Timepiece Pointer Color Coding for Visibility

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Solution Overview

Problem

Conventional timepieces face difficulties in enhancing the ease of viewing information due to similar lengths and designs of hour and minute hands, making it challenging for users to distinguish between them and grasp the current time effectively.

Innovation Solution

A timepiece design featuring two pointers with the same moment of inertia and distinct color schemes, allowing them to rotate around a shared axis, with one pointer displaying the hour and the other displaying the minute, along with a sub-pointer for additional information like battery level or operation modes, to improve visibility and user interaction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If hour and minute hands are made with similar lengths and designs to maintain manufacturing simplicity, then manufacturing cost is reduced, but ease of viewing and distinction between hands deteriorates

Engineering Contradiction:
Improvemanufacturing costVSAvoidease of viewing
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The patent applies local quality by giving the hour hand and minute hand different color schemes in specific regions. The hour hand has a first color scheme while the minute hand has a second color scheme, allowing users to easily distinguish between the two hands without changing their overall lengths or basic structure. This resolves the contradiction by maintaining manufacturing simplicity while improving visual distinction through localized color differentiation.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent directly applies color changes by assigning different color schemes to the hour hand and minute hand. The hour hand displays a first color scheme and the minute hand displays a second color scheme, enabling users to easily distinguish between the hands. This approach maintains similar lengths and basic designs for both hands (preserving manufacturing ease) while solving the distinction problem through color differentiation.

Inventive Principle:
Principle #32Color changes

2Loss of information

If multiple pointers are added to display additional information such as battery level and operation modes, then information display capability is improved, but device complexity increases

Engineering Contradiction:
Improveinformation display capabilityVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent applies universality by enabling the existing hour and minute hands to serve multiple functions. Besides displaying time, the hour hand also displays battery level information and operation mode information, while the minute hand displays additional information. This allows a single pointer structure to perform multiple display functions, improving information display capability without proportionally increasing device complexity.

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

Solution Approach 2:

The patent merges multiple information display functions into the existing pointer structure. The hour hand combines time display with battery level and operation mode display, while the minute hand combines time display with additional information display. This consolidation allows multiple types of information to be displayed using the same mechanical components, improving information capability while avoiding the need for separate dedicated pointers for each function.

Inventive Principle:
Principle #5Merging (Combining)

3Manufacturing precision

If pointers are made with the same moment of inertia to simplify manufacturing, then manufacturing precision is improved, but ease of operation deteriorates due to difficulty in distinguishing functions

Engineering Contradiction:
Improvemanufacturing precisionVSAvoidease of operation
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent applies color changes to resolve the distinction problem. The hour hand has a first color scheme and the minute hand has a second color scheme, allowing users to easily identify each hand's function despite them having the same moment of inertia and similar lengths. This maintains manufacturing precision while solving the operational distinction issue through color coding.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent applies local quality by differentiating the color schemes in specific regions of the hands. The hour hand displays a first color scheme while the minute hand displays a second color scheme, enabling functional distinction without changing the overall physical properties like length and moment of inertia. This resolves the contradiction by maintaining manufacturing precision while improving ease of operation through localized visual differentiation.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11181864B2Timepiece with increased information view ability
Publication Date: 2021.11.23 CITIZEN WATCH CO LTD
  • US11181864B2 patent drawing
  • US11181864B2 patent drawing
  • US11181864B2 patent drawing

AI summary

In a timepiece, moments of inertia of a first pointer and a second pointer that are for displaying first information and second information, respectively and that have a same rotation axis are the same. As a result, parts having identical specifications may be used in a drive mechanism of the first pointer and a drive mechanism of the second pointer. Further, color schemes of the first pointer and second pointer differ. As a result, a user may easily distinguish the first pointer and the second pointer.