; 2, the left and right sides rotor body disc of electrical motor is provided with the special hole (8 word hole) that convenient spoke removes and installs usefulness.Front elevation has reflected the assembling connecting relation of electrical motor with rise lock, spoke, rim, tire.

Fig. 3 has reflected the stop structure action groundwork figure of link gear of this practical brake lever, electricity.When in a single day needing Reduced Speed Now or brake in riding, bicyclist's pinching rim brake is ［ 14 ］, control effort is put on rim brake ［ 14 ］, brake lever ［ 14 ］ promptly breaks away from conducting strip ［ 17 ］, make the relay contact action in the brake part ［ 8 ］, cut off the supply access of electrical motor main winding rapidly, electrical motor stops to export rotating torque immediately, continue pinching brake lever ［ 14 ］ then, check trailing wheel by brake cable, the lock that rises etc.

Fig. 4 reflects the assembly relation of storage battery ［ 6 ］, framework ［ 24 ］ and the carriage of present embodiment.The two ends of frame card ［ 23 ］ respectively are provided with a U type and hang tag, and corresponding framework ［ 24 ］ is provided with two inverted Us and hangs tag.After being suspended to the framework ［ 24 ］ of loading onto storage battery in advance on the frame card ［ 23 ］, be tightened in the housing screw ［ 21 ］ on the frame card ［ 23 ］ again.Withstand pressing plate ［ 22 ］ with housing screw ［ 21 ］, storage battery is stabilized in framework ［ 24 ］ lining.Sequence of operation just in time in contrast during dismounting.

Drawing reference numeral explanation: ［ 1 ］ front component ［ 2 ］ front fork ［ 3 ］ headlight and level indicator ［ 4 ］ guard shield ［ 5 ］ power supply carriage ［ 6 ］ battery ［ 7 ］ vehicle frame ［ 8 ］ electricity parts ［ 9 ］ middle axles ［ 10 ］ of stopping support ［ 11 ］ support ［ 12 ］ electric motor assembly ［ 13 ］ wheel assembly ［ 14 ］ rim brake ［ 15 ］ brake backguy ［ 16 ］ insulating trip ［ 17 ］ conducting strip ［ 18 ］ electricity control line ［ 19 ］ brake lever fixed mount ［ 20 ］ lock ［ 21 ］ housing screw ［ 22 ］ pressing plate ［ 23 ］ frame card ［ 24 ］ framework ［ 25 ］ spoke ［ 26 ］ rim ［ 27 ］ motor shaft ［ 28 ］ flywheel ［ 29 ］ tire that rises of stopping

Compared with prior art, the utlity model has following characteristics:

One, simple and reasonable for structure, efficient is high.

It number is 85201783 utility model patent permanent-magnet DC brushless slow-speed motors that this electric bicycle adopts application, and its adopts electronic commutation technology to replace the mechanical commutation technology, have noise low, disturb less, the efficient advantages of higher. Motor, spoke and trailing wheel are assembled into an overall structure in the former patent technology. Must be with the rear wheel assembly integral demounting when the detachable maintaining motor, the utility model is characterized in that an ad hoc 8-shaped spoke hole, as long as motor is relatively rotated a little angle, just can take out spoke, makes motor throw off from trailing wheel, unload. The motor of present embodiment directly is contained on the rear wheel shaft, has saved machine driving mechanism, has avoided the machine driving loss, has improved whole car efficient.

This car uses back brake brake in travelling, when not stopping dead braking fully, this electronic function is converted to generating state automatically, with electric energy to charge in batteries on the car, thereby prolonged this car charging continual mileage once.

Two, easily start, reflect rapid, safe and reliable.

When this car is ridden, should ride with pedal earlier, when the speed of a motor vehicle reaches the 7km/h left and right sides. Motor just can be exported moment, drives electric bicycle and gives it the gun. It is lowlyer fixed that the used motor of this car will start when design, so only need suddenly pedal pedal, just can reach the purpose that starts motor.

This electric bicycle has also designed the linkage work mode of the leading rim brake machinery of electric braking braking. In case pinching rim brake handle just makes brake lever and conducting strip ［ 17 ］ break away from, make the relay contact action in the brake part ［ 8 ］, cut off the electric pathway that supplies of motor main winding, motor stops to export torque immediately. The only Reduced Speed Now under the inertia effect of car this moment. The speed of this car design is not high, and reaction flexibly. This car only adopts a battery power supply, has alleviated whole car weight amount. Battery places below the car beam, makes center of gravity on the low side, and it is reliable to ride.

Three, use, easy to maintenance.

The connection of electrical motor, spoke and trailing wheel is to realize by be provided with special spoke hole on electrical motor left and right sides rotor block (dish), during dismounting if with electrical motor with respect to low-angle displacement of back crop rotation, just electrical motor can be unloaded down easily.

The charging of storage battery, ad hoc on the Electrical Bicycle vehicle frame have a charging socket, also can unload storage battery easily, moves suitable local charging.

The utility model has used few maintenance of good seal performance or non-maintaining colloid storage battery, also can save service time.

Claims (5)

1, a kind of Electrical Bicycle that constitutes by tap, saddle, battery [6], battery box [5], vehicle frame [7], electrical motor chain, front-wheel, trailing wheel, pedal, electrical motor [12] etc., it is characterized in that permanent-magnet DC brushless low-speed motor and trailing wheel composition rear wheel assembly, be the hind axle of Electrical Bicycle.

2,, it is characterized in that battery bracket (5) is below frame beam (7) according to right 1 described Electrical Bicycle.

3, according to right 1 or 2 described Electrical Bicycles, the two ends that it is characterized in that being fastened on the frame card (23) under the frame beam (7) are respectively established a U type and are hung tag, and 2 inverted Us hang tag on the opposite position of framework (24).

4,, it is characterized in that having set up on the headlight (3) storage battery level indicator (3) according to right 1 or 2 described Electrical Bicycles.

5, according to right 1 described Electrical Bicycle, it is characterized in that electric brake parts (8).It is made of stop control line (18), the lock that rises (20) and piston ring of (14), brake cable (15), insolator disc (16), conducting strip (17), electricity rim brake.

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