CN201009981Y - Double-stage driving up and down pedal type bicycle - Google Patents

Abstract

The utility model relates to an double-stage driving bicycle by pedaling up and down, which is to solve such drawbacks in the prior art of longer body, larger occupation space, inconvenient moving and so on. The technic proposal mainly includes that the bicycle comprises a frame and a handle bar arranged on the frame, a front wheel and a rear wheel, a saddle, two master driving wheels, a middle propeller shaft, two middle driven wheels, a middle master driving chainwheel, a driven chainwheel, a chain, two pedals, two pedal stems, a driving isolator, a braking device. The utility model is characterized in that both the master driving wheels and the middle driven wheels are the gears, and the moving range of the two pedals is behind the vertical axle wire of the central axle.

Description

A kind of pedal-type bicycle up and down of two-stage transmission

Technical field

The utility model belongs to the manually driven vehicle, specifically is a kind of bicycle of override type up and down of two-stage transmission.

Background technology

Bicycle is the most frequently used manually driven vehicle of people, also can be used as to strengthen momental fitness equipment.The bicycle that generally uses all is the revolution pedal-type bicycle at present, and its structure is of long duration.Have in order to overcome existing revolution pedal-type bicycle that traveling comfort is poor, the problem of effort, poor stability, I have applied for a kind of pedal-type bicycle up and down of Chinese patent ZL200420071694.X number.For the compact inadequately problem of the spacing and return mechanism that has only one-level transmission, pedal that the pedal-type bicycle up and down that overcomes my application exists, I have applied for the pedal-type bicycle up and down of a kind of two-stage transmission of Chinese patent ZL200520060748.7 number.Pedal-type bicycle is pedaled form before all being about in the of these two kinds, its constructional feature is the place ahead that the moving region of two pedals all is in the vertical centering control axis of center axletree, promptly near a side of front-wheel, for the pin that makes the cyclist is unlikely to hinder turning to of front-wheel, vehicle body must design longlyer, long vehicle body need take than large space bicycle parking, and is also inconvenient when moving, and particularly goes up particularly evident downstairs.In addition, the pedal-type bicycle up and down of above-mentioned two-stage transmission, its two-stage transmission all is to adopt chain-driving, so vehicle body also must have long size.On the other hand, pursue the hope that the littler bicycle of volume has become many people.

Summary of the invention

Grow, take up room bigger in order to overcome the applicant at the existing vehicle body of pedal-type bicycle up and down of the two-stage transmission of first to file, move defectives such as inconvenience, the purpose of this utility model provides a kind of pedal-type bicycle up and down of improved two-stage transmission, can overcome the defective of prior art.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of pedal-type bicycle up and down of two-stage transmission, comprise vehicle frame and the handlebar that is mounted thereon, front and back wheel, seat, two main drive wheels, tween drive spindle, flower wheel in the middle of two, middle drive sprocket, driven sprocket, chain, two pedals, two pedal-rods, drive isolator, brake, wherein, front and back wheel difference normal-running fit is in the front and rear part of vehicle frame, seat is loaded on the top of vehicle frame, main drive wheel is installed on the center axletree of vehicle frame, the tween drive spindle normal-running fit is on vehicle frame, flower wheel and middle drive sprocket are installed on the tween drive spindle in the middle of two, driven sprocket is installed on the rear vehicle shaft by driving isolator, main drive wheel drives with middle driven crop rotation and cooperates, middle drive sprocket drives with the driven chain crop rotation by chain and cooperates, handlebar is fixed on the front portion of vehicle frame, the brake lever of brake is contained near the handlebar, its brake facing is installed in the brake position of wheel, be connected between brake lever and the brake facing, two one of pedal-rods are individually fixed in the center axletree, the other end is connected with two pedals respectively, vehicle frame is provided with and cooperates pedal to trample sporting spacing and return mechanism up and down, it is characterized in that: main drive wheel and middle flower wheel are gear, and the moving region of two pedals is in the rear of the vertical centering control axis of center axletree.

Above-mentioned rear is meant the side of the vertical centering control axis of center axletree towards trailing wheel.

Above-mentioned spacing and return mechanism can be made of the gear case that is fixed on vehicle frame, two center axletrees, a universal driving shaft, two center axletree coaxial line normal-running fiies are on gear case, the inner of center axletree is equipped with a bevel gear, the outer end of center axletree is respectively applied for two main drive wheels and two pedal-rods is installed, the universal driving shaft normal-running fit is on gear case, the inner of universal driving shaft is provided with one and two center axletree bevel gear ingear bevel gears, the outer end of universal driving shaft is provided with a position-limited lever, and position-limited lever cooperates with the spacing position in the gear case outside.Bevel gear mechanism also can substitute by cam mechanism or by two pitch wheel axles of arranging that parallel to the axis on the spacing and return mechanism.

On the basis of such scheme, the utility model can also be set up other mechanism, as other speed-changing mechanism, fold mechanism, move back car engaging and disengaging gear, headstock oscillating mechanism, headstock stabilizing mechanism etc.It is in order to push away when moving back bicycle, to allow the prime transmission separate with a back level transmission that the car engaging and disengaging gear is moved back in setting, boosts resistance little and become light.Moving back the car engaging and disengaging gear can be by being slidingly fitted in sliding sleeve on the tween drive spindle, being set in the sliding sleeve pull back spring on the tween drive spindle and the sliding sleeve driving lever that is hinged on the vehicle frame constitutes, have one or more peg to cooperate on the sliding sleeve with keyhole on the middle drive sprocket, the lower end of sliding sleeve driving lever stir with sliding sleeve cooperate, there is a handgrip its upper end.The sliding sleeve driving lever also can adopt the shift fork of soft drawn wire control to substitute.It is in order to increase the bicycle stability of headstock in use that the headstock stabilizing mechanism is set.The headstock stabilizing mechanism can be by being fixed on safety lever between headstock and the front wheel spindle, being installed in the anterior left and right sides of vehicle frame and the tension spring between the safety lever respectively and constituting.

Above-mentioned driving isolator can be a ratchet and pawl arrangement.

Above-mentioned main drive wheel can be a circular gear, also can be quadrant gear.

Above-mentioned bicycle part all can adopt alloy or engineering plastics manufacturing, to alleviate the weight of car body.

Be located at the place ahead of the vertical centering control axis of center axletree as moving region, should be considered as the utility model is become bad equivalent two pedals of the present utility model.

The beneficial effects of the utility model: because the main drive wheel of prime transmission and middle flower wheel adopt gear, the moving region of two pedals is arranged on the rear of the vertical centering control axis of center axletree, pedal form after promptly adopting, the pin that vehicle body shortens the back cyclist can not hinder turning to of front-wheel, so vehicle body can shorten dramatically, make taking up room of bicycle little, move conveniently, also adapted to the pursuit of people the small size bicycle.

Description of drawings

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

Fig. 1 is the scheme drawing of an embodiment of the utility model.

Fig. 2 is the back view of Fig. 1.

Fig. 3 is the enlarged diagram of the two-stage transmission device of Fig. 1.

Fig. 4 be Fig. 3 spacing and return mechanism analyse and observe enlarged diagram.

Fig. 5 is that the A-A of Fig. 3 analyses and observe enlarged diagram.

Among the figure: 1, vehicle frame; 2, handlebar; 3, front vehicle wheel; 4, rear wheel; 5, seat; 6 and 7, main drive wheel; 8, tween drive spindle; 9 and 10, middle flower wheel; 11, middle drive sprocket; 12, driven sprocket; 13, chain; 14 and 15, pedal; 16 and 17, pedal-rod; 18, drive isolator; 19, brake; 20, center axletree; 21, brake lever; 22, brake facing; 23, spacing and return mechanism; 24, the moving region of pedal; 25, vertical centering control axis; 26, gear case; 27, center axletree; 28, universal driving shaft; 29 and 30, center axletree bevel gear; 31, bevel gear; 32, position-limited lever; 33, spacing position; 34, sliding sleeve; 35, sliding sleeve pull back spring; 36, sliding sleeve driving lever; 37, peg; 38, keyhole; 39, handgrip; 40 and 41, safety lever; 42 and 43, tension spring.

The specific embodiment

With reference to Fig. 1～Fig. 3, the pedal-type bicycle up and down of this two-stage transmission, the handlebar 2 that comprises vehicle frame 1 and be mounted thereon, front vehicle wheel 3, rear wheel 4, seat 5, two main drive wheels 6 and 7, tween drive spindle 8, flower wheel 9 and 10 in the middle of two, middle drive sprocket 11, driven sprocket 12, chain 13, two pedals 14 and 15, two pedal- rods 16 and 17, drive isolator 18, brake 19, wherein, front and back wheel 3 and 4 difference normal-running fiies are in the front and rear part of vehicle frame 1, seat 5 is loaded on the top of vehicle frame 1, main drive wheel 6 and 7 is installed on the center axletree 20 of vehicle frame 1, tween drive spindle 8 normal-running fiies are on vehicle frame 1, in the middle of two flower wheel 9 and 10 and middle drive sprocket 11 be installed on the tween drive spindle 8, driven sprocket 12 is installed on the axle of rear wheel 4 by driving isolator 18, main drive wheel 6 and 7 is done to drive with middle flower wheel 9 and 10 respectively and is cooperated, middle drive sprocket 11 is done to drive with driven sprocket 12 by chain 13 and is cooperated, handlebar 2 is fixed on the front portion of vehicle frame 1, the brake lever 21 of brake 19 is contained near the handlebar 2, its brake facing 22 is installed in the brake position of wheel 3, be connected between brake lever 21 and the brake facing 22, two pedal- rods 16 and 17 1 are individually fixed in center axletree 20, the other end is connected with 15 with two pedals 14 respectively, vehicle frame 1 is provided with and cooperates pedal 14 and 15 to trample sporting spacing and return mechanism 23 up and down, it is characterized in that: main drive wheel 6 and 7 and middle flower wheel 9 and 10 be gear, two pedals 14 and 15 moving region 24 are in the rear of the vertical centering control axis 25 of center axletree 20.

With reference to Fig. 4, spacing and return mechanism 23 is by the gear case 26 that is fixed on vehicle frame 1, two center axletrees 20 and 27, a universal driving shaft 28 constitutes, two center axletrees 20 and 27 coaxial line normal-running fiies are on gear case 26, center axletree 20 and the inner of 27 are equipped with a bevel gear 29 and 30,20 and 27 outer ends of center axletree are respectively applied for installs two main drive wheels 6 and 7 and two pedal- rods 16 and 17, universal driving shaft 28 normal-running fiies are on gear case 26, the inner of universal driving shaft 28 be provided with one with two center axletree bevel gears 29 and 30 ingear bevel gears 31, the outer end of universal driving shaft 28 is provided with a position-limited lever 32, and position-limited lever 32 cooperates with the spacing position 33 in gear case 26 outsides.

With reference to Fig. 1, Fig. 3 and Fig. 5, pedal-type bicycle has also been set up and has been moved back the car engaging and disengaging gear about pedaling after the transmission of this two-stage, move back the car engaging and disengaging gear by being slidingly fitted in sliding sleeve 34 on the tween drive spindle 8, being set in the sliding sleeve pull back spring 35 on the tween drive spindle 8 and the sliding sleeve driving lever 36 that is hinged on the vehicle frame 1 constitutes, have one or more peg 37 to cooperate on the sliding sleeve 34 with keyhole 38 on the middle drive sprocket 11, the lower end of sliding sleeve driving lever 36 stir with sliding sleeve 34 cooperate, there is a handgrip 39 its upper end.

With reference to Fig. 1～Fig. 2, pedal up and down pedal-type bicycle after the transmission of this two-stage and also set up the headstock stabilizing mechanism, the headstock stabilizing mechanism by the front portion that is fixed on vehicle frame 1 and front vehicle wheel 3 spool between safety lever 40 and 41, anterior left and right sides and the tension spring between safety lever 40 and 41 42 and 43 that is installed in vehicle frame 1 respectively constitute.

Claims (4)

1. the pedal-type bicycle up and down of a two-stage transmission, comprise vehicle frame and the handlebar that is mounted thereon, front and back wheel, seat, two main drive wheels, tween drive spindle, flower wheel in the middle of two, middle drive sprocket, driven sprocket, chain, two pedals, two pedal-rods, drive isolator, brake, wherein, front and back wheel difference normal-running fit is in the front and rear part of vehicle frame, seat is loaded on the top of vehicle frame, main drive wheel is installed on the center axletree of vehicle frame, the tween drive spindle normal-running fit is on vehicle frame, flower wheel and middle drive sprocket are installed on the tween drive spindle in the middle of two, driven sprocket is installed on the rear vehicle shaft by driving isolator, main drive wheel drives with middle driven crop rotation and cooperates, middle drive sprocket drives with the driven chain crop rotation by chain and cooperates, handlebar is fixed on the front portion of vehicle frame, the brake lever of brake is contained near the handlebar, its brake facing is installed in the brake position of wheel, be connected between brake lever and the brake facing, two one of pedal-rods are individually fixed in the center axletree, the other end is connected with two pedals respectively, vehicle frame is provided with and cooperates pedal to trample sporting spacing and return mechanism up and down, it is characterized in that: main drive wheel and middle flower wheel are gear, and the moving region of two pedals is in the rear of the vertical centering control axis of center axletree.

2. press the pedal-type bicycle up and down of the described two-stage transmission of claim 1, it is characterized in that described spacing and return mechanism is by the gear case that is fixed on vehicle frame, two center axletrees, a universal driving shaft constitutes, two center axletree coaxial line normal-running fiies are on gear case, the inner of center axletree is equipped with a bevel gear, the outer end of center axletree is respectively applied for two main drive wheels and two pedal-rods is installed, the universal driving shaft normal-running fit is on gear case, the inner of universal driving shaft is provided with one and two center axletree bevel gear ingear bevel gears, the outer end of universal driving shaft is provided with a position-limited lever, and position-limited lever cooperates with the spacing position in the gear case outside.

3. press the pedal-type bicycle up and down of claim 1 or 2 described two-stage transmissions, it is characterized in that also being equipped with on the described bicycle and move back the car engaging and disengaging gear, move back the car engaging and disengaging gear by being slidingly fitted in sliding sleeve on the tween drive spindle, being set in the sliding sleeve pull back spring on the tween drive spindle and the sliding sleeve driving lever that is hinged on the vehicle frame constitutes, have one or more peg to cooperate on the sliding sleeve with keyhole on the middle drive sprocket, the lower end of sliding sleeve driving lever stir with sliding sleeve cooperate, there is a handgrip its upper end.

4. press the pedal-type bicycle up and down of claim 1 or 2 described two-stage transmissions, it is characterized in that also being equipped with on the described bicycle headstock stabilizing mechanism, the headstock stabilizing mechanism is by being fixed on safety lever between headstock and the front wheel spindle, being installed in the anterior left and right sides of vehicle frame and the tension spring between the safety lever respectively and constituting.

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