Thin-Walled Oven Pull-Out Guide with Rod-Supported Rail Structure
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Solution Overview
Problem
Existing oven pull-out guides require thick, stable rails to absorb mechanical loads, leading to increased energy consumption due to the material used for heating.
Innovation Solution
A design where a rod supports the guide rail, allowing for thin-walled construction and mechanical load transfer, with the rod resting on the guide rail in various forms and being fixed through clamping or latching mechanisms, and optionally using bimetal webs that contract at operating temperature for a secure grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If thick-walled rails are used to absorb mechanical loads, then stability and strength are improved, but energy consumption increases due to more material being heated
Solution Approach 1:
The pull-out guide is divided into separate functional components: thin-walled guide rails for low thermal mass, discrete fastening elements for load transfer, and a rod structure for additional support. This segmentation allows each component to be optimized independently, using minimal material where possible while maintaining overall structural integrity and load-bearing capacity.
2Use of energy by moving object
If thin-walled guide rails are used to reduce energy consumption, then energy efficiency is improved, but stability and load-bearing capacity deteriorate
Solution Approach 1:
The fastening elements use composite construction combining metal components (for strength and load-bearing) with plastic elements (for insulation and structural support). This composite approach allows the thin-walled guide rails to maintain stability under load while minimizing thermal mass, as the plastic components provide structural support without conducting heat.
Solution Approach 2:
A rod structure is introduced as an intermediary element between the thin-walled guide rails and the side rail of the oven. This rod acts as a mediator that transfers mechanical loads away from the thin-walled rails, allowing them to maintain their slender, low-thermal-mass design while still achieving the required stability and load-bearing capacity through the distributed support system.
3Reliability
If additional fastening elements are used to attach the pull-out guide to the side rail, then attachment stability is improved, but device complexity increases
Solution Approach 1:
Multiple fastening functions are merged into integrated fastening elements that combine attachment, load transfer, and positioning functions in single components. These fastening elements are designed to attach directly to the side rail while simultaneously providing structural support and load path continuity, eliminating the need for separate support brackets, washers, and adjustment mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Achieves high stability with reduced material thickness, minimizing energy consumption and ensuring secure attachment of the pull-out guide to the side rail.
Implementation Method 1
the webs can be made of bimetal, which contracts at the preferred operating temperature in the oven and the rod is thus firmly gripped by the webs
Data Source
AI summary
A pull-out guide (1, 1', 1"", 2"'"), in particular for an oven, comprises a positionally fixed guide rail (2, 2' 2", 2'", 2"", 2'"") and at least one running rail {3, 3"", 3"'"), mounted movably on the guide rail (2, 2', 2", 2'", 2"", 2"'"), wherein the guide rail (2, 2', 2", 2"' 2"", 2"'") is designed as a hollow profile, wherein a shaped body is fitted to the guide rail (2, 2' 2", 2"', 2"", 2"'") at least in sections, the guide rail (2, 2', 2", 2"', 2"", 2""') being supported on said shaped body. As a result, the guide rail (2, 2', 2", 2'", 2"", 2'"") can be of particularly thin-walled design.