CN1278501A - Man-powered rocker-planetary gear transmission mechanism - Google Patents

Abstract

The present invention discloses a manpower-driven transmission equipment, which is characterized by that it utilizes swing link and combines it with planetary gear transmission device to drive work mother machine to greatly raise transmission ratio, and increase effective moment of swing link when it is worked. Said equipment can effectively convert the human force (including foot force and hand force) into driving moment to driven working machine. Said invention can be extensively used in the fields of manpower-driven bicycle, ship and farm machinery, etc..

Description

Man-powered rocker-planetary gear transmission mechanism

The present invention relates to a kind of by the manually driven driving device.

The driving device of existing bicycle adds the internal connecting type ratchet device for the chain-driving speed increasing mechanism, this type of drive is simple in structure, good sliding performance is arranged and be easy to realize speed change, therefore uses till today, but exist climbing and acceleration capacity not strong, by bike the shortcoming of relatively requiring great effort.This is bad the causing of treadle power transmission to pedal the time owing to existing bicycle.When to pedal, treadle is done the rotation of 360 degree, the interior firmly pedal of 90 degree scopes but reality is only had an appointment, all the other then are idle running, when bipod is alternately exerted oneself, for some time, two pin are not all used power, bicycle slips over a segment distance by inertia, make treadle rotate about 90 the degree idle travels after, just exert oneself once more.On level road, it is unchallenged that bicycle slips over this section null formula, and in when climbing, and the cyclist can obviously feel if violent Pedalling in scope firmly not, and bicycle just can not slip over this paragraph idle travel and stop.In addition, effective arm of force M=treadle length L ^*Sina (wherein a angle is the angle between power direction and the treadle) has only the degree as a=90, and when promptly power direction was perpendicular to treadle, effectively arm of force maximum was the most laborsaving to pedal.Rotate because treadle is made 360 degree, effectively the arm of force alters a great deal, and can not make full use of power, also can't adopt the method that increases treadle length to reach the labour-saving effect.

The purpose of this invention is to provide a kind of driving device that adopts fork in conjunction with epicyclic transmission mechanism, this device can convert the strength of people's pin or hand to drive torque effectively, the running of drive work mechanism can be applied to extensive fields such as manually driven bicycle, ship, agricultural machinery.

Technical scheme of the present invention is to drive epicyclic transmission mechanism by swing-lever ratchet mechanism, and adopts the third wheel return mechanism to make the fork return.

This driving device mainly comprises few tooth difference or cycloidal-pin wheel planet gear speeder, swing-lever ratchet mechanism and the reverse return mechanism of third wheel.The fewer differential teeth planetary speed increaser is to be made of inner gear, satellite gear, pinion carrier, pinion carrier bearing pin, eccentric shaft, ball, bearing, back-up ring, nut etc.Eccentric shaft is contained in the bearing hole of pinion carrier by bearing.Inner gear is between two pinion carriers, there is ball grooves the pinion carrier inboard, also there is ball grooves the inner gear both sides, ball is contained in the groove, pass pin-and-hole on the pinion carrier and the hole on the satellite gear with bearing pin, connect two pinion carriers, the bearing pin two ends are fixed with nut, make ball obtain suitable gap, guarantee that the pinion carrier energy freely rotate.Inner gear is fixed on the frame.Satellite gear is contained in eccentric shaft one end and between two pinion carriers, and satellite gear and inner gear engagement also can be revolved round the sun, but also rotation itself.Like this, just obtain an inner gear and fix, pinion carrier input, the fewer differential teeth planetary speed increaser of eccentric shaft output.Fork is with coming transferring power with ratchet device between the planet speed increaser, ratchet device is made of ratchet, ratchet etc., on the pinion carrier cylindrical ratchet is arranged, the double ratchet of doing, fork one end is equipped with pedal or handle, and the other end is associated with a lasso, lasso is enclosed within the groove that forms between pinion carrier cylindrical shoulder and the inner gear side, there is groove in inner hole, lasso side, and ratchet is contained in the groove and with spring ratchet gently is pressed on the ratchet and puts in place, constitutes ratchet device.The third wheel return mechanism is made of third wheel, mistake wheel support, the little axle of third wheel and lasso face gear, third wheel is contained in the shape third wheel Support frame also free to rotate by the little axle of third wheel, door shape is crossed wheel support and is fixed on the inner gear cylindrical, the lasso inboard processes one section gear, be used for meshing with third wheel, the gear of third wheel and two lasso inboards meshes simultaneously, form the reverse return mechanism of third wheel, its effect is when a fork swing, utilize the acting in opposition of third wheel to make power reverse and make another root fork backswing, realize the reverse and fork self-return of kinetic moment.There is positive stop on the inner gear cylindrical and lasso inboard, is used to limit the hunting range of fork.

The also available corresponding cycloidal-pin wheel transmission device of above-described little gear difference planetary driving mechanism replaces, and both are except that the profile of tooth difference, and principle and structure are just the same.

Driving device of the present invention because treadle is not done 360 degree rotations and transmitting ratio is very big, can adopt the method that increases treadle length under the prerequisite that does not reduce the output shaft rotating speed, improve the transmission force property of treadle, improves the labor-saving effect greatly.

Description of drawings:

The assembly drowing of figure one driving device of the present invention (A-A cutaway view)

The assembly drowing of figure two drivings device of the present invention (B-B cutaway view)

The planet gear speeder split figure of figure three drivings device of the present invention

The ratchet device of figure four drivings device of the present invention and third wheel return mechanism split figure

Figure five embodiment assembly drowings

Embodiment:

The bicycle transmission scheme of present embodiment is to drive the two teeth difference epicyclic transmission mechanism by swing-lever ratchet mechanism to come drive wheels, and adopts the third wheel return mechanism to make the swing return.

The driving device of this kind bicycle mainly comprises a two teeth difference planet gear speeder, swing-lever ratchet mechanism and third wheel return mechanism.Planet gear speeder is to be made of eccentric shaft 1, satellite gear 2, inner gear 7, pinion carrier 4 and 9, pinion carrier bearing pin 3, ball 5, bearing 11, back-up ring 16, nut 10.Eccentric shaft 1 is contained in by bearing 11 in the bearing hole of pinion carrier 4, and eccentric shaft one end is equipped with satellite gear.Inner gear 7 is between two pinion carriers, there is ball grooves pinion carrier 4 and 9 inboards, also there is ball grooves inner gear 7 both sides, ball 5 is contained in the groove, passes hole on pinion carrier 4,9 and the satellite gear 2 with bearing pin 3, connects two pinion carriers, the bearing pin two ends are fixed with nut, adjust the shoulder length of bearing pin 3, can make ball 5 obtain suitable gap, guarantee that pinion carrier 4,9 energy freely rotate.7 of inner geares are fixed on the vehicle frame.Satellite gear 2 is contained on the pinion carrier bearing pin 3 and between two pinion carriers 4 and 9, and satellite gear 2 and inner gear 7 engagements also can be around the revolution of inner gear line of centers, but also rotation itself.Like this, just obtain an inner gear and fix, the fewer differential teeth planetary speed increaser that satellite gear rotates.Fork 17 is with coming transferring power with ratchet device between the planet speed increaser, ratchet device is made of ratchet 4 and 9, ratchet 15, lasso 6 and 8 etc., on pinion carrier 4 and 9 cylindricals ratchet is arranged, the double ratchet of doing, fork 17 1 ends are equipped with the pedal handle, the other end is associated with lasso 6,8, lasso 6,8 is enclosed within the groove that forms between the side of the cylindrical shoulder of pinion carrier 4,9 and inner gear 7, there is groove in inner hole, lasso 6,8 sides, ratchet 15 is contained in the groove and with spring ratchet 15 gently is pressed on the ratchet 4,9 and puts in place, constitutes ratchet device.The third wheel return mechanism is by third wheel 13, cross wheel support 14, little axle 12 of third wheel and lasso gear 6,8 constitute, third wheel 13 is contained in a shape by the little axle 12 of third wheel and crosses in wheel support 14 frameworks also free to rotate, door shape is crossed on wheel support 14 fixed annuluss 7 cylindricals, lasso 6,8 inboards process one section face gear, be used for meshing with third wheel, third wheel 13 and two lassos 6, the face gear of 8 inboards meshes simultaneously, constitute the third wheel return mechanism, its effect is when a fork swing, utilize the acting in opposition of third wheel 13, make another root fork backswing, realize the reverse and fork self-return of moment.There is positive stop 18 inboard of lasso 6,8, is used to limit the hunting range of fork 17. Wheel hub 23,25 is installed on the axle 1 by two bearings 24, connect with ratchet device between the wheel hub coaxial 1, ratchet 22 is installed on the axle 1 by key 21, ratchet is contained in the groove of wheel hub 23 inner holes one side and with little spring ratchet is pressed on the ratchet 22, its objective is the effect that utilizes ratchet device, makes wheel needn't be with planetary mechanism to rotate together when sliding, improve sliding performance, the other end of axle 1 is installed in the bearing seat 19 by bearing 20, and bearing seat is fixed on the vehicle frame

The gear that above driving device equals 2 with modulus, pressure angle of graduated circle are 20 degree, and satellite gear is 46 teeth, and interior wheel is 48 teeth, and transmitting ratio equals 23,12 inches of wheels, and its speed of a motor vehicle is suitable with present 26 inches bicycles, but more laborsaving.

Claims (2)

1, a kind of manually driven driving device of using is characterized in that driving planetary gear mechanism by fork by ratchet device comes outputting power, and is realized the return of fork by the third wheel reversing-gear.

2, planetary gear mechanism as claimed in claim 1 is characterized in that being fixed by an inner gear, the pinion carrier input, and the few tooth difference or the cycloidal-pin wheel planet gear speeder of eccentric shaft output constitute.

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