Electronic Timepiece Movement with Interchangeable Indicator Wheel Positions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic timepieces with hand position detection mechanisms do not efficiently accommodate multiple hand position detection systems, particularly when configuring subdials at different positions, leading to complexity and increased production costs.
Innovation Solution
The electronic timepiece incorporates a main plate with interchangeable positions for the indicator wheel, allowing for selective configuration of drive wheel trains and detection wheel trains, enabling the detection of hand positions at various subdial locations while reducing part variability and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple hand position detection mechanisms are implemented for different subdial positions, then hand position detection accuracy is improved, but device complexity and production costs increase
Solution Approach 1:
The detection wheel train is designed to perform multiple functions: it detects hand positions for different subdial configurations and also serves as part of the drive mechanism. The same detection wheel train remains stationary while detecting positions of indicator wheels at various configurations (first position, second position, etc.), eliminating the need for separate detection mechanisms for each subdial position.
Solution Approach 2:
The patent merges the detection function with the existing drive wheel train structure. The detection wheel train is integrated into the movement mechanism, sharing space and components with the drive system. This consolidation reduces the overall number of parts and simplifies the detection system while maintaining accurate hand position detection across multiple subdial arrangements.
2Adaptability or versatility
If multiple interchangeable wheel trains are provided for different subdial configurations, then adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
The wheel train system is segmented into modular components that can be selectively assembled. The indicator wheel can be positioned at different locations (first position, second position, etc.) by rearranging modular wheel train segments. This segmentation allows flexible configuration for different subdial arrangements while using standardized components that can be manufactured efficiently.
Solution Approach 2:
The same detection wheel train and motor assembly serve multiple subdial configurations universally. Rather than manufacturing separate detection systems for each subdial position, a single universal detection wheel train design accommodates various indicator wheel positions, significantly reducing manufacturing complexity and production costs.
3Measurement precision
If the detection wheel train moves with the indicator wheel, then detection capability is improved, but mechanical complexity increases
Solution Approach 1:
The patent introduces an intermediary mechanism (the stationary detection wheel train that interacts with the moving indicator wheel through meshing teeth) to transfer motion information. Instead of directly coupling the detection system to the indicator wheel, the intermediary gear engagement allows the stationary detection wheel train to accurately track the position of the moving indicator wheel, simplifying the mechanical linkage while maintaining detection precision.
Data Source
AI summary
Provided is a movement enabling easily providing an indicator position detection mechanism in a movement enabling changing the locations of an indicator by changing the configuration of a wheel train. The movement includes an indicator wheel to which an indicator is attached; a motor that drives the indicator wheel; a detection wheel train used to detect a position of the indicator; and a main plate to which the indicator wheel, the motor, and the detection wheel train are disposed. The main plate is configured to enable selectively disposing the indicator wheel to a first position or a second position that is different from the first position. The detection wheel train is disposed to the same position whether the indicator wheel is disposed to the first position or the second position.