Pivotable Shaving Head Frame for Skin Contour Adaptation
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Solution Overview
Problem
Existing hair cutting devices struggle to adapt effectively to the skin surface, leading to discomfort and inefficiency in shaving, particularly when dealing with varying hair lengths and skin contours.
Innovation Solution
The shaving head frame is mounted pivotably on a central bearing, allowing for both upward and downward movement, as well as rotational adjustment, enabling the cutting device to better follow the skin surface and improve shaving comfort and efficiency by allowing for oblique positioning and combined use of short and long hair cutting systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the cutting device is fixed rigidly on the bearer element, then the structural stability is improved, but the ability to adapt to uneven skin surface deteriorates
Solution Approach 1:
The cutting device is mounted on a pivotable bearing that allows dynamic adjustment of the shaving head frame angle. The bearing includes play (clearance) that enables the frame to pivot in clockwise or counterclockwise directions, transforming the rigid structure into a dynamic one that can adapt to skin contours while maintaining structural integrity through the bearing mechanism.
2Ease of operation
If the cutting device is made movable to follow skin contours, then the shaving comfort is improved, but the pressure control deteriorates
Solution Approach 1:
A spring element is introduced between the cutting device and the bearer element to provide beforehand cushioning. The spring absorbs excess pressure forces that occur when the cutting device contacts the skin, preventing the device from escaping downward against the skin surface. This cushioning mechanism maintains shaving comfort while controlling pressure within safe limits.
3Adaptability or versatility
If the comb front is made laterally movable, then the adaptability to skin surface is improved, but the structural complexity increases
Solution Approach 1:
The shaving head frame is mounted pivotably on the bearer element via a central bearing with play, enabling the entire frame to pivot as a unified structure. This dynamic mounting allows the comb front to follow skin contours through frame pivoting rather than requiring complex lateral movement mechanisms for each comb element, thus achieving adaptability with reduced structural complexity.
Data Source
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AI summary
The present invention relates to an electrically operated hair cutting device (1) having a short hair cutting system (3) fashioned on a front end of a housing (2) and having a bearer part (8), attached to the front or rear side of the housing (2), that accepts at least one additional cutting device (9, 10). The cutting device (9, 10) is made up of at least two cutting elements (30, 31; 36, 37) that slide relative to one another via a drive motor (47), the cutting elements of the additional cutting device (9) being fashioned in a shaving head frame (44). The shaving head frame (44), with the cutting elements (30, 31), is mounted in the bearer part (8) against the force of a spring system (79). In addition, the shaving head frame (44) is guided upward and downward in the bearer part (8) via guide elements (72). According to the present invention, the shaving head frame (44) is pivotably mounted on the bearer part (8) via a central bearing (74, 75). In this way, a shave is ensured that is particularly gentle to the skin.