Telescopic Blender Stem for Deeper Cutting and Less Suction
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Solution Overview
Problem
Conventional hand blenders have limited processing space due to fixed blade positions, leading to inefficient comminution of food, especially with solid foods, and often adhere to container bottoms due to suction, requiring excessive force to dislodge, which increases processing time and results in inferior quality.
Innovation Solution
A telescopically movable stem design allows axial adjustment of the working part relative to the shield, enabling deeper penetration into the container and reducing suction, combined with a radially extending cutter featuring a milling rib for enhanced cutting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the blade is fixedly mounted on a shaft in a radially and axially rigid manner, then the structural stability is improved, but the processing space that can be reached by the cutter is limited
Solution Approach 1:
The patent applies the dynamics principle by making the bell axially movable relative to the shaft, transforming the previously rigid fixed mounting into a dynamic adjustable system. The bell can now move axially along the shaft to adjust the cutter's position, enabling the cutter to reach different processing spaces while maintaining structural stability through the guided movement mechanism.
2Productivity
If the cutter is positioned close to the container bottom for effective comminution, then the cutting performance is improved, but the stem adheres to the bottom due to suction requiring excessive force to dislodge
Solution Approach 1:
The patent applies dynamics by enabling axial movement of the bell relative to the shaft, allowing the cutter to dynamically adjust its position. The bell can move axially to optimize cutting performance by reaching close to the container bottom when needed, while the telescopic mechanism allows easy dislodgement by simply extending the stem, eliminating the suction adhesion problem.
3Object-affected harmful factors
If the bell is dimensioned to completely enclose the cutter and protrude beyond the end of the shaft, then the protective function is improved, but the processing space below the cutter is not reached
Solution Approach 1:
The patent resolves this contradiction by making the bell axially movable along the shaft. The bell maintains its protective enclosure of the cutter while gaining the ability to move axially to extend the processing space below the cutter. This dynamic adjustment allows the bell to optimize both protection and processing capability depending on the operational requirements.
4Productivity
If the cutter geometry is optimized for cutting function, then the cutting efficiency is improved, but the propeller effect causes the entire stem to adhere to the bottom
Solution Approach 1:
The patent applies the extraction principle by separating the cutting function from the stem assembly. The optimized cutter geometry remains on the shaft for efficient cutting, while the bell is extracted as a separate axially movable component that can be positioned to counterbalance or disconnect the suction effect from the main stem, allowing the cutter to maintain its efficient geometry without causing stem adhesion.
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 extends the processing space, reduces suction and splashing, and improves cutting efficiency by allowing deeper penetration and easier handling of solid foods, resulting in higher quality processing and reduced operational force.
Implementation Method 1
The inner assembly is displaceable in an axial direction relative to the outer assembly by way of friction-free bearing elements
Implementation Method 2
friction-free bearing elements for axially displaceable support of the inner assembly in the outer assembly
Data Source
AI summary
An implement for stirring or comminuting, containing a drive motor arranged in a motor housing, a stem, in which a shaft connected to the drive motor in a rotationally rigid manner is mounted, and which is divided into an inner and an outer assembly, wherein the outer assembly has a shield at an end remote from the motor housing, and a working part surrounded by the shield, wherein the shaft is guided in an axially immovable manner in the inner assembly and the inner assembly is axially movable relative to the outer assembly. The working part is fixedly connected to the stem and is mounted in an axially immovable manner in the inner assembly, such that the working part can move in relation to the shield.