Magnetic Drive Timepiece Display Device

Solution Overview

Problem

The complexity of the transmission gear set in existing timepiece display devices leads to complicated assembly and increased part count, making them less efficient and competitive.

Innovation Solution

A timepiece display device utilizing a rotating optical disc and magnetic element to drive an indicator element magnetically positioned on a dial, replacing the traditional gear set for time indication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a transmission gear set composed of multiple gears is used to drive the second hand, minute hand, and hour hand, then the time indication function is achieved, but the device complexity and assembly complexity increase

Engineering Contradiction:

Improvetime indication functionVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical gear transmission system with a magnetic field-based drive system. A magnetic drive assembly includes a magnetic element and an indicator element that interact through magnetic attraction, eliminating the need for complex gear sets while achieving the same time indication function. This substitution reduces mechanical complexity and improves reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the drive source and the indicator elements. The magnetic field mediates the transmission of motion from the magnetic element to the indicator element, replacing direct mechanical gear connections. This intermediary approach simplifies the overall structure while maintaining functional reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a transmission gear set composed of multiple gears is used to drive the hands, then the time indication function is achieved, but the assembly complexity increases

Engineering Contradiction:

Improvetime indication functionVSAvoidassembly complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the traditional mechanical gear transmission system with a magnetic field-based drive system. A magnetic drive assembly includes a magnetic element and an indicator element that interact through magnetic attraction, eliminating the need for complex gear sets while achieving the same time indication function. This substitution reduces mechanical complexity and improves reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the complex gear transmission components from the timepiece mechanism. By eliminating the gear set entirely and using only the magnetic drive assembly, the number of parts requiring assembly is significantly reduced, making manufacturing and assembly easier.

Inventive Principle:

Principle #2Taking out (Extraction)

3Reliability

If a transmission gear set composed of multiple gears is used, then the time indication function is achieved, but the number of parts increases

Engineering Contradiction:

Improvetime indication functionVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent replaces the traditional mechanical gear transmission system with a magnetic field-based drive system. A magnetic drive assembly includes a magnetic element and an indicator element that interact through magnetic attraction, eliminating the need for complex gear sets while achieving the same time indication function. This substitution reduces mechanical complexity and improves reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent merges multiple functions into the magnetic drive assembly. The magnetic element serves both as the drive source and the positioning mechanism, while the indicator element combines the functions of the gear-driven hands. This consolidation reduces the total number of parts while maintaining the time indication function.

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

This solution simplifies the structure, reduces the number of parts, and enhances assembly efficiency, making the timepiece display device more competitive in the market.

Implementation Method 1

The indicator element and the magnetic element are positioned by the magnetic attraction of the magnetic element

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentUS11614712B2Timepiece display device

Publication Date: 2023.03.28 MORALES RAMIREZ CESAR GUADALUPE

AI summary

A timepiece display device comprises a timepiece body, a support plate, a timepiece driving module, a rotating optical disc, a magnetic element, a top plate, and a rotating shaft of the timepiece driving module passes through the support plate and connects to the center of the rotating optical disc to drive the rotating optical disc to rotate; a display comprises an annular base mounted in the upper chamber of the timepiece body, a dial mounted inside the annular base, an indicator element placed on the dial and corresponding to the time identifier on the dial, and a crystal covering the upper end of the annular base. The indicator element and the magnetic element are positioned by the magnetic attraction of the magnetic element, and the indicator element moves synchronously with the magnetic element to indicate the time.