CN2387025Y

CN2387025Y - High speed power saving bicycle driving gear

Info

Publication number: CN2387025Y
Application number: CN 99238357
Authority: CN
Inventors: 刘保华
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-20
Filing date: 1999-08-20
Publication date: 2000-07-12
Anticipated expiration: 2009-08-20

Abstract

The utility model provides a driving device of a high-speed power-saving bicycle, which is that two sets of chain transmission devices which are respectively a left chain transmission device and a right chain transmission device are arranged on a middle axle of a bicycle; the chain transmission on the right side is that the right end of the middle axle is provided with chain wheels O< 1 >, O< 2 >, O< 3 >, Q< 1 > and Q< 3 >; chains are respectively used for winding the chain wheels; the chain transmission on the left side is that the left end of the middle axle is provided with chain wheels P< 1 >, P< 2 > which are wound by chains. The device solves the problems of short power arm of a crank between the angles of 0 DEG and 30 DEG on the upper part right ahead of the middle axle, small thrust force, exertion of people who ride bicycles and slow speed. The driving device of a high-speed power-saving bicycle is suitable for installing on bicycles used for tournaments, tourism and loading.

Description

High speed labour-saving bicycle actuating device

The utility model belongs to bicycle driving device, relates in particular to high speed labour-saving actuating device.

For a long time, bicycle and human lives are closely related, bring great convenience to the human lives, be that people travel, amusement, one of the topmost vehicle of going to work, bicycle commonly used, has only one-sided chain gear, though chain gear efficient height, cost is low, and this one-sided chain transmission mode has following shortcoming, when pedal directly over bicycle middle shaft in 0 °～30 ° angular zones, because power arm is short, cyclist's leg muscle shrinks the power that produces, and to be used to overcome the thrust of riding resistance little, and the component that is used for vertically downward is big, thereby cause the waste of energy, cyclist's health is tired easily.

The purpose of this utility model provides a kind of actuating device that two cover chain gears are housed on a bicycle, it is faster than the bicycle of one-sided chain gear in same pedal speed, and laborsaving.

For realizing that this purpose adopts following technical scheme: this actuating device is accepted the partial sum running part by power and is formed, power receiving portion branch comprises crank and pedal, running part comprises large and small sprocket wheel and chain, on axis, be positioned at two crank inboards and be provided with left and right two cover drivings device, the right side chain gear is the bottom at vehicle frame, bracing frame is arranged on the axis, sprocket wheel O is arranged on bracing frame ₂And O ₃, at sprocket wheel O ₃Inboard other, and with sprocket wheel O ₃Same rotating shaft is provided with sprocket wheel Q ₃, there is sprocket wheel O the inboard that is positioned at hinge wheel at the right-hand member of axis ₁And Q ₁, sprocket wheel O ₁, O ₂, O ₃Be in same plane, they centered on, with sprocket wheel O with chain ₁, O ₃The sprocket wheel Q of arrangement in parallel ₁, Q ₃, with chain it being centered on, the left side chain gear is the left end at axis, the inboard of crank is provided with sprocket wheel P ₁, at sprocket wheel P ₁Top and sprocket wheel O ₂Same rotating shaft is provided with sprocket wheel P ₂, chain is with sprocket wheel P ₁, P ₂Center on.

Because the utility model is provided with chain gear at the left and right two ends of bicycle middle shaft, when right pedal above axis, when right crus of diaphragm is firmly pedaled stretcher downwards forward, drive the right rear side minor sprocket on the one hand, make bicycle to overtake, on the other hand, sprocket wheel O ₁Drive sprocket wheel O ₂, because sprocket wheel O ₁Make eccentric rotary around axis, make sprocket wheel O ₂Rotating speed faster than sprocket wheel O ₁, sprocket wheel O ₂Drive coaxial sprocket P ₂, sprocket wheel P ₂Drive the sprocket wheel P on the axis ₁, make left side hinge wheel rotating speed faster than the right side, when the right side pedal was finished half cycle and driven, the left side pedal had gone to outside 30 jiaos of its axis sides of going forward, and is same when should left foot firmly pedaling stretcher downwards, sprocket wheel O ₁Rotating speed faster than sprocket wheel O ₂, along with sprocket wheel O ₁, O ₂Twirl alternately, and overcome axis and just going up the interior rough sledding that the arm of force is short, thrust is little of 0 °～30 ° angular zones in the place ahead, therefore, this double-drive device make bicycle can speedup again can be laborsaving, alleviate long-time rider's fatigue.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the utility model embodiment right side chain gear scheme drawing;

Fig. 2 is the utility model embodiment left side chain gear scheme drawing;

Fig. 3 is sprocket wheel O ₃Scheme drawing;

Fig. 4 is Fig. 3 A-A half-sectional view.

Embodiment: actuating device comprises left and right crank 13 and 8, pedal 14 and 9, hinge wheel 15 and 7, the chain 5 and 12 that centers on hinge wheel 7,15 and minor sprocket 4,11 are on axis, and the inboard that is positioned at two cranks 8 and 13 is provided with left and right two cover drivings device, right side chain gear (Fig. 1) is the bottom at vehicle frame 3, there is bracing frame 1 the axis top, and bracing frame 1 is an equilateral triangle, and the length of side is 120～170mm, be the del setting, the two drift angle places, top of bracing frame 1 are provided with sprocket wheel O ₂And O ₃, at sprocket wheel O ₃Inboard and O ₃Same rotating shaft is provided with sprocket wheel Q ₃, at the right-hand member of axis, there is sprocket wheel O the inboard that is positioned at hinge wheel 7 ₁And Q ₁, sprocket wheel O ₁, O ₂, O ₃Be positioned at same plane, with sprocket wheel O ₁, O ₃The sprocket wheel Q of arrangement in parallel ₁And Q ₃, as sprocket wheel O ₁Distance of center circle equilateral triangle bracing frame center when nearest, sprocket wheel O ₃Distance of center circle equilateral triangle bracing frame the center farthest, at this moment use chain 2 with sprocket wheel O ₁, O ₂, O ₃Center on, use chain 6 sprocket wheel Q ₁And Q ₃Center on, left side chain gear (Fig. 2) is the left end at axis, and the inboard of crank 13 is provided with sprocket wheel P ₁, at sprocket wheel P ₁Top and sprocket wheel O ₂Same rotating shaft is provided with sprocket wheel P ₂, sprocket wheel P ₁And P ₂With chain 10 it is centered on.Hinge wheel 15 and 7 lays respectively at the axis left and right side, and their the first half is circular, and the latter half is oval, and crank 8 and 13 is through circle and oval junction, sprocket wheel O ₃By outer ring O ₃' and inner ring O ₃" form outer ring O ₃' be gear ring, outer ring O ₃' and inner ring O ₃" both ends of the surface of cooperation place have circular groove 16, a plurality of steel balls 17 are arranged, outer ring O in the groove 16 ₃' around inner ring O ₃" rotation, sprocket wheel O ₁, O ₂, O ₃, P ₁And P ₂Big or small identical, diameter is 90～110mm, sprocket wheel O ₁And O ₃The center of circle equate to the distance of separately pivot center, be 20～30mm, sprocket wheel Q ₁And Q ₃Size is identical, and diameter is 50～70mm.

Claims

1. high speed labour-saving bicycle actuating device, accepting the partial sum running part by power forms, power receiving portion branch comprises crank and pedal, running part comprises large and small sprocket wheel and chain, it is characterized in that: being positioned at two crank inboards on axis, to be provided with left and right two cover drivings device, right side chain gears are the bottoms at vehicle frame, bracing frame is arranged on the axis, sprocket wheel O is arranged on bracing frame ₂And O ₃, at sprocket wheel O ₃Inboard other, and with sprocket wheel O ₃Same rotating shaft is provided with sprocket wheel Q ₃, there is sprocket wheel O the inboard that is positioned at hinge wheel at the right-hand member of axis ₁And Q ₁, sprocket wheel O ₁, O ₂, O ₃Be in same plane, they centered on, with sprocket wheel O with chain ₁, O ₃The sprocket wheel Q of arrangement in parallel ₁, Q ₃, with chain it being centered on, the left side chain gear is the left end at axis, the inboard of crank is provided with sprocket wheel P ₁, at sprocket wheel P ₁Top and sprocket wheel O ₂Same rotating shaft is provided with sprocket wheel P ₂, chain is with sprocket wheel P ₁, P ₂Center on.

2. high speed labour-saving bicycle actuating device according to claim 1 is characterized in that: and arranged on left and right sides respectively has a hinge wheel on the axis, and the first half of this hinge wheel is circular, and the latter half is oval, and crank is fixed on circle and oval junction.

3. high speed labour-saving bicycle actuating device according to claim 1 and 2 is characterized in that: sprocket wheel O ₃Be made up of inside and outside circle, the outer ring is a gear ring, and the both ends of the surface between outer ring and the inner ring have circular groove, and a plurality of steel balls are arranged in the groove.

4. high speed labour-saving bicycle actuating device according to claim 3 is characterized in that: sprocket wheel O ₁, O ₂, O ₃, P ₁, P ₂Diameter identical, be 90～110mm, sprocket wheel O ₁And O ₃The center of circle equate to the distance of pivot center separately, be 20～30mm.

5. high speed labour-saving bicycle actuating device according to claim 4 is characterized in that: bracing frame is an equilateral triangle, and the length of side is 120～170mm.

6. high speed labour-saving bicycle actuating device according to claim 5 is characterized in that: sprocket wheel Q ₁And Q ₃Diameter is identical, is 50～70mm.