Throttle valve assembly

A throttle valve assembly for supporting a motor coupled to a pinion gear to generate power, an intermediate gear meshed with the pinion gear, and a segment gear meshed with the intermediate gear to be rotated by the power generated from the motor, the throttle valve assembly comprising:

• a valve body including an intake passage, a mounting space that communicates with the intake passage, a motor accommodating space, and a mounting groove formed between the mounting space and the motor accommodating space, wherein the valve body includes a plastic;
• a valve plate coupled to a rotary shaft that is rotatably installed in the intake passage of the valve body to adjust an amount of air or a mixed gas ingested into an engine;
• and
• a reinforcement portion including a metal and disposed within the valve body by an insert injection method,
• wherein the reinforcement portion comprises:
• a valve mounting portion formed in a shape that corresponds to an inner circumferential surface of the intake passage to be coupled to the inner circumferential surface of the intake passage,
• a first mounting portion formed in a shape that corresponds to an inner circumferential surface of the mounting space to be coupled to the inner circumferential surface of the mounting space and perpendicularly passing through the valve mounting portion to communicate with the valve mounting portion,
• a second mounting portion spaced apart from the first mounting portion and forme in a shape that corresponds to an inner circumferential surface of the mounting groove to be coupled to the inner circumferential surface of the mounting groove,
• wherein the segment gear is rotatably coupled to the first mounting portion and the intermediate gear is rotatably coupled to the second mounting portion.