Collapsible Mobility Scooter Chassis Using Pivoting Frames
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Solution Overview
Problem
Conventional collapsible mobility scooters occupy large space due to non-collapsible chassis, which limits storage and transportation efficiency.
Innovation Solution
A collapsible mobility scooter design featuring a chassis with a front frame pivotally connected to a rear frame via a hinge, utilizing a transformation actuator to move between extended and collapsed positions, along with a rolling device and elevating mechanism to optimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the chassis is made non-collapsible to maintain structural stability, then the scooter can support the chair and steering rod effectively, but the scooter occupies large space during storage and transportation
Solution Approach 1:
The chassis is divided into separate segments (front frame and rear frame) that can be pivotally connected to allow collapsing. The elevating device is also segmented into cross-linked bars that can be opened and closed. This segmentation enables the chassis to transition between extended and collapsed states, reducing storage space while maintaining structural integrity during use.
Solution Approach 2:
The chassis transitions from a static non-collapsible structure to a dynamic collapsible structure. The front frame is pivotally connected to the rear frame, allowing the chassis to change its configuration between extended and collapsed positions. This dynamic capability enables the scooter to adapt its volume based on operational or storage requirements.
2Volume of moving object
If the steering rod is made collapsible with pivotal connections to reduce space, then the scooter occupies smaller space, but the structural stability and support capability are compromised
Solution Approach 1:
The steering rod is designed with a dynamic pivotal connection between its lower and upper sections. This allows the steering rod to pivot relative to the chassis and handle, enabling the scooter to collapse into a compact configuration for storage while maintaining its structural integrity and support capability when in the extended operational position.
3Volume of moving object
If the elevating device uses cross-linked bars that can be closed to lift the chair, then the scooter occupies smaller space, but the mechanism complexity increases
Solution Approach 1:
The elevating device employs cross-linked bars arranged in a scissor-like configuration that can be opened and closed. When closed, the bars nest together in a compact manner, lifting the chair and reducing the overall space occupied by the elevating device. This nested configuration achieves space reduction while maintaining a relatively simple mechanical structure through the use of interconnected bars.
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
The scooter occupies less space in its collapsed position, facilitating easier storage and transportation while maintaining functionality in its extended position.
Implementation Method 1
The chassis includes a front frame pivotally connected to a rear frame. The front frame is pivoted to the rear frame when the chassis is in a collapsed position.
Implementation Method 2
The transformation actuator includes a rear end connected to the rear frame and a front end connected to the front frame.
Data Source
AI summary
A collapsible mobility scooter includes a chassis and a transformation actuator. The chassis includes a rear frame a front frame pivotally connected to a rear frame. The front frame is pivoted to the rear frame when the chassis is in a collapsed position. The front frame is pivoted away from the rear frame when the chassis is in an extended position. The transformation actuator includes a rear end connected to the rear frame and a front end connected to the front frame.