Electronic Timepiece Protrusion Support for Date Indicator
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Solution Overview
Problem
Existing electronic timepieces face challenges in efficiently positioning and supporting components like solar panels and date indicators within the limited space of the timepiece case, leading to increased friction and resistance torque during rotation.
Innovation Solution
The electronic timepiece incorporates a rotatable annular member, a substrate with protrusions, and a sheet-like component positioned between the substrate and the annular member. The sheet-like component is controlled in position by the protrusions, and the annular member is supported by these protrusions, minimizing friction and resistance torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple components are assembled closely in the case, then space utilization is improved, but friction and resistance torque increase
Solution Approach 1:
The patent divides the support function into multiple protrusions distributed at different positions (first protrusion supporting the date indicator, second protrusion supporting the solar panel). This segmentation allows each component to be supported at optimized locations, reducing overall friction while maintaining compact arrangement.
Solution Approach 2:
The patent applies different support characteristics at different locations by positioning protrusions at specific locations on the substrate. The first protrusion is positioned to support the date indicator at its first position, while the second protrusion supports the solar panel at its second position, optimizing local support quality for each component.
2Device complexity
If protrusions are used for both positioning and supporting components, then device complexity is reduced, but positioning precision may be compromised
Solution Approach 1:
The patent makes the protrusions serve multiple functions: they act as positioning elements that control the positions of both the date indicator and solar panel, and simultaneously serve as support elements that bear the weight of these components. This multi-functionality reduces the number of separate components needed while maintaining positioning precision through careful design of the protrusion geometry and placement.
Data Source
AI summary
An electronic timepiece includes a rotatable annular member, a substrate having at least one protrusion, and a sheet-like component disposed between the substrate and the annular member. The sheet-like component is controlled in position by the at least one protrusion. The annular member is supported by the at least one protrusion.