Luggage Handle Locking Mechanism with Rotating Grip
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Solution Overview
Problem
Existing luggage handle mechanisms lack secure and convenient height adjustment capabilities, compromising user experience and security.
Innovation Solution
A luggage handle mechanism featuring a handle axle with a rotating grip portion, a sheath, an elongate member, a locking/unlocking system, and an interface system that allows the handle to lock/unlock at various extension positions by rotating the grip portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a handle mechanism is designed to be extendable and retractable with locking capability, then the security and stability of the handle are improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into a single integrated support member that houses both the locking/unlocking system and the interface system. The support member integrates the housing for the handle axle portion, the interface system actuation mechanism, and the guide/stop walls, thereby reducing overall device complexity while maintaining reliable locking capability through functional consolidation rather than separate components
Solution Approach 2:
The support member serves multiple functions simultaneously: it houses the handle axle portion, contains the interface system, provides guide walls for rotational movement, and acts as a stop for the locking/unlocking system. This multi-functionality approach improves reliability without proportionally increasing complexity by making each component do more work
2Ease of operation
If the handle mechanism allows adjustment at any height through rotation, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The interface system is designed to be automatically actuated by the handle axle's own rotational movement. As the handle axle rotates to different positions, the interface system automatically engages or disengages the locking/unlocking system without requiring additional user actions or complex control mechanisms, thereby maintaining ease of operation while reducing manufacturing precision demands through self-regulating geometry
Solution Approach 2:
The mechanism transitions from a static locking system to a dynamic one where the locking state changes automatically with the rotational position of the handle axle. The interface system dynamically engages the locking/unlocking system based on the axle's position, allowing continuous adjustment while maintaining security through motion-dependent locking rather than fixed-position locking
Data Source
AI summary
An item of luggage includes an extendable and retractable handle mechanism having a handle axle to which a grip portion is mechanically connected. An elongate member is mounted to be movable in translation relative to a fixed sheath partly housing a locking/unlocking system, which is mechanically connected to elongate member. An interface system is actuated by the handle axle and actuates the locking/unlocking system. A support member forms a housing for a portion of the handle axle and the interface system. The support member includes a wall forming a guide and a stop for rotational movement of the interface system and of the handle axle between first and second positions of the grip portion and the handle axle. In the first position, the locking/unlocking system locks the handle in a selected position. In the second position, obtained by the rotation of the grip portion, the locking/unlocking system unlocks the handle.