US 2024/0258018 A1 · COIL COMPONENT

Abstract

A coil component includes first and second wound areas along an axis direction of a winding core portion. In the first wound area, a first wire is wound as a first layer. A second wire is wound as a second layer in a recessed portion between adjacent turns of the first wire, returned from an end portion on a second end portion side to a first end portion side and guided to an outer peripheral side of the second layer, wound as a third layer, guided to a position of the second layer on an outer peripheral side of the first layer, and wound as the second layer in a recessed portion between adjacent turns of the first wire of the first layer. In the second wound area, a layer in which each of the first and second wires in the first wound area is located is replaced.

A coil component comprising:

a core that includes a winding core portion having a first end portion and a second end portion opposite to each other in an axis direction;
and
a first wire and a second wire spirally wound around the winding core portion and having substantially the same number of turns as each other, wherein
among a plurality of layers configured by the first wire and the second wire wound around the winding core portion, when a first layer is a layer closest to a peripheral surface of the winding core portion, a second layer is a layer wound on an outer peripheral side of the first layer while being fitted in a recessed portion between adjacent turns of a wire located in the first layer, and a third layer is a layer wound on an outer peripheral side of the second layer while being fitted in a recessed portion between adjacent turns of a wire located in the second layer,
a plurality of wound areas including at least a first wound area and a second wound area in which winding states of the first wire and the second wire are different from each other are along the axis direction,
the first wound area includes
a first wound portion in which the first wire is wound in a direction from the first end portion toward the second end portion in the first layer,
a second wound portion in which the second wire is wound in a direction from the first end portion toward the second end portion in the second layer to a partway of a range of the first wound portion,
a first transfer portion in which winding direction of the second wire is changed from an end of the second wound portion on the second end portion side toward the first end portion side, and the second wire is guided to a position of the third layer,
a third wound portion in which the second wire is connected to the first transfer portion and is wound by N turns (N is a natural number) in the third layer,
a second transfer portion in which the second wire is guided from the third wound portion to a position of the second layer, and
a fourth wound portion in which the second wire is connected to the second transfer portion and is wound toward the second end portion in the second layer,
a position of each of the first wire and the second wire is switched between the first wound area and the second wound area,
the second wound area includes
a fifth wound portion in which the second wire is wound in a direction from the first end portion toward the second end portion in the first layer,
a sixth wound portion in which the first wire is wound in a direction from the first end portion toward the second end portion in the second layer to a partway of a range of the fifth wound portion,
a third transfer portion in which winding direction of the first wire is changed from an end of the sixth wound portion on the second end portion side toward the first end portion side, and the first wire is guided to a position of the third layer,
a seventh wound portion in which the first wire is connected to the third transfer portion and is wound by M turns (M is a natural number) in the third layer,
a fourth transfer portion in which the first wire is guided from the seventh wound portion to a position of the second layer, and
an eighth wound portion in which the first wire is connected to the fourth transfer portion and is wound toward the second end portion in the second layer, and
regarding a direction of a shift between the first wire and the second wire, when a shift in a positive direction is defined in a case where a turn of the second wire is closer to the second end portion side than a turn of the first wire with the same turn number as the turn of the second wire, and a shift in a negative direction is defined as in an opposite case,
a positive direction shift area in which a turn is shifted in the positive direction between the first wire and the second wire, and a negative direction shift area in which a turn is shifted in the negative direction between the first wire and the second wire, are in each of the first wound area and the second wound area.

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Coil component

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Abstract

Claims17