Double Leaf Adhesive Hinge for 360 Rotation

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Solution Overview

Problem

Existing hinges for fixtures, shutters, and hatches are labor-intensive to assemble, limited to 360° rotation, and incompatible with lightweight materials like expanded polystyrene and hollow core panels, which do not accept traditional fastening methods.

Innovation Solution

A double leaf adhesive hinge with alternating 'Z' shaped folds allows for 360° rotation without the need for separate assembly components, using a single or multiple bodies made of adhesive material that can be applied directly to the elements, enabling intuitive assembly without tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If traditional hinges use separate containment body, pivot-holding unit, and adjusting elements, then the hinge provides stable mechanical connection, but the assembly becomes time and labor intensive

Engineering Contradiction:
Improveassembly simplicityVSAvoidnumber of separate components
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges the containment body, pivot-holding unit, and adjusting elements into a single integrated hinge body. The hinge consists of a single piece with an interior defining a seat for the pivot-holding unit, eliminating the need for separate assembly steps and reducing installation time while maintaining structural stability.

Inventive Principle:
Principle #5Merging (Combining)

2Adaptability or versatility

If traditional hinges use standard mechanical structure, then the hinge provides secure fastening, but rotation is limited and cannot reach 360°

Engineering Contradiction:
Improverotation rangeVSAvoidmechanical structure limitations
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic hinge structure where the pivot-holding unit can rotate freely within the seat defined in the containment body. The mechanical design allows continuous rotation through 360° in both clockwise and counterclockwise directions, enabling full circular movement while maintaining secure fastening through the integrated structure.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If traditional hinges use screws, nuts or pins for fastening, then the hinge provides strong mechanical connection, but it is incompatible with lightweight thickened materials like expanded polystyrene and hollow core panels

Engineering Contradiction:
Improvematerial compatibilityVSAvoidfastening strength
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The patent replaces traditional mechanical fastening methods (screws, nuts, pins) with an adhesive bonding system. The hinge body incorporates adhesive application surfaces that bond directly to lightweight materials such as expanded polystyrene and hollow core panels, providing secure attachment without requiring mechanical penetration that would damage these delicate substrates.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 hinge simplifies assembly, supports 360° rotation, and is compatible with lightweight materials by using an adhesive system that securely engages and holds elements in place without mechanical fasteners, reducing assembly time and cost.

Implementation Method 1

a single body or a plurality of bodies... made of an adhesive material... The adhesive system has the double function of gripping (adhesively engage) the element and also holding it in position

Methodology Applied
Scientific EffectAdhesion: Adhesive

Data Source

PatentUS12116812B2Double leaf adhesive hinge
Publication Date: 2024.10.15 FAVONI ANDREA
  • US12116812B2 patent drawing
  • US12116812B2 patent drawing
  • US12116812B2 patent drawing

AI summary

The object of the present invention is an improved double leaf adhesive hinge for fixtures, shutters, hatches or similar formed by one or more bodies and capable to operate a rotational join between two elements by using a series of alternated folds on the front and back of the element itself, as an alternative to the standard rotating pivots or hinges, operative in order to enable to open or rotate said elements even up to 360°. Preferably, the single body is shaped and is applicable by means of a simple adhesive application, to one or more angular or linear sides, in order to enable to join fixtures and shutters or similar with specific rotation functions of the same. The elements joined by the hinge according to the invention rotate by the alternation of one or more pairs of hinges, formed by folds, positioned one opposite to the other thereby forming a double Z (Zed) system translated, and not overlapped.