Curved Vehicle Bracket Design for Low Center of Gravity
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Solution Overview
Problem
Existing vehicle designs face challenges in maintaining a low center of gravity while ensuring a large stroke for the front fork, leading to potential instability and increased air resistance.
Innovation Solution
A vehicle design featuring a lower side bracket with a downward bending shape from both ends towards the center, supporting the head pipe and front forks, which reduces the center of gravity and allows for a larger fork stroke, along with a V-shaped upper side bracket and guide board to enhance airflow and reduce air resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lower side bracket is disposed upward to extend the stroke of the front forks, then the fork stroke is increased, but the position of the center of gravity becomes higher
Solution Approach 1:
The lower side bracket is formed with a downward bending shape (curved surface) from both ends toward the center in the width direction. This curvature allows the bracket to be positioned higher for increased fork stroke while the downward bend at the center keeps the head pipe support position lower, preventing the center of gravity from rising excessively.
2Length of moving object
If the upper side bracket is disposed higher above the head pipe, then the fork stroke is increased, but the position of the center of gravity becomes higher
Solution Approach 1:
The upper side bracket is also formed with a downward bending shape from both ends toward the center in the width direction. This allows the bracket to extend higher for increased fork stroke while maintaining a lower center position for supporting the head pipe, thereby preventing excessive rise in the vehicle's center of gravity.
3Device complexity
If the lower side bracket has a flat surface, then the structure is simpler, but the center of gravity position rises when fork stroke is extended
Solution Approach 1:
Instead of a flat surface, the lower side bracket employs a downward bending curved surface from both ends toward the center. This curved configuration enables the bracket to achieve both structural integrity and the dual-height positioning needed to increase fork stroke while keeping the center of gravity low.
4Stability of the object's composition
If the vehicle design prioritizes a low center of gravity, then stability is improved, but the fork stroke becomes limited
Solution Approach 1:
The downward bending shape of both the upper and lower side brackets creates a dual-height structure that simultaneously achieves a low center of gravity for stability and sufficient vertical space for large fork stroke. The curved geometry allows the support points to be positioned optimally for both objectives.
Data Source
AI summary
A vehicle has a vehicle body including a head pipe, a lower side bracket disposed below the head pipe for supporting the head pipe upward in a substantial center of the bracket in the vehicle width direction, and a pair of legs of a front fork fixed in vicinities of the ends of the lower side bracket. The lower side bracket is formed to have a downward sloping shape, which slopes from the ends of the lower side bracket toward its center.