Compact C-Shaped Regulator Key for Hairspring Stability
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Solution Overview
Problem
Current racket systems with anti-shock devices are bulky and do not allow for easy after-sales intervention, such as changing the hairspring, while failing to ensure the play of the hairspring during shocks.
Innovation Solution
A compact racket key with symmetrical axis, C-shaped, flat, and parallel arms that securely hold the hairspring in place using partially hollowed central portions and hooks, allowing adjustment of the hairspring's active length and preventing it from dislodging during shocks, while allowing easy release for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shock-absorbing device is added to prevent the balance spring from dislodging during shocks, then the reliability of the balance spring is improved, but the device becomes bulky and loses adaptability for after-sales intervention
Solution Approach 1:
The patent merges the shock-absorbing function with the regulator key structure itself. The arms of the regulator key are designed to flexibly absorb shocks while maintaining the balance spring in place, eliminating the need for separate shock-absorbing devices. This integration preserves adaptability for after-sales intervention while ensuring reliability during shocks.
2Volume of moving object
If a compact racket key design is used, then the device size is reduced, but it may not provide sufficient protection against shocks
Solution Approach 1:
The regulator key arms are designed with dynamic shock-absorbing characteristics, allowing them to flexibly respond to shock forces. The arms can move and absorb impact energy while maintaining a compact overall structure, thus providing sufficient shock protection without increasing device size.
3Manufacturing precision
If the arms are designed with C-shaped, flat, or parallel faces along the gap, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The patent applies different face geometries (C-shaped, flat, or parallel) to specific local regions of the arms where they contact the balance spring. This localized application of specific geometric qualities ensures precise control of the balance spring while keeping the overall arm structure relatively simple and manageable.
Data Source
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AI summary
The invention relates to an index key, the arms of which allow guaranteed balance spring clearance even in the event of an impact.