Cord-Pull Disk Grater for Stable High-Torque Manual Cutting
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Solution Overview
Problem
Manually operated disk graters with crank drives face limitations in torque and revolutions, leading to poor performance with hard or fibrous cutting goods, as they require simultaneous manual operation and handling, making it difficult to apply sufficient force without slippage or tilting.
Innovation Solution
The apparatus features a cord-pull drive with a holding-operating element and stabilizing means, including a duct for secure one-handed operation, a locking mechanism to prevent accidental activation, and a drive wheel with toothing to ensure stable rotational movement of the cutting disk, enhancing the application of compressive and tensile forces for effective cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a crank drive is used for manual operation, then the apparatus can be operated manually, but the cutting disk can only be driven with low torque and significantly fewer revolutions
Solution Approach 1:
The patent replaces the traditional crank drive mechanism with a cord-pull drive system. The cord-pull drive uses a spool that winds the cord during operation, providing a more efficient mechanical advantage. This substitution allows for higher torque transmission to the cutting disk while maintaining manual operability, directly resolving the contradiction between ease of manual operation and sufficient cutting power.
2Ease of operation
If simultaneous manual operation of cord-pull drive with one hand, then the apparatus must be held with the other hand, but this makes it difficult to apply sufficient compressive force without slippage or tilting
Solution Approach 1:
The patent segments the operational functions by introducing a stabilizing means (such as a stabilizing bar or support structure) that allows one hand to operate the cord-pull drive while the other hand feeds the material. The stabilizing means provides a counterbalance or support point that enables the operator to apply sufficient compressive force with the feeding hand without causing the apparatus to slip or tilt, thus resolving the contradiction between one-handed operation and sufficient force application.
3Ease of operation
If the apparatus is held with one hand while operating cord-pull drive with the other, then operation is possible, but slippage and tilting occur
Solution Approach 1:
The patent introduces a stabilizing means as an intermediary element between the operator and the apparatus. This stabilizing means (such as a stabilizing bar with handholds or a support structure) acts as a mediator that distributes the forces applied during operation, preventing the apparatus from slipping or tilting. It provides additional contact points that enhance stability while maintaining ease of manual operation, resolving the contradiction between operational ease and apparatus stability.
4Productivity
If hard or fibrous cutting goods are processed with low torque, then the apparatus can operate, but the cutting goods are either entrained by the blades and not cut, or blocking and squashing occurs
Solution Approach 1:
The patent replaces the inadequate crank drive with a cord-pull drive system that provides superior torque multiplication. The spool mechanism of the cord-pull drive creates a larger mechanical advantage, enabling the cutting disk to rotate with sufficient torque to effectively cut hard or fibrous materials. This substitution eliminates the problems of material entrapment without cutting and blocking/squashing, directly improving cutting performance while maintaining the ability to process difficult materials.
Data Source
AI summary
The invention relates to a device for processing foodstuffs, including an upper part, a drive and a lower part and a working unit that can be driven and set rotating by means of the drive, the drive being a manually cord-operated drive and the device having a holding-operating element on the upper part. The upper part of the device has an opening and is designed to feed the foodstuff to be processed to the working unit and to hold the device in position.