Hinge Clamping Jaws for Pinch Mark Reduction
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Solution Overview
Problem
Existing hinges for swing doors face issues such as high local pressure leading to pinch marks and difficulty in adjusting the zero point setting due to uneven force distribution and clamping marks, which can cause the hinge to revert to old angular positions.
Innovation Solution
The hinge design incorporates clamping jaws that distribute force evenly across extensive surfaces, preventing tilting and reducing pinch marks, with a screw connection for fixing the relative position of clamping parts and a spring device for applying force, allowing for adjustable and stable angular positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conical tip clamping element is used to fix the hinge axis element, then the angular position can be fixed, but high local pressure causes pinch marks and tilting
Solution Approach 1:
The clamping element is divided into multiple clamping jaws (typically three) that distribute the clamping force around the hinge axis element. This segmentation allows the force to be applied at multiple points rather than concentrated at a single conical tip, preventing localized damage while maintaining secure fixation of the angular position.
Solution Approach 2:
The clamping jaws are designed with specific surface characteristics and geometries tailored to the local requirements of the hinge axis element. Each jaw has a clamping surface adapted to the contour of the hinge axis element, ensuring optimal contact and force distribution at each local contact point while preventing tilting.
2Reliability
If high clamping force is applied to fix the hinge axis element, then the angular position is secured, but uneven force distribution causes tilting and canting
Solution Approach 1:
The clamping force is segmented into multiple application points through the use of multiple clamping jaws arranged circumferentially around the hinge axis element. This segmentation ensures that the total clamping force is distributed evenly, preventing uneven force distribution that would cause tilting or canting while maintaining reliable angular position fixation.
Solution Approach 2:
The clamping jaws are positioned and dimensioned to create equipotential force distribution around the hinge axis element. By arranging the jaws symmetrically and ensuring equal contact pressure at each jaw, the system achieves uniform force distribution that prevents tilting while maintaining secure clamping.
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
This design significantly reduces the formation of pinch marks and allows for precise adjustment and maintenance of the zero point setting, ensuring even force distribution and stable clamping without sliding into old marks.
Implementation Method 1
a spring device for applying force
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a hinge band (10), in particular for a swing door, with at least one hinge axis element (20), a first band part (12) and a second band part (16), which are connected to each other in a hinge-like manner via the at least one hinge axis element (20), at least one locking arrangement (28) comprising at least one locking device (50) arranged on the second band part (16) with a locking element (52) and at least one locking recess (56) arranged on the hinge axis element (20), wherein the locking device (50) is arranged such that the locking element (52) engages in the locking recess (56) in a locking position and a clamping means (14) for releasably fixing the hinge axis element (20) to the first band part (12), wherein an angular position of the hinge axis element (20) and the locking recess (56) with respect to the first band part (12) is adjustable.The clamping device (14) is provided to have at least one pair of clamping jaws (40, 42; 46, 48) for clamping the joint axis element (20) between these clamping jaws (40, 42; 46, 48), each of the clamping jaws (40, 42; 46, 48) having a clamping surface adapted to the contour of the joint axis element (20).