CN2446052Y

CN2446052Y - Bicycle gear accelerator

Info

Publication number: CN2446052Y
Application number: CN 00249120
Authority: CN
Inventors: 吴志勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-28
Filing date: 2000-08-28
Publication date: 2001-09-05
Anticipated expiration: 2010-08-28

Abstract

The utility model relates to a bicycle gear accelerator. The utility model is characterized in that a driving gear and a final-stage driven gear which are used for acceleration are arranged on a main bicycle shaft which is lengthened; a rear side frame is provided with a subsidiary shaft and is movably sheathed with two middle gears which can be rotated synchronously, wherein the middle gear with minor diameter is engaged with the driving gear with large diameter sheathed fixedly on the main bicycle shaft. The middle gear with large diameter is engaged with the final-stage driven gear sheathed movably on the main bicycle shaft. A large chain wheel is movably sheathed on the main bicycle shaft, and the final-stage driven gear is movably clamped with the large chain wheel through a clamping pin and can be used for driving the large chain wheel to rotate synchronously. In addition, the utility model can raise substantially bicycle speed on a flat road by more than 50 percents.

Description

The bicycle gears acceleration mechanism

The utility model belongs to the improvement technology of bicycle shift transmission device, particularly a kind of bicycle gears acceleration mechanism.

Its speed change of existing bicycle or acceleration mechanism have two kinds of designs.A kind of is to have only hinge wheel to cooperate the power transmission acceleration mechanism (for a kind of modal simple mechanism) of minor sprocket, another kind is the transmission device that a plurality of speed-changing chains are set on hind axle, and on handgrip, is furnished with gearshift, this is a kind of comparatively senior and general-duty speed-changing mechanism, can move with fast speeds when making bicycle on level road, when uphill road, though slow down through shifted running velocity, more laborsaving.But can't be when above-mentioned technology drives on smooth road surface with bigger amplitude speed-raising operation.

The purpose of this utility model is a kind of bicycle gears acceleration mechanism of design, makes and can improve running velocity greatly when driving on smooth road surface.

The utility model is realized with following technical scheme: it comprises front-wheel, trailing wheel, handgrip (yaw), vehicle frame (spider), be located at hinge wheel and foot-operated formations such as (plates) on car owner's axle, it is characterized in that on car owner's axle of lengthening, being equipped with raising speed driving gear and final stage driven gear, on the frame of back (wheel) limit of vehicle frame, be provided with one from axle, be connected to two intermediate gears (group) that are mutually permanently connected and can rotate synchronously at movable sleeve from axle, the intermediate gear of its medium-small diameter is meshed with fixedly sleeved major diameter driving gear on car owner's axle, large diameter intermediate gear is meshed with final stage driven gear on being actively socketed on main shaft, described hinge wheel also is to be actively socketed on car owner's axle, the final stage driven gear that is actively socketed on car owner's axle also can drive the rotation synchronously of hinge wheel do by bayonet lock and hinge wheel activity clamping, pass through car owner's axle successively respectively from the power of riding on (plate) in the time of by bike, the major diameter driving gear, the minor diameter intermediate gear, the major diameter intermediate gear, the final stage driven gear passes to hinge wheel, moves to preacceleration (raising speed) thereby hinge wheel drives trailing wheel with transmission of power to the minor sprocket on the hind axle by chain again.

Compared with the prior art, the utility model is on smooth road surface by bike the time, the speed of a motor vehicle can increase substantially, running velocity can improve more than 50%, when specific design, can design the transmitting ratio of variable gear according to the situation of different user, the speed after it quickens can promptly per hour can reach the 30-40 kilometer near motor or light cavalry in the incity normal speed sometimes.

Following accompanying drawing is a kind of embodiment of the present utility model:

Fig. 1 is that the utility model utilizes the scheme drawing of variable gear as the mechanism of driving up on main shaft.

Wherein: 1 is vehicle frame (spider), and 2 are foot-operated (plate), and 3 is car owner's axle, 4 is back frame (the limit frame of dress trailing wheel), 5 is hinge wheel, and 6 is plate washer, and 7 is the major diameter driving gear, 8 is from axle, 9 be the minor diameter intermediate gear (as with driving gear ingear flower wheel), 10 is major diameter intermediate gear (can with minor diameter intermediate gear disjunctor make), 11 are grade driven gear not, 12 is bayonet lock, and 13 is pressure spring.

With reference to accompanying drawing as can be known, the utility model bayonet lock set on the final stage driven gear 11 12 be be opened in hinge wheel 5 on pin-and-hole movable cooperates clamping to do to rotate synchronously to drive hinge wheel, on car owner's axle 3 in hinge wheel 5 outsides, also be provided with a pressure spring 13 with smooth and easy with assurance acceleration transmission of power in service of effective clamping (engaging) of promoting bayonet lock 12 and pin-and-hole.

Claims

1, a kind of bicycle gears acceleration mechanism, it comprises front-wheel, trailing wheel, handgrip, vehicle frame (1), the hinge wheel (5) and foot-operated (2) that are located on car owner's axle (3) constitute, it is characterized in that on car owner's axle (3) of lengthening, being equipped with raising speed driving gear (7) and final stage driven gear (11), on the back frame (4) of vehicle frame (1), be provided with one from axle (8), be connected to two intermediate gears that are mutually permanently connected and can rotate synchronously at movable sleeve from axle, the intermediate gear of its medium-small diameter (9) is meshed with fixedly sleeved major diameter driving gear (7) on car owner's axle, large diameter intermediate gear (10) is meshed with final stage driven gear (11) on being actively socketed on car owner's axle (3), described hinge wheel (5) also is to be actively socketed on car owner's axle, final stage driven gear (11) also can drive hinge wheel by bayonet lock (12) and hinge wheel (5) activity clamping and do to rotate synchronously, pass through car owner's axle successively respectively from the power of riding on (2) in the time of by bike, the major diameter driving gear, the minor diameter intermediate gear, the major diameter intermediate gear, the final stage driven gear passes to hinge wheel, moves to preacceleration thereby hinge wheel drives trailing wheel with transmission of power to the minor sprocket on the hind axle by chain again.

2, bicycle gears acceleration mechanism according to claim 1, it is characterized in that going up set bayonet lock (12) at final stage driven gear (11), be be opened in hinge wheel (5) on pin-and-hole movable cooperates clamping to do to rotate synchronously to drive hinge wheel, on the car owner's axle (3) outside the hinge wheel, also be provided with a pressure spring (13).