Hand Transport Device Nested Stacking Design
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Solution Overview
Problem
Existing transport devices require excessive space for stacking due to complex chassis designs and large stacking distances, making it inefficient to store multiple identical devices.
Innovation Solution
The transport device eliminates the transverse push handle and attaches the handle devices directly to the second carrying device, creating a stable connection between the first and second carrying devices, allowing for deeper stacking without side rails, enabling tighter space-saving stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a transverse push handle is used for maneuverability, then ease of operation is improved, but device complexity increases and stacking space increases
Solution Approach 1:
The patent removes the transverse push handle from the transport device, extracting this component that caused complexity and stacking space issues. The maneuverability function is maintained through alternative means (pushing from the rear), eliminating the problematic element while preserving the essential function.
Solution Approach 2:
The rear panel of the second carrying device serves multiple functions: it provides structural support, enables stacking through engagement with identical devices, and allows for maneuverability by serving as a pushing surface. This multi-functional design replaces the dedicated transverse handle while maintaining ease of operation.
2Reliability
If a complex chassis design with side rails is used to support carrying devices, then reliability is improved, but device complexity increases and stacking efficiency deteriorates
Solution Approach 1:
The patent eliminates the side rails and complex chassis structure, removing these components that increased device complexity. The carrying devices are supported directly by the simplified frame structure, maintaining reliability through direct load paths while reducing overall complexity.
Solution Approach 2:
Instead of a complex overall chassis structure, the patent employs localized reinforcement at critical support points where the carrying devices attach to the frame. This provides necessary structural reliability only where needed, rather than throughout the entire chassis, reducing unnecessary complexity.
3Ease of operation
If large stacking distances are used between identical devices, then ease of operation is maintained, but loss of space occurs during storage
Solution Approach 1:
The patent designs the transport device with nested stacking capability, where one device can be inserted into another with minimal clearance. The carrying devices and frame are configured to interlock tightly, achieving space-efficient stacking comparable to nested dolls while maintaining operational ease through proper dimensional design.
Solution Approach 2:
The patent optimizes critical dimensional parameters including the width of the second carrying device, the height of the frame, and the engagement features between stacked devices. By carefully adjusting these parameters, the design achieves tight stacking clearance while preserving sufficient space for operational maneuverability.
Data Source
Figure 1~2
AI summary
The invention relates to a transporting device (1) that can be moved by hand and stacked in stacks of identical devices, comprising a first carrying device (4) and comprising a second carrying device (8) arranged above the first carrying device (4), wherein the first carrying device (4), viewed from above, is designed to be wider than the second carrying device (8), wherein, in addition, the first carrying device (4) has a first fixing means (6) each arranged in the rear area of the carrying device and on both sides, and wherein a handle device (13) for moving the carrying device (1) is fixed to each first fixing means (6). The second carrying device (8) has a second fixing means (10) each arranged in the rear area (12) of the carrying device and on both sides, wherein each handle device (13) is additionally fixed to the nearest of the two second fixing means (10), and wherein between the two handle devices there is formed an interspace (18), which is used by the second carrying device (8) of a rear transporting device (1) when the latter is pushed into a transporting device (1) located in front.