CN2278632Y - Folding lever speed-changing two-person driving four-wheel vehicle - Google Patents

Abstract

The utility model relates to a manpower four-wheel bicycle, which can be ridden by two persons or one person. Has foldability, easy storage and speed changing function. The bicycle can be ridden without exercise, the driving gravity center is low, and the dead point problem of force during circumferential pedaling is eliminated. The structure is characterized in that a chain is driven by the swinging of a pair of levers to drive the rear axle. The two ends of the chain are respectively hinged with the sliding blocks on a certain position of the two levers, and the positions of the sliding blocks on the levers are adjustable, so that the speed changing function can be realized. The chain is meshed with one flywheel on the rear driving shaft and the other flywheel bypassing the driving shaft in sequence.

Description

The double driving four-wheeled of folding lever speed change

The utility model is a kind of manually driven quadricycle.

The bicycle of people's use at present, preceding cyclo, back cyclo is circumference and steps drive-type.Its bent axle pedal has the dead point of a power, and promptly people's leg stretches back and pedal bent axle when in alignment, and moment is zero.Have only to change the angle pedal by foot and tide over the dead point of power, and step circumference and limited by circle diameter.In addition, the inaccurate by bike band of regulation people on the traffic regulation, and its safety and traveling comfort are relatively poor, also are difficult for being grasped by everyone; And three-wheel vehicle also can only to be a people ride that a people sits, the person's of riding physical demands is bigger, and deposits difficulty.

The purpose of this utility model provides a kind of by two foot pedal lever bicycle driven.It can eliminate the dead unit problem of the power of bent axle pedal circular movement generation effectively, both feet step apart from can arbitrarily changing in the action radius of leg simultaneously, speed also can be adjusted as required at any time: and double actuating device is provided, and having changed in the past, a people rides the pattern that a people sits.Owing to be provided with four wheels, a kind of uneven device that produces the sub-unbalance stress of four-wheel in ground that prevents also be provided.

The purpose of this utility model is achieved in that the circular arc crank motion that utilizes two pedal arms drives a chain, drives two flywheels respectively.Carry out the chain commutation by a guide wheel.Be that the left foot pedal arm is forward the time.The right steps arm is backward: the chain that the left foot pedal arm is drawn drives left flywheel and rotates, the right steps arm then by guide wheel left the stretcher arm chain is provided, vice versa, again because the point of contact of the chain of pedal arm traction is movably, so its pendulum radius is adjustable, be that to be pulled length be transformable once scrunching in the process to chain, for the chain point of contact can be moved, one speed governing slide block is installed on pedal arm, it and chain are pivotallys attached, utilize the locking of the different knock holees that the speed governing slide block sets in advance on pedal arm, the displacement of chain is changed as requested at any time.Cap head lock pin by the band handle of spring return is housed on the speed governing slide block, during speed governing with pulling fixed handle, make lock pin break away from knock hole, then slide block is axially moved to desired location along pedal arm, release handle, lock pin just inserts in the knock hole under action of the spring slide block is pinned, thereby reaches the purpose of speed governing.In order to solve the reversing problem, be added with back clutch, be convenient to reversing, loosen the clutch during reversing clockwise rotates backward then and can fall back with the reversing handgrip.

The utility model has been because provide a kind of reciprocating type fork to drive the arm of force, and for both feet circular arc successively step, so eliminated the dead unit problem of power.A kind of device of variable-ratio also is provided simultaneously.

Another purpose of the present utility model provides the four-wheeled of a double seat.

This purpose of the present utility model be realize like this connect at the folding shaft place one with back axle fork bonded assembly stub axle.When framework was in the different planes before and after it can make, free torsion.Therefore played four wheels when Different Plane, guaranteed kiss the earth simultaneously, made stressed even.

Another purpose of the present utility model provides a folding location mode.

This purpose of the present utility model is achieved in that between the front and back framework of car, is to come bonded assembly by one with car body horizontal S. A. in horizontal surface.Thereby be folding.And two folded parts overlap, and are in use unlikely, and central authorities subside.With a location locking bit, the location lock makes it when non-artificial unblanking by spring control, remains closed condition during use, and back of seat also is folding, and it is located by the handrail ratchet.

The utility model is because be the four wheels kiss the earth.With traditional three-wheel vehicle, bicycle is compared, and good stability is convenient to people study, and almost all have can directly driving per capita of function on foot.It can fold in addition, than traditional three-wheel vehicle, has the performance that is easy to deposit, the utility model can be driven simultaneously by double, than traditional three-wheel vehicle, solved can only single driving problem.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 2 is the stereoscopic principal figure according to driving system----the pedal arm lever driving device that the utility model proposes.

Fig. 3. be stereoscopic principal figure according to the novel folding and free torsion device that provides of this reality,

Below in conjunction with Fig. 2, Fig. 3. describe in detail respectively, according to the details and the service condition of the concrete device that the utility model proposes.

Pedal arm lever actuated system comprises two pedal arms (3), and its end is an axle sleeve, is enclosed within on the preceding framework axle.The other end is a pedal, and its length is decided according to the length of human leg.Its crank motion is realized by two flywheels (19) and a guide wheel (20).When a pedal arm (3) is driven to when preceding, left-hand tread plate arm (3) drives chain (21), chain (21) drives left flywheel (17), and left flywheel (17) drives rear axle (14), and the right-hand tread plate arm is driven and swings backward through right flywheel and guide wheel (20) by same chain simultaneously.Finish once and scrunch.Pedal arm (3) is hinged with chain (21).Because of pedal arm (3) is to do circular motion.Utilize the locking of the different knock holees that on pedal arm, set in advance with chain (21) pivotally attached speed governing slide block (4).The displacement of chain is changed as requested at any time, in order to fall back, power-transfer clutch (13) is housed between a rear axle (14) and the trailing wheel, control its folding with handgrip (9), when power-transfer clutch (13) is closed, car normally to overtake, if will move backward, then need loosen the clutch (13), shake with reverser handle (12) and retreat.

Below just foldingly once illustrate with the free torsion device.Because vehicle frame (2) is hinged with folding shaft (19) with stub axle (15), so this car is can be folding around axle, after folding, two parts are overlapping, because of its folding direction is that the car two ends are downward, and vehicle frame (2) and back axle (15,16) some is overlapping, and in use unlikely like this, middle body subsides, be added with two springs at lap, its effect can reduce the vibration of car body.When riding, two springs are by spring location lock (18) locking, when pinching the location shank of the key with hand one.Lock is just opened, and is promptly collapsible.

Folding shaft (19) is connected with and back axle fork (16) bonded assembly stub axle (15), and it plays four wheels when Different Plane, guarantees the effect of energy kiss the earth simultaneously.Back axle fork (16) central porose just in time is mated.Behind bridge fork (16) medium pore, limit by a ring washer (22), thereby play the effect that anti-injustice is reversed after this axle (15) is inserted.

Fig. 1 is stereoscopic figure of the present utility model.

Fig. 2 is a driving system of the present utility model--the stereoscopic principal figure of-pedal arm leverage.

Fig. 3 is the stereoscopic principal figure of folding and free torsion device of the present utility model.

Fig. 4 is a schematic diagram of the present utility model.

Referring to Fig. 2, pedal arm (3) upper end circle hole sleeve is on balance staff (24); Slide block (4) is enclosed within on the pedal arm, can be positioned on a certain location hole, slide block (4) and chain (21) hinged respectively with flywheel (17) guide wheel (20), hinged with another slide block (4) again after another flywheel (17) engagement.

Provide the front and back frame folding center shaft referring to Fig. 3 folding shaft (19), back axle fork (16) is enclosed within on the stub axle (15) and can rotates.

Accompanying drawing detail list 1. panels 2. vehicle frames 3. pedal arms 4. speed-adjustable slide blocks 5. steering trapezium devices 6. steering front wheels 7. turn to handgrip 8. seats 9. reverse clutch handgrips 10. armrests 11. rear drive sprockets 12. reversing handgrips 13. reverse clutch 14. rear axles 15. stub axles 16. back axle forks 17. flywheels 18. spring positioning locks 19. folding shaft 20. guide wheels 21. chains 22. anticreep back-up rings 23. brake levers 24. balance staffs

Claims (5)

1. the double driving four-wheeled of folding lever speed change, by pedal arm (3), speed governing piece (4), chain (21), flywheel (17), guide wheel formations such as (20), it is characterized in that: a speed governing piece (4) is arranged, the hinged chain of speed governing piece (4) (21), chain (21) and flywheel (17) engagement on the pedal arm (3), and walk around guide wheel (20), after another flywheel (17) engagement, connect again with speed governing slide block (4) on another pedal arm (3).

2. according to the described car of claim 1: it is characterized in that pedal arm lever (3) one ends have circular hole and are enclosed within the balance staff (24).

3. according to the described car of claim 1: it is characterized in that being with a slide block (4) on the foot pedal lever (3), and on pedal arm (3), be provided with some knock holees, can drive in the wrong direction and adjust the position of slide block (4) on pedal arm (3).

4. according to the described car of claim 1: it is characterized in that chain (21) through flywheel (17), guide wheel (20) after another flywheel (17) engagement, is connected with two slide blocks (4) respectively.

5. according to the double driving four-wheeled of right 1 described folding lever speed change, it is characterized in that being with stub axle (15) by on the folding shaft (19)

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