Nut With Deformable Pressing Portion for Vibration Resistance
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Solution Overview
Problem
Existing nuts tend to loosen during vibrations in mechanical assemblies, leading to potential damage or safety hazards, and current solutions require additional components like gaskets to maintain tight engagement.
Innovation Solution
A nut design featuring a thread portion with a smaller pressing portion that deforms under external force, providing enhanced engagement without the need for a gasket, and optionally incorporating stress detection pieces or grooves for improved radial deformation and manufacturing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is disposed between the nut and the object to prevent loosening, then the tight engagement state is maintained, but the device complexity increases due to the extra component
Solution Approach 1:
The pressing portion is integrated with the nut body to form a single component, eliminating the need for a separate gasket. The pressing portion extends from the nut and abuts against the first object, providing the necessary pressing function while maintaining structural simplicity.
Solution Approach 2:
The pressing portion has a different wall thickness (smaller) compared to the nut body, creating a localized deformation zone. This local structural variation allows the pressing portion to deform and press against the object without compromising the overall nut strength, while eliminating the need for an additional gasket component.
2Force
If the pressing portion wall thickness is reduced to enable deformation, then the pressing function is enhanced, but the structural strength may be compromised
Solution Approach 1:
The pressing portion has a smaller wall thickness specifically at the region that contacts the object, while the rest of the nut maintains sufficient wall thickness for overall strength. This localized thinning allows controlled deformation and pressing without compromising the global structural integrity of the nut.
Solution Approach 2:
The nut is functionally segmented into the pressing portion (with smaller wall thickness for deformation) and the nut body (with sufficient wall thickness for strength). This segmentation allows each part to optimize its properties for its specific function while remaining part of an integrated structure.
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 nut design effectively maintains a tight engagement state between the nut and screwing piece during vibrations, simplifying inventory management and assembly efficiency while eliminating the need for additional components.
Implementation Method 1
A wall thickness of the pressing portion is smaller than a wall thickness of the thread portion
Data Source
AI summary
A nut includes a thread portion and a pressing portion. The thread portion is formed at an end of the nut. The thread portion includes a threaded inner wall surface for engaging with a screwing shaft of a screwing piece. The pressing portion is extended from the thread portion and formed at the other end of the nut. A wall thickness of the pressing portion is smaller than a wall thickness of the thread portion. An outer wall surface of the pressing portion is aligned with an outer wall surface of the thread portion.