Patent ID: 6966298

Claim:
An intake throttle valve apparatus, comprising: an intake throttle valve including a valve housing, a valve shaft rotatably supported within said valve housing and a valve element fixedly mounted on said valve shaft for changing an opening area of an intake passage formed internally of said valve housing, a reduction gear mechanism operatively coupled to said intake throttle valve, and a driving motor operatively coupled to said reduction gear mechanism so that a driving force of said driving motor is transmitted to said valve shaft through the medium of said reduction gear mechanism for thereby changing said opening area of said intake passage through rotation of said valve element, wherein said reduction gear mechanism is composed of an output gear fixedly secured to a motor shaft of said driving motor and an input gear fixedly secured to said valve shaft at one end thereof and directly meshing with said output gear, and said output gear is so mounted on said motor shaft that a gear-tooth portion is distanced from the tip end of said motor shaft in the axial direction.