Cosmetic Device Vibration Motor Eccentric Shaft
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Solution Overview
Problem
Existing facial cleansing brushes with multiple vibration motors are costly and inefficient in removing dirt from the skin and pores, while hairbrush techniques that eliminate vibration in the direction of brush bristles are not effective for facial cleansing.
Innovation Solution
A cosmetic device with a single vibration motor equipped with an eccentric shaft and a displaceable motor holding portion, which transmits complex vibrations to the brush attachment portion extending in a direction different from the axial direction, allowing for efficient dirt removal from the skin and pores.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple vibration motors are used to generate complex vibration, then the vibration effectiveness is improved, but the device complexity and cost increase
Solution Approach 1:
The single vibration motor is segmented into multiple functional components: the motor housing, the rotary shaft, the偏心 weight, and the brush attachment portion. Each component performs a specific function in generating and transmitting complex vibration, allowing one motor to replace multiple motors while maintaining vibration effectiveness.
Solution Approach 2:
The brush attachment portion extends in a direction different from the axial direction of the rotary shaft, creating a spatial relationship that enables complex vibration patterns. This dimensional arrangement allows the single motor to generate multi-directional vibration effects that would normally require multiple motors.
2Reliability
If the brush attachment portion extends in the axial direction of the rotary shaft, then the structure is simplified, but the complex vibration needed for pore cleaning is reduced
Solution Approach 1:
The brush attachment portion is positioned to extend in a direction different from the axial direction of the rotary shaft, creating a non-collinear spatial relationship. This dimensional configuration enables the transmission of complex vibration patterns that combine axial and radial components, which are essential for effective pore cleaning while maintaining a relatively simple single-motor structure.
3Reliability
If the motor holding portion is strongly restrained by the main body portion, then the structural stability is improved, but the vibration transmission efficiency decreases
Solution Approach 1:
The coupling portion is designed to provide a dynamic connection between the motor holding portion and the main body portion. This dynamic coupling allows the motor holding portion to move relative to the main body portion during operation, optimizing vibration transmission while maintaining structural stability through controlled flexibility rather than rigid restraint.
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 device efficiently transmits complex vibrations to the brush tips, effectively removing dirt from the skin and pores while reducing friction and irritation, using a single motor to simplify the design and reduce costs.
Implementation Method 1
a vibration motor disposed in the main body portion and having a rotary shaft equipped with an eccentric weight
Data Source
AI summary
A cosmetic device having a main body portion, and a brush portion disposed outside the main body portion, the cosmetic device including a vibration motor disposed in the main body portion and having a rotary shaft equipped with an eccentric weight; a motor holding portion that holds the vibration motor; a coupling portion disposed in the main body portion that connects the motor holding portion to the main body portion in a relatively displaceable state; and a brush attachment portion extending from the motor holding portion and connected to the brush portion, wherein the brush attachment portion extends in a direction different from an axial direction of the rotary shaft in the vibration motor.