Double-Sided Comb With Asymmetric Slots for Hair-Cutting Devices
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Solution Overview
Problem
Existing hair-cutting devices require multiple combs for different cutting lengths, leading to clutter and instability issues with adjustable combs, which often result in unintentional changes to the cutting length.
Innovation Solution
A double-sided comb with asymmetric design and slots positioned at different distances from a common edge, allowing manual adjustment of cutting length by flipping between two attachment positions, reducing the need for multiple accessories and enhancing mechanical stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple combs are provided for different cutting lengths, then various cutting lengths can be achieved, but the number of accessories increases leading to clutter
Solution Approach 1:
The patent combines two combs with different cutting lengths into a single double-sided comb attachment. One side of the comb provides a first cutting length while the other side provides a second cutting length, eliminating the need for multiple separate comb accessories and reducing clutter.
Solution Approach 2:
The single comb attachment serves multiple functions by providing two different cutting lengths on its two sides. This multi-functional design allows the user to achieve various cutting lengths without needing multiple specialized accessories.
2Device complexity
If adjustable combs are used to reduce the number of accessories, then the number of add-on elements is reduced, but mechanical stability decreases and unintentional changing of cutting length occurs
Solution Approach 1:
Instead of using a complex adjustable mechanism, the patent combines two fixed-comb designs into a single double-sided attachment. This approach maintains the mechanical simplicity and stability of fixed combs while eliminating the need for multiple separate accessories.
Solution Approach 2:
Rather than making a single comb adjustable (which compromises stability), the patent inverts the approach by making the attachment itself double-sided with two fixed configurations. The user selects the desired cutting length by attaching the comb in one of two orientations, preserving mechanical stability while achieving versatility.
3Device complexity
If a single comb is used for all cutting lengths, then the number of accessories is reduced, but the ability to provide distinct cutting lengths is compromised
Solution Approach 1:
The patent merges two distinct comb designs with different cutting lengths into a single double-sided attachment. Each side of the comb is specifically designed to provide a distinct cutting length, ensuring that the user can achieve well-differentiated cutting lengths without needing multiple separate accessories.
Data Source
AI summary
The invention relates to a comb (100) for being attached to a hair-cutting device (115). The comb includes two surfaces (103, 104) to be in contact with the skin of the user. Each surface includes a slot (105, 106) for attaching the comb to the hair-cutting device, and both surfaces have a common edge (107). When the hair-cutting device is attached to the slot of the first surface, the second surface is in contact with the skin, and when the hair-cutting device is attached to the slot of the second surface, the first surface is in contact with the skin. An asymmetric arrangement of the two slots allows for two cutting lengths of hair with one double-sided comb.