Timepiece Correction Device with Bidirectional Control Wheel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing timepiece correction systems are limited in their ability to bidirectionally correct multiple time functions without compromising aesthetics or risking mechanical failure, as they often require additional components or unidirectional operations.
Innovation Solution
A correction device featuring a function change pusher that moves a control wheel to engage with a correcting pinion, combined with a rod that rotates to drive the corrector pinion for bidirectional correction of chosen functions, allowing for the selection and modification of multiple time functions without additional stems or complex mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a stem-crown is used for correction, then bidirectional correction is enabled, but the choice is limited to two functions
Solution Approach 1:
The correction mechanism is segmented into multiple independent corrector pinions (first corrector pinion, second corrector pinion, etc.), each responsible for a different time function. The control wheel can selectively engage with any of these pinions, allowing bidirectional correction of multiple functions through a single stem-crown interface.
Solution Approach 2:
The control wheel is designed as a universal interface that can engage with multiple different corrector pinions. By rotating the control wheel to different positions, the same stem-crown mechanism can correct different time functions (hours, minutes, date, day of week, month) without requiring separate correction mechanisms for each function.
2Adaptability or versatility
If multiple pushers are added for correcting different functions, then versatility is improved, but the risk of mechanical breakage increases
Solution Approach 1:
Multiple correction functions are merged into a single integrated mechanism. Instead of having separate pushers for each function, the invention combines all correction operations into one stem-crown assembly with a control wheel that selects between multiple corrector pinions. This reduces the number of independent mechanical components and potential failure points.
Solution Approach 2:
The control wheel acts as an intermediary between the single stem-crown input and multiple corrector pinions. It selectively transmits the correction motion to the appropriate pinion based on its rotational position, allowing one input mechanism to control multiple functions without requiring multiple independent pushers.
3Shape
If embedded pushers are used in the caseband, then aesthetics are maintained, but unidirectional operation is limited
Solution Approach 1:
The stem-crown assembly serves as a universal correction interface that provides bidirectional rotation capability for all time function corrections. This eliminates the need for separate unidirectional pushers embedded in the caseband, maintaining aesthetic integrity while enabling full bidirectional correction of multiple functions through a single accessible component.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The device has a pusher (1) whose actuation unit moves a control wheel (2) for changing function, where the actuation unit meshes the wheel with corrector pinions (3-5) for selecting the function. A stem (7) is covered with a crown (8) that is rotated in a direction. The crown pivots the control wheel to drive the corrector pinions to correct the data of the selected function. The stem is located in three axial positions such as pushed-in operating position (T1), first pulled-out position (T2) and second pulled-out position (T3), for setting the time of a timepiece.