Convertible Vehicle Framework for Stable Trolley-to-Table Conversion
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Solution Overview
Problem
Existing multi-purpose trolleys are unstable when transformed into tables due to a mobile quadric linkage structure, and they lack convenience and efficiency in transporting heavy objects, as they require additional cumbersome components and have limited capacity.
Innovation Solution
A convertible vehicle with a framework assembly comprising pivotally connected first and second framework units that form a horizontal platform for transportation and an X-shape structure for fixation, equipped with wheels and a carrier member, allowing for dual function as a trolley and table with enhanced stability and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile quadric linkage structure is used to form a table, then the table can be transformed from a trolley, but the panel is supported in a very unstable manner and easily to be shaken
Solution Approach 1:
The patent employs a dynamic transformation mechanism where the framework transitions from a mobile quadric linkage structure during transportation to a locked chain structure when forming a table. This allows the system to adapt its stability characteristics based on operational mode, achieving both mobility and stability.
Solution Approach 2:
The patent changes the structural parameters of the framework by transforming the linkage configuration. When forming a table, the system locks the chain structure to alter the degrees of freedom, thereby changing from an unstable mobile configuration to a stable fixed configuration, resolving the stability issue while maintaining transformation capability.
2Device complexity
If only one U-shaped push rod is employed to move heavy objects, then transportation is simplified, but a table cannot be formed and a second U-shaped push rod is required
Solution Approach 1:
The patent designs the framework units to serve multiple functions. Each framework unit can act as a support structure for transportation and simultaneously serve as part of the table structure when transformed. This multi-functionality eliminates the need for separate components like second U-shaped push rods, achieving both simplicity and dual functionality.
Solution Approach 2:
The patent merges the transportation function and table formation function into a single integrated framework system. By combining these functions into one structure, the patent eliminates the need for additional separate components, reducing device complexity while maintaining versatility.
3Adaptability or versatility
If a two-wheeled trolley with toe plate is used, then transformation to table is possible, but the trolley could not be put on the ground for stacking and transporting goods
Solution Approach 1:
The patent transitions from a two-wheeled design to a four-wheeled design, adding another dimension of ground contact. This allows the trolley to be properly placed on the ground for stacking and transporting goods, while the framework units can still be transformed to form a stable table structure, resolving both capabilities simultaneously.
Data Source
AI summary
A convertible vehicle having a transportation mode and a fixation mode is disclosed. The convertible vehicle includes a framework assembly, a plurality of wheels connected to the framework assembly, and a carrier member pivotally connected to the framework assembly. The framework assembly includes a first framework unit and a second framework unit pivotally connected to each other. In the fixation mode of the convertible vehicle, the first framework unit and the second framework unit are folded to form a horizontal platform, each of the wheels is located at a lower surface of the first framework unit or the second framework unit and located at a horizontal plane for transportation, and the carrier member is placed on the horizontal platform for carrying objects. In the fixation mode of the convertible vehicle, the first framework unit and the second framework unit are unfolded to be inclined and to form an X-shape structure, each of the wheels is located at the lower surface of the inclined first framework unit or the inclined second framework unit, and the carrier member is placed on the framework for carrying objects.