Vehicle Swing Arm Bracket Torsion Adjustment
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Solution Overview
Problem
Conventional swing arm support structures for vehicles fail to effectively adjust the magnitude and timing of external forces transmitted to the vehicle body frame, limiting design flexibility and rider comfort.
Innovation Solution
A swing arm support structure with a bracket that separates the swing arm support portion from the vehicle body frame coupling portion, allowing for torsion generation and adjustable force transmission, featuring recessed portions for power transmission shafts and dual-point coupling for enhanced stability and torsion rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rear fork is directly attached to the vehicle body frame, then the structure is simple, but the magnitude and timing of external force transmitted to the vehicle body frame cannot be adjusted
Solution Approach 1:
The bracket is divided into two separate functional portions: a vehicle body frame coupling portion and a swing arm support portion. This segmentation allows each portion to be optimized independently - the coupling portion for secure attachment to the frame and the support portion for supporting the swing arm, while the distance between them enables adjustment of force transmission characteristics.
Solution Approach 2:
The bracket acts as an intermediary component between the vehicle body frame and the swing arm. By positioning the swing arm support portion at a distance from the vehicle body frame coupling portion, the bracket mediates the transmission of external forces, allowing adjustment of magnitude and timing through the distance parameter.
2Stability of the object's composition
If the swing arm support portion is close to the vehicle body frame coupling portion, then the structure is compact, but torsion generation is limited
Solution Approach 1:
The bracket design allows for dynamic adjustment of the distance between the vehicle body frame coupling portion and the swing arm support portion. This dynamic parameter enables optimization of torsion generation characteristics while maintaining a compact overall structure when the distance is minimized.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables adjustable force transmission, improved torsion rigidity, and enhanced rider comfort by allowing easier foot placement, while maintaining secure engine and swing arm support.
Implementation Method 1
the swing arm support portion is provided apart and separately from the vehicle body frame coupling portion, thus making it possible to generate torsion between the swing arm support portion and the vehicle body frame coupling portion
Data Source
AI summary
To improve a swing arm support structure of a vehicle, thus making it possible to adjust a magnitude, timing, and the like of external force transmitted to a vehicle body frame. In a vehicle, in which a rear wheel is attached to a rear end of a swing arm made freely swingable with respect to a vehicle body frame, dogleg brackets are provided. The dogleg brackets include vehicle body frame coupling portions coupled to the vehicle body frame, and include engine support portions for supporting an engine. Further, the dogleg brackets are provided with swing arm support portions for supporting the swing arm which are provided apart and separately from the vehicle body frame coupling portions.