Universal Luggage Handle Bracket with Reinforced Tube Housing
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Solution Overview
Problem
Conventional luggage handle systems require multiple dedicated parts for various luggage sizes and designs, increasing manufacturing complexity and costs, and are prone to damage due to torsional and bending loads, with limited repair options.
Innovation Solution
A universal telescoping handle system with a reinforced tube housing and adjustable connection locations allows for a single set of standardized tubes to fit different luggage sizes, featuring a bracket member with multiple tube receiving portions and self-drilling fasteners for enhanced strength and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional telescoping handle designs use separate parts for each luggage model and size, then each handle can be optimized for its specific luggage, but manufacturing complexity increases and inventory costs rise
Solution Approach 1:
The bracket member is designed with a universal structure that can accommodate multiple tube sizes and configurations through a single standardized interface. The bracket includes a receiving portion that can hold tubes of different diameters and lengths, allowing one bracket design to serve multiple luggage models and sizes, thereby reducing the number of unique parts needed across the product line.
Solution Approach 2:
The handle system is divided into separate modular components: a standardized bracket member and interchangeable tubes. This segmentation allows the bracket to remain universal while tubes can be varied to meet specific luggage requirements, simplifying manufacturing of the bracket while maintaining adaptability through tube variation.
2Adaptability or versatility
If conventional telescoping handle designs use separate parts for each luggage model and size, then each handle can be optimized for its specific luggage, but inventory costs increase
Solution Approach 1:
The standardized bracket member serves as a universal mounting platform that can accommodate tubes for multiple luggage models and sizes. This universality reduces the total number of unique bracket variants that need to be manufactured and inventoried, allowing vendors to maintain a smaller, more manageable inventory while still supporting diverse luggage product lines.
3Ease of operation
If conventional telescoping tubes are used, then the handle can be extended to comfortable lengths, but the tubes are prone to denting or breakage due to high torsional and bending loads
Solution Approach 1:
The tube housing is constructed from composite materials, specifically aluminum alloy, which provides superior strength-to-weight ratio and resistance to torsional and bending loads. This composite construction allows the tubes to maintain the required extendability for user comfort while significantly improving resistance to denting and breakage compared to conventional single-material tubes.
Solution Approach 2:
The tube housing features a curved, aerodynamic cross-sectional geometry rather than a straight rectangular profile. This curved geometry naturally distributes and redirects torsional and bending stresses along the tube length, reducing stress concentration points and improving overall structural strength while maintaining the telescoping functionality.
4Ease of operation
If conventional handle designs are used, then the handle functionality is provided, but simplified repair or replacement of damaged tubes is not possible
Solution Approach 1:
The handle system is segmented into easily separable components with standardized interfaces. The tubes are designed as independent, interchangeable modules that can be quickly removed and replaced on the universal bracket member using simple fastening mechanisms. This modular segmentation enables consumers to replace damaged tubes without requiring specialized tools or expertise, significantly improving ease of repair.
5Ease of operation
If conventional telescoping tubes are used, then the handle can be retracted when convenient, but the tubes are susceptible to damage during carrier inspection and transit
Solution Approach 1:
The aluminum alloy composite construction provides enhanced toughness and impact resistance, allowing the tubes to withstand the rough handling and accidental impacts that occur during carrier inspection and transit while maintaining the retraction capability for convenient storage.
Data Source
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AI summary
The invention includes a universal retractable handle assembly for attachment to luggage items of a variety of different sizes. A plurality of tubes having a fixed length can be attached to a bracket member (10) such that each tube can extend in a telescoping manner to a different distance from the bracket member (10) when the handle is in the extended position and thus be employed in different sizes of luggage. Additionally, a tube housing is provided which includes a tube receiving portion (14, 16) and reinforcing portions on an outer surface of the tube housing. The tube receiving portion (14, 16) is formed with an arcuate shape which corresponds with the shape of the tube member to be inserted therein. The reinforcing portions include a plurality of planar flanges which extend beyond the outer surface of the tube receiving portion (14, 16) to provide improved structural characteristics.