CN2165086Y

CN2165086Y - Accelerator for bicycle

Info

Publication number: CN2165086Y
Application number: CN 93218324
Authority: CN
Inventors: 肖运明
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-14
Filing date: 1993-07-14
Publication date: 1994-05-18
Anticipated expiration: 2003-07-14

Abstract

The utility model relates to a manpowered accelerator, particularly an accelerator for accelerating bicycles. One side of a middle shaft of the bicycle is simultaneously provided with two parallel fly wheels, an upper rack frame of an upper inner edge rack engaged with a gear of one fly wheel and a lower rack frame of a lower inner edge rack engaged with the gear of the other fly wheel, wherein, an outer ring of each fly wheel is provided with a gear, an inner ring is provided with ratchet wheel teeth, and a central sleeve is provided with a ratchet pawl and a tension spring which are matched with the ratchet wheel teeth. The upper ends of the two rack frames are provided with hand cranks pivoted on pin shafts of a tripod of the bicycle. Consequently, the running of the bicycle is accelerated by hand, and the utility model has the advantages of simple structure, convenient installation and low cost.

Description

Accelerator for bicycle

The utility model relates to a kind of manpower accelerator, especially the accelerator that bicycle is quickened.

At present, the accelerator of bicycle (bicycle, trishaw) is to change the diameter ratio of axis upper sprocket wheel and rear axle upper sprocket wheel and rear axle upper sprocket wheel (flywheel), to that is to say converter speed ratio, obtain accelerated movement, but must increase pedal power, at pedal power one regularly, value of service is minimum.

In view of this, the purpose of this utility model is that a kind of novel bicycle accelerator will be provided, and can quicken the middle rotation of car with dynamo power in the pedal car, and can directly be contained on the existing pedal car (as: bicycle, trishaw), and is simple in structure.

The purpose of this utility model is achieved in that it is that gear, inner ring are to have the ratchet that matches with hook tooth and two parallel flywheels of extension spring on hook tooth and the center that the outer ring is set simultaneously on bicycle middle shaft one side, be provided with the upper rack frame of the last inner edge tooth bar that is meshed with the gear of a flywheel, be provided with the following tooth bar frame of the following inner edge tooth bar that is meshed with the gear of another flywheel, be provided with the hand crank on the bearing pin that is articulated in bicycle tripod in two tooth bar frames upper end.

Owing to adopt such scheme, can quicken travelling of bicycle with hand.Simple in structure, and only need reequip the back a little at existing bicycle and install, easy for installation, with low cost.

Below in conjunction with drawings and Examples the utility model is further specified.

Among the figure: 1, flywheel, 11 gears, 12, hook tooth, 13, center, 14, ratchet, 15, extension spring, 2, the upper rack frame, 21, go up the inner edge tooth bar, 3, tooth bar frame down, 31, following inner edge tooth bar, 4, hand crank, 5, bicycle middle shaft, 6, the bearing pin of bicycle tripod.

Flywheel 1 its outer ring is that gear 11, the inner ring of involute is to articulate ratchet 14 and the extension spring 15 that matches with hook tooth 12 on hook tooth 12, the center 14, and center 13 is connected with bicycle middle shaft 5 with negative thread, the structure of this flywheel is (existing bicycle is a sprocket wheel) except that outer ring gear 11, remaining part and annexation are identical with existing bicycle freewheel, so do not give unnecessary details.This two flywheel 1 is to be arranged on the bicycle tripod left side abreast.

Upper rack frame 2 is an inverted trapezoidal frame, the on top inboard last inner edge tooth bar 21 that is meshed with the gear 11 of a flywheel 1 that is provided with.

Following tooth bar frame 3 is a trapezoidal frame, is provided with the following inner edge tooth bar 31 that is meshed with the gear 11 of a flywheel 1 in following inboard.

Hand crank 4 connects the upper end of two tooth bar frames 2,3 with the lower end, middlely is articulated on the bearing pin 6 of bicycle tripod with the hole, and there is handle the upper end, for hand pendulum operation.

The operating process of present embodiment:

Usually bicycle inhour treadmill travels, hand crank 4 cws shake (pressing figure upward arrow A direction), upper rack frame 2 is swung (pressing figure upward arrow B direction) forward, phase gear 11 anticlockwise direction that promote a flywheel 1 rotate (pressing figure upward arrow C direction), hook tooth 12 promotes ratchet 14, center 13, make also inhour rotation of bicycle middle shaft 5, promptly give it the gun; Descend simultaneously also swing (pressing figure upward arrow B direction) forward of tooth bar frame 3, wheel 11 clockwise directions that are meshed that promote another flywheel 1 rotate (pressing figure upward arrow D direction), hook tooth 12 can not promote ratchet 14, and ratchet 14 skids under the effect of extension spring 15, and bicycle middle shaft 5 does not rotate.When hand crank 4 inhours were shaken, it moved with above-mentioned opposite, and following tooth bar frame 3 promotes another gear 1, and bicycle middle shaft 5 inhours are rotated, and promptly gave it the gun; Upper rack frame 2 can not promote bicycle middle shaft 5 and rotate (ratchet 14 skids).Therefore, hand crank shakes along inhour, and acceleration bicycle axis 5 inhours are rotated continuously.

Claims

1, a kind of bicycle accelerator, it is characterized in that: the outer ring is set simultaneously is gear, inner ring be on bicycle middle shaft one side and have the ratchet that matches with hook tooth and two parallel flywheels of extension spring on hook tooth and the center, be provided with the upper rack frame of the last inner edge tooth bar that is meshed with the gear of a flywheel, be provided with the following tooth bar frame of the following inner edge tooth bar that is meshed with the gear of another flywheel, be provided with the hand crank on the bearing pin that is articulated in bicycle tripod in two tooth bar frames upper end.