Multi-mode Load Carrier with Tool-free Mode Changer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing load carriers with wheels lack the ability to be easily reconfigured between different operating modes without tools, limiting their versatility and convenience for users.
Innovation Solution
A collapsible load carrier with a rolling base and a base pusher that can be pivoted and reconfigured using a load-carrier mode changer to convert between a flat storage mode, a front-and-rear-wheel cart mode, and a 2-wheel hand-truck mode, allowing users to change configurations without requiring tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the load carrier is designed with fixed wheel configuration, then the structure is simple and stable, but the adaptability to different transportation needs is limited
Solution Approach 1:
The patent implements dynamic reconfigurability by allowing the wheel units to be pivoted between different positions (e.g., front-wheel drive configuration vs. rear-wheel drive configuration) through a mode changer mechanism. This enables the load carrier to adapt its wheel arrangement based on transportation needs while maintaining a relatively simple overall structure.
Solution Approach 2:
The load carrier is designed with multi-functionality through its ability to operate in multiple modes (e.g., cart mode, hand-truck mode, differential drive mode) using the same basic wheel units and frame structure. The mode changer allows a single device to perform multiple transportation functions without requiring separate mechanisms for each mode.
2Ease of operation
If the load carrier uses fixed wheel positions, then the manufacturing is simple, but the ease of reconfiguration between modes is poor
Solution Approach 1:
The mode changer mechanism is designed to be operated by the user without requiring external tools or complex assembly procedures. The pivoting action of the wheel units through the mode changer provides a self-service reconfiguration process that is simple enough for end-users to perform independently.
Solution Approach 2:
The patent employs dynamic pivoting mechanisms that allow wheel units to be repositioned between modes through straightforward mechanical action. The linkage system connects the wheel units to the frame in a way that enables easy reconfiguration while maintaining manufacturing simplicity through standardized connection points and pivot axes.
3Volume of moving object
If the load carrier is designed for compact storage, then the storage space is optimized, but the stability during operation may be compromised
Solution Approach 1:
The load carrier features dynamic wheel positioning where wheel units can be pivoted to operational positions during use and folded into compact positions during storage. When in operation, the wheel units are positioned to provide stable support and appropriate wheelbase for the selected mode, while collapsing to minimize storage volume when not in use.
Solution Approach 2:
The wheel units are designed as separable, pivotable segments that can be independently positioned relative to the frame. This segmentation allows the wheels to be folded close to the frame for compact storage while maintaining stable spacing and positioning when deployed in operational modes.
Data Source
AI summary
A multi-mode load carrier is convertible to assume a storage mode, a cart mode, and a hand-truck mode. The load carrier includes a rolling base and a base pusher having a handgrip.