Induction Tool Connector With Snap-Fit Biasing

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Solution Overview

Problem

Existing induction heating tools face difficulties in replacing front modules, which can lead to cumbersome and error-prone processes, potentially resulting in overheating due to improper mounting, posing safety risks.

Innovation Solution

The design incorporates a connector with elongated insertion channels and biased pressing parts to securely engage plug portions, limiting excessive electrical currents and incorporating a controlling module to monitor electrical resistance and temperature, ensuring safe and efficient module replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If set screws are used to secure plug portions to the housing, then the front module can be firmly mounted, but the replacement process becomes cumbersome and error-prone

Engineering Contradiction:

Improvemounting firmnessVSAvoidmodule replacement ease

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The connector is divided into a housing and a removable plug portion that can be separated without tools. The plug portion is segmented from the front module, allowing easy attachment and detachment while maintaining secure electrical connections during use.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connector transitions from a static screwed connection to a dynamic snap-fit connection that can be quickly engaged and disengaged. The plug portion features flexible elements that allow it to be inserted and locked into place without requiring rotational motion or tools.

Inventive Principle:

Principle #15Dynamics

2Strength

If set screws are used to secure plug portions, then firm mounting is achieved, but improper mounting goes undetected leading to overheating risks

Engineering Contradiction:

Improvemounting firmnessVSAvoidmounting correctness

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The connector incorporates visual feedback mechanisms such as color-coded indicators or transparent sections that show whether the plug portion is correctly seated. Electrical feedback is provided through the control system that monitors connection resistance and alerts the user if the connection is improper, preventing overheating.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The connector design includes built-in guidance features and tolerance compensation that prevent improper mounting before it can cause damage. The plug portion has alignment guides and flexible contact elements that ensure correct positioning, cushioning against user error before overheating can occur.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Stability of the object's composition

If multiple set screws are used for secure connection, then mounting stability is improved, but the complexity of the connector increases

Engineering Contradiction:

Improveconnector stabilityVSAvoidconnector complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The set screws are extracted from the connector design entirely, replaced by an integrated snap-fit mechanism. The securing function is taken out from being a separate fastening operation to being an inherent part of the plug insertion process, simplifying the overall connector structure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The electrical contact function and mechanical securing function are merged into a single integrated plug portion design. The same elements that provide electrical connectivity also provide mechanical retention, eliminating the need for separate set screws and reducing connector complexity.

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 and safeguards the replacement of front modules by reducing the risk of overheating and damage, providing a more reliable and user-friendly operation of induction heating tools.

Implementation Method 1

induction heating tools are used for heating up an object or one or more components thereof at least partly by means of such high-frequency electric field

Methodology Applied

Scientific EffectInduction heating: Induction Heating

Implementation Method 2

The connector is arranged for limiting excessive local electrical currents flowing in the elongated contacting surfaces of the connector... by pressing the plug portion against the contacting surface by means of a pressing part provided along the insertion channel

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP2809127B1Induction heating handheld power tool and method for assembling a front module to an induction heating handheld power tool

Publication Date: 2019.01.23 IDTOOLS BV

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AI summary

The invention relates to an induction heating tool. Said tool comprises a housing provided with a connector for connection with a front module, such as a coil. The connector comprises a first elongated insertion channel for receiving a first plug portion of a front module for an induction heating tool. The connector also comprises a second elongated insertion channel for receiving a second plug portion of said front module. The induction heating tool is arranged for limiting excessive local electrical currents flowing in the elongated contacting surfaces of the connector.