Adjustable Hinge Strip Assembly for Fast Door Alignment

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Solution Overview

Problem

Existing hinge systems require cumbersome assembly, are prone to damage during adjustment, and lack efficient, space-saving, and quick adjustment capabilities, especially for doors and gates.

Innovation Solution

A hinge part with an elongated hole in the mounting leg and a material recess on the contact surface, allowing for quick adjustment using a mounting aid, and an adjusting element within a chamber for multi-directional adjustment, including a system of adjusting screws for precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If adjusting screws are used to adjust the hinge leaf relative to the hinge mounting body, then adjustment capability is achieved, but the force required to turn the screw increases and adjustment becomes time-consuming

Engineering Contradiction:
Improveadjustment effortVSAvoidadjustment time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces the traditional screw-thread mechanical adjustment system with a direct sliding mechanism. The hinge leaf can be adjusted by sliding it along the mounting body without requiring rotational force to engage threads, thereby eliminating the high torque requirement and time-consuming nature of screw adjustment while maintaining precise positioning capability.

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

2Adaptability or versatility

If multiple adjusting screws are arranged to enable multi-directional adjustment, then adjustment versatility is improved, but the space requirement increases

Engineering Contradiction:
Improvemulti-directional adjustment capabilityVSAvoidspace requirement at mounting body
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent combines multiple adjustment directions into a single integrated sliding mechanism rather than using separate adjusting screws for each direction. The hinge leaf is designed with sliding surfaces that allow simultaneous adjustment in multiple directions (vertical, horizontal, and angular) through a unified structure, significantly reducing the space required at the mounting body while maintaining full multi-directional adjustment capability.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP3704337B1Strip part
Publication Date: 2026.02.25 HAHN GMBH & CO KG
  • EP3704337B1 patent drawingFigure 1
  • EP3704337B1 patent drawingFigure 2a
  • EP3704337B1 patent drawingFigure 2b

AI summary

The invention relates to a strip part (100) to be fastened and adjusted on a frame profile or leaf profile (5), comprising a strip lobe (1), which has at least one hinge part (10) defining a pivot axis (S) and a strip fastening limb (11) adjoining the hinge part, and comprising a strip fastening body (2), which can be secured in a fastening plane (E) to a frame profile or leaf profile (5). In order to fasten the strip lobe (1) to the strip fastening body (2), a fastening device (20) having a contact face (60) is provided, against which the strip fastening limb (11) can be placed by means of a corresponding mating contact face (16) and can be fastened indirectly or directly to the strip fastening body (2). According to the invention, material recesses (61, 17) corresponding to one another are formed in the region of the contact face (60) and the mating contact face (16), into which recesses a mounting aid (4) for levering or displacing the strip lobe (1) relative to the strip fastening body (2) can be inserted.