Dispenser Evaluation Unit Magnetic Mounting for Easy Attachment

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Solution Overview

Problem

Existing evaluation units for dispensers are difficult to handle during assembly and disassembly, requiring complex coupling mechanisms and often involving magnetic attachments that are not user-friendly.

Innovation Solution

A dispenser with a magnetic or magnetizable mounting surface on the housing and a corresponding magnetic or magnetizable evaluation unit, allowing for easy attachment and detachment using neodymium magnets or elastically deflectable retaining arms, along with a modular design for interchangeable mounting units.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a detachable evaluation unit is used, then ease of operation is improved, but device complexity worsens due to requiring a coupling mechanism

Engineering Contradiction:
Improveease of attachment and detachmentVSAvoidcoupling mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical coupling mechanisms with a magnetic field-based attachment system. The evaluation unit and dispenser housing both incorporate magnetic elements that provide automatic alignment and secure attachment without requiring complex mechanical interlocking components, thereby simplifying the overall device structure while maintaining ease of operation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes magnetic field strength as a controllable parameter to achieve secure yet easily reversible attachment. By adjusting the magnetic element properties (strength, positioning), the system achieves optimal balance between secure attachment during use and easy detachment when needed, eliminating the need for complex mechanical coupling mechanisms.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If a magnetic coupling mechanism is used, then ease of operation is improved, but reliability worsens due to potential detachment issues

Engineering Contradiction:
Improveconvenience of attachmentVSAvoidsecure attachment during use
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent combines multiple magnetic elements in a complementary arrangement between the evaluation unit and dispenser housing. This merging of magnetic fields creates a distributed attachment system that provides both ease of operation (simple approach-and-attach) and high reliability (multiple contact points and uniform force distribution prevent accidental detachment).

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The magnetic coupling system creates a uniform force field distribution across the attachment interface, ensuring even pressure and stable attachment throughout the contact area. This equipotential magnetic field arrangement prevents localized stress points that could lead to detachment, while maintaining simple user interaction.

Inventive Principle:
Principle #12Equipotentiality

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

Facilitates convenient and secure attachment of the evaluation unit to the dispenser, ensuring precise positioning for reliable data capture and compatibility with various dispenser designs, enhancing user experience and data accuracy.

Implementation Method 1

a magnetic or magnetizable mounting surface is provided on the outside of the dispenser housing... a contact surface of the evaluation unit is designed to be magnetic or magnetizable, so that the evaluation unit can be magnetically attached to the housing

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Implementation Method 2

elastically deflectable retaining arms that can grip the housing and thus provide a clamping hold of the evaluation unit to the housing

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4514433B1Dispenser
Publication Date: 2026.02.25 APTAR RADOLFZELL
  • EP4514433B1 patent drawingFigure 1~2
  • EP4514433B1 patent drawingFigure 3~5
  • EP4514433B1 patent drawingFigure 6~8

AI summary

A dispenser (10) for discharging pharmaceutical or cosmetic media and having a housing (12), a media reservoir (14) and a discharge opening (16) is known. It is also known to provide such a dispenser with an electronic evaluation unit (40) for detecting the use of the dispenser, this evaluation unit (40) being designed to be releasably mounted on the housing (12) of the dispenser (10). It is proposed that a magnetic or magnetizable retaining surface (70) is provided on the outer side of the housing (12), in particular on a reservoir body (18) of the housing (12). A bearing side (42) of the evaluation unit (40) is correspondingly designed to be magnetic or magnetizable such that the evaluation unit (40) can be magnetically fastened on the housing (12). Alternatively, provision is made for the evaluation unit (40) to have at least two, and preferably at least three, elastically deflectable retaining arms (80, 82) that engage around the housing (12), in particular a reservoir body (18) of the housing, and thus hold the evaluation unit (40) clamped against the housing.