Electric Toothbrush Head Assembly With Integrated Drive Shaft Fixing
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Solution Overview
Problem
Existing electric toothbrush heads have complex structures that complicate production, increase costs, and make replacement inconvenient, with potential damage risks during assembly.
Innovation Solution
An electric toothbrush head design featuring a bristle part with a water chamber and spray hole, a tubular brush handle with an internal water flow channel, and a tail plug with a fixture slot for direct coupling with the drive shaft, eliminating redundant components and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the toothbrush head uses a complex structure with multiple components (adapter, sealing element, attachment component, retaining clip), then the drive shaft can be securely fixed, but the production difficulty increases and costs rise
Solution Approach 1:
The patent combines multiple components (adapter, sealing element, attachment component, retaining clip) into a single integrated toothbrush head structure. The drive shaft fixing structure is merged with the toothbrush head body, eliminating the need for separate assembly of multiple parts while maintaining secure fixation through the integrated design of the fixing groove and elastic component.
Solution Approach 2:
The toothbrush head structure is designed to perform multiple functions within a single component. The integrated structure serves as both the housing and the drive shaft fixing mechanism, combining sealing, positioning, and fixation functions in one piece, thereby reducing overall device complexity while maintaining reliability.
2Reliability
If the toothbrush head uses a complex structure with multiple components, then the drive shaft can be securely fixed, but the assembly process becomes more difficult and time-consuming
Solution Approach 1:
By merging the drive shaft fixing mechanism into the toothbrush head body as an integrated structure, the number of assembly steps is reduced. The elastic component and fixing groove are pre-integrated into the head, allowing for quicker assembly compared to separately assembling multiple components like adapters and retaining clips.
Solution Approach 2:
The toothbrush head is designed with a modular integrated structure where the fixing mechanism is built-in. This segmentation allows the entire head assembly to be treated as a single unit during assembly, improving productivity by reducing the number of discrete assembly operations required.
3Reliability
If the toothbrush head uses a complex structure with multiple components, then the drive shaft can be securely fixed, but user replacement becomes inconvenient and damage risk increases
Solution Approach 1:
The drive shaft fixing structure is merged into the toothbrush head as an integrated design. Users simply need to detach the entire head unit from the handle, without needing to manipulate separate components like adapters or retaining clips, making replacement more convenient and reducing the risk of damaging individual parts during the process.
Solution Approach 2:
The complex multi-component fixing mechanism is extracted and replaced with a simplified integrated structure. The essential fixation function remains through the built-in elastic component and fixing groove, but the removal of unnecessary separate components makes user replacement easier and safer.
4Device complexity
If the toothbrush head uses a simple structure with fewer components, then production costs are reduced, but the drive shaft fixation reliability may be compromised
Solution Approach 1:
The patent merges the drive shaft fixing mechanism into the toothbrush head body as an integrated structure. This single-component design maintains reliability through the built-in elastic component and fixing groove while reducing overall device complexity and eliminating the need for multiple separate parts.
Solution Approach 2:
The toothbrush head structure is designed to self-fix the drive shaft through its integrated elastic component and fixing groove. The structure automatically provides the necessary fixation function without requiring additional separate components, maintaining reliability while simplifying the overall design.
5Device complexity
If the toothbrush head uses a simple structure with fewer components, then production difficulty is reduced, but assembly precision requirements increase
Solution Approach 1:
By merging the fixing mechanism into the toothbrush head body, the structure achieves simplicity while the integrated design inherently guides assembly precision. The built-in fixing groove and elastic component are positioned during molding, reducing the need for high-precision manual assembly compared to fitting multiple separate components together.
Data Source
AI summary
The present disclosure provides an electric toothbrush head, comprising a bristle part and a handle part, with a water chamber on the bristle part connected to a spray hole; a water flow channel is arranged inside the handle part, connecting to the water chamber; the handle part is provided with a receiving hole, which has a detent block with a guide inclined surface; a tail plug is installed in the tail hole, and a fixture slot is provided on the tail plug; a U-shaped fixture is inserted into the fixture slot. The beneficial effect of this solution lies in: simplifying the structure of the electric toothbrush head, facilitating production and use.