Expandable luggage assemblies

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Solution Overview

Problem

Existing expandable luggage assemblies lack a combination of features that enable efficient storage and transportation of travel items, with prior solutions failing to provide a robust and versatile design that balances expandability, stability, and ease of use.

Innovation Solution

The proposed expandable luggage assembly includes an upper shell with sidewalls, a lower shell with removably coupled sidewalls, a shelf, and wheels, along with handles featuring a telescopic shaft and crossbar configuration, allowing for adjustable expansion and stability during travel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the luggage assembly is made expandable with removable shells, then the storage capacity and versatility are improved, but the structural stability and reliability deteriorate

Engineering Contradiction:

ImproveexpandabilityVSAvoidstructural stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The luggage assembly is divided into separate upper and lower shells that can be removably coupled together. This segmentation allows the shells to be detached and reattached, providing expandability and versatility while maintaining structural integrity through designed coupling mechanisms

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coupling mechanism between shells is designed to be dynamically adjustable, allowing users to secure or release shells as needed. This dynamic coupling system enables the structure to transition between fixed and flexible states, balancing stability with adaptability

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If telescopic handles with multiple tubes are used, then the ease of operation and adaptability are improved, but the device complexity increases

Engineering Contradiction:

Improvehandle adjustabilityVSAvoidhandle structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The telescopic handle employs nested tubes where smaller tubes are inserted within larger tubes. This nesting arrangement allows multiple length adjustments while maintaining a compact form when retracted, reducing overall complexity compared to alternative extension mechanisms

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The telescopic handle structure serves multiple functions: it provides structural support, enables height adjustment for different users, and allows the handle to be reconfigured or removed entirely. This multi-functionality justifies the added complexity by eliminating the need for separate components

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11571051B2Expandable luggage assemblies

Publication Date: 2023.02.07 TIEU TRUNG

AI summary

The disclosure herein includes an expandable luggage assembly, which expandable luggage assembly may include: an upper shell having a plurality of sidewalls; a lower shell having a plurality of sidewalls removably coupled to one more of the plurality of sidewalls of the upper shell; a shelf coupled to the upper shell; a plurality of wheels coupled to the lower shell; and two handles, each handle of the two handles comprising: a crossbar disposed above the upper shell; a first tube coupled to the crossbar and slidably coupled to the upper shell; a second tube slidably coupled to the first tube and capable of being abutted against the upper shell; a third tube slidably coupled to the second tube and coupled to the lower shell.