CN2284728Y

CN2284728Y - Crank stepless booster for manpower vehicle

Info

Publication number: CN2284728Y
Application number: CN 96208560
Authority: CN
Inventors: 张力壬
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-18
Filing date: 1996-04-18
Publication date: 1998-06-24
Anticipated expiration: 2006-04-18

Abstract

The utility model relates to a crank stepless booster for a manpower vehicle. The utility model comprises a driving gear 1, ratchet wheels, friction plates, friction plate press plates, and nuts. The utility model is characterized in that the driving gear is arranged on the right side of a manpower vehicle, the diameter of the driving gear is equal to the diameter of a driven gear, and one end of each crank is integrated with the driving gear; cranks on the left and the right sides are respectively divided into two sections, and one ratchet wheel are arranged between every two sections; the friction plates, the friction plate press plates, and the nuts make the inner and the outer rings of each ratchet wheel have tightening force. When a person with a manpower vehicle makes a grade climbing, the two-section cranks are changed to have a certain included angle, overcoming the phenomenon that the driving moment is zero, and the cranks are easily driven to rotate by the condition that the gear ratio of the driving gear and the driven gear is increased. The utility model is suitable for bicycles and tricycles.

Description

The stepless assistor of rickshaw crank

The utility model relates to the rickshaw device, particularly a kind of stepless assistor of rickshaw crank with laborsaving function.

Many about rickshaw work-saving device report, is that some work-saving device are set up on the basis by Chinese patent 2148023Y disclosed " the afterburning latch device of bicycle with the laborsaving function of climbing " with the racing car structure, what it constituted back axle is provided with a pivot position in abutting connection with passive tooth group place, axle pivot position is connected with fluted disc, afterburning latch device is by greatly, the opposite side that small tooth plate is positioned at passive fluted disc group is homonymy and is installed in back axle and crank, greatly, be engaged with afterburning chain on the small tooth plate, chain engages fluted disc during climbing, make fluted disc idle running, then the passive tooth group is not rotated, and with greatly, small tooth plate drives, by greatly, the ratio of number of teeth of small tooth plate can drive crank greatly very effortlessly, obvious this work-saving device, structure are complicated; The main gear number of teeth of and for example existing ordinary bicycle is big more than ring gear, and drive ratio is effort, particularly when about two pedal positions when being in vertical level, moment is zero, makes the person of riding step on more sense and requires great effort.

The purpose of this utility model provides a kind of stepless assistor of rickshaw crank with the laborsaving function of climbing, and soon initiatively the number of teeth reduces, and crank is divided into two joints, and the middle ratchet device that connects can change angle between the pedal of the left and right sides at any time, can make driving laborsaving.

The technical solution of the utility model is as follows:

The utility model comprises vehicle frame, handlebar, wheel, wheel shaft, axis, gear, chain, step, crank and cushion, it is characterized in that round directly being made as with ring gear circle footpath of rickshaw right side driving gear equated; Crank is set at two joints, and wherein an end and the driving tooth of a joint join together, and the other end and ratchet inner ring join together; One end and the ratchet outer ring of another joint crank join together, and the other end connects with the tread plate axle; Establish Friction disk between the inside and outside circle of ratchet, and necessarily pressed, to increase friction, make between its ratchet Internal and external cycle and could freely rotate after certain thrust is arranged, the rickshaw left side is no driving gear with unique difference on right side.

The utility model has the advantages that by means of the driving gear number of teeth and reduce, promptly initiatively the number of teeth and passive number of teeth ratio increase, and make body moving laborsaving, on the other hand by means of escapement, when walking to go up a slope, can be any angle (promptly stepless) between the change two joint cranks, eliminate the dead angle, increased moment, driven the bicycle person is laborsaving thereby make.The utility model just changes the structure at crank position, and other position structures of rickshaw do not change, and obviously, the utlity model has simple in structurely, and cost hangs down characteristics.

Description of drawings:

Fig. 1 is the structural representation of the stepless assistor in the utility model right side.

Fig. 2 is that the A of Fig. 1 is to the semi-sictional view structural representation.

Fig. 3 is the structural representation of the stepless assistor in the utility model left side.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 represents the stepless assistor in the utility model right side, its formation is provided with a driving gear 1 that joins together with crank 2, its gear circle footpath equates with the round footpath of the ring gear on the rickshaw rear axle, be that the number of teeth equates, be made as 20 teeth, than initiatively 48 the greatly minimizings of the number of teeth of conventional bicycle, the other end of crank 2 and ratchet inner ring 3 join together; One end and the ratchet outer ring 5 of another joint crank 4 join together, and the other end 14 connects with the step axle; See Fig. 2, an if friction bobbin 13, its end and crank 2 or ratchet inner ring 3 join together, the other end is arranged with friction lining 6, friction lining pressing plate 7, and with panel nut 8 to a certain degree fastening in addition, a step was stepped on the relative position that pin in passive step can not be easy to the Internal and external cycle of rotating ratchet when fastening degree should meet by bike when the active drive car advances.

Fig. 3 represents the structural representation of the stepless assistor in rickshaw left side, is made of crank 9,10, ratchet (inner ring 11, outer ring 12) friction lining, friction lining pressing plate and panel nut, only is that with the difference on right side this side does not have driving gear 1.

The length of two joint crank sums and the crank of existing bicycle or tricycle etc. Long.

The utility model is suitable for bicycle and tricycle, particularly old bicycle Or the crank of tricycle is replaced and is got final product.

Claims

1. the stepless assistor of rickshaw crank comprises vehicle frame, handlebar, wheel, wheel shaft, axis, gear, chain, step, crank and cushion, it is characterized in that the circle footpath of rickshaw right side driving gear 1 equates with ring gear circle footpath; Crank is set at two joints, and wherein an end and the driving gear 1 of a joint 2 join together, and the other end and ratchet inner ring 3 join together; One end and the ratchet outer ring 5 of another joint crank 4 join together, and the other end 14 connects with the tread plate axle; If friction bobbin 13, its end and crank or ratchet inner ring join together, the sheathed fiber crops wipings sheet 6 of the other end, friction lining pressing plate 7, and with in addition to a certain degree fastening of panel nut 8.

2. by the stepless assistor of the described rickshaw crank of claim 1, it is characterized in that the stepless augmenter in rickshaw left side is made of crank 9,10, ratchet, friction bobbin, friction lining, friction lining pressing plate and panel nut.