Foldable tricycle

Abstract

The invention discloses a foldable tricycle which comprises a front wheel steering mechanism for a front wheel, wherein two parallel connecting rods are in pivoted connection with a support sleeve in the front wheel steering mechanism; the two connecting rods are in pivoted connection with a driving component; the driving component is in pivoted connection with a rear frame with rear wheels and is connected with a cushion support tube through a pull rod; the cushion support tube is in pivoted connection with the rear frame; when the foldable tricycle is unfolded, the front wheel is not coincided with the rear wheels, inclined angles are kept between the connecting rods and the support sleeve and the rear frame is vertical to a vertical tube of the cushion support tube; when the foldable tricycle is folded, the front wheel is parallel to and locally coincided with the rear wheels, a plane formed by the lowest points of the front wheel and the rear wheels is parallel to the horizontal plane, the connecting rods are parallel to the vertical tube of the support sleeve and the rear frame and the cushion support tube are parallel to each other or are formed into a wedge-shaped structure. After the foldable tricycle is folded, the three wheels are under parallel state and are free from height difference, the whole tricycle can be pushed through a pulling handle, the tricycle can be conveniently carried under the folded state, the folding effect of the tricycle is better, less space is occupied, the whole appearance is beautiful, no protruded part exists and the safety is higher.

Description

Technical field [0001] The invention relates to a tricycle, especially a folding tricycle. Background technique [0002] With the continuous improvement of people's quality of life, the demand for energy saving, environmental protection, lightness, diversity, complementarity and aesthetics of transportation is becoming more and more urgent. [0003] Electricity, as an important energy source with environmental protection, cleanliness and high conversion rate, is widely used in production and life. As a green sunrise industry, electric vehicles are used as an energy-saving, environmentally friendly, convenient and relatively low-cost medium and short-distance transportation tool , Has a larger mass base and market prospects. [0004] And tricycles, as the name suggests, include three-wheeled electric vehicles or bicycles or cars. Compared with two-wheeled vehicles, one more wheel is in contact with the ground. It has unique stability advantages on slippery and slippery roads. Signif...

AI Technical Summary

Problems solved by technology

[0005] But existing tricycle volume is big, is unfavorable for placement, so also have to design a part of collapsible tricycle on the market, as application number is 2013800540944 and application number is the Chinese patent application of 2009101311581, but these collapsible tricycles also have some obvious defects,

[0006] For example, the folding tricycle in the above two patent applications, after folding, the front wheel and the rear wheel form a certain angle or have a height difference between the front wheel and the rear wheel, so it is inconvenient to push it in the folded state, because the general structure of the electric tricycle is large , so it is inconvenient to carry

[0007] At the same time, as in the patent application of 2013800540944, the overall structure of the tricycle is complicated. After folding, the occupied space is still large, and because there is no effective support structure, it is not easy to place. Of course, there are other folding structures, and the space between the parts The degree of integration and coordination is not high, resulting in unsatisfactory folding effect

[0008] In addition, because the entire folding mechanism of the above-mentioned patent is relatively complicated, multiple parts need to be operated to realize folding and unfolding, so the operation of folding and unfolding is cumbersome, with many processes, time-consuming and labor-intensive, and poor operability

[0009] Finally, due to the existence of the folding mechanism, multiple parts in the folding mechanism often have a certain degree of mobility. Therefore, in the unfolded state, a certain fixed structure is required to ensure that the parts will not move suddenly and cause safety accidents.

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