Rounded Comb Tine Tips Prevent Blade Interference
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Solution Overview
Problem
Existing comb attachments for hair clippers with pointed free ends can become damaged during installation and removal due to interference with the upper blade's cutting edge, especially when the upper blade is reciprocating.
Innovation Solution
A comb attachment with tines featuring rounded free ends that describe a radius of curvature, allowing the comb to pivot about the lower cutting edge without crossing the upper cutting edge, and an attachment mechanism that includes a magnet for secure engagement with the lower blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the comb attachment has pointed free ends on the tines, then the comb can be manufactured with simpler geometry, but the free ends will intersect with the upper blade's cutting edge during installation and removal, causing damage
Solution Approach 1:
The free ends of the comb attachment tines are rounded instead of pointed. This curvature modification allows the tines to clear the upper blade's cutting edge during installation and removal operations, preventing damage while maintaining manufacturing feasibility through standard forming processes
2Device complexity
If the comb attachment pivots about the lower cutting edge during installation and removal, then the attachment mechanism is simplified, but the rounded free ends must be sized precisely to avoid crossing the upper cutting edge
Solution Approach 1:
The radius of curvature of the rounded free ends is specifically sized to be less than the distance from the lower cutting edge to the upper cutting edge. This parameter optimization allows the comb attachment to pivot about the lower cutting edge during installation and removal while ensuring the free ends do not cross the upper cutting edge, balancing mechanism simplicity with precise dimensional control
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 damage to the comb attachment's free ends during installation and removal by ensuring they do not intersect with the upper blade's cutting edge, enhancing durability and ease of use.
Implementation Method 1
the attachment mechanism includes a magnet carried by the body, and engageable with the lower blade through a magnetic attraction
Data Source
AI summary
A comb attachment for use on a hair clipper includes tines that have rounded free ends positioned rearward of the cutting edge of a lower blade and forward of the cutting edge of the upper blade. Because of a radius of curvature of the rounded free ends, the free ends do not cross the cutting edge of the upper blade during attachment and removal of the comb attachment.