Dishwasher Container Holder with Force-Triggered Overload Release
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Solution Overview
Problem
Existing container holders for dishwashers lack effective overload protection, which can lead to deformation or breakage when excessive force is applied, and they often do not provide a space-saving solution for when containers are not in use.
Innovation Solution
A container holder with a holding device that transitions from a holding position to an inclined position when a vertical downward force exceeds a threshold value, utilizing a form closure mechanism for secure holding below the threshold and unlocking to prevent deformation, and featuring a rotatable design with a cam and projection system for space-saving upward folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the holding device is made rigid to ensure secure holding, then the holding strength is improved, but the device becomes susceptible to deformation or breakage under excessive force
Solution Approach 1:
The holding device transitions from a static rigid structure to a dynamic system with defined movement stages. The device can rotate between a holding position (0° to +10°) and an inclined position (+10° to +20°), allowing it to absorb excessive forces through controlled movement rather than rigid resistance, thereby preventing deformation and breakage while maintaining secure holding under normal conditions
Solution Approach 2:
The device changes its operational parameters based on the applied force. Under normal forces, it maintains a stable holding angle (0° to +10°) for secure gripping. When excessive force is detected, it transitions to an inclined position (+10° to +20°), effectively changing its mechanical parameters to protect against damage while still providing overload protection
2Reliability
If the container holder is designed with a fixed structure to ensure stability, then the holding reliability is improved, but the space utilization deteriorates when containers are not in use
Solution Approach 1:
The container holder is designed as a dynamic component that can rotate between a horizontal holding position (0° to +10°) for use and an upwardly folded inclined position (+10° to +20°) for space-saving storage. This dynamic capability allows the same structure to provide stable holding when needed while minimizing space consumption when not in use, resolving the contradiction between reliability and volume utilization
3Adaptability or versatility
If the holding device allows free movement to accommodate force variations, then the adaptability is improved, but the control over the holding position deteriorates
Solution Approach 1:
The device implements controlled dynamics with defined movement stages rather than free movement. It can rotate from the holding position (0° to +10°) to the inclined position (+10° to +20°) in response to force variations, providing adaptability while maintaining control through predetermined angular ranges and stable equilibrium positions, preventing uncontrolled movement
Solution Approach 2:
The movement range is segmented into distinct stages: the holding position (0° to +10°) for normal operation and the inclined position (+10° to +20°) for overload conditions. This segmentation allows the device to adapt to different force conditions while maintaining control, as each segment has defined boundaries and stable equilibrium points rather than allowing continuous uncontrolled movement
Data Source
AI summary
A container holder for a dish basket of a household dishwasher includes a holding device, which has a holding position for holding a container and a downwardly inclined position relative to the container. The holding device is designed to move out from the holding position into the inclined position when a vertical, downwardly directed force is exerted on the holding device and exceeds a threshold value.