Twisted Wire Brush Molded Tip Ball-and-Socket Assembly
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Solution Overview
Problem
Twisted in wire brushes with molded plastic or rubber applicator tips are prone to detachment during cleaning applications, leading to unraveling of the wire core and potential damage to surfaces, especially in medical and gun cleaning contexts where force is required.
Innovation Solution
A twisted in wire brush design featuring a melted or welded spherical tip on the wire core, which forms a unitary piece with the core, and a molded tip attached via a ball-and-socket connection, providing a secure and robust assembly that prevents detachment and increases structural strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods of attaching molded tips to the core section are used, then assembly is simple, but the molded tip detaches during cleaning applications requiring force
Solution Approach 1:
The patent merges the molded tip and wire core into a unitary structure by injecting molten plastic material directly onto the wire core, eliminating the need for separate attachment mechanisms. This combining approach ensures the tip cannot detach during use while maintaining assembly simplicity through a single injection process.
Solution Approach 2:
The patent creates a composite structure by bonding plastic material to the metal wire core. The molded tip is formed from plastic that is injection-molded directly onto the wire core, creating a unified composite component that combines the structural integrity of metal with the functional properties of plastic.
2Reliability
If molded tips are attached to the core section, then customization is enabled, but the tips unravel and cause surface damage under cleaning forces
Solution Approach 1:
By merging the molded tip and wire core into a unitary structure through direct injection molding, the patent eliminates the interface where unraveling could occur. The tip and core become a single integrated component, preventing the tip from detaching or unraveling during forceful cleaning operations, thereby eliminating surface damage risk.
3Reliability
If a secure attachment method is implemented, then detachment is prevented, but assembly becomes more complex
Solution Approach 1:
The injection molding process automatically creates the secure attachment by injecting molten plastic directly onto the wire core in a single operation. The process is self-contained and self-securing, as the molten material naturally bonds to the core and solidifies into a permanent attachment without requiring additional assembly steps or external fastening mechanisms.
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 ensures the molded tip remains securely attached to the wire core, preventing unraveling and surface damage, while allowing for easy assembly and customization, and provides a robust connection that withstands cleaning forces without decoupling.
Implementation Method 1
a melted or welded spherical tip on the wire core
Implementation Method 2
a melted or welded spherical tip on the wire core
Implementation Method 3
a molded tip attached via a ball-and-socket connection
Data Source
AI summary
A brush includes a wire core, a round tip formed on a distal end of the wire core, the round tip being unitary with the wire core section and being formed by melting or welding a portion of the wire core at the distal end, and a molded tip attached to the wire core at the distal end via a ball-and-socket connection.