Watch Crown Control for Independent Rotation and Push Functions
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Solution Overview
Problem
Existing watch mechanisms require multiple control elements for various functions, leading to complex constructions, potential water resistance issues, and compromised aesthetics due to the distribution of control mechanisms around the case.
Innovation Solution
A single control element comprising a crown and a control rod that allows for both axial translation and rotation, enabling independent control of two distinct functions by being fixed in rotation to a first actuating device for a first function and movable in axial translation for a second function, with a safety device to prevent accidental activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple control elements are used for different functions, then each function can be controlled independently, but the construction complexity increases and water resistance is compromised
Solution Approach 1:
The patent combines multiple control functions into a single integrated control element. The crown is configured to perform both rotational movement for time setting and axial push-button movement for complication activation, eliminating the need for separate control elements and simplifying the overall construction while maintaining independent control of different functions
Solution Approach 2:
The control element is designed with multi-functionality, allowing the crown to serve multiple purposes: rotational movement for winding and time setting, and axial translation for activating chronograph or other complication functions. This universal design reduces the total number of control elements needed
2Adaptability or versatility
If multiple control elements are distributed around the case, then different functions can be accessed, but the aesthetics are compromised and water resistance is impacted
Solution Approach 1:
By merging multiple control functions into a single crown element located at the traditional 3 o'clock position, the patent maintains a clean, minimalist case design without additional buttons or controls distributed around the case, thereby preserving aesthetics while providing comprehensive function accessibility
3Adaptability or versatility
If a push-button mechanism is added to the crown, then a third function can be activated, but the crown construction becomes complex and position adjustment is needed to prevent accidental activation
Solution Approach 1:
The crown incorporates dynamic movement capabilities, allowing it to rotate for time setting and translate axially for complication activation. This dynamic design enables multiple functions to be controlled through a single element without requiring complex internal mechanisms or multiple separate controls
Solution Approach 2:
The crown is designed as a universal control element that can perform multiple functions: rotational movement for winding and time setting, and axial push-button movement for activating chronograph or other complication functions, eliminating the need for separate control mechanisms
Data Source
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AI summary
The present invention relates to a control member (1) of a plurality of different functions of a timepiece movement, the control member (1) comprising a crown (2) and a control stem (3) designed to be integral at least in rotation with the crown (2), the control stem (3) being integral in rotation with a first actuating device of a first function, the crown (2) being designed in order, in response to a pressure, to be movable in axial translation between a rest position and a depressed position in which a second function, separate from the first function, is actuated, and to return to its rest position when the pressure on the crown (2) ceases, the crown (2) also being designed to be, in the rest position, movable in axial rotation in at least one direction between at least one stable angular position and at least one actuating angular position so as to actuate, by rotation of the crown (2) in said direction, the first function via the rotation of the control stem (3). The control stem (3) is designed so as to likewise be integral in axial translation with the crown (2) so as to be movable in axial translation with the crown (2) during the movement of the crown (2) into its depressed position, and to be free in axial translation relative to the first actuating device, the control stem (3) being designed to cooperate with a second actuating device of the second function during the movement of the crown (2) into its depressed position in order to actuate the second function. The present invention also relates to a timepiece comprising at least one such control member.