Pivoting Hair Trimmer Blade Adjuster for Multi-Model Clearance
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Solution Overview
Problem
Existing hair trimmers require separate adjusters for different blade models, making it difficult to adjust the clearance between the reciprocating cutter and static comb blades, which affects shaving quality and safety.
Innovation Solution
An adjusting device with a base, adjuster, locator, and biasing means that allows for adjusting the clearance between the cutter and comb blades, accommodating various blade models from different manufacturers, using a pivotable adjuster and locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate adjusters are provided for different blade models, then each blade model can be adjusted precisely, but the device complexity and the number of adjusters required increases
Solution Approach 1:
The adjusting device is designed with a universal base that can accommodate multiple blade models from different manufacturers. The base includes a receiving surface configured to receive various comb blades, and the adjuster mechanism can adjust different cutter blades relative to their respective comb blades using the same adjusting device, eliminating the need for multiple model-specific adjusters
Solution Approach 2:
The adjuster is designed to be rotatable about an axis, allowing dynamic adjustment of the cutter blade position. The rotatable adjuster with its curved profile enables continuous variation of the clearance distance, providing precise adjustment capability while maintaining a single universal device structure
2Device complexity
If a universal adjuster is designed to accommodate different blade models, then the device complexity is reduced, but the manufacturing precision required to maintain consistent adjustment quality across models increases
Solution Approach 1:
The adjuster features a curved profile with specific geometric characteristics designed to interact with different blade types. The curved profile includes a first radial distance and a second radial distance from the rotation axis, creating localized contact points that ensure consistent adjustment geometry across different blade models. The locator mechanism also provides localized positioning of the comb blade on the base
Solution Approach 2:
The adjusting device allows continuous change of the clearance parameter by rotating the adjuster. The curved profile of the adjuster translates rotational motion into linear displacement of the cutter blade, enabling precise control of the clearance distance. The biasing means also provides a controllable force parameter to maintain consistent contact between components
3Ease of operation
If the adjuster is made rotatable with a curved profile, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The adjuster incorporates a curved profile instead of a straight edge, allowing the adjuster to be rotated about an axis to achieve adjustment. The curved surface geometry converts simple rotational motion into the desired linear adjustment of the cutter blade position, making the device easier to operate while the rotation axis provides structural simplification
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
Enables precise adjustment of the clearance between the blades, ensuring consistent shaving quality and safety across diverse trimmer models without the need for multiple adjusters.
Implementation Method 1
The biasing means is operable to bias the static comb against the comb-contacting face of the adjuster via the locator
Implementation Method 2
The adjuster is pivotably connected to the base so that the rotation axis is parallel with the transversal axis of the base. The cutter-adjusting face is operable to displace the cutter blade with respect to the comb blade by pivoting the adjuster around the rotation axis
Data Source
AI summary
An adjusting device for adjusting a blade of a hair trimmer where the blade of the hair trimmer has a dynamic cutter blade and a static comb blade. The adjusting device comprises a base, an adjuster pivotably connected to the base, a locator for locating the blade and a biasing means for biasing the blade against the adjuster. The adjuster has a comb-contacting face at a first radial distance from its rotation axis while a cutter-adjusting face is at a second radial distance from the rotation axis, the second radial distance being larger than the first radial distance. By rotating the adjuster, a clearance is created between the cutter blade and the comb blade.