Radially Expandable Brush Cap for Versatile Grip
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Solution Overview
Problem
Existing brush caps are difficult to use with multiple brushes simultaneously and do not provide a secure hold, as they are designed for specific brush shapes, making them inflexible and limiting their application.
Innovation Solution
A radially expandable brush cap with resilient expansion members or an elastic material section that adapts to different brush diameters, allowing for the use with multiple brushes and enhanced clamping force through elastic restoring means, along with a supplementary part that acts as a standing aid and sealing cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the brush cap is designed for a specific brush shape with a fixed opening cross-section, then the brush cap can provide a secure hold for that specific brush, but it cannot be used with multiple brushes of different shapes or sizes
Solution Approach 1:
The brush cap incorporates a radially expandable second end with resilient expansion members that can dynamically adjust their configuration. When a brush is inserted, the expansion members resiliently expand to contact and grip the brush shaft, adapting to different diameters and shapes while maintaining a secure hold through elastic restoring force.
Solution Approach 2:
The effective opening cross-section of the brush cap is made variable through the radially expandable second end. The expansion members can change their radial position and the overall cross-sectional dimensions of the opening, allowing the same brush cap to accommodate multiple brushes with different shaft diameters and shapes while maintaining reliable contact.
2Object-affected harmful factors
If the brush cap is designed to tightly enclose a single brush, then it can protect the brush hair bundle effectively, but it becomes difficult or impossible to insert several brushes simultaneously
Solution Approach 1:
The radially expandable second end with resilient expansion members allows the brush cap to dynamically adjust its internal configuration to accommodate multiple brushes. The expansion members can expand to contact and secure multiple brush shafts simultaneously, enabling the cap to hold multiple brushes while maintaining protection through the enclosed first section.
Solution Approach 2:
The brush cap is designed to perform multiple functions: it can protect single or multiple brushes from contamination, hold brushes of different shapes and sizes, and provide structural support. The radially expandable mechanism enables the same cap structure to universally accommodate various brush configurations while maintaining protective enclosure.
3Adaptability or versatility
If the brush cap opening is widened in a mouth-like manner to accommodate different brushes, then it can increase versatility, but it becomes difficult to ensure complete enclosure of the brush hair bundle and parts may get caught in the seam
Solution Approach 1:
Instead of a fixed mouth-like widening, the second end is designed to be radially expandable with resilient expansion members. This dynamic structure expands uniformly when brushes are inserted, maintaining smooth surfaces that prevent hair bundles from getting caught in seams while still accommodating different brush sizes and shapes.
Solution Approach 2:
The radially expandable second end acts as a flexible structure that can adapt its shape to accommodate different brush configurations. The resilient expansion members provide a smooth, continuous surface that encloses the brush hair bundles completely without creating sharp seams or gaps where hair could be trapped.
4Shape
If the brush cap is precisely adapted to the shape and fullness of an individual brush, then it can keep the brush hair bundle in shape, but it cannot be used for differently shaped brushes or multiple brushes at the same time
Solution Approach 1:
The radially expandable second end with resilient expansion members provides dynamic adaptation to different brush shapes and sizes. The expansion members can conform to various brush shaft configurations while the first section maintains its protective enclosure, allowing the cap to work with different brush types without compromising shape maintenance or versatility.
Solution Approach 2:
Different parts of the brush cap have different functions: the first section provides protective enclosure to maintain brush shape, while the radially expandable second end provides adaptive gripping for different brush configurations. This local differentiation of qualities allows the cap to simultaneously maintain brush shape and accommodate various brush types.
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
Enables flexible use with various brush sizes and shapes, providing a secure hold and supporting user handling, while also protecting the brushes from contamination and mechanical influences.
Implementation Method 1
a second section (B) of the brush cap (1), forming the second end (4), which is designed in such a way that it can be expanded radially, in particular starting from a central axis and can be expanded from the inside to the outside independently of the basic cross section of the brush cap (1)
Implementation Method 2
an inherently elastic second material section (17) of the brush cap (1), which forms the second open end (4)
Data Source
Figure 1~3
Figure 4~9
AI summary
In the case of a brush cap for protecting a bundle of hair of a cosmetic and/or painting or artist's brush, in order to achieve more flexible application, also for a plurality of brushes or for different brush shapes and in order to extend the application range of the brush cap, it is provided that a second end of the brush cap, through which a brush shaft protrudes when the brush cap is used as intended, is radially expandable.