Patent ID: 7202767
Filing Date: 2007-04-10
Classification: H01F

Abstract:
1. An ignition apparatus for an internal combustion engine comprising: a central core having one end face and an other end face; a primary coil and a secondary coil arranged outside of said central core; a magnet arranged in abutment with the one end face of said central core, said magnet being magnetized in a direction opposite to the direction of a magnetic flux generated by energization of said primary coil; a side core arranged outside of said primary coil and said secondary coil so as to cooperate with said central core and said magnet to form a closed magnetic circuit; and a core cover with flexibility arranged to cover said side core; wherein said side core comprises a first side core section having one end face and an other end face, and a second side core section having one end face and an other end face, said first and second side core sections being arranged with their one end faces being in abutment with each other; and the other end of said first side core section is arranged in abutment against said magnet, and the other end of said second side core section is also arranged in abutment against the other end face of said central core.