Dishwasher Support Frame Snap-In Connection for Tool-Free Assembly
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Solution Overview
Problem
Existing dishwasher designs require complex assembly processes and high-strength connection points due to the need for screwing or riveting of support frame parts, which complicates assembly and may lead to instability, especially when lifting the dishwasher.
Innovation Solution
A dishwasher with a support frame part attached to the washing compartment's front loading opening, connected via a snap-in mechanism to the base-side mounting part, allowing for tool-free assembly and enhanced stability through a latching connection that includes a height stop to prevent detachment during lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screwing or riveting connection methods are used for support frame parts, then connection strength is improved, but assembly complexity and time increase
Solution Approach 1:
The connection system is segmented into separate components: a support frame part with an insertion end and a mounting base with a receiving structure. This segmentation allows the support frame to be inserted into the receiving structure without requiring screws or rivets, simplifying assembly while maintaining connection strength through the interference fit and positioning features.
Solution Approach 2:
The support frame part is designed to be self-securing through its insertion into the receiving structure. The positioning features (such as positioning protrusions and positioning grooves) and the interference fit between the insertion end and receiving structure automatically secure the connection without requiring additional fastening operations, making the assembly process self-service and tool-free.
2Reliability
If screwing or riveting connection methods are used for support frame parts, then connection reliability is improved, but assembly time increases
Solution Approach 1:
The support frame part and mounting base are pre-designed with integrated positioning features (positioning protrusions and positioning grooves) and interference fit dimensions during manufacturing. This preliminary action ensures that when assembly occurs, the components automatically align and secure themselves through the insertion motion, eliminating the need for time-consuming screwing or riveting operations while maintaining reliable connections.
3Ease of operation
If simple connection methods are used for support frame parts, then assembly simplicity is improved, but connection stability deteriorates
Solution Approach 1:
The insertion end of the support frame part and the corresponding receiving structure of the mounting base are designed with localized interference fit dimensions and positioning features. This local quality enhancement at the connection interface provides stable, reliable connections through the interference fit and positioning protrusions, while the rest of the components remain simple and easy to assemble.
Data Source
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AI summary
The dishwasher has a rinsing container (1), at which a supporting frame part (18) is mounted in the area of its front-sided feed opening (17). The supporting frame part is fixed at a base-sided holding part (7). The supporting frame part of the rinsing container is connected with the base-sided holding part over a latching connection (20).