Laundry Receiving Assembly With Mechanical Insertion Interlock
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Solution Overview
Problem
Laundry treatment appliances face issues with incorrect reinsertion of functional components, such as lint filters and fluid collectors, leading to operational disruptions and fluid leaks, especially when multiple components need to be inserted into a receiving device.
Innovation Solution
A receiving device with a blocking facility that allows the second functional component to be displaced into a final position only when the first functional component is inserted, using a ramp element and latch element configuration that blocks displacement without electrical components, ensuring correct assembly and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a blocking facility with mechanical elements (ramp and latch) is used, then device complexity is reduced by avoiding sensors and actuators, but ensuring correct component insertion becomes more challenging
Solution Approach 1:
The blocking facility operates autonomously using the insertion force itself to actuate the mechanism. When a component is inserted, the ramp element automatically deflects the latch element, which then blocks or permits the second component's insertion based on the presence of the first component. No external sensors, actuators, or control systems are required - the system serves itself through pure mechanical interaction.
Solution Approach 2:
The latch element acts as an intermediary between the first and second functional components. It translates the presence or absence of the first component into a blocking or permitting state for the second component. The ramp element serves as another intermediary that converts the insertion motion into latch deflection. These intermediary elements mediate the interaction between components without requiring electronic control.
2Reliability
If the latch element remains under continuous tension to block component insertion, then reliability is improved by ensuring correct assembly, but service life is reduced due to material fatigue
Solution Approach 1:
The latch element experiences tension only periodically - specifically during the brief moment when a component is being inserted and the ramp deflects it. Once the component is fully inserted or removed, the latch returns to its neutral, tension-free position. This periodic rather than continuous tensioning dramatically reduces cumulative fatigue stress on the latch element, extending its service life while maintaining reliability during the critical blocking function.
3Adaptability or versatility
If multiple functional components can be inserted into the same receiving device, then adaptability is improved by allowing different configurations, but risk of incorrect assembly increases leading to operational disruptions
Solution Approach 1:
The blocking facility performs a preliminary check before allowing the second functional component to be inserted. By requiring the first component to be properly in place first (which enables the latch to be deflected and permit second component insertion), the system prevents incorrect assembly configurations before they can occur. This preliminary mechanical verification ensures operational reliability while still allowing multiple component configurations.
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
This solution prevents incorrect assembly and operation by ensuring the first functional component is present, allowing for reliable and cost-effective production without sensors or actuators, while extending the service life of the latch element and facilitating easy removal of components.
Implementation Method 1
the latch element can be deflected from a rest position to a release position by the ramp element of the first functional component inserted into the receiving device
Implementation Method 2
displacement to the final position being blocked by the blocking element
Data Source
AI summary
A laundry treatment apparatus includes a receiving device into which a first functional component and a second functional component can be inserted. In one form, the receiving device includes a blocking element which is designed such that, when the first functional component is inserted, the second functional component can be moved into the receiving device up to a final position and, when the first functional component is not inserted, is designed such as to block movement to the final position.