Coil Component Anchoring via Segmented Connecting Parts
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Solution Overview
Problem
Existing coil components are prone to electrical disconnection when subjected to physical external forces, leading to deterioration in electrical or magnetic characteristics due to the coil end portions coming out of through holes and disconnecting from external electrodes.
Innovation Solution
A coil component design featuring external electrodes with opposing surfaces and connecting parts that anchor the coil ends within through holes, ensuring the electrodes remain connected even under external forces, with optional plating layers to enhance stability and prevent peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the coil end portions are inserted in through holes and joined to external electrodes, then the coil component has a compact structure, but the end portions are likely to come out of the through holes when physical external force acts, causing electrical disconnection
Solution Approach 1:
The connecting part is divided into two functional segments: a first part that couples to the external electrode and a second part that extends into the through hole. This segmentation allows each part to perform its specific function optimally - the first part provides electrical connection while the second part provides mechanical anchoring, thereby resolving the contradiction between compact structure and connection stability.
Solution Approach 2:
The connecting part extends in multiple spatial dimensions - horizontally to connect with the external electrode and vertically into the through hole. This multi-dimensional configuration allows the same component to simultaneously achieve electrical connection (horizontal dimension) and mechanical anchoring (vertical dimension), resolving the contradiction between compactness and reliability.
2Ease of manufacture
If the external electrodes are directly connected to the coil ends, then the manufacturing process is simple, but the electrical connection may be disconnected under external forces
Solution Approach 1:
The connecting part is segmented into a first part for electrical coupling and a second part for mechanical anchoring. This segmentation maintains manufacturing simplicity by using a single continuous component that can be formed in one process, while simultaneously improving reliability through the functional differentiation of its segments.
Solution Approach 2:
The connecting part serves multiple functions simultaneously: it provides electrical connection through the first part and mechanical anchoring through the second part. This multi-functionality allows a single component to replace what would otherwise require separate connection and anchoring elements, maintaining manufacturing simplicity while achieving high reliability.
3Reliability
If the connecting parts are extended into through holes, then the anchoring effect is improved, but the device structure becomes more complex
Solution Approach 1:
The connecting part merges the electrical connection function and the mechanical anchoring function into a single integrated component. By combining these functions in one element that extends from the external electrode into the through hole, the design achieves strong anchoring without requiring separate anchoring structures, thereby limiting the increase in structural complexity.
Solution Approach 2:
The connecting part is designed as a multi-functional element that simultaneously provides electrical connection and mechanical anchoring. This universality allows one component to perform multiple roles, avoiding the need for additional separate components and thus limiting the overall structural complexity while achieving improved anchoring effectiveness.
Data Source
AI summary
A coil component includes: an element body including a main surface; a pair of external electrodes disposed on the main surface; and a coil including a coil part positioned in the element body and a pair of connecting parts exposed from the element body and each connected to a corresponding external electrode of the pair of external electrodes. Each of the pair of external electrodes includes a first surface opposing the main surface and a second surface opposing the first surface. Each of the pair of connecting parts includes a first part coupled to the second surface of the corresponding external electrode and a second part continuous with the first part and an end of the coil part.