Watch Testing Fixture with Spherical Multi-Orientation Positioning

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Solution Overview

Problem

Existing watch testing devices lack flexibility in relative positioning between the watch organ and the testing machine, limiting the ability to simulate a wide range of orientations and stresses, and are cumbersome to handle and install.

Innovation Solution

A testing device with a holding device and fixing device that feature counterforms allowing adjustment in at least seven distinct relative orientations, including continuous and discrete variations, and orientation drive means for precise repositioning, enabling testing in an infinite number of orientations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional fixing device with limited predetermined positions is used, then the device structure is simple, but the flexibility in relative positioning between the watch organ and testing machine is poor

Engineering Contradiction:
Improveflexibility in relative positioningVSAvoiddevice structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The holding device incorporates a spherical interface that engages with a corresponding spherical counterform on the fixing device. This spherical geometry enables continuous rotation and positioning in multiple orientations while maintaining a compact, integrated structure. The curved surfaces provide inherent guidance and constraint, allowing the watch organ to be tested in various positions without requiring complex mechanical adjustment mechanisms.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Adaptability or versatility

If a fixing device with multiple predetermined positions is implemented, then the positioning flexibility improves, but the ease of handling and installation deteriorates

Engineering Contradiction:
Improvepositioning flexibilityVSAvoidease of handling and installation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The fixing device employs a dynamic locking mechanism that allows the holding device to be easily inserted and removed. The spherical interface enables smooth rotational movement during installation, and a simple actuation system locks the position once desired orientation is achieved. This dynamic design eliminates the need for complex multi-step positioning procedures while maintaining the ability to achieve multiple distinct orientations.

Inventive Principle:
Principle #15Dynamics

3Reliability

If only six predetermined orientations are provided, then the device complexity remains low, but the representativeness of stress simulation is insufficient

Engineering Contradiction:
Improverepresentativeness of stress simulationVSAvoidorientation adjustment complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spherical interface between the holding device and fixing device enables continuous rotation around multiple axes, allowing the watch organ to be positioned in any orientation rather than limited to six discrete positions. This geometric solution provides infinite positioning possibilities while maintaining mechanical simplicity through the inherent symmetry and guidance of spherical surfaces.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Data Source

PatentEP4610746A1Device for testing a timepiece member
Publication Date: 2025.09.03 ROLEX SA
  • EP4610746A1 patent drawingFigure 1~3b
  • EP4610746A1 patent drawingFigure 4~5
  • EP4610746A1 patent drawingFigure 6~7

AI summary

Testing device (20) of a timepiece (100), comprising at least: - a holding device (30), arranged to receive and hold in place the timepiece (100), - a fixing device (40), arranged to fix the holding device (30) on a testing machine (10), characterized in that one of the holding device (30) and the fixing device (40) comprises a counterform at least partially matching the other of the holding device (30) and the fixing device (40), and in that the counterform is arranged to allow adjustment of the fixing of the holding device (30) according to at least seven distinct relative orientations between the holding device (30) and the fixing device (40).