Bracelet Clasp Lever Mechanism for Automatic Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional unfolding buckle clasps with lever systems require manual operation of the lever to both open and close, making the closing process cumbersome and tedious.
Innovation Solution
A lever is pivotably mounted on a cap with a first hinge, controlling a bolt that is pivotably mounted on the cap with a second hinge, using elastic means to keep the lever in a non-raised position and the bolt engaged with a hook when not manually activated, allowing the clasp to lock without needing to handle the lever during closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lever system is used to control the bolt for locking the clasp, then the locking function is achieved, but the lever must be manually operated to both open and close the clasp, making the closing operation cumbersome and tedious
Solution Approach 1:
The clasp closing mechanism uses self-service by implementing a push-button (28) that automatically actuates the bolt (4) to engage with the hook (22) when the clasp is closed. The elastic means (5) automatically return the lever (2) to its initial position after closing, eliminating the need for manual lever operation during closing while maintaining reliable locking through the bolt-hook engagement system.
2Reliability
If elastic means are used to keep the lever in a non-raised position and bolt engaged with hook, then the clasp remains securely locked, but the opening force must be sufficient to overcome the elastic means
Solution Approach 1:
The design allows parameter changes by enabling adjustment of the elastic means (5) characteristics to modify the opening force requirement. The elastic means can be configured with different stiffness values or preloads to match the specific application requirements, balancing the locked position reliability with the acceptable opening force for different bracelet types and user needs.
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 the clasp to be closed and locked without manual operation of the lever, simplifying the process and allowing independent adjustment of the opening force for different types of bracelets by modifying the elastic means.
Implementation Method 1
elastic means being arranged to keep the lever in a non-raised position and the bolt engaged with the hook when said lever is not manually activated
Data Source
AI summary
A bracelet clasp with an unfolding buckle includes a lever (2) pivotably mounted on a cap (1) by a first hinge (3a), the lever controlling a bolt (4) which is in turn mounted on the cap (1) by a second hinge (3b) distinct from the first. The bolt (4) is arranged to cooperate with a hook (22) fitted to the first arm (8) of the clasp. Elastic mechanism (5) is arranged for keeping the lever (2) in a non-raised position and the bolt (4) engaged with the hook (22) when the lever is not manually activated.