Oven Pull-Out Rail Latching for Stable Extended and Retracted Positions
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Solution Overview
Problem
Existing pull-out devices in baking ovens face challenges with complex and costly assembly, and unintentional displacement of the running rail when slightly inclined relative to the horizontal.
Innovation Solution
A pull-out device with fastening elements and resilient latching means that allow the guide rail to be fixed to a side rail, ensuring the running rail can be securely locked in both retracted and extended positions, preventing unintentional movement even when inclined.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring latching device with slotted guide is used to fix the food support in a retracted position, then the latching function is achieved, but the structure becomes complicated and expensive to manufacture and assemble
Solution Approach 1:
The patent changes the physical state of the latching mechanism by using elastic deformation of metal components. The resilient web and projection are designed to flex and lock into position, transforming a complex mechanical latching system into a simple elastic deformation-based system that achieves reliable latching without complicated structures
Solution Approach 2:
The invention extracts the essential latching function from the complex spring latching device and implements it through a simplified resilient web mechanism. By removing unnecessary components and keeping only the critical latching elements (resilient web, projection, recess), the structure is simplified while maintaining the latching function
2Ease of manufacture
If clamp-like holding sections are used to fix the pull-out guide to the side rail, then assembly is facilitated, but the running rail may move unintentionally if the pull-out slide is slightly inclined
Solution Approach 1:
The patent segments the fastening function into two independent parts: the clamp-like holding section for easy assembly and the resilient web for position stabilization. This segmentation allows each component to perform its specific function optimally - the clamp provides easy attachment while the resilient web prevents unintentional movement
Solution Approach 2:
The invention merges the fastening function and the latching function into a unified fastening element. The clamp-like holding section and the resilient web are integrated into a single component that simultaneously achieves easy assembly and position stability, eliminating the need for separate mechanisms
3Ease of manufacture
If the pull-out guide is fixed to the side rail using simple fastening methods, then assembly is easy, but the running rail lacks secure fixation in predetermined positions
Solution Approach 1:
The resilient web mechanism is designed to automatically latch when the running rail reaches predetermined positions. The elastic deformation of the resilient web creates an automatic locking action that secures the running rail without requiring manual intervention, providing both easy assembly and secure position fixation
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
The solution simplifies assembly, prevents unintentional displacement of the running rail, and allows for secure fixation in predetermined positions, enhancing user handling and stability during use.
Implementation Method 1
The latching means is designed with a resilient web in order to be able to latch
Data Source
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AI summary
The invention relates to a pull-out device, in particular for baking ovens, comprising a side grate (1) that can be installed in an interior space of a baking oven and that comprises several horizontal rods (3), which have at least one bent end section (4) on opposite sides, said end section being fixed on a vertical post (2), wherein a guide rail (6) of a pull-out guide (5, 5', 5'', 5''') is fixed on at least one rod (3) by means of fastening elements (8, 8', 9, 9'), wherein at least one locking means (11, 13, 19, 21, 25, 30, 40) is provided in order to detachably fix a sliding rail (7) movably supported on the guide rail (6) in an extended and/or retracted position.