Cufflink Key with Pivoting Bar for Concealed Unlocking
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Solution Overview
Problem
Conventional cufflinks do not provide a functional key feature, limiting their utility beyond fashion accessories, particularly in situations requiring a key for unlocking locks like handcuffs.
Innovation Solution
A combined cufflink and key design featuring a decorative head with a grippable peripheral portion, an elongate shaft, and a pivotally connected elongate bar that can be rotated between locking positions to function as both a cufflink and a key, with a key feature at the distal end of the elongate bar for unlocking locks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cufflink is designed with only decorative and fastening functions, then its simplicity and fashionability are maintained, but its utility in emergency situations (such as unlocking handcuffs) is lost
Solution Approach 1:
The cufflink is designed to perform multiple functions: it serves as both a decorative fastening accessory and a functional key for unlocking locks. The elongate bar can be pivoted to different positions, and when aligned with the shaft, the distal end of the bar functions as a key feature that can be inserted into and rotated within a lock mechanism, thereby unlocking it.
Solution Approach 2:
The elongate bar is pivotally connected to the shaft, allowing it to be dynamically positioned. It can be rotated between a first locking position (aligned with the shaft for key functionality) and a second locking position (substantially perpendicular to the shaft for cufflink functionality). This dynamic repositioning enables the cufflink to adapt between its two functional modes.
2Reliability
If a key feature is integrated into a cufflink, then emergency utility is provided, but the cufflink becomes identifiable as a key rather than purely fashion accessory
Solution Approach 1:
The key feature is located specifically at the distal end of the elongate bar, which is one of several localities on the cufflink. This localized key feature allows the cufflink to function as a key without requiring the entire object to be identifiable as such. The decorative head and shaft maintain the fashion accessory appearance while the specific distal end of the bar provides the concealed key functionality.
3Adaptability or versatility
If the elongate bar is made pivotally movable between locked positions, then dual functionality is enabled, but the manufacturing complexity increases
Solution Approach 1:
The cufflink is divided into distinct segments: a decorative head, a shaft, and an elongate bar that is pivotally connected to the shaft. This segmentation allows each component to be manufactured separately and then assembled through the pivotal connection, which simplifies the overall manufacturing process compared to creating a fully integrated complex mechanism.
Data Source
AI summary
This invention provides a combined fashion accessory and key. The fashion accessory includes a decorative head having front and back sides, an elongate shaft having first and second opposed ends. The first end of the elongate shaft is attached to the back side of the decorative head, and an elongate bar is pivotally connected to the second end of the elongate shaft. The elongate bar has at least one key feature at a first end thereof so that the elongate bar is a key. When the elongate bar is longitudinally aligned with said elongate shaft in a second locking position, the decorative head, in combination with the elongate shaft and the elongate bar provides a key functionality such that when the key feature is inserted into a lock and a user grips a grippable peripheral portion of the decorative head and rotates it, torque is applied to the elongate bar thus rotating it and the key feature to unlock the lock.