Single-axis hinge height adjustment mechanism

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Solution Overview

Problem

Multi-joint hinges have complex constructions due to three-dimensional adjustment mechanisms, limiting their use in cupboards and increasing structural height, while single-axis hinges face challenges in manufacturing cost and stability when adjusting door positions.

Innovation Solution

The height adjustment device is integrated into the hinge cup of the door-side hinge part, allowing manual or assisted adjustment without altering the hinge axis position, and lateral adjustments are implemented to prevent gaps between hinge elements and the door leaf, maintaining a flat body-side hinge design.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If height adjustment device is arranged in door-side hinge part, then height adjustment is enabled, but manufacturing cost increases and stability decreases

Engineering Contradiction:

Improveheight adjustment capabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The height adjustment device is segmented into modular components: a height adjustment element with threaded rod and adjusting nut, separate from the hinge cup and door-side hinge part. This modular segmentation allows independent manufacturing of each component using standard machining processes, reducing overall manufacturing complexity and cost while maintaining the height adjustment capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connecting part serves as an intermediary element that connects the door-side hinge part to the hinge cup. It incorporates the height adjustment element and provides a stable mounting interface, distributing mechanical loads through the connecting part rather than directly through the hinge cup or door leaf, thereby maintaining stability while enabling adjustment.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of manufacture

If body-side hinge part is made flat, then ease of manufacture improves, but structural height must be limited

Engineering Contradiction:

Improveflat design simplicityVSAvoidstructural height

Core Design Contradiction:

Ease of manufactureVSLength of stationary object

Solution Approach 1:

The hinge system transitions from a two-dimensional flat configuration to a three-dimensional articulated structure through the connecting part that pivots relative to the body-side hinge part. This dimensional change allows the body-side hinge part to remain flat and simple for easy manufacturing, while the connecting part provides the necessary structural height and articulation movement in the third dimension.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If lateral adjustment is implemented in door-side hinge part, then adjustability improves, but gap creation between hinge elements and door leaf occurs

Engineering Contradiction:

Improvelateral adjustment capabilityVSAvoidgap prevention

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The lateral adjustment mechanism replaces traditional mechanical sliding or rotating adjustment systems with an eccentric-based mechanical system. The eccentric element converts rotational motion into lateral displacement of the connecting part, enabling smooth lateral adjustment while maintaining continuous contact between hinge elements and the door leaf, thus preventing gaps while achieving adjustability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP2287427B1Single-axis hinge

Publication Date: 2020.07.08 PRAMETA

Figure 1~2
Figure 3
Figure 4

AI summary

Hinge (1) has a hinge portion (4) which can be pre-mounted on a furniture carcass (2). The hinge portion (6) mounted on the door has a hinge cup (8) in which the height adjustment means are arranged, and at least one locking element for immobilizing the door wing (3) in relation to the furniture carcass at the set vertical position of the door wing. An independent claim is also included for the hinge cup.