Choke coil

#The present invention relates to the structure of a choke coil for high-frequency power use and which is suitable to make the coil more compact and thinner.

#The requirements in development for more compact and thinner electronic apparatus for switching power and the like have been continued as they are directly linked to the requirement for more compact electronic parts.

#In particular, there is a great demand for more compact choke coils which are one electronic part which requires a particularly large area.

#FIG. 1 is an assembly perspective view showing an embodiment of the choke coil according to the present invention;

#FIG. 2 is an assembly perspective view showing the status where the core is removed;

#FIG. 3 is an assembly perspective view from the underside and showing the status where the core is removed;

#The following is a description of a preferred embodiment of the choke coil according to the present invention with reference to FIGS. 1 through 7.

#In FIGS. 1 through 7, 1 is a bobbin comprising synthetic resin, 2 is a band-shaped conductor of copper and which has had insulation processing implemented for its surface, and 3 is an E-type core comprising ferrite.

#The bobbin 1 is provided with a cylindrical winding portion around which a band-shaped conductor 2 is wound, and a terminal fixing plate 5 which protrudes from the periphery on the lower side of the winding portion 4 to the outer side. To one side of the side surface 9 of the terminal fixing plate 5, a cutout portion 11 leading to the end surface 10 is provided. The terminal fixing plate 5 has the function of fixing the ends of the band-shaped conductor 2.