C-Shaped Brush Head with U-Groove for Flexible Tooth Cleaning
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Solution Overview
Problem
Existing multi-sided electric toothbrush heads suffer from structural inflexibility and rigidity, leading to potential damage and increased risk of gum injury due to insufficient flexibility and excessive stiffness.
Innovation Solution
A three-sided brush head design featuring a C-shaped body with a sleeve rod, injection-molded brush blocks, and an arc-shaped U-groove for enhanced flexibility and crush resistance, combined with a protective cover for added protection and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-sided brush heads are designed with rigid structures to enable multi-sided tooth cleaning, then cleaning efficiency is improved, but the brush head becomes prone to damage and may injure gums due to insufficient flexibility
Solution Approach 1:
The brush head body is designed with a C-shaped configuration that inherently provides flexibility while maintaining structural integrity. This curved geometry allows the brush head to adapt to different tooth surfaces without requiring rigid connections, thereby preventing damage to both the brush head and gum tissue during multi-sided cleaning operations
Solution Approach 2:
The brush head incorporates a dynamic structure where the C-shaped body can flex and adapt during operation. This dynamic design allows the brush head to respond to varying oral conditions, maintaining effective cleaning contact while avoiding excessive force that could cause injury, thus resolving the contradiction between cleaning efficiency and safety
2Strength
If the brush head body is made rigid to maintain structural stability during operation, then connection strength is improved, but flexibility is reduced leading to potential damage and gum injury
Solution Approach 1:
The C-shaped brush head body serves as a flexible shell structure that maintains adequate structural strength while allowing necessary flexion. The curved geometry provides inherent flexibility without compromising the connection strength between brush blocks and the head body, enabling both rigidity for stable operation and flexibility for safety
3Area of stationary object
If the overall brush head structure is enlarged to accommodate multiple brushing surfaces, then cleaning coverage is improved, but the structure becomes more complex and prone to damage
Solution Approach 1:
The brush head is segmented into multiple functional zones with brush blocks positioned at different locations on the C-shaped body. This segmentation allows comprehensive tooth surface coverage while keeping each individual brush block simple and manageable, reducing overall structural complexity despite the extended cleaning area
Solution Approach 2:
The C-shaped configuration utilizes three-dimensional spatial arrangement to provide multi-sided cleaning capability. By distributing brush blocks along the curved path of the C-shape, the design achieves extensive cleaning coverage without requiring a complex assembly of separate components, thereby maintaining structural simplicity
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 allows for comprehensive three-sided tooth cleaning while improving flexibility and reducing the risk of damage to the brush head and gum, enhancing brushing efficiency and comfort.
Implementation Method 1
the U-groove is in an arc shape, so that the brush head body can elastically deform more easily after both ends are stressed, and the flexibility is improved
Implementation Method 2
a back side of a top end of the sleeve rod is correspondingly mounted in the connecting groove and is integrally injection-molded in the connecting groove, brush blocks are injection-molded in the mounting grooves
Data Source
AI summary
A three-sided brush head for electric toothbrushes comprises a C-shaped brush head body and a sleeve rod to be disposed around a power shaft of an electric toothbrush. A connecting groove is formed in a front side of the middle of the brush head body, and mounting grooves are formed in front sides of two ends of the brush head body. A back side of a top end of the sleeve rod is correspondingly mounted and integrally injection-molded in the in the connecting groove. Brush blocks are correspondingly injection-molded in the mounting grooves. Brush sets are disposed on the front side of the top end of the sleeve rod and on the brush blocks. An arc-shaped U-groove is formed in a back side of a corner of the brush head body.