Electric grinder

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Solution Overview

Problem

Current electric grinders face issues with reduced material capacity and friction force during grinding due to the occupation of grinding components, leading to incomplete material processing.

Innovation Solution

An electric grinder design with a detachable upper and lower shell forming a closed chamber, a driving assembly, rotating assembly, and a disc-shaped grinding part with through holes, allowing for continuous material compaction and discharge, maintaining a large friction force throughout the grinding process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If grinding components run through the entire grinding space to ensure grinding contact, then grinding effectiveness is improved, but the amount of material that can be accommodated in the grinding space is reduced

Engineering Contradiction:

Improvegrinding effectivenessVSAvoidmaterial capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The grinding components are segmented into multiple sections (upper grinding component with grinding teeth and lower grinding component with grinding blades) that work in coordination. This segmentation allows the grinding action to be distributed throughout the grinding space without requiring a single continuous component, thereby increasing material capacity while maintaining grinding effectiveness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The grinding components are designed to operate in multiple dimensions - the upper grinding component rotates vertically while the lower grinding component rotates horizontally. This multi-dimensional grinding approach ensures comprehensive material contact without extending component length through the entire grinding space, thus accommodating more material.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If grinding components occupy space in the grinding chamber, then grinding contact is ensured, but the volume available for material is reduced

Engineering Contradiction:

Improvegrinding contactVSAvoidgrinding space volume

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

The upper grinding component is nested within the upper shell and the lower grinding component is nested within the lower shell, with both components operating within the same grinding space without extending beyond the chamber boundaries. This nested arrangement maximizes the utilization of grinding space volume while ensuring adequate grinding contact through coordinated rotation of both components.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Manufacturing precision

If material is ground to fine particles, then grinding thoroughness is improved, but the material becomes looser and friction force decreases

Engineering Contradiction:

Improvegrinding thoroughnessVSAvoidfriction force

Core Design Contradiction:

Manufacturing precisionVSForce

Solution Approach 1:

The dual rotation system ensures continuous grinding action throughout the entire grinding process. The upper grinding component rotates vertically while the lower grinding component rotates horizontally, creating continuous shearing and crushing actions that maintain high friction force even as material progresses from coarse to fine particles, ensuring thorough grinding without loss of effectiveness.

Inventive Principle:

Principle #20Continuity of useful action

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 design accommodates more material in a dense state, ensuring thorough grinding by maintaining a large friction force and efficient discharge, thus improving grinding efficiency.

Implementation Method 1

grinding is achieved through the frictional force generated by the relative motion between the grinding components and the material

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

the grinding part presses the material onto the lower grinding piece

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 3

the powdered material will fall down through the gap between the coarse materials, and will be discharged into the space between the lower grinding piece and the lower shell

Methodology Applied

Scientific EffectGravity: Gravitation

Data Source

PatentUS20250261796A1Electric grinder

Publication Date: 2025.08.21 WANG SONGZI

AI summary

An electric grinder includes an upper shell, a lower shell, a driving assembly, a rotating assembly, an upper grinding piece, and a lower grinding piece. The lower shell is detachably connected to the upper shell, the driving assembly is installed on the upper shell, the rotating assembly is installed on the driving assembly, the upper grinding piece is installed on the rotating assembly, and a grinding part is provided on the upper grinding piece. The lower grinding piece can be detachably connected to the second chamber, and there are multiple through holes on the lower grinding piece. Due to the fact that the driving assembly can drive the grinding part to move, the material in the grinding space can be compacted, so that the grinding part and the material can always maintain a relatively large frictional force during the relative movement process, thus fully grinding the material.