Patent ID: 11942265
Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An inductor comprising:
a first conductor layer comprising:
a pair of first metal pieces; and
a first conductor, wherein the first conductor extends from one of the pair of first metal pieces to the other first metal piece to be wound in a spiral shape in a same plane of the first conductor;

a second conductor layer comprising:
a pair of second metal pieces, wherein each of the pair of second metal pieces is bonded to a corresponding one of the pair of first metal pieces; and
a second conductor, wherein the second conductor extends from one of the pair of second metal pieces toward the other second metal piece to be wound in a spiral shape in a same plane of the second conductor, and the second conductor comprises an inner circumferential side end portion bonded to an inner circumferential side end portion of the first conductor;

a pair of electrodes each of which is bonded to a corresponding one of the pair of second metal pieces;
a sealing resin that covers the first conductor layer, the second conductor layer and the pair of electrodes; and
an insulating film that covers surfaces of the pair of first metal pieces, surfaces of the pair of second metal pieces, and surfaces of the pair of electrodes, the insulating film being disposed between the sealing resin and each of the first conductor layer, the second conductor layer, and the pair of electrodes,
wherein the sealing resin comprises:
a lower face that faces the second conductor;
an upper face that faces the first conductor and that is opposite to the lower face; and
side faces that are positioned between the lower face and the upper face, each of the pair of electrodes includes:
a bonding portion; and
an overhanging portion integrally formed with the bonding portion, the overhanging portion overhangs in a direction perpendicular to a thickness direction of the bonding portion from an inner side face on one end side of the bonding portion,

another end side of the bonding portion of each of the pair of electrodes is bonded to the corresponding one of the pair of second metal pieces,
a lower face of each of the pair of electrodes is defined by an end face on the one end side of the bonding portion of each of the pair of electrodes and an end face of the overhanging portion of each of the pair of electrodes positioned on an opposite side to the corresponding one of the pair of second metal pieces, the lower face of each of the pair of electrodes is exposed from the sealing resin in the lower face of the sealing resin so as to be flush with the lower face of the sealing resin,
an outer side face of the bonding portion of each of the pair of electrodes is exposed from a respective one of the side faces of the sealing resin and is flush with the respective one of the side faces of the sealing resin,
an inner side face on the another end side of the bonding portion of each of the pair of electrodes and an end face of the overhanging portion of each of the pair of electrodes which is positioned on a same side as the corresponding one of the pair of second metal pieces are covered by the sealing resin,
the outer side face of the bonding portion of each of the pair of electrodes and the lower face of each of the pair of electrodes are exposed from the insulating film, and
wherein the insulating film covers an entirety of the inner side face on the another end side of the bonding portion of each of the pair of electrodes and an entirety of the end face of the overhanging portion of each of the pair of electrodes which is positioned on the same side as the corresponding one of the pair of second metal pieces.