Side wall for drawers

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Solution Overview

Problem

Existing drawer side wall covers are difficult to mount securely without disrupting the visible surface and maintaining aesthetic appeal, especially when attaching company logos or information, as traditional fastening methods create indentations or require precise alignment.

Innovation Solution

The implementation of two spaced, separate depressions on the rear side of the drawer side wall and two elastically resilient clamping tabs on the cover, allowing for secure positioning and easy attachment without visible fasteners, with the clamping tabs snapping into the depressions for precise alignment and secure locking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional fastening methods are used to attach the cover to the drawer side wall, then the cover can be securely attached, but the visible surface is disrupted by recesses or fastening elements

Engineering Contradiction:
Improvesecure attachment of coverVSAvoidintegrity of visible surface
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The fastening function is extracted from the visible surface and relocated to the rear side of the drawer side wall. Two spaced-apart recesses are provided on the rear side only, allowing clamping flaps to engage without disrupting the aesthetic visible surface. This separates the functional requirement (secure attachment) from the aesthetic requirement (intact visible surface).

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The clamping flaps act as intermediary elements that bridge the cover and the drawer side wall through the recesses on the rear side. These flaps provide the fastening function while remaining hidden from the visible surface, mediating between the aesthetic and functional requirements.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If a single large recess is provided for fastening, then the cover can be attached, but the stability of the thin sheet metal drawer side is compromised

Engineering Contradiction:
Improvesimplicity of fastening structureVSAvoidstability of drawer side
Core Design Contradiction:
Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The single large recess is segmented into two spaced-apart smaller recesses on the rear side of the drawer side wall. This segmentation distributes the fastening load across multiple points, maintaining the stability of the thin sheet metal structure while still providing adequate attachment capability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The recesses are strategically positioned at specific locations on the rear side to provide optimal structural support. The local placement of recesses considers the stress distribution in the thin sheet metal, ensuring stability is maintained at critical points without compromising overall structural integrity.

Inventive Principle:
Principle #3Local quality

3Ease of operation

If the recesses are made larger to facilitate easier attachment, then the cover can be attached more easily, but the positioning precision of the cover is reduced

Engineering Contradiction:
Improveease of cover attachmentVSAvoidpositioning precision of cover
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The recesses are designed with dimensions that provide minimal lateral play (0.1-3 mm), which is excessive enough to allow easy insertion of the clamping flaps but controlled enough to maintain precise positioning. This partial excess in dimensioning achieves both ease of operation and positioning precision.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The dimensions of the recesses and clamping flaps are carefully optimized to achieve the desired balance between ease of attachment and positioning precision. The lateral play parameter is controlled within a specific range (0.1-3 mm) to simultaneously satisfy both requirements.

Inventive Principle:
Principle #35Parameter changes

4Reliability

If the clamping flaps are made more rigid to ensure secure engagement, then the positioning stability is improved, but the ease of sliding the cover onto the drawer side panel is reduced

Engineering Contradiction:
Improvesecure engagement of clamping flapsVSAvoidease of sliding cover on
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The clamping flaps are designed with elastic properties that allow them to dynamically adapt during the attachment process. When the cover is being slid on, the flaps can flex to accommodate misalignment, and once positioned, they spring into the recesses to provide secure engagement. This dynamic behavior resolves the contradiction between rigidity for security and flexibility for ease of installation.

Inventive Principle:
Principle #15Dynamics

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

Ensures easy and secure attachment of the cover to the drawer side wall with minimal lateral play, maintaining the integrity of the visible surface and providing a stable, aesthetically pleasing solution for mounting logos or information.

Implementation Method 1

two elastically spring-loaded, separate clamping flaps (8a, 8b) on the cover (4), which engage in the recesses (9a, 9b)

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4166039A1Side wall for drawers
Publication Date: 2023.04.19 JULIUS BLUM GMBH
  • EP4166039A1 patent drawingFigure 1
  • EP4166039A1 patent drawingFigure 2
  • EP4166039A1 patent drawingFigure 3

AI summary

Drawer side panel (2), in particular a double-walled drawer side panel, with an outer wall (3) having an outer visible surface (3a) and a rear surface (3b) facing away from the visible surface (3a), and with a cover (4) having fastening means (8a, 8b) by means of which it can be fixed to the rear surface (3b) of the outer wall (3), wherein a visible section (4a) of the cover (4) abuts the outer wall (3a) with its rear surface (13), wherein two spaced-apart, separate recesses (9a, 9b) are provided on the rear surface (3b) of the outer wall (3), and the fastening means of the cover (4) comprise two elastically resilient, separate clamping flaps (8a, 8b), each of which engages in a corresponding recess (9a, 9b) to securely fasten the cover cap (4) to the drawer side panel (2).