Collapsible Extension Frame Hinge Locking Against Bulging
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Solution Overview
Problem
Conventional extension frames for transport boxes bulge when mounted, affecting stability and can spontaneously open due to their weight, making them inconvenient for loading and unloading.
Innovation Solution
An extension frame design featuring two long sides, collapsible transverse sides, and a double-jointed hinge system that maintains stability in both open and collapsed states, with locking positions to prevent spontaneous opening, allowing for increased loading volume without compromising dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional extension frames are made collapsible, then ease of operation is improved, but stability deteriorates due to spontaneous opening
Solution Approach 1:
The hinge incorporates a locking mechanism that applies preliminary counter-action to prevent the spontaneous opening of the collapsible extension frame. The locking element engages with the hinge structure to counterbalance the forces that would otherwise cause the frame to open unintentionally, thus maintaining stability while preserving collapsibility for ease of operation.
2Volume of moving object
If conventional extension frames are mounted onto transport boxes, then loading volume is increased, but shape stability deteriorates due to bulging
Solution Approach 1:
The extension frame is designed with pre-positioned locking elements and hinge structures that are engaged before the frame is fully mounted onto the transport box. This preliminary engagement ensures that the frame maintains its rigid shape and prevents bulging from occurring during the mounting process, while still allowing for increased loading volume.
3Stability of the object's composition
If extension frames are made rigid to prevent bulging, then stability is improved, but ease of operation deteriorates due to inability to collapse
Solution Approach 1:
The extension frame employs a dynamic hinge mechanism with locking elements that allow the frame to transition between rigid and collapsible states. When locked, the frame provides stable, rigid support to prevent bulging; when unlocked, the frame can be easily collapsed for convenient operation and storage. This dynamic design resolves the contradiction between stability and ease of operation.
Data Source
AI summary
An extension frame for a transport box or a pallet includes two long sides, and two collapsible transverse sides. An angle piece is formed on one of the transverse sides or on one of the long sides, with the angle piece having a free end forming a hinge with a free end of an adjacent long side or transverse side. The hinge has in the open state and the collapsed state a locking position in which the long side and the adjacent transverse side are engageable.