Escapement Mechanism Function Separation for Energy Efficiency
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Solution Overview
Problem
Existing escapement mechanisms in mechanical watchmaking fail to adjust the draft of escapement wheels to achieve sufficient locking force while minimizing energy consumption, leading to potential advances in time and overconsumption of energy.
Innovation Solution
The escapement mechanism separates locking and unlocking functions from winding functions, using a detent rocker with locking lugs and a winding cam to block escapement wheel rotation intermittently, allowing the regulator to trigger release independently of the leaf spring, and incorporates levers and a return spring to synchronize winding and locking phases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the draft of escapement wheels is adjusted to increase locking force, then the reliability of the escapement mechanism is improved, but the energy consumption increases
Solution Approach 1:
The escapement mechanism is divided into functionally independent components: a detent rocker assembly handling locking/unlocking operations with locking lugs, and a separate winding rocker assembly handling energy storage. This segmentation allows each component to be optimized for its specific function, reducing the energy required for locking while maintaining reliability
Solution Approach 2:
The detent rocker acts as an intermediary component that mediates between the escapement wheels and the regulator. By introducing this intermediate element with strategically positioned locking lugs, the system achieves reliable locking through geometric constraints rather than relying solely on high locking forces, thereby reducing energy consumption
2Device complexity
If the escapement mechanism uses a single integrated rocker for both winding and triggering functions, then the device complexity is reduced, but the precision of energy transfer and timing control deteriorates
Solution Approach 1:
The single integrated rocker is segmented into separate functional assemblies: the detent rocker with locking lugs for precise timing control, and the winding rocker for energy accumulation. This segmentation enables each component to be precisely engineered for its specific function while maintaining overall system manageability
Solution Approach 2:
The detent rocker assembly serves multiple functions: it provides locking through locking lugs, enables precise timing control through its connection to the regulator, and facilitates energy transfer. This multi-functionality is achieved through careful geometric design rather than mechanical integration, maintaining precision while avoiding excessive complexity
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
This separation of functions enhances the locking and winding processes, improving the power reserve and reducing energy consumption by ensuring precise control over the escapement mechanism's operation.
Implementation Method 1
The leaf spring 2 is capable of accumulating the energy from the driving source between two pulses
Implementation Method 2
a leaf spring working in buckling around a inflection point
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An escapement mechanism arranged to transmit mechanical energy pulses from a driving source to an oscillating regulator of a timepiece via a leaf spring (2) operating in buckling around an inflection point, said leaf spring (2) being capable of accumulating energy from the driving source between two pulses and transmitting it to said oscillating regulator at each pulse via a winding rocker (3) cooperating with the leaf spring (2) and a release rocker (20) adapted to cooperate with at least one escapement wheel (28) receiving energy from the driving source to intermittently block its rotation, characterized in that the winding and release rockers and the escapement wheel are arranged relative to the leaf spring (2) such that the locking and unlocking functions of said escapement wheel (28), on the one hand, and the winding functions of the leaf spring (2) on the other hand,are dissociated,