Nozzle Valve Lever Release for High Detaching Force

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Solution Overview

Problem

Existing valve arrangements for applying flowable media, particularly hot glue, face challenges with low detaching forces due to limited lever length and the proximity of the fastening screw to the lever, which can cause burns during operation.

Innovation Solution

A valve arrangement with a pivotable lever that moves linearly in a first phase to exert a detaching force and then pivots in a second phase, allowing for larger detaching forces and safer operation, with the lever's movable operating part positioned away from the detaching force application point.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If the lever is pivoted to exert detaching force on the nozzle part, then the nozzle part can be detached from the main valve body, but the detaching forces are limited due to low effective lever length and the fastening screw is positioned close to the lever causing burn risks

Engineering Contradiction:

Improvedetaching forceVSAvoidburn risk to user

Core Design Contradiction:

ForceVSObject-affected harmful factors

Solution Approach 1:

The lever's movement is divided into two phases: first linear movement perpendicular to the nozzle opening plane to exert detaching force, then pivoting movement to the releasing position. This dimensional change allows the lever to apply force at a distance from the hot screw, eliminating burn risks while maintaining detachment capability

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The guide structure acts as an intermediary element that enables the lever to move linearly first before pivoting. This intermediate linear phase allows the lever to exert detaching force away from the hot screw area, while the guide ensures proper movement trajectory

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If the fastening screw is arranged close to the lever for compact design, then the device structure is simplified, but the user is at risk of burns during operation when hot glue is used

Engineering Contradiction:

Improvefastening device structureVSAvoidburn risk to user

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The lever's linear movement phase moves the force application point away from the hot screw in the perpendicular direction, creating spatial separation between the user's hand and the hot component during the critical detachment operation

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Force

If the lever moves linearly to exert detaching force, then larger detaching forces can be applied, but the lever requires a guide structure to constrain the movement

Engineering Contradiction:

Improvedetaching forceVSAvoidguide structure

Core Design Contradiction:

ForceVSDevice complexity

Solution Approach 1:

The lever's movement is segmented into two distinct phases: linear movement perpendicular to the nozzle opening plane for force application, then pivoting movement for position change. This segmentation allows simple guide surfaces to constrain only the linear phase, minimizing structural complexity while enabling high detaching forces

Inventive Principle:

Principle #1Segmentation

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

Enables the application of significantly larger detaching forces while reducing the risk of burns, allowing for easy and safe removal of nozzle parts without compromising the pressing force during temperature changes.

Implementation Method 1

in a first phase of its movement out of the fastening position and into the releasing position, the lever is movable in a straight line and in the process exerts the detaching force on the nozzle part

Methodology Applied

Scientific EffectLinear movement:

Implementation Method 2

in a second phase of its movement, the lever is movable in particular to the side into the releasing position by a pivoting movement

Methodology Applied

Scientific EffectPivoting movement:

Implementation Method 3

the pivotable lever is movable out of the fastening position and into a releasing position, in which it does not exert a pressing force

Methodology Applied

Scientific EffectPressing force: Mechanical Force

Implementation Method 4

the movement of which then brings about pivoting of the lever, exerting the detaching force on the nozzle part

Methodology Applied

Scientific EffectTorque: Torque

Data Source

PatentUS12496608B2Valve arrangement

Publication Date: 2025.12.16 FOCKE & CO (GMBH & CO KG)

AI summary

A valve arrangement for applying flowable medium to a substrate, having a main valve body with a medium channel for flowable media which is able to be closed by a movable closure member and to which a nozzle part having a nozzle opening of the valve arrangement is connected, wherein the valve arrangement has a pivotable lever movable out of a fastening position and into a releasing position, wherein the pivotable lever, during the movement from the fastening position into the releasing position, exerts a detaching force on the nozzle part in order to support the detachment of the nozzle part from the main valve body. In a first phase of its movement out of the fastening position and into the releasing position, the lever is movable in a straight line and exerts the detaching force on a push-off surface of the nozzle part, and entrains the nozzle part.