Dish Rack Support Mechanism With Integrated Anti-Rotation Guide
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Solution Overview
Problem
Existing dish rack designs for dishwashers are complex and time-consuming to assemble, leading to increased production costs due to the need for multiple components and potential for unnecessary frictional forces during operation.
Innovation Solution
A simplified carrier mechanism featuring a projection or slider on the holding plate that engages with the basket guide rail, reducing the number of components required and minimizing friction, with wheels and securing elements arranged to ensure secure attachment and easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components (wheels, rollers, securing elements) are used in the carrier mechanism, then the dish rack can be securely attached and limited in rotational movement, but the assembly time increases and production costs increase
Solution Approach 1:
The patent combines the support roller, guide roller, and securing element into a single integrated carrier mechanism comprising two holding plates. This merging of previously separate components reduces the number of parts that need to be assembled while maintaining the functional requirements of support, guidance, and rotational limitation.
Solution Approach 2:
The holding plates are designed to perform multiple functions simultaneously: supporting the dish rack weight, guiding movement along the rail, and limiting rotational movement. This multi-functionality eliminates the need for separate dedicated components for each function, streamlining the assembly process.
2Reliability
If multiple components (wheels, rollers, securing elements) are used in the carrier mechanism, then the dish rack can be securely attached and limited in rotational movement, but the device complexity increases
Solution Approach 1:
The patent integrates the support roller, guide roller, and securing element into a unified carrier mechanism with two holding plates. This consolidation reduces component count and simplifies the overall device structure while preserving all necessary functions for secure attachment and movement control.
Solution Approach 2:
The holding plates serve multiple purposes: they support the rack, provide guidance through the rollers, and limit rotation through integrated securing elements. This multi-functional design reduces the number of separate components needed, thereby reducing device complexity.
3Reliability
If the securing element is in constant contact with the basket guide rail, then rotational movement is limited, but unnecessary frictional forces are generated during operation
Solution Approach 1:
The carrier mechanism is designed so that the securing element (projection) only contacts the guide rail when rotation needs to be limited, not during normal linear movement. This dynamic engagement reduces friction during operation while maintaining rotational limitation when necessary.
Solution Approach 2:
The projection is positioned at a predetermined distance from the guide rail during normal operation, creating a local condition where contact occurs only when needed for rotational limitation. This localized engagement minimizes unnecessary friction while providing security when required.
Data Source
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AI summary
The invention relates to a dish rack (1) for a dishwasher, which dish rack has a plurality of running wheels (15, 16) which can made to engage with rack guide rails (32) of a dishwasher in such a way that a first running wheel (15) which runs on an upper face of a rack guide rail (32) is a supporting roller (15) and a second running wheel (16) limits a rotary movement of the dish rack (1) which occurs in the direction of gravity when the dish rack (1) is withdrawn, and at least one securing element (17) is provided which limits a rotary movement of the dish rack (1) which occurs against the direction of gravity when the dish rack (1) is withdrawn. The invention is characterized in that at least the guide roller (16) and the securing element (17) are combined to form a support mechanism (46).