CN2382645Y

CN2382645Y - Rod gear mechanism for man power cycle

Info

Publication number: CN2382645Y
Application number: CN 99216102
Authority: CN
Inventors: 王占发
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-14
Filing date: 1999-07-14
Publication date: 2000-06-14
Anticipated expiration: 2009-07-14

Abstract

The utility model discloses a rod gear mechanism for a man power bicycle, which is provided with a machine frame or a machine shell. Both ends of a fulcrum shaft are fixed at a front end of the machine frame or the machine shell, and straight shaft parts at both ends of a crank shaft are connected with the machine frame or the machine shell through bearings; front ends of two rods are respectively connected with foot pedals, middle parts are respectively and movably connected with the fulcrum shaft; rear ends of the two rods are respectively and movably connected with one end of each connecting rod with the number of two, the other end of each connecting rod with number of two is respectively connected with two bended shafts of the crank shaft, and one end of the crank shaft is connected with a wheel disk. Two rods can move to-and-fro to save space, compared with the existing lever moving in circle, can improve the stability and the comfort characteristic of the man power bicycle which can save labor.

Description

The rickshaw lever transmission mechanism

The utility model relates to a kind of lever transmission mechanism, is a kind of rickshaw lever transmission mechanism specifically.

Thereby the transmission device of existing rickshaw such as bicycle, three-wheel vehicle is a pedal drive lever does the realization of circular movement drive wheel disc, requires great effort, and cyclist's center of gravity is higher, and is uncomfortable.

The purpose of this utility model is to provide a kind of rickshaw lever transmission mechanism, makes rickshaw laborsaving comfortable.

The technical solution of the utility model is as follows:

This device organic frame or casing have the two ends of a fulcrum shaft to be fixed on the front end of frame or casing, have the d-axis part at its two ends of a bent axle to be connected with frame or casing by bearing; Have their front end of two levers to connect pedal respectively, the middle part flexibly connects with fulcrum shaft respectively, the movable respectively end that connects two connecting rods in the rear end of two levers, and the other end of two connecting rods connects two cambered axles of bent axle respectively, and an end of bent axle connects wheel disc.

Advantage of the present utility model is: 1, two levers are reciprocating, save the space than the existing lever of making circular movement, and the center of gravity of going into by bike can reduce, and can add the back backrest, improves the stability and the traveling comfort of rickshaw.2, easy to operate, laborsaving, at the active wheel disc and the passive flywheel that use existing bicycle, and wheel disc is constant to the distance of flywheel, can laborsaving 2-3 times.

Fig. 1 is a birds-eye view of the present utility model;

Fig. 2 removes the front view of frame or casing for the utility model.

The utility model is described in further detail below in conjunction with accompanying drawing.

Can see by Fig. 1, Fig. 2, this device organic frame (15), the two ends that a fulcrum shaft (3) arranged are fixed on the front end of frame with nut (6), have the d-axis part (17) at its two ends of a bent axle (8) to be connected with frame by bearing (7); There are two levers (1), (2) their front end to connect pedal respectively, the middle part flexibly connects with fulcrum shaft (3) respectively, (5) be the lever locating bush, (4) be the lever lining, the rear end of two levers (1), (2) connects an end of two connecting rods (16), (10) respectively with connecting rod bush (12), pin (11), the other end of two connecting rods (16), (10) connects two cambered axles (18) of bent axle respectively, and (9) are connecting rod bush, (13) be the connecting rod locating bush, an end (17) of bent axle connects wheel disc.(14) be the bent axle coupling nut.

The front end of lever (1) is applied power to the front lower place, because the effect of fulcrum, the rear end drivening rod (16) of lever (1) applies rotational force to a cambered axle of bent axle (8), makes its rotation half cycle; The front end of lever this moment (1) touches the bottom, because interlock, the front end of lever (2) peaks, and to the front end application of force of lever (2), in like manner lever (2) makes the crankshaft revolution half cycle by connecting rod (10) again; So hocket, bent axle can rotate continuously, and power is flowed to wheel disc.

About rotation and directed problem, can be by the size decision of distance between fulcrum shaft attachment point and the bent axle attachment point and connecting rod.

Claims

1, a kind of rickshaw lever transmission mechanism, it is characterized in that: its organic frame or casing (15), there are the two ends of a fulcrum shaft (3) to be fixed on the front end of frame or casing, have the d-axis part (17) at its two ends of a bent axle (8) to be connected with frame or casing (15) by bearing (7); There are two levers (1), (2) their front end to connect pedal respectively, the middle part flexibly connects with fulcrum shaft respectively, the movable respectively end that connects two connecting rods (16), (10) in the rear end of two levers, the other end of two connecting rods connects two cambered axles (18) of bent axle respectively, and an end of bent axle connects wheel disc.