Magnetic Watch Strap Connection Mechanism for Tool-Free Replacement
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Solution Overview
Problem
Conventional watch straps are difficult to disassemble and replace, often requiring specialized tools and risking damage to other accessories due to their spring needle structure.
Innovation Solution
A magnetic attraction force-based connection system between the watchcase and watch strap, featuring a magnetic latching structure with a connection head, engagement bolt, and second magnet, allowing for easy disassembly and replacement without damaging other accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring needle structure is used to connect the watch strap, then the connection is secure and reliable, but the watch strap becomes difficult to disassemble and replace, requiring specialized tools and risking damage to other accessories
Solution Approach 1:
The patent replaces the traditional mechanical spring needle structure with a magnetic field-based connection system. Magnets embedded in the connection heads provide secure attachment through magnetic attraction, eliminating the need for spring needles and specialized disassembly tools. The magnetic connection allows for easy separation by simply pulling the components apart, while maintaining reliable holding force during normal wear.
2Reliability
If a spring needle structure is used to connect the watch strap, then the connection is secure, but the replacement process risks scratching other accessories
Solution Approach 1:
By replacing the mechanical spring needle system with a magnetic connection system, the patent eliminates the scratching risk associated with metal spring needles contacting other accessories during insertion and removal. The magnetic field provides secure connection without physical contact that could cause damage to surrounding components.
3Ease of operation
If a magnetic latching structure is used to connect the watch strap, then the replacement becomes easy and convenient, but the connection strength may be reduced compared to spring needle structures
Solution Approach 1:
The patent optimizes the magnetic connection strength by carefully selecting magnet materials, sizes, and configurations to achieve the appropriate holding force. The magnetic field strength is tuned to provide secure attachment during normal wear while allowing easy separation when force is applied, resolving the contradiction between connection strength and ease of replacement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables convenient and tool-free replacement of watch straps, suitable for various materials like rubber, metal, and metal mesh, without scratching other accessories.
Implementation Method 1
a first magnet is attached onto an inner surface of the watch strap... a second magnet is disposed at a top portion of the engagement bolt
Data Source
AI summary
The application relates to a structure of a watch strap and a watchcase connected based on a magnetic attraction force. Two ends of the watchcase each are provided with a connection head, and two ends of the watch strap each are provided with a magnetic latching structure cooperated with the connection head. The magnetic latching structure includes a connecting head receiving recess and a first magnet. An opening matched with an engagement bolt is defined in the watch strap, the opening and the first magnet are positioned at two opposite sides of the connecting head receiving recess, the engagement bolt is positioned in the opening, a hollow groove is defined in the connection head and matched with the engagement bolt, and a second magnet is disposed at a top portion of the engagement bolt.