Electric Toothbrush Head Stabilization via Groove Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current electric toothbrush replacement heads have an unreasonable structure, leading to a short service life, frequent replacement needs, and instability due to complex internal components and motor vibration, which affects the normal use and cleaning efficiency of electric toothbrushes.
Innovation Solution
The electric toothbrush replacement head features a simplified structure with a replacement head handle, through-grooves, reinforced ribs, and a transmission directional elongated groove to stabilize the transmission shaft, reducing motor noise and vibration, and facilitating easy assembly and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a transmission assembly with motor is used to drive the toothbrush head to vibrate, then cleaning efficiency is improved, but device complexity and production cost increase
Solution Approach 1:
The patent extracts the motor and transmission assembly from the replacement head, leaving only the bristle assembly and connection interface. The motor remains in the handle, and the replacement head simply connects to it. This extraction eliminates complex internal structures from the replacement head while maintaining the vibration-driven cleaning function, directly resolving the contradiction between cleaning efficiency and device complexity.
2Productivity
If a transmission assembly with multiple parts is used, then the toothbrush head can vibrate for cleaning, but production cost and destruction rate increase
Solution Approach 1:
The patent segments the electric toothbrush into two distinct parts: the handle containing the motor and transmission assembly, and the replacement head containing only the bristle assembly and connection interface. This segmentation allows the expensive motorized portion to be reused while only the inexpensive bristle portion needs replacement, reducing production costs and destruction rates.
Solution Approach 2:
The replacement head is designed as a disposable component with no motor or expensive parts, containing only bristles and a simple connection interface. This allows the inexpensive replacement head to be frequently replaced while the expensive handle with motor is reused, directly addressing the production cost and destruction rate issues.
3Productivity
If the motor rapidly rotates to drive vibration, then cleaning effect is improved, but motor noise and vibration affect normal use
Solution Approach 1:
The patent extracts the noise-generating motor from the replacement head, eliminating the source of motor noise and unwanted vibration from the replacement head itself. The motor remains in the handle where it can be isolated, while the replacement head only performs the cleaning function through bristle vibration transmitted from the handle.
Data Source
AI summary
An electric toothbrush replacement head is provided and includes a replacement head handle; an opening disposed on an end of the replacement head handle; a transmission connecting part disposed in the opening; at least one through-groove disposed on an edge of the transmission connecting part; a transmission directional elongated groove disposed in the transmission connecting part; reinforced ribs disposed between the transmission connecting part and a portion where the replacement head handle is provided with the opening. The electric toothbrush replacement head with a reasonable structure is easy to replace and stable for using. Furthermore, the electric toothbrush replacement head is convenient, safe and reliable, which can also eliminate motor noise.