Small-sized bicycle

Abstract

The present invention relates to a small-sized bicycle and, more particularly, to a highly functional small-sized bicycle which can be conveniently carried and transported by having a front wheel and a rear wheel which are small-sized wheels; which performs accelerated rotation, when pedals are stepped on, by means of power transfer of a transmission; and which can effectively deal with irregular obstructions on the road by having the front wheel, in which a plurality of wheels form a group, be installed on the front side thereof. The aforesaid features of the present invention can be achieved by a small-sized bicycle in which: a first frame (20) perpendicularly mounted in front of a horizontal support frame (10) has branch pipes (21) which are formed on the lower portion thereof and branch to both sides; a bracket (41) having radial blades is mounted between the branch pipes (21) and are installed to be rotatable by a shaft (41a); a plurality of wheels are mounted in the respective blades of the bracket (41) and form a group, thereby forming a front wheel (40); a front sprocket (61) is mounted in the center of the support frame (10) so as to be rotated by pedals (61a); a rear sprocket (62) fixed to a drive shaft (71a) of a transmission (70) mounted behind the support frame (10) is connected to the front sprocket (61) by a chain (63) such that power is transferred; a rear wheel (50) is mounted on a driven shaft (73a) of the transmission (70) so as to perform accelerated rotation; a saddle (31) is fixed to the top of a second frame (30) which is vertically mounted behind the support frame (10); and a handle frame (22) is fixed to the top of the first frame (20).

Description

technical field [0001] The present invention relates to a small bicycle. Specifically, it involves a high-performance small bicycle. The front and rear wheels of this bicycle are made of small wheels, which are easy to carry and carry. At the same time, a set of front wheels consisting of multiple wheels is installed in the front, so that it can effectively deal with irregular obstacles on the road surface. Background technique [0002] Generally speaking, a bicycle, as a two-wheeled vehicle that uses human power to rotate the wheels and move, consists of the following parts: a pedal that is stepped on with the foot, a crank member, a sprocket (sprocket), and a chain through the chain. The system that transmits power to the rear wheels. [0003] However, bicycles are equipped with large wheels on the vehicle frame, so they are inconvenient to carry. Leisure sports tools such as scooters with small wheels installed on the lower part of the pedals cannot be used on roads wit...

AI Technical Summary

Problems solved by technology

Therefore, in the prior art, the technology according to the present invention cannot be found: that is, relying on the speed changer can realize accelerated rotation and convenient transportation, and at the same time, the front wheels formed by multiple wheels can also effectively deal with obstacles on the irregular road surface

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