Brushless Telescopic Motor Driven Foam Pump for Toothpaste Dispensing

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Solution Overview

Problem

Existing electric toothbrushes that automatically squeeze mousse toothpaste face issues such as short service life, high noise, large size, and insufficiently fine foams due to the use of brush motors for driving pumps.

Innovation Solution

The apparatus employs a brushless telescopic motor to drive a foam pump with a piston, where toothpaste and liquid are mixed and dispensed through a connecting shaft to the toothbrush head, utilizing an air inlet and liquid inlet for efficient foam generation, replacing the traditional brush motor setup.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a brush motor is used to drive the pump for squeezing mousse toothpaste, then the device can achieve automatic toothpaste dispensing, but it results in short service life, high noise, and large size

Engineering Contradiction:

Improveautomatic toothpaste dispensingVSAvoidservice life

Core Design Contradiction:

Extent of automationVSDuration of action of moving object

Solution Approach 1:

The patent replaces the traditional brush motor with a telescopic motor that uses electromagnetic induction without brushes. The telescopic motor converts rotational motion into linear reciprocating motion through a converting mechanism, directly driving the piston without requiring a pump. This substitution eliminates brush wear, significantly extending service life while maintaining automatic dispensing functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Extent of automation

If a brush motor is used to drive the pump for squeezing mousse toothpaste, then the device can achieve automatic toothpaste dispensing, but it results in high noise and large size

Engineering Contradiction:

Improveautomatic toothpaste dispensingVSAvoidnoise

Core Design Contradiction:

Extent of automationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the noisy brush motor with a telescopic motor that operates more quietly through electromagnetic linear actuation. The direct linear motion generation without rotating brushes and complex transmission mechanisms significantly reduces mechanical noise while enabling automatic toothpaste dispensing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Extent of automation

If a brush motor is used to drive the pump for squeezing mousse toothpaste, then the device can achieve automatic toothpaste dispensing, but it results in large size

Engineering Contradiction:

Improveautomatic toothpaste dispensingVSAvoiddevice size

Core Design Contradiction:

Extent of automationVSVolume of moving object

Solution Approach 1:

The patent replaces the bulky brush motor and pump assembly with a compact telescopic motor that generates linear motion directly. The integrating mechanism converts rotational motion to linear reciprocating motion within a compact structure, eliminating the need for separate pump components and significantly reducing overall device volume while maintaining automatic dispensing capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Productivity

If a traditional pump system is used with brush motor, then the device can dispense toothpaste, but it produces insufficiently fine foams

Engineering Contradiction:

Improvetoothpaste dispensingVSAvoidfoam fineness

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent replaces the pump system with a telescopic motor directly driving a piston. This direct drive mechanism provides more precise and uniform reciprocating motion, creating finer and more uniform foam through improved mixing and aeration control as toothpaste and water are drawn through the mixing chamber.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 configuration results in low noise, compact size, and uniform, fine foams, enhancing the functionality of electric toothbrushes for oral hygiene.

Implementation Method 1

the telescopic motor is a brushless telescopic motor

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

the piston is driven by the telescopic motor to fully mix the toothpaste and the liquid in the foam pump

Methodology Applied

Scientific EffectFluid mixing: Stirring

Data Source

PatentUS20240057752A1Apparatus for automatically squeezing mousse toothpaste

Publication Date: 2024.02.22 KERUI TECH (DONGGUAN) CO LTD

AI summary

Toothpaste and liquid enter a foam pump from a liquid inlet of the foam pump, and then a piston is driven by a telescopic motor to fully mix the toothpaste and the liquid in the foam pump. A bottom of the foam pump is connected to a top of the telescopic motor, a bottom of a connecting shaft is connected to a top of the foam pump, and a driving motor is sleeved on the connecting shaft via a first through hole. The mixed liquid may be used after flowing to a toothbrush head from a second through hole of the connecting shaft.