Recessed Output Arbor Timepiece Movement Design

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Solution Overview

Problem

Conventional timepiece movements require additional components and protruding arbors for different display options, leading to increased thickness and cost, as well as a cluttered dial with multiple orifices, detracting from the aesthetic appeal.

Innovation Solution

A timepiece movement with output arbors that are either recessed or flush with the local reference surface, featuring stop surfaces to limit travel and prevent interference, allowing for versatile display configurations without additional plates, enabling a modular assembly with visible display indicators through orifices in the dial.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If additional plates and protruding arbors are used for different display options, then display versatility is improved, but device complexity and thickness increase

Engineering Contradiction:

Improvedisplay optionsVSAvoidadditional plates and components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The movement is designed with multiple output arbors that can serve different display functions (centre seconds, off-centre small seconds, timing functions) without requiring additional plates or components. The same movement structure supports various configurations, making it universally applicable to multiple display options.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Instead of having arbors protrude above the dial surface as in conventional designs, the output arbors are positioned to be recessed or flush with the local reference surface. This inverted approach eliminates the need for additional plates while maintaining display versatility.

Inventive Principle:

Principle #13The other way round (Inversion)

2Adaptability or versatility

If multiple orifices are created in the dial for different arbors, then display versatility is improved, but aesthetic appearance deteriorates

Engineering Contradiction:

Improvedisplay positioning optionsVSAvoiddial cleanliness

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The conventional approach of having protruding arbors requiring multiple dial orifices is inverted. The output arbors are positioned below or at the level of the dial surface, allowing the dial to remain clean and uncluttered while still supporting multiple display configurations through strategic placement of the recessed arbors.

Inventive Principle:

Principle #13The other way round (Inversion)

3Adaptability or versatility

If unused arbors are left in the movement, then display versatility is improved, but interference with dial and hands occurs

Engineering Contradiction:

Improvemultiple display functionsVSAvoidinterference with dial and hands

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The output arbors are nested within the movement structure, positioned to be recessed or flush with the local reference surface. This nesting approach allows multiple arbors to coexist without interfering with the dial or hands, as each arbor is contained within the movement's internal geometry rather than protruding into the display space.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

Instead of arbors protruding outward and potentially interfering with dial components, the arbors are positioned inward or at the surface level. This inverted positioning eliminates interference issues while preserving the ability to use multiple arbors for different display functions.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS9329573B2Below dial hand fitting

Publication Date: 2016.05.03 ETA SA MFG HORLOGERE SUISSE

AI summary

A timepiece movement driving at least one output arbor for receiving an indicator displaying a physical or temporal magnitude facing and above a complementary indicator or a dial, the complementary indicator or dial being arranged on a local reference or bearing surface included locally in the movement about of each the output arbor of the movement, or being arranged on the local reference or bearing surface. The output arbor includes, on a side of a local reference or bearing surface thereof, a free end which is either recessed or flush with respect to the local reference or bearing surface thereof.