Direct-Drive Juicer Screw and Rotary Brush for Easy Cleaning
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Solution Overview
Problem
Conventional home juicers face issues with high failure rates due to gear breakage or abrasion, complex assembly requirements, and difficulty in maintaining cleanliness and residue removal, especially with viscous juices.
Innovation Solution
A juicer design that eliminates the complicated geared rotating power transmission structure by directly rotating a rotary brush with a feed screw, featuring a simple construction with spiral blades and locking mechanisms for easy assembly and cleaning, and a residue discharge system that prevents contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complicated gear mechanism is used to rotate the rotary brush, then the rotary brush can be rotated, but the failure rate increases due to gear breakage or abrasion
Solution Approach 1:
The patent removes the intermediate gear from the transmission system, extracting the problematic component that caused breakage and abrasion. The feed screw directly drives the rotary brush through a simplified connection, eliminating the gear mechanism that was responsible for high failure rates while maintaining the essential rotational function.
Solution Approach 2:
The patent segments the transmission function by separating the feed screw rotation from the rotary brush rotation through a direct mechanical connection. This segmentation eliminates the need for gear engagement and allows independent optimization of each component, reducing overall system complexity and failure points.
2Ease of operation
If three kinds of gears are assembled to rotate simultaneously, then the rotary brush can be rotated, but the assembly becomes difficult
Solution Approach 1:
The patent extracts the intermediate gear from the assembly, reducing three gear components to a single direct connection between the feed screw and rotary brush. This dramatically simplifies the assembly process by eliminating the need to precisely align and assemble multiple rotating gears simultaneously.
Solution Approach 2:
The patent merges the rotational motion transmission from the feed screw directly to the rotary brush through a simplified mechanical coupling. This combining of functions eliminates the need for separate gear assemblies and reduces the number of assembly steps required.
3Ease of manufacture
If gears are installed in the juicer, then the rotary brush can be rotated, but it becomes difficult to wash out dirt from gaps between teeth
Solution Approach 1:
The patent removes all gear components from the juicer structure, eliminating the complex toothed gaps that trap dirt and residue. The simplified direct-drive mechanism has smooth surfaces that are easily accessible for cleaning, allowing users to wash out dirt without disassembly.
Solution Approach 2:
Instead of using interlocking gear teeth to transmit rotation, the patent inverts the approach by using a direct mechanical connection with smooth surfaces. This inversion eliminates the crevices and gaps between gear teeth where dirt accumulates, making the structure inherently easier to clean.
4Ease of manufacture
If an intermediate gear is fixed to the bottom of the housing, then the gear mechanism functions, but the residue held in gaps cannot be removed
Solution Approach 1:
The patent extracts the intermediate gear that was fixed to the housing bottom, removing the source of the cleaning problem. Without this gear, there are no gaps or teeth structures for residue to accumulate in, allowing complete cleaning of the housing interior.
Solution Approach 2:
The patent segments the housing interior from any fixed mechanical components, creating a smooth, continuous surface that can be completely cleaned. By removing the intermediate gear, the housing becomes a simple cavity without internal structures that would trap residue.
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 reduces the failure rate, simplifies assembly and cleaning, and effectively discharges residue, improving juice quality by eliminating the need for a pressurized discharge path and allowing easy handling of viscous juices.
Implementation Method 1
a feed screw having a drive shaft hole in a lower part thereof so as to receive the drive shaft of the main body through the drive shaft hole, the feed screw being rotatably installed on the main body at a location inside the strainer
Data Source
AI summary
The present invention relates to a juicer comprising a screw is arranged inside a net drum, and a rotary brush placed between an inner wall of a housing and an outer wall of the net drum, wherein a screw coupling protrusion or a screw coupling groove is formed on the upper part of the screw and a rotary brush coupling groove or a rotary brush coupling protrusion is formed on the upper part of the rotary brush such that the screw coupling protrusion and the rotary brush coupling groove are coupled or the screw coupling groove and the rotary brush coupling protrusion are coupled in such a manner that the rotary brush is directly rotated by the screw.