Wall Cupboard Hook Locking Against Accidental Upward Unhooking

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Solution Overview

Problem

Existing systems for securing wall cupboards to a fixed wall support do not effectively prevent accidental unhooking, especially when subjected to direct upward forces, which can lead to damage and safety risks, particularly with low-hanging cupboards and increased risk to children.

Innovation Solution

A release-preventing system for wall cupboards that incorporates unlacing means, such as reciprocal hooking mechanisms or set-screws, between the hook and the wall support to securely engage the cupboard, preventing unintended disengagement while allowing easy removal when necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a simple hook system is used to attach wall cupboards to wall supports, then the assembly is simple and easy to install, but the system cannot prevent accidental unhooking when direct upward forces are applied

Engineering Contradiction:

Improvesimplicity of assemblyVSAvoidprevention of accidental unhooking

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The coupling mechanism is divided into two independent parts: a first coupling part integrated into the hook system and a second coupling part integrated into the wall support. This segmentation allows each part to be optimized independently while working together to provide both simplicity of assembly and prevention of accidental unhooking through the相互配合 of the two parts

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first and second coupling parts are designed to nest within each other, with one coupling part positioned inside or alongside the other. This nested configuration allows the safety mechanism to be integrated within the existing hook structure without adding external complexity, maintaining ease of manufacture while providing reliable accidental unhooking prevention

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If a secure locking mechanism is added to prevent accidental unhooking, then safety and reliability are improved, but the device complexity and assembly difficulty increase

Engineering Contradiction:

Improvesafety against accidental releaseVSAvoidcomplexity of release-preventing system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The safety coupling mechanism is merged with the existing hook and wall support structures. The first coupling part is integrated into the hook system and the second coupling part is integrated into the wall support, combining the safety function with the structural elements rather than adding separate, complex locking components

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The coupling parts are designed to automatically engage and lock together through their geometric configuration, eliminating the need for additional locking mechanisms, adjustment devices, or complex assembly procedures. The system self-secures when the hook is attached to the wall support, providing safety without increasing device complexity

Inventive Principle:

Principle #25Self-service

3Reliability

If a permanent fixed connection is used between hook and wall support, then accidental unhooking is prevented, but the cupboard cannot be easily removed when necessary

Engineering Contradiction:

Improveprevention of unintended disengagementVSAvoidease of removal when necessary

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The coupling system transitions from a static permanent connection to a dynamic controlled connection. The first and second coupling parts are designed with movable elements that maintain a secure locked state under normal conditions but can be deliberately actuated to release. This dynamic design allows the system to adapt between providing strong prevention of accidental unhooking and enabling easy intentional removal

Inventive Principle:

Principle #15Dynamics

4Ease of operation

If low-hanging wall cupboards are installed to improve accessibility, then ease of use is improved, but the risk of accidental unhooking by children increases

Engineering Contradiction:

Improveaccessibility of cupboardVSAvoidrisk of accidental unhooking

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The coupling mechanism incorporates preliminary anti-action by designing the first and second coupling parts to automatically resist upward forces that could cause unhooking. The geometric configuration of the coupling parts creates inherent mechanical resistance to accidental release, countering the harmful effect of children pulling or lifting on low-hanging cupboards before such accidental unhooking can occur

Inventive Principle:

Principle #9Preliminary anti-action

Data Source

PatentUS9033294B2Release preventing system for wall cupboards

Publication Date: 2015.05.19 LEONARDO

AI summary

A release-preventing system for wall cupboards wherein a cupboard (40, 70, 105, 110, 150) is hooked to a support (47, 76, 97, 115, 155) fixed to the wall (48, 77, 98, 114, 154) by a hook (41, 73, 91, 125, 162) of a cupboard holding device (40, 90, 124, 163) characterized in that between the hook (41, 73, 91, 125, 162) and the support (47, 76, 97, 115, 155) there is a release preventing element (51, 79, 101, 121, 160, 167) that prevents unhooking of the cupboard.