Asymmetrical Blade Grinder Design for Adjustable Grind Size Control

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Solution Overview

Problem

Herb grinders typically have simple blade designs that cannot adjust to finer or coarser grinds, limiting their versatility in processing different types of organic materials.

Innovation Solution

The design incorporates asymmetrical blades with varying point configurations on concentric arcs, allowing for adjustable grinding modes by changing the direction of rotation, enabling both finer and coarser grinds depending on the orientation of the blades' points and surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If simple blade designs are used in herb grinders, then the device complexity is reduced, but the adaptability for different grind sizes is limited

Engineering Contradiction:

Improveblade design complexityVSAvoidgrind size adjustment

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The blade design incorporates multiple points on asymmetrical arcs that can engage with corresponding points on opposing blades at different rotational positions. By rotating the blades to different orientations, users can select between finer and coarser grinds, making the static blade structure dynamically adjustable in function without adding mechanical complexity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The blades feature asymmetrical arc designs where points are positioned at different radial distances from the center. This asymmetry allows the blades to produce different grind sizes depending on their rotational orientation, enabling versatility while maintaining a simple overall blade structure without additional adjustment mechanisms

Inventive Principle:

Principle #4Asymmetry

2Manufacturing precision

If fixed blade configurations are used, then the manufacturing precision requirements are reduced, but the versatility for different applications is limited

Engineering Contradiction:

Improveblade configuration precisionVSAvoidapplication range

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The blade design with multiple points on asymmetrical arcs allows a single blade configuration to perform multiple grinding functions. By simply rotating the blades to different orientations, the same blade pair can produce both fine and coarse grinds, making the grinder universally applicable for different herbs and cooking needs without requiring precision-machined adjustable mechanisms

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If asymmetrical blades with varying point configurations are used, then the adaptability for different grind sizes is improved, but the device complexity increases

Engineering Contradiction:

Improvegrind size adjustmentVSAvoidblade design complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The asymmetrical blades with multiple points create a dynamically adjustable grinding system where the effective blade configuration changes with rotation. This allows fine and coarse grinds to be achieved through simple rotational positioning rather than complex mechanical adjustments, maintaining device simplicity while enhancing adaptability

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11207695B2Herb grinder and blades for herb grinder

Publication Date: 2021.12.28 SUPERIOR PRECISION ENG LLC DBA SPE MACHINING

AI summary

A grinder has a bottom with a first row of first asymmetrical blades extending from the bottom. A top of the grinder has a second row of second asymmetrical blades extending from the top. The first asymmetrical blades and second asymmetrical blades are triangle shaped. A first side of each blade has one point, and a second side of each blade has two points.