Multi-Shaft Toothbrush With Removable Brush Drums for Uniform Cleaning
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Solution Overview
Problem
Existing toothbrushes, both manual and electric, often fail to provide uniform pressure and attention to all teeth, particularly molars, due to their single-head design, leading to inadequate cleaning and potential neglect of certain areas, especially in varying mouth sizes and shapes.
Innovation Solution
A power toothbrush with a central frame and adjustable dual frames, featuring flexible shafts and removable drums with bristles, allowing for customizable alignment and rotation direction to accommodate different jaw sizes and shapes, ensuring thorough cleaning while minimizing gum abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-head brush design is used, then the device structure is simple and easy to manufacture, but the cleaning uniformity across different teeth positions deteriorates
Solution Approach 1:
The single brush head is divided into multiple independent brush modules, each with its own bristle cluster. These modules are arranged in a specific pattern to cover different tooth surfaces simultaneously, allowing each module to apply uniform pressure to its designated area while maintaining overall structural simplicity
Solution Approach 2:
Multiple brush modules are merged into a single integrated brush head that contacts multiple teeth at once. The modules work together in unison during the brushing motion, combining their cleaning actions to achieve uniform cleaning across all tooth positions while maintaining a relatively simple overall structure
2Adaptability or versatility
If a single frame brush is designed to accommodate most mouth types, then the device has high adaptability, but the fit precision for individual jaw sizes deteriorates
Solution Approach 1:
The brush head incorporates flexible elements and adjustable components that can dynamically adapt to different jaw sizes and shapes. The brush modules can move independently or in coordinated fashion to conform to the specific geometry of the user's mouth, maintaining both adaptability and precision fit
Solution Approach 2:
The brush head design allows for adjustment of key parameters such as brush module spacing, angle, and pressure distribution. Users can modify these parameters to match their specific jaw characteristics, enabling the same brush design to achieve precise fit across different mouth types through parameter optimization
3Device complexity
If a single head brush is used to clean all teeth, then the device complexity is low, but the cleaning time required increases
Solution Approach 1:
The brush head is segmented into multiple cleaning zones with specialized brush modules for different tooth surfaces (incisors, canines, premolars, molars). This segmentation allows simultaneous cleaning of multiple tooth positions in a single brushing motion, reducing total cleaning time while maintaining manageable device complexity
Solution Approach 2:
The brush head transitions from a single-point contact design to a multi-point contact design, effectively adding spatial dimensions to the cleaning action. Multiple brush modules contact different teeth simultaneously, converting a sequential cleaning process into a parallel process that reduces time while keeping the brush head configuration relatively simple
4Ease of operation
If pressure is applied uniformly across all teeth with a single head brush, then the operation is simple, but the cleaning effectiveness at hard-to-reach positions deteriorates
Solution Approach 1:
Different brush modules within the brush head have different bristle characteristics (length, stiffness, density) optimized for specific tooth positions. Modules contacting molars and other hard-to-reach areas have bristles designed to deliver appropriate pressure and cleaning action for those locations, while maintaining simple overall brushing motions
Solution Approach 2:
The brush modules are designed with varying degrees of flexibility and independence, allowing them to dynamically adjust pressure distribution based on local tooth geometry. Modules can independently conform to the specific contours of different tooth positions, ensuring effective cleaning without requiring complex user technique
Data Source
AI summary
The disclosed device is a power or electrical toothbrush having a central drive motor power at least one shaft using a loop. There are at least 2 to four shafts that support removable drums having brush bristles. The two to four shafts are rotated with ribbon connection to at least one central shaft. The drums are removable and represent the brush head of the disclosed device.