Quick-fastening element, guide rail and use

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Solution Overview

Problem

Existing quick-fastening elements for guide rails in cooking appliances are difficult to mount supports of the same size as the grid-like side portions and occupy excessive space, limiting the use of guide rails and food supports within the appliance.

Innovation Solution

A quick-fastening element with a first and second holding portion connected by a connecting portion, allowing for angled fastening between bars, which tolerates greater spacing deviations and includes a fastening portion for guide rail attachment, optimizing space utilization and providing variability in positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing quick-fastening elements are used to fasten guide rails to grid-like side portions, then the guide rails can be releasably mounted for cleaning or re-fitting, but the implementation takes up excessive space within the cooking appliance and supports of the same size as the grid-like side portions cannot be easily mounted

Engineering Contradiction:
Improveability to mount guide rails and food supportsVSAvoidspace occupied by quick-fastening element
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The quick-fastening element is divided into separate functional components: a first holding portion for the first bar, a second holding portion for the second bar, and a connecting portion with an integrated fastening portion. This segmentation allows each component to be optimized independently and reduces overall space requirements while maintaining versatility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connecting portion serves multiple functions: it connects the two holding portions, provides structural support, and includes an integrated fastening portion for mounting guide rails. This multi-functionality eliminates the need for separate mounting components, reducing space occupation while enhancing adaptability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If existing quick-fastening elements are used, then releasable fastening is achieved, but the mounting of guide rails becomes difficult and space utilization is reduced

Engineering Contradiction:
Improveease of mounting guide railsVSAvoidspace available for guide rails and food supports
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The fastening portion is merged directly into the connecting portion of the quick-fastening element. This integration allows guide rails to be mounted directly to the quick-fastening element itself, simplifying the mounting process and eliminating the need for additional space-consuming components or complex assembly steps.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If the first and second bars are spaced far apart, then the quick-fastening element must tolerate greater spacing deviations, but this may compromise the security of attachment under load

Engineering Contradiction:
Improvetolerance for spacing deviationsVSAvoidsecurity of attachment under load
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The angles of the first and second holding portions relative to the connecting portion can be adjusted to optimize performance for different bar spacings. By changing these geometric parameters, the element can accommodate greater spacing deviations while maintaining reliable attachment under load through proper force distribution.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS10731866B2Quick-fastening element, guide rail and use
Publication Date: 2020.08.04 ACCURIDE INTERNATIONAL GMBH
  • US10731866B2 patent drawing
  • US10731866B2 patent drawing
  • US10731866B2 patent drawing

AI summary

A quick-fastening element is provided for fastening a guide rail to two adjacent horizontally extending bars arranged in a vertically superposed and parallel relationship. The quick-fastening element has a first holding portion adapted for a positively locking engagement with a first horizontally extending bar of the two adjacent horizontally extending bars, a second holding portion adapted for a positively locking engagement with a second horizontally extending bar of the two adjacent horizontally extending bars, and a connecting portion between the first and second holding portions and connecting the first and second holding portions. Each of the first and second holding portions extends from the connecting portion to one side in angled relationship to the connecting portion fastenably between the two adjacent horizontally extending bars. The connecting portion is configured for fastening the guide rail.