Dishwasher Rack Guide Rail With Tool-Free Roller Engagement
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Solution Overview
Problem
Existing dishwasher rack guide rails require assembly inside the washing compartment and have multiple components, leading to complexity and the need for different left and right versions, which complicates installation and maintenance.
Innovation Solution
A basket guide rail with a C-shaped rail body featuring recesses that engage with rollers without tools, allowing for easy assembly and disassembly, and incorporating drainage openings to flush out contaminants, eliminating the need for different versions and simplifying installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rail body has multiple components (horn-shaped front end element, safety clips, rollers) that require assembly inside the washing compartment, then the guide rail can be securely connected to the container, but the installation becomes complex and time-consuming
Solution Approach 1:
The horn-shaped front end element is merged with the rail body to form a single integrated component. The recesses are directly formed in the rail body rather than being separate parts. This merging eliminates multiple assembly steps inside the washing compartment while maintaining the secure connection function through the integrated structure and recess-roller engagement.
Solution Approach 2:
The recesses are pre-formed in the rail body during manufacturing, and the horn-shaped front end element is pre-attached to the rail body. This preliminary preparation allows the guide rail to be installed as a nearly complete assembly, requiring only minimal final assembly steps rather than multiple complex assembly operations inside the washing compartment.
2Adaptability or versatility
If the rear end elements are designed as detachable safety clips, then the rack guide rail can be mounted on the roller arrangement, but multiple components increase the number of parts to be assembled and managed
Solution Approach 1:
The detachable safety clip function is merged into the rail body structure itself through the recesses. Instead of being a separate component, the engagement mechanism is integrated directly into the rail body, reducing the total number of components while maintaining the mounting capability on the roller arrangement.
Solution Approach 2:
The recesses serve multiple functions: they engage with the rollers to enable mounting, they prevent unintentional detachment through their geometric design, and they facilitate easy release when needed. This multi-functionality eliminates the need for separate safety clips and mounting mechanisms.
3Reliability
If the recesses are arranged at a distance from the ends of the rail body in the middle section, then unintentional release is prevented and contaminants can be flushed out, but the design requires precise positioning
Solution Approach 1:
The recesses are designed with curved surfaces that match the geometry of the rollers. This curvature design provides self-aligning characteristics that reduce the sensitivity to precise positioning during manufacturing. The curved geometry naturally guides the rollers into the correct position, compensating for minor variations in recess placement.
4Ease of operation
If the recesses are designed to engage with rollers without tools by pivoting movement, then assembly is simplified, but the engagement geometry becomes more complex
Solution Approach 1:
The recesses are designed with curved surfaces that guide the rollers through a natural pivoting motion during assembly. The curvature geometry enables the roller to be inserted and rotated into the engaged position without tools, while the curved surfaces distribute the engagement forces smoothly throughout the connection.
Data Source
Figure 1~2b
Figure 3~4
AI summary
The invention relates to a rack guide rail (1) for attaching a receptacle which can be withdrawn from a container, in particular a dish rack which can be withdrawn from an interior of a dishwasher, comprising a rail body (2) which can be connected to the receptacle, and the rail body (2) can engage with at least one running roller (20), in particular with a running roller (20) which is arranged in a washing area of a dishwasher. The invention is characterized in that the rail body (2) has at least one cutout (12) which extends transverse to the direction of movement of the withdrawable receptacle and is designed to engage with the at least one running roller (20). The invention also covers a dishwasher comprising at least one rack guide rail according to the invention.