Electric Shaver Blade Angle Adjustment for Facial Contours
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric shavers with both rotary-type and reciprocating-type blade units fail to achieve uniform deep shaving on complex facial areas, leading to unshaven long or curled hairs, particularly under the chin and nose.
Innovation Solution
An electric shaver design incorporating a rotary-type blade unit with a movable and inclinable outer blade, and a reciprocating-type blade unit with upward and downward movement, allowing for improved close contact with complex facial areas, using flexible arms to transmit motor force and adjust blade positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both rotary-type and reciprocating-type blade units are simply included, then the shaver can handle various hair types, but unshaven areas appear in long or curled hairs on complex facial shapes
Solution Approach 1:
The rotary-type blade unit is configured to be inclinable relative to the reciprocating-type blade unit, allowing dynamic adjustment of the blade angle to adapt to complex facial contours. This enables the blades to maintain optimal contact with the skin surface on areas like the chin periphery and under the nose, ensuring complete shaving of long and curled hairs while preserving the complementary functions of both blade types.
2Device complexity
If the blade unit is fixed in position, then the structure is simple, but the outer blade cannot maintain close contact with complex facial areas
Solution Approach 1:
The rotary-type blade unit is designed with an inclinable mechanism that allows it to adjust its angle relative to the reciprocating-type blade unit. This dynamic configuration enables the outer blade to adapt to complex facial contours and maintain close contact with areas such as the chin periphery and under the nose, significantly improving shaving effectiveness without requiring complex mechanical structures.
3Ease of manufacture
If the rotary-type blade unit is fixed parallel to the reciprocating-type blade unit, then manufacturing is simple, but uniform deep shaving cannot be achieved on entire facial surfaces
Solution Approach 1:
The rotary-type blade unit is configured to be inclinable relative to the reciprocating-type blade unit, allowing the outer blade to adjust its angle to match complex facial surfaces. This enables uniform deep shaving across entire facial surfaces including difficult-to-reach areas, while the inclinable mechanism maintains manufacturing simplicity through a straightforward angular adjustment design.
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
Prevents unshaven long or curled hairs and achieves uniform deep shaving on entire facial surfaces, including under the chin and nose, by enhancing the close contact property of the blades.
Implementation Method 1
a first inner blade rotating while coming into sliding contact with an inner surface of the first outer blade
Implementation Method 2
a second inner blade reciprocating while coming into sliding contact with an inner surface of the second outer blade
Data Source
AI summary
An electric shaver includes a main body including a rotary-type blade unit having a first outer blade and a first inner blade rotating while coming into sliding contact with the inner surface, a reciprocating-type blade unit having a curved arc-shaped second outer blade and a second inner blade reciprocating while coming into sliding contact with the inner surface, and a motor. The reciprocating-type blade unit is provided in the main body such that the second outer blade is movable upward and downward. In the rotary-type blade unit, an upper surface of the first outer blade is inclinable to a position parallel to tangent planes in contact with a farthest portion from the second outer blade on the upper surface and an upper surface of the second outer blade.