Electric Vehicle Mobile Base with Retractable Seat and Cargo Bed
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Solution Overview
Problem
The existing electric vehicles with permanently installed baggage baskets are oversized, compromising sharp-turn performance and stability in loading and transporting rigid items like shopping baskets, and are inconvenient for hand-pushing with baggage.
Innovation Solution
An electric vehicle design featuring a mobile base with expandable and contractible wheelbase, a movable seat, and a back plate that transforms between raised and laid-down positions, incorporating a cargo bed for baggage storage with a through hole for easy loading and unloading, allowing the vehicle to be downsized for improved maneuverability and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a permanently installed basket is used for baggage storage, then the receiving space for baggage is secured, but the electric vehicle becomes oversized and sharp-turn performance deteriorates
Solution Approach 1:
The basket is designed to be movable between a stored position and a usable position, rather than being permanently fixed. This allows the vehicle to maintain a compact size when the basket is stored, improving sharp-turn performance, while still providing full baggage storage capability when the basket is deployed to the usable position.
Solution Approach 2:
The baggage storage function is separated into a detachable, movable basket component rather than being integrated into the fixed vehicle structure. This segmentation allows the basket to be independently positioned and stored, resolving the conflict between storage capacity and vehicle compactness.
2Length of moving object
If the vehicle is downsized for better sharp-turn performance, then maneuverability is improved, but the receiving space for baggage is reduced
Solution Approach 1:
The movable basket can be positioned in a stored location when not in use, allowing the vehicle to operate in a compact configuration for sharp turns. When baggage storage is needed, the basket is moved to its usable position, restoring full storage capacity without requiring a permanently oversized vehicle structure.
Solution Approach 2:
The basket is designed to move along the vehicle's longitudinal axis, utilizing the length dimension dynamically. This allows the vehicle to switch between a compact configuration (basket stored) and an extended configuration (basket deployed), effectively managing space in different operational states.
3Length of moving object
If the basket is downsized to reduce vehicle size, then sharp-turn performance is improved, but the stability for loading rigid items like shopping baskets deteriorates
Solution Approach 1:
The basket maintains full size and structural integrity when deployed to its usable position, providing stable support for rigid items like shopping baskets. The key innovation is that this full-size basket can be stored in a compact position when not needed, allowing the vehicle to be small during operation while still accommodating a large, stable basket when storage is required.
4Stability of the object's composition
If the vehicle is configured for stable baggage transport, then loading stability is improved, but the convenience for hand-pushing with baggage deteriorates
Solution Approach 1:
The movable basket can be stored in a compact position that reduces the vehicle's overall length and weight when hand-pushing is required. This dynamic reconfiguration allows the vehicle to be more convenient for manual handling while still maintaining the capability for stable baggage transport when the basket is deployed to its usable position.
Data Source
AI summary
In an electric vehicle, a seat on a mobile base can move between a sitting position in which a sitting surface faces the vehicle upper side, and a retracted position in which a seating portion having the sitting surface is retracted from the sitting position to the vehicle front side, a back plate on the mobile base can move between a raised position on the vehicle rear side and the vehicle upper side with respect to the seating portion in the sitting position, and a laid down position on the vehicle front side with respect to the raised position, a cargo bed portion on the mobile base is positioned on the vehicle lower side with respect to the seating portion of the seat in the sitting position and is positioned on the vehicle rear side with respect to the seating portion of the seat in the retracted position.