The invention provides a method for folding a tricycle frame. The crossbeam of the tricycle frame is divided into three segments, namely a front-segment short crossbeam, a middle-segment short crossbeam and a back-segment short crossbeam. The front-segment short crossbeam is connected with the middle-segment short crossbeam through a hinge. The back-segment short crossbeam is connected with the middle-segment short crossbeam through a hinge. When the back-segment short crossbeam and the front-segment short crossbeam make the middle-segment short crossbeam project and be doubled back for folding and furthermore make the handle rotate through the hinges for approaching the middle-segment short crossbeam, a seat cushion pipe is unlocked and retreats into a seat cushion supporting outer pipe. After the seat cushion supporting outer pipe is unlocked, the seat cushion supporting outer pipe presses downwards so that a seat cushion approaches the middle-segment short crossbeam. A front wheel retreats and enters a portion between two back wheels, thereby achieving a purpose of folding the whole tricycle frame.
Method for folding tricycle frame
2016-01-27
Patent
Electronic Resource
English
IPC: | B62K Fahrräder , CYCLES |