Angular Joint for Hollow Profiles Using Indenting Sheet Metal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing angular connection joints for hollow profile members, particularly in door and window frames, face challenges with imperfect fits, reduced aesthetics, and loosening over time due to inaccurate marking and drilling requirements, and struggle with efficient indentation for larger dimensions.
Innovation Solution
The joint design includes a slide base portion with upwardly bent terminal side surfaces forming sockets for a sheet metal mobile portion with optimized geometrical parameters and a zigzag extension, ensuring effective indentation of chamber walls, and optional use of a mechanical press assembly or additional base raising member for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring activated button means are used to engage into apertures at accurately selected locations, then the joint provides stable connection, but the process of marking and drilling apertures becomes awkward and time consuming with reduced precision
Solution Approach 1:
The joint design allows the profile members to self-align and self-secure through the insertion mechanism. The mobile portion with upwardly extending legs automatically engages with the fixed portion, eliminating the need for pre-marked apertures and manual button activation. The structure self-adjusts to achieve proper alignment and connection.
Solution Approach 2:
The invention removes the complex aperture-marking-and-button-activation process from the assembly. Instead of requiring precise pre-marked locations for spring buttons, the design uses a insertable mobile portion that engages through a simplified insertion mechanism, extracting the complexity from the assembly process.
2Ease of operation
If multiple apertures are opened at accurately selected locations for spring buttons, then the joint can be tightened, but the process leads to imperfect fit and reduced aesthetics due to erroneous alignment
Solution Approach 1:
The joint structure enables self-alignment during insertion. The mobile portion with its upwardly extending legs automatically positions itself relative to the fixed portion, ensuring correct alignment without requiring pre-marked apertures or complex adjustment procedures. The geometry of the interacting surfaces guides proper positioning.
Solution Approach 2:
The design incorporates preliminary geometric features during manufacturing - the upwardly extending legs with indenting edges and the corresponding sockets are pre-formed to guide alignment. This preliminary geometric preparation ensures that when the joint is inserted, the components automatically align correctly without requiring post-assembly adjustment.
3Adaptability or versatility
If the joint is used for hollow profile members of relatively larger dimensions, then the application range increases, but the upwardly bent sections have to extend at a long distance resulting in deficient indentation
Solution Approach 1:
The mobile portion is designed with upwardly extending legs that can dynamically adjust their position and orientation during insertion. The legs are configured to engage with the chamber walls at optimal angles, and the mobile portion can rotate or adjust its orientation to ensure proper indentation contact even for larger profile dimensions.
Solution Approach 2:
The indenting edges are concentrated at specific locations on the upwardly extending legs, rather than distributing force uniformly. This localized indenting action at the tip of the legs ensures effective engagement with the chamber walls, maintaining precise indentation effect regardless of the overall size of the profile members.
4Ease of manufacture
If a single hole is marked and drilled for the bolt, then the cost decreases and assembly is simplified, but the requirement for handily marked and drilled hole increases precision demands
Solution Approach 1:
The single hole for the bolt serves multiple functions: it allows insertion of the mobile portion, enables alignment during assembly, and provides access for tightening. The hole is positioned at a location that is naturally self-aligning during the insertion process, eliminating the need for complex marking and drilling procedures while maintaining ease of assembly.
Data Source
AI summary
Joint for the angular connection of a pair of hollow profile members (50) having an angular configuration corresponding to the angle of the assembled profile members (50) and comprising a slide base portion (2, 2′, 2″), a sheet metal portion (1, 1′) superimposed thereupon and a bolt (5) passing through the sheet metal portion (1, 1′) and screwed into a nut (4) mounted onto the base portion (2, 2′, 2″), wherein tightening of bolt (5) pushes upwardly extending surfaces on either side of portion (1, 1′) whereby their sharp edges indent the walls of the hollow profile members being connected. The indentation and efficient angular connection of the hollow profile members is enhanced through: a) forming of the sharp edges of the sheet metal to align an aberrant edge thereof in an indentation appropriate direction, b) appropriately orienting the sheet metal portion (1, 1′) to comply with a set of predetermined geometrical parameters and c) selectively employing varying embodiments of the slide base portion to obtain rapprochement of the points of indentation of the walls being indented.