Window Door Hinge with Nested Protective Housing

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Solution Overview

Problem

Existing hinging elements for window or door frames expose terminal or intermediate portions of attachment elements and surrounding structures when the frames are fully open, leading to unsightly issues and potential operational failures due to dirt infiltration and structural weaknesses.

Innovation Solution

A hinging element comprising a cylindrical body with a box-shaped female housing and a male box-shaped element that covers the attachment elements, ensuring they remain hidden and protected, even when the window or door frame is fully open.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional hinging elements are used with attachment elements exposed, then the structure is simple and easy to manufacture, but the exposed portions become unsightly and vulnerable to dirt infiltration

Engineering Contradiction:

Improvesimplicity of hinging element constructionVSAvoidexposure to dirt and aesthetic defects

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies nesting by placing the attachment elements inside a protective housing structure. The housing contains the attachment elements (pins, screws, or other connection components) within its interior space, shielding them from external exposure while maintaining the simplicity of the overall hinging element design.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Device complexity

If attachment elements are fully exposed, then the hinging element structure is simple, but structural solidity and strength are reduced in the connection zone

Engineering Contradiction:

Improvesimplicity of hinging element structureVSAvoidstructural solidity of connection zone

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

The housing structure nests the attachment elements within its interior, providing enclosures that strengthen the connection zone. This nested configuration protects the attachment elements from mechanical damage and environmental factors while maintaining structural integrity.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The housing acts as a protective shell that encloses the attachment elements. This shell structure provides structural reinforcement to the connection zone, enhancing strength and rigidity while protecting the internal components.

Inventive Principle:

Principle #30Flexible shells and thin films

3Ease of manufacture

If attachment elements are exposed at maximum opening position, then the hinging element is simple to manufacture, but terminal portions become exposed and vulnerable

Engineering Contradiction:

Improveease of manufacturing hinging elementVSAvoidprotection of attachment elements

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The housing provides a nested protective environment that accommodates attachment elements in all positions, including the maximum opening position. This ensures that terminal and intermediate portions of attachment elements remain protected from exposure and damage throughout the range of motion.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentEP4361389B1Hinging element for window or door frames, or suchlike

Publication Date: 2025.05.28 OTLAV

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AI summary

Hinging element (10a, 10b, 10c) for window or door frames, or suchlike, comprising a cylindrical body (11a, 11b, 11c) directed along a hinging axis (Y) and a plurality of attachment elements (12, 14) for connection with a structure (15 a, 15b) of a window or door frame (16).