Threaded Member with Sink Section for Torque Detection
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Solution Overview
Problem
Conventional threaded members lack sufficient strain sensitivity to precisely detect tightening torque, which can lead to over-tightening or under-tightening issues in critical applications, compromising structural integrity and safety.
Innovation Solution
A threaded member design featuring a sink section between the head and threaded rod sections, combined with a strain sensor, allows for enhanced deformation and strain detection, enabling precise measurement of tightening torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional solid head section is used, then the structural strength is maintained, but the strain sensitivity is insufficient for precise tightening torque detection
Solution Approach 1:
The head section is segmented into a solid portion and a sink section (recessed area). This segmentation allows the head to have both strong structural support from the solid portion and enhanced strain sensitivity from the sink section where the strain sensor is positioned, resolving the contradiction between strength and measurement precision.
Solution Approach 2:
The sink section creates a localized area with different mechanical properties (higher strain concentration) compared to the solid head portion. This local quality change enables the strain sensor to detect tightening torque more precisely while the overall head structure maintains its strength through the solid portions.
2Measurement precision
If the head section deformation is small, then the structural integrity is maintained, but the sensor cannot detect the tightening torque precisely
Solution Approach 1:
By segmenting the head into solid and sink sections, the design allows controlled deformation in the sink section while maintaining overall head integrity. The strain sensor positioned in the sink section detects the localized strain, achieving precise measurement without compromising structural stability.
Solution Approach 2:
The sink section acts as an intermediary that amplifies the deformation effect. It mediates between the applied tightening force and the strain sensor, creating sufficient strain signal for precise detection while the solid head portions maintain structural integrity and stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The enhanced strain sensitivity and precise detection of tightening torque values ensure safety by accurately monitoring and recording the tightening force, preventing structural damage and ensuring secure operations in large-scale or high-stress environments.
Implementation Method 1
a strain sensor (such as a strain gauge or a tension gauge) can immediately and precisely detect the strain extent of the threaded member
Data Source
AI summary
A threaded member capable of detecting tightening force includes a head section, a threaded rod section and at least one strain sensor. The head section has a bottom face, a skirt section and a receiving space. The threaded rod section is disposed under the bottom face of the head section. A sink section is formed on the bottom face of the head section. The strain sensor is disposed on the bottom face of the head section and positioned in the receiving space. Due to the sink section, when the head section is strained and deformed, the strain sensor can sensitively and precisely detect the strain capacity of the head section and provide the tightening force of the threaded member for a user to more precisely tighten the threaded member.