CN2339490Y - Effort-saving drive device of bicycle and tricycle - Google Patents

Abstract

The utility model relates to an effort-saving drive device for bicycles and tricycles, which is installed between a middle shaft and a drive chain of a back shaft, wherein, chain wheels of the middle shaft are elliptical; a middle chain wheel device is arranged between the chain wheel of the middle shaft and a flywheel of the back shaft; both ends of a chain wheel shaft of the device are respectively sheathed with connecting plates; the connecting plates can slide in a sliding chute of a frame plate; the chain wheel of the middle shaft can drive a double chain wheel of the middle chain wheel device through a chain; the double chain wheel can driven the flywheel of the back shaft through a chain. The utility model has two modes of single chain wheel drive and double chain wheel drive when in use; when the double chain wheel drive in use, a long and a short shafts of two elliptical chain wheels are mutually staggered, forming a right angle. The chain wheel of the middle shaft of the utility model is equivalent to a fixed pulley, wherein, the middle chain wheel device is equivalent to a movable wheel; thereby, the effort-saving for riding and handiness of the bicycles and the tricycles can be realized.

Description

Bicycle, three-wheel vehicle labor-saving transmission mechanism

The utility model relates to the driving device of bicycle, three-wheel vehicle, a kind of specifically labor-saving transmission mechanism that is installed between axis chain wheel and the rear flywheel.

Bicycle, three-wheel vehicle are one of main transport facilitys of China both urban and rural residents, light, flexible, cheap with it, and can not resemble contaminated environment the automobile and extensive use is arranged, existing bicycle, three-wheel vehicle are to connect transmission axis chain wheel and rear flywheel with a ring chain, though simple structure is particularly relatively required great effort when climbing when riding.

The purpose of this utility model provides the labor-saving transmission mechanism of a kind of bicycle, three-wheel vehicle, utilizes the laborsaving principle of similar movable pulley fixed pulley combination, and it is laborsaving, brisk to realize riding.

The purpose of this utility model is achieved in that

A kind of bicycle, three-wheel vehicle labor-saving transmission mechanism are installed between axis and the rear axle messenger chain, and it is characterized in that: its structure comprises

Axis chain wheel ovalize, class ellipse:

One intermediate chain wheel mechanism, have and be loaded on coaxial duplicate sprocket piece, its sprocket shaft two ends respectively are set with connecting panel, described connecting panel has the slide plate that outwards is convexly equipped with, this slide plate stretches in the chute of frame plate, the length of this chute is greater than the length of slide plate, and described frame plate has left and right two and be connected to a general frame with transverse slat, and this general frame is fixedly installed on the vehicle frame of bicycle, three-wheel vehicle;

The driving chain of described axis chain wheel is meshed with a sprocket wheel of intermediate chain wheel mechanism doubly-linked sprocket wheel piece, another sprocket wheel of described intermediate chain wheel mechanism doubly-linked sprocket wheel piece is connected with rear flywheel through chain, described rear flywheel chain pile warp 1-2 little tension wheel, wherein a tension wheel disposes and has now speed governing Bicycle tightening device together.

The described oval-shaped axis chain wheel of class that is has identical two, divides the left and right both sides that are fixedly installed in bicycle, three-wheel vehicle axis, and the long and short axle of this two chain wheel is provided with by 90 degree that intermesh.

In another embodiment, described intermediate chain wheel mechanism has identical two groups, each is installed on the vehicle frame of bicycle, three-wheel vehicle and arranged on left and right sides symmetrically, flywheel on the described rear axle has identical two, be installed on the rear axle and arranged on left and right sides symmetrically, Xiao Zhang's bearing up pulley position symmetry of 1-2 little tension wheel and both sides is installed under every side flywheel, and diameter symmetry is identical;

The driving chain of two axis chain wheels is meshed with a sprocket wheel of two groups of intermediate chain wheel mechanism doubly-linked sprocket wheel pieces respectively, another sprocket wheel of described two groups of intermediary agency's doubly-linked sprocket wheel pieces is connected with left and right rear flywheel respectively, and described trailing wheel flywheel chain is the symmetrically arranged little tension wheel of pile warp respectively.

During enforcement, the oval axis chain wheel of described class also can be circular chain wheel.

The utility model is with the suitable fixed pulley of axis chain wheel, transmission device with the suitable movable pulley of intermediate chain wheel mechanism, realized that riding of bicycle, three-wheel vehicle is laborsaving, light, particularly to the three-wheel vehicle of carrying weight, the labor-saving effect is more remarkable, but uses identical pressure to step on the heavier goods of pressure dynamic load of pedal.

Now in conjunction with the accompanying drawings with preferred embodiment:

Fig. 1 is the profile scheme drawing of a kind of bicycle embodiment of the present utility model.

Fig. 2 is the A-A parting view of Fig. 1, is intermediate chain wheel mechanism organigram.

Fig. 3 is the assembly structure decomposing schematic representation of Fig. 2.

Fig. 4 is the transmission device scheme drawing of bilateral transmission of the present utility model, is another embodiment.

Fig. 5 is the assembly structure decomposing schematic representation of Fig. 4.

Bicycle of the present utility model, three-wheel vehicle labor-saving transmission mechanism are installed between axis and the rear axle messenger chain, please refer to Fig. 1 Fig. 2 Fig. 3, and its structure comprises:

Axis chain wheel 1 ovalize or class ellipse:

One intermediate chain wheel mechanism 3, have and be loaded on coaxial duplicate sprocket piece 301, the corresponding axis hole 303 of connecting panel 304A, 304B is respectively stretched at its sprocket shaft 302 two ends, described connecting panel 304A, 304B respectively have the slide plate 305 that outwards is convexly equipped with, this slide plate stretches in the chute 307 of frame plate 306, the length of this chute 307 is greater than the length of slide plate 305, described frame plate has left and right two 306A, 306B and is connected to a general frame with transverse slat 308, and this general frame is fixedly installed on the vehicle frame of bicycle, three-wheel vehicle;

The driving chain 101 of described axis chain wheel 1 is meshed with a sprocket wheel 3011 of intermediate chain wheel mechanism doubly-linked sprocket wheel piece 301, another sprocket wheel 3012 of described intermediate chain wheel mechanism doubly-linked sprocket wheel piece 301 is connected with rear flywheel 2 through chain 201, described rear flywheel chain 201 pile warp 1-2 Xiao Zhang's bearing up pulley 202 and 203, wherein a tension wheel disposes and has now speed governing Bicycle tightening device (this is prior art, and accompanying drawing does not show) together.

Please refer to Fig. 4 Fig. 5, in another embodiment, the described oval-shaped axis chain wheel of class that is has identical two 1A and 1B, divides the left and right both sides that are fixedly installed in bicycle, three-wheel vehicle axis, and the long and short axle of this two chain wheels 1A and 1B is provided with by 90 degree that intermesh.

There are identical two groups of 3A and 3B in described intermediate chain wheel mechanism, each is installed on bicycle symmetrically, a three-wheel vehicle left side, on the vehicle frame of right both sides, flywheel on the described rear axle has identical two 2A and 2B, be installed on a rear axle left side symmetrically, right both sides, Xiao Zhang's bearing up pulley 202A of 1-2 little tension wheel and both sides is installed under every side flywheel, 202B and 203A, the position of 203B is symmetry respectively, the diameter of 202A and 202B is identical, the diameter of 203A and 203B is identical, the driving chain 101 of described two axis chain wheel 1A and 1B is meshed with the sprocket wheel 3011A and the 3011B of two groups of intermediate chain wheel mechanism doubly-linked sprocket wheel pieces respectively, another sprocket wheel 3012A of described two groups of intermediary agency's doubly-linked sprocket wheel pieces and 3012B respectively with a left side, right back axle flywheel 2A is connected with 2B, and described trailing wheel flywheel chain 201 is the symmetrically arranged Xiao Zhang's bearing up pulley of pile warp 202A respectively, 203A and 202B, 203B.

During enforcement, the oval axis chain wheel 1 of described class also can be circular chain wheel.

Claims (3)

1. a bicycle, three-wheel vehicle labor-saving transmission mechanism are installed between axis and the rear axle messenger chain, and it is characterized in that: its structure comprises

Axis chain wheel ovalize, class ellipse:

One intermediate chain wheel mechanism, have and be loaded on coaxial duplicate sprocket piece, its sprocket shaft two ends respectively are set with connecting panel, described connecting panel has the slide plate that outwards is convexly equipped with, this slide plate stretches in the chute of frame plate, the length of this chute is greater than the length of slide plate, and described frame plate has left and right two and be connected to a general frame with transverse slat, and this general frame is fixedly installed on the vehicle frame of bicycle, three-wheel vehicle;

The driving chain of described axis chain wheel is meshed with a sprocket wheel of intermediate chain wheel mechanism doubly-linked sprocket wheel piece, another sprocket wheel of described intermediate chain wheel mechanism doubly-linked sprocket wheel piece is connected with rear flywheel through chain, described rear flywheel chain pile warp 1-2 little tension wheel, wherein a tension wheel disposes and has now speed governing Bicycle tightening device together.

2. bicycle as claimed in claim 1, three-wheel vehicle labor-saving transmission mechanism, it is characterized in that: the described oval-shaped axis chain wheel of class that is has identical two, divide the left and right both sides that are fixedly installed in bicycle, three-wheel vehicle axis, and the long and short axle of this two chain wheel is provided with by 90 degree that intermesh.

Described intermediate chain wheel mechanism has identical two groups, each is installed on the vehicle frame of bicycle, three-wheel vehicle and arranged on left and right sides symmetrically, flywheel on the described rear axle has identical two, be installed on the rear axle and arranged on left and right sides symmetrically, Xiao Zhang's bearing up pulley position symmetry of 1-2 little tension wheel and both sides is installed under every side flywheel, and diameter symmetry is identical;

The driving chain of two axis chain wheels is meshed with a sprocket wheel of two groups of intermediate chain wheel mechanism doubly-linked sprocket wheel pieces respectively, another sprocket wheel of described two groups of intermediary agency's doubly-linked sprocket wheel pieces is connected with left and right rear flywheel respectively, and described trailing wheel flywheel chain is the symmetrically arranged little tension wheel of pile warp respectively.

3. bicycle as claimed in claim 1, three-wheel vehicle labor-saving transmission mechanism is characterized in that: described oval axis chain wheel also can be circular chain wheel.

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