Spring Securing Member Structure for Stronger Coil Mounting
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Solution Overview
Problem
Existing coil components face challenges in achieving sufficient mounting strength when connected to a mounting board, particularly in varying environmental conditions, due to the limited securing capability of conductive wires alone.
Innovation Solution
A coil component design featuring a magnetic core with wound conductive wires and a securing member with spring properties, including specific surface angles and curved surfaces, which secures the magnetic core and enhances mounting strength by sandwiching it from both sides and providing additional mounting surfaces for solder connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only conductive wires are used to connect the coil conductor to the mounting board, then the device complexity is reduced, but the mounting strength is insufficient
Solution Approach 1:
The patent combines the securing function and mounting function into a single integrated securing member. This member simultaneously secures the magnetic core and coil conductor assembly while providing mounting surfaces for connection to the mounting board, eliminating the need for separate connection structures and achieving both structural simplicity and enhanced mounting strength.
Solution Approach 2:
The securing member performs multiple functions: it secures the magnetic core, holds the coil conductor, and provides mounting surfaces for board connection. This multi-functional design replaces what would traditionally require multiple separate components, resolving the contradiction between simplicity and strength.
2Strength
If a securing member with complex geometry is used to enhance mounting strength, then the mounting strength is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies parameter ranges (acute angles for side surfaces, curved surfaces for flexibility) that provide mounting strength while being manufacturable with standard precision. These parameter choices balance performance requirements with manufacturing capabilities, avoiding overly stringent precision demands.
Solution Approach 2:
The use of curved surfaces on the securing member provides mechanical flexibility and stress distribution that enhances mounting strength without requiring high manufacturing precision. Curved geometries are generally more tolerant of manufacturing variations compared to sharp angles or complex features.
3Strength
If the securing member has acute angled surfaces, then the mounting strength is enhanced, but the stress concentration increases
Solution Approach 1:
The patent employs curved surfaces on the securing member to replace acute angles in critical stress areas. This curvature distributes stress more evenly throughout the structure, preventing stress concentration while maintaining the overall acute-angled geometry needed for mounting strength.
Solution Approach 2:
The securing member has different geometric characteristics in different regions: acute angles where mounting strength is needed, and curved surfaces where stress concentration must be avoided. This local differentiation of geometric quality resolves the contradiction between strength and stress management.
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 enhanced securing member design significantly improves the joint strength between the coil component and the mounting board, preventing stress concentration and entanglement of securing members, while allowing for efficient manufacturing and reduced costs.
Implementation Method 1
a securing member that has spring properties, includes an upper surface portion, a first side surface portion and a second side surface portion
Data Source
AI summary
A coil component includes a magnetic core that includes a pair of wind portions, a pair of coil conductors where respective conductive wires are wound around the wind portions, and a securing member that has spring properties, includes an upper surface portion, first and second side surface portions, and first and second bottom surface portions, and secures the core while surrounding the core. With the securing member removed from the core, angles formed by the upper surface portion and first side surface portion, the upper surface portion and second side surface portion, the first side surface portion and first bottom surface portion, and the second side surface portion and second bottom surface portion are acute angles. The first and second side surface portions are formed by curved surfaces. The first and second bottom surface portions serve as mounted portions when the coil component is mounted over a mounting board.