Patent ID: 6085710
Filing Date: 2000-07-11
Classification: H01T

Abstract:
A heat shielding structure for internal-combustion engines including a cylinder block, said heat shielding structure connecting an ignition cable having a cable end to a spark plug, said heat shielding structure comprising:a spark plug including a stud terminal extending from said cylinder block;a plug boot including a cylinder-side end portion and a cable-side end portion, said plug boot containing a high-voltage terminal held by pressure between said cable end and said stud terminal, so that said ignition cable and said spark plug are maintained in a connected state;a heat shield having a substantially cylindrical shape and including a cylinder-side end portion and a cable-side end portion, said heat shield covering said plug boot;an auxiliary heat shield including a cylinder-side end portion and a cable-side end portion, and covering said heat shield with a predetermined space therebetween; anda lid unit including a pressing portion which contacts said cable-side end portion of said plug boot and a cable hole from which said ignition cable extends from said cable-side end portion of said plug boot;whereby said cylinder-side end portion of said auxiliary heat shield is fixed between said spark plug and said cylinder block and said lid unit forms a locking arrangement together with said cable-side end portion of said auxiliary heat shield, whereby, when said lid unit is fitted to said cable-side end portion of said auxiliary heat shield, said pressing portion exerts a downward force on said plug boot through said locking arrangement.