Nested Telescopic Suspension Device for Vehicle Downsizing
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Solution Overview
Problem
Existing suspension devices for vehicles with tiltable frames and front wheels face challenges in downsizing while maintaining sufficient rigidity to endure road surface loads, as the distance between telescopic elements and wheels becomes too small, leading to interference issues during steering and tilting.
Innovation Solution
A suspension device configuration with two telescopic elements where the second telescopic element is smaller and connected to the first at multiple points, allowing parallel extension/contraction and overlapping, providing a 'splint function' to enhance rigidity and prevent deformation, thus avoiding interference and enabling downsizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between telescopic elements and wheels is reduced to downsize the vehicle, then the vehicle size is reduced, but interference occurs between telescopic elements and wheels during steering and tilting
Solution Approach 1:
The patent positions the second telescopic element to overlap with the first telescopic element in the left-right direction, utilizing spatial dimensionality change to reduce the vehicle's left-right width while maintaining functional separation through vertical layering of components
2Volume of moving object
If the second telescopic element is made smaller to enable downsizing, then the vehicle size is reduced, but rigidity to endure road surface loads becomes insufficient
Solution Approach 1:
The patent divides the load-bearing function into two telescopic elements with different sizes and positions, where the first telescopic element handles primary suspension and the second smaller telescopic element provides supplemental support and rigidity enhancement through parallel operation
Solution Approach 2:
The second telescopic element, though smaller, provides partial load-bearing action that collectively contributes to overall rigidity, achieving sufficient strength through the combined effect of both elements rather than requiring one oversized element
3Strength
If two telescopic elements are arranged in parallel to enhance rigidity, then rigidity is improved, but the device complexity increases
Solution Approach 1:
The patent combines the functions of two telescopic elements into a single suspension device where both elements operate in parallel to provide suspension and load-bearing functions, achieving enhanced rigidity through functional merging rather than separate systems
Solution Approach 2:
The second telescopic element is positioned to overlap with and nest alongside the first telescopic element in the left-right direction, creating a compact nested arrangement that reduces overall vehicle width while maintaining the dual-element structure
Data Source
AI summary
A suspension device includes two telescopic elements and achieves reduction in a size of a vehicle including the suspension device while securing rigidity sufficient to endure a load applied from a road surface to a wheel supported by the suspension device. A second outer member is smaller than a first outer member and is connected to the first outer member via a first connection portion and a second connection portion arranged in the extension/contraction direction of a second telescopic element, the second outer member is connected to the first outer member via a first connection portion and a second connection portion arranged in the extension/contraction direction of the second telescopic element.