Drawer Panel Sliding Shell Guides for Narrow Frames

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Solution Overview

Problem

Existing drawer frames require a large overall width, making it difficult to achieve narrow designs, and mobility between the inner and outer shells is challenging, especially when using materials like steel where forming sliding guides directly is not feasible without significant design effort.

Innovation Solution

The introduction of guide elements that can be detachably fastened to either the inner or outer shell, allowing for sliding guides to be formed between the shells, with upper and lower sliding guides providing limited linear movement to facilitate access and precise positioning, and made from materials like plastic for optimal geometry and sliding properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of moving object

If traditional drawer frames are used, then structural integrity is maintained, but the overall width becomes too large

Engineering Contradiction:
Improveframe widthVSAvoidstructural integrity
Core Design Contradiction:
Length of moving objectVSStrength

Solution Approach 1:

The frame is divided into an inner shell and an outer shell that can move independently relative to each other. This segmentation allows the frame to maintain structural integrity through the interaction of two separate components while reducing the overall width by eliminating the need for a single wide rigid structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Guide elements are introduced as intermediary components between the inner and outer shells to enable controlled movement. These guide elements facilitate the sliding motion while maintaining proper alignment and structural stability, allowing narrow design without compromising strength.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If sliding guides are formed directly on steel shells, then structural strength is maintained, but manufacturing complexity increases significantly

Engineering Contradiction:
Improvesliding guide fabricationVSAvoiddesign effort
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

Guide elements made of plastic are introduced as intermediary components between the steel inner and outer shells. These plastic guide elements provide the necessary sliding surfaces and geometric flexibility without requiring complex forming operations on the steel shells, significantly simplifying manufacturing while maintaining structural strength.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The frame combines different materials - steel for the inner and outer shells to maintain strength, and plastic for the guide elements to provide sliding functionality. This composite approach allows each material to be used where it is most effective, simplifying overall manufacturing.

Inventive Principle:
Principle #40Composite materials

3Length of moving object

If narrow frame design is implemented, then mobility between shells is improved, but access to internal space becomes difficult

Engineering Contradiction:
Improveframe widthVSAvoidaccess to interior space
Core Design Contradiction:
Length of moving objectVSEase of operation

Solution Approach 1:

The outer shell is designed to move dynamically relative to the inner shell through the guide elements. This mobility allows the outer shell to be displaced laterally, providing temporary access to the internal space between the shells for installation and maintenance operations, while maintaining a compact narrow profile during normal use.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3496571B1Panel for a drawer
Publication Date: 2020.05.13 PAUL HETTICH GMBH & CO KG
  • EP3496571B1 patent drawingFigure 1
  • EP3496571B1 patent drawingFigure 2a
  • EP3496571B1 patent drawingFigure 2b

AI summary

The invention relates to a panel (1) for a drawer (4, 5), which panel has an outer shell (11) and an inner shell (10), said outer shell (11) being slidably mounted relative to said inner shell (10), especially to a limited extent. The outer shell (11) and the inner shell (10) are slidably guided relative to each other at least to a limited extent by means of at least two sliding guides (S1, S2, S3). At least one of the at least two sliding guides (S1, S2, S3) has one or more guide element(s) (24, 24', 24'', 25a, 25b) mounted between the outer shell (11) and the inner shell (11, 10).