Epilation Barrel Contact Pressure Feedback for Skin Irritation Control
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Solution Overview
Problem
Current epilation devices lack the ability to measure and provide feedback on the optimal contact pressure required for effective hair removal, leading to skin irritation and reduced performance due to either excessive or insufficient pressure application.
Innovation Solution
An epilation device with a control unit that analyzes contact pressure by calculating it from the current consumed by the drive unit, using adaptive baselines to provide consistent feedback, and compares it to predefined thresholds, triggering actions such as indicator signals, adjusting the drive unit's performance, or altering the epilation barrel's movement to guide the user in applying the correct pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the user applies high contact pressure to ensure good adherence of the epilation barrel to the skin, then the adherence and hair removal effectiveness is improved, but skin irritation increases and the barrel rotational speed decreases due to excessive friction
Solution Approach 1:
The control unit continuously monitors the contact pressure between the epilation barrel and skin using current consumption measurements, and provides real-time feedback to the user through the feedback unit when the pressure deviates from the optimal range, enabling the user to adjust and maintain optimal pressure
Solution Approach 2:
The patent replaces direct mechanical pressure sensing with an electrical measurement system that monitors current consumption of the drive unit, from which contact pressure is calculated indirectly, avoiding complex mechanical sensors
2Productivity
If the user applies high contact pressure to ensure good adherence of the epilation barrel to the skin, then the adherence and hair removal effectiveness is improved, but the barrel rotational speed decreases due to increased friction
Solution Approach 1:
The control unit continuously monitors the contact pressure between the epilation barrel and skin using current consumption measurements, and provides real-time feedback to the user through the feedback unit when the pressure deviates from the optimal range, enabling the user to adjust and maintain optimal pressure
Solution Approach 2:
The feedback unit provides periodic or continuous monitoring and signaling to the user, enabling dynamic adjustment of contact pressure to maintain optimal barrel speed while ensuring adequate skin adherence
3Object-affected harmful factors
If the user applies slight contact pressure to avoid skin irritation, then skin comfort is improved, but the adherence of the barrel to the skin becomes suboptimal reducing hair removal performance
Solution Approach 1:
The control unit continuously monitors the contact pressure between the epilation barrel and skin using current consumption measurements, and provides real-time feedback to the user through the feedback unit when the pressure deviates from the optimal range, enabling the user to adjust and maintain optimal pressure
Solution Approach 2:
The system enables the user to self-regulate the contact pressure by providing clear feedback signals, allowing the user to automatically adjust and maintain optimal pressure without external guidance
4Device complexity
If the contact pressure is not properly controlled, then device simplicity is maintained, but the drive unit experiences increased wear and power consumption
Solution Approach 1:
The control unit continuously monitors the contact pressure between the epilation barrel and skin using current consumption measurements, and provides real-time feedback to the user through the feedback unit when the pressure deviates from the optimal range, enabling the user to adjust and maintain optimal pressure
Solution Approach 2:
The patent replaces direct mechanical pressure sensing with an electrical measurement system that monitors current consumption of the drive unit, from which contact pressure is calculated indirectly, avoiding complex mechanical sensors
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 ensures optimal contact pressure is maintained, preventing skin irritation and device damage while enhancing hair removal performance by providing real-time feedback to the user, thus improving user experience and device longevity.
Implementation Method 1
the control unit (20) is arranged to calculate the contact pressure (30b) from a current consumed by the drive unit (12) to drive the epilation barrel (14)
Data Source
Figure 1~2
Figure 3
AI summary
There is provided an epilation device for removing body hair with at least one epilation unit, in particular a epilation barrel, comprising a plurality of pairs of tweezers for pinching and pulling out hairs from the skin. The epilation device further comprises a drive unit for driving the at least one epilation barrel and a control unit. The control unit is arranged to analyze the force with which the user presses the epilation unit to the skin resulting in contact pressure and compares the contact pressure applied to at least one threshold contact pressure. Optionally, the epilation device may further comprise a feedback unit which signals to the user, whether the contact pressure applied is smaller than, equal to or larger than the at least one threshold contact pressure.