Patent ID: 6734781
Filing Date: 2004-05-11
Classification: H01H

Abstract:
A mount structure for thermal fuse on circuit board, comprising:a circuit board having a first surface where a predetermined circuit is formed; and a second surface a through opening provided in said circuit board; the through opening joining the first and second surfaces; an electronic component attached to the first surface of said circuit board to extend across said through opening; a thermal fuse provided on the second surface of said circuit board to enter said through opening, responding to temperature of said electronic component via a heat-conducting insulating member filling said through opening for breaking said predetermined circuit; and a through hole provided in said circuit board, wherein said thermal fuse is electrically connected to said predetermined circuit via said through hole, wherein the through opening and the heat-conducting insulating member contained therein are free from electrical conductors in the space between the electronic component and the thermal fuse.