Wall Cupboard Hanging Bracket with Shear-Resistant Fixing Elements
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Solution Overview
Problem
Existing hanging brackets for wall cupboards are not always effective, long-lasting, or safe due to shear forces generated when the cupboard is loaded, leading to potential breakages and detachments from the wall.
Innovation Solution
A visible and adjustable hanging-bracket group with a structure that includes a protruding arm, regulation mechanisms for depth and inclination, and a flange with elements resistant to shear stress that collaborate with fixing means to ensure stable anchoring to the cupboard shoulder, preventing rotation and misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional fixing means (self-tapping screws or plastic plugs) are used to attach the hanging bracket to the cupboard shoulder, then the assembly is simple and easy to manufacture, but the connection fails under shear forces when the cupboard is loaded
Solution Approach 1:
The fixing system is divided into two independent elements: a first element (screw or plug) that provides basic anchoring, and a second element (resistant to shear stress) that specifically counteracts shear forces. This segmentation allows each element to be optimized for its specific function while maintaining overall simplicity.
Solution Approach 2:
The fixing means combines two different types of fastening elements with complementary properties - one element for anchoring and one for shear resistance - creating a composite fixing system that leverages the strengths of both elements to withstand combined loading conditions.
2Reliability
If the hanging bracket uses simple fixing means, then the manufacturing is economical and easy, but the fixing is not long-lasting and safe under heavy loads
Solution Approach 1:
The fixing system is divided into two independent elements: a first element (screw or plug) that provides basic anchoring, and a second element (resistant to shear stress) that specifically counteracts shear forces. This segmentation allows each element to be optimized for its specific function while maintaining overall simplicity.
Solution Approach 2:
The two elements work together autonomously - the first element provides anchoring while the second element automatically resists shear forces - creating a self-reinforcing fixing system that requires no additional active components or complex control mechanisms.
3Stability of the object's composition
If conventional hanging brackets are used, then the device complexity is low and assembly is simple, but the bracket rotates and misaligns when the cupboard is loaded
Solution Approach 1:
The anti-rotation function is extracted as a separate element (the second element resistant to shear stress) rather than being integrated into the basic anchoring mechanism. This allows the primary anchoring element to remain simple while the extracted anti-rotation element provides the necessary positional stability.
Solution Approach 2:
The second element is designed to preemptively counteract shear forces and rotation before they can cause misalignment or failure. By providing preliminary resistance to these destabilizing forces, the system maintains stable positioning even when the cupboard is loaded.
Data Source
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AI summary
A visible and adjustable hanging-bracket group (10) for anchoring a wall cupboard (11) to a wall, comprising a structure (16) carrying a protruding arm (14) equipped with a hook (15) suitable for being hooked to a support (50) fixed to said wall, a first and a second regulation mechanism (17,17') of the position in depth and inclination, respectively, of said protruding arm (14), a flange (18) extending from said bearing structure (16) for fixing said hanging bracket (10) to a shoulder (12) of said wall cupboard (11), at least one hole for the passage of fixing means (19) of said hanging bracket (10) to said shoulder (12) being provided in flange (18), said flange (18) also comprises a pair of elements (20) resistant to shear stress protruding from said flange (18) towards said shoulder (12) of said wall cupboard (11), said pair of elements (20) resistant to shear stress collaborating with a pair of fixing means (19) for a stable positioning of said hanging bracket (10) on said shoulder (12) of said wall cupboard (11), each resistance element of said pair of elements (20) resistant to shear stress being arranged in a different position with respect to a relative hole (44) for each fixing means of said pair of fixing means (19), wherein said elements (20) resistant to shear stress are elements in the form of bushings or cylindrical plugs, having a circular section, that extend from said flange (18).