Flexible Membrane Magnetic Drive for Quiet Breast Pump

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Solution Overview

Problem

Existing breast pumps generate excessive noise due to vacuum pumping and mechanical drives, which can negatively impact the user's emotional experience.

Innovation Solution

A flexible membrane is designed to be magnetically driven, eliminating the need for vacuum pumps or mechanical drives by using embedded magnetic parts to deform the membrane and generate negative pressure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If vacuum pumping or mechanical drive is used to deform the flexible membrane, then the breast pump can generate negative pressure for milk expression, but strong noise is generated which adversely affects the user's emotion

Engineering Contradiction:

Improvenegative pressure generation capabilityVSAvoidnoise

Core Design Contradiction:

PowerVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the traditional mechanical drive system (vacuum pump or mechanical drive) with a magnetic drive system. The magnetic part generates magnetic force to directly deform the flexible membrane, eliminating the mechanical components that produce noise. This substitution of mechanical system with magnetic field-based system resolves the contradiction by maintaining the negative pressure generation capability while eliminating the harmful noise.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the driving parameter from mechanical force to magnetic force. By using magnetic parts that generate magnetic fields to deform the flexible membrane, the system achieves the same functional outcome (membrane deformation for negative pressure generation) through a different physical parameter, thereby eliminating noise while maintaining power.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If traditional vacuum pump or mechanical drive is used, then the breast pump achieves milk expression function, but the device complexity increases and noise is generated

Engineering Contradiction:

Improvemilk expression functionVSAvoiddevice structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent simplifies the device structure by replacing complex mechanical drive systems (vacuum pumps, mechanical drives) with a simpler magnetic drive system. The magnetic part directly deforms the flexible membrane without requiring complex mechanical transmission components, thereby reducing device complexity while maintaining the milk expression function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the noisy mechanical drive components from the system. By taking out the vacuum pump or mechanical drive and replacing them with a magnetic part, the system achieves the same function with fewer components, thereby reducing device complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

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 effectively reduces noise generation, enhancing user comfort and emotional well-being during breast milk expression.

Implementation Method 1

the first magnetic part is embeddedly provided within the deformation portion... the deformation portion can be magnetically driven to be deformed

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS20250114500A1Flexible membrane magnetically driven to generate negative pressure, and breast pump

Publication Date: 2025.04.10 SHENZHEN TPH TECH CO LTD

AI summary

A flexible membrane magnetically driven to generate negative pressure includes a mounting portion, a deformation portion and a magnetic part embedded within the deformation portion. The mounting portion is configured for mounting the flexible membrane. The deformation portion is integrally formed with the mounting portion. A connection between the deformation portion and the mounting portion is sealed. The mounting portion is provided at an edge of the deformation portion. The magnetic part is configured to magnetically drive the formation of the deformation portion.