Three-Dimensional Folding Frame for Electric Vehicles
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Solution Overview
Problem
Existing folding mechanisms for vehicles like electric vehicles, bicycles, and motorcycles are inefficient due to limited folding space, large occupied volume, complex structures, and high manufacturing costs, primarily allowing only two-dimensional folding.
Innovation Solution
A three-dimensional folding frame with pivot portions for movable and rotatable components, including a front and rear folding wheel frame, a handlebar vertical rod, and a crossbar with foldable arms, enabling compact parallel alignment and quick detachment for easy storage and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only two-dimensional folding is implemented, then the folding mechanism is simple, but the folding space is limited and occupied space is large
Solution Approach 1:
The patent transitions from two-dimensional folding to three-dimensional folding by adding vertical movement capability to the pivot portions. The pivot portions can rotate in horizontal directions and simultaneously move vertically, enabling the vehicle frame to fold in three-dimensional space rather than confined to a single plane, thus dramatically reducing both folding space and occupied space
2Device complexity
If traditional folding structures are used, then the structure is straightforward, but the manufacturing cost is high and mass manufacturing is difficult
Solution Approach 1:
The vehicle frame is divided into multiple independent folding sections connected by pivot portions. Each section can be manufactured separately using standardized components, and the modular design facilitates assembly line production and mass manufacturing, reducing overall manufacturing costs while maintaining structural integrity
Solution Approach 2:
The pivot portions are designed as universal joints that can accommodate multiple degrees of freedom (horizontal rotation and vertical movement). These multi-functional pivot portions can be used throughout the vehicle frame structure, reducing the variety of unique parts needed and simplifying manufacturing processes for mass production
3Device complexity
If existing folding mechanisms are used, then the structure is established, but turnover and placement are not conducive
Solution Approach 1:
By enabling three-dimensional folding with vertical movement capability, the vehicle can be folded into a much more compact configuration that is easier to store and transport. The ability to collapse the frame vertically in addition to horizontal folding creates a compact package that significantly improves turnover and placement convenience
Data Source
AI summary
A three-dimensional folding frame is disclosed including a first pivot portion for providing a front folding wheel frame with movable folding; a second pivot portion for providing a rear folding wheel frame with movable folding; a third pivot portion for providing a handlebar vertical rod with rotatable folding; and a fourth pivot portion for providing a crossbar with rotatable folding. The crossbar includes a first folding arm and a second folding arm; the first folding arm is movably connected to the front folding wheel frame by means of the first pivot portion; the front folding wheel frame rotates about the first pivot portion and can move relative to the first folding arm; the second folding arm is movably connected to the rear folding wheel frame by means of the second pivot portion.