Drawer Fitting Part Nested in Side Wall Recess for Compact Assembly

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Solution Overview

Problem

Existing connection fittings for drawer side and rear walls require significant space and multiple bends during production, making them inefficient and aesthetically unappealing when installed.

Innovation Solution

A compact fitting part is integrated into a recess of the drawer side wall, allowing the drawer rear wall to rest directly on the side wall with the fitting part concealed, using a fastening web with recesses for form-fitting and/or force-fitting engagement, and optionally featuring elastically deformable latching elements for tool-free assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a connection fitting is used to join drawer side wall and rear wall, then the drawer components can be quickly assembled, but the fitting requires significant space and is visible from the inside of the drawer

Engineering Contradiction:
Improvequick assemblyVSAvoidspace occupied by fitting
Core Design Contradiction:
Ease of manufactureVSVolume of moving object

Solution Approach 1:

The connection fitting is nested within the recess of the drawer side wall, with the drawer rear wall protruding into the recess to accommodate the fitting. This nesting arrangement allows the fitting to be hidden within the wall thickness, eliminating its visibility from the drawer interior while maintaining the quick assembly benefit.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The solution moves the fitting from a protruding position into the third dimension by utilizing the recess space within the drawer side wall thickness. This dimensional repositioning conceals the fitting while preserving its connection function.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of manufacture

If a traditional connection fitting is used, then the drawer walls can be connected, but the fitting requires multiple bends during production and occupies large space

Engineering Contradiction:
Improveconnection capabilityVSAvoidproduction complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The connection fitting is segmented into distinct functional parts: a fastening web with recesses for receiving holding elements, and a structure that accommodates within the recess. This segmentation allows for simplified production without requiring multiple bends, while maintaining the connection capability between drawer walls.

Inventive Principle:
Principle #1Segmentation

3Volume of moving object

If the fitting is made compact and concealed, then aesthetics are improved and space is reduced, but assembly complexity may increase

Engineering Contradiction:
Improvefitting spaceVSAvoidassembly ease
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The fitting incorporates holding elements that automatically engage with the fastening web recesses, enabling self-aligning and tool-free assembly. This self-service mechanism maintains ease of operation while achieving the compact, concealed design within the drawer side wall recess.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The fitting uses elastically deformable latching elements that change their physical state during assembly, allowing for simple snap-fit installation without tools. This parameter change enables both compact design and easy assembly.

Inventive Principle:
Principle #35Parameter changes

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

The solution provides a space-efficient, aesthetically pleasing connection that minimizes visible components and allows for easy assembly without tools, enhancing the design and functionality of the drawer system.

Implementation Method 1

The locking elements made of plastic can be designed to be elastically deformable, so that they can be locked with the recesses of the fitting part without tools.

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP2750550B1Drawer
Publication Date: 2020.03.11 JULIUS BLUM GMBH
  • EP2750550B1 patent drawingFigure 1
  • EP2750550B1 patent drawingFigure 2
  • EP2750550B1 patent drawingFigure 3

AI summary

Drawer (3) having a drawer side wall (10), a drawer wall (11) which is produced from a wood material, and having a fitting part (14) which is attached to one of the two end faces of the drawer wall (11) and by means of which the drawer wall (11) is connected to the drawer side wall (10), wherein the drawer side wall (10) has a recess (15) for receiving the fitting part (14), and wherein the drawer wall (11), which is produced from the wood material, projects into the recess (15) in the drawer side wall (10) by way of that end face which is fitted with the fitting part (14).