Wave-Spring Hair Removal Head for Multi-Directional Skin Contact
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Solution Overview
Problem
Current hair removal devices are limited by their rigid and inflexible designs, which restrict multi-directional use, especially when shaving hard-to-reach areas like the back, leading to inefficiencies and increased risk of nicks and cuts due to the need for linear strokes and poor ergonomics.
Innovation Solution
A hair removal device featuring a multi-angle deflector with leaf springs or a wave spring design that allows for unrestricted multi-directional deflection of the hair removal surface, enabling it to maintain contact with the skin across various body contours and allowing for safe, efficient hair removal in any direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rigid pivot is used to allow movement of the hair removal surface, then the device can adapt to some body contours, but it is limited to deflection around one or two axes which restricts multi-directional use
Solution Approach 1:
The pivot mechanism is segmented into multiple independent leaf springs arranged radially around the hair removal surface. Each leaf spring can deflect independently in different directions, allowing the hair removal surface to adapt to multi-directional body contours while maintaining structural simplicity through modular arrangement
Solution Approach 2:
The pivot mechanism transitions from limited one or two-axis deflection to multi-axis deflection by arranging leaf springs radially in multiple dimensions. This enables the hair removal surface to pivot freely in various directions to match complex body contours like the back, shoulders, and underarms
2Adaptability or versatility
If the hair removal surface is allowed to pivot freely to improve contact with skin contours, then adaptability improves, but the surface may tip away from the skin when forces are applied in multiple directions
Solution Approach 1:
Multiple leaf springs are arranged radially around the hair removal surface to provide balanced counteracting forces. When force is applied in one direction, opposing leaf springs provide counterbalancing support, preventing the hair removal surface from tipping away from the skin while maintaining contour adaptability
Solution Approach 2:
Multiple leaf springs are combined into an integrated radial array structure that functions as a unified pivot mechanism. This merging of individual spring elements creates a stable yet flexible system that maintains hair removal surface contact with skin contours while resisting tipping forces through collective support
3Stability of the object's composition
If a rigid and inflexible design is used, then structural stability is maintained, but the device cannot adapt to heavily contoured body parts leading to poor ergonomics and increased energy expenditure
Solution Approach 1:
The device transitions from a completely rigid structure to a dynamic system with controlled flexibility through the leaf spring pivot mechanism. The hair removal surface can dynamically adjust its angle and orientation to match body contours while maintaining structural integrity, reducing the energy users must expend to maintain proper shaving angles
Solution Approach 2:
The structural parameters of the device are changed by introducing flexible leaf spring elements with specific deflection characteristics. These parameter changes allow the device to adapt its rigidity and flexibility to match the contours of different body parts, improving ergonomics while maintaining sufficient structural stability for effective hair removal
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 device ensures effective hair removal by maintaining contact with the skin across all areas, reducing the risk of nicks and cuts, and allowing for more efficient use by enabling strokes in multiple directions, thereby improving user experience and safety.
Implementation Method 1
a multi-angle deflector with leaf springs or a wave spring design that allows for unrestricted multi-directional deflection of the hair removal surface
Data Source
AI summary
A hair removal device is provided having a plurality of leaf springs joined to an applicator head, where the applicator head has a hair removal surface. The plurality of leaf springs is connected to form a wave spring. The leaf springs extend radially from a center of the hair removal surface, or the plurality of leaf springs may extend circumferentially around a perimeter of the hair removal surface. The leaf springs can be connected to each other, having the same or different dimensions. A hair removal device is provided having a wave spring joined to an applicator head which has a hair removal surface. The wave spring has a thickness of 1 mm to 100 mm, can be circular, wherein the diameter is between 1 and 10 times the thickness. The plurality of leaf springs or wave spring has a deflection stiffness ranging from 0.05 N/mm and 5N/mm.