Flying Bridge Timepiece Movement Design
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Solution Overview
Problem
Complicated timepieces face challenges in accommodating multiple mechanisms and visual elements due to lack of volume in the movement, often requiring increased thickness and hiding display elements on the backside, which limits visibility and design flexibility.
Innovation Solution
A timepiece movement with a main frame and flying bridges that support functional elements like display members and regulating systems kinematically connected via a flying gear train, eliminating the need for bearings on the main frame, allowing for space-saving design and enhanced visibility of displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If mechanisms are arranged on additional levels to accommodate multiple functions, then the volume for arranging mechanisms is increased, but the movement thickness increases requiring a cumbersome watch case
Solution Approach 1:
The patent transitions from a conventional two-dimensional arrangement of mechanisms on stacked levels to a three-dimensional configuration using a flying bridge that extends horizontally across the movement. The flying bridge creates a new spatial dimension by supporting mechanisms above the main plate level, allowing functional elements to be positioned in the gap between the main frame and the glass/caseback rather than requiring additional vertical stacking. This dimensional change enables complex mechanisms to be arranged in available horizontal space without increasing movement thickness.
2Volume of moving object
If display elements are arranged on the back side of the piece, then space is utilized for visual elements, but the elements are not visible when the watch is worn requiring removal and turning over
Solution Approach 1:
The flying bridge positions display elements and other visual features in the vertical gap between the main frame and the glass or caseback, creating a new viewing dimension. Instead of placing displays on the rear surface that require the watch to be removed and flipped, the elements are elevated to a position where they can be viewed through the transparent glass or caseback while the watch is being worn on the wrist. This spatial repositioning maintains space utilization while enabling continuous visibility during normal use.
3Ease of manufacture
If a conventional bearing arrangement on the main frame is used, then the escapement system can be arranged traditionally, but design freedom and space utilization are limited
Solution Approach 1:
The patent segments the support structure by introducing a flying bridge as a separate, independent element that is not rigidly attached to the main frame. The flying bridge carries the escapement system and other functional elements, separating them from the main frame structure. This segmentation allows the escapement to be positioned and configured independently, providing design freedom to optimize its arrangement without being constrained by traditional main frame bearing locations. The flying bridge acts as an autonomous support platform that can be designed and positioned to meet specific functional requirements.
Solution Approach 2:
The flying bridge serves as an intermediary structure between the main frame and the functional elements it supports. Rather than directly mounting the escapement and other mechanisms on the main frame, the flying bridge mediates this connection, providing a flexible intermediate platform. This intermediary structure enables designers to position mechanisms in optimal locations without being constrained by the main frame's bearing positions, thereby enhancing design freedom and space utilization while maintaining structural support.
Data Source
AI summary
Timepiece movement (1) comprising:—a main frame (3) acting as a support for a drive source (5) and for at least one base gear train (7) designed to be driven by the drive source (5);—at least one flying bridge (11) cantilever-mounted on an element of the main frame (3) and extending in superposition on the latter, characterized in that the flying bridge (11) supports at least one functional element (13; 9) kinematically linked to the base gear train (7) via a flying gear train (17, 17a, 17b, 17c, 17d), and in that the functional element (13; 9) and at least some elements of the flying gear train (17a, 17b, 17c, 17d) are entirely supported on the flying bridge (11).