Shaver Head Guide Comb Teeth for Skin Protection and Hair Feeding
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Solution Overview
Problem
Existing shaver head assemblies cause skin damage due to sharp serrations and struggle with shaving soft, curly, or entangled hair, leading to inefficiencies and increased effort.
Innovation Solution
A shaver head assembly with guide comb teeth and angled structures that reduce skin contact, collect and direct hair into entry grooves for efficient cutting, and include an elastic reset mechanism to improve hair feeding and skin protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sharp serrations are used on the outer blade screen to improve cutting performance, then hair cutting efficiency is improved, but skin damage increases
Solution Approach 1:
The patent introduces guide comb teeth as an intermediary element between the blade screen and the skin. These guide comb teeth have rounded ends that contact the skin first, preventing the sharp serrations of the blade screen from directly contacting and damaging the skin, while still allowing effective hair cutting to occur.
2Manufacturing precision
If the shaver head assembly is pressed firmly on the skin to shave cleanly, then shaving completeness is improved, but skin damage increases
Solution Approach 1:
The guide comb teeth serve as a mediator that allows firm pressing for complete shaving while protecting the skin. The rounded ends of the guide comb teeth distribute the pressure and contact the skin first, preventing direct contact between the sharp blade serrations and the skin even under firm pressure.
Solution Approach 2:
The guide comb teeth perform a preliminary action by contacting the skin and guiding the hair before the blade screen reaches the skin. This preliminary contact prepares the path for the blades, ensuring clean shaving while maintaining skin protection throughout the pressing action.
3Adaptability or versatility
If hollow parts are provided in the blade screen to handle long hair, then long hair coping ability is improved, but device complexity increases
Solution Approach 1:
The patent divides the blade screen into multiple functional zones: the guide comb teeth section that contacts the skin, the hollow parts section that handles long hair, and the blade cutting section. This segmentation allows each part to perform its specific function optimally without requiring complete structural redesign.
4Device complexity
If the shaver head assembly structure is simplified, then device complexity is reduced, but skin protection capability decreases
Solution Approach 1:
The guide comb teeth perform multiple functions simultaneously: they protect the skin from direct blade contact, guide hair into the cutting area, and provide structural support for the blade screen. This multi-functionality allows effective skin protection without adding separate dedicated protection components.
Data Source
AI summary
A shaver head assembly includes a shaver screen provided with outer fixed blades along an edge, an annular wall, and a blade holder that are coaxially provided. An outer peripheral entry groove is formed between adjacent outer fixed blades. The blade holder has outer movable blades. The outer movable blades and the outer fixed blades cooperate to cut the hairs. An annular collecting groove is formed between the edges of the shaver screen and the annular wall at an end approaching skins. The shaver head assembly further includes guide comb teeth provided on a periphery of the annular wall; the guide comb teeth extend substantially along an axial direction of the shaver screen. Each guide comb tooth has a tooth body for combing and shunting the hairs; a shunt channel is formed between adjacent guide comb teeth.