Timepiece Time-Zone Display With Static Chassis Readability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing timepiece display devices lack alternatives that provide enhanced readability and original appearance, often making time reading difficult due to complex and unusual spatial distributions of moving display organs.

Innovation Solution

A display device with a chassis that remains static during normal operation and is moved at user request, featuring a selection mechanism to switch between time zones, and a kinematic linkage to maintain the display organ's orientation, allowing intuitive time reading.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the chassis is driven to rotate about the first main axis to display time in different time zones, then the timepiece can display multiple time zones, but the spatial distribution of display organs becomes complex and readability deteriorates

Engineering Contradiction:

Improvetime zone display capabilityVSAvoidtime reading readability

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Instead of rotating the chassis to display different time zones, the invention inverts the approach by keeping the chassis stationary and rotating only the hour display wheel about the second rotation axis. This inversion simplifies the spatial distribution of display organs while maintaining multi-time zone capability, as the static chassis provides a stable reference frame for reading time.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The invention segments the rotation functions into two independent parts: the chassis rotation about the first main axis (for time zone selection) and the hour display wheel rotation about the second rotation axis (for time display). This segmentation allows each component to perform its specific function without interfering with the spatial stability of display organs, thereby improving readability while maintaining versatility.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If multiple display organs are distributed in unusual spatial arrangements to show current time, then multiple time zones can be displayed, but the complexity of the display device increases

Engineering Contradiction:

Improvemulti-time zone displayVSAvoiddisplay device complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention inverts the conventional approach by making the hour display wheel rotatable about a second rotation axis while keeping the chassis stationary. This inversion reduces device complexity by eliminating the need for complex mechanisms to maintain the orientation of multiple display organs, as only the hour display wheel needs to rotate to indicate different time zones.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The hour display wheel serves multiple functions: it displays the current hour in the predefined time zone and simultaneously indicates time zone differences when rotated. This multi-functionality reduces the need for separate display organs for each time zone, thereby simplifying the overall device complexity while maintaining multi-time zone display capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If the chassis is moved frequently to switch between time zones, then time zone switching is enabled, but the stability of the display during normal operation deteriorates

Engineering Contradiction:

Improvetime zone switching capabilityVSAvoiddisplay stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The invention inverts the approach by keeping the chassis stationary during normal operation and enabling time zone switching through rotation of the hour display wheel about the second rotation axis. This inversion maintains the stability of the display composition during normal use, as the chassis and its mounted display organs remain fixed, while still enabling time zone switching through the rotatable hour display wheel.

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12504720B2Device enabling a timepiece movement to display the time in a predefined time zone

Publication Date: 2025.12.23 LA MONTRE HERMES

AI summary

Disclosed is a display device for a timepiece movement including: an hour display wheel for a predefined time zone; and a chassis pivotable to cooperate with indications that are static relative to the frame of the timepiece movement to display information, the respective angular positions of the chassis and of the hour display wheel being indexed relative to each other so the angular position of the chassis is associated with the display of information relating to the predefined time zone. The device further includes a selection mechanism arranged: to rotate the hour display wheel, responsive to a predefined action by a user, between first and second positions associated with respective first and second time zones; and to simultaneously rotate the chassis in steps so that the chassis moves from a first position, associated with the first time zone, to a second position, associated with the second time zone.