Adjustable Clipper Guard Assembly for Fast Length Changes
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Solution Overview
Problem
Existing hair clippers require frequent detachment and reattachment of clipper guards to adjust the cutting length, which is inconvenient for stylists.
Innovation Solution
An adjustable clipper blade assembly with a stationary blade and a guard attachment featuring a double acting spring lever and track system allows incremental adjustment of the guard attachment relative to the stationary blade, enabling seamless changes in cutting length without detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple clipper guards are used to achieve different cutting lengths, then the versatility of cutting styles is improved, but the time required to detach and reattach guards increases
Solution Approach 1:
The patent combines multiple guard positions into a single attachable guard by incorporating a lever mechanism with multiple engagement positions. Instead of using separate guards for different cutting lengths, the single guard can be positioned at different heights relative to the blade using the lever's multiple stops, thereby reducing the number of attachments needed while maintaining cutting style versatility
Solution Approach 2:
The patent introduces a dynamic adjustment mechanism where the guard can be quickly repositioned between multiple fixed heights using a lever system. This dynamic positioning allows the guard to transition between different cutting lengths without detachment, resolving the contradiction between versatility and time consumption
2Device complexity
If a single guard attachment is used, then the device complexity is reduced, but the ability to achieve multiple cutting lengths is limited
Solution Approach 1:
The patent adds a lever mechanism with multiple engagement positions to the single guard attachment. This dynamic element allows one guard to achieve multiple cutting lengths by positioning the lever at different stops, thereby maintaining simplicity while enhancing versatility
Solution Approach 2:
The single guard attachment is designed to perform multiple functions by incorporating a lever that can engage at different positions. This multi-functional design allows one component to replace what would traditionally require multiple separate guards, reducing overall system complexity while maintaining adaptability
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
The solution minimizes the need for frequent guard changes, providing convenient and efficient adjustment of cutting length during hair cutting.
Implementation Method 1
The double acting spring lever is pivotally attached to the front face of the stationary blade near the center of the bottom edge of the stationary blade using a double acting spring hinge
Data Source
AI summary
An adjustable hair clipper blade assembly is provided for attachment to hair clippers. The adjustable hair clipper blade assembly includes a stationary blade assembly and a guard attachment. The stationary blade assembly includes a stationary blade having a lever mounted on the front of the stationary blade for interfacing with the rear side of a guard attachment that is moveably secured against the stationary blade. The lever moves the guard attachment in a first direction when the lever is moved in a first direction and moves the guard attachment in a second direction with the lever is moved in a second direction.