Fluid-Filled Bladder Cleaning Head for Dynamic Skin Exfoliation
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Solution Overview
Problem
Existing handheld personal care appliances lack effectiveness in cleaning, massaging, and gently removing materials from the skin, particularly in addressing rough skin conditions such as calluses or corns.
Innovation Solution
A cleaning head with a fluid-filled elastic bladder having non-uniform thickness and polygonal projections that dynamically engage and disengage, attached to a personal care appliance, providing oscillatory motion for enhanced skin treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional brush head with bristles is used, then the device can provide basic cleansing action, but it lacks effectiveness in cleaning, massaging, and gently removing materials from the skin, particularly for rough skin conditions
Solution Approach 1:
The patent employs a flexible bladder made of elastomeric material that can deform and conform to the skin surface. This flexible shell replaces the conventional rigid brush head structure, allowing the bladder to dynamically adapt to contours of the skin while providing effective contact for cleansing and exfoliation without the need for rigid bristles
Solution Approach 2:
The bladder is designed with dynamic characteristics, allowing it to deform, expand, and contract in response to applied pressure and motion. This dynamic behavior enables the bladder to provide both gentle cleansing on normal skin and effective exfoliation on rough skin areas, adapting its firmness and contact pressure automatically during use
2Reliability
If the bladder wall has uniform thickness, then manufacturing is simpler, but the cleaning and massaging effectiveness is reduced
Solution Approach 1:
The bladder wall is designed with non-uniform thickness, where different regions have different thickness values to provide varying levels of firmness and flexibility. Thinner regions provide softer contact for gentle areas, while thicker regions provide firmer contact for rougher skin areas, creating localized quality variations that enhance overall treatment effectiveness
3Reliability
If the projections are stationary, then the structure is simpler, but the engagement with skin and removal of dead skin cells is less effective
Solution Approach 1:
The projections are designed to move relative to each other and to the bladder surface during deformation. As the bladder expands and contracts, the projections dynamically engage with the skin, providing a rasping or exfoliating action that effectively removes dead skin cells. This dynamic movement transforms the projections from static features into active exfoliating elements
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
The solution enhances the cleaning and exfoliating capabilities of personal care appliances by allowing for improved engagement with the skin, effectively removing dead skin cells and treating rough skin conditions with increased precision and control.
Implementation Method 1
The fluid in the elastic bladder is pressurized above atmospheric pressure. The fluid in the elastic bladder is pressurized to at least 30 psia.
Implementation Method 2
A cleaning head for a personal care appliance includes an elastic bladder having a bladder wall enclosing a fluid.
Data Source
AI summary
A cleaning head for a personal care appliance includes an elastic bladder having a bladder wall enclosing a fluid. The bladder wall has an inner base portion with a base thickness, which may be non-uniform, and a plurality of spaced projections extending outwardly from the inner base portion. The bladder is fixedly attached to a receiver portion of a bladder support, and a retainer is provided for attaching the bladder support to the personal care appliance such that the bladder support is drivably engaged by the personal care appliance. At least some of the plurality of spaced projections are configured to dynamically engage and disengage with neighboring ones of the plurality of spaced projections during use.