Flexible Wall Suspension Hook for Concealed Picture Hanging

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Solution Overview

Problem

Conventional wall suspension systems, such as the rail system, are aesthetically unattractive and costly due to the use of rigid rods made of materials like aluminum, steel, or brass, and often leave marks on walls, making them unpopular for renters and aesthetically undesirable for general use.

Innovation Solution

A device featuring a hook with a flexible clip and a polymer threaded portion, integrated with a sleeve and base, allowing for adjustable and concealed attachment, using a thermoplastic polymer or aluminum components, and a spacer for enhanced aesthetics and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid rod is used in the rail system, then the structural strength is improved, but the aesthetic appearance deteriorates and manufacturing cost increases

Engineering Contradiction:
Improvestructural strengthVSAvoidaesthetic appearance
Core Design Contradiction:
StrengthVSShape

Solution Approach 1:

The patent replaces the rigid rod with a flexible cord or chain that can be concealed within the picture rail, eliminating the visible rigid structure while maintaining suspension functionality. This resolves the aesthetic contradiction by hiding the structural element.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent extracts the rigid rod from the visible portion of the system and replaces it with a flexible element that can be contained within the rail structure, separating the structural support function from the visible aesthetic component.

Inventive Principle:
Principle #2Taking out (Extraction)

2Strength

If a rigid rod is used in the rail system, then the structural strength is improved, but the manufacturing cost increases

Engineering Contradiction:
Improvestructural strengthVSAvoidmanufacturing cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The flexible cord or chain replacement eliminates the need for expensive rigid rod materials (aluminum, steel, brass) and complex machining, significantly reducing manufacturing costs while maintaining suspension capability.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent employs inexpensive flexible materials such as cord or chain that can be easily manufactured and replaced, avoiding the high material and manufacturing costs associated with rigid metal rods.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Reliability

If screws or similar systems are used, then the suspension reliability is improved, but harmful effects on the wall occur

Engineering Contradiction:
Improvesuspension reliabilityVSAvoidwall damage
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces a picture rail as an intermediary structure that bears the suspension load, eliminating the need for direct wall penetration by screws. The rail system distributes the load across multiple mounting points without damaging the wall surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Ease of operation

If the rod is made visible, then the structural function is clear, but the aesthetic appearance deteriorates

Engineering Contradiction:
Improvestructural clarityVSAvoidaesthetic appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The flexible cord or chain can be concealed within the picture rail channel, making the structural element invisible while maintaining its suspension function. This resolves the contradiction by hiding the structure rather than making it visible.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent extracts the visible rod component from the system and replaces it with a concealed flexible element, separating the structural support function from the visual appearance.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP2324738B1Device for suspending items on a wall
Publication Date: 2012.05.30 CIVIC IND ANCIENS ETAB HEUBES & CIE
  • EP2324738B1 patent drawingFigure 1~3
  • EP2324738B1 patent drawingFigure 4~8
  • EP2324738B1 patent drawingFigure 9~10

AI summary

The device has a hook (2) cooperating with a support fixed to a wall or a ceiling. An attachment (6) hooking an element to be suspended is connected to the hook by a flexible link (4). The hook and the attachment comprise assembling caps (3, 7), and sockets (5, 9) comprising a portion cooperating with the assembling caps for fixation of the sockets on the caps, where the flexible link is formed by creating a winding path between the caps and the sockets. The assembling caps are formed of thermoplastic polymer material, and the sockets are formed of aluminum.