Adjustable Bracelet Clasp With Multi-Site Loop For Length Tuning
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Solution Overview
Problem
Existing bracelet clasps with unfolding buckles lack a simple and discreet mechanism for adjusting the usable length, often requiring tools and resulting in loss of adjustment when the clasp is opened, and are not adaptable to different hole pitches in commercially available bracelets.
Innovation Solution
A bracelet clasp with a loop having multiple sites along its longitudinal direction for anchoring a lug, allowing easy adjustment by screwing the lug into different positions, and an additional lug that can be aligned to accommodate various hole pitches, enabling flexible length adjustment without tools and ensuring compatibility with various bracelets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a clasp with an unfolding buckle comprises a device for adjusting the usable length of the bracelet with multiple sites for the lug, then the adaptability to different hole pitches is improved, but the device complexity increases
Solution Approach 1:
The loop is divided into multiple discrete sites (first site, second site, third site) along its longitudinal direction, each capable of receiving the lug at different positions. This segmentation allows the clasp to accommodate different hole pitches in bracelets by selecting appropriate sites, achieving adaptability without requiring a completely different clasp design for each bracelet type.
Solution Approach 2:
The loop with multiple sites serves multiple functions: it provides anchoring points for the lug, enables adjustment of bracelet length, and ensures compatibility with various hole pitches. This multi-functionality is achieved within a single clasp structure, avoiding the need for multiple specialized clasps.
2Ease of operation
If the loop has multiple sites for anchoring the lug, then the ease of adjustment is improved, but the loss of adjustment when clasp is opened worsens
Solution Approach 1:
The sites are pre-positioned on the loop at specific locations that correspond to different bracelet lengths. The lug is designed to be insertable into these pre-positioned sites, allowing the user to quickly adjust the bracelet length by simply moving the lug to the appropriate site without requiring complex adjustment mechanisms or tools.
Solution Approach 2:
The clasp structure itself provides the adjustment functionality through the multiple sites on the loop and the corresponding lug positioning. The system is self-contained and does not require external tools or additional adjustment mechanisms, making the adjustment process simple and reliable.
3Adaptability or versatility
If the clasp structure includes multiple sites and lugs for adjustment, then the adaptability to various bracelets is improved, but the ease of manufacture worsens
Solution Approach 1:
The loop is segmented into multiple sites that can be manufactured as discrete features on the loop structure. This segmentation allows for standardized manufacturing processes where the loop can be produced with multiple pre-positioned sites, and the lug can be separately manufactured and then positioned into the appropriate sites, simplifying the overall manufacturing process.
Solution Approach 2:
The loop with multiple sites is designed as a universal component that can accommodate various bracelet types and hole pitches. This universal design allows the same loop structure to be used across different clasp configurations and bracelet types, reducing the need for multiple specialized components and simplifying manufacturing.
Data Source
AI summary
A bracelet clasp having an unfolding buckle, including first and second strips hinged to each other via a first of the respective ends thereof, between a closed position for wear, and at least one open position, the first strip carrying a fastening for a first bracelet strand, the second, bottom strip carrying a loop at the second end thereof defining a recess for a second bracelet strand and carrying a lug to be inserted in a suitable hole in the bracelet strand to define a point of anchorage of the bracelet to the clasp. The loop has a plurality of sites, substantially aligned along the longitudinal direction of the bracelet, each of which is configured to cooperate with the lug to ensure the assembly thereof to the loop and to define a predefined position of the point of anchorage associated with a predefined usable length of the bracelet.