CN201400283Y - Synchronous driving mechanism of foldable bicycle - Google Patents

Abstract

The utility model relates to a synchronous driving mechanism of a foldable bicycle, which is characterized in that: the synchronous driving mechanism comprises a driving device and a transmission device; the driving device comprises a wheel disc with synchronous teeth, a driven synchronous gear and a driving synchronous belt; the transmission device comprises a transmission wheel with synchronousteeth, an overdrive driving wheel with synchronous teeth and a transmission synchronous belt; the driven synchronous gear and the transmission wheel with synchronous teeth are fixed on a rotating shaft; the overdrive driving wheel with synchronous teeth is composed of an outer wheel with synchronous teeth, an inner wheel disc, a pawl and a torsional spring; by adopting the structure, when in use,the transmission device is arranged on the outer side of a bicycle frame, when a back yoke is in a horizontal plane and rotates outwards, the driving synchronous belt of the driving device can be folded and bent. The disadvantages in the prior art that a chain can be curled by winding the shaft only in the vertical surface and can not be bent on the horizontal plane is overcome; the driving deviceis arranged at the inner side of the bicycle frame, lubricating oil does not need to use, so as to prevent from staining the clothes in the operating and folding process.

Description

A kind of synchronous drive mechanism of Folding Bicycle

Technical field

The utility model relates to a kind of device of Folding Bicycle, especially a kind of transmission device of Folding Bicycle.

Background technology

Present prior art, a kind of transmission device of Folding Bicycle is by the flywheel and the chain of driving wheel, override type, and the flywheel of described override type is made of interior wheel, foreign steamer, ratchet and torsion spring.Existing problems are: use the folding bicycle of this transmission device, its rear crotch can not be around vehicle frame, rotate in horizontal surface.

Summary of the invention

The purpose of this utility model is: a kind of synchronous drive mechanism of Folding Bicycle is provided, and it not only can overcome deficiency of the prior art effectively, can rear crotch be rotated in level around vehicle frame, and can prevent actuating device people's the clothes of making dirty.

The utility model is achieved in that a kind of synchronous drive mechanism of Folding Bicycle, it is characterized in that: it comprises actuating device and driving device;

Described actuating device comprises the wheel disc with synchronous tooth, driven synchronizer gear and drives synchronously that band constitutes;

Described driving device comprises power wheel with synchronous tooth, is with synchronously with the override type drive wheel and the transmission of synchronous tooth;

Driven synchronizer gear be fixed in the rotating shaft with the power wheel of synchronous tooth;

The override type drive wheel of the synchronous tooth of described band is by constituting with the foreign steamer of synchronous tooth, interior wheel disc, ratchet and torsion spring.

The synchronous drive mechanism of a kind of Folding Bicycle of the utility model owing to adopt such structure, in use, driving device is installed in the vehicle frame outside, when rear crotch in horizontal surface, when laterally rotating, the transmission of driving device is with synchronously, and is collapsible, crooked.Overcoming in the prior art chain can only curl around axle in vertical surface, defective that can not bending in horizontal surface; Actuating device is installed in the inboard of vehicle frame, does not need to use lubricating oil, can prevent the clothes of making dirty in operation, folding process.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is the front view of the utility model actuating device.

Fig. 3 is the front view of the utility model driving device.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As shown in Figure 1, a kind of synchronous drive mechanism of Folding Bicycle is characterized in that: it comprises actuating device and driving device;

As shown in Figure 2, described actuating device comprises wheel disc 1 with synchronous tooth, driven synchronizer gear 2 and drives and is with 3 to constitute synchronously;

As shown in Figure 3, described driving device comprises power wheel 4 with synchronous tooth, is with 6 synchronously with the override type drive wheel 5 and the transmission of synchronous tooth;

Driven synchronizer gear 2 is fixed in the rotating shaft 7 with power wheel 4 with synchronous tooth; Rotating shaft 7 articulates with vehicle frame.

The override type drive wheel 5 of the synchronous tooth of described band is made of foreign steamer 52, interior wheel disc 51, ratchet 54 and the torsion spring 53 with synchronous tooth.

Claims (1)

1, a kind of synchronous drive mechanism of Folding Bicycle is characterized in that: it comprises actuating device and driving device;

Described actuating device comprises the wheel disc with synchronous tooth, driven synchronizer gear and drives synchronously that band constitutes;

Described driving device comprises power wheel with synchronous tooth, is with synchronously with the override type drive wheel and the transmission of synchronous tooth;

Driven synchronizer gear be fixed in the rotating shaft with the power wheel of synchronous tooth;

The override type drive wheel of the synchronous tooth of described band is by constituting with the foreign steamer of synchronous tooth, interior wheel disc, ratchet and torsion spring.

Images