Citrus Reamer and Dome Linkage for Even Pressure Juicing
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Solution Overview
Problem
Existing citrus juicers face issues with uneven contact pressure, difficulty in handling various citrus fruit sizes, and leakage during juice collection due to complex mechanical mechanisms in pivoting spouts.
Innovation Solution
A motorized citrus press with a pivoting arm and fruit dome that applies even pressure using a compound profile reamer and a sealing spout mechanism, ensuring efficient juicing of different fruit sizes and preventing leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple hinge connection is used for the inverted dome, then the device structure is simple, but the contact pressure between the citrus fruit and the reamer becomes uneven
Solution Approach 1:
The patent replaces the static simple hinge connection with a dynamic parallelogram linkage mechanism. This mechanism allows the dome to maintain a consistent angle relative to the reamer during rotation, ensuring uniform contact pressure across the fruit surface while still permitting the necessary motion for juicing operation.
2Shape
If the pivot point is moved far from the dome to achieve linear motion, then the dome travel becomes more linear, but the device structure becomes impractical
Solution Approach 1:
The parallelogram linkage mechanism provides a practical solution that achieves near-linear motion of the dome toward the reamer without requiring the pivot point to be positioned at an impractical distance. The linkage geometry naturally guides the dome along a controlled path that improves contact uniformity while maintaining compact device dimensions.
3Ease of operation
If manual pressure is applied directly to the dome, then the device is simple to operate, but persons with limited mobility, dexterity or strength find it difficult to use
Solution Approach 1:
The dome's curved, spherical design acts as a force amplifier. When users apply pressure to the dome surface, the curved geometry distributes and multiplies this force effectively across the fruit, providing significant mechanical advantage that reduces the effort needed compared to direct linear pressure application.
Solution Approach 2:
The parallelogram linkage mechanism converts the user's manual pressure into an amplified downward force on the fruit. The mechanical linkage provides leverage that multiplies the input force, making the device accessible to persons with limited strength or dexterity while maintaining simple operation.
4Device complexity
If a single reamer design is used, then the device structure is simple, but it cannot effectively juice a wide variety of citrus fruit types
Solution Approach 1:
The patent designs the reamer with a universal geometry that can effectively juice multiple citrus fruit types including limes, lemons, oranges, and grapefruits. The reamer features a central mound surrounded by radial slots and an optimized rib structure that adapts to different fruit sizes and textures, eliminating the need for interchangeable reamers while maintaining versatility.
5Ease of operation
If a pivoting spout mechanism is used, then the spout can be positioned for dispensing, but complex mechanical mechanisms are required causing leakage
Solution Approach 1:
The patent removes the complex pivoting mechanism entirely and replaces it with a simple, fixed spout structure. The spout is permanently positioned to allow juice to flow directly into a container, eliminating the mechanical complexity of pivoting mechanisms and the associated leakage problems while maintaining convenient dispensing functionality.
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 solution provides a safe, efficient, and versatile citrus juicing experience by ensuring even contact pressure across various fruit sizes and preventing juice leakage, making it easier to use for people with limited mobility and improving the mechanical advantage for juicing efficiency.
Implementation Method 1
Each primary rib has an upper profile and a lower profile that comprise a first compound profile
Implementation Method 2
Pressure between the fruit and reamer and relative rotation between the two results in the separation of the juice from the fruit
Data Source
AI summary
A motorized citrus press has a reamer and a pivoting arm that carries a fruit dome. The reamer has primary ribs that protrude from a rib supporting surface. Each primary rib has an upper profile and a lower profile that comprise a compound profile.