Partial-Circumference Winding Post for Safer Coil Anchoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing winding posts for electromagnetic coils are prone to breaking or causing wire breakage due to notch effects from grooves extending into longitudinal edges, compromising component safety during bending or winding processes.
Innovation Solution
A winding post with a rod-shaped body featuring surface elements as depressions that extend only partially over the circumference, avoiding penetration into longitudinal edges, thereby reducing notch effects and enhancing component safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If grooves extend into the longitudinal edges of the winding post, then anchoring strength and wire fixation are improved, but the risk of breaking during bending or winding increases due to notch effect
Solution Approach 1:
The groove is designed to extend only over a partial circumference of the winding post, specifically avoiding the longitudinal edges. This creates a local quality difference where the groove provides anchoring strength in the circumferential direction while the edge regions remain intact to prevent stress concentration and breaking during bending or winding operations.
2Force
If grooves extend over the entire width into longitudinal edges, then pull-out force is maximized, but wire breakage risk increases during winding process
Solution Approach 1:
The groove is positioned to extend only over a partial circumference, creating localized anchoring zones that provide sufficient pull-out force while leaving the critical edge regions intact. This prevents stress concentration at the edges that would otherwise lead to wire breakage during the winding process.
Solution Approach 2:
The design converts the potential harm of edge stress concentration into a benefit by deliberately excluding the edges from groove penetration. The groove provides the necessary anchoring function while the intact edges serve as stress-relief zones that prevent catastrophic failure during bending or winding operations.
Data Source
Figure 1~3
Figure 4~6
AI summary
The invention relates to a winding post (10) for connecting to a coil body of an electromagnetic coil, wherein the winding post (10) has a rod-like post body (11), formed from a piece of wire, having a polygonal cross section or round cross section, and the post body (11) is provided on its surface (13, 14), in the longitudinal direction (16), with a serial arrangement (15) of surface elements that extend transversely to the longitudinal direction (16) and are at least partially in the form of recesses (17), wherein the recesses (17) extend in the circumferential direction only around a part of the circumference of the post body (11), wherein the recesses (17) extend in the circumferential direction between adjacent longitudinal edges (18, 19) of the polygonal cross section such that the recesses (17) are spaced apart from the longitudinal edges (18, 19), or extend around a part of the circumference of the round cross section.