Corner Joint with Threaded Adjustment for Profile Adhesion
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Solution Overview
Problem
Existing corner joints for window and door frames face issues with high production costs due to the use of elastic materials for upper elements, which are difficult to work with and require specialized tools, and fail to effectively guide adhesive distribution for secure connections.
Innovation Solution
The corner joint uses non-elastic materials for upper and lower elements with a removable thread mechanism for secure coupling and incorporates a central portion with a 'U'-shaped cavity to guide adhesive distribution, ensuring proper adhesion between profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastic material is used for upper elements, then the upper elements can be fastened to lower elements for secure transportation, but the production cost increases and specialized tools are required
Solution Approach 1:
The patent changes the material parameter from elastic to non-elastic (rigid) material, and changes the fastening mechanism from material elasticity to a mechanical thread connection. This allows secure fastening through the removable thread mechanism between the nut on the upper element and the threaded hole in the lower element, eliminating the need for expensive elastic materials and specialized manufacturing tools.
Solution Approach 2:
The patent employs a simple, inexpensive thread connection mechanism instead of expensive elastic material. The removable thread allows for easy assembly and disassembly without requiring costly specialized materials, making the corner joint more cost-effective while maintaining secure transportation capability.
2Ease of manufacture
If non-elastic material is used for upper elements, then production cost decreases, but the upper elements cannot be securely fastened to lower elements during transportation
Solution Approach 1:
The patent introduces a thread connection mechanism as an intermediary between the upper and lower elements. This mechanical intermediary provides secure fastening capability for non-elastic materials, allowing reliable transportation without requiring expensive elastic materials. The thread connection acts as the mediating mechanism that enables secure attachment.
Solution Approach 2:
The corner joint is divided into separate upper and lower elements that can be independently manufactured and then securely assembled through the thread connection. This segmentation allows each element to be produced using standard, cost-effective processes while maintaining the ability to form a secure, transportable assembly through the removable thread mechanism.
3Ease of operation
If adhesive is applied to the vertex without guidance, then the application process is simple, but the adhesive distribution is uneven and adhesion strength is reduced
Solution Approach 1:
The corner joint structure itself provides the adhesive guidance function through its geometric features. The recessed region and inclined surfaces automatically channel and distribute the adhesive along the vertex during assembly, eliminating the need for separate guidance tools or complex application procedures. The structure serves its own adhesive distribution need.
Solution Approach 2:
The recessed region and inclined surfaces act as geometric intermediaries that mediate between the adhesive application point and the vertex contact area. These features channel the adhesive flow to ensure even distribution along the bonding interface, improving adhesion strength while keeping the application process simple.
Data Source
Figure 1~2
Figure 3
Figure 4~4A
AI summary
A corner joint (1) for fastening two profiles comprises: two wings (3), each of them comprising an upper element (E1) and a lower element (E2), and adjustment means (5) to adjust the distance between the upper elements (E1) and the lower elements (E2) of the two wings (3); the adjustment means (5) comprise: a threaded hole (51) obtained on the upper element (E1) of at least one of the two wings (3); a housing (52) obtained on the lower element (E2) of at least one of the two wings (3) and aligned with the threaded hole (51); a nut (53) screwed into said threaded hole (51) and comprising a tip (54) disposed in the housing (52); the thread of the nut (53) is engaged, in correspondence of the tip (54), in a removable thread (55a) obtained on the lateral wall (55) of the housing (52).