Variable speed scooter

Abstract

The invention discloses a gear-shift scooter which comprises a scooter bracket (1), a front wheel (2), a rear wheel (3), a power pressure rod (4) which is movably connected above the scooter bracket, a power pressure rod returning mechanism (A), and a power driving mechanism subassembly (B) which is arranged between the power pressure rod (4) and a driving gear (13) arranged on a wheel shaft. The gear-shift scooter is mainly characterized in that the upper end of the power pressure rod (4) is movably connected with a movable pedal (7) which is divided into a position-limiting end and a labor-saving end, a movable connecting member (10) which can limit the upward motion range of the movable pedal is arranged between the front part of the limiting end of the movable pedal and the scooter bracket, and the power driving mechanism subassembly (B) adopts a connecting rod type driving ratchet wheel rotating structure and a gear-shift driving mechanism. The invention is a scooter with two to four wheels, the pedaling mode conforms to a human body standing and pedaling posture and is easy to smoothly exert force, and meanwhile, the invention has high-class, middle-class and low-class shifting effects and high output power.

Description

Technical field [0001] The invention relates to a reciprocating pedal scooter, in particular to a single-power or double-power scooter with a speed change function. Background technique [0002] Present commercially available two to three-wheel scooter mainly utilizes inertial driving after obtaining power by a pedal of people, and it needs one foot to pedal frequently, which is not very convenient. In the published patent literature, the patent No. ZL01237990.5 discloses a flexible double-scooter vehicle. Although the cable can automatically return to its position during the interaction of the two pedals, the vehicle bracket adopts a raised middle part. The mechanism makes the flexible double pedals higher off the ground, the center of gravity of the human body is unstable when pedaling, and there is a feeling of leaning forward and backward when pedaling, which is not conducive to human pedaling force; patent ZL01135643. It is a bicycle with two-pedal up and down interact...

AI Technical Summary

Problems solved by technology

[0002] The two- to three-wheeled scooters currently available in the market mainly rely on one foot to pedal the ground to obtain power and use inertial driving. It needs one foot to frequently pedal the ground, which is not very convenient.

In the published patent literature, the patent No. ZL01237990.5 discloses a flexible double-scooter vehicle. Although the cable can automatically return to its position during the interaction of the two pedals, the vehicle bracket adopts a raised middle part. The mechanism makes the flexible double pedals higher off the ground, the center of gravity of the human body is unstable when pedaling, and there is a feeling of leaning forward and backward when pedaling, which is not conducive to human pedaling force; patent ZL01135643. One-up and one-down interactive bicycles with double pedals, but the chain is completely returned by the spring, one is difficult to install, and the other is that the vibration of the spring can easily lead to detachment

Furthermore, since the habitual distance (i.e. amplitude) of people stepping up and down is about 16cm, the stroke of input power will be limited for this reason, so the scooter of the prior art always inputs power (or kinetic energy) when stepping upright. Insufficient, resulting in the scooter speed is too low and unable to go uphill, and they also have no structural shifting effect

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