CN205327314U - Circular arc planetary geared bicycle actuating system that reciprocates - Google Patents

Abstract

The utility model discloses a circular arc planetary geared bicycle actuating system that reciprocates, support on the bicycle rack body and the drive shaft that links to each other with bicycle drive sprocket including rotating, its characterized in that: the both ends of drive shaft be connected with the actuating mechanism that the symmetry set up respectively, actuating mechanism including the direct tooth rest that links to each other with the bicycle rack body, circumference evenly distributed has three back shaft on the tooth rest, it has planetary gear all to rotate the supporting on every back shaft, is connected with the sun gear in the drive shaft, and the outer circumference of sun gear simultaneously and three planetary gear mesh, and three planetary gear still mesh mutually with the interior circumference of outer ring gear simultaneously, circle at the external tooth and be provided with the connecting rod, the end of connecting rod is provided with the pedal, the drive shaft on respectively the key -type connection have with one -way round of sun gear connection and one -way round of being connected with outer ring gear.

Description

The reciprocal planetary gear bicycle drive system of circular arc

Technical field

This utility model relates to a kind of driving structure, particularly a kind of reciprocal planetary gear bicycle drive system of circular arc。

Background technology

Bicycle is a kind of environmental protection and energy saving, compact, the vehicles flexible and convenient to use, traditional bicycle structure is as follows: be provided as the front-wheel of follower and deflecting roller in the support body front portion of bicycle, rear portion is provided as the trailing wheel of drivewheel, the rotation axle of trailing wheel and a passive sprocket coaxiality rotate, and this is connected with drive sprocket by chain by movable sprocket, this drive sprocket is driven by pedal rod and step tread plate and rotates, thus realizing the rotation of drivewheel (trailing wheel)。There is following defect in the structure of this traditional bicycle structure, particularly drive part: in motor process, each pedal rod being connected with pedal is required for ceaselessly doing unidirectional circulation circular motion, and when each step tread plate runs within the scope of top (and bottom) certain radian of circular path, this region is invalid running part, expends energy in vain；And the overall construction design of bicycle needs to consider whether that the movement locus of parts and pedal rod is interfered, therefore the overall volume of bicycle is bigger, and the length of pedal rod is also substantially stationary, it is impossible to increase the arm of force by increasing the length of pedal rod, to reach labour-saving purpose。Therefore a kind of new bicycle that can solve the problem that the problems referred to above is needed now to drive structure。

Summary of the invention

This utility model is to solve the above-mentioned deficiency existing for prior art, a kind of simple in construction is proposed, design ingenious, can reduce to greatest extent and even avoid the foot-operated driving structure driving and flogging a dead horse in bicycle process, apply the compact overall structure of bicycle of this driving structure, compact, just can reach with relatively small driving force to drive effect preferably。

Technical solution of the present utility model is: a kind of reciprocal planetary gear bicycle drive system of circular arc, the driving axle 2 being connected on bicycle frame and with bicycle main movable sprocket 1 including rotating support, it is characterized in that: the described two ends driving axle 2 are connected to symmetrically arranged driving mechanism 3, described driving mechanism 3 includes the tooth rest 4 being directly connected with bicycle frame, on tooth rest 4, even circumferential distribution has three to support axle, on each support axle, rotating support has planetary gear 5, it is connected to central gear 6 on driving shaft 2, and the excircle of central gear 6 engages with three planetary gears 5 simultaneously, and described three planetary gears 5 are also meshed with the inner periphery of external toothing 7 simultaneously, external toothing 7 is provided with connecting rod 8, the end of connecting rod 8 is provided with foot and pedals, on described driving axle 2, key is connected to the one-way wheel being connected with central gear 6 and the one-way wheel being connected with external toothing 7 respectively, one-way wheel respectively the first one-way wheel 9 and the second one-way wheel 10 being connected with central gear 6 on two set driving mechanisms 3, the one-way wheel being connected with external toothing 7 respectively the 3rd one-way wheel 11 and the 4th one-way wheel 12, and the first one-way wheel 9 is identical with the rotation direction of the 4th one-way wheel 12, second one-way wheel 10 is identical with the rotation direction of the 3rd one-way wheel 11, and first the rotation direction of one-way wheel 9 and the second one-way wheel 10 contrary。

This utility model compared with the existing technology, has the advantage that

This kind of reciprocal planetary gear bicycle drive system of circular arc, its simple in construction, design ingenious, rationally distributed。Its problem existing for traditional bicycle driving structure, creatively design a kind of and conventional diverse driving structure of type of drive, this driving structure has the advantage that first its each pedal connecting rod in driving process only moves back and forth certain radian on circular arc, and the scope of this motion is precisely the scope that human body is best suitable for having an effect, biasing effect is best in other words；It is compared with traditional structure, and the move distance of its pedal connecting rod decreases about 1/3rd, namely drives by shorter move distance, less external force, reaches driving effect essentially identical with conventional ADS driving structure；And owing to its total movement track can be carried out force, eliminate the consuming of idle work in traditional structure；In addition, owing to its movement locus relates merely to the forward portion driving axle, so drive the restriction suffered by axle integral position on bicycle frame less, therefore can being moved forward by trailing wheel, the overall structure making bicycle is compacter and small and exquisite, reduces floor space, the more important thing is, therefore pedal connecting rod also obtain bigger space, it is possible to suitable is lengthened, to obtain the longer arm of force；The structure of this employing planetary gear system also has the feature of compact conformation, uniform force simultaneously。In sum, it may be said that this bicycle driving structure has possessed multiple advantage, being particularly suitable for popularization and application in the art, its market prospect is very wide。

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model embodiment。

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described。As shown in Figure 1: a kind of reciprocal planetary gear bicycle drive system of circular arc, the driving axle 2 being connected on bicycle frame and with bicycle main movable sprocket 1 including rotating support, it is respectively arranged with symmetrically arranged driving mechanism 3 at the two ends driving axle 2, described driving mechanism 3 includes the tooth rest 4 being directly connected with bicycle frame, on tooth rest 4, even circumferential distribution has three to support axle, on each support axle, rotating support has planetary gear 5, described driving axle 2 is connected to central gear 6, and the excircle of central gear 6 is meshed with three planetary gears 5 simultaneously, simultaneously described three planetary gears 5 are also meshed with the inner periphery of external toothing 7 simultaneously, described external toothing 7 is provided with connecting rod 8, the end of this connecting rod 8 is provided with foot and pedals, key is connected to the one-way wheel being connected with central gear and the one-way wheel being connected with external toothing 7 respectively on driving shaft 2, owing to this device includes two set driving mechanisms 3, therefore two one-way wheel being connected with central gear 6 respectively the first one-way wheel 9 and the second one-way wheels 10, and two one-way wheel being connected with external toothing 7 respectively the 3rd one-way wheel 11 and the 4th one-way wheels 12, and the first described one-way wheel 9 is identical with the rotation direction of the 4th one-way wheel 12, and the second one-way wheel 10 is identical with the rotation direction of the 3rd one-way wheel 11, and first the rotation direction of one-way wheel 9 and the second one-way wheel 10 then contrary。

The work process of the circular arc reciprocal planetary gear bicycle drive system of this utility model embodiment is as follows: user depresses the pedal of side, the connecting rod 8 being connected with this pedal is driven to swing, connecting rod 8 drives external toothing 7 to rotate, owing to the external toothing 7 of this side is connected with driving axle 2 by the 3rd one-way wheel 11, therefore the rotation of external toothing 7 can drive driving axle 2 to rotate, and the first one-way wheel 9 being now similarly on this driving mechanism 3 dallies；The rotation driving axle 2 can be delivered on the driving mechanism 3 of opposite side, owing to the rotation direction of the second one-way wheel 10 on this driving device 3 is identical with the rotation direction of the 3rd one-way wheel 11, therefore the central gear 6 on this driving device 3 can rotate along with the rotation driving axle 2, owing to the tooth rest 4 in driving device 3 is fixing, therefore the rotation of central gear 6 can pass to the external toothing 7 of this driving device 3 by planetary gear 5, this external toothing 7 is contrary with the rotation direction of the external toothing 7 of the driving device 3 depressed, that is when user depresses the pedal of side, the pedal of opposite side can be moved by above-mentioned action reversed, namely it is swung up；

And the pedal travel of side is to the extreme position of bottom, the pedal travel of opposite side is to the extreme position on top, and now user tramples the pedal being positioned at top, and above-mentioned action reversed carries out, and the pedal being originally positioned at bottom rises again and moves to top；

So repeatedly, it is achieved drive the lasting rotation of axle 2, finally realize the traveling of bicycle。

Claims (1)

1. the reciprocal planetary gear bicycle drive system of circular arc, the driving axle (2) being connected on bicycle frame and with bicycle main movable sprocket (1) including rotating support, it is characterized in that: the two ends of described driving axle (2) are connected to symmetrically arranged driving mechanism (3), described driving mechanism (3) includes the tooth rest (4) being directly connected with bicycle frame, the upper even circumferential distribution of tooth rest (4) has three to support axle, on each support axle, rotating support has planetary gear (5), driving, axle (2) is connected to central gear (6), and the excircle of central gear (6) engages with three planetary gears (5) simultaneously, and described three planetary gears (5) are also meshed with the inner periphery of external toothing (7) simultaneously, external toothing (7) is provided with connecting rod (8), the end of connecting rod (8) is provided with foot and pedals, on described driving axle (2), key is connected to the one-way wheel being connected with central gear (6) and the one-way wheel being connected with external toothing (7) respectively, two upper one-way wheel respectively the first one-way wheel (9) being connected with central gear (6) of set driving mechanism (3) and the second one-way wheels (10), the one-way wheel being connected with external toothing (7) respectively the 3rd one-way wheel (11) and the 4th one-way wheel (12), and the first one-way wheel (9) is identical with the rotation direction of the 4th one-way wheel (12), second one-way wheel (10) is identical with the rotation direction of the 3rd one-way wheel (11), and first the rotation direction of one-way wheel (9) and the second one-way wheel (10) contrary。