Beard Trimmer Cutting Unit Suspension for Uniform Skin Pressure
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Solution Overview
Problem
Existing beard trimmers are bulky, difficult to handle, prone to clogging, and provide uneven cuts due to varying skin pressure during use, leading to discomfort and skin friction.
Innovation Solution
A beard trimmer with a motorized cutting unit suspended inside a handle via an elastic means, such as a spring, allowing for uniform pressure distribution and ergonomic design, with all moving parts contained within the handle to prevent bulkiness and ease of cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a suspension system with external moving parts is used to cushion pressure on the skin, then cutting comfort is improved, but the trimmer becomes bulky and difficult to handle
Solution Approach 1:
The movable unit is nested inside the handle, with the cutting unit housed within a movable unit that slides inside the handle. This nested arrangement allows the suspension system components to be contained within the handle volume, avoiding external protruding parts while maintaining the pressure-cushioning function.
Solution Approach 2:
The cutting unit is made dynamically movable relative to the handle through the sliding movable unit, allowing it to adjust its position to cushion pressure on the skin. The elastic means provides dynamic response to pressure changes, enabling the system to adapt to varying skin contours without adding permanent bulk.
2Ease of operation
If external moving parts are arranged for pressure transmission to the motor, then cutting sensation is improved, but the trimmer becomes difficult to clean and maintain
Solution Approach 1:
The elastic means is extracted and positioned at the rear of the movable unit, separate from the cutting head area. This separation allows the cutting head to be easily removed and cleaned without dealing with complex suspension mechanisms, while the elastic means remains contained within the handle where it doesn't interfere with cleaning operations.
Solution Approach 2:
The trimmer is segmented into distinct functional modules: the removable cutting head, the movable unit containing the motor, and the elastic means at the rear. This segmentation allows the cutting head to be independently removed for cleaning, while the suspension system components remain enclosed in the handle, simplifying maintenance.
3Ease of operation
If the cutting unit is made compact to follow facial curves, then maneuverability is improved, but pressure distribution on the skin becomes uneven
Solution Approach 1:
The movable unit allows the cutting unit to dynamically adjust its position and orientation as it follows facial curves. The elastic means provides continuous pressure regulation, compensating for uneven pressure distribution that occurs when maneuvering a compact trimmer on curved surfaces, thereby maintaining consistent cutting quality.
Solution Approach 2:
The elastic means is positioned to provide beforehand cushioning by absorbing pressure variations before they reach the skin. This pre-cushioning effect ensures uniform pressure distribution even when the compact cutting unit encounters varying facial contours, preventing both excessive pressure and gaps in cutting.
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 suspension system provides a comfortable, uniform cut with reduced skin friction and improved maneuverability, ensuring a better cutting experience by compensating for varying facial curves and pressures.
Implementation Method 1
an elastic means positioned behind the mobile unit in order to cushion the pressure of the motorized cutting unit on the skin and to create a restoring force allowing the mobile unit to return to its equilibrium position
Data Source
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AI summary
The present invention relates to a motorised beard trimmer (1) with suspension of the cutting unit, comprising: - a handle (2); - a motorised cutting unit (3) comprising a cutting head (5) and a motor (4); the motorised cutting unit is attached to a cylindrical movable unit (6) that slides in a complementary cylindrical shape located inside the handle or forming the handle - and a resilient means (8) is positioned behind the movable unit to damp the pressure of the motorised cutting unit on the skin during use and to create a return force allowing the movable unit to return to its equilibrium position after having released the pressure of the motorised cutting unit on the skin.