Toothbrush Head Connecting Member With Elastic Piece
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Solution Overview
Problem
Existing electric toothbrushes have complex and costly structures for detachably connecting the toothbrush head and body, which complicates assembly and manufacturing.
Innovation Solution
A toothbrush head design featuring a brush rod with a holding groove and a connecting member, including an elastic piece that resists against the inner sidewall to secure the connecting body, allowing the driving shaft to be inserted and engaged without extra fixing structures, simplifying the design and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a holder is used to fix the elastic piece in the toothbrush head, then the connecting member is securely fixed, but the structure becomes complex and manufacturing cost increases
Solution Approach 1:
The patent removes the holder component from the traditional structure. Instead of using a separate holder to fix the elastic piece, the elastic piece is directly inserted into a groove formed on the brush rod, eliminating the holder and simplifying the structure while maintaining fixing reliability
Solution Approach 2:
The fixing function previously performed by a separate holder is merged into the brush rod itself through the groove structure. The groove is directly formed on the brush rod surface, combining the support and fixing functions into a single integrated component
2Reliability
If a holder is used to fix the elastic piece, then the connecting member is securely fixed, but manufacturing and assembly cost increases
Solution Approach 1:
By removing the holder component, the patent reduces the number of parts that need to be manufactured and assembled. The groove is directly formed on the brush rod, eliminating the need for separate holder manufacturing and assembly operations, thereby reducing manufacturing cost
Solution Approach 2:
The brush rod is given multiple functions: it serves as both the structural support and the fixing mechanism through the groove. This multi-functionality reduces the overall component count and associated manufacturing costs
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
This design simplifies the structure, reduces manufacturing costs, enhances stability, and improves the oral cleaning effect by allowing for closer bristle contact with the tooth surface.
Implementation Method 1
an elastic piece connected to the connecting body. The connecting body is arranged inside the holding groove, the elastic piece is arranged between the opening and the connecting body and resists against an inner sidewall surrounding the holding groove to prevent the elastic piece from moving out of the holding groove
Data Source
AI summary
A toothbrush head for an electric toothbrush including a driving shaft, includes a brush rod and a connecting member. The brush rod has a first end configured to carry bristles and a second end configured to be connected with the driving shaft, the second end defines a holding groove, and a lower surface of the second end is provided with an opening communicated with the holding groove. The connecting member includes a connecting body and an elastic piece connected to the connecting body. The connecting body is arranged inside the holding groove, the elastic piece is arranged between the opening and the connecting body and resists against an inner sidewall surrounding the holding groove. The opening and the holding groove are configured to allow the driving shaft to be inserted therethrough to be engaged with the connecting body.