Checker Nut Integrating Locking and Anchoring for Concrete Rods
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Solution Overview
Problem
Current fastening systems for concrete reinforcement, such as those using hex nuts, often fail to ensure complete thread engagement and secure locking of anchor bodies on threaded rods, particularly during concrete vibration, leading to potential displacement and instability.
Innovation Solution
A checker nut design featuring a main body with a central female thread and radial projections that provide leverage for tightening, a stop member for precise positioning, and a deformable material to develop tension between the thread and bearing surface, replacing the secondary hex nut and ensuring complete thread engagement and secure locking of anchor bodies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secondary hex nut is used to lock the anchor body, then the thread engagement can be secured, but the device complexity increases and the ease of operation decreases
Solution Approach 1:
The patent combines the locking function and the anchor body into a single integrated checker nut structure. The checker nut incorporates both the anchoring threads that engage with the rod and the locking mechanism that secures the anchor body, eliminating the need for separate secondary hex nuts while maintaining secure thread engagement.
Solution Approach 2:
The checker nut is designed to perform multiple functions simultaneously: it provides thread engagement with the rod, locks the anchor body in place, and ensures complete thread passage. This multi-functional design replaces what previously required multiple separate components, simplifying the overall assembly.
2Ease of operation
If the female thread is positioned closer to the top bearing surface, then the anchor body can be tightened more easily, but complete thread engagement cannot be ensured
Solution Approach 1:
The patent addresses the spatial conflict by designing the checker nut with sufficient overall height to accommodate both the optimally positioned female thread (for easy tightening) and the required thread engagement length. The dimensional design ensures that the female thread is positioned at the correct distance from the top bearing surface while maintaining complete thread engagement capability.
3Stability of the object's composition
If the anchor body is locked securely against displacement, then the stability of the reinforcement assembly improves, but the ease of manufacture decreases
Solution Approach 1:
The checker nut is designed with distinct functional segments: the female thread portion for rod engagement, the top bearing surface for anchor body contact, and the main body portion providing structural support. This segmentation allows each feature to be optimized independently while maintaining overall manufacturing simplicity through conventional machining processes.
Data Source
AI summary
A checker nut for locking a threaded body to a threaded rod includes a main body portion having a bearing surface for engaging a threaded body; the main body portion including a central opening with an inside surface; and a single female thread disposed on the inside surface and extending therefrom, the female thread for cooperating with threads on a threaded rod.