Hair Applicator Comb Structure for Secure Porous Part Attachment
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Solution Overview
Problem
Existing hair applicators face issues with securing the applying part to prevent displacement and ensuring a sufficient coating amount, with previous designs either compromising on fixing strength or porosity, leading to skin staining or inadequate contact with hair.
Innovation Solution
A hair applicator design featuring a porous applying part with a T-shape and a comb structure that includes beams and projected portions to securely attach the applying part, maintaining porosity for adequate coating while preventing displacement and skin staining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a hard applying part is used to increase fixing strength, then the fixing strength is improved, but the porosity is reduced which narrows the fluid passage and decreases the coating amount
Solution Approach 1:
The combing body is designed with differentiated local properties: the front surface maintains high porosity for fluid absorption and application, while the rear surface and internal structure provide sufficient mechanical strength through the comb teeth configuration and material distribution, resolving the contradiction between fixing strength and coating amount
2Object-affected harmful factors
If the spacing between comb elements is increased to prevent skin staining, then the skin staining is reduced, but the contact strength of the applying part against hair is weakened which decreases the coating amount
Solution Approach 1:
The applying part is designed as a flexible porous material that can adapt to the contours of the head and hair, maintaining effective contact with hair even with reduced spacing between comb elements, while the front surface design prevents direct contact with skin, thus resolving the contradiction between preventing skin staining and maintaining coating amount
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 design effectively secures the applying part with sufficient strength to prevent displacement and ensures a substantial coating amount, while minimizing skin staining through the use of beams and a specific comb configuration.
Implementation Method 1
an applying part 10 of a porous material... to apply and infiltrate the application liquid to the hair
Data Source
Figure 1(a)~1(h)
Figure 2(a)~2(h)
Figure 3(a)~3(i)
AI summary
To provide a hair applicator which can fix an applying part to combing elements with a sufficient fixing strength to prevent the applying part from being displaced even by an impact from a fall and also can dispense a sufficient coating amount. The hair applicator is configured such that the coating amount by the applying part is 0.090 g/m or greater (porosity is 80% or higher) and the hardness (ISO7619A) of the applying part is less than A70.