Drawer Pull-Out Guide With Modular Support Profiles
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Solution Overview
Problem
The production of existing extension guides with central rails having support profiles is complex and costly due to the specific bending process required, which is unnecessary for most applications where the risk of the drawer lifting off is low.
Innovation Solution
The support profiles are designed as separate structural units that can be omitted in standard cases, allowing for modular retro-fitting when necessary, and can be implemented on the central rail to prevent lifting and tilting of heavy drawers by engaging the running carriages and contact legs under the support profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the central rail is designed with integrated support profiles using a specific bending process, then the running carriage is prevented from lifting off and tilting play is reduced, but the production becomes highly complicated and cost-intensive
Solution Approach 1:
The support profile is separated from the central rail into an independent component. The central rail maintains its simple U-profile shape while the support profile is produced separately and attached to it, allowing each component to be manufactured using standard, cost-effective processes rather than a complex integrated bending process.
Solution Approach 2:
The support profile is attached to the central rail to form a combined structure that provides both the rail function and the lifting prevention function. This merging allows the use of simple, standard components that are combined through a straightforward attachment process rather than requiring complex integrated manufacturing.
2Reliability
If the central rail is designed with integrated support profiles using a specific bending process, then the running carriage is prevented from lifting off, but the production time and cost increase
Solution Approach 1:
By segmenting the support profile from the central rail, each component can be manufactured independently using efficient, standard processes. The support profile can be produced in advance and stored, allowing the central rail to be manufactured continuously without interruption for special bending operations, thereby improving overall production efficiency.
3Adaptability or versatility
If the support profile is designed as a separate structural unit, then the extension guide can be retro-fitted modularly for special cases, but the structure becomes more complex
Solution Approach 1:
The support profile is designed as a separate, standalone component that can be easily attached to or removed from the central rail. This segmentation enables modular retro-fitting where support profiles can be added to existing extension guides for special applications without redesigning the entire system, maintaining simplicity while enhancing adaptability.
Solution Approach 2:
The separate support profile design creates a universal solution that can be applied to various central rails and extension guide configurations. The same support profile component can serve different purposes and be adapted to different applications, reducing the need for custom-designed components for each special case.
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
This design simplifies and reduces the cost of extension guides while ensuring stability by using support profiles only where needed, allowing for efficient production and easy retro-fitting for special cases, effectively preventing drawer lifting and tilting.
Implementation Method 1
the at least one rolling body runs on at least one support profile of the central rail
Implementation Method 2
the at least one running carriage engages under the at least one support profile in the position of use of the extension guide with the at least one rolling body to safeguard against being lifted off the central rail
Data Source
AI summary
A pull-out guide for a drawer includes a body rail that is to be attached to a furniture body, a drawer rail that is to be attached to the drawer, and a central rail that is movably mounted between the body rail and the drawer rail. At least one carriage having at least one rolling element is mounted in a movable manner between the central rail and the drawer rail. The at least one rolling element runs on at least one support profile of the central rail, and the at least one support profile is arranged as a separate component on the central rail.