Intake device

An air intake device, comprising:

• a throttle body having a first end face and a second end face, said throttle body defining a throttle bore;
• a throttle valve for opening/closing said throttle bore;
• a motor for driving said throttle valve to open/close said throttle valve;
• a power transmission mechanism for transmitting drive power of said motor to said throttle valve;
• a support member for positioning and holding, on one side, said throttle body and said motor, and positioning and holding, on the other side, said power transmission mechanism;
• and
• an intake air manifold formed of a resin material for defining an intake air passage together with said throttle bore,
• wherein:
• said first end face and said second end face of said throttle body provide a wedge-shaped, tapered flange,
• said intake air manifold is provided with a housing chamber for accommodating said throttle body and said motor,
• said housing chamber has a housing part in which said throttle body is accommodated, and
• said housing part is provided with a joint face which is jointed to said first end face and said second end face of said throttle body, the joint face having first and second guide faces which are tapered inwardly with respect to each other so as to guide said throttle body into said housing part and engage with said housing part in a complementary manner.