Push-in Watch Crown Mechanism for Wrist Comfort

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Solution Overview

Problem

Standard watch crowns protrude from the watch body, causing discomfort and irritation as they dig into the wrist or hand, due to their external location and design.

Innovation Solution

A push-in watch crown mechanism that allows the crown to be pushed inside the watch body, hidden from view and smooth to the touch, and can be released externally for use, utilizing a spring-loaded assembly with a latching mechanism and integrated toggling release mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the watch crown protrudes from the watch body to enable easy access and operation, then the ease of operation is improved, but the comfort and wearability deteriorate due to the crown digging into the wrist or hand

Engineering Contradiction:
Improveease of operationVSAvoidcomfort
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The watch crown is designed to be movable between two states: protruding outward for operation and pushed inward for comfort. The dynamic mechanism allows the crown to transition between these positions, providing ease of operation when needed while eliminating discomfort during normal wear through the push-in capability

Inventive Principle:
Principle #15Dynamics

2Object-affected harmful factors

If the watch crown is pushed inside the watch body to improve comfort and eliminate digging into the hand, then the comfort is improved, but the accessibility and ease of operation worsen

Engineering Contradiction:
ImprovecomfortVSAvoidaccessibility
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The crown mechanism incorporates a self-latching feature where pushing the crown inward automatically engages a locking mechanism that secures it in the retracted position. This self-service characteristic eliminates the need for additional components or complex operations to maintain the comfortable retracted state, while a simple push action suffices to both retract and secure the crown

Inventive Principle:
Principle #25Self-service

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 mechanism ensures the watch crown is comfortable to wear by eliminating digging into the hand or wrist, while remaining accessible for functions like time setting.

Implementation Method 1

the spring is fitted between the collar and the watch crown

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10534318B2Push in watch crown mechanism
Publication Date: 2020.01.14 MASONE KEVIN JOSEPH
  • US10534318B2 patent drawing
  • US10534318B2 patent drawing
  • US10534318B2 patent drawing

AI summary

Push-in watch crown mechanisms and methods are described. The push-in watch crown mechanisms include a locking mechanism for latching the watch crown inside the watch body such that the top of the watch crown is substantially flush to the edge of the watch body. Further, the push-in watch crown mechanisms include a release mechanism for unlatching the watch crown so that it is released outside of the watch body and accessible for use. Additionally, methods of using push-in watch crown mechanisms are described.