Furniture Suspension Hook Locking for Secure Wall Hanging

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Solution Overview

Problem

Existing suspension devices for hanging furniture on walls face challenges in securing the furniture against unintentional detachment, particularly when the support element is pivoted relative to the counter bearing, and require additional material for a protruding lower fold, limiting their ability to be parked away from the wall.

Innovation Solution

A suspension device with a pivoted securing element that deflects into a blocking position when the hook part is hooked into the counter bearing, utilizing a blocking element to prevent unhooking, and optional spring bars for secure locking and easy release, allowing for secure attachment without additional material and enabling parking away from the wall.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If projections are arranged on the support element to prevent unintentional detachment, then security against detachment is improved, but device complexity and material requirements increase due to the need for a protruding lower fold on the counter bearing

Engineering Contradiction:
Improvesecurity against unintentional detachmentVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Instead of having projections on the support element reach under a protruding lower fold of the counter bearing, the invention inverts the approach by having the securing element deflect through the counter bearing itself into a blocking position. This eliminates the need for the protruding lower fold on the counter bearing while maintaining security against unintentional detachment.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The securing element is designed to be deflectable rather than fixed, allowing it to move dynamically during the hooking process. When the hook part is hooked into the counter bearing, the securing element automatically deflects through the counter bearing into a blocking position that prevents unhooking, providing security without requiring complex pre-positioned projections.

Inventive Principle:
Principle #15Dynamics

2Reliability

If projections are positioned at a sufficient distance from the hook part to reach under the counter bearing, then security against detachment is improved, but assembly time increases due to the need to pivot the support element to a specific position

Engineering Contradiction:
Improvesecurity against unintentional detachmentVSAvoidassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The securing element is pre-positioned on the support element in such a way that when the hook part is hooked into the counter bearing, it automatically deflects through the counter bearing into the blocking position. This preliminary positioning eliminates the need for manual adjustment or pivoting to specific positions during assembly, reducing assembly time while maintaining security.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The securing element performs its own positioning function automatically during the hooking process. As the hook part is inserted into the counter bearing, the securing element self-deflects into the blocking position without requiring external intervention or precise manual positioning, thereby reducing assembly time and improving reliability.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If the support element is pivoted away from the wall for parking, then accessibility is improved, but security against detachment is lost since projections no longer reach under the counter bearing

Engineering Contradiction:
Improveparking accessibilityVSAvoidsecurity against unintentional detachment
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The securing element is designed to remain effective in both parked and suspended positions. When the support element is pivoted away from the wall for parking, the deflectable securing element maintains its blocking position, continuing to prevent unintentional detachment while allowing the furniture to be accessed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The invention changes the parameter of the securing mechanism from fixed projections to a deflectable element that can adapt to different positions. This allows the securing element to maintain its blocking function whether the support element is in the suspended position against the wall or pivoted away for parking, providing both accessibility and security.

Inventive Principle:
Principle #35Parameter changes

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

The solution provides secure attachment and easy assembly of furniture, preventing unintentional detachment and allowing for parking away from the wall, while reducing material requirements and assembly time.

Implementation Method 1

a securing element (7) which is arranged in a deflectable manner on the support element (3) and is positioned in such a way that when the hook part (32) is hung on the counter-bearing (9), the securing element (7) deflects through the counter-bearing (9) into a blocking position that secures the support element (3) against unhooking

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

at least one spring element (62) is arranged on the blocking element (6) with which the blocking element (6) can be locked in the locked position in a locking recess (311) of the support element (3)

Methodology Applied
Scientific EffectSpring force: Spring

Data Source

PatentEP3111801B1Suspension device for furniture
Publication Date: 2018.12.12 HETTICH HEINZE GMBH & CO KG
  • EP3111801B1 patent drawingFigure 1
  • EP3111801B1 patent drawingFigure 2
  • EP3111801B1 patent drawingFigure 3

AI summary

A suspension device (1) for a piece of furniture (10), in particular a hanging piece of hanging furniture, on a counter bearing (9) that can be fixed on a wall (11) has a housing (2) that can be fixed on a furniture wall (101, 102), a Housing (2) carrying element (3) arranged pivotably out of a plane parallel to a base area (21) of the housing (2), wherein the carrying element (3) has a hook part (32) which can be hung on the counter bearing (9), a securing element (7) arranged on the support element (3) to prevent an unintentional detachment of the support element (3) from the counter bearing (9), wherein the securing element (7) is arranged on the support element (3) so that it can be deflected and is positioned in such a way that the Securing element (7) when the hook part (32) is hung on the counter-bearing (9) before the support element (3) reaches a suspended end position relative to the counter-bearing (9) by the counter-bearing (9) in a the support element (3) against Unhook locking position ion deflects, a blocking element (6) being arranged on the support element (3), with which the securing element (7) can be blocked in the blocking position.