Variable Ratio Floating Suspension Isolating Chassis Vibration
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Solution Overview
Problem
Traditional vehicle suspension systems transmit a portion of the vibration force from the shock absorber to the vehicle chassis, leading to an uncomfortable ride due to their open configuration, which does not effectively isolate vibrations in the horizontal direction.
Innovation Solution
A variable ratio floating suspension system is designed as a closed system where the shock absorbing mechanism is operatively connected to both upper and lower leverage arms, allowing both ends to move simultaneously, thus isolating the vibration force within the system and preventing its transmission to the vehicle chassis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the shock absorber is rigidly connected to the vehicle chassis with one end and movably connected to a control arm with the other end, then the suspension system can absorb up-and-down impacts from the wheel, but a portion of the dampening force or vibration force is transmitted from the shock absorber to the vehicle chassis, resulting in an uncomfortable ride
Solution Approach 1:
The suspension system is segmented into an open configuration where the shock absorber is divided into two independent connections: one rigidly connected to the vehicle chassis and the other movably connected to the control arm. This segmentation allows the shock absorber to absorb vertical impacts while isolating vibration forces from direct transmission to the chassis, improving ride comfort by separating the impact absorption function from the vibration transmission path.
2Device complexity
If the suspension system is configured as an open system with the shock absorber connected to the chassis and control arm, then the structure is simpler, but the vibration force is transmitted to the vehicle chassis, reducing ride comfort
Solution Approach 1:
The control arm acts as an intermediary element between the wheel and the vehicle chassis. By connecting the shock absorber to the control arm through a movable connection rather than directly to the chassis, the control arm mediates the transmission of forces, allowing vertical impact absorption while filtering out vibration forces that would otherwise be transmitted to the chassis, thus improving ride comfort without significantly increasing structural complexity.
3Object-affected harmful factors
If the shock absorber is connected to allow both ends to move simultaneously as the wheel moves up-and-down, then the transfer of vibration from the wheel to the vehicle chassis is reduced, but the system complexity increases
Solution Approach 1:
The suspension system employs dynamic connections where the shock absorber is movably connected to the control arm rather than being rigidly fixed. This dynamic configuration allows both ends of the shock absorber to move simultaneously as the wheel moves up-and-down, adapting to the changing geometric relationships during suspension travel. The movable connection enables the system to reduce vibration transfer to the chassis while maintaining structural integrity, achieving improved ride comfort with moderate complexity through the use of pivoting and sliding joints.
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 configuration effectively reduces the transfer of vibrations from the wheel to the vehicle chassis, enhancing ride comfort by maintaining the vibration force within the suspension system, thereby providing a more comfortable and stable ride.
Implementation Method 1
the shock absorber or dampening mechanism of the suspension system... absorbs vibrations and impacts from a road surface... to absorb the up-and-down impacts transmitted from the wheel
Implementation Method 2
A first end portion of an upper leverage arm is pivotally connected to a vehicle chassis or frame at a first pivot joint... A second end portion of the upper leverage arm is pivotally connected to an upper end portion of the actuating arm at a second pivot joint
Data Source
AI summary
The variable ratio floating suspension system (10) includes upper (30) and lower (40) leverage arms with a shock-absorbing component (50) connecting the leverage arms (30, 40). In the preferred embodiment, the leverage arms (30, 40) and shock-absorbing component (50) pivotally connect a vehicle chassis to a vehicle wheel spindle (26). As the vehicle moves over uneven terrain, the configuration of the variable ratio floating suspension system (10) isolates vibrations and other unwanted forces in the shock-absorbing component (50) so that these forces are not transferred to the associated vehicle chassis.