CN2279308Y - Elliptical chain wheel bicycle - Google Patents

Abstract

The utility model relates to an elliptical chain wheel bicycle, which comprises a car frame (1), a handle (2), a saddle (3), a front wheel (4), a rear wheel (5), a crank (6), a pedal (7), a sprocket (8), a chain (9) and a flywheel (10), etc. The utility model is characterized in that the sprocket (8) is an ellipsoid sprocket (8) and is provided with an adjusting sprocket (11) to form a balance transmission system and a variable speed system. The utility model has the advantages of simple structure, stroke increasing, labor saving, rapidness and high efficiency, etc.; the utility model is not only suitable for use of average consumers, but also can universally improve the result of the vehicle racing game.

Description

The ellipse wheel bicycle

The invention belongs to bicycle, specifically, is a kind of ellipse wheel bicycle.

Existing bicycle all adopts circular chain-wheel, and the transmission of process chain is rotated flywheel, thereby realizes the normal operation of bicycle.But with regard to the operating efficiency and speed of further raising bicycle especially racing car, there is certain deficiency at large in the circular chain-wheel bicycle.From the mechanics angle analysis, the resistance arm of force of the chain effect that circular chain-wheel is suffered is the constant force arm, and people to pedal the acting force arm of stepping on bicycle be the variable force arm.When pedal and crank are positioned near sprocket wheel top or the bottom, less by the arm of force and rotating torque that pedal and crank affact on the sprocket wheel.Therefore pedal at this position and step on bicycle and comparatively require great effort, its effect is lower, and this is particularly evident when going up a slope.In fact people are not firmly pedaled when pedal is positioned at top or bottom mostly and are stepped on, and allow pedal and crank rotate an angle according to inertia.In any case just become the poor efficiency transitional region of sprocket wheel like this corresponding near the sprocket wheel teeth of the position crank direction, in addition especially with the crank vertical direction near corresponding sprocket wheel teeth then constitute the efficient operation zone of sprocket wheel.The teeth number in efficient operation zone and stressed moment thereof have determined the speed and the efficient of bicycle operation.The teeth of circular chain-wheel are evenly distributed on the outer rim of sprocket wheel, thereby adopt circular chain-wheel can't be increased in the teeth number in efficient operation zone in the one-period motion and work-hours effectively and reduce the teeth number of poor efficiency transitional region and operating efficiency and the speed that traverse time improves bicycle.Existing variable speed bicycle is recently to realize speed change to change flywheel for the rotating speed of sprocket wheel by the flywheel multi-speed wheel of setting up different-diameter and sprocket wheel.Do not set up change wheel and can't realize the speed change of bicycle.Because adopt circular chain-wheel, above-mentioned weak point still exists.In addition, because speed change system itself has increased resistance, this deficiency is more remarkable.In view of the foregoing, the further raising of especially racing car performance of bicycle is restricted.

Purpose of the present invention aims to provide a kind of ellipse wheel bicycle, on structure existing bicycle is improved, and in the hope of operating efficiency and speed laborsaving relatively, that improve bicycle, improves the games results of racing car.

The present invention is a kind of ellipse wheel bicycle.

The present invention is achieved in that bicycle comprises vehicle frame, handlebar, saddle, front-wheel, trailing wheel, pedal, crank, sprocket wheel, chain, flywheel etc., the laborsaving quick bicycle of ellipse wheel of this first utility model, its sprocket wheel is an ellipse wheel, realizes the transmission of ellipse wheel and flywheel by chain; For preventing that the kinetic chain degree of tightness of ellipse wheel on-circular from differing even take off chain, on ellipse wheel and flywheel chain loop, chain-regulating wheel is set, select design parameters, can make uneven ellipse wheel, chain, flywheel driving system obtain adjustment, complementary and balanced, make ellipse wheel, chain, flywheel and chain-regulating wheel form balanced driving system, guarantee that driving system normally moves.Ellipse wheel can be fixed on the crank, and the support of chain-regulating wheel can be installed on hind axle or the vehicle frame.Laborsaving for realizing, quick, the near its minor axis position of ellipse wheel is consistent with the direction of crank.The laborsaving bicycle at a slow speed of ellipse wheel of this second utility model, its sprocket wheel is an ellipse wheel, on ellipse wheel and flywheel chain loop chain-regulating wheel is set simultaneously; Laborsaving for realizing, at a slow speed, the position is consistent with the direction of crank near the major axis of ellipse wheel.The ellipse wheel variable speed bicycle of this 3rd utility model, its sprocket wheel is an ellipse wheel, on ellipse wheel and flywheel chain loop chain-regulating wheel is set simultaneously; Also be provided with selector between ellipse wheel and crank, the angle of convertible crank of selector and ellipse wheel major and minor axis is to realize the speed change of bicycle when gear shift.The ellipse wheel variable speed bicycle of this 4th utility model, its sprocket wheel contains ellipse wheel, on sprocket wheel and flywheel chain loop chain-regulating wheel is set simultaneously; For realizing speed change, flywheel is the flywheel that contains the combination of flywheel multi-speed wheel, also correspondingly is provided with chain fork shift mechanism, makes ellipse wheel, chain, flywheel and chain-regulating wheel form the multi-stage equalizing driving system.In order further to enlarge speed range, sprocket wheel also can be the chain wheel set that contains ellipse wheel and merges and be provided with corresponding chain fork shift mechanism.

The utility model will be further described by indefiniteness embodiment below in conjunction with accompanying drawing.

Fig. 1 is the scheme drawing of ellipse wheel bicycle of the present utility model, and Fig. 2 is the scheme drawing of ellipse wheel.

Now referring to Fig. 1, Fig. 2.Bicycle comprises vehicle frame [1], handlebar [2], saddle [3] front-wheel [4], trailing wheel [5], crank [6], pedal [7], sprocket wheel [8], chain [9], flywheel [10] etc.The laborsaving quick bicycle embodiment of ellipse wheel of this first utility model, sprocket wheel [8] is ellipse wheel [8], on ellipse wheel [8] and flywheel [10] chain [9] loop, chain-regulating wheel [11] is set, selects design parameters can make ellipse wheel [8], chain [9], flywheel [10] and chain-regulating wheel [11] form balanced driving system.Laborsaving for realizing, quick, the near its minor axis part of ellipse wheel [8] is consistent with the direction of crank [6].The outer rim of chain-regulating wheel [11] can be provided with several teeth, and its tooth pitch is consistent with the pitch of chain [9].The support of chain-regulating wheel [11] can be installed in the axle of trailing wheel [5] and go up or be installed on the vehicle frame [1].When chain [9] passed through the external tooth transmission of ellipse wheel [8], flywheel [10] and chain-regulating wheel [11], chain-regulating wheel [11] can freely rotate thereupon.Chain-regulating wheel [11] can one-sidedly be arranged on the below or the top of the ellipse wheel [8] and flywheel [10] line of centres rightly, but also bilateral is arranged on the below and the top of this line of centres rightly simultaneously.Chain-regulating wheel [11] can be transfers the chain single-wheel also to can be accent chain two-wheel.Accent chain two-wheel comprises to be transferred chain main wheel [11-1] and transfers chain accessory whorl [11-2], and they have rotating shaft separately and have rotating shaft together in addition altogether.Chain [9] returns ellipse wheel [8] and constitutes balanced loop through transferring chain main wheel [11-1], accent chain accessory whorl [11-2], flywheel [10] by ellipse wheel [8].Transfer the chain performance for improving better, can set up elastic element (not drawing among the figure) on the chain-regulating wheel [11].The laborsaving bicycle at a slow speed of the ellipse wheel embodiment of this second utility model, its structure is identical with the laborsaving quick bicycle of the ellipse wheel of first utility model, but laborsaving for realizing, at a slow speed, part is consistent with the direction of crank [6] near the major axis of ellipse wheel [8].The ellipse wheel variable speed bicycle embodiment of this 3rd utility model, its structure is identical with the ellipse wheel bicycle of first, second utility model, but for realizing speed change, also is provided with selector [12] between ellipse wheel [8] and crank [6].Selector [12] comprises inner ring and outer ring, and the gear shift ratchet device is arranged therebetween, and inner ring links to each other with crank [6] axle, and the outer ring links to each other with ellipse wheel [8] centre hole.When crank [6] can drive selector [12] inner ring and outer ring and ellipse wheel [8] forward transfer when just changeing; When crank [6] when reversing at a slow speed, can make inner ring, outer ring and ellipse wheel [8] keep the forward transfer; When crank [6] reverses rapidly or when crank [6] counter-rotating and outer ring and ellipse wheel [8] when being braked (brake equipment does not draw), can make inner ring for the outer ring have an angle of twist and and then the location, the angle of convertible like this crank [6] and ellipse wheel [8] major and minor axis realizes shifted.The ellipse wheel variable speed bicycle embodiment of this 4th utility model, its sprocket wheel [8] contains ellipse wheel [8], simultaneously on sprocket wheel [8] and flywheel [10] chain [9] loop chain-regulating wheel [11] is set, chain-regulating wheel [11] and method to set up thereof are identical with the quick bicycle of the ellipse wheel of first utility model.For realizing speed change, flywheel [10] also correspondingly is provided with chain [9] fork shift mechanism for containing the flywheel [10] of flywheel multi-speed wheel combination, makes ellipse wheel [8], chain [9], flywheel [10], chain-regulating wheel [11] form the multi-stage equalizing driving system.In order further to enlarge speed range, sprocket wheel [8] also can be the chain wheel set that contains ellipse wheel [8] and merges and be provided with corresponding fork shift mechanism.The sprocket wheel combination can be made up of some ellipse wheels that vary in size [8], also can be made up of ellipse wheel [8] and the circular chain-wheel that varies in size (not drawing among the figure).When as quick car, the near its minor axis position of corresponding ellipse wheel [8] is consistent with the direction of crank [6].Chain-regulating wheel [11] can be the two-wheel combination of dividing into that has elastic element, also can set up a rise sprocket wheel combination (not drawing among the figure) again.Ellipse wheel of the present utility model [8], it comprises centre hole, outer rim teeth etc., can hollow out in the middle of it, the pitch consistent (can certainly dispense the part teeth) of perforation width between centers and chain, its outer rim perforation center is oval with line, can certainly be the approximate ellipsoidal that is made of circular arc, smooth curve, broken line even part straight line.Can slow down corresponding radius of curvature and change when part is for circular arc near the major axis of ellipse wheel [8], ellipse wheel [8] is to the peak value impact of chain [9] and flywheel [10] when slowing down quick operation.

Further more below brief description operation of the present utility model and advantage.

Ellipse wheel in the utility model [8], chain [9], flywheel [10] and chain-regulating wheel [11] driving system, can make uneven ellipse wheel [8], chain [9], flywheel [10] driving system obtain adjustment, complementary and balanced, can guarantee that driving system normally moves, prevent chain degree of tightness mistake degree and take off chain.For the laborsaving quick bicycle of ellipse wheel, because chain [9] the resistance arm of force that the teeth number of poor efficiency transitional region is less, traverse time is short and suffered is less, therefore can be comparatively laborsaving; Chain [9] the resistance arm of force long and suffered owing to teeth showed increased, the work-hours in efficient operation zone is bigger, and pedal the downward zone of power this moment just, therefore can increase power and efficient, raising speed can reduce to pedal when speed is identical and step on frequency.For the laborsaving bicycle at a slow speed of ellipse wheel, because the teeth number in efficient operation zone is less, work-hours is short and chain [9] the resistance arm of force is less, so power is lower, speed is slower, can be comparatively laborsaving (firmly do not pedal step on) in transitional region.For the variable speed bicycle that adopts selector [12], owing to can change mode of operation so can realize the speed speed change.For the variable speed bicycle that contains ellipse wheel [8] and flywheel [10] change wheel, obviously can implement stroke, performance and speed that speed change also can obviously improve existing circular chain-wheel derailleur very easily, not only be applicable to ordinary consumer, but also can improve the games results of racing car.The driving system of this ellipse wheel [8], chain [9], flywheel [10] and the also alternative certainly trishaw of chain-regulating wheel [11] driving system, water cycle etc.

Claims (8)

1, a kind of ellipse wheel bicycle, it comprises vehicle frame [1], handlebar [2], saddle [3], front-wheel [4], trailing wheel [5], crank [6], pedal [7], sprocket wheel [8], chain [9], flywheel [10] etc., it is characterized in that sprocket wheel [8] contains ellipse wheel [8], on ellipse wheel [8] and flywheel [10] chain [9] loop, chain-regulating wheel [11] is set.

2. ellipse wheel bicycle according to claim 1 is characterized in that the near its minor axis position of ellipse wheel [8] is consistent with the direction of crank [6].

3. ellipse wheel bicycle according to claim 1 is characterized in that near the position of major axis of ellipse wheel [8] is consistent with the direction of crank [6].

4. ellipse wheel bicycle according to claim 1 is characterized in that also being provided with selector [12] between ellipse wheel [8] and crank [6].

5. ellipse wheel bicycle according to claim 1 is characterized in that flywheel [10] for containing the flywheel [10] of flywheel multi-speed wheel combination, also correspondingly is provided with chain [9] and dials retaining device.

6. ellipse wheel bicycle according to claim 1 or 5 is characterized in that sprocket wheel [8] for containing the chain opinion combination of ellipse wheel [8], also correspondingly is provided with chain [9] and dials retaining device.

7. according to the described ellipse wheel of claim 1 to 6 [8], it is characterized in that ellipse wheel [8] contains the ellipse wheel [8] of outer rim perforation center contour for the approximate ellipsoidal that is made of circular arc, smooth curve, broken line even part straight line.

8. ellipse wheel bicycle gearshift according to claim 4 [12] is characterized in that selector [12] is made up of inner ring, outer ring and ratchet device therebetween, and inner ring links to each other with crank [6] axle, and the outer ring links to each other with ellipse wheel [8] centre hole.