Hair Removal Apparatus Dynamic Force Control
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Solution Overview
Problem
Existing hair removal apparatuses often suffer from high noise levels and reduced battery life due to constant operation, which affects user acceptance and sustainability.
Innovation Solution
A hair removal apparatus with a movable hair-removal component, a pressing component, a skin proximity sensing component, and a force adjusting component that adjusts the pressing force based on the distance from the skin, allowing for a non-functional mode with reduced noise and energy consumption when not in contact with the skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hair-removal apparatus operates continuously with constant pressing force, then the hair removal function is maintained, but noise level increases and battery life decreases
Solution Approach 1:
The pressing force is made dynamic rather than constant. The apparatus adjusts the pressing force between a first value (when skin is detected) and a second value (when skin is not detected), allowing the system to adapt to operational conditions and reduce noise during non-active periods
Solution Approach 2:
A sensor detects skin contact and provides feedback to the control unit, which then adjusts the pressing force accordingly. This closed-loop control ensures the pressing force is applied only when needed, reducing unnecessary noise and energy consumption
2Reliability
If the hair-removal apparatus operates continuously with constant pressing force, then the hair removal function is maintained, but energy consumption increases
Solution Approach 1:
The pressing force is dynamically adjusted based on skin detection. The control unit switches between a first pressing force value (during operation) and a second pressing force value (at rest), significantly reducing energy consumption when the apparatus is not actively removing hair
Solution Approach 2:
The sensor provides continuous feedback on skin contact status, enabling the control unit to optimize energy usage by applying pressing force only when hair removal is actually occurring or about to occur
3Productivity
If the pressing force is increased for effective hair removal, then the hair removal efficiency is improved, but the contact force between components increases causing more noise
Solution Approach 1:
The pressing force is dynamically controlled to provide high contact force between hair-contacting members only when needed for effective hair removal, while minimizing contact force during transport or non-active periods, thereby reducing noise without compromising efficiency
Data Source
AI summary
A hair-removal apparatus is provided that comprises a hair-removal device with a movable hair-removal component, which comprises at least a first hair-contacting member and a second hair-contacting member, which are movable relative to each other and which are configured and arranged to mutually co-operate for removing hairs by mutually exerting a contact force, a pressing component configured and arranged to generate said contact force by exerting a pressing force on the movable hair-removal component during operation, a skin proximity sensing component, and a force adjusting component. The skin proximity sensing component is configured and arranged to detect a relative distance between the movable hair-removal component and a portion of the skin with hairs to be removed. The force adjusting component is configured and arranged to adjust, during operation, the pressing force exerted by the pressing component in dependence on the relative distance detected by the skin proximity sensing component.