Motorcycle Multi-Configuration Chassis Kinematic Adjustment
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Solution Overview
Problem
Existing motorcycles with multi-configuration chassis lack the ability to easily and rapidly change configurations without modifying the transmission or suspensions, limiting their adaptability to varying riding conditions.
Innovation Solution
The integration of hydraulic or electric cylinders in the kinematic mechanisms of the front fork, rear fork, and saddle assembly allows for adjustable lengths, enabling rapid changes in motorcycle configuration, pitch, and saddle height without altering the shock absorber response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional rigid chassis assembly is used, then structural stability is maintained, but the ability to change configuration easily and rapidly is lost
Solution Approach 1:
The chassis is divided into modular assemblies (front fork assembly, rear fork assembly, saddle assembly) that can be independently adjusted. Each assembly contains kinematic mechanisms with adjustable linkages, allowing configuration changes without redesigning the entire chassis structure.
Solution Approach 2:
The patent introduces dynamic adjustment capabilities through variable length linkages and adjustable components in the fork assemblies. These mechanisms allow the chassis geometry to change dynamically while maintaining structural integrity, enabling rapid configuration transitions.
2Adaptability or versatility
If suspension response is modified to enable configuration changes, then adaptability improves, but shock absorber performance is compromised
Solution Approach 1:
The suspension system is segmented into independent adjustable linkages within the fork assemblies. These linkages can be modified to change chassis geometry without altering the shock absorber components themselves, preserving shock absorber performance while enabling configuration changes.
Solution Approach 2:
Adjustability is introduced locally in the fork assembly linkages rather than modifying the entire suspension system. The shock absorbers remain fixed with their original tuning, while local linkage adjustments achieve the desired configuration changes.
3Adaptability or versatility
If transmission or suspension modifications are made for configuration changes, then adaptability increases, but system complexity and modification requirements increase
Solution Approach 1:
The motorcycle is divided into standardized modular assemblies (front fork, rear fork, saddle) that can be adjusted independently. Each assembly uses standardized interfaces and adjustable linkages, allowing configuration changes without modifying the transmission or major suspension components.
Solution Approach 2:
The adjustable linkages in the fork assemblies serve multiple functions: they enable configuration changes, maintain suspension geometry, and preserve shock absorber performance. This multi-functionality eliminates the need for separate transmission or suspension modifications.
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
This solution enables a wide range of configurations, enhancing riding comfort and adaptability by allowing easy adjustments to the motorcycle's configuration, pitch, and saddle height, improving handling and comfort without modifying the transmission or suspensions.
Implementation Method 1
a front fork assembly Z1, a rear fork assembly D and a saddle assembly A4, each having a kinematic mechanism for adjusting the length or tilt thereof, comprising a rod with variable length Q, A, I connected to a rigid body
Implementation Method 2
The rod with variable length Q, A, I is a hydraulic or electric cylinder or any other linear actuating means
Data Source
Figure 1a~1c
Figure 2~3
Figure 4
AI summary
The invention relates to a motorcycle with multi-configuration chassis comprising: - a rigid chassis assembly (Z6) for supporting the engine and the auxiliary fuel feed and mechanical devices; - a rear fork assembly; - a front fork assembly; - a saddle assembly, where said multi-configuration chassis comprises at least one hydraulic or electric cylinder adapted to modify its length to allow at least one adjustment selected from the following: rear fork assembly lengthening, front fork assembly tilt, front fork assembly lengthening, saddle assembly tilt. The invention also relates to a multi-body kinematic mechanism for a rear fork assembly of a motorcycle, adapted to be fitted to a rigid chassis assembly of a motorcycle to allow the configuration thereof to be varied by means of variation of the length of a hydraulic or electric cylinder.