Magnetic Joining Mechanism for Oral Cavity Washing Device Alignment

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Solution Overview

Problem

Conventional oral cavity washing devices face challenges in accurately aligning the washing unit with the body unit, leading to potential misalignment and instability during mounting.

Innovation Solution

The oral cavity washing device employs a magnetic joining mechanism between the body unit and the washing unit, utilizing magnets and ferromagnetic materials to ensure proper alignment and secure attachment, even if the units are not perfectly aligned, with a recessed portion on the body unit to stabilize the washing unit's posture and a restricting portion to maintain its position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a conventional mounting structure is used to detachably mount the washing unit on the body unit, then the washing unit can be easily removed and mounted, but the washing unit may be misaligned or displaced from the appropriate position during mounting

Engineering Contradiction:

Improveease of mountingVSAvoidmounting position accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent replaces the conventional mechanical mounting structure with a magnetic field-based joining mechanism. The magnetic joining portion generates magnetic force to attract and hold the washing unit at the appropriate position on the body unit, eliminating the need for complex mechanical alignment features while ensuring precise and stable mounting.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent utilizes magnetic force as a physical parameter to achieve both easy operation and precise positioning. By adjusting the magnetic field strength and distribution in the magnetic joining portion, the system can provide sufficient holding force for stable mounting while maintaining ease of attachment and detachment operations.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If the washing unit is mounted without a magnetic joining mechanism, then the structure is simpler, but the washing unit cannot be securely held at the appropriate position and may become displaced

Engineering Contradiction:

Improvestructure complexityVSAvoidmounting stability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent replaces complex mechanical fastening mechanisms with a magnetic field-based joining system. The magnetic joining portion provides secure holding of the washing unit through magnetic attraction, ensuring reliability and stability without requiring complex mechanical structures such as screws, clips, or interlocking features.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If a magnetic joining portion is added to join the body unit and washing unit, then the washing unit can be accurately aligned and securely held, but the device complexity increases

Engineering Contradiction:

Improvemounting position accuracyVSAvoidstructure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent employs a magnetic field-based joining mechanism that can be integrated into the existing device structure. The magnetic joining portion, including magnets and ferromagnetic materials, can be incorporated into the body unit or washing unit housing, providing precise positioning and secure holding without adding significant structural complexity or requiring additional mechanical components.

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 allows for easy and accurate mounting of the washing unit on the body unit, ensuring stable operation and reducing wear and tear on the device components, while maintaining a compact design.

Implementation Method 1

a magnetic joining portion that generates a magnetic force to join the washing unit and the body unit to each other

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Implementation Method 2

a joining portion which joins the body unit and the washing unit to each other by a magnetic force

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS11389278B2Oral cavity washing device

Publication Date: 2022.07.19 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

An oral cavity washing device includes a body unit including a pump for discharging a washing liquid, a tube connected to the body unit for making the washing liquid discharged from the pump flow through the tube, and a washing unit connected to the tube for discharging the washing liquid. The oral cavity washing device further includes a joining portion which joins the body unit and the washing unit to each other by a magnetic force.