Electric Shaver Load Adjustment Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric shavers face challenges in maintaining an optimal pressing force for outer blades against the skin, leading to either excessive pressure or insufficient contact, which affects shaving efficiency and skin comfort.
Innovation Solution
An electric shaver with a load adjustment mechanism that includes a float mechanism, a movable mechanism, a sensor, and a controller to dynamically adjust the pressing force of the outer blades by detecting the applied load and controlling the movement of a reception part, ensuring a consistent and appropriate pressing force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a spring is used to bias the outer blade upward, then the outer blade can be pressed against the skin with appropriate pressing force, but the pressing force cannot be dynamically adjusted to be more appropriate
Solution Approach 1:
The patent applies the dynamics principle by replacing the static spring mechanism with a dynamic load adjustment mechanism that can actively modify the pressing force. The reception part is movable in the upward direction, and the controller adjusts its position based on detected load values, enabling the pressing force to adapt dynamically during shaving operations rather than remaining fixed.
Solution Approach 2:
The patent implements feedback by using a sensor to detect the load applied to the outer blade and feeding this information back to the controller. The controller then adjusts the reception part's position based on the detected load, creating a closed-loop control system that automatically regulates the pressing force to maintain optimal values during shaving.
2Ease of operation
If the outer blade is held movably with spring biasing, then the blade can contact the skin, but the pressing force consistency across multiple blades cannot be ensured
Solution Approach 1:
The feedback principle ensures pressing force consistency by having the sensor detect the load on each outer blade individually and the controller adjust each blade's reception part position based on its specific load condition. This individualized feedback control compensates for variations in blade wear, skin conditions, and positioning, maintaining uniform pressing force across all blades during shaving.
Solution Approach 2:
The system applies self-service by automatically detecting and correcting pressing force variations without user intervention. The sensor and controller work autonomously to monitor and adjust the position of each reception part, ensuring consistent pressing force across all outer blades throughout the shaving process without requiring manual calibration or adjustment by the user.
3Adaptability or versatility
If a load adjustment mechanism with sensor and controller is added, then the pressing force can be dynamically adjusted, but the device complexity increases
Solution Approach 1:
The dynamics principle enables dynamic pressing force adjustment through a relatively simple mechanism: the reception part that can move upward and the actuator that moves it. This dynamic capability is achieved without overly complex structures by focusing on the essential movement and control functions needed for load adjustment.
Solution Approach 2:
The patent replaces complex mechanical spring-based adjustment mechanisms with a sensor-based detection system and a controlled actuation system. Instead of using multiple springs or mechanical linkages to achieve load adjustment, the system uses electronic sensing of the load and electronic control of the actuator to move the reception part, substituting mechanical complexity with sensorimotor control.
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 solution allows for a consistent and appropriate pressing force to be maintained across all outer blades, enhancing shaving efficiency while reducing skin burden and improving comfort by preventing excessive pressure or weak contact.
Implementation Method 1
a float mechanism that includes a biasing member that biases the outer blade toward one side in one direction
Data Source
AI summary
The present disclosure provides an outer blade block and an electric shaver configured to press an outer blade against a skin with a more appropriate pressing force. The electric shaver according to the present disclosure includes an outer blade and a load adjustment mechanism configured to adjust a load applied to the outer blade. The load adjustment mechanism includes a float mechanism that includes a biasing member that biases the outer blade toward one side in one direction, and a reception part that receives the biasing member, and floats an outer blade piece in one direction. The load adjustment mechanism includes a movable mechanism configured to move the reception part in one direction, and a sensor that detects a load applied to the outer blade. The load adjustment mechanism further includes a controller that controls a movement amount of the reception part in one direction based on the load applied to the outer blade detected by the sensor.