Brush Assembly Mechanical Pressing Eliminates Adhesive
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Solution Overview
Problem
Existing brush manufacturing methods using adhesives are harmful to humans and have durability issues due to adhesive separation when exposed to heat, increasing manufacturing costs.
Innovation Solution
A brush design that mechanically presses a coupling member with a metallic tube to attach brush hairs to a brush body, eliminating the need for adhesives and incorporating a fixing member to prevent shaking, using a combination of a brush-fitting unit, brush-feeding unit, and brush-rotating unit for assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesives are used to attach brush hairs to the handle, then the manufacturing process is simple, but the adhesive may have harmful influence on human body and increases manufacturing cost
Solution Approach 1:
The patent removes the adhesive component from the brush manufacturing process entirely. Instead of using chemical adhesives to attach brush hairs to the handle, the invention uses a mechanical pressing method where the handle is pressed directly onto the brush hair bundle, eliminating harmful chemical substances from the final product.
Solution Approach 2:
The patent replaces the chemical bonding system (adhesives) with a mechanical bonding system (pressing force). The handle is mechanically pressed onto the brush hairs to create a secure attachment without requiring any chemical substances, thus substituting chemical action with mechanical action.
2Reliability
If adhesives are used to attach brush hairs, then initial attachment is achieved, but the adhered portion separates when exposed to heat and durability decreases
Solution Approach 1:
The patent replaces heat-sensitive chemical adhesives with a heat-resistant mechanical pressing system. The mechanical bond formed by pressing the handle onto the brush hairs remains stable under heat exposure, unlike chemical adhesives that soften and fail when exposed to high temperatures.
Solution Approach 2:
The patent changes the bonding mechanism from chemical (temperature-sensitive) to mechanical (temperature-resistant). By applying sufficient pressing force during manufacturing, a durable mechanical bond is created that maintains its strength across a wide temperature range, eliminating the temperature vulnerability of adhesive-based systems.
3Object-affected harmful factors
If adhesive-free mechanical pressing is used, then harmful substances are eliminated, but the coupling strength may be insufficient without adhesives
Solution Approach 1:
The patent applies preliminary pressing force during the manufacturing process to create a strong mechanical bond before the product is used. The handle is pressed onto the brush hairs with sufficient force to establish a durable connection that will withstand subsequent use and cleaning, eliminating the need for adhesives while maintaining coupling strength.
Solution Approach 2:
The patent optimizes the pressing parameters (force, duration, pressure distribution) to achieve adequate coupling strength through mechanical means alone. By carefully controlling the pressing process, a bond strength sufficient for practical use is achieved without requiring any chemical adhesives.
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 solution allows for adhesive-free assembly, preventing harmful chemical exposure and enhancing durability by securely attaching brush hairs without adhesives, while the apparatus ensures precise and stable coupling of the brush components.
Implementation Method 1
the coupling member and the brush body are combined by pressing the portion of the coupling member where the coupling member and the brush body are in contact with each other
Implementation Method 2
a fixing member that prevents shaking of the brush coupler between the brush body and the brush coupler
Data Source
AI summary
The present invention provides a brush and a manufacturing method thereof. A brush of the present invention includes: brush hairs; a brush hair part that has a brush coupler to which the brush hairs are attached; a brush body that support an end of the brush coupler; a coupling member that has a first part coupled to the brush body and a second part coupled to the edge of the brush coupler and has a metallic tube; and a fixing member that prevents shaking of the brush coupler between the brush body and the brush coupler, in which the coupling member and the brush body are combined by pressing the portion of the coupling member where the coupling member and the brush body are in contact with each other.