CN2792926Y - Portable electric speed-variating bicycle - Google Patents

Abstract

The utility model relates to a portable electric speed changing bicycle which comprises a front wheel, a back wheel, a handlebar, supporting beams, pedals, a chain wheel connected with a pedal crank, a back bicycle seat, etc. The utility model is characterized in that a back supporting beam is provided with a motor, a rotating axle of the back wheel is provided with two rows of chain wheels which are respectively a back chain wheel used for an electric bicycle and a back chain wheel used for manually pedaling the bicycle, the output axle end of the motor is provided with a chain wheel, the back chain wheel used for an electric bicycle and the chain wheel of the output axle end of the motor are connected by a chain, and the chain wheel connected with the pedal crank and the back chain wheel used for manually pedaling the bicycle are connected by a chain. The output axle end of the motor can be provided with a big set of chain wheels and a small set of chain wheels. The chain between the back chain wheel used for an electric bicycle and the chain wheel of the output axle end of the motor is provided with a chain shifting device which is connected with a speed changing turn knob arranged on the handlebar by a speed changing steel wire. The utility model has the advantages of compact structure and speed changing function. The bicycle can be manually pedaled and electrically driven.

Description

Light speed change Electrical Bicycle

Technical field

The utility model relates to the dual-purpose electric bicycle of a kind of light not only available power but also available manpower.

Background technology

The portable bicycle that vehicle is small and exquisite is subjected to the favor in market at present, and its structure is the Regular Bicycle structure, and power is by manpower to pedal.Load onto electrical motor on the bicycle, liberated the welcome that manpower also has been subjected to people by battery-driven Electrical Bicycle, the mounting means of electrical motor has nothing in common with each other.Although the technology of variable speed bicycle is arranged, on Electrical Bicycle, increase speed changing function, yet there are no similar products on the market.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of light speed change Electrical Bicycle, and electrical motor is independently installed, and compact conformation is realized speed changing function simultaneously.

The light speed change Electrical Bicycle of the utility model, comprise front-wheel, trailing wheel, handlebar, support beam, back vehicle seat, it is characterized in that on the support beam of described back, electrical motor being installed, the motor output shaft end has big or small two groups of sprocket wheels, the trailing wheel rotating shaft has sprocket wheel, be connected chain between rear wheel sprocket and the motor output shaft end sprocket wheel, chain puller is set on the chain, chain puller is connected with speed change knob on being arranged on handlebar by the speed change steel wire.

Electrical motor can be connected with storage battery according to the frame mode of general Electrical Bicycle, actuating motor, and electrical motor drives rear wheel sprocket by chain and rotates, and rotates thereby drive the trailing wheel rotating shaft, makes the bicycle operation.Chain puller is connected with speed change knob on being arranged on handlebar by the speed change steel wire, makes Electrical Bicycle increase speed changing function.In the process of riding, run into climbing, against the wind or under the big situation of load carrying ability, can forward the speed change knob at a slow speed to, the speed change knob forwards on the minor sprocket to increase driving torque the chain on motor output shaft end hinge wheel to by speed change steel wire control chain puller; On the contrary, as improving moving velocity, then the speed change knob on fast, the chain that is about on the motor output shaft end minor sprocket forwards on the hinge wheel.Whole process operation is simple.

Electrical motor of the present utility model both can be installed on the pedal-type bicycle, also can be installed on the pedal type bicycle.In the time of on being installed in pedal type bicycle, the bicycle rear rotating shaft is a duplex chain wheel, be respectively behind the electric vehicle sprocket wheel and manpower and use the back sprocket wheel to pedal, be connected chain between sprocket wheel and the motor output shaft end sprocket wheel behind the electric vehicle, with the sprocket wheel of foot-operated crank connecting link and manpower to pedal with being connected chain between the sprocket wheel of back.Actuating motor is the electric operation mode; Close electrical motor, can drive manpower with foot-operated mode by original sprocket wheel (with the sprocket wheel of foot-operated crank connecting link) and use the back sprocket rotation to pedal, rotate, make the bicycle operation thereby drive the trailing wheel rotating shaft as Regular Bicycle.

Described speed change knob, speed change steel wire, chain puller have constituted change-speed box, frame mode can adopt known bicycle speed-varying unit structure, the utility model provides following a kind of frame mode: the bicycle chain puller is made up of shift fork and the parallelogram shape four-bar mechanism that is hinged, and chain is inserted in the middle of the shift fork.Be connected the speed change steel wire between shift fork and the speed change knob, rotate the speed change knob, pulling speed change steel wire changes the shift fork power thrusts, thereby moves chain to diverse location.The parallelogram shape four-bar mechanism that is hinged, variable-length, the direction that adapts to shift fork changes.

The utility model electrical motor is independent fully installs compact conformation.On the chain behind the electric vehicle between sprocket wheel and the motor output shaft end sprocket wheel chain tension device can be set, tension device can adopt the various frame modes of known technology.

Because vehicle seat is shorter behind the portable bicycle, the band people is just very inconvenient.Perhaps on the vehicle seat of back, put baggage container, just no longer conveniently be with other thing.The utility model can be set up on the vehicle seat of described back and increase vehicle seat, and an end of increasing vehicle seat is connected with bracing frame by supporting revolving shaft, and bracing frame is fixed on the vehicle seat of back.So just can place article on the vehicle seat increasing, owing to increase vehicle seat and increase, can be used to manned simultaneously than former back vehicle seat.When the back had baggage container on the vehicle seat, baggage container places increased vehicle seat with afterwards between the vehicle seat, and back vehicle seat can be connected between the vehicle seat from padlock with increasing, and not only protects baggage container, and has supporting role.

Advantage of the present utility model:

Compact conformation, but both manpower to pedal, but also electric bicycle also has speed changing function simultaneously.Increase the back vehicle seat, not only help baggage container and place article, can also carry other article or manned.

Description of drawings

Fig. 1 is an integral structure scheme drawing of the present utility model;

Fig. 2 is electronic, speed changing function structural representation;

Fig. 3 is a back saddle construction scheme drawing.

Among the figure: 1 increases vehicle seat 2 luggage cases 3 trailing wheel rotating shafts 4 chain tensioning devices 5 motor chains 6 motor output shaft end sprocket wheels 7 manpowers sprocket wheel 24 shift forks 25 four-bar mechanisms 26 bracing frames 27 supporting revolving shafts 28 that sprocket wheel 13 manpowers are connected with crank with rear sprocket wheel 14 motor output shaft end minor sprockets 15 motor output shaft end hinge wheels 16 cranks 17 foot-operated 18 front-wheels, 19 trailing wheels, 20 handlebars, 21 disc springs, 22 connecting rods 23 to pedal behind chain 8 chain pullers 9 speed change steel wires 10 shift knobs 11 brace summers 12 electric vehicles to pedal from padlock 29 rear vehicle seats

The specific embodiment

Fig. 1～3 are respectively example structure scheme drawing of the present utility model.

The utility model integral structure framework still comprise front-wheel 18, trailing wheel 19, handlebar 20, support beam 11, foot-operated 17, crank 16, with parts usually such as the sprocket wheel 23 of foot-operated crank connecting link, back vehicle seat 25, on the support beam 11 of back electrical motor being installed (is connected with storage battery according to known technology, omit among the figure), the motor output shaft end has two group coaxial sprockets 6, one group is that 15, one groups of hinge wheels are minor sprocket 14.Trailing wheel rotating shaft 3 is a duplex chain wheel, be respectively behind the electric vehicle sprocket wheel 12 and manpower and use back sprocket wheel 13 to pedal, be connected electrical motor chain 5 between sprocket wheel 12 and the motor output shaft end sprocket wheel behind the electric vehicle, with the sprocket wheel 23 (original bicycle chainwheel) of foot-operated crank connecting link and manpower to pedal with being connected manpower chain 7 to pedal between the sprocket wheel 13 of back.The chain tension device is set on the electrical motor chain 5, a kind of frame mode of chain tension device is: for being fixed on two wheels on the support beam of back, connect by pipe link 22 between two wheels, have disc spring 21 on the pipe link 22, one end of disc spring 21 is fixed on the center of pipe link 22, and the other end is fixed on the pipe link away from the center.Two wheels are respectively in upper and lower two positions of electrical motor chain.When electrical motor chain 5 was on motor output shaft end hinge wheel 15, two wheels of tension device drove pipe link 22 and rotate, and disc spring 21 is tightened up; When electrical motor chain 5 forwarded on the motor output shaft end minor sprocket 14, the position of two wheels of tension device changed, and disc spring 21 resets simultaneously, and the tensioner chain 5 once more.

Chain puller 8 is set on the electrical motor chain 5, and chain puller is connected with speed change knob 10 on being arranged on handlebar by speed change steel wire 9.Chain puller is made up of shift fork 24 and the parallelogram shape four-bar mechanism 25 that is hinged, and electrical motor chain 5 is inserted in the middle of the shift fork 24.Speed change steel wire 9 is connected with shift fork, rotates speed change knob 10, and pulling speed change steel wire 9 changes shift fork 24 power thrusts, thereby moves chain to diverse location.The parallelogram shape four-bar mechanism 25 that is hinged, variable-length, the direction that adapts to shift fork changes.When running into climbing, against the wind or under the big situation of load carrying ability, can forwarding the speed change knob to full gear, the speed change knob forwards on the minor sprocket to increase driving torque the electrical motor chain on motor output shaft end hinge wheel to by speed change steel wire control chain puller; On the contrary, as improving moving velocity, then the speed change knob on fast.

As Fig. 3, on the vehicle seat 29 of former back, to have set up and increased vehicle seat 1, an end of increasing vehicle seat 1 is connected with bracing frame 26 by supporting revolving shaft 27, and bracing frame 26 is fixed on the vehicle seat 29 of back.Baggage container 2 places to be increased between vehicle seat 1 and the back vehicle seat 29, and back vehicle seat is connected between the vehicle seat from padlock 28 with increasing.Increase vehicle seat 1 and be the openable structure, will increase vehicle seat 1 to mention, unclamp from padlock 28 simultaneously, can not hinder the use of baggage container 2.After using up, will increase vehicle seat 1 and put down, one clap gently, from padlock 28 auto locks.Played the effect of increasing vehicle seat of supporting simultaneously from padlock.

Claims (6)

1, a kind of light speed change Electrical Bicycle, comprise front-wheel, trailing wheel, handlebar, support beam, back vehicle seat, it is characterized in that on the support beam of described back, electrical motor being installed, the motor output shaft end has big or small two groups of sprocket wheels, the trailing wheel rotating shaft has sprocket wheel, be connected chain between rear wheel sprocket and the motor output shaft end sprocket wheel, chain puller is set on the chain, chain puller is connected with speed change knob on being arranged on handlebar by the speed change steel wire.

2, Electrical Bicycle according to claim 1, it is characterized in that described trailing wheel rotating shaft is a duplex chain wheel, be respectively behind the electric vehicle sprocket wheel and manpower and use the back sprocket wheel to pedal, be connected chain between sprocket wheel and the motor output shaft end sprocket wheel behind the electric vehicle, with the sprocket wheel of foot-operated crank connecting link and manpower to pedal with being connected chain between the sprocket wheel of back.

3, Electrical Bicycle according to claim 2 is characterized in that on the chain between the sprocket wheel and motor output shaft end sprocket wheel the chain tension device being set behind the electric vehicle.

4, Electrical Bicycle according to claim 1 is characterized in that described chain puller is made up of shift fork and the parallelogram shape four-bar mechanism that is hinged, and chain is inserted in the middle of the shift fork.

5, Electrical Bicycle according to claim 1 is characterized in that setting up on the vehicle seat of described back and increases vehicle seat, and an end of increasing vehicle seat is connected with bracing frame by supporting revolving shaft, and bracing frame is fixed on the vehicle seat of back.

6, Electrical Bicycle according to claim 5 is characterized in that the back has baggage container on the vehicle seat, and baggage container places increases vehicle seat with afterwards between the vehicle seat, and back vehicle seat is connected from padlock with increasing between the vehicle seat.