Coil Component Recess Marking for Reliable Mounting Recognition
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Solution Overview
Problem
The existing coil components face difficulties in identifying the mounting direction due to diffuse reflection of light on the surface of the marking elements, making it challenging to accurately recognize the marking elements using identification devices.
Innovation Solution
A coil component design that includes a body with a recess portion and an identification portion filled with a second insulating resin, which is easier to identify, featuring a tapered recess shape to guide the filling material and improve coupling with the body, and a surface insulating layer to protect the identification portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a marking element is provided on the coil component to identify mounting direction, then identification function is improved, but light diffuse reflection on the surface makes it difficult to identify the marking element
Solution Approach 1:
The patent applies a marking element with a specific color (yellow) that contrasts with the body color (black) to enhance visibility. The color difference creates strong visual contrast that overcomes the diffuse reflection problem, making the marking element easily identifiable by identification devices.
Solution Approach 2:
The marking element is positioned to protrude from the surface of the coil component body, creating a three-dimensional structure. This dimensional change allows the marking element to be detected not only by color contrast but also by physical presence, improving detection reliability despite surface light reflection issues.
2Strength
If the identification portion is filled in the recess portion, then coupling force between body and identification portion is improved, but manufacturing complexity increases
Solution Approach 1:
The recess portion is pre-formed on the body surface before the identification portion is applied. This preliminary action creates a prepared receptacle that guides the filling process and ensures proper positioning, simplifying the overall manufacturing sequence while achieving strong coupling.
Solution Approach 2:
The patent utilizes the recess portion as a porous or cavity structure that receives and retains the identification portion filling material. This cavity structure provides mechanical interlocking and adhesion surface area, enhancing coupling force without requiring complex external fastening mechanisms.
Data Source
AI summary
A coil component includes a body including a first insulating resin, a coil unit disposed in the body, and first and second external electrodes disposed to be spaced apart from each other on the body and connected to the coil unit, wherein a first surface of the body has a recess portion, and an identification portion is disposed in the recess portion and includes a second insulating resin.