Release preventing system for wall cupboards
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Solution Overview
Problem
Existing wall cupboard systems are prone to 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, necessitating a safety mechanism to prevent such incidents.
Innovation Solution
A release-preventing system that includes a grain with a threaded section and a manoeuvring tool to engage with a 'C'-shaped bar, preventing the hook from disengaging, combined with alternative embodiments using a blocking device with elastic elements or a sliding mechanism to securely attach the cupboard to the wall, ensuring safety and ease of assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple hook mechanism is used to attach the cupboard to the wall, then the assembly process is simple and the device complexity is low, but the reliability is poor because the cupboard can be accidentally unhooked when direct forces are applied from the bottom upwards
Solution Approach 1:
The holding device is divided into two independent functional parts: a hook for normal attachment and a separate grain (screw mechanism) for security engagement. This segmentation allows each component to perform its specific function efficiently without unnecessary complexity, while together they provide both simplicity and reliability.
Solution Approach 2:
The grain is pre-positioned on the bar at a location that will engage with the hook's flange during normal installation. This preliminary positioning ensures that when the hook is attached, the grain is already in place to prevent accidental unhooking, eliminating the need for additional security steps later.
2Reliability
If a secure release-preventing system is implemented to prevent accidental unhooking, then the reliability improves, but the ease of operation deteriorates because the cupboard becomes difficult to remove when needed
Solution Approach 1:
The grain acts as an intermediary security mechanism between the hook and the bar. It provides the necessary security against accidental unhooking while allowing controlled removal through its manual operation. The grain's threaded design creates friction that prevents accidental disengagement but allows intentional removal with moderate effort.
Solution Approach 2:
The grain's threaded mechanism allows the user to secure and release the cupboard using simple manual rotation, without requiring special tools or complex procedures. The system serves itself by using the basic screw principle that is universally understood and easily operable.
3Reliability
If the grain is positioned close to the hook's tooth to provide effective blocking, then the reliability of preventing unhooking improves, but the ease of manufacture deteriorates due to more precise positioning requirements
Solution Approach 1:
The flange is provided with a localized threaded seat at the specific position where the grain needs to engage. This local threading provides the precise positioning function exactly where needed, while the rest of the components can be manufactured with standard tolerances. The threaded seat acts as a localized feature that ensures correct grain positioning without requiring high precision throughout the entire assembly.
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
Effectively prevents accidental unhooking of wall cupboards from the wall support, ensuring safety while allowing for easy disassembly when needed, aligning with evolving safety regulations and simplifying the assembly process.
Implementation Method 1
a grain (51) provided with a threaded section (52), a tip (53), and a shaped head (54) for a manoeuvring tool, for example a screw-driver (55), to be screwed into a threaded seat (56)
Implementation Method 2
where there are a series of elastically yielding elements (103), said elements (103) being positioned above the section (96) of the bar, coplanar and at a certain distance from it
Data Source
Figure 1~10
Figure 3~4
Figure 5~6
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 means of a hook (41, 73, 91, 125, 162) of a cupboard holding device (40, 90, 124, 163) characterized in that between said hook (41, 73, 91, 125, 162) and said support (47, 76, 97, 115, 155) there are unlacing means (51, 79, 101, 121, 160, 167) of reciprocal tie.