Side-rail arrangement
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Solution Overview
Problem
Existing fastening systems for pull-out guides are limited in their ability to securely attach to various rod designs and spacings, often requiring multiple specific fastening elements for different side rails, which restricts flexibility and stability.
Innovation Solution
A side rail with two identical fastening elements that include a fixed bearing for secure Y-direction clamping and a floating bearing for flexible attachment to rods of different thicknesses and spacings, allowing universal use across various rod designs and spacings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed bearing is used for both rods, then stable attachment is achieved, but adaptability to different rod designs is lost
Solution Approach 1:
The fastening element applies different bearing characteristics to different rods: the first rod receives a floating bearing for positional adaptation, while the second rod receives a fixed bearing for stable attachment. This local differentiation resolves the contradiction by providing stability where needed while maintaining adaptability where required.
Solution Approach 2:
The first receptacle is designed as a floating bearing that can dynamically adjust its position to accommodate different rod thicknesses and spacings, while the second receptacle remains fixed. This dynamic adaptability allows the same fastening element to securely attach to various rod designs without compromising attachment stability.
2Adaptability or versatility
If multiple different fastening elements are used for different rod designs, then adaptability is improved, but device complexity increases
Solution Approach 1:
The fastening element is designed with universal applicability through its combination of floating and fixed bearings, allowing a single design to accommodate multiple rod configurations. The floating first receptacle adapts to different rod positions and thicknesses, while the fixed second receptacle provides consistent attachment, enabling one fastening element to replace multiple specialized fasteners.
3Adaptability or versatility
If a floating bearing is used for both rods, then adaptability to different rod designs is achieved, but attachment stability deteriorates
Solution Approach 1:
The fastening element applies different bearing characteristics to different rods: the first rod receives a floating bearing for positional adaptation, while the second rod receives a fixed bearing for stable attachment. This local differentiation resolves the contradiction by providing stability where needed while maintaining adaptability where required.
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
Enables secure and flexible attachment of pull-out guides to rods with varying geometries and spacings, ensuring stability and adaptability to different side rail configurations without the need for multiple fastening elements.
Implementation Method 1
an elastically deformable section can be provided in the region of the fastening element facing the effective direction of gravity. After the rod has been inserted into the fastening element, this section springs back into its starting position to such an extent that the smallest rod diameter provided for this fastening element can no longer pass through the opening.
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A fastening element (10, 10') for arranging a device, preferably a pull-out guide, in or on a domestic appliance, preferably in an oven, on two bars (6, 7, 7') which are parallel substantially in the X direction and are spaced apart from one another in the Z direction, having a first holder (11), which can be arranged on a first bar (7, 7'), and a second holder (20, 20'), which can be arranged on a second bar (6), wherein the second holder (20, 20') is designed as a fixed bearing for accommodating different thicknesses of second bar (6), and the first holder (11) is configured as a movable bearing for compensating for different designs, spacings and/or thicknesses of the two bars (6, 7, 7').