Adjustable Bracelet Link With Concealed Tool-Free Locking Mechanism
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Solution Overview
Problem
Existing adjustable fastening mechanisms for bracelets and similar objects require tools for adjustment and are visible, making them less aesthetically appealing and less convenient for precise re-positioning.
Innovation Solution
An adjustable link mechanism using two half-links that move in a longitudinal direction, with a connecting and locking member and complementary locking means defining discrete locking positions, allowing adjustment without tools and concealing the mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional adjustable fastening mechanisms are used, then precise positioning is achieved, but the mechanism requires tools for adjustment and remains visible
Solution Approach 1:
The locking means and elastic return means are merged into an integrated assembly where the elastic element is contained within the locking mechanism, eliminating the need for separate tool-operated locking devices and reducing overall structural complexity
Solution Approach 2:
The elastic return means automatically returns the locking means to its initial position after adjustment, providing self-service functionality that eliminates the need for tools and manual resetting operations
2Ease of operation
If traditional adjustable fastening mechanisms are used, then precise positioning is achieved, but the mechanism is visible and detracts from aesthetic appeal
Solution Approach 1:
The elastic return means is nested within the locking means structure, with the elastic element contained inside the locking assembly, making the adjustment mechanism compact and suitable for concealment within the bracelet link
3Volume of moving object
If the adjustable link is made compact, then aesthetic appeal is improved, but the mechanism requires significant space for operation
Solution Approach 1:
The elastic return means operates in a direction transverse to the longitudinal movement of the locking means, allowing compact longitudinal dimensions while providing sufficient space for the elastic element to function in the transverse dimension
4Reliability
If the locking means is made robust, then reliability is improved, but the force required for adjustment increases
Solution Approach 1:
The elastic return means replaces complex spring mechanisms or cam-based return systems with a simpler elastic element that provides reliable resetting force while requiring minimal activation force from the user
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 precise and tool-free adjustment of bracelet length while maintaining a compact and concealed mechanism, enhancing both functionality and aesthetics.
Implementation Method 1
a return means for returning the adjustable link to a shortened position
Data Source
AI summary
An adjustable link for a bracelet, including first and second half links longitudinally moveable via cooperation of a guide and a complementary guide, and captived by cooperation of a stopping mechanism and a complementary stopping mechanism. The first half link includes a longitudinal finger with a locking mechanism including a radial elastic return moveable between folded and unfolded positions, and the second half link includes a longitudinal channel allowing the finger to pass in only one of the folded or unfolded positions, and, in proximity to the channel, a complementary locking mechanism cooperating, in at least one locking position, with the locking mechanism in the other of the folded or unfolded positions, the locking mechanism and complementary locking mechanism together defining at least two of the longitudinally separate locking positions.