Magnetic element
First Claim
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1. A magnetic element comprising:
- a first magnetic core including a coil which is wound by a predetermined number of turns;
a second magnetic core which circumferentially surrounds said first magnetic core and which is combined with said first magnetic core, said second magnetic core having a cutaway portion; and
a metal terminal which connects said coil and a mounting substrate, wherein said metal terminal includes;
a fixing portion which secures said second magnetic core to said first magnetic core;
a mount portion which is connectable to said mounting substrate, said mount portion having first and second sides;
a solder fillet forming portion extending from said first side of said mount portion along an outer wall of said second magnetic core; and
a binding portion to which an end of said coil is bound, said binding portion extending from said second side of said mount portion along said outer wall of said second magnetic core,wherein a first air gap of 0.5 mm or more is located between a root of said binding portion and a root of said solder fillet forming portion;
a concave portion is formed on said outer wall of said second magnetic core immediately under said cutaway portion toward a center of said second magnetic core, and said concave portion is located next to said solder fillet forming portion.
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Abstract
A magnetic element including: a first magnetic core including a coil which is wound by a predetermined number of turns; a second magnetic core which includes the coil in the inside thereof and which is combined along the outer circumference of the first magnetic core; and a metal terminal which connects the coil and a mounting substrate, wherein the metal terminal includes a fixing portion for fixing the second magnetic core in a state of combining the first magnetic core and the second magnetic core.
15 Citations
5 Claims
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1. A magnetic element comprising:
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a first magnetic core including a coil which is wound by a predetermined number of turns; a second magnetic core which circumferentially surrounds said first magnetic core and which is combined with said first magnetic core, said second magnetic core having a cutaway portion; and a metal terminal which connects said coil and a mounting substrate, wherein said metal terminal includes; a fixing portion which secures said second magnetic core to said first magnetic core; a mount portion which is connectable to said mounting substrate, said mount portion having first and second sides; a solder fillet forming portion extending from said first side of said mount portion along an outer wall of said second magnetic core; and a binding portion to which an end of said coil is bound, said binding portion extending from said second side of said mount portion along said outer wall of said second magnetic core, wherein a first air gap of 0.5 mm or more is located between a root of said binding portion and a root of said solder fillet forming portion; a concave portion is formed on said outer wall of said second magnetic core immediately under said cutaway portion toward a center of said second magnetic core, and said concave portion is located next to said solder fillet forming portion. - View Dependent Claims (2, 3, 4)
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5. A magnetic element, comprising:
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an air-core coil; a first magnetic core having a box shape with an open top, the air-core coil being provided inside the first magnetic core; a second magnetic core fit within the open top of the first magnetic core; and a metal terminal connected to the air-core coil, the metal terminal including; a mount portion under the first magnetic core relative to the second magnetic core; a solder fillet forming portion having a first plate shape of a first width and that perpendicularly extends from the mount portion along a side of the first magnetic core; a fixing portion having a second plate shape of a second width that is narrower than the first width, and that extends from the solder fillet forming portion further along the side of the first magnetic core, the fixing portion having a tip that engages a cutaway of the second magnetic core to secure the second magnetic core to the first magnetic core, and a binding portion to which an end of the air-core coil is attached, the binding portion having a recess between the tip and the solder fillet forming portion for binding the end of the air-coil.
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Specification