Coil Terminal Slit-Mount Structure for Vibration Resistance
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Solution Overview
Problem
The electrode terminal in existing coil components is prone to detachment from the bottom plate portion due to vibrations or impacts, especially as the core size increases and weight increases, leading to potential disconnection issues.
Innovation Solution
The coil component design includes an attachment base portion with a slit hole where the electrode terminal's first flat plate portion is inserted, coupled with a coupling portion facing the outer end face, and secured with a fillet forming region for solder attachment, enhancing fixation and reducing detachment risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the core size is increased to handle higher current, then the current handling capacity is improved, but the weight increases leading to greater vibrations and impacts causing electrode terminal detachment
Solution Approach 1:
The attachment base portion is divided into multiple regions: a main body portion and a protruding portion extending toward the electrode terminal. This segmentation allows the protruding portion to specifically counterbalance the electrode terminal's weight and vibrations, while the main body supports the core, thereby improving attachment reliability without limiting core size for high current applications
Solution Approach 2:
The protruding portion of the attachment base portion acts as a counterweight structure that extends toward the electrode terminal. This counterweight configuration specifically addresses the vibrations and impacts generated by heavier cores in high current applications, preventing electrode terminal detachment while maintaining the ability to handle higher currents
2Ease of manufacture
If adhesive members are used to fix the electrode terminal to the bottom plate portion, then the ease of manufacture is improved, but the reliability under vibrations and impacts deteriorates
Solution Approach 1:
The attachment base portion is segmented into a main body portion and a protruding portion that extends toward the electrode terminal. This structural segmentation provides enhanced mechanical support and vibration resistance compared to simple adhesive bonding, while still maintaining ease of manufacture through integrated molding or attachment processes
Solution Approach 2:
The protruding portion of the attachment base portion serves as an intermediary mechanical structure between the main body and the electrode terminal. This intermediary structure provides superior mechanical support and vibration damping compared to adhesive members alone, improving reliability while maintaining manufacturing simplicity
Data Source
AI summary
A coil component includes a core having an annular shape, a coil wound around the core, an electrode terminal connected to the coil, and an attachment base portion to which the electrode terminal is attached. The attachment base portion includes an inner end face facing a core side, an outer end face facing a side opposite to the inner end face, a bottom surface coupling the inner end face and the outer end face to each other, and a top surface facing a side opposite to the bottom surface, and the attachment base portion includes a slit hole penetrating between the inner end face and the outer end face. The electrode terminal includes first and second flat plate portions, and a coupling portion coupling the first and second flat plate portions to each other, and the first flat plate portion and the second flat plate portion face each other.