Watch Display Wheel Friction Adjustment Mechanism
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Solution Overview
Problem
Existing watchmaking technologies face challenges in achieving precise and easy adjustment of information display components, particularly in calendar-type displays, to ensure high-quality visual alignment and minimal play between components.
Innovation Solution
An adjustment system for a display mechanism using a wheel with a friction portion and resiliently deformable arms to clamp an arbor, allowing axial and radial adjustment of display means without accessing the shaft, ensuring alignment and equalizing play between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional display adjustment mechanisms are used, then the display components can be assembled, but precise alignment and adjustment of information display means is difficult to achieve
Solution Approach 1:
The patent implements a dynamic adjustment mechanism where the wheel can be temporarily decoupled from the arbor during assembly/adjustment phase, allowing precise positioning of display components. After adjustment, the wheel locks onto the arbor to maintain the positioned state. This dynamic transition between adjustable and fixed states resolves the contradiction between ease of adjustment and alignment precision.
Solution Approach 2:
The wheel serves as an intermediary component between the arbor and the display means. It provides a convenient interface for adjustment operations without requiring direct access to the shaft, while ensuring precise transmission of rotational motion to the display components. The wheel's design with friction engagement and locking features enables both easy adjustment and precise positioning.
2Reliability
If the wheel is firmly fixed to the arbor, then rotation is prevented, but adjustment of display means position becomes difficult without accessing the shaft
Solution Approach 1:
The connection between wheel and arbor is designed to be dynamic rather than static. During normal operation, friction and mechanical engagement provide firm fixing. During adjustment, the connection can be temporarily overcome by applying sufficient force to overcome static friction, allowing the wheel to be repositioned on the arbor. This resolves the contradiction between connection stability and ease of adjustment.
Solution Approach 2:
The adjustment mechanism is self-contained in the wheel assembly itself, without requiring external tools or access to the shaft. The wheel's own structure provides the adjustment capability through its friction engagement and locking features, making the system self-sufficient for adjustment operations.
3Adaptability or versatility
If multiple display components are assembled, then complete functionality is achieved, but play between components affects visual quality
Solution Approach 1:
The adjustment mechanism enables preliminary positioning of display components during assembly before final locking. The wheel can be positioned on the arbor at the desired location, allowing alignment adjustments to be made while the system is still in an adjustable state. This preliminary action ensures precise alignment before the wheel locks onto the arbor, eliminating play between components.
Solution Approach 2:
The system allows changing the positional parameters of display components during assembly through the adjustable wheel mechanism. By modifying the position of the wheel on the arbor, the alignment parameters of connected display components can be optimized to eliminate play and achieve precise visual alignment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simple, quick, and precise adjustment of display components, maintaining alignment and minimizing play, enhancing visual clarity and ease of assembly.
Implementation Method 1
at least two resiliently deformable arms, the arms connecting the friction portion to the peripheral part of the wheel in order to clamp the arbor and prevent rotation and/or translation of the wheel on the arbor below a predefined force
Implementation Method 2
a friction portion at the central opening and comprising friction zones around the arbor to hold the wheel on the arbor
Data Source
AI summary
An adjustment system for a display mechanism including a wheel arranged to pivot with an arbor, the wheel having a peripheral part defining a central opening for receiving the arbor; an information display rigidly connected to the peripheral part of the wheel; a friction mechanism having a friction portion at the central opening and including friction zones around the arbor to hold the wheel on the arbor; at least two resiliently deformable arms, the arms connecting the friction portion to the peripheral part of the wheel in order to clamp the arbor and prevent rotation and/or translation of the wheel on the arbor below a predefined force.