CN201842214U

CN201842214U - Bicycle transmission mechanism

Info

Publication number: CN201842214U
Application number: CN2010205078207U
Authority: CN
Inventors: 林伟鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-28
Filing date: 2010-08-28
Publication date: 2011-05-25
Anticipated expiration: 2020-08-28

Abstract

The utility model relates to a bicycle transmission mechanism, which at least comprises a rear wheel carrier and a rear wheel which is arranged on the U-shaped rear wheel carrier through a shaft, and is characterized in that: the end of the rear wheel carrier is respectively hinged with one ends of two connection rods, and the other ends of the connection rods are provided with a pedal; and the rear wheel is arranged on the middle part of the rear wheel carrier, and the rear wheel is driven in the reciprocating process by adopting the hinge point of the connection rods and the rear wheel carrier as a center. Since the pedal makes linear reciprocating movement during the moving process, compared with the prior art that the pedal makes the circumferential movement, rotation amplitude of each joint of legs of a rider can be greatly reduced, and the body health and long-distance riding can be realized.

Description

A kind of transmission mechanism of bicycle

Technical field

The utility model relates to bike tech, relates in particular to the drive technology of bicycle.

Background technology

At present, bicycle mostly is to use chain and gear matched to transmit power, and its shortcoming is the clothing that the lubricating oil on gear and the chain pollutes the bicyclist easily; And have bicycle dismounting inconvenience when breaking down want of repair of chain cover; In addition, the bicyclist need step on pedal and move in a circle when riding, and when riding at a distance, it is more greatly damage that bicyclist's shank is closed the festival-gathering generation.

Summary of the invention

The purpose of this utility model is to propose a kind of transmission mechanism of bicycle that need not chain or gear cluster transmission, solves the deficiency that prior art exists.

In order to realize the purpose of the utility model, adopt following technology to be achieved: to comprise rear wheel frame at least and be arranged on trailing wheel on the U-shaped rear wheel frame by axle, it is characterized in that: described rear wheel frame end is hinged with two connecting rod one ends respectively, and the connecting rod other end is provided with pedal; Described trailing wheel is arranged on rear wheel frame middle part, and described trailing wheel is to be to drive in the crank motion process of center by two connecting rods at the hinge-point with connecting rod and rear wheel frame.

As preferably: the center of described trailing wheel is embedded with ratchet, and the inner ring of ratchet is sleeved on the axle middle part; The two ends symmetry of ratchet is set with bearing on the axle, and the outer ring of bearing is installed on the bearing seat at rear wheel frame middle part; The tip of the axis is symmetrical arranged two forks.

As preferably: described fork is fixed on the axle by screw or latch by axle two ends through hole radially, and the length direction of fork is vertical mutually with the length direction of axle, and two forks are that axis with axle is that the center is symmetrically arranged; The other end of fork is provided with the axially pulley vertical with connecting rod, and connecting rod rest is located on the pulley.

As preferably: described axle is provided with the shaft shoulder that is used for positioning ratchet wheel, bearing and fork; Described ratchet is connected with trailing wheel with axle respectively by screw thread or key.

Compared with prior art, the beneficial effects of the utility model are: trailing wheel is to be to drive in the crank motion process of center by two connecting rods at the hinge-point with connecting rod and rear wheel frame, it is the pedal crank motion of doing in the journey near straight line that moves past on the throne, need step on pedal with prior art moves in a circle and compares, the rotation amplitude in each joint of bicyclist's shank just reduces greatly, is more conducive to the health of health and rides at a distance.

Description of drawings

Fig. 1 is integral structure figure of the present utility model.

Fig. 2 is the exploded view with each parts of axle bonded assembly.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is made a detailed explanation.

With reference to the accompanying drawings 1, rear wheel frame 3 ends are hinged with two connecting rod 2 one ends respectively, and connecting rod 2 other ends are provided with pedal 1; Trailing wheel 4 is arranged on rear wheel frame 3 middle parts, and described trailing wheel 4 is to be to drive in the crank motion process of center by two connecting rods 2 at the hinge-point with connecting rod 2 and rear wheel frame 3.

With reference to the accompanying drawings 2, the center of trailing wheel 4 is embedded with ratchet 10, and the inner ring of ratchet 10 is sleeved on axle 6 middle parts; The two ends symmetry of ratchet 10 is set with bearing 7 on the axle 6, and the outer ring of bearing 7 is installed on the bearing seat 5 at rear wheel frame 3 middle parts; The end symmetrical of axle 6 is provided with two forks 8; Fork 8 is fixed on the axle 6 by screw or latch by axle 6 two ends through hole 61 radially, and the length direction of fork 8 is orthogonal with the length direction of axle, and two forks 8 are that axis with axle 6 is that the center is symmetrically arranged; The other end of fork 8 is provided with axially the pulley 9 vertical with connecting rod 2, and connecting rod 2 is erected on the pulley 9.Axle 6 is provided with the shaft shoulder that is used for positioning ratchet wheel 10, bearing 7 and fork 8; Described ratchet 10 is connected with trailing wheel 4 with axle 6 respectively by screw thread or key.

When the utility model is in state shown in the accompanying drawing 1, after stepping on that higher pedal 1 of position downwards, just drive pulley 9 below motion left with pedal 1 bonded assembly connecting rod 2, then driving fork 8 is that the center rotates counterclockwise with the axis of axle 6, promptly drive axle 6, rotate counterclockwise thereby drive trailing wheel 4, when connecting rod 2 moves to when vertical with fork 8 length directions, then step on another pedal 1 and drive the corresponding fork 8 drive trailing wheels 4 of other end and do and rotate counterclockwise.Only need constantly to repeat above-mentioned steps, can drive car load and push ahead.

The effect of described ratchet 10 is when not stepping on pedal 1, and pedal 1 can the upper and lower displacement thereupon because of the rotation of trailing wheel 4, and ratchet 10 functions of using with the prior art bicycle are consistent.

Described pulley 9 is hinged with fork 8, and pulley 9 is close to connecting rod 2 and is rolled back and forth in connecting rod 2 moving process, and its effect is that the cliding friction between connecting rod 2 and the fork 8 is become friction of rolling, reduces frictional loss.

To the back wheel diameter is 24 inches bicycle, desirable 90 centimeters of connecting rod 2 length, pedal 1 length is got 20 centimeters, and rear wheel frame 3 terminal distances to bearing seat 5 centers are 30 centimeters, the axial line distance of two pulleys 9 is 10 centimeters, and then the maximum displacement at pedal 1 middle part is about 35 centimeters.

Because pedal 1 is to be to move on the circumference in the center of circle with connecting rod 2 and rear wheel frame 3 hinge-points, when alternately stepping on pedal 1, pedal 1 is done the crank motion near straight line, need step on pedal with prior art moves in a circle and compares, the rotation amplitude in each joint of bicyclist's shank just reduces greatly, is more conducive to the health of health and rides at a distance.

In addition, connecting rod 2 can be an expansion link, like this, according to lever principle, by the length of suitable adjustment connecting rod 2, just can correspondingly adjust input torque, can satisfy different bicyclists' requirement.

Claims

1. transmission mechanism of bicycle, at least comprise rear wheel frame (3) and be arranged on trailing wheel (4) on the U-shaped rear wheel frame (3) by axle (6), it is characterized in that: described rear wheel frame (3) end is hinged with two connecting rods (2) one ends respectively, and connecting rod (2) other end is provided with pedal (1); Described trailing wheel (4) is arranged on rear wheel frame (3) middle part, and described trailing wheel (4) is to be to drive in the crank motion process of center by two connecting rods (2) at the hinge-point with connecting rod (2) and rear wheel frame (3).

2. a kind of transmission mechanism of bicycle as claimed in claim 1, it is characterized in that: the center of described trailing wheel (4) is embedded with ratchet (10), and the inner ring of ratchet (10) is sleeved on axle (6) middle part; The two ends symmetry that axle (6) is gone up ratchet (10) is set with bearing (7), and the outer ring of bearing (7) is installed on the bearing seat (5) at rear wheel frame (3) middle part; The end symmetrical of axle (6) is provided with two forks (8).

3. a kind of transmission mechanism of bicycle as claimed in claim 2, it is characterized in that: described fork (8) is fixed on the axle (6) by screw or latch by axle (6) two ends through hole (61) radially, the length direction of fork (8) is vertical mutually with the length direction of axle (6), and two forks (8) are that axis with axle (6) is that the center is symmetrically arranged; The other end of fork (8) is provided with the axially pulley (9) vertical with connecting rod (3), and connecting rod (3) is erected on the pulley (9).

4. one kind as claim 1 or 2 or 3 described a kind of transmission mechanism of bicycle, it is characterized in that: described axle (6) is provided with the shaft shoulder that is used for positioning ratchet wheel (10), bearing (7) and fork (8); Described ratchet (10) is connected with trailing wheel (4) with axle (6) respectively by screw thread or key.