CN2137234Y - Step-speed-variable power-asisted bicycle - Google Patents

Abstract

The utility model relates to a step speed changing assisted vehicle which comprises a single rotary mechanism, a driving mechanism and a control mechanism. The single rotary device can make the inflection leg of the front sprocket un-rotating. When the machine is rotary, the back vehicle wheel is rotated by the driving of the small groove wheel, the front chain wheel, the chain, the back chain wheel and the transmission, the transmission is adjusted and the step speed changing is reached. The machine can move frontward and backward through the adjustment of the releasing device and the small groove wheel and the front chain wheel can be meshed and detached. When the small groove wheel and the front chain wheel are detached, the utility model recovers the performance of the normal cycle. The control mechanism which is the controlling handle of a clutch is used with a skid handle; the handle rotates along the level, the space of the outside end of the small bulge is enlarged and the control of the clutch can be realized through the pulling of the steel cable in the stay wire. When the controlling handle rotates upward, the normal skid function can be realized.

Description

Step-speed-variable power-asisted bicycle

The utility model includes a grade Variable speed motor-assisted bicycle.More particularly exactly boosted vehicle and rim brake variable speed bicycle are combined, utilize bicycle speed-varying unit that power-assisted is realized step change.

The boosted vehicle in past has friction tire wheel drive, and this boosted vehicle advantage is simple in structure, and declutching during art skating can be very little as conventional bicycle resistance of taxing.Shortcoming is that the tire abrasion is too fast, can not realize step change, and it is low that machine transmits benefit.A class boosted vehicle is exactly to install machine additional on the bicycle of conventional structure again, and machine drives rear wheel by sprocket wheel or gear transmission and rotates, and this class boosted vehicle advantage is the transmission efficiency height.Shortcoming is a complex structure, the cost height.Must declutch when art skating, rear wheel rotates by sprocket wheel or gear driven machine intimate gear, and comparing with bicycle has increased resistance of taxing.

The purpose of this utility model is to overcome above-mentioned shortcoming and defect, provides a kind of and can realize step change, the transmission efficiency height, simple in structure, do not need during art skating to declutch, just can be less as long as reduce throttle or kill engine as conventional bicycle resistance of taxing.

In order to achieve the above object, the utility model step change boosted vehicle is by the single rotation mechanism that is fixed on the axis, and the driver train that links to each other with single rotation mechanism is constituted with the control mechanism that the machine power-transfer clutch links to each other with steel rope.The preceding sprocket wheel that said single favourable turn tool is exactly a bicycle is fixed on single the commentaries on classics on the device, and single device that changes is fixed on again on the axis, turns leg and is fixed on the axis, and preceding sprocket wheel turns leg when rotating forward not to be changeed, and turn drive when leg rotates forward before sprocket wheel rotate together.Machine is installed on the disconnector, and disconnector is fixed on the vehicle frame below the axis.Fixing a small grooved wheel on the machine output shaft, small grooved wheel is meshed with preceding sprocket wheel, when machine turns, sprocket rotation before small grooved wheel drives, preceding sprocket wheel drives rear wheel and rotates by chain, back sprocket wheel, change-speed box, also can install a minor sprocket additional on the machine output shaft, and middle sprocket before minor sprocket is fixed on by the chain drive on the sprocket wheel and preceding sprocket wheel are with changeing, adjust disconnector machine is moved forward and backward, make small grooved wheel and preceding sprocket wheel on the machine output shaft realize engagement and disengagement.After small grooved wheel and the disengagement of preceding sprocket wheel, just recover conventional bicycle performance.Said clutch control mechanism handle and a brake handle are shared, its structure is brake handle to be cut in two near the position of holding link to each other with an articulated mounting, at the intercepted two-end-point of handle place to the outer horizontal vertical direction small embossment of respectively burn-oning, a hole is respectively bored in the outer end of small embossment, is fixing the steel rope and the overcoat of clutch cable respectively.When handle when level is inwardly rotated, the outer end spacing of small embossment strengthens, thus the steel rope in the pulling backguy is realized the control to power-transfer clutch.When control handle upwards rotates, can realize conventional brake function.The shared forward and backward sprocket wheel of this step change boosted vehicle machine and people, chain and change-speed box, can be to the Realization by Machine step change, no matter upward slope or descending machine can both turn round, and keep lower gas consumption rate under more satisfactory operating mode, make the efficient running of machine.The same trailing wheel with bicycle and disengagings such as back sprocket wheel, chain, machine when art skating are so resistance of taxing is very little.If machine has fault, adjust disconnector small grooved wheel and preceding sprocket wheel are thrown off, just can recover conventional bicycle function.This step change boosted vehicle has been concentrated the advantage of numerous boosted vehicles and variable speed bicycle, has remarkable energy saving effect, and is simple in structure, and the mechanical efficiency height can be installed on the common bicycle, so commonality is good, cost is low.Machine adopts horizontal being installed in below the axis, so good concealment, center of gravity is low.

Following structure embodiment and accompanying drawing are done further explanation to utility model.

Fig. 1 is single rotation structure of the utility model step change boosted vehicle, the structural representation of a driver train and a clutch control mechanism part.(A) figure is a front view among Fig. 1, and (B) figure is the birds-eye view of (A).Fig. 2 is the structural representation of another part of clutch control mechanism.Fig. 3 installs a minor sprocket additional on the machine output shaft, and minor sprocket drives the structural representation of the middle sprocket that fixes with preceding sprocket wheel by chain.

By part vehicle frame 1, preceding sprocket wheel 3, axis 6, turn leg 7, single device 8 that changes is formed single rotation mechanism.Formed driver train by machine 9, small grooved wheel 10, disconnector 11, vehicle frame 1, vehicle frame 1, hinge wheel 3, chain 2, back sprocket wheel 4, change-speed box 5.Formed clutch control mechanism by the horizontal rod 16 of rim brake, the horizontal rod small embossment 17 of rim brake, handlebar 15, brake handle 18, brake handle small embossment 19, backguy cover 21, steel rope 20, clutch control handle 22.

When needing power-assisted, adjust earlier disconnector 11, make the machine reach, make small grooved wheel and 3 engagements of preceding sprocket wheel, release handle 18 makes the machine power-transfer clutch that closes, and sprocket wheel 3 drove small grooved wheels 10 and rotates before pedal crank leg 7 made, thus the drive machine turns.Sprocket wheel 3 before small grooved wheel 10 drives behind the machine startup, preceding sprocket wheel 3 drives back sprocket wheel 4 by chain, rotates thereby change-speed box 5 rotations drive rear wheel 23, and car is advanced.Also can on the machine output shaft, install a sprocket wheel 14 additional, drive middle sprocket 12 by gimmal 13 and rotate, owing to middle sprocket 12 and preceding sprocket wheel 3 fix, so sprocket wheel 3, back sprocket wheel 4, change-speed box 5, rear wheel 23 rotate together before driving.When needs braked, first control handle 18 rotated along level is inboard, the steel rope 20 in the pulling clutch cable, make 22 actions of clutch control handle, make separately upwards rotation of control handle 18 again of power-transfer clutch, just can realize brake, cooperate another brake handle to move together simultaneously.Unclamping two handle cars can advance again.When needing speed change, its method of operation is identical with conventional variable speed bicycle.When needing art skating, reduce throttle or closing machine 9, rear wheel 23 breaks away from back sprocket wheel 4, chain 2, preceding sprocket wheel 3, small grooved wheel 10, machine 9, and the same frictional resistance with bicycle is very little.

If machine 9 is bad, in the time of need riding, adjust disconnector 11, move after making machine 9, small grooved wheel 10 and preceding sprocket wheel 3 are thrown off, can realize conventional bicycle function.

This step-speed-variable power-asisted collects the advantage of numerous kind vehicle using motors and multi-speed bicycle in a car, can realize step speed change, makes machine keep desirable operating mode and oil consumption rate. This car adopts the chain transmission, so the transmission efficiency height. This handlebar machine is installed on the common multi-speed bicycle, needs the part of processing seldom, so versatility is good, simple in structure, cost is low. Brake lever and clutch handle share, and be simple in structure, easy to use. Machine adopts horizontal and is positioned on below the axis, so good concealment, center of gravity is low, and stability is good.

Claims (3)

1, a kind of machine is installed on the rim brake variable speed bicycle, preceding sprocket wheel is fixed on single the commentaries on classics on the device, single device that changes is fixed on the axis, turn leg and be fixed on single rotation mechanism on the axis, with a small grooved wheel and preceding sprocket engagement are installed on the machine output shaft, preceding sprocket wheel can pass through chain, back sprocket wheel, change-speed box drives the driver train that rear wheel rotates, the control mechanism that links to each other with the machine power-transfer clutch with steel rope, the step change boosted vehicle that is constituted, it is characterized in that said machine is by being fixed on the small grooved wheel on the machine output shaft, when sprocket wheel rotates forward before driving, turning leg does not change, turn leg and rotate preceding sprocket wheel forward with changeing, preceding sprocket wheel passes through chain, back sprocket wheel, change-speed box drives rear wheel and rotates.

2, according to the described step change boosted vehicle of claim 1, it is characterized in that said machine clutch handle and a rim brake handle are shared, cut in two the brake handle continuous near the position of holding with an articulated mounting, a small embossment respectively welds to outer horizontal vertical direction in the place at the intercepted two-end-point of handle, steel rope and the overcoat of fixing clutch cable respectively in a hole respectively bored in the outer end of small embossment, when thereby handle small embossment outer end spacing when level is inwardly rotated strengthens steel rope control clutch in the pulling backguy, handle upwards rotates i.e. brake.

3, according to the described step change boosted vehicle of claim 1, it is characterized in that fixing on the said machine output shaft minor sprocket, minor sprocket drives another middle sprocket that is fixed on the preceding sprocket wheel by chain and rotates with preceding sprocket wheel.

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