Hard-Sided Luggage Split Metal Frame Expansion Locking
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Solution Overview
Problem
Existing expandable luggage lacks a reliable mechanism to securely lock and maintain the expanded shape, especially in hard-sided luggage, which is inflexible and prone to damage from shocks, and does not allow for easy movement and steering when upright.
Innovation Solution
A hard-sided article of luggage with a split metal frame and an expansion and locking device that allows for compression and expansion, featuring pivotable shells, a ratchet-type locking mechanism, and wheels that can spin vertically, enabling secure expansion and easy mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hard-sided materials are used for luggage shells, then durability and protection are improved, but flexibility and compression-expansion capability deteriorate
Solution Approach 1:
The rigid shell is divided into two separable halves (first shell and second shell) that can move independently relative to each other. This segmentation allows the hard-sided structure to expand and compress while maintaining the durability benefits of rigid materials, as the shells remain structurally sound but can change the overall volume of the luggage.
Solution Approach 2:
The connection between the first and second shells is made dynamic through pivotable joints and expansion mechanisms. Instead of a fixed rigid connection, the shells are operably connected to allow relative movement, enabling the hard-sided luggage to transition between compressed and expanded states while maintaining structural integrity.
2Adaptability or versatility
If expansion mechanisms are added to hard-sided luggage, then compression-expansion capability is improved, but structural stability and shock resistance deteriorate
Solution Approach 1:
The expansion mechanism includes shock-absorbing elements and floating features that provide beforehand cushioning against impacts. The mechanism is designed to internally shift and compensate for shocks, protecting the rigid shell structure from damage while maintaining expansion capability.
Solution Approach 2:
An intermediary expansion mechanism is introduced between the first and second shells to mediate their relative movement. This intermediary structure provides the necessary flexibility for expansion while maintaining overall structural stability and protecting the rigid shell components from direct stress.
3Adaptability or versatility
If expansion mechanisms are added to hard-sided luggage, then compression-expansion capability is improved, but reliability and secure locking deteriorate
Solution Approach 1:
The expansion mechanism incorporates self-locking features that automatically secure the expanded position without requiring additional manual intervention. The mechanism is designed to lock and maintain the expanded shape reliably, with floating features that allow internal adjustment while maintaining secure locking.
Solution Approach 2:
Traditional complex mechanical locking systems are replaced with a more reliable expansion and locking device that integrates seamlessly with the hard-sided structure. The new mechanism provides secure locking while maintaining the durability and protection characteristics of rigid luggage.
4Adaptability or versatility
If traditional expansion mechanisms are used, then compression-expansion capability is improved, but device complexity and pinch point exposure increase
Solution Approach 1:
Complex mechanical components, particularly those creating pinch points, are extracted or removed from the expansion mechanism. The design simplifies the expansion system while maintaining functionality, and protects any remaining moveable parts from interaction with luggage contents.
Solution Approach 2:
Protective intermediaries are introduced to shield moveable parts of the expansion mechanism from contact with luggage contents. This reduces complexity by eliminating the need for complex protective structures while maintaining safety and functionality.
5Strength
If hard-sided materials are used, then protection and durability are improved, but ease of operation and mobility deteriorate
Solution Approach 1:
The hard-sided luggage incorporates dynamic elements including wheels and pivotable handles that enable easy movement and steering. The rigid shell maintains protection and durability while the dynamic components provide maneuverability, allowing the luggage to be steered in any direction when upright.
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 solution provides a secure and flexible expansion mechanism that protects contents from pinch points, allows for shock absorption, and enables the luggage to maintain an expanded shape while being easily steerable and stable when upright.
Implementation Method 1
at least one expansion and locking device disposed within the first shell and configured to allow free movement of the expansion portion in a compression direction toward the first shell, and configured to enable locking of the expansion portion in an expanding direction away from the first shell
Implementation Method 2
A hard-sided article of luggage with a split metal frame and an expansion and locking device that allows for compression and expansion
Implementation Method 3
The wheels are able to spin about the vertical axis of the main body when the main body is in an upright position
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3C
AI summary
An embodiment of an article of luggage is disclosed, the luggage in one practice having compression and expansion capability comprising an interposed metal frame of split configuration having an expansion portion positioned between the split where the metal frame is attached to one side of the luggage. One of more expansion and locking devices permit compression of contents and also enables locking the luggage in its expanded shape.