Sliding door system and a method of absorbing forces in a sliding door system

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Solution Overview

Problem

Conventional sliding door systems for cabinets and wardrobes often intrude on interior space, are aesthetically unpleasing, and can cause damage due to undesirable forces reverberating when doors slam against guide rails or fittings.

Innovation Solution

A sliding door system with a centre beam dividing the cabinet into compartments, using brackets to secure guide rails in a way that absorbs forces from the doors, distributing them across the cabinet and centre beam to prevent damage and optimize space usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If guide rails are screwed into the front area of the cabinet, then the sliding door can be supported, but the cabinet's interior space is intruded upon and storage space is reduced

Engineering Contradiction:
Improvesupporting capabilityVSAvoidstorage space
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The guide rail mounting is transitioned from the front horizontal plane to the vertical side walls and centre beam. By moving the mounting location to a different spatial dimension (vertical sides rather than front face), the guide rails no longer intrude into the cabinet's interior storage volume while still providing adequate door support.

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

2Reliability

If guide rails are secured above or to the side of the cabinet, then space is occupied that could be used for storage, but the doors can be supported, however this results in doors extending above, below, and to the sides of the cabinet which is aesthetically displeasing and creates obstructions

Engineering Contradiction:
Improvedoor supportVSAvoidaesthetic appearance
Core Design Contradiction:
ReliabilityVSShape

Solution Approach 1:

The guide rail support system is segmented into multiple discrete mounting points distributed along the centre beam and side walls. This segmentation allows the door weight and forces to be distributed across several locations rather than concentrated at single points, enabling the door to be supported while maintaining a clean, flush appearance with the cabinet front.

Inventive Principle:
Principle #1Segmentation

3Speed

If sliding doors are opened and closed quickly, then operation speed is improved, but undesirable forces reverberate throughout the cabinet causing damage to contents and premature wearing of guide rails and fittings

Engineering Contradiction:
Improvedoor operation speedVSAvoidforce reverberation
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The centre beam and side wall mounting structure provides inherent cushioning and force absorption before forces are transmitted to the cabinet contents. The distributed mounting points and structural integration create a buffer that dampens impact forces generated during quick door operations, preventing harmful reverberations while allowing rapid door movement.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

4Reliability

If multiple mounting locations are used for the guide rail, then force distribution is improved and wear is reduced, but the device complexity increases

Engineering Contradiction:
Improveforce distributionVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The centre beam and side walls serve multiple functions: they provide structural support for the guide rails, act as force distribution elements, and maintain the cabinet's structural integrity. By making these existing structural elements multi-functional, additional mounting locations are created without adding separate dedicated components, thus avoiding increased device complexity while achieving improved force distribution.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3478913B1Sliding door system and a method of absorbing forces in a sliding door system
Publication Date: 2024.04.10 INTER IKEA SYST
  • EP3478913B1 patent drawingFigure 1
  • EP3478913B1 patent drawingFigure 2
  • EP3478913B1 patent drawingFigure 3

AI summary

A sliding door system (400) for a cabinet (300), having at least one centre beam (308) dividing the cabinet (300) in at least two vertically extending compartments, is disclosed. The sliding door system (400) comprises a guide rail (200, 250) for supporting a sliding door (404); and at least a first bracket (100a, 100d) and a second bracket (100b, 100c) for securing the guide rail (200, 250) in front of the cabinet (300). The first bracket (100a, 100d) is mounted on a side wall (302) of the cabinet (300) and the second bracket (100b, 100c) is mounted on a side of the centre beam (308) that faces away from the side wall (302) with the mounted first bracket (100a, 100d); whereby a force acting on the guide rail (200, 250) from an associated sliding door (404) will at least partly be absorbed by the second bracket (100b, 100c) and the centre beam (308). A method for absorbing forces during use of a sliding door system is also disclosed.