Radial Array Toothbrush Head for Dentifrice Retention
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Solution Overview
Problem
Conventional toothbrushes with tufts of bristles and multi-part wheeled hub designs suffer from reduced cleaning efficiency due to dentifrice slipping through the bristles and large areas devoid of bristles, which also increase manufacturing costs and complexity.
Innovation Solution
A toothbrush with a radial array of independently flexible cleaning elements strategically oriented at an angle to maximize cleaning effectiveness, including a fluid retaining portion to concentrate dentifrice on the toothbrush head, and a manufacturing method that integrates the radial array directly with the base plate to eliminate assembly costs and enhance cleaning performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional multi-part wheeled hub designs are used, then the toothbrush structure is established, but the device complexity increases and manufacturing costs increase due to multiple parts to track and assemble
Solution Approach 1:
The patent merges the hub and radial array into a single integrated base plate structure. The base plate includes a central hub region and radial arrays as one unified component, eliminating the need for separate hub parts and reducing assembly steps. This integration directly addresses the complexity and manufacturing cost issues by consolidating multiple parts into one molded piece.
Solution Approach 2:
The base plate is segmented into functional regions including a central hub region, multiple radial arrays with cleaning elements, and bristle mounting areas. This segmentation allows each region to perform its specific function while maintaining overall structural integration, resolving the contradiction between structural complexity and ease of manufacture.
2Device complexity
If multi-part wheeled hub designs are used, then the toothbrush structure is established, but the assembly time increases due to multiple parts to track and assemble
Solution Approach 1:
The hub and radial arrays are merged into a single base plate component that is molded as one piece. This eliminates the need to track and assemble multiple separate parts, directly reducing assembly time while maintaining the functional complexity of the toothbrush structure.
3Productivity
If conventional tufts of bristles are used, then the toothbrush structure is established, but the cleaning efficiency decreases due to dentifrice slipping through the tufts and away from the contact between bristles and teeth
Solution Approach 1:
The patent transitions from conventional tuft-based bristle arrangements to a radial array configuration where cleaning elements are arranged in radial patterns extending from the central hub. This dimensional reorganization allows for better dentifrice retention and directs cleaning action more effectively across the tooth surface, preventing dentifrice from slipping away.
Solution Approach 2:
The base plate incorporates specific regional features including raised portions, recesses, and fluid retention zones at strategic locations within the radial arrays. These local structural variations create areas that retain dentifrice and concentrate cleaning action where needed, improving cleaning efficiency while preventing dentifrice loss.
4Productivity
If conventional multi-part wheeled hub designs are used, then the toothbrush structure is established, but large areas of brush head interior are devoid of bristles, reducing cleaning efficiency
Solution Approach 1:
The integration of the hub and radial arrays into the base plate allows bristle mounting areas to extend into regions that would otherwise be empty space in conventional designs. The radial arrays are positioned to maximize bristle coverage while maintaining structural integrity, eliminating large devoid areas and improving overall cleaning efficiency.
Data Source
AI summary
A toothbrush includes a head and a plurality of tooth cleaning elements for enhanced cleaning of the teeth. The tooth cleaning elements include cleaning elements that define a radial array arrangement for better retention of the dentifrice. A radial array may be strategically disposed in an off-axis arrangement within other cleaning elements on the head.