Angular Fitting Rotary Claw for Undercut Profile Groove Assembly
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Solution Overview
Problem
The existing angular fittings for window assemblies, particularly those with undercut profile grooves, require complex and labor-intensive assembly processes, often necessitating multiple people to align and secure the sash to the frame, which is inefficient and not adaptable to various profile dimensions.
Innovation Solution
The introduction of a rotary claw mechanism on the anchoring plate with a U-shaped profiled edge that grips the profile groove, allowing for adjustable mounting via a bayonet connection and enabling early weight introduction to relieve assembly forces, simplifying the alignment and securing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional clamping fittings with horizontal and vertical legs are used for anchoring in undercut profile grooves, then secure fixation is achieved, but assembly requires multiple people and is labor-intensive
Solution Approach 1:
The fitting is divided into a clamping part with a clamping leg for the horizontal profile groove and an anchoring part with an anchoring leg for the vertical profile groove. This segmentation allows each part to be optimized independently and simplifies the assembly process by separating the clamping and anchoring functions.
Solution Approach 2:
Instead of requiring the sash to be manually positioned and aligned by multiple people before fastening, the invention allows the fitting to be pre-assembled on the sash and then attached to the frame by simply inserting the legs into the profile grooves and tightening the clamping screws. The frame receives the sash weight during assembly, inverting the traditional approach where the sash actively engages with the frame.
2Reliability
If adjustable clamping screws are used to secure the fitting in the profile groove, then reliable fixation is achieved, but assembly time increases due to multiple adjustment steps
Solution Approach 1:
The clamping screws are pre-positioned in the clamping part with their clamping direction predetermined. The clamping leg is designed with a specific geometry that guides the insertion into the profile groove and automatically positions the screws for optimal clamping. This preliminary configuration eliminates the need for complex adjustments during assembly.
Solution Approach 2:
The fitting design allows the clamping screws to self-adjust during the assembly process. When the clamping leg is inserted into the profile groove and the clamping screw is tightened, the screw automatically positions itself to clamp the groove effectively without requiring manual alignment or multiple adjustment steps by the assembler.
3Strength
If the fitting is designed for exclusive attachment to the frame, then structural integrity is maintained, but adaptability to different profile dimensions is reduced
Solution Approach 1:
The fitting is designed with universal features that allow it to function both as a frame-mounted fitting and as a sash-mounted fitting. The clamping part and anchoring part can be attached to either the frame or the sash depending on the specific application requirements. The profile groove engagement mechanism is adaptable to different groove dimensions while maintaining secure fixation.
Solution Approach 2:
The fitting design allows for parameter adjustments to accommodate different profile dimensions. The clamping leg and anchoring leg can be positioned at different orientations and depths depending on the specific profile groove geometry. The clamping screws can be adjusted to provide optimal clamping force for different groove widths and depths, enabling the same fitting design to work across various profile dimensions.
Data Source
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AI summary
The invention relates to an angular fitting for fastening a frame (1) in a profile groove (14, 20) undercut on both sides, comprising an anchoring plate (16) on a corner angle of the frame (1) and for abutment against the undercut profile groove (20), wherein the anchoring plate (16) engages beneath at least one first limb (15) of the profile groove (14), and ensures abutment against the first limb (15) by means of a clamping piece (13) which lies opposite the first limb (15) and by supporting against the second limb (26). In order to guarantee the simplest possible installation of the wing on the frame, a rotary claw (22) which is arranged on a second angled limb (18) of the anchoring plate (16) and which can be associated with an adjacent frame limb (17) reaches abutment against a first limb (23) of the profile groove (20) of the second frame limb (17) when pivoting in the anchoring plate (16) and engages behind same in the opposite direction to the pivoting-in movement.