Overload Clutch in Belt-Driven Linear Actuator for Steam Probe Safety
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Solution Overview
Problem
Existing food preparation apparatuses lack secure and simple drive mechanisms that can limit torque to prevent injuries and facilitate efficient horizontal and vertical displacement of steam-feeding units and vessel supports.
Innovation Solution
Integration of a ratcheting clutch as an overload clutch within the drive train, utilizing a toothed belt drive system powered by an electric motor, which includes a plastic spring element to limit torque and prevent injuries by interrupting torque transmission upon overload, allowing for safe and efficient displacement of steam-feeding units and vessel supports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a belt drive is used to displace the carriage, then the construction is simpler and back-and-forth movements are faster, but the risk of injury increases due to unlimited torque transmission
Solution Approach 1:
An overload clutch is introduced as an intermediary component between the electric motor and the belt drive. This clutch acts as a safety mediator that limits the maximum transmittable drive torque, preventing injury when the carriage movement path is blocked, while maintaining the simplicity and speed advantages of the belt drive system.
2Object-affected harmful factors
If a spindle drive is used, then torque is controlled, but the construction is more complex and movements are slower
Solution Approach 1:
The patent replaces the traditional spindle drive mechanism with a belt drive system combined with an overload clutch. This substitution maintains the essential torque control function through the overload clutch while eliminating the mechanical complexity and speed limitations of the spindle drive, achieving faster back-and-forth movements with simpler construction.
3Object-affected harmful factors
If an overload clutch is integrated in the drive train, then the maximum transmittable drive torque is limited and injury risk is reduced, but the device complexity increases
Solution Approach 1:
The overload clutch is designed as a simple, cost-effective safety component that can be easily integrated into the belt drive system. While it does increase device complexity slightly, the clutch represents a simple mechanical solution that prioritizes user safety over minimal complexity, using straightforward mechanical elements rather than complex electronic control systems.
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 cost-effective, corrosion-resistant, and scalable drive mechanism that ensures safe operation by limiting torque, reducing the risk of injury and enabling efficient back-and-forth movements, thus enhancing the safety and functionality of food preparation apparatuses.
Implementation Method 1
The plastic spring element is realized and disposed in such a manner that, if a defined maximum torque is exceeded, the plastic spring element deflects and the torque transmission from the drive side to the output side is interrupted or limited
Data Source
AI summary
The invention relates to an apparatus (1) for preparing foodstuffs accommodated in a vessel (2), the apparatus including a steam-generating unit arranged in a housing (3) and intended for generating steam, a steam-feeding unit (4) connected to the steam-generating unit in a steam-conducting manner via a steam-supply line and having a steam probe (6) containing at least one steam-discharging opening, and a linear drive having a drive train (17) with an electric motor (18) and by means of which a carriage (10), which carries the steam-feeding unit (4) or a vessel holder (7), is adjusted in translatory fashion relative to the housing (3), wherein an overload clutch (28) is integrated in the drive train (17), between the electric motor (18) and a belt drive (13), in the form of a toothed belt drive, for adjusting the carriage (10).