CN201231844Y

CN201231844Y - Booster for bicycle

Info

Publication number: CN201231844Y
Application number: CNU2008200259497U
Authority: CN
Inventors: 夏恩玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-14
Filing date: 2008-07-17
Publication date: 2009-05-06
Anticipated expiration: 2018-07-17

Abstract

The utility model discloses a bicycle assisting device, which is characterized in that: a handle (1) runs through a shaft sleeve which is fixed on the bicycle handlebar; the end of the handle (1) is connected with the front end of a first connecting rod (4) through a rotating shaft (3); the end of the first connecting rod (4) is connected with the front end pin of a second connecting rod (11); the end of the second connecting rod (11) is connected with the front end pin of a third connecting rod (5); the part nearby the end of the third connecting rod (5) is fixed on the bicycle through a pin shaft; the end of the third connecting rod (5) is connected with the front end of a fourth connecting rod (12); the end of the fourth connecting rod (12) is connected with a crankshaft (6) which is fixed on the bicycle, and a chain wheel (7) is fixed at the other end; and the chain wheel (7) is connected with a chain wheel (9) which is fixed on the rear shaft of the bicycle. Compared with prior art, the bicycle assisting device has the advantages that the design is reasonable, the structure is simple, and the effect is obvious.

Description

Bicycle power-assisted device

One, technical field

The utility model relates to a kind of bicycle power-assisted device.

Two, background technology

Existing bicycle all is a bicycle mostly, and it is harder to ride, and existing most improvement is one electric device to bicycle to be installed, though the relatively good car basis that has also increased bicycle simultaneously of effect is maintained somewhat expensive.

Three, summary of the invention

The utility model provides a kind of reasonable in design, simple in structure, obvious results bicycle power-assisted device at above weak point.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of bicycle power-assisted device, it is characterized in that: handle passes the axle sleeve that is fixed in the bicycle handle bar, the end of handle is connected by S. A. with the front end of one-level connecting rod, the end of one-level connecting rod is connected with the front end pin of secondary connecting rod, the end of secondary connecting rod is connected with the front end pin of three grades of connecting rods, three grades of connecting rods are fixed on the bicycle by bearing pin near the end, the end of three grades of connecting rods connects the front end of level Four connecting rod, the end of level Four connecting rod connects bent axle, bent axle is fixed on that its other end is fixed with sprocket wheel on the bicycle, and sprocket wheel is connected with sprocket wheel on being fixed on bicycle rear axle by chain.

Described bicycle power-assisted device is pure mechanical connection, simple in structure, handle is connected by S. A. with the one-level connecting rod, and the one-level connecting rod is that rotate at the center with the S. A. when realizing the rotation of bicycle front-wheel, has guaranteed that the stuck phenomenon and the traveling comfort of device can not appear in device.

Described bicycle power-assisted device secondary connecting rod is that screwed two minutes bars are threaded and form.

The secondary connecting rod is that screwed two minutes bars are threaded and form, and can adjust one-level connecting rod and three grades of connecting rod bonded assemblys apart from the traveling comfort and the smoothness that have guaranteed device.

The crankshaft end outside of described bicycle power-assisted device bent axle is provided with the protective case that is fixed on the bicycle.

Protective case can well prevent the dirty cam of dust, also prevented when the people by bike cyclist's the clothing of making dirty of the greasy dirt on the cam simultaneously.

Handle fluctuates, handle is that the center swings up and down with the axle sleeve, handle swings up and down and drives one-level connecting rod and secondary connecting rod up-and-down movement, it is that the center swings up and down with the attachment point that the secondary connecting rod drives three grades of connecting rods, three grades of connecting rods drive the level Four connecting rod, and it is that rotate at the center with the anchor shaft that the level Four connecting rod drives bent axle, owing to bent axle, sprocket wheel are connected as a single entity, sprocket wheel rotates under the drive of bent axle, and sprocket wheel drives the sprocket rotation that is fixed on the axletree of rear wheel through chain.

Four, description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is the construction profile scheme drawing of Fig. 1.

Five, the specific embodiment

As shown in Figure 1 and Figure 2: the 1st, handle, the 2nd, axle sleeve, the 3rd, S. A., the 4th, the one-level connecting rod, 5 is three grades of connecting rods, the 6th, bent axle, the 7th, sprocket wheel, the 8th, chain, the 9th, sprocket wheel, the 10th, protective case, the 11st, secondary connecting rod, the 12nd, level Four connecting rod.

This work-saving device now can directly apply on the existing bicycle, and axle sleeve 2 is fixed on the handlebar during use, and three grades of connecting rods 5 are fixed on the crossbeam of car, bent axle 6 be fixed on the crossbeam of the car side of sitting down or the back Carrier for cycle on, sprocket wheel 9 is fixed on the axletree of rear wheel.

People's handle 1 that fluctuates, handle 1 is that the center swings up and down with axle sleeve 2, handle 1 swings up and down and drives one-level connecting rod 4 and secondary connecting rod 11 up-and-down movements, it is that the center swings up and down with the attachment point that secondary connecting rod 11 drives three grades of connecting rods 5, three grades of connecting rods 5 drive level Four connecting rods 12, and it is that rotate at the center with the anchor shaft that the level Four connecting rod drives bent axle 6, because bent axle 6, sprocket wheel 7 are connected as a single entity, sprocket wheel 7 rotates under the drive of bent axle 6, and sprocket wheel 7 drives sprocket wheel 9 through chain 8 and rotates.By adjusting the smoothness of the degree of depth assurance device that is threaded of two fens bars in the secondary connecting rod 11.

The rotation of sprocket wheel 9 is passed to trailing wheel with power, plays power-assisted effect.Characteristics such as this device has simple in structure, and effect is remarkable.

The people steps on stretcher and gets final product on the level land or during descending, at loading or upward slope handle 1 this device of operation that can fluctuate at need of riding, plays power-assisted effect.

Claims

1, a kind of bicycle power-assisted device, it is characterized in that: handle (1) passes the axle sleeve (2) that is fixed in the bicycle handle bar, the front end of the end of handle (1) and one-level connecting rod (4) is connected by S. A. (3), the end of one-level connecting rod (4) is connected with the front end pin of secondary connecting rod (11), the end of secondary connecting rod (11) is connected with the front end pin of three grades of connecting rods (5), three grades of connecting rods (5) are fixed on the bicycle by bearing pin near the end, the end of three grades of connecting rods (5) connects the front end of level Four connecting rod (12), the end of level Four connecting rod (12) connects bent axle (6), bent axle (6) is fixed on that its other end is fixed with sprocket wheel (7) on the bicycle, and sprocket wheel (7) is connected with sprocket wheel (9) on being fixed on bicycle rear axle by chain (8).

2, bicycle power-assisted device as claimed in claim 1 is characterized in that: secondary connecting rod (11) forms for screwed two minutes bars are threaded.

3, bicycle power-assisted device as claimed in claim 1 is characterized in that: the crankshaft end outside of bent axle (6) is provided with the protective case (10) that is fixed on the bicycle.