Adjustable Link System for Watch Bracelets
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Solution Overview
Problem
Existing watch and jewelry bracelets lack a mechanism for precise and aesthetically pleasing length adjustment that does not require tools and avoids the bulkiness and awkwardness of traditional clasps, while ensuring reliable locking and easy maneuverability.
Innovation Solution
An adjustable link system comprising a first and second structural element with a hidden spacing adjustment mechanism, featuring moveable jaws and push-buttons that allow for discrete longitudinal positioning without visible mechanisms, enabling easy length adjustment without a clasp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional clasp mechanism is used for bracelet adjustment, then the bracelet can be adjusted in length, but the clasp becomes bulky, heavy, and impairs the aesthetics of the bracelet
Solution Approach 1:
The patent extracts the adjustment function from a traditional bulky clasp mechanism and integrates it directly into the link structure itself. The adjustment mechanism is built into the link, eliminating the need for a separate clasp component, thereby maintaining aesthetics while enabling adjustment.
Solution Approach 2:
The patent merges the adjustment mechanism with the link structure by integrating the ratchet teeth, push plate, and locking projection directly into the link components. This consolidation eliminates separate adjustment devices and maintains a sleek, continuous appearance.
2Ease of operation
If a visible adjustment mechanism is used, then the bracelet can be adjusted easily, but the mechanism remains visible and impairs the aesthetics
Solution Approach 1:
The patent nests the adjustment mechanism components (ratchet teeth, push plate, locking projection) within the link structure itself. The mechanism is concealed inside the link boundaries, making it invisible from the outside while remaining fully functional.
Solution Approach 2:
The patent uses the link structure itself as an intermediary that houses and conceals the adjustment mechanism. The link acts as both the structural element and the container for the adjustment components, hiding them from view.
3Device complexity
If a simple friction-type closure is used, then the bracelet structure is simple, but it does not offer precise repositioning capability
Solution Approach 1:
The patent transitions from a static friction-based closure to a dynamic ratchet-based mechanism that allows controlled movement and precise positioning. The ratchet teeth engage with the locking projection to lock the link at specific positions, enabling precise repositioning while maintaining operational simplicity.
4Adaptability or versatility
If an adjustable mechanism with gap at connecting member is used, then the link can be adjusted, but the gap impairs the appearance of the bracelet
Solution Approach 1:
The patent segments the link into first and second structural elements that can move relative to each other for adjustment, while the attachment means at the ends maintain continuous appearance. The segmentation enables adjustment functionality without creating visible gaps in the overall bracelet structure.
Data Source
AI summary
An adjustable link (10) for watch or jewellery bracelet (100), including a first element (1) and second element (2) assembled by spacing adjustment means (30) according to discrete positions, the first element (1) including a transverse chamber (15) enclosing two jaws (12A; 12B) returned one towards the other by springs (13A; 13B) and including notches (120A; 120B) for immobilising in various longitudinal positions (D) a stop element (5) integral with the second structural element (2), these jaws (12A; 12B) being disengageable by transverse push-buttons (3A; 3B), each including a protrusion or recess (31) continuously engaging with an complementary protrusion or recess (131) of the first structural element (1) for protecting the spacing adjustment means (30) against the insertion of foreign bodies, and for hiding same from the view of the user.