Juice extractor
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Solution Overview
Problem
Conventional juice extractors face issues with gear abrasion and damage, complex assembly, cleanliness, and inefficient draff discharge due to gear engagement structures, particularly when handling fibrous materials.
Innovation Solution
A juice extractor design featuring a simplified rotational power transmission structure where the rotary brush is directly coupled to the feed screw via engagement parts, eliminating the need for intermediate gears and incorporating a draff discharge guide recess and cutting mechanism to facilitate smooth draff discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gear engagement structure is used to rotate the rotary brush, then the rotary brush can be rotated effectively, but the device complexity increases and reliability decreases due to gear abrasion and damage
Solution Approach 1:
The patent removes the gear engagement structure entirely from the system. Instead of using gears to transmit rotational motion to the rotary brush, the invention directly couples the feed screw to the rotary brush through engagement parts (retaining slots and engagement protrusions), thereby eliminating the intermediate gear components that caused complexity and reliability issues
Solution Approach 2:
The patent merges the functions of the feed screw and rotary brush by directly coupling them through engagement parts. The feed screw's rotation is directly transmitted to the rotary brush without intermediate gear mechanisms, combining what were previously separate functional elements into a more integrated system
2Ease of manufacture
If a gear engagement structure is used, then rotational power transmission is achieved, but ease of manufacture deteriorates due to precise engagement requirements
Solution Approach 1:
The patent extracts the complex gear engagement structure and replaces it with a simpler direct coupling mechanism using retaining slots and engagement protrusions, significantly reducing assembly difficulty and manufacturing precision requirements
Solution Approach 2:
The engagement mechanism is segmented into discrete, easily manufactured components: retaining slots formed on the feed screw and corresponding engagement protrusions on the rotary brush. This segmentation allows for independent manufacturing and simplifies the assembly process
3Object-affected harmful factors
If a gear structure is used for power transmission, then the rotary brush rotates, but cleanliness deteriorates due to food accumulation in gear teeth gaps
Solution Approach 1:
The patent removes the gear structure that created cleanliness problems. By eliminating the gear teeth and their interlocking gaps, the invention prevents food and draff accumulation in hard-to-reach areas, making the device easier to clean and maintain hygiene
Solution Approach 2:
Instead of using a complex gear structure that traps food, the invention inverts the approach by using a simple direct coupling mechanism with open geometry that allows easy access for cleaning and prevents food entrapment
4Productivity
If a conventional draff discharge hole structure is used, then draff can be discharged, but productivity decreases due to bottlenecks with fibrous materials
Solution Approach 1:
The patent adds a vertical dimension to the draff discharge system by incorporating a downwardly inclined discharge surface and extending the discharge hole vertically. This dimensional change allows fibrous materials to be pushed downward and discharged more efficiently, preventing bottlenecks that occur with horizontal discharge structures
Solution Approach 2:
The rotary brush's rotation dynamically pushes and guides draff toward the discharge hole. The continuous rotational motion creates a dynamic discharge mechanism that prevents clogging by constantly moving fibrous materials along the inclined discharge surface
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
This design reduces the failure rate, simplifies assembly, enhances cleanliness, and improves draff discharge efficiency, allowing for continuous operation without gear-related issues and maintaining hygiene.
Implementation Method 1
a feed screw (200) connected with the drive shaft of the main body so as to be rotatably mounted on the main body and disposed inside the mesh drum, the feed screw including one or more screw spirals formed on an outer surface thereof
Implementation Method 2
a rotary brush (400) mounted between an inner wall surface of the housing and an outer wall surface of the mesh drum... including at least one brush configured to continuously sweep at least one of the inner wall surface of the housing and the outer wall surface of the mesh drum while being rotated
Data Source
AI summary
The present invention relates to a juice extractor. The juice extractor of the present invention includes: a main body; a housing; a cover; a rotary brush mounted between an inner wall surface of the housing and an outer wall surface of the mesh drum, the rotary brush including at least one brush; and a feed screw connected with the drive shaft of the main body and disposed inside the mesh drum, wherein the feed screw includes a plurality of retaining slots formed on a lower circumferential bottom surface thereof and the rotary brush includes a plurality of engagement parts formed on an inner circumferential surface of a lower end portion thereof, so that the engagement parts of the rotary brush are engaged with the retaining slots of the feed screw to cause the rotary brush to be rotated together with the rotation of the feed screw.