90° Wing Coupling Brace with Complementary Toothing
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Solution Overview
Problem
Existing hinge systems require additional assembly screws or rivets for secure fixation of the articulation lug relative to the fixing lug, which complicates the adjustment and locking process.
Innovation Solution
A 90° coupling device featuring a spider with hollow and raised shapes that allow position adjustment and locking of the fixing lug using a pressure screw, eliminating the need for additional fasteners by utilizing complementary toothing profiles between the spider and the fixing lug.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional assembly screws or rivets are used to secure the articulation lug relative to the fixing lug, then the fixation safety is improved, but the device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines the fixation function and adjustment function into a single needle screw mechanism. The needle screw simultaneously provides clamping force to secure the articulation lug and enables positional adjustment through its threading engagement with the spider body, eliminating the need for separate assembly screws or rivets.
Solution Approach 2:
The needle screw serves multiple functions: it acts as a clamping element to secure the articulation lug, an adjustment mechanism to modify the position, and a locking element to maintain the fixed position. This multi-functional design replaces what would traditionally require multiple separate fasteners.
2Reliability
If additional assembly screws or rivets are used to secure the articulation lug, then the fixation reliability is improved, but the adjustment capability is reduced
Solution Approach 1:
The needle screw mechanism allows the connection between the articulation lug and fixing lug to transition dynamically between a loose state (enabling adjustment) and a clamped state (providing secure fixation). By rotating the needle screw, the user can easily switch between these states, maintaining both adjustability and fixation reliability.
3Device complexity
If a single pressure screw is used to clamp the articulation lug, then the device complexity is reduced, but the fixation security may be compromised
Solution Approach 1:
The needle screw applies clamping force locally at the critical interface between the articulation lug and the spider body. The clamping force is concentrated precisely where needed to secure the articulation lug, maximizing the effectiveness of the single fastener.
Solution Approach 2:
The needle screw has a conical or tapered geometry that allows it to generate significant clamping force through rotational tightening. The conical shape converts rotational motion into axial clamping force, enabling a single screw to achieve secure fixation equivalent to multiple fasteners.
Data Source
Figure 1~4
Figure 2~3
Figure 6~7
AI summary
The device has a coupling brace with a T shaped profiled groove that surrounds a transverse section of a fixation tongue (2). The groove and a part of the section present relief and hollow complementary forms (2g, 3e) such as asperities, for allowing the position adjustment and position blocking of the tongue with respect to the brace under a tightening stress of a cone-point set screw, where the asperities are constituted by tooth. The screw is engaged in the thickness of the brace and cooperated in support on an articulation tongue (1) corresponding to the overlapping of the forms.