Cam Clamping System for Window Profile Hinge Fixation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in fixing hinges to aluminum window or door profiles with concealed attachment is exacerbated by the insulation requirements, which restrict the use of traditional push-in tightening elements due to the increased width of the plastic lath, leading to instability and insufficient space for bolt insertion, particularly in heavier windows and doors.
Innovation Solution
The method involves creating an opening in a reinforced zone of the profile to maintain structural rigidity, allowing a bolt and cam system to be inserted, where the cam is tilted to engage with the rib, providing additional stability and enabling secure fastening of hinges by absorbing forces perpendicular to the insertion direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the plastic lath is made constantly wider to improve insulation characteristics, then thermal insulation is improved, but the stability of the plastic lath deteriorates and space for bolt insertion is reduced
Solution Approach 1:
The invention divides the profile into inner and outer profiles with a cavity between them, and inserts a strip consisting of two plastic laths into the cavity. This segmentation allows the plastic lath to be positioned within the cavity rather than spanning the entire profile width, maintaining insulation performance while improving structural stability through the cavity's geometric constraints.
Solution Approach 2:
The strip with plastic laths is nested within the cavity formed by the inner and outer profiles. The plastic laths are inserted into the cavity space, allowing them to provide insulation without compromising the overall structural integrity of the profile assembly. The cavity acts as a container that stabilizes the plastic laths.
2Temperature
If the plastic lath is made constantly wider to improve insulation characteristics, then thermal insulation is improved, but the space available for tapped hole and bolt insertion deteriorates
Solution Approach 1:
By segmenting the profile into inner and outer components with a cavity, the invention creates dedicated spaces: the cavity accommodates the plastic laths for insulation, while the inner profile provides separate access openings for bolt insertion. This segmentation resolves the space conflict by allocating different regions for different functions.
Solution Approach 2:
The invention moves the insulation function to a different spatial dimension by placing plastic laths within the cavity between inner and outer profiles, rather than having them occupy the entire cross-sectional width. This dimensional reorganization preserves bolt insertion space in the outer profile while maintaining insulation performance through the cavity's depth.
3Strength
If screws are provided at a sufficiently spaced distance from the line of force to achieve rigid fastening, then fastening strength is improved, but the distance from the hinge pin to the connection point increases, reducing fastening effectiveness
Solution Approach 1:
The invention applies local reinforcement by providing an inner profile with increased wall thickness or structural reinforcement at the specific location where bolts are inserted. This local quality enhancement allows bolts to be positioned closer to the hinge pin while still achieving sufficient fastening strength, resolving the conflict between connection distance and fastening effectiveness.
4Ease of operation
If traditional push-in tightening elements are used, then installation is simplified, but they cannot be used when the cavity is filled with foam, reducing adaptability
Solution Approach 1:
The invention introduces a strip with plastic laths as an intermediary component that is inserted into the cavity before foam injection. This strip serves as a mediator that allows tightening elements to be installed through the inner profile's opening, bypassing the need to push elements through foam-filled cavities. The strip creates a functional pathway that maintains installation ease while adapting to foam-filled profile configurations.
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 solution ensures rigid and stable mounting of hinges by utilizing the profile's inherent rigidity, effectively addressing the limitations of traditional fastening methods in insulated aluminum profiles, particularly for heavier doors and windows.
Implementation Method 1
the cam is tilted to engage with the rib, providing additional stability and enabling secure fastening of hinges by absorbing forces perpendicular to the insertion direction
Implementation Method 2
This solution ensures rigid and stable mounting of hinges by utilizing the profile's inherent rigidity
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Method for fixing hinges and other metal work to window or door profiles, characterised in that the method comprises the steps of providing openings (19) such as bore holes in the profile (1,2), at least partly introducing a clamping system (8) through the aforesaid opening (19), and moving and/or tilting at least a part of the clamping system (8), crosswise to the feeding direction, such that this moved and/or tilted part of the clamping system (8) reaches up against at least an inner rib (15) or another reinforced zone inside the profile (1,2).