Variable-Width Mobility Vehicle Frame for Narrow-Space Stability
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Solution Overview
Problem
Existing mobility vehicles with fixed wheel positions face challenges in adjusting their horizontal width, leading to difficulties in navigating narrow spaces and increased rollover risks at high speeds.
Innovation Solution
A mobility vehicle design that allows the body part and support frames to rotate relative to each other via a first rotation axis, with engagement parts and motion restriction mechanisms to adjust the horizontal width, controlled by a controller to optimize space navigation and obstacle avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the horizontal width of the mobility vehicle is increased to improve stability and reduce rollover risk at high speeds, then the vehicle cannot enter narrow spaces such as elevators or hallways
Solution Approach 1:
The support frames are designed to be rotatable relative to the body part about a first rotation axis, allowing the horizontal width to dynamically change between a first width (for stability) and a second width (for narrow space navigation). This dynamic adjustment resolves the contradiction by enabling the vehicle to have different configurations for different operational conditions.
Solution Approach 2:
The invention changes the geometric parameter of horizontal width by rotating the support frames between different angular positions. This parameter change allows the vehicle to transition between a wider configuration for stability and a narrower configuration for entering tight spaces, thereby resolving the contradiction between rollover resistance and adaptability to narrow spaces.
2Adaptability or versatility
If the horizontal width of the mobility vehicle is decreased to improve maneuverability in narrow spaces, then the risk of rollover accident increases at high speeds
Solution Approach 1:
The rotatable support frames enable the vehicle to dynamically adjust its horizontal width based on operational needs. When navigating narrow spaces, the vehicle adopts a narrower configuration for maneuverability, and when traveling at high speeds, it transitions to a wider configuration for enhanced stability and reduced rollover risk.
Solution Approach 2:
The invention utilizes parameter changes in the horizontal width through rotation of support frames. This allows the vehicle to optimize its geometric configuration - using a smaller width parameter for narrow space navigation and a larger width parameter for high-speed stability, thereby resolving the contradiction between maneuverability and rollover resistance.
3Ease of manufacture
If the positions of the wheels relative to the body part are fixed to simplify manufacturing, then the horizontal width of the mobility vehicle cannot be adjusted
Solution Approach 1:
The vehicle structure is segmented into a body part and multiple support frames that can rotate relative to each other. This segmentation allows the support frames to be independently positioned and adjusted, enabling horizontal width adjustment while maintaining relatively simple manufacturing of individual components.
Solution Approach 2:
The invention introduces dynamic adjustability through rotatable support frames while keeping the overall structure relatively simple. The rotation mechanism allows the horizontal width to be adjusted without requiring complex manufacturing processes, resolving the contradiction between manufacturing simplicity and width adjustability.
Data Source
AI summary
A mobility vehicle can include a body part, a plurality of support frames configured to support the body part and rotate about a first rotation axis relative to the body part, and a plurality of movement parts respectively connected to the plurality of support frames and configured to move the body part and the support frames, in which the body part and the support frames are configured to be allowed to rotate about the first rotation axis relative to one another in a state in which the body part and the support frames are supported on one another in a direction in which the first rotation axis extends.