Watch Strap Attachment Device for Flexible Single-Strand Compatibility
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Solution Overview
Problem
Existing watch bracelets, particularly flexible single-strand bracelets, face challenges in compatibility with watch cases having insufficient lug distance or incompatible interfaces, requiring complex operations and multiple parts for attachment, which complicates ease of use and interchangeability.
Innovation Solution
A flexible, one-piece watch strap with a removable attachment device featuring a passage opening or slot that allows the strap to be attached to a watch case without requiring tools, using a movable locking member and half-links to simplify manufacturing and assembly, enabling attachment to watch cases with non-standard lug distances or interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-strand flexible strap is used, then the strap design is simplified, but it cannot be attached to watch cases with insufficient lug distance or incompatible interfaces
Solution Approach 1:
The patent introduces an intermediary attachment device that mediates between the single-strand flexible strap and the watch case. This attachment device includes a first attachment portion that connects to the watch case and a second attachment portion that connects to the strap, enabling compatibility without modifying the simple single-strand strap design.
Solution Approach 2:
The attachment device is segmented into distinct functional portions: a first attachment portion for engaging with the watch case and a second attachment portion for engaging with the flexible strap. This segmentation allows each portion to be optimized for its specific function while maintaining overall simplicity.
2Adaptability or versatility
If removable attachment devices are added to enable compatibility, then adaptability to different watch cases is improved, but the number of parts and manufacturing complexity increases
Solution Approach 1:
The patent merges the attachment functionality into a single integrated attachment device that combines both the watch case interface and the strap interface. This consolidation reduces the number of separate parts compared to traditional systems while maintaining adaptability to different watch cases.
Solution Approach 2:
The attachment device is designed with universal adaptability, where the first attachment portion can engage with various watch case interfaces through standardized bar configurations. This multi-functionality allows a single attachment device design to work across different watch models without requiring multiple specialized components.
3Reliability
If complex attachment operations are required, then secure attachment is achieved, but ease of use and interchangeability are reduced
Solution Approach 1:
The attachment device incorporates self-service features where the locking mechanism can be operated directly by the user without requiring tools or specialized equipment. The design allows users to easily attach and detach straps through intuitive manual operations while maintaining secure attachment.
Solution Approach 2:
The attachment device uses dynamic locking mechanisms that transition between locked and unlocked states through simple user actions. The movable elements allow for easy attachment and detachment while ensuring reliable securing when engaged, balancing ease of operation with attachment security.
Data Source
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AI summary
bracelet arranged to be attached to a watch case (100) comprising two first attachment interfaces such as two first bars (101), the removable bracelet assembly comprising: - a flexible strand (200), - two attachment devices each comprising: - a first attachment portion (A) arranged to attach removably to one of the first attachment interfaces of the watch case (100), - a second attachment portion (B) comprising a passage opening such as a slot (60) formed by a second bar (30), arranged to attach the bracelet, characterized in that each passage opening forms a loop in which the flexible strand (200) is arranged slidably.