Patent ID: 8499732

Claim:
A valve timing control apparatus for an internal combustion engine, comprising: a housing body having a hollow cylindrical shape having at least an open axial end, wherein the housing body is formed with a plurality of shoes at an inside periphery of the housing body, wherein each of the shoes projects inwardly in a radial direction of the housing body, and is formed with a first bolt hole, wherein the first bolt holes extend through the housing body in an axial direction of the housing body, and wherein the housing body is formed with a sealing recess at the open axial end of the housing body; a vane rotor rotatably mounted in the housing body, wherein the vane rotor includes a vane, wherein the vane and the shoes define an advance chamber and a retard chamber between the vane rotor and housing body, and wherein the advance chamber and the retard chamber are adapted to supply and drainage of fluid; a first plate fixedly inserted in the sealing recess of the housing body, the first plate sealing an axial end opening of the advance chamber and an axial end opening of the retard chamber, wherein the first plate is formed with second bolt holes whose positions are conformed to positions of the first bolt holes of the housing body respectively, and wherein the second bolt holes extend through the first plate; a plurality of bolts that are inserted through respective ones of the first bolt holes of the housing body and respective ones of the second bolt holes of the first plate, for fixing the first plate to the housing body; a pulley adapted to winding of a belt, and arranged to rotate with the housing body; an annular first sealing ring arranged between an inside periphery of the sealing recess and an outside periphery of the first plate; and an annular second sealing ring arranged between the first plate and an axial end surface of one of the shoes, wherein the annular second sealing ring extends circumferentially around one of the second bolt holes.