Clock Movement Function Selector Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mechanisms for selecting and actuating functions in watch movements are limited to two functions and lack the capability for bidirectional operation, often being complex and prone to imprecision.
Innovation Solution
A mechanism comprising a winding stem, a function actuation device kinematically linked to the crown, a selector device, and a safety device that allows for the selection and actuation of multiple functions (n ≥ 2) with bidirectional operation, using a single actuating wheel set and a pivoting base with tracks to guide the actuation device, enabling cooperation with multiple actuating members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanism is designed to select and actuate only two functions, then the structure is simple, but the adaptability is limited
Solution Approach 1:
The patent implements a universal actuation device that can perform multiple functions (date correction, winding, time-setting) through a single integrated mechanism. The actuating device is designed to cooperate with different actuating members depending on the selected function, eliminating the need for separate mechanisms for each function and achieving multi-functionality without proportionally increasing complexity
Solution Approach 2:
The patent employs dynamic positioning of the actuating device that can move between different selection positions and actuation positions. The device transitions from a static two-position design to a dynamic multi-position system where the actuating device can be positioned at n selection positions and n actuation positions, enabling flexible adaptation to different functions while maintaining a unified structural framework
2Adaptability or versatility
If a mechanism uses multiple levers and cams for function selection, then the number of functions can be increased, but the manufacturing precision requirements increase and the structure becomes more complex
Solution Approach 1:
The patent replaces the traditional lever-and-cam mechanical selection system with a simplified actuating device that uses a different mechanical principle. Instead of relying on precise cam profiles and lever intersections, the invention uses a movable actuating device that can be positioned at discrete selection positions and engaged with corresponding actuating members, reducing the precision requirements for component manufacturing while maintaining the capability to select multiple functions
3Ease of operation
If a mechanism allows bidirectional operation for function correction, then the usability is improved, but the device complexity increases
Solution Approach 1:
The patent combines the selection function and actuation function into a single integrated actuating device. The device merges the capabilities of selecting a function and actuating it into one unified mechanism, allowing bidirectional operation (incrementing and decrementing) without requiring separate mechanisms for each direction. This integration achieves ease of operation while controlling device complexity through consolidation rather than multiplication of components
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a mechanism for selecting and actuating n functions of a clock movement, where n is an integer no lower than 1, preferably no lower than 2, more preferably no lower than 3, including a winding mechanism rod (2) ending in a crown, a device (4) for actuating a function, said device being kinematically connected to the crown and arranged such as to move and assume n selection positions and n actuation positions in which the actuation device (4) is kinematically connected to an actuation member (21, 22, 23) of the selected function, and a selecting device (6) arranged such as to move the actuation device (4) into a selection position. According to the invention, said mechanism further includes a base (32) onto which the actuation device (4) is moveably mounted such as to be moved and positioned, by the selecting device (6), into a selection position facing the actuation member (21, 22, 23) of the selected function, and such as to be moved, by an axial movement of the winding mechanism rod (2), into the actuation position thereof in order to engage with said actuation member (21, 22, 23) of the selected function.