Transformer coil

摘要

A bobbin includes a core portion extending in a z-axis direction, a flange portion at an end of the core portion on a negative direction side of the z-axis direction and extending from the core portion in an x-axis direction and a y-axis direction, and a projecting portion projecting toward the negative direction side of the z-axis direction from a surface S1 on the negative direction side of the flange portion in the z-axis direction. Pin terminals project from the surface S1 of the flange portion toward the negative direction side of the z-axis direction. A winding is wrapped around the core portion, with both ends respectively wrapped around the pin terminals. Both ends of the winding are respectively soldered to the pin terminals at a region between an end portion of the projecting portion on the negative direction side of the z-axis direction and the surface S1 of the flange portion.

主权项

1. A transformer coil comprising:
a bobbin including a core portion extending in a predetermined direction, a flange portion at an end of the core portion on one side of the predetermined direction and extending from the core portion in a perpendicular or substantially perpendicular direction that is perpendicular or substantially perpendicular to the predetermined direction, and a projecting portion projecting toward the one side in the predetermined direction from a first surface on one side of the flange portion in the predetermined direction; two first terminals projecting from the first surface of the flange portion toward the one side in the predetermined direction; and a first winding including a portion wrapped around the core portion and two ends respectively wrapped around the two first terminals; wherein the two ends of the first winding are respectively soldered by solder to the two first terminals at a region between an end portion of the projecting portion on the one side in the predetermined direction and the first surface of the flange portion; the first winding includes a covering made of insulative material; at a portion of the first winding adjacent to the first surface of the flange portion, the covering is not melted; the solder is not adhered to the first surface of the flange portion; a portion of each of the two ends of the first winding is wrapped around a respective one of the two first terminals in a helix shape, and the covering on the portion of each of the two ends of the first winding that is wrapped around the respective one of the two first terminals is not melted; the first winding includes a drawn-out portion extending between the portion of the first winding wrapped around the core portion and the two ends of the first winding; and the covering on the drawn-out portion of the first winding is not melted.