One-Handed Hair Cutting Device with Wireless Remote
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Solution Overview
Problem
Existing hair cutting devices are impractical for self-use, especially when trying to cut hair behind or on the sides of one's head, as they require both hands and are complicated by the need for mirrors, leading to disorientation.
Innovation Solution
A comb-like hair cutting device that integrates a comb with cutting edges, a hair guard, and a control unit that allows one-handed operation via a wireless remote control, enabling the device to switch between comb and clipper modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional scissors or clippers are used for self-haircutting, then the cutting function is provided, but the device requires two hands and mirrors making operation difficult and disorienting
Solution Approach 1:
The patent combines a comb and cutting device into a single integrated unit. The comb-like piece has teeth with cutting edges at the lower parts, merging the guiding function of a comb with the cutting function of clippers into one device that can be operated with a single hand, eliminating the need for separate mirrors and multiple hands
Solution Approach 2:
The hair cutting device performs multiple functions: it acts as a comb for guiding hair, a clipper for cutting hair, and includes a hair guard for safety. The wireless remote control adds additional control functions, making the device versatile and adaptable to different haircutting needs while maintaining ease of self-operation
2Ease of operation
If a comb and cutting device are integrated into one unit, then one-handed operation is enabled, but the device structure becomes more complex
Solution Approach 1:
The comb-like piece and cutting arm are merged into a single integrated unit with a unified structure. The comb-like piece has teeth that serve both as comb elements and cutting edges, while the moving cutting arm works in conjunction with these teeth. This integration enables one-handed operation while maintaining relatively simple construction through functional merging
3Productivity
If the sharp cutting edges are always exposed, then cutting efficiency is high, but the risk of cutting unintended hair or causing injury increases
Solution Approach 1:
The hair guard is designed to be movable rather than fixed, allowing it to dynamically adjust its position. It can be raised to expose cutting edges for efficient cutting or lowered to cover them for safety. This dynamic adjustment capability enables the user to control when cutting edges are active, balancing cutting efficiency with safety to prevent accidental cuts
Solution Approach 2:
The hair guard acts as an intermediary element between the user and the sharp cutting edges. It provides a safety barrier that can be positioned to prevent accidental contact with cutting edges while allowing intentional cutting when properly positioned. This intermediary component mediates between the need for sharp cutting edges and the need for safety
Data Source
AI summary
A hair cutting device adapted for cutting one's own hair comprises a comb piece having teeth with smooth comb edges near open ends and sharp cutting edges near closed ends, a moving cutting arm with sharp cutting teeth in contact and rough alignment with the sharp cutting edges of the comb piece, capable of reciprocating sideways back and forth and cutting hair in conjunction with the sharp cutting edges of the comb piece, and a hair guard in close proximity along their lengths. The hair guard can be lowered to expose the sharp cutting edges of the comb piece and moving cutting arm to cut hair or raised above the sharp cutting edges to work as a comb.