Motorcycle Front Suspension Dynamic Pivot for Load Reaction
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Solution Overview
Problem
Existing motorcycle front suspensions with oscillating arm designs do not react optimally to loads, exhibiting significant pro-dive or anti-dive effects due to complex tire trajectory paths, which affects handling and stability.
Innovation Solution
A motorcycle front suspension design featuring a fork with a steering member connected to the steering handlebar, an oscillating arm, and a shock absorber group with a rotatably and slidingly connected attachment foot to the front wheel pin, allowing transverse forces to be absorbed and transferred to a more stable point, reducing stress on the shock absorber and improving load reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid connection is used between the shock absorber group and the front wheel pin, then mechanical strength and structural stability are improved, but the suspension cannot optimally react to loads and exhibits marked pro-dive or anti-dive effects
Solution Approach 1:
The patent applies the dynamics principle by transforming the rigid connection into a dynamic pivoting connection. The attachment foot of the shock absorber group is no longer rigidly fixed to the front wheel pin, but can pivot relative to it. This allows the suspension system to dynamically adapt its geometry in response to varying loads, eliminating the marked pro-dive or anti-dive effects while maintaining structural strength through the robust pivoting joint.
2Stability of the object's composition
If a rigid bracket is used to connect the shock absorber group to the front wheel pin, then structural stability is improved, but the tire contact point follows a complex trajectory affecting handling
Solution Approach 1:
The patent applies dynamics by replacing the static rigid bracket connection with a dynamic pivoting connection. The attachment foot can now pivot relative to the front wheel pin, allowing the suspension to actively adjust its configuration in response to road conditions and loading. This dynamic adaptation simplifies the tire contact point trajectory and improves handling quality while maintaining structural stability through the robust pivoting joint design.
3Ease of manufacture
If the shock absorber group is rigidly connected to the front wheel pin, then manufacturing simplicity is improved, but the suspension exhibits marked pro-dive or anti-dive effects
Solution Approach 1:
The patent applies the dynamics principle by introducing a pivoting connection between the shock absorber attachment foot and the front wheel pin. This dynamic joint allows the suspension to adapt its geometry to varying loads, eliminating marked pro-dive or anti-dive effects. The manufacturing complexity increase is minimal, involving primarily the addition of pivot bearings and mounting brackets, while delivering significant performance improvements in load reaction capability.
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
The design enhances the motorcycle's ability to react to loads, reducing or eliminating pro-dive or anti-dive effects, thereby improving handling and stability by maintaining a smoother compression-expansion trajectory and distributing forces more effectively.
Implementation Method 1
a shock absorber group, comprising a spring (43) and a damper (50)
Implementation Method 2
a shock absorber group, comprising a spring (43) and a damper (50)
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Motorcycle front suspension (10) comprising: a fork (11) having a steering member (12) mechanically connected or adapted to be connected to a handlebar (7) of a motorcycle (1); an oscillating arm (14) having a first end and a second end; a rod (13) having a first end, pivotally joined to said steering member (12), and having a second end pivotally joined to the first end of the oscillating arm (14); a shock absorber group (40), comprising a spring (43) and a damper (50), said group (40) extending from an attachment head (41 ), mechanically connected to the steering member (12), to an attachment foot (42), pivotally joined to the second end of the oscillating arm (14).