Hinge Element Height Adjustment via Grub Screw
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Solution Overview
Problem
Existing hinge elements for interior doors are complex and laborious to use for height adjustment, often requiring removal of the door leaf and risking unintended height changes due to door movement or corrosion.
Innovation Solution
A hinge element with a bolt guide and bolt, where the bolt's guide section is linearly displaceable and adjustable via a grub screw, allowing for height adjustment without rotating the bolt, thus preventing unintended changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional hinge with a fixed bolt is used, then the structure is simple, but height adjustment is complex and laborious requiring door removal
Solution Approach 1:
The bolt is transformed from a fixed component to a dynamically adjustable component through the addition of a guide section that allows linear movement within the bolt guide, enabled by the grub screw mechanism. This dynamic design allows height adjustment without door removal while maintaining structural simplicity.
Solution Approach 2:
The guide section acts as an intermediary element between the bolt and the bolt guide, allowing controlled linear displacement. This intermediary component enables the adjustment function while keeping the overall hinge structure simple and robust.
2Ease of operation
If a threaded pivot pin is used for height adjustment, then adjustment is integrated, but unintended rotation occurs due to door movement or corrosion
Solution Approach 1:
The bolt is segmented into distinct functional sections: a receiving section for hinge element engagement and a guide section for linear displacement. This segmentation prevents rotational movement while enabling controlled height adjustment through the grub screw mechanism.
Solution Approach 2:
The threaded pivot pin mechanism is replaced with a linear displacement system using a grub screw acting on the guide section. This substitution eliminates the risk of unintended rotation while maintaining ease of height adjustment.
3Reliability
If a counterscrew is added to prevent door sinking, then downward movement is prevented, but upward shifting cannot be controlled and adjustment requires counterscrew removal
Solution Approach 1:
The grub screw mechanism serves multiple functions: it enables height adjustment in both upward and downward directions, and maintains stable positioning once adjusted. This multi-functional design replaces the need for separate counterscrews and eliminates the need for removal during adjustment.
4Ease of operation
If the bolt is fixed in the bolt guide, then structural simplicity is maintained, but height adjustment is not possible
Solution Approach 1:
The guide section is designed to be self-contained within the bolt guide, with the grub screw providing both the adjustment mechanism and the positioning function. This self-service design allows height adjustment without requiring external components or complex mounting arrangements.
Data Source
AI summary
The invention relates to a hinge element for fastening to a door frame, comprising a bolt guide (10) and a bolt (20) having a guide section (21) guided in the bolt guide (10) and a receiving section (22) designed to engage a hinge element on the door leaf side. The bolt guide (10) comprises, at least in sections, an internal thread on a side opposite the receiving section (22), into which thread a grub screw (11) is inserted, which is aligned coaxially with the guide section (21). The invention is characterized in that the guide section (21) is mounted in the bolt guide (10) so as to be linearly displaceable, and the grub screw (11) acts on an end face of the guide section (21) such that the position of the guide section (21) in the bolt guide (10) can be changed by rotating the grub screw (11).