CN2042447U

CN2042447U - Lever-type bicycle

Info

Publication number: CN2042447U
Application number: CN88209748U
Authority: CN
Inventors: 王天臻
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-08-23
Filing date: 1988-08-23
Publication date: 1989-08-09

Abstract

The utility model discloses a lever-type bicycle, whose rear wheel is driven by the rotation of a ratchet wheel which is driven by ratchets on the lever-type pedal, with discarding the transmission device of the existing bicycle. The utility model has the advantages of simple structure, firm and durable structure and high efficiency. The biggest advantages are that the labour is saved visibly and the parts are simple.

Description

Lever-type bicycle

The utility model belongs to technical field of bicycles, relates to a kind of lever bicycle driven.

Existing bicycle type of drive, the actuating device of being made up of parts such as foot-operated, axis, sprocket wheel, chain, flywheel and hind axles is finished.Because the crank size of stretcher is short, makes people when scrunching, the drive torque that acts on the sprocket wheel is less, and the service area of its arm of force is also little.Therefore, the driving efficiency of existing bicycle is low, the effort of riding; And the number of packages amount is more in addition, the structure more complicated.

The purpose of this utility model provides a kind of bicycle with level drive that uses lever principle to drive, and it can solve the above-mentioned deficiency of existing bicycle, particularly solves the shortcoming of labor-saving effect difference.

The utility model is abandoned the parts such as axis, sprocket wheel, chain and flywheel of existing bicycle fully, thereby but rotates with the foot-operated driving pawl of lever and to drive that bicycle rear advances.This is a kind of new-type effort-saving bicycle.

The utility model includes parts such as vehicle frame, front fork, handlebar, front axle, rear axle, front-wheel, trailing wheel, saddle, front fender, back mud plate, front brake and back brake, be characterized in a driving pawl that is fixed on the wheel shaft respectively being arranged in the outside of the left and right sides of bicycle rear floral disc, the crown of ratchet is towards the back of bicycle, by the foot-operated up-and-down movement of a pair of lever of the rear axle left and right sides, make foot-operated driving key (sour jujube tooth) the drive ratchet of installing of going up of lever rotate forward, form driving device of the present utility model.The follower head of lever is to be installed on the hind axle by ball bearing of main shaft or slip copper sheathing.The inner ring of bearing or copper sheathing is fixed on the hind axle, and fastening with nut, make it to be close to left and right sides rear axle bumper, two foot-operated levers are installed in the bicycle rack both sides side by side, fix by the outer ring of thicker iron sheet with bearing or copper sheathing, the front end of lever respectively is equipped with stretcher.Pulley and the slip rope that can control the foot-operated lifting of two levers also are installed on the crossbeam of bicycle rack.It is foot-operated to scrunch lever by the bicyclist, and lever is as the arm of force, makes driving key (sour jujube tooth) on it drive ratchet and rotates forward, because the arm of force length of stretcher is much larger than the arm of force length that drives key, therefore, the laborsaving effect of the utility model is especially obvious.

Maximum strong point of the present utility model is laborsaving.Because the driving arm of force of bicycle with level drive is 4～6 times of resistance arm, calculate according to lever principle, the utility model can be laborsaving 4～6 times than existing bicycle, like this, if existing vehicle-mounted voluntarily 300 jin weight need be with 150 jin power, the utility model carries same weight, just as long as 25～37 jin power is just passable.If strengthen the structural strength of bicycle, uses 150 jin propulsive effort, just energy load-carrying more than 1200 jin of the utility model.

The utility model is except the big advantage of laborsaving and load carrying ability, and because of having save mechanisms such as chain, sprocket wheel, flywheel, the big advantage of service area that also have the driving efficiency height, scrunches is beneficial to high speed and rides and go up a slope, rides when bearing a heavy burden.In addition, simple in structure, the handling ease, sturdy and durable of part is convenient to produce and safeguard and use in addition.

Structure of the present utility model is drawn by the following drawings:

Fig. 1 is a scheme drawing of the present utility model.

Fig. 2 is a ratchet and the mounting structure figure that drives key in the utility model.

Fig. 3 is the foot-operated overall diagram of lever.

Fig. 4 is that lever is ridden the mounting structure figure on hind axle.

Fig. 5 is a saddle scheme drawing of the present utility model.

Specifically narrate below in conjunction with accompanying drawing:

Two levers foot-operated 1 and 2 are installed in the both sides of cycle frame among Fig. 1, and pulley 3 and the slip rope 4 that can control the foot-operated lifting of two levers are installed on the crossbeam of vehicle frame.Pulley can be used plastic production, and slip rope can be made of nylon rope.The foot-operated back vent that runs into bicycle down when pedaling just stops to descend, and by foot-operated alternately ceaselessly the rising and descend of two levers, drives bicycle and ceaselessly marches forward.

Respectively there is a driving pawl 6 that is fixed on the wheel shaft in the outside that the left and right sides floral disc 5 of spoke is installed on bicycle rear shaft 8 among Fig. 2, and the teeth of ratchet 6 have constant slope, and its crown is towards the back of bicycle.Ratchet 6 can be made of one with floral disc, also can process respectively.Respectively have a lever to ride 7 in the outside of ratchet 6, the foot-operated follower head of lever is installed in (referring to Fig. 3) on the hind axle by ball bearing of main shaft or sliding shaft sleeve, and its front end has pedals the stretcher 14 of riding.The driving key member that a L type is respectively arranged at the foot-operated rear portion of lever.It is by two screws 13 L type key frame 9 to be fixed on the lever foot-operated 7, in the groove of key frame 7, be installed with key axle 10, the sour jujube tooth (key) 11 that driving pawl rotates just is fastened on the key axle 10, and makes the sour jujube tooth can adhere to ratchet 6 more tightly by steady key spring 12, promotes ratchet one-way and rotates.

Fig. 4 shows that lever foot-operated 7 can be installed on the hind axle by ball bearing of main shaft or slip copper sheathing.The inner ring 15 of bearing or copper sheathing is fixed on the hind axle 8, and it is fastening with nut, make it to be adjacent to left and right sides rear axle bumper, and outer ring 16 width of bearing or copper sheathing are slightly narrower than inner ring, with thicker iron sheet 17 outer ring 16 of bearing or copper sheathing ridden with lever again and be tightened to one by nut 18.Iron sheet should encase the outer ring of bearing or copper sheathing over half.

Because the one-way of ratchet drive, when lever is foot-operated when driving the sour jujube tooth and rising, ratchet and sour jujube tooth have only slide relative, and ride when rising to certain altitude and will descend when lever, and the sour jujube tooth just promotes the ratchet rotation, thereby the hind axle that is fixed as one is rotated.When two levers are ridden under the balance of pulley and slip rope, alternately rise, descend, just can drive bicycle and constantly advance.

The saddle of bicycle with level drive can be formed with parts such as the sponge 20 of Fig. 5, sponge iron holder 21, seat axle 22, big nut 23, spring 24, lifting bars 25, on vehicle frame, be drilled with three of lifting bar hole 26 upper, middle and lowers, be inserted in the height that diverse location in the hole 26 is adjusted saddle by adjusting vehicle seat lifting bar 25.Each adjust lifting after, all should tighten big nut 23, slow down the top ripple by spring 24, sponge seat cushion make ride comfortable.

Claims

1, a kind of bicycle with level drive includes parts such as vehicle frame, front fork, handlebar, front axle, rear axle, front-wheel, trailing wheel, saddle, front fender, back mud plate, front brake and back brake, it is characterized in that:

(1) in the outside of the left and right sides of bicycle rear floral disc a driving pawl that is fixed on the wheel shaft is arranged respectively; The crown of ratchet is towards the back of bicycle;

(2) wheel shaft at bicycle rear each side has a lever foot-operated, and it is strong that the driving of being made up of key frame, key axle, sour jujube tooth (key), steady key spring etc. is installed on two levers are foot-operated;

(3) lever is foot-operated is to be installed on the hind axle by ball bearing or slip copper sheathing, the inner ring of bearing or copper sheathing is fixed on the hind axle, and fastening with nut, make it to be adjacent to left and right sides rear axle bumper, lever is foot-operated then to be fixedly linked by the outer ring of thicker iron sheet with bearing or copper sheathing;

(4) pulley and the slip rope that can control the foot-operated lifting of two levers is installed on the crossbeam of cycle frame.

2, bicycle according to claim 1 is characterized in that saddle is made up of the lifting bar hole on sponge, sponge iron holder, seat axle, spring, big nut, lifting bar and the vehicle frame etc.