C-Profile Door Hinge With Adjustable Stop Mechanism
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Solution Overview
Problem
Existing hinges for C-shaped grooves in doors and windows require complex manufacturing and may not ensure complete engagement of projections in undercuts, leading to potential detachment and tilting issues.
Innovation Solution
A hinge design featuring a stop mechanism that adjusts externally to ensure the inclined surface moves away from the fastening part, providing additional force on the clamping part to press it against the groove bottom, and using a stud screw to enhance clamping forces, preventing tilting and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the opening is enlarged transversely to the longitudinal extent of the groove in the form of an oblong hole, then the clamping part can pivot about the tilting axis when the clamping screw is tightened, but this can lead to the hinge part tilting and detachment
Solution Approach 1:
The stop acts as an intermediary element between the fastening part and the inclined surface. It mediates the pivoting motion by providing a controlled contact point that allows rotation while preventing excessive movement that would cause tilting or detachment of the hinge part.
Solution Approach 2:
The stop can be adjusted from the outside to change its position relative to the inclined surface. By tightening the stop, the distance between the stop and the inclined surface is reduced, which controls the degree of pivoting and prevents unwanted tilting while maintaining the necessary clamping capability.
2Force
If the inclined surface is inclined towards the bottom of the groove forming an angle of about 45°, then a force component is exerted on the clamping part directed towards the second undercut, but the shape of the fastening part and clamping part increases manufacturing effort
Solution Approach 1:
The hinge is divided into separate functional parts: the fastening part with the inclined surface, the stop with adjustment capability, and the clamping part with the projection. This segmentation allows each component to be manufactured separately with simpler geometries while achieving the desired force component through their assembly and interaction.
Solution Approach 2:
The stop is designed to be adjustable from the outside, transforming a static structure into a dynamic system. This allows the geometry and positioning of the stop relative to the inclined surface to be modified without changing the fundamental shape of the fastening part or clamping part, maintaining manufacturing simplicity while optimizing the force component.
3Reliability
If the clamping screw passes through the fastening part with only a small amount of play, then the hinge cannot be undesirably detached, but the adjustment capability is reduced
Solution Approach 1:
The stop serves as an adjustable intermediary that provides the necessary play or clearance for the clamping screw to pass through the fastening part. This allows the screw to move freely within the small amount of play for security, while the stop's adjustability compensates for any clearance issues and maintains reliable attachment.
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 design achieves high holding forces with simplified manufacturing and assembly, ensuring reliable engagement and preventing unwanted detachment or tilting, while allowing for easy adjustment and reduced manufacturing complexity.
Implementation Method 1
the inclined surface is inclined towards the bottom of the groove, preferably forming an angle of about 45° with it, a force component is also exerted on the clamping part when the stop is tightened, which is directed towards the second undercut
Implementation Method 2
when the clamping screw is tightened, the clamping part can pivot about the tilting axis defined by the projection, which means that the projection pointing downwards of the clamping part is pressed against the bottom of the groove
Data Source
Figure 1~2
Figure 3
Figure 4a~4c
AI summary
The invention relates to a strip (100, 200) for doors, windows and the like for fastening to a notch (8) in a leaf or a frame, said notch being approximately C-shaped in cross section and having first and second undercuts (11, 12) that are approximately opposite one another, said strip comprising a fastening part (14) with a first process (19) that can be engaged into a first undercut (11), a clamping part (20) having a second process (22) that can be engaged into a second undercut (12), and comprising at least one clamping screw (17) that can be threaded into a threaded hole (21) provided in the clamping part (20), said clamping screw passing through the fastening part (14) in a penetration (16), and comprising an inclined surface (23) provided at the clamping part (20) and supported on the fastening part (14) when the clamping screw (17) is tightened. A stop (26) is provided which acts between the fastening part (14) and the inclined surface (23) and which can be adjusted from the outside when the processes (19, 22) are engaged into the undercuts (11, 12).