Guide Rail Clip Fixing for Secure Anti-Tilting Oven Racks
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Solution Overview
Problem
Existing guide rails with quick-action fixing devices struggle to securely attach to angled end regions of grid-type side parts in domestic appliances without requiring precise alignment and skilled assembly.
Innovation Solution
The guide rail features two retaining elements with clip-type sections that engage both the longitudinal and angled regions of the rod, allowing for secure attachment without tilting, with a design that enables easy positioning and intuitive assembly by sliding and pivoting into place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick-action fixing device is used to enable easy attachment, then the ease of operation is improved, but the reliability of secure attachment against tilting deteriorates
Solution Approach 1:
The retaining element is divided into two distinct retaining sections: a first retaining section that engages the longitudinal extent region of the rod, and a second retaining section that engages the angled end region. This segmentation allows each section to perform a specific function - the first provides easy initial engagement while the second prevents tilting, thus resolving the contradiction between ease of operation and reliability
Solution Approach 2:
Different parts of the retaining element have different geometric properties tailored to specific engagement zones. The first retaining section has a configuration optimized for engaging the longitudinal rod region, while the second retaining section has a different configuration optimized for engaging the angled end region. This local differentiation ensures both easy attachment and secure anti-tilting performance
2Device complexity
If a single retaining element is used to simplify the device structure, then the device complexity is reduced, but the ability to prevent tilting deteriorates
Solution Approach 1:
Two retaining sections are merged into a single integrated retaining element that is fixed to the guide rail. This merging maintains device simplicity by using one component rather than multiple separate parts, while still achieving anti-tilting capability through the combined action of the first retaining section (engaging the longitudinal region) and the second retaining section (engaging the angled end region)
3Reliability
If precise alignment is required for secure attachment, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The first retaining section is designed to initially engage the longitudinal extent region of the rod, establishing preliminary contact and alignment. This preliminary action guides the guide rail into the correct position before the second retaining section engages the angled end region to provide secure anti-tilting attachment, eliminating the need for precise pre-alignment by the assembler
Data Source
AI summary
The invention relates to a guide rail, which can be fixed to horizontal bars including angled end regions on a grid-type side part of an oven, a dishwasher or similar appliances and which has a rapid fixing device, including two retaining elements that are fixed in the end region of the guide rail and that can be detachably fixed to a bar on the grid-type side part. According to the invention, both the front and the rear retaining element have respective first and second clip-type retaining sections, the first partially encompassing the longitudinal extension of a bar and the second partially encompassing the angled end regions of said bar. The retaining section of the rear retaining element is open towards the rear of the guide rail, allowing the rail with its rapid fixing device to be pushed and fixed onto one of the bars from the front of the grid-type side part.