Wall-Mounted Motor-Powered Back Scrubber for Limited Mobility Users

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Solution Overview

Problem

Individuals often struggle to adequately wash their backs due to limited flexibility, age, size, or dexterity, leading to potential skin conditions, acne, and unpleasant odors.

Innovation Solution

A back scrubbing device with a motor-powered brush that can be attached to a shower wall, allowing users to wash their backs without needing significant flexibility or dexterity, and featuring a soap dispenser for convenient cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If handheld cleaning tools are used, then portability is improved, but cleaning effectiveness deteriorates due to limited flexibility and dexterity requirements

Engineering Contradiction:

Improvereach capabilityVSAvoidflexibility and dexterity requirements

Core Design Contradiction:

Length of moving objectVSEase of operation

Solution Approach 1:

The device allows the user's back to serve as the mounting surface, eliminating the need for hands to hold or position the device. The magnetic mounting system enables the device to self-adhere to the user's back, freeing both hands and eliminating dexterity requirements while maintaining portability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention transitions from handheld operation to back-mounted operation, changing the spatial dimension of device placement. By mounting the device on the back surface rather than holding it, the system overcomes the limitations of arm reach and hand dexterity while maintaining mobility.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If fixed mounting systems are used, then stability is improved, but portability deteriorates

Engineering Contradiction:

Improvemounting stabilityVSAvoidportability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The magnetic mounting system allows dynamic adjustment of the mounting strength parameter. The magnetic force provides sufficient holding stability during use but can be easily overcome by deliberate movement, enabling both stable operation and portability without requiring fixed installation.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If motorized brushes are used, then cleaning effectiveness is improved, but device complexity increases

Engineering Contradiction:

Improvecleaning efficiencyVSAvoidmotor and power components

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces complex motorized brush mechanisms with simple manual scrubbing surfaces. The cleaning effectiveness is maintained through the mechanical action of the user's body movement against the scrubbing surface, eliminating motors, batteries, and electronic controls while improving reliability and reducing complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12279730B2Personal cleaning device

Publication Date: 2025.04.22 VAUGHN TIERRE

AI summary

The present invention relates generally to the field of personal cleaning devices having a housing with a front surface with at least one brush and a rear surface with at least one attachment feature for attachment to a surface such as a shower wall. The brush is powered by a motor which causes the brush to spin or move in different directions. The device may also have a soap dispenser that dispenses soap or other liquids which can be applied to the brush before use. The motor may further have a plurality of speeds and can be configured to run for a fixed period of time.