Spring Nut with Resilient Shackles for Variable Stud Fit
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Solution Overview
Problem
Conventional spring nuts are limited to specific stud sizes and require precise stud length adjustments to prevent protrusion, lacking adaptability and protection against inadvertent contact.
Innovation Solution
A spring nut design that encloses the stud completely, featuring a cylindrical outer wall and radially resilient inner shackles for adjustable fit, manufactured without undercuts for simplified production, with locking members for secure attachment and easy disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the spring nut is designed for a specific stud size, then the attachment is secure and reliable, but the adaptability to different stud sizes is limited
Solution Approach 1:
The spring nut incorporates resilient shackles that can dynamically adjust their position and shape to accommodate different stud diameters. The shankles are designed to be elastically deformable, allowing them to adapt to various stud sizes while maintaining secure attachment through resilient locking action
Solution Approach 2:
The design allows the inner wall components (shackles) to change their physical parameters (shape, position) in response to different stud dimensions. The resilient nature of the shackles enables parameter adjustment to match different stud diameters while maintaining functional integrity
2Shape
If the stud length is precisely adjusted, then the stud does not protrude on the rear side, but the complexity of assembly increases and time is lost
Solution Approach 1:
The spring nut is pre-designed with a seat length that is sufficient to enclose studs of various lengths. The resilient shackles are pre-configured to provide automatic adjustment, eliminating the need for precise stud length adjustment during assembly. The uniform appearance is achieved through the closed outer wall that conceals any variations
Solution Approach 2:
The resilient shackles automatically adapt to the stud dimensions upon insertion, providing self-adjusting functionality. The spring nut performs the adjustment function automatically through the elastic deformation of the shackles, eliminating the need for manual intervention or precise pre-adjustment of stud length
3Adaptability or versatility
If the inner wall is made resilient to adapt to stud diameter, then the adaptability improves, but the manufacturing complexity increases
Solution Approach 1:
The inner wall is segmented into multiple independent resilient shackles rather than a continuous structure. This segmentation allows each shackle to independently adapt to the stud diameter while simplifying the overall manufacturing process, as each shackle can be formed using standard injection molding techniques without complex tooling
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 design ensures reliable protection and secure attachment of the stud across various sizes and lengths, maintaining a uniform appearance while allowing for flexible adjustment and easy assembly/disassembly without rotational motion.
Implementation Method 1
The inner wall serves for an adjustment to the particular stud size and can yield resiliently, preferably in the peripheral direction, and in this way can adapt to the diameter of the stud
Data Source
AI summary
In a spring nut (10) for attachment onto a stud (12), having a substantially oblong seat for the stud (12), the seat having an axial insertion opening (32) for the stud (12) and a holding section for the stud (12), provision is made that the spring nut (10) completely encloses the seat on a front wall (28) opposite the insertion opening (32) and in the peripheral direction.