Monobloc Diaphragm Deployment Device for Watchmaking

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Solution Overview

Problem

Diaphragm deployment devices in watchmaking are complex and costly to manufacture due to their intricate reinforcements and assembly requirements, making them challenging to produce efficiently, especially for small devices.

Innovation Solution

A diaphragm deployment device comprising a first rigid frame and a second deformable frame, where the two frames form a monobloc set from the same material, eliminating the need for assembly and joints, thereby simplifying and reducing the manufacturing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the deployment device uses multiple separate frame elements joined by articulations, then the device can achieve the required deployment functionality, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improvedeployment functionalityVSAvoidframe structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the first rigid frame and second deformable frame into a single monobloc piece, eliminating the need for separate articulations and joints. This single-piece construction maintains the deployment functionality while significantly reducing structural complexity and the number of components that need to be assembled.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The monobloc structure serves multiple functions simultaneously: it provides the rigid support of the first frame, the deformability of the second frame, and the articulation mechanism all in one integrated component, eliminating the need for separate elements for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the deployment device uses multiple separate frame elements requiring assembly, then the device can achieve the required functionality, but the manufacturing time and cost increase

Engineering Contradiction:
Improvedeployment functionalityVSAvoidmanufacturing efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

By combining both frames into a single monobloc piece, the patent eliminates the assembly step entirely. The device can be manufactured as one continuous piece through processes like molding or machining, significantly reducing manufacturing time and labor costs while maintaining full deployment functionality.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If the deployment device uses articulations and joints between frame elements, then the device can achieve movement functionality, but wear and tear occur leading to play and potential seizure

Engineering Contradiction:
Improvemovement functionalityVSAvoidwear resistance
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The monobloc construction eliminates all articulations and joints by integrating the movement mechanism directly into the single piece. The deformable frame portions move relative to each other through the monobloc structure itself, eliminating contact surfaces that would otherwise experience wear, friction, and potential seizure.

Inventive Principle:
Principle #5Merging (Combining)

4Device complexity

If the deployment device uses separate frame elements requiring joints, then the device can achieve the required structure, but lubrication requirements increase maintenance complexity

Engineering Contradiction:
Improveframe structureVSAvoidmanufacturing simplicity
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The integrated monobloc structure eliminates all joints and articulations that would require lubrication. The movement between frame portions occurs through the monobloc material itself without contact surfaces, completely eliminating lubrication requirements and associated maintenance complexity.

Inventive Principle:
Principle #5Merging (Combining)

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

The solution allows for faster and cheaper production of diaphragm deployment devices, reduces the risk of wear and lubrication issues, and provides better control and precision in the deployment mechanism.

Implementation Method 1

a second deformable frame (3), the first rigid frame (2) and the second deformable frame (3) being connected to each other, so that the second deformable frame (3) passes from a first extended configuration to a second compact configuration, and vice versa

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentEP4137892B1Deployment device such as a diaphragm, in particular for timepieces
Publication Date: 2025.04.02 MONTRES BREGUET SA
  • EP4137892B1 patent drawingFigure 1~2
  • EP4137892B1 patent drawingFigure 3~4
  • EP4137892B1 patent drawingFigure 5~7

AI summary

The invention relates to a diaphragm-type deployment device (1), particularly for watchmaking, the device comprising a first rigid armature (2) and a second deformable armature (3), the first rigid armature (2) and the second deformable armature (3) being connected to each other, such that the second deformable armature (3) moves from a first extended configuration to a second compact configuration, and conversely, the device (1) defining a first geometry when the second deformable armature (3) is in the first extended configuration, and defining a second geometry smaller than the first geometry when the second deformable armature (3) is in the second compact configuration, the device (1) extending substantially in the same plane when the second armature is in the first or second configuration,characterized in that at least a first part of the first rigid frame (2) and at least a first part of the second deformable frame (3) form a first monobloc assembly, preferably made of the same material. The invention also relates to a timepiece comprising such a display device (1).