CN2220422Y

CN2220422Y - Gearing of pedal tricycle

Info

Publication number: CN2220422Y
Application number: CN95209134U
Authority: CN
Inventors: 尤久钢
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-21
Filing date: 1995-04-21
Publication date: 1996-02-21
Anticipated expiration: 2005-04-21

Abstract

The utility model discloses a gearing for pedal tricycles. A pedal lever structure is adopted, wherein, one end of each of the two pedal levers is connected to a fulcrum shaft by a force and speed regulating telescopic rod respectively. The purpose of force and speed regulation can be realized conveniently by changing the distance between the fulcrum and power wheels. The two power wheels are arranged on both sides of a driving wheel and are connected to a framework by a through shaft. An exceeding clutch device is arranged between two end surfaces of the power wheels and the driving wheel. The driving wheel can be driven to rotate in one direction to drive the tricycle to go forward through the power wheels and a transposition wheel by a leather belt which is connected to the pedal levers. The gearing for pedal tricycles which has the advantages of simple structure and low cost is a really ideal gearing for pedal tricycles.

Description

The trishaw driving device

The utility model relates to a kind of by the foot-operated driving device that drives wheeled car of rider.Particularly a kind of trishaw driving device.

At present, sell on the market or the transmission device of the foot-operated driving three-wheel vehicle that uses, mostly be chain drive greatly, it mainly by bonded assembly bipod on chain drum, the chain drum axis turn, flywheel and chain on the rear vehicle shaft constitute.Turn by 360 ° of foot-operated rotation pin, drive the flywheel powered vehicle by chain drum by chain and advance.In 360 ° of rotations, have only 90 ° to belong to firmly state, other state manpower can not get effective utilization, pin only is along with pin turns rotation, because pin turns center shaft and rear shaft center's distance is excessive, also cause the chain phenomenon easily, and this three-wheel vehicle does not have speed change and augmenter, it is CN2124864U that the utility model patent communique once disclosed a kind of notification number, name is called the patent application of " the novel lever infinite speed variation transmission device that is used for bicycle ", it is to change existing trishaw bottom bottom girder into the rectangular frame bottom girder, one group of lever stepless speed changing mechanism is respectively adorned in both sides below the bottom girder, every group by pedal lever and with the pendulum lever form, and pedal lever by slide bushing assembly with act on mutually with the pendulum lever, drive the conical gear group by overriding clutch and rotate by the conical gear group drive rear wheels on transmission shaft and the rear wheel axis.Slide on the pedal lever and can slide to the optional position, and self-align, by the change lever with the moment of putting lever, realize the purpose of speed governing, though this structure manpower is utilized effectively and has increased accent power regulating mechanism, its structure is still comparatively complicated, and the higher also inconvenience of cost maintenance.

The purpose of this utility model is to provide a kind of trishaw driving device, and it is not only simple in structure, cost is low, and comparatively laborsaving in the process of moving and can carry out accent power and infinite speed variation easily.

Its concrete solution is: adopt pedal lever mechanism in the driving device, one end of two foot-operated levers transfers power speed governing expansion link to be connected on the moving fulcrum through one respectively, these end two foot-operated levers transfer power speed governing expansion link to connect together with two respectively, be provided with spring in it, the moving fulcrum axle is provided with fulcrum and adjusts wire drawing, can adjust lever ratio by it, pedal lever transposition wheel is arranged on the framework, two power wheels are positioned at the both sides of driving wheel, and be connected on the framework by an axis, be provided with overrunning clutch between power wheel and the driving wheel both ends of the surface, two power wheels, pedal lever transposition wheel is connected as a single entity by belt, the two ends of belt are fixedly connected on the pedal lever respectively, and this point of connection is apart from the power of accent speed governing pivot distance 2.7～5 times apart from the distance of foot position.

On two foot-operated levers one, when once moving, driving power wheel by belt rotates, by overrunning clutch driving wheel is rotated to a direction, driving wheel can be connected with follower (rear driving wheel) by belt, thereby can drive the rear driving wheel rotation car is advanced.

The utility model is simple and reasonable for structure, be convenient to maintenance, productive costs is lower, because power wheel and rear shaft center are apart from shorter, so increased the degree of stability of this car, adjust lever ratio by the distance that changes fulcrum and power wheel, both can realize transferring the purpose of power speed governing easily, it both can make three-wheel vehicle speedup under light condition subtract the Lixing and sail, can under heavy condition, make the operation of three-wheel vehicle deceleration force amplifier again, this device not only can be used as the driving device of three-wheel vehicle, also uses applicable to two-wheeled cycle or other occasion that need ride transmission.

In conjunction with the accompanying drawings the utility model is described in detail below by embodiment:

Fig. 1 is the utility model structural representation front view.

Fig. 2 is the utility model structural representation birds-eye view.

Fig. 3 is the structural representation of the utility model driving wheel.

Fig. 4 is the structural representation of the utility model power wheel.

Fig. 5 is the A-A cutaway view of the utility model overrunning clutch and driving wheel connecting portion.

In the present embodiment, power wheel (13), (16) are positioned at the both sides of driving wheel (17), and be connected on the framework (6) by an axis, all be inlaid with two overrunning clutch (19) in each hole of driving wheel (17), each overrunning clutch all contacts with the end face of power wheel, and driving wheel (17) can be connected with the follower (8) on the rear drive shaft (9) of three-wheel vehicle by driving band (3).One end of two foot-operated levers (14), (15) is respectively with transferring power speed governing expansion link (5), (11) to be sleeved on, be provided with spring (4) in it, transfer the other end of power speed governing expansion link (11), (5) to be connected on the moving fulcrum axle (18) by moving fulcrum (12), (20) respectively, moving fulcrum axle (18) two ends are connected on the framework (6) by moving fulcrum.One end of belt (1) is connected on foot position 80cm place and the corresponding pedal lever of power wheel (14), belt (1) by with the corresponding power wheel of this pedal lever (16), be bearing in the pedal lever transposition wheel (7) on the framework (6), and also be connected on foot position 80cm place and corresponding another pedal lever of power wheel (15) with the other end of the corresponding power wheel of another pedal lever (15) (13) with belt (1).

When pedal lever (15) moves downward, during pedal lever (15) upward movement, driving wheel (17) and power wheel (13) rotate together, when pedal lever (15) upward movement, because the effect of overrunning clutch, power wheel (13) opposite spin, and driving wheel (17) still rotates by former direction under the drive of another power wheel (16), driving wheel will drive follower driving trailing wheel (10) by belt (3) advances three-wheel vehicle.Be connected with a wire drawing (2) on the accent power speed governing fulcrum shaft, can change lever ratio by it, when shorten fulcrum and power wheel apart from the time, can play the deceleration force amplifier effect, the distance of prolongation fulcrum and power wheel can play speedup and subtract power.

Claims

1, a kind of trishaw driving device, adopt pedal lever mechanism, it is characterized in that two foot-operated levers (15), (14) a end is transferred power speed governing expansion link (11) through one respectively, (5) be connected moving fulcrum (12), (20) on, moving fulcrum axle (18) is provided with a fulcrum and adjusts wire drawing (2), pedal lever transposition wheel (7) is arranged on the framework, power wheel (13), (16) be positioned at the both sides of driving wheel (17) and be connected on the framework by an axis, power wheel (13), (16) and be provided with overrunning clutch (19) between the driving wheel both ends of the surface, two power wheels (13), (16), pedal lever transposition wheel (7) is connected as a single entity by belt (1), and the two ends of belt (1) are connected to pedal lever (14), (15) on.

2, trishaw driving device according to claim 1 is characterized in that pedal lever (14), (15) connect together with transferring power speed governing expansion link (5), (11) respectively, are provided with spring (4) in it.

3, trishaw driving device according to claim 1 is characterized in that belt (1) and pedal lever point of connection are 2.7～5 times that distance is transferred power speed governing pivot distance apart from the distance of foot position.