CN2320507Y

CN2320507Y - Labour-saving bicycle

Info

Publication number: CN2320507Y
Application number: CN 98202013
Authority: CN
Inventors: 郑瑞滨
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-04
Filing date: 1998-03-04
Publication date: 1999-05-26
Anticipated expiration: 2008-03-04

Abstract

The utility model relates to a labor-saving bicycle. The tilt angle of the front oblique beam of the bicycle frame of the bicycle is enlarged, and thus a central axis is moved backwards; a connecting tube is arranged and connected between the back oblique beam of the utility model and the flat fork of the bicycle frame; particularly, the utility model is provided with a pedal labor-saving device which comprises a flywheel, a chain, the central axis, a wheel disc, two eccentric orbit discs, two crank arms and pedals, wherein, the two eccentric orbit discs and the two crank arms are respectively arranged at both sides of the bicycle frame; the crank arms which are force arms are extended when feet are convent to use force in the process of riding, and thus wheels can be driven with labor saving. The utility model has the advantages of reasonable and simple structural design, reliable operation, practicality and low manufacture cost.

Description

Joint power bicycle

The utility model relates to bicycle and tricycle kind manpower bicycle, specifically a kind of joint power bicycle.

Bicycle is a kind of vehicle of widespread use as manpower foot-driven vehicle.Yet, existing bicycle since its connecting lever (being crank) length fix, ride in the foot-operated arm of force constant, make the effort of riding, particularly, concerning the bicyclist, more expend muscle power against the wind or during upward slope.

The purpose of this utility model is the said structure defective that exists at manpower bicycles such as existing bicycle, three-wheel vehicles, provides a kind of by changing the joint power bicycle that the foot-operated arm of force reaches laborsaving purpose in riding, and is public's service.

Task of the present utility model realizes by following technical proposals: this joint power bicycle includes vehicle frame, foot-operated power-saving device, wheel, the inclination angle of the more common car of preceding cant beam of its vehicle frame is strengthened and is moved 50-90mm after making the five-way of suit axis, attaching has adapting pipe between back cant beam and vehicle frame chain stay, foot-operated power-saving device includes flywheel, chain, axis and wheel disc, and two eccentric orbit dishes of the vehicle frame both sides that are placed in, two connecting levers and pedal, the structure of said eccentric orbit dish be one be provided with attaching lug and eccentric pivot hole and circular and have local in the disk body of eccentric orbit of convex arc, said connecting lever system is by the arm cover and contain the end of holding that is provided with and put the travelling arm of roller and constituted.

Two terminations of said axis are flat column, and said arm cover offers the axis perforation and mates suit with the axis termination.

Said arm overlaps on its built-in slideway and is equiped with roller.

In riding, travelling arm is put roller with the end of end installing and is rolled in the flute profile eccentric orbit, causes travelling arm to change the foot-operated arm of force and its pedal is still made circular movement just as the running orbit of common car along the flexible slippage of the built-in slideway in the arm cover.

Advantage of the present utility model:

The preceding cant beam inclination angle of the vehicle frame of this car is strengthened and is moved after making the five-way of suit axis, make the pedal running orbit identical with common car, ride comfortable; Add adapting pipe on the vehicle frame, make car beam connection angle change and the support body load bearing stength is constant; Axis eccentric part on the eccentric orbit dish of foot-operated power-saving device, when making circular movement with foot-operated moving pedal, the end of travelling arm one end is put the restriction that roller is subjected to eccentric orbit, the length that the relative arm cover of travelling arm is stretched out changes, and when making pedal be positioned at the front upper place, promptly the length of stretching out when pin is exerted oneself most convenient is maximum, the relative like this arm of force length that prolonged, thereby reached the labour-saving effect; The axis two ends is flat column and the axis perforation coupling suit that puts with arm, fixation; Arm overlaps on the built-in slideway and is equiped with roller, makes the flexible friction of rolling that is of travelling arm; Multicompartment cooperation is rationally ridden the utility model, and the labor-saving effect is remarkable, simple in structure, reliable operation.

Description of drawings of the present utility model:

Fig. 1 is a kind of bicycle integral structure scheme drawing of the utility model;

Fig. 2 is foot-operated power-saving device local structure scheme drawing;

Fig. 3 is the schematic top plan view of Fig. 2;

Fig. 4 is the structural representation of connecting lever.

Among the figure: preceding cant beam 1, back cant beam 2, travelling arm 3, eccentric orbit dish 4, arm cover 5, axis 6, end are put roller 7, vehicle frame chain stay 8, adapting pipe 9, wheel disc 10, attaching lug 11, flute profile eccentric orbit 12, five-way 13, built-in slideway 14, roller 15, axis perforation 16.

The utility model will be described further in conjunction with the accompanying drawings and by implementing side:

A kind of joint force bike of this its typical case of joint power bicycle as shown in Figure 1, comprises that assembly such as vehicle frame, foot-operated power-saving device, wheel form.The inclination angle of cant beam 1 is strengthened than ordinary bicycle before the vehicle frame of this car, makes the five-way 13 of suit axis 6 move 50-90mm backward along vehicle frame chain stay 8; Attaching has an adapting pipe 9 between 8 liang of pipes of back cant beam 2 and vehicle frame chain stay, is strengthened the vehicle frame load bearing stength.Foot-operated power-saving device includes assemblies such as flywheel, chain, axis 6 and wheel disc 10, and two eccentric orbit dishes 4 of the vehicle frame both sides that are placed in, two connecting levers and pedals, constitute pedal drive mechanism, the structure of eccentric orbit dish 4 and with the attaching of vehicle frame relation shown in accompanying

drawing

2 and 3, it is to join one by one with preceding cant beam 1, back cant beam 2 and vehicle frame chain stay 8 respectively and be fixed on the vehicle frame with three attaching lugs 11; Its disk body be provided with one with respect to axis 6 by a circle and have local in the groove road that constitutes of the closed curve of convex arc, promptly the flute profile eccentric orbit 12, and one is positioned at the axis hole that eccentric part passes for axis 6.The lengthening axis 6 that in the five-way 13 of vehicle frame, places, its stage casing is cylindric and attaching has wheel disc 10, and two terminations are flat column, be plugged on the arm cover 5 of side outside eccentric orbit dish 4 respectively among in the axle perforation 16, and locked by pin.Connecting lever system is by arm cover 5 and contain the end of holding that is provided with and put the travelling arm 3 of roller 15 and constitute.Connecting lever as shown in Figure 4, arm cover 5 is affixed being integral with the termination of square axis perforation 16 coupling suit axis 6, the two ends of the built-in slideway 14 of its body are equiped with 4 pieces of rollers 15 of two pairs of meters respectively, and travelling arm 3 sliding resistances that culvert is held in the built-in slideway 14 reduce.This travelling arm is an elongate body, and the one end is installed pedal, and the other end is installed an end by bearing pin and put roller 7.When scrunching pedal, the bicyclist does circumference when rotation, the end of end is put roller 7 and is promptly done the profiling rolling along the cell wall of flute profile eccentric orbit 12 in addition, cause when pin is exerted oneself most convenient connecting lever to prolong, the lengthening arm of force can save power area runner disc 10 and drive flywheel by chain and turn a wheel and move ahead.

Claims

1, a kind of joint power bicycle, include vehicle frame, foot-operated power-saving device, wheel, it is characterized in that: the inclination angle of the more common car of preceding cant beam of vehicle frame is strengthened and is moved 50-90mm after making the five-way of suit axis, attaching has adapting pipe between back cant beam and vehicle frame chain stay, foot-operated power-saving device includes flywheel, chain, axis and wheel disc, and two eccentric orbit dishes of the vehicle frame both sides that are placed in, two connecting levers and pedal, the structure of said eccentric orbit dish be one be provided with attaching lug and eccentric pivot hole and circular and have local in the disk body of eccentric orbit of convex arc, said connecting lever system is by the arm cover and contain the end of holding that is provided with and put the travelling arm of roller and constituted.

2, according to the described joint power bicycle of claim 1, it is characterized in that: two terminations of said axis are flat column, and said arm cover offers the axis perforation and mates suit with the axis termination.

3, according to the described joint power bicycle of claim 1, it is characterized in that: said arm overlaps on its built-in slideway and is equiped with roller.