Foldable Transfer Trolley with Rotatable Drag Rod for Compact Storage
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Solution Overview
Problem
Existing transfer trolleys occupy excessive space during storage due to their structural design, which limits their portability and convenience, especially when stored in vehicles or small spaces.
Innovation Solution
A transfer trolley with a foldable frame and a rotatable drag rod, equipped with constraint components that allow the frame to be locked in an unfolded state for use and unlocked for folding, reducing storage space when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the frame is designed to be foldable, then the storage space occupation is reduced, but the structural complexity increases
Solution Approach 1:
The frame is divided into multiple bracing pieces that can be folded relative to each other. The connective components include first traction rods and connecting bases that enable segmented folding of the frame structure, reducing storage space while maintaining functionality.
Solution Approach 2:
The drag rod is rotatably connected to the frame, allowing it to be folded and nested within or alongside the frame structure when not in use. This nesting approach reduces the overall space occupation during storage without adding significant structural complexity.
2Adaptability or versatility
If the drag rod is made rotatable, then the portability is improved, but the device complexity increases
Solution Approach 1:
The drag rod is designed with rotational capability around its connection point to the frame. This dynamic feature allows the drag rod to be adjusted and folded into different positions, improving portability and storage convenience while using a simple rotational mechanism rather than complex systems.
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 design enables convenient unfolding and locking of the frame for use while allowing the trolley to be compactly folded for storage, enhancing portability and space efficiency.
Implementation Method 1
one end of the drag rod being rotary fixed to middle of one end in a length direction of the frame, and the other end of the drag rod being flipped upwardly or downwardly around the one end of the drag rod that is rotationally connected with the frame
Implementation Method 2
constraint components, fixed to and cooperating with the frame to allow the frame in a locked state of keeping unfolded or an unlocked state of being folded in the width direction
Implementation Method 3
casters, fixed to bottom of the frame
Data Source
AI summary
A transfer trolley and an outdoor transfer device are disclosed. The transfer trolley includes a frame, casters, a drag rod, and constraint components. The frame has a structure of being folded or unfolded in a width direction, the casters are two pairs and fixed to bottom of the frame. One end of the drag rod being rotary fixed to one end in a length direction of the frame, and the other end of the drag rod being flipped upwardly or downwardly around the one end of the drag rod that is rotationally connected with the frame. The constraint components are fixed to and cooperating with the frame to allow the frame in a locked state of keeping unfolded or an unlocked state of being folded in the width direction. By intelligently designing the frame into a foldable structure, greatly reducing the space required for storage of the transfer trolley.