Polygonal Cosmetic Brush With Segmented Bristle Configurations
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Solution Overview
Problem
Conventional brushes, such as mascara or hair coloring brushes, have limited design options due to their production methods, restricting the arrangement and formation of bristles, which affects their application and manageability.
Innovation Solution
An injection-molded brush with a polygonal main body and varying bristle configurations on different sides, allowing for different combing and application properties by adjusting the angle of the brush, featuring bristles with specific shapes and spacings for optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If brushes are produced by injection molding, then design options for bristle formation and arrangement are extensive, but manufacturing complexity increases compared to conventional twisted wire production
Solution Approach 1:
The brush head is segmented into multiple functional sides (first side with straight bristles for application, second side with curved bristles for combing) that can be independently designed with different bristle configurations. This segmentation allows each side to be optimized for its specific function while maintaining a unified injection-molded structure.
Solution Approach 2:
Different regions of the brush head are given different local qualities through varying bristle characteristics. The first side has bristles with first characteristics (straight, for application) while the second side has bristles with second characteristics (curved, for combing). This local differentiation enables multifunctionality within a single component.
2Adaptability or versatility
If the main body is designed as a polygon with different side lengths, then different bristle configurations can be provided on different sides for varied combing and application properties, but the manufacturing precision requirements increase
Solution Approach 1:
The main body is designed as a polygon with asymmetric side lengths, where at least one side length differs from another. This asymmetry enables the creation of distinct functional zones on different sides of the brush head, allowing optimization for multiple functions (application, combing, styling) within a single unified structure.
3Productivity
If bristles are arranged in bristle-ring-like configurations with high density, then application efficiency is improved, but the difficulty of detecting and measuring bristle arrangement increases
Solution Approach 1:
The bristles are arranged in bristle-ring-like configurations that extend in the longitudinal direction of the brush head, creating a three-dimensional spatial arrangement. This dimensional organization allows for high bristle density while maintaining detectable patterns through cross-sectional views and longitudinal profiles.
Data Source
AI summary
In a brush for applying cosmetic substances, especially a mascara brush or hair coloring brush, which is injection-molded from plastic as one piece and comprises a first section for connection to a rod and a second section, said second section having a main body from which a plurality of bristles protrude radially outward, provision is made for the main body to be designed as a polygon in cross section.