Retractable Luggage Handle with Rotating Conveyance Modes
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Solution Overview
Problem
Existing rolling luggage designs lack ease of use, assembly, and manufacturing efficiency, particularly in providing versatile handle mechanisms that allow for multiple modes of conveyance and efficient storage.
Innovation Solution
A retractable handle assembly with telescoping and rotatable features, allowing the handle to extend between a stored position and an extended position, and convert between two modes of use: parallel to the base for two-wheeled conveyance and angled for four-wheeled conveyance, facilitated by push-button actuation and locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a retractable handle assembly with multiple positions is provided, then versatility and ease of operation are improved, but device complexity increases
Solution Approach 1:
The handle assembly is designed to be dynamic rather than static, allowing it to change configuration between retracted and extended positions, and between different angular orientations. This enables the handle to adapt to different conveying modes (two-wheeled vs four-wheeled) while using a unified mechanical structure rather than multiple fixed configurations.
Solution Approach 2:
A single handle assembly mechanism serves multiple functions: it can extend and retract, it can rotate to different angles, and it can lock in various positions. This multi-functional design eliminates the need for separate mechanisms for each configuration, thereby achieving versatility without proportionally increasing complexity.
2Ease of operation
If a telescoping handle mechanism is provided, then ease of operation is improved, but manufacturing complexity increases
Solution Approach 1:
The handle is divided into telescoping segments that can extend and retract relative to each other. This segmentation allows for easy operation through simple telescoping motion while enabling manufacturing through standardized telescoping components that can be produced using conventional fabrication processes.
Solution Approach 2:
A push-button mechanism serves as an intermediary between the user and the handle extension/retraction function. This intermediary simplifies the user interface for operation while the underlying mechanical linkage can be designed for efficient manufacturing through conventional assembly processes.
3Reliability
If locking mechanisms are added to secure handle positions, then reliability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism is designed to be self-actuating through the push-button interface. When the button is pressed, it automatically engages the locking mechanism to secure the handle in the desired position. This self-service approach improves reliability by ensuring consistent locking without requiring additional complex control systems or multiple separate locking components.
Data Source
AI summary
An article of rolling luggage is provided. The article has a retractable or collapsible handle that is convertible between a stored position and a first extended position of use. The handle is also rotatable about an axis such that the handle can be converted between a second extended position of use. The second extended position of use is characterized in that the luggage item may be provided such that a base portion of the item is substantially adjacent to and parallel with a ground surface. Various locking means to enable conversion between the stored position, first extended position of use and second extended position of use are also provided.