Folding frame and folding tricycle

Abstract

The invention discloses a folding frame and a folding tricycle. The folding frame comprises a driving piece, wherein the driving piece is connected with one end of each of two parallel connection rods distributed in the vertical direction through a pivot; the other ends of the two connection rods are connected with a front wheel steering mechanism through a pivot; the driving piece is further connected with a rear frame; and rising motion and falling motion of the end, which is connected with the driving piece, of the rear frame drive the driving piece to do synchronous motion, so that the driving piece drives the connection rods to roll over relative to the front wheel steering mechanism and drives a seat cushion branch pipe linked with the driving piece to roll over relative to the rear frame. The folding frame is ingenious in design and simple in structure, and drives a plurality of pivotally connected components to be linked with one another by taking the driving piece as a center, so that folding of the overall tricycle is realized; all the components are closely related, and the co-movement property is high; after being folded, the frame is compact in overall structure; a main body structure is mainly distributed in the axial direction and occupies a small transverse space; and furthermore, with the simple and ingenious folding structure, the folding frame needs a small number of folding and unfolding steps, and is easy to operate and convenient to use.

Description

technical field [0001] The invention relates to a vehicle frame and a tricycle, in particular to a folding vehicle frame and a folding tricycle. Background technique [0002] With the continuous improvement of people's quality of life, the demand for energy saving, environmental protection, portability, diversity, complementarity and aesthetics of vehicles is becoming more and more urgent. [0003] As an important energy source with environmental protection, cleanliness and high conversion rate, electricity is widely used in production and life. As a green sunrise industry, electric vehicles are energy-saving, environmentally friendly, convenient to travel, and relatively low-cost medium-to-short-distance transportation. , has a large mass base and market prospects. [0004] The tricycle, as the name suggests, includes three-wheeled electric vehicles or bicycles or automobiles. Compared with two-wheeled vehicles, one more wheel is in contact with the ground, and it has a ve...

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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 larg

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