Lock Threaded Assembly With Elastic Engagement Member
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Solution Overview
Problem
Bolt and nut combinations tend to loosen in highly vibrating or high-temperature environments due to inadequate fastening mechanisms.
Innovation Solution
A lock threaded assembly featuring a bolt with a threaded shank and grooves, a nut with troughs, and an elongated elastic engagement member that elastically locks the bolt and nut by aligning and engaging with the grooves and troughs, preventing loosening through elastic expansion and contraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bolt and nut combination is used, then the structure is simple and easy to manufacture, but the fastening reliability deteriorates in highly vibrating or high temperature environments
Solution Approach 1:
An engagement member is introduced as an intermediary component between the bolt and nut. This engagement member includes a received section that fits into a groove on the bolt and a securing section that engages with the nut, creating a mechanical lock that prevents loosening in vibrating or high-temperature environments without significantly complicating the overall structure
Solution Approach 2:
The engagement member is designed as an elastic component that can flexibly deform during assembly and operation. The elastic material allows the securing section to engage with the nut's groove while maintaining a reliable connection under thermal expansion and vibration conditions
2Strength
If resilient urging devices are added to increase fastening, then the fastening force is improved, but the device complexity increases and loosening may still occur in extreme environments
Solution Approach 1:
The engagement member utilizes the elastic deformation of the bolt's groove and the nut's groove during assembly to automatically engage and lock the components. The elastic recovery force of the engagement member provides continuous urging force without requiring additional resilient components, achieving self-service locking
Solution Approach 2:
The engagement member combines multiple functions into a single component: it provides mechanical locking through the groove engagement, maintains fastening force through elastic recovery, and prevents loosening through the interlocking geometry. This merges the functions of urging devices and locking mechanisms into one integrated element
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
Enhances screw-connection strength and prevents loosening in high-frequency vibration, high voltage, or high heat environments, ensuring secure fastening of clamped components.
Implementation Method 1
an elongated elastic strip body having a securing section and a received section, the securing section and the received section being able to elastically get closer to each other or move away from each other
Data Source
AI summary
A lock threaded assembly includes a bolt including a shank formed with a bolt head and having a threaded portion; at least one groove formed on the threaded portion; a nut including a threaded hole configured to secure to the threaded portion of the bolt; at least one trough formed on the threaded hole; and at least one engagement member being an elongated elastic strip body having a securing section and a received section, the securing section and the received section being able to elastically get closer to each other or move away from each other. When the groove is not aligned with the trough, the bolt and the nut are not locked by the engagement member; when the groove is aligned with the trough, the bolt and the nut are elastically locked by the engagement member.