Timepiece Correction Mechanism With Flexible End for Accurate Indexing
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Solution Overview
Problem
Existing correction mechanisms for timepiece movements, such as those used for date and lunar phase indicators, often lack robustness due to the inability of the jumper to overcome resistance torques and friction, leading to incomplete or unreliable gear wheel positioning during function corrections.
Innovation Solution
A correction mechanism incorporating a flexible free transmission end with an elastic member that increases travel and allows the corrector to move the gear wheel to a final indexed position without causing movement of the clockwork part, enhancing the mechanism's robustness and correction accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid corrector is used in the correction mechanism, then the structure is simple and robust, but the travel is insufficient to reliably position the gear wheel in the final indexed position
Solution Approach 1:
The corrector incorporates an elastic member that changes its physical state from rigid to flexible, allowing it to extend beyond its neutral position. This parameter change enables the corrector to achieve greater travel distance while maintaining structural integrity, thereby reliably positioning the gear wheel in the final indexed position.
2Stability of the object's composition
If the jumper slope is made shallow to avoid undesirable dynamic effects, then dynamic stability is improved, but the ability to overcome resistance torques and friction is reduced
Solution Approach 1:
The correction mechanism transitions from a static rigid corrector to a dynamic flexible corrector with an elastic member. This dynamic element can adapt its stiffness and travel during operation, allowing the system to overcome resistance torques effectively while maintaining dynamic stability through controlled deformation rather than relying solely on shallow jumper slopes.
3Measurement precision
If the corrector travel is increased to ensure reliable gear wheel positioning, then correction accuracy is improved, but the mechanism complexity increases
Solution Approach 1:
The corrector uses an elastic member that functions as a flexible element, allowing increased travel distance without adding complex mechanical components. The flexibility of the elastic member enables greater correction accuracy while maintaining relatively simple mechanism architecture, as the flexibility is inherent in the material rather than achieved through complex linkages.
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
The mechanism simplifies function corrections by increasing the maximum correction travel, improving robustness, and ensuring the gear wheel is accurately positioned, thereby enhancing the reliability of display functions in timepieces without requiring additional parts or space.
Implementation Method 1
said corrector having a flexible free transmission end for a movement, notably provided with an elastic member
Data Source
AI summary
A correction mechanism for a function of a movement for a timepiece, notably a display function, including a corrector, and at least one clockwork part, notably a gear wheel, in which the clockwork part can be driven by a movement cooperating with a flexible transmission end of a movement.