Coilover Shock Absorber With Separate Mounts
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Solution Overview
Problem
Existing coilover shock absorbers for vehicles face challenges in fine-tuning noise, vibration, and harshness (NVH) performance due to the integrated load paths of damper and coil spring elements, making it difficult to independently adjust their properties for optimal suspension tuning.
Innovation Solution
A coilover shock absorber design with separate mounts and seats for the damper and coil spring elements, allowing the use of different isolator bushings to create independent load paths, enabling independent fine-tuning of NVH performance by using one type of bushing for the damper and another for the coil spring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the coilover shock absorber is mounted in an inverted direction with the larger diameter at the lower end, then space requirements are optimized, but the load paths of the damper and coil spring cannot be separated
Solution Approach 1:
The patent divides the mounting system into separate damper mounts and coil spring seats, allowing independent attachment points for each component. This segmentation enables the load paths to be separated even in inverted mounting configurations, resolving the contradiction between space optimization and load path independence.
Solution Approach 2:
The patent introduces isolator bushings as intermediary elements between the damper mounts and the chassis, and between the coil spring seats and the chassis. These bushings facilitate independent load transmission paths, allowing the damper and coil spring to be mounted separately even in inverted configurations while maintaining independent load paths to the chassis.
2Device complexity
If the damper and coil spring share common mounts, then the structure is simplified, but independent fine-tuning of NVH performance becomes difficult
Solution Approach 1:
The patent segments the mounting system into distinct damper mounts and coil spring seats, allowing each component to be independently adjusted and tuned. This segmentation enables separate selection of isolator bushing properties for the damper and coil spring, facilitating independent NVH fine-tuning while maintaining relatively simple overall structure.
Solution Approach 2:
The patent applies different properties of isolator bushings at different locations - the damper mounts can use bushings with specific damping characteristics while the coil spring seats use bushings with different compliance properties. This local differentiation of bushing properties enables independent fine-tuning of NVH performance for each component while maintaining structural simplicity.
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 design allows for improved ride comfort and NVH performance by enabling independent adjustment of damper and coil spring properties, reducing shearing forces and enhancing suspension tuning capabilities.
Implementation Method 1
attach the piston to the chassis through a first resilient bushing
Implementation Method 2
first resilient bushing and the second resilient bushing are separate
Implementation Method 3
attach the coil spring to the chassis through a second resilient bushing
Implementation Method 4
first resilient bushing and the second resilient bushing are separate
Data Source
AI summary
A coilover shock absorber includes a damper element and a coil spring, where the coilover shock absorber includes a first mount for the damper element and a second mount for the damper element, and where the coilover shock absorber includes a first seat for the coil spring and a second seat for the coil spring, where the first mount for the damper element is operatively separate from the first seat for the coil spring, where the second mount for the damper element is operatively separate from the second seat for the coil spring. The resulting inverted coilover shock absorber allows for separate load paths for the damper element and the coil spring to the chassis.