Drawer Guide Rail Mount With Tool-Free Height and Side Adjustment

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Solution Overview

Problem

Existing devices for attaching guide units to movable furniture parts, such as drawers, lack flexibility in adjusting the height and lateral position, limiting the precise alignment and inclination of furniture components.

Innovation Solution

A device featuring a hook element with a hook nose at the rear end of the movement rail and an adjustable receiving device that allows vertical and horizontal adjustments, enabling precise positioning of the furniture part by engaging the hook element in a recessed area, which can be adjusted using mechanisms like eccentric fixation or screw-based systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed hook element is used to attach the movement rail to the furniture part, then the attachment is simple and secure, but the height and lateral position cannot be adjusted

Engineering Contradiction:
Improveadjustability of height and lateral positionVSAvoidcomplexity of the attachment device
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The receiving device is made adjustable along the movement rail, transforming a static attachment system into a dynamic one. The receiving element can be positioned at different locations on the rail, enabling height and lateral position adjustment of the furniture part while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The attachment device is divided into separate functional components: a fixed hook element on the furniture part and an adjustable receiving device on the movement rail. This segmentation allows independent adjustment of the receiving device without affecting the hook element, providing flexibility while keeping each component simple.

Inventive Principle:
Principle #1Segmentation

2Manufacturing precision

If traditional fixed mounting is used, then the structure is simple, but precise alignment and inclination adjustment are not possible

Engineering Contradiction:
Improveprecision of alignment and inclinationVSAvoidease of adjustment without tools
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The adjustment mechanism is designed to be operable without tools. The receiving element can be manually moved along the movement rail and fixed at desired positions, allowing users to perform alignment and inclination adjustments directly during installation or maintenance without requiring additional tools.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system allows dynamic adjustment of the receiving device position along the movement rail, enabling precise alignment and inclination settings. The movable receiving element can be positioned at any location on the rail, providing continuous adjustment capability for precise positioning.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the receiving device is made adjustable along the movement rail, then positioning flexibility is improved, but the device complexity increases

Engineering Contradiction:
Improvepositioning flexibilityVSAvoidcomplexity of the receiving device
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The receiving device incorporates a movable receiving element that can be positioned at different locations on the movement rail. This dynamic component provides positioning flexibility while maintaining a relatively simple overall structure by using basic mechanical elements rather than complex mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustable receiving device is segmented into the receiving element and the movement rail interface. This segmentation allows the receiving element to be independently adjusted along the rail while keeping the overall attachment mechanism simple and maintainable.

Inventive Principle:
Principle #1Segmentation

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 easy height and lateral adjustment of furniture parts, allowing for precise alignment and inclination without the need for tools, ensuring secure and customizable positioning within the plane of multiple drawer fronts.

Implementation Method 1

The displacement means can, for example, comprise a gear and be designed in the form of an eccentric fixation with an eccentrically mounted bolt or pin

Methodology Applied
Scientific EffectEccentric fixation: Eccentric

Implementation Method 2

or a worm displacement with a worm and worm wheel

Methodology Applied
Scientific EffectWorm displacement: Worm Drive

Implementation Method 3

An embodiment with a slot and a clamping screw is also conceivable

Methodology Applied
Scientific EffectMechanical fastening: Screw

Data Source

PatentEP2205126B1Device for fitting a guide unit, and furniture part and piece of furniture having such a device
Publication Date: 2016.08.17 GRASS GMBH
  • EP2205126B1 patent drawingFigure 1a~1b
  • EP2205126B1 patent drawingFigure 2
  • EP2205126B1 patent drawingFigure 3a~3b

AI summary

The invention proposes a device for fitting a guide unit on a first furniture part which is guided for movement in relation to a second furniture part, wherein the guide unit comprises a fixed rail, which is arranged on the second furniture part, and a movement rail (2), which is arranged on the first furniture part. According to the invention, the device is designed for a movement rail (2) which is provided, at the rear end, with a hook element (3) with a hook nose (5) for fixing the first furniture part in the rear region. Also provided is an adjusting device (1) with an accommodating device (7) for engagement of the hook element (3), this device being located, in an assembled state, on the first furniture part, and the hook element (3) therefore engages in the accommodating device (7), it being possible to adjust the accommodating device (7) on the adjusting device (1) in at least one direction in space.