Dishwasher Base Carrier Assembly With Screwless Flange Locking
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Solution Overview
Problem
Current dishwashers have high production costs due to complex assembly processes involving screw connections, which require significant time and manual labor, leading to inefficiencies and increased costs.
Innovation Solution
A dishwasher design featuring a flange arrangement with bent holding sections that interact with a downward-pointing surface of the guide arrangement, allowing for a screwless connection between the washing container and the base support, enabling automation and simplifying the assembly process by eliminating the need for screwing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If screw connections are used to connect the washing container to the base support, then the connection stability is improved, but the assembly time and production cost increase
Solution Approach 1:
The holding sections are pre-formed as integral parts of the flange arrangement during container manufacturing. These holding sections are prepared in advance with the correct geometry and position, so that during assembly they can be simply inserted into the guide arrangement and automatically assume the locked position without requiring any additional fastening operations.
Solution Approach 2:
The holding sections are designed to automatically engage with the guide arrangement through their own geometric features. The L-shaped configuration of the holding sections allows them to self-align and self-lock into the guide arrangement without requiring external screws, clamps, or other fastening mechanisms. The connection stabilizes itself through the inherent geometry of the components.
2Reliability
If manual screwing operations are performed on an assembly line, then the connection reliability is improved, but the productivity and automation level decrease
Solution Approach 1:
The holding sections are designed to automatically engage with the guide arrangement through their own geometric features. The L-shaped configuration of the holding sections allows them to self-align and self-lock into the guide arrangement without requiring external screws, clamps, or other fastening mechanisms. The connection stabilizes itself through the inherent geometry of the components.
Solution Approach 2:
The invention extracts and eliminates the screws and manual fastening operations from the assembly process. By removing these complex fastening elements and replacing them with the simplified holding section geometry, the assembly line can proceed without dedicated fastening stations, significantly improving productivity and enabling higher automation levels.
3Strength
If multiple screw holes are provided in the flange arrangement, then the connection strength is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The invention extracts and eliminates the screws and manual fastening operations from the assembly process. By removing these complex fastening elements and replacing them with the simplified holding section geometry, the assembly line can proceed without dedicated fastening stations, significantly improving productivity and enabling higher automation levels.
Solution Approach 2:
The flange arrangement is segmented into multiple holding sections distributed at different locations. This segmentation allows the connection strength to be distributed across multiple contact points between the holding sections and the guide arrangement, maintaining overall connection strength while simplifying the assembly process at each individual location.
Data Source
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AI summary
The invention relates to a dishwasher, in particular a household dishwasher (1), comprising a washing container (2) which has a flange structure (8, 9) arranged on the outside, and comprising a base carrier (12) which has a laterally acting guide structure (14, 15), into which the washing container (2) is inserted from the top, wherein the flange structure (8, 9) comprises a retaining section (22) that is bent such that it interacts with a surface (23) of the guiding structure (14, 15) directed toward the bottom such that the washing container (2) is positively connected to the base carrier (12).