CN2153515Y

CN2153515Y - Transmission for bicycle or tricycle

Info

Publication number: CN2153515Y
Application number: CN93204127U
Authority: CN
Inventors: 陈文韬; 汪福沾
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-01
Filing date: 1993-03-01
Publication date: 1994-01-19
Anticipated expiration: 2003-03-01

Abstract

The utility model makes use of the principle of the gear drive and the lever. The existing bicycle and man-power tricycle in market are additionally provided with a drive mechanism which enlarges the speed ratio and the radius of a force arm and which improves vehicle speed and saves labor. The structure adopts the drive mechanism of a ratchet gear and a pin gear, a lever mechanism, a reversing mechanism and a guide mechanism. Thus, the novel, high-speed and labor-saving bicycle and tricycle can constantly and harmoniously work.

Description

Transmission for bicycle or tricycle

The utility model belongs to the People-Powered Vehicle field.

Bicycle on the existing market comprises mountain bike, manual tricycle, though be a kind of traditional, the vehicle easily, its transmission speed ratio is little, and arm of force radius is little, and the speed of a motor vehicle is low, effort, unsuitable as long distance, the fast speed vehicle.

The purpose of the present utility model is to overcome above-mentioned defective of the prior art, utilizes gear transmission and lever principle, proposes a kind of large speed ratio, the high speed labour-saving manpower carrying tool of big arm of force radius.

Be to improve speed ratio, the utility model is in the both sides of existing bicycle or three-wheel vehicle axis, the ratchet-gear wheel that respectively to set up a radius be R1, and ring is connected with axle and dish in the ratchet-gear wheel, drives axis when rotating in the clockwise direction and coils rotation, and anticlockwise direction does not then drive.Ratchet-gear wheel is by the tooth pendulum engaged transmission of rotating around the tooth balance staff.The tooth balance staff is fixed on the correct position of cycle frame, and as coaxial with bicycle rear axle, the engagement radius of tooth pendulum is R3, and it has increased speed ratio much larger than ratchet-gear wheel engagement radius R 1, and this quickens for one-level, and the tooth pendulum is driven by the bigger tooth fork of the arm of force in the leverage.Tooth fork and tooth pendulum link together, and dish drives flywheel by chain, and this quickens for secondary, and car is advanced.For making both sides tooth pendulum coordinate continuous working, the utility model is provided with a direction reverser, and direction reverser is made up of crank arm bar and axle, moves in the chute that the two ends of the bar of cranking arm can be provided with on the tooth fork of the left and right sides respectively.When right tooth fork changes the φ angle downwards, when arriving extreme lower position,, make left tooth fork upwards change the φ angle by direction reverser, arrive the extreme higher position.For making the engagement of ratchet-gear wheel and tooth pendulum normal, be provided with guiding mechanism.Guiding mechanism is made up of guide piece that is arranged on described each ratchet-gear wheel both sides or guide ring.

Through the derivation of equation, be not difficult to draw following result

(N5 is new)/(N5 is existing)=(R3)/(R1) (1)

(F6 is new)/(F7 is existing)=(R7)/(R6) (2)

Here new, the N5 of N5 now is the utility model vehicle wheel rotational speed and existing cycle wheel rotating speed, and F6 is new, F7 now steps on stressed and existing prop stand for bicycle for the utility model pin and steps on stressed.R1, R3 are ratchet-gear wheel and tooth pendulum engagement radius, and R6 is a tooth fork arm of force radius, and R7 is existing bicycle arm of force radius.

By Fig. 1,2 described embodiment, the speed of a motor vehicle is 6 times of the existing bicycle speed of a motor vehicle, and power only is 1/4.The utility model has reached the raising speed of a motor vehicle and labour-saving purpose.

Fig. 1 is a partial top view of the present utility model.

Fig. 2 is a partial side view.

Fig. 3 is the partial side view of Double persons pedal three-wheel vehicle of the present utility model

Fig. 4 is the three-wheel vehicle partial top view

In conjunction with Fig. 1, Fig. 2 operation principle of the present utility model and process are described:

Transmission mechanism is to set up at the ratchet-gear wheel (3,4) of bicycle or tricycle axis both sides and tooth pendulum (1,2) to form, and ring is with axis 9 be connected 8 and be connected in the ratchet-gear wheel, and ratchet-gear wheel is by putting engaged transmission around the tooth of tooth balance staff 7 rotations. Tooth balance staff (7) is positioned at the correct position of vehicle frame (12), as coaxial with bicycle rear axle (18). Drive axis (9) and dish (8) when ratchet-gear wheel rotates clockwise, counterclockwise then do not drive. The tooth pendulum is driven by tooth fork (13,14) fixed thereon. For making transmission mechanism coordinate continuous operation, be provided with changement, changement is made up of crank arm (5) and reversing shaft (6), and the crank arm two ends can be respectively mobile in the chute that the left and right tooth fork arranges. (17) for being arranged on the guiding mechanism of ratchet-gear wheel both sides, it is made up of prerotation vane or guide ring, and the diameter of prerotation vane is greater than the external diameter of ratchet-gear wheel, ring compresses in interior ring and the ratchet-gear wheel, in the clip slot of described two prerotation vanes or guide ring formation, ratchet-gear wheel and tooth pendulum engaged transmission can not come off.

Its course of work is as follows:

1, right crus of diaphragm pedal (16), tooth pendulum (2) rotates around tooth balance staff (7), drives right ratchet-gear wheel (4) and dish (8), rotates around axis (9), by chain (11) car is advanced.

2, when right tooth fork moves downward, rotate around reversing shaft (6) by reversing bar (5), the other end of turning-bar drives left tooth fork (13) upwards, and left ratchet-gear wheel this moment (3) does not drive axis (9) and dish (8) rotates.

3, when right tooth fork (14) turns to the φ angle downwards, arrive extreme lower position, left tooth fork (13) upwards turns to the φ angle and reaches the extreme higher position, then, left foot pedal (15), left tooth fork (13) is stepped on, and left ratchet-gear wheel (3) drives axis (9) and dish (8) rotates, and by chain (11) car is advanced. Reversing bar this moment (5) upwards turns to right tooth fork, does not drive axis (9) and dish (8). Circulation is advanced car and so forth.

Embodiment

R4, R5, R2, R7 are identical with present bicycle or three-wheel vehicle among Fig. 1, and wherein R7 contrasts for convenience of explanation and illustrates.In fact there is not R7 in the utility model.

R1≤R4, R3, R6, φ angle and various sizes finally determine in trial-production, with compact conformation, easy to use be that principle is selected.

The technological design of axle, bearing and ratchet-gear wheel and tooth pendulum.Processing, installation all do not have a technical difficult problem.It all is feasible that the manufacturing of steering hardware and guiding mechanism is installed.Material and heat treatment method also can be selected.

Claims

1, a kind of driving device that is used for bicycle or three-wheel vehicle is characterized in that this device has and can increase speed ratio and labour-saving gear one rod gear; This device is arranged on the axis place of bicycle or three-wheel vehicle, and it is included in described axis both sides the ratchet-gear wheel that a pair of radius is R1 (3,4) is set; The interior ring of described ratchet-gear wheel is connected with axis (9) dish (8); Described ratchet-gear wheel is by tooth pendulum (1, the 2) engaged transmission of rotating around tooth balance staff (7), and this tooth balance staff is positioned at the correct position of vehicle frame; Described tooth pendulum engagement radius is R3, and it is much larger than ratchet-gear wheel engagement radius R 1; Tooth pendulum (1,2) is driven by the bigger tooth fork of the arm of force (13,14), and tooth fork and tooth pendulum link together, and dish (8) drives flywheel (10) by chain; The utility model also is provided with one and can makes described both sides tooth put the direction reverser of continuous co-ordination; For making the engagement of ratchet-gear wheel and tooth pendulum normal, be provided with guiding mechanism in described each ratchet-gear wheel both sides.

2, driving device according to claim 1, it is characterized in that described direction reverser comprise described reversing shaft (6) and be fixed in one about the commutation bar (5) of cranking arm, crank arm length of bar of commutation can make the angle amplitude of described left and right tooth fork swing identical about it; Move in the groove on the tooth fork respectively the crank arm end of bar of commutation about described.

3, driving device according to claim 1, it is characterized in that described guiding mechanism is guide piece or the guide ring that is provided with in described each ratchet-gear wheel both sides, its diameter is greater than described ratchet-gear wheel external diameter, form a clip slot between two guide pieces, its width is slightly larger than the thickness of described ratchet-gear wheel and tooth pendulum, tooth pendulum in this clip slot with the ratchet-gear wheel gear motion, can not come off.