Roll Cage Chassis Spine for Off-Road Rollover Load Reinforcement
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Solution Overview
Problem
Off-road vehicles face challenges in mechanical strength, safety, convenience, and comfort due to their susceptibility to rollovers and rough terrain, which existing chassis designs fail to adequately address.
Innovation Solution
A roll cage chassis spine with a welded-tube structure, featuring a front and rear canopy that reinforces the chassis, distributing loading forces through strut braces, windshield braces, and roof bars to enhance structural integrity and protect occupants during rollovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a roll cage or canopy comprising a welded tube structure is coupled to the chassis to protect occupants, then safety is improved, but the device complexity increases
Solution Approach 1:
The patent combines the roll cage and canopy into a single integrated welded tube structure that is coupled to the chassis. This merging of functions allows the structure to simultaneously provide rollover protection and overhead coverage, improving occupant safety while avoiding the need for separate roll cage and canopy systems, thus managing complexity through functional integration
Solution Approach 2:
The welded tube structure serves multiple functions: it acts as both a roll cage for rollover protection and a canopy for overhead coverage. This multi-functionality allows a single structural element to address multiple safety concerns, improving overall occupant protection while reducing the number of separate components needed
2Strength
If the chassis is reinforced with additional structural components to improve mechanical strength, then strength is improved, but the weight of the vehicle increases
Solution Approach 1:
The welded tube structure is strategically positioned and configured to provide reinforcement specifically at critical areas of the chassis where structural strength is most needed for rollover protection and overhead support. This localized reinforcement approach improves chassis strength where required without adding unnecessary weight to the entire vehicle structure
Data Source
AI summary
An apparatus and methods are provided for a chassis for an off-road vehicle that includes a roll cage chassis structural spine. The chassis is a welded-tube variety of chassis that includes a front portion and a rear portion that are joined to an intervening passenger cabin portion. The roll cage chassis spine includes a front canopy and a rear canopy comprising an overhead spine to the chassis that increases the strength of the chassis and improves the safety of occupants within the vehicle. The rear canopy couples to the rear portion of the chassis, and the front canopy couples to the front portion of the chassis and the rear canopy. The front canopy and the rear canopy are configured to cooperatively reinforce the chassis during loading forces on the front portion due to front struts and loading forces on the rear portion due to rear struts.