Drawer Wall Offset Section for Precise Guide Rail Alignment

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Solution Overview

Problem

Existing drawer assembly methods for furniture with pull-outs or drawers are inefficient due to the difficulty in aligning and mounting the drawer correctly onto the guide unit, leading to misalignment and complex assembly processes.

Innovation Solution

A drawer wall element with an offset section that provides an inclined planar surface, allowing the drawer to be easily aligned and mounted onto the guide unit by sliding along the offset section, ensuring correct lateral alignment and facilitating easy assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional drawer assembly methods are used without an offset section, then the drawer structure is simpler, but the alignment and mounting of the drawer onto the guide unit becomes difficult and time-consuming

Engineering Contradiction:
ImproveAlignment and mounting of drawer onto guide unitVSAvoidDrawer wall element structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The offset section extends below the bearing surface in the vertical dimension, creating a three-dimensional feature that enables lateral alignment during assembly. This vertical extension provides a surface for lateral contact with the guide unit, transforming a purely horizontal bearing surface into a multi-dimensional alignment feature.

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

Solution Approach 2:

The offset section is pre-formed as part of the drawer wall element structure, enabling preliminary lateral alignment before the drawer is fully mounted. This pre-configured alignment feature guides the drawer into correct position during the assembly process, eliminating the need for complex adjustment procedures.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If a complex alignment mechanism is added to ensure precise drawer positioning, then the mounting precision improves, but the assembly process becomes more complex and time-consuming

Engineering Contradiction:
ImproveLateral alignment precision of drawerVSAvoidAssembly mechanism
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The offset section is a localized feature integrated into the drawer wall element at the specific location where alignment is needed. This local modification provides precise alignment functionality without requiring complex mechanisms throughout the entire drawer structure.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The offset section enables the drawer to self-align with the guide unit during assembly. The inclined planar surface automatically guides the drawer into correct lateral position through contact with the guide unit, eliminating the need for external alignment tools or complex adjustment mechanisms.

Inventive Principle:
Principle #25Self-service

3Stability of the object's composition

If the offset section extends over the entire width of the bearing surface, then the alignment stability is improved, but the manufacturing complexity and material usage increase

Engineering Contradiction:
ImproveAlignment stability of drawerVSAvoidDrawer wall element fabrication
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The offset section extends partially across the width of the bearing surface rather than the entire width. This partial extension provides sufficient alignment stability for the assembly process while avoiding the excessive material usage and manufacturing complexity that would result from a full-width offset section.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentEP3082512B1Drawer for a piece of furniture, and wall element for a drawer
Publication Date: 2018.08.01 GRASS GMBH
  • EP3082512B1 patent drawingFigure 1~2
  • EP3082512B1 patent drawingFigure 3~4

AI summary

Disclosed is a wall element (1) for a drawer. A lateral edge section of a drawer bottom can be inserted into said wall element (1) in order for a drawer sidewall to be formed that adjoins the drawer bottom. The wall element (1) of the drawer is provided with a supporting surface, in particular one that is made of a sheet metal material, for supporting the lateral edge section from below. According to the invention, the wall element (1) of the drawer is provided with an offset section (16) underneath the supporting surface, within the width thereof. In a cross-sectional view parallel to the supporting surface, said offset section (16) extends within the width of the supporting surface, underneath the supporting surface.