Steam Iron Locking Mechanism for Safe Self-Engaging Docking

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Solution Overview

Problem

Existing ironing systems face challenges in safely and securely locking the iron onto the base during transportation and storage, risking damage and injury due to improper alignment and potential burns from hot surfaces.

Innovation Solution

A locking device with first and second locking elements that engage opposite ends of the iron, where the second locking element is biased by an elastic element to ensure secure engagement without manual alignment, and a hand lever for safe operation, preventing contact with hot parts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking device with engaging elements is used to secure the iron on the base, then the iron is held securely during transportation, but the user risks burning themselves on hot surfaces when operating the locking mechanism

Engineering Contradiction:
Improvelocking reliabilityVSAvoidburn risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A handle is introduced as an intermediary component between the user's hand and the locking mechanism. The handle allows the user to operate the locking element without direct contact with hot parts of the iron, thus mediating the interaction and eliminating the burn risk while maintaining secure locking functionality

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a spring-biased locking mechanism is used to automatically engage the iron, then the locking process is simplified, but the iron may pop out of the locking device if not properly aligned during insertion

Engineering Contradiction:
Improvelocking easeVSAvoidlocking reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The locking element is pre-biased by a spring to be in an engaged position, ready to automatically capture the iron when inserted. This preliminary preparation of the locking mechanism eliminates the need for manual alignment adjustments and prevents false locking, as the spring force ensures immediate and reliable engagement upon insertion

Inventive Principle:
Principle #10Preliminary action

3Productivity

If the locking element is positioned to engage the iron automatically, then the locking process is faster, but the user has less control over the alignment and engagement process

Engineering Contradiction:
Improvelocking speedVSAvoidalignment control
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The locking mechanism is designed to be self-aligning and self-engaging through the spring bias. The geometry of the locking element and the iron's engagement surface are configured so that the spring force automatically guides the iron into correct alignment and secures it without requiring user intervention for alignment control, thus achieving both speed and ease of operation

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 solution provides a safer and easier locking mechanism that prevents slipping or false locking, ensuring the iron is securely held without risking burns or damage, and allows for easy transportation and storage.

Implementation Method 1

the second locking element in the unlocked position (in the unlocked state) is disengaged from the second end of the iron and when the iron is pressed down onto the locking device is released and moved into a locking position (locked state) in which the second locking element engages the second end of the iron

Methodology Applied
Scientific EffectElastic element biasing: Elasticity

Data Source

PatentEP3155162B1Device for locking a steam iron
Publication Date: 2018.10.03 DE LONGHI BRAUN HOUSEHOLD GMBH
  • EP3155162B1 patent drawingFigure 1a~1b
  • EP3155162B1 patent drawingFigure 2a~2c
  • EP3155162B1 patent drawingFigure 3a~3c

AI summary

An ironing system (1) according to the invention comprises an iron (10) and a base (20) with a locking device for the iron, wherein the locking device has a first locking element (31) and a second locking element (32), located opposite the first as seen in relation to the iron, said locking elements being suitable for engaging respectively with a first end (11a) and an opposite, second end (11b) of the iron (10). The second locking element (32), in the unlocked position, is disengaged from the second end (11a) of the iron and, when the iron (10) is pushed down onto the locking device, is triggered and displaced into a locking position, in which the second locking element (32) is in engagement with the second end (11a) of the iron.