Quick-fit system for telescopic slide

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Solution Overview

Problem

Existing quick fastening systems for telescopic extensions in ovens and similar applications are difficult to assemble and dismantle without tools, and often require complex mechanisms that can be prone to unintentional disengagement.

Innovation Solution

A quick fastening system featuring a retaining bracket with angled end sections and rear and front quick-fastening elements that engage positively with the bracket, providing stable and tool-free attachment and detachment of telescopic extensions, with features like anti-lifting sections and lifting safety hooks for enhanced security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If existing quick fastening systems are used for telescopic extensions, then assembly and disassembly can be performed without tools, but the systems are difficult to assemble and dismantle and may unintentionally disengage

Engineering Contradiction:
Improveease of assembly and disassemblyVSAvoidstability of connection
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The connection system is divided into separate components: a retaining bracket fixed to the body and quick-fastening elements attached to the telescopic extension. This segmentation allows independent optimization of each component for both ease of assembly and secure connection.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The quick-fastening elements feature asymmetric geometry with angled sections that match corresponding angled sections on the retaining bracket. This asymmetric design provides directional engagement that prevents unintentional disengagement while maintaining simple tool-free assembly through a pushing motion.

Inventive Principle:
Principle #4Asymmetry

2Reliability

If complex fastening mechanisms are used to prevent unintentional disengagement, then connection stability improves, but the device complexity increases

Engineering Contradiction:
Improveprevention of unintentional disengagementVSAvoidcomplexity of fastening mechanism
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The angled sections of the quick-fastening elements and retaining bracket create a self-locking mechanism. When the quick-fastening element is pushed onto the retaining bracket, the angled sections engage and automatically prevent lifting or unintentional disengagement without requiring additional complex locking mechanisms.

Inventive Principle:
Principle #25Self-service

3Reliability

If multiple fastening elements are used to secure the telescopic extension, then connection reliability improves, but the number of parts and manufacturing complexity increases

Engineering Contradiction:
Improvesecurity of attachmentVSAvoidmanufacturing simplicity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

Multiple fastening functions are merged into a single integrated quick-fastening element. Each quick-fastening element combines attachment to the rail element, engagement with the retaining bracket, and prevention of unintentional disengagement into one component, reducing the total number of parts while maintaining secure attachment.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The quick-fastening elements serve multiple functions simultaneously: they attach the telescopic extension to the body, provide secure engagement through angled sections, and prevent unintentional disengagement. This multi-functionality reduces the need for separate components for each function.

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

Data Source

PatentEP4286749B1Quick-fit system for telescopic slide
Publication Date: 2024.08.14 ACCURIDE INTERNATIONAL GMBH
  • EP4286749B1 patent drawingFigure 1
  • EP4286749B1 patent drawingFigure 2~3
  • EP4286749B1 patent drawingFigure 4~5

AI summary

Quick-release fastening system for detachable mounting of a telescopic extension (4) to a body, wherein the quick-release fastening system comprises a retaining bracket (3) which is fixed or fixable to the body directly or by means of a side grid (5), as well as a rear quick-release element (1) and a front quick-release element (2) for a positive or positive and force-locking engagement with the retaining bracket (3).