CN2686983Y

CN2686983Y - Manual pedal stepless speed-changing bicycle

Info

Publication number: CN2686983Y
Application number: CN 200420038281
Authority: CN
Inventors: 孙广先
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-02-09
Filing date: 2004-02-09
Publication date: 2005-03-23
Anticipated expiration: 2014-02-09

Abstract

The utility model discloses a manual pedal type stepless speed changing bicycle. A driving wheel formed by speed changing wheel discs whose conical surfaces are opposite are installed on the centre shaft of the two sides of the frame of the bicycle. Pedals are installed on the two sides of the driving wheel, V-belts are hung on the wheel edges of the two speed changing wheel discs, and a compression spring is installed between the two disc surfaces. A tappet which can move forward and backward and is operated by a gear lever is installed on the front sloping beam of the frame, and an inserter which can make the two speed changing wheel discs approach or separate is installed on the end of the tappet near the speed changing wheel discs. Attaching wheels are supported on the two sides of the rear wheel spoke on the rear shaft of the bicycle, V-belt grooves are arranged on the outer edge wheel surface of the attaching wheels, and ratchets driving the rear wheel to rotate in a single direction are arranged on the inner sides of the attaching wheels. A tensioner which can push and press the V-belt to tension is installed above the V-belt and on the rear sloping beam of the frame. Unitizing sprocket wheel and chain transmission are not needed in the travelling and speed change of the bicycle, so the utility model which has the advantages of low cost and light weight can realize stepless speed change with fast speed change and high speed ratio.

Description

Manpower pedal type stepless speed regulating bicycle

Technical field

The utility model belongs to the vehicle, specifically a kind of manpower pedal type stepless speed regulating bicycle.

Background technology

The variable speed bicycle of Chu Shouing in the market, all be sprocket wheel and chain gear, side at bicycle is equipped with the number of teeth one group of sprocket wheel that more or less, stir the variation that chain changes the size generation speed ratio of chain institute chaining wheel by gear change hand lever, make bicycle change the speed of advancing, adapt to needs as different road conditions such as uphill/downhill.But the shortcoming of sprocket wheel chain transmission gear shift is: the position of stirring chain by gear change hand lever often once can not put in place, particularly make time worn bicycle, be prone to the engagement bad, the speed change poor reliability, ride sound after the speed change, problem such as require great effort, have some setbacks; Moreover, because the needs of speed change add the cover cap inconvenience on chain wheel set, clamp and stain the trousers angle easily on the one hand, on the other hand, there is greasy dirt easily to adhere to sand on sprocket wheel and the chain, also the wearing and tearing of acceleration chain wheel and chain.

The utility model content

Problem such as speed change poor reliability when changing for solving sprocket wheel size that chain hangs, the technical solution of the utility model is: on the axis of cycle frame two sides, with the bearing supporting driving wheel that tapering equates and relative paired speed change wheel disc is formed is installed, hang with cone belt on the conical surface between two speed change wheel discs, the compression spring that can support card is installed between relative card; On the preceding cant beam of vehicle frame, be equipped with by shifter bar and handle the tappet that can move forward and backward, the nearly speed change wheel disc end of tappet is equipped with and can makes the plug-in unit that two speed change wheel discs are close or separate between vehicle frame and speed change wheel disc; In the trailing wheel spoke two sides that are bearing in bearing on the bicycle rear axle, be supported with axis on the cooresponding wheel of two speed change wheel discs, the outer wheel face of wheel is provided with the cone belt groove that adapts with cone belt, the inboard of wheel is provided with the ratchet that can insert in the trailing wheel spoke upper groove, drive the trailing wheel unidirectional rotation, and cone belt connects speed change wheel disc and wheel; The upper fixed of cone belt has support on cant beam behind the vehicle frame, and the slack-free tension wheel of available compression springs urges cone belt is installed on support; Two pedals that can drive bicycle walking are installed in the both sides of vehicle frame.

The utility model also has following key character:

Two pedals are 180 and spend on the outer of the speed change wheel disc outside facade that is installed in the vehicle frame both sides respectively.

The push-and-pull shifter bar, drive is connected in the plug-in unit extruding of tappet end or loosens speed change wheel disc near vehicle frame and changes distance between the two relative change wheel dishes, thereby the position of extension cone belt thereon on the conical surface of speed change wheel disc Internal and external cycle changed freely, that is changed the size of the driving wheel of bicycle, driving wheel drives wheel by cone belt, wheel drives trailing wheel by ratchet again, and the back driving wheel size of bicycle is constant, add the auto-tensioning effect that is installed in the tension wheel of band compression spring on the cant beam of back, make cone belt be in slack-free power delivery status all the time, infinitely change the size of driving wheel, just infinitely change the transmission speed ratio of bicycle, also just changed the speed of the speed of a motor vehicle.When the people promoted bicycle and do not ride, because trailing wheel rotates with ground friction, the ratchet of the wheel inboard of installation V-belt was inoperative to trailing wheel, and does not rotate the V-belt; When the people scrunched pedal by bike, the V-belt drives wheel changeed, and the ratchet of wheel inboard drives trailing wheel and rotates, and bicycle just can be walked.

Above-mentioned bicycle is owing to adopt speed change wheel disc and cone belt stepless variable drive, do not have sprocket wheel, chain and stir the handle of chain, problems the such as also size that changes chain institute chaining wheel is once not in place, engagement is bad with regard to not existing, ride sound after the speed change poor reliability, speed change, effort has some setbacks, there is not sprocket wheel to alleviate the weight of car load, there is not greasy dirt to adhere to the wearing and tearing sprocket wheel of sand and the problem at chain and contamination trousers angle yet, hold to postpone before the shifter bar and draw speed change easily, rate conversion is fast, and speed ratio is big.Through measuring and calculating, can be the same when speed is slow by bike with existing bicycle, the fastest reaching more than the twice that has bicycle now.In addition, pedal is directly installed on the speed change wheel disc outside, has reduced drive disk assembly, reduced cost and complete vehicle weight, make two pin direct drive wheel turns, because of the friction of the intermediate link that reduced transmission laborsaving.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 looks partial schematic diagram for master of the present utility model;

Fig. 2 is the B-B generalized section of Fig. 1;

Fig. 3 is the A-A generalized section of Fig. 1;

Fig. 4 is the C-C partial cutaway schematic of Fig. 3;

Fig. 5 is that the D of Fig. 2 is to view.

The specific embodiment

Among Fig. 1, on the axis 13 of cycle frame two sides, the driving wheel of paired speed change wheel disc 12 compositions of band tapering is installed with the bearing supporting, its tapering is identical and the conical surface is relative, the foreign steamer that a pair of speed change wheel disc is 12 is along hanging with cone belt 2, on the wheel face between a pair of speed change wheel disc 12, the compression spring 18 (referring to Fig. 2) that can support card is installed; On the preceding cant beam 10 of vehicle frame, the tappet 11 that can be moved forward and backward by shifter bar 8 manipulations is installed along preceding cant beam 10, on the support 9 before shifter bar 8 usefulness bearing pins 24 are through and are fixed on the cant beam 10, in order to make shifter bar 8 angles change convenient location, back, on the bearing pin 24 between support 9 and the shifter bar 8, be with compression spring 16 (referring to Fig. 5); The lower end of shifter bar 8 is connected with an end of tappet 11 by pin 17, and for the not deflection that moves of tappet 11, the both sides of tappet 11 are fixed with deflector apron 23 on preceding cant beam 10; The plug-in unit of installing at an end of the nearly speed change wheel disc 12 of tappet 11 can be the tip bullet of fixing 20 forward, is inserted in vehicle frame and near between the bearing of speed change wheel disc 12, also can is to finish other forms of regulating speed change wheel disc 12 distances; On the outer side elevation outer of the speed change wheel disc 12 of vehicle frame both sides, two relative up and down pedals 21 are installed.

Among Fig. 3, in trailing wheel spoke 25 both sides that are bearing in bearing on the bicycle rear axle 15, also be supported with the cooresponding wheel of forming with two speed change wheel discs 12 14 of driving wheel, the outer wheel face of wheel 14 is provided with the cone belt groove that adapts with cone belt 2, the inboard of wheel 14 is provided with can insert on the trailing wheel spoke 25, can drive the ratchet 29 (referring to Fig. 4) that trailing wheel 1 makes its unidirectional rotation, ratchet 29 usefulness pins 31 are rotatably supported in the groove of wheel 14 sides, the tooth top of ratchet 29 is inserted in the groove of trailing wheel spoke 25 sides, on the wheel 14 and between the inner toothed surface of ratchet 29,, top ratchet 29 makes its outer compression spring of opening 30 but being installed.When the people is pushing away garage when walking, trailing wheel 1 rotates with ground friction, and ratchet 29 is pressed on the spring 30 and is not propped up, and ratchet 29 only can slide by crossheading; When the people is riding car when walking, cone belt 2 drives wheels 14 and rotates, and ratchet 29 withstands on bottom portion of groove and drives trailing wheel 1 and drive bicycle walking under the support of spring 30; Above cone belt 2 on the cant beam behind the vehicle frame 4, be fixed with upper bracket 3 and lower bracket 7, between last

lower bracket

3,7, guide rod is installed, be with compression spring 5 on the guide rod, guide rod links to each other with tension wheel 6 by the guide pin bushing on the lower bracket 7, under the effect of compression spring 5, tension wheel 6 is pressed on the end face of cone belt 2, makes cone belt 2 in tension all the time.

The people is by bike the time, on the pedal 21 in two pedal change wheel dishes, 12 outsides, under the drive of cone belt 2, walk, the shifter bar of installing on the cant beam 10 before the push-and-pull 8 is around bearing pin 24 swings, making shifter bar 8 drive tappet 11 moves forward and backward, driving the bullet 20 be inserted in 12 on vehicle frame and speed change wheel disc simultaneously moves forward and backward, make cone belt 2 on the wheel face of the driving wheel that speed change wheel disc 12 is formed, can change size arbitrarily in its tapering setting range, cone belt 2 also is in slack-free power transmission state all the time under the effect of tension wheel 6.Under flower wheel unmodified situation, the change of driving wheel size, the speed of advance that makes bicycle just can reach infinite variable speed purpose freely in its adjustable scope.

Claims

1, a kind of manpower pedal type stepless speed regulating bicycle, comprise vehicle frame, front and back wheel, front and back cant beam and pedal etc., it is characterized in that: on the axis of cycle frame two sides, with the bearing supporting driving wheel that tapering equates and relative paired speed change wheel disc is formed is installed, hang with cone belt on the conical surface between two speed change wheel discs, the compression spring that can support card is installed between relative card; On the preceding cant beam of vehicle frame, be equipped with by shifter bar and handle the tappet that can move forward and backward, the nearly speed change wheel disc end of tappet is equipped with and can makes the plug-in unit that two speed change wheel discs are close or separate between vehicle frame and speed change wheel disc; In the trailing wheel spoke two sides that are bearing in bearing on the bicycle rear axle, be supported with axis on the cooresponding wheel of two speed change wheel discs, the outer wheel face of wheel is provided with the cone belt groove that adapts with cone belt, the inboard of wheel is provided with the ratchet that can insert in the trailing wheel spoke upper groove, drive the trailing wheel unidirectional rotation, and cone belt connects speed change wheel disc and wheel; The upper fixed of cone belt has support on cant beam behind the vehicle frame, and the slack-free tension wheel of available compression springs urges cone belt is installed on support; Two pedals that can drive bicycle walking are installed in the both sides of vehicle frame.

2, manpower pedal type stepless speed regulating bicycle as claimed in claim 1, it is characterized in that: the described plug-in unit that is installed in the tappet end is a bullet of fixing its termination.

3, manpower pedal type stepless speed regulating bicycle as claimed in claim 1 or 2 is characterized in that: two pedals are 180 and spend on the outer that is installed in the speed change wheel disc outside, vehicle frame both sides facade respectively.