Adjustable Drawer Railing for Multi-Length Front Attachment

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Solution Overview

Problem

Existing drawer rails for furniture are not adaptable to different drawer lengths, requiring separate production for front and internal pull-out drawers, increasing production costs and complexity.

Innovation Solution

A rail with a positioning device that allows the panel attachment to be fixed in multiple positions relative to the railing strut, enabling the same rail to be used for both front and internal pull-out drawers of varying lengths without changing the rail's length, thereby reducing production costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate railings are produced for front and internal pull-out drawers, then each drawer type can be optimized for its specific length, but production costs and manufacturing complexity increase

Engineering Contradiction:
Improvedrawer stabilityVSAvoidproduction complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The railing is designed with a universal application for both front and internal pull-out drawers. The panel attachment device can be positioned at multiple locations along the railing strut, allowing the same railing design to accommodate different drawer configurations and lengths, thereby eliminating the need for separate railing productions.

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

Solution Approach 2:

The panel attachment device is made adjustable along the railing strut through a positioning mechanism with multiple stop positions. This dynamic adjustability allows the railing to adapt to different drawer lengths and types, transforming a static, single-purpose component into a versatile, adaptive solution.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If separate railings are produced for front and internal pull-out drawers, then each drawer type can be optimized for its specific length, but production costs increase

Engineering Contradiction:
Improvedrawer length optimizationVSAvoidproduction cost
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The railing design incorporates a universal panel attachment device that can be positioned at multiple locations, enabling a single railing type to serve both front and internal pull-out drawers. This universality reduces production costs by eliminating the need to manufacture separate railing types for different drawer configurations.

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

Solution Approach 2:

The effective length of the railing is adjusted by changing the position of the panel attachment device along the railing strut. By modifying the attachment position rather than the railing length itself, the system achieves precise adaptation to different drawer lengths while maintaining standardized production processes.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If the panel attachment device is fixed at a single position on the railing strut, then the railing structure is simplified, but the rail cannot be used for drawers of different lengths

Engineering Contradiction:
Improverailing structureVSAvoiddrawer length adaptability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The panel attachment device incorporates a positioning mechanism with multiple adjustable stop positions along the railing strut. This dynamic positioning capability allows the attachment device to be relocated according to the specific drawer length requirements, transforming a static structure into an adaptive system without significantly increasing overall complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The railing system is divided into modular components: the railing strut with multiple positioning locations and the adjustable panel attachment device. This segmentation allows independent optimization of each component while maintaining overall simplicity, enabling adaptability through the combination of standardized parts.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP2858534B1Drawer railing
Publication Date: 2015.09.23 JULIUS BLUM GMBH
  • EP2858534B1 patent drawingFigure 1
  • EP2858534B1 patent drawingFigure 2
  • EP2858534B1 patent drawingFigure 3

AI summary

Railing (1) for a drawer (100) provided with a front (101), having a railing strut (2) and a panel fastening device (3) at one end (4) of the railing strut (2) for fastening the railing (1) to the front (101), wherein the panel fastening device (3) is formed at least partially in the railing strut (2), wherein the panel fastening device (3) has a positioning device (10) via which the panel fastening device (3) can be fixed at at least two different positions (5, 6) relative to the railing strut (2), which is unchanged in the length thereof.