Inclined Wing Fixing Square for T-Groove Frames
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Solution Overview
Problem
Existing fixing squares for 'T'-shaped frames used in door and window frames are difficult to mount and dismount, and they obstruct the positioning of glass-stops when two profiles are connected, preventing consecutive adjacent placement of glass-stops.
Innovation Solution
A fixing square with mutually inclined wings, each having an eccentric locking mechanism that increases in width to securely fit within the 'T'-shaped grooves, allowing for simplified mounting and dismounting, and enabling the placement of glass-stops in consecutive adjacent positions by adjusting the wing dimensions and incorporating self-drilling screws for additional fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a fixing square is inserted into the T-shaped groove to connect two profiles, then the profiles are securely fixed together, but the fixing square obstructs the placement of glass-stops in consecutive adjacent positions
Solution Approach 1:
The fixing square is divided into two separate wings that can be inserted into the T-shaped groove at different positions. The first wing is inserted before the glass-stop, and the second wing is inserted after the glass-stop, allowing both the fixation function and the glass-stop placement function to be fulfilled without interference
Solution Approach 2:
The first wing of the fixing square is inserted into the T-shaped groove before the glass-stop is placed. This preliminary insertion creates a reference position and allows the glass-stop to be positioned in the correct location before the second wing is inserted to complete the fixation
2Strength
If the fixing square is designed to fit tightly within the T-shaped groove for secure fixation, then the connection strength is improved, but the mounting and dismounting process becomes difficult
Solution Approach 1:
The fixing square incorporates an expansion mechanism where the wings can be expanded or contracted. During mounting, the wings are in a contracted state allowing easy insertion into the T-shaped groove. Once positioned, the wings are expanded to fill the groove completely, providing strong fixation. For dismounting, the wings are contracted again to facilitate removal
Solution Approach 2:
The dimensions of the fixing square wings are made variable through the expansion mechanism. The wings can change their width parameter between a smaller dimension for insertion and a larger dimension for secure fixation, allowing the same component to satisfy both ease of operation and connection strength requirements
3Stability of the object's composition
If the fixing square occupies the entire width of the T-shaped groove to ensure secure fixation, then the connection stability is improved, but the glass-stops cannot be positioned in consecutive adjacent positions
Solution Approach 1:
The fixing square is segmented into two separate wings that occupy different portions of the T-shaped groove. This segmentation allows the groove to be divided into three functional zones: the first wing insertion zone, the glass-stop placement zone, and the second wing insertion zone, enabling both stable fixation and proper glass-stop positioning
Solution Approach 2:
The fixing square utilizes the longitudinal dimension of the T-shaped groove by inserting wings at different positions along the groove's length. This dimensional approach allows the fixing square to provide stable fixation through distributed anchoring while leaving the transverse dimension available for glass-stop placement
Data Source
Figure 1
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AI summary
A frame (100) comprises: a first profile (P1) with a "T"-shaped longitudinal groove (S1) comprising a longitudinal opening (1 a), a second profile (P2) with a first "T"-shaped longitudinal groove (S2) comprising a longitudinal opening (2a); a fixing square (3; 300) comprising a first wing (31) and a second wing (32) that are inclined and respectively disposed inside the "T"-shaped groove (S1) of the first profile (P1) and inside the first "T"-shaped groove (S2) of the second profile (P2); at least a wing (31,32) of the fixing square (3; 300) having a lower width (L31, L32) than the width (L1 a, L2a) of the longitudinal opening (1 a,2a) of the "T"-shaped groove (S1,S2) wherein it is inserted; said at least one wing (31,32) of the fixing square (3; 300) comprising an eccentric locking means (M) configured in such manner to permit the increase of the total width of the wing (31, 32).