Rivet With Hook Portion For Pivoting Piece Detection
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Solution Overview
Problem
Existing rivet technologies do not provide a clear indication that the pivoting pieces have pivoted outward, leading to potential incomplete fixation due to reliance on projection engagement rather than actual pivoting state verification.
Innovation Solution
Incorporating a hook portion on the core member that moves past projections on the pivoting pieces, causing a recognizable resistance change and providing a clicking sensation when the pivoting pieces are fixed in an outward position, along with protective walls to prevent unintended reversal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the core member is inserted into the sleeve and projections engage with recesses, then the core member is restricted from escaping and pivoting pieces are prevented from pivoting inward, but it cannot be determined whether the pivoting pieces have actually pivoted outward
Solution Approach 1:
The patent introduces a detection mechanism that provides feedback on the pivoting state of the pivoting pieces. The core member includes a detection portion that interacts with the pivoting pieces to indicate their state, allowing the operator to verify whether the pivoting pieces have properly pivoted outward during the fixation process.
Solution Approach 2:
The patent introduces an intermediary detection mechanism between the core member and the operator. This intermediary system translates the mechanical state of the pivoting pieces into a detectable signal or indication, allowing indirect observation of the pivoting state without requiring direct visual inspection of the pivoting pieces themselves.
2Device complexity
If the rivet structure is simplified to rely only on projection engagement, then the device complexity is reduced, but the ability to verify proper fixation is lost
Solution Approach 1:
The patent merges the fixation function and the detection function into a single integrated rivet structure. The core member simultaneously performs the function of restricting escape through projection engagement and the function of detecting pivoting state through its detection portion, combining multiple functions without requiring separate independent systems.
Solution Approach 2:
The core member is designed with multi-functionality, serving both as a restriction element (through projections engaging with recesses) and as a detection element (through the detection portion that indicates pivoting state). This universal design allows a single component to fulfill multiple roles in the fixation process.
Data Source
AI summary
A rivet includes a sleeve, which has a flange, and a core member, which is inserted into the sleeve. The distal end of the sleeve is coupled to a plurality of pivoting pieces via thin hinges. By inserting the core member into the sleeve, each pivoting piece is pushed against the core member to pivot outward, and a laminated member, which is located between the flange and each pivoting piece, is fixed. A projection is arranged on the basal end surface of each pivoting piece. A hook portion is arranged on the head of the core member to project radially outward of the core member. When the core member is inserted into the sleeve, the hook portion of the core member moves past the projection of each pivoting piece in an outwardly pivoted state to fix the pivoting piece.