Method of Manufacturing Throttle Body, and Throttle Body

摘要

A resin main body ( 3 ) defining a bore ( 7 ) through which intake air flows, and a valve body ( 60 ) having a shaft part ( 20 ) rotatably supported by the main body ( 3 ) and a valve part ( 4 ) for opening and closing the bore ( 7 ) of the main body ( 3 ) are provided. The main body ( 3 ) is molded with the valve body ( 60 ) inserted together with a pair of bearing sleeves ( 24 ). At the time of molding the main body ( 3 ), the bearing sleeves ( 24 ) are biased in a direction opposite to the flow of the intake air with the valve member ( 60 ) being positioned in place.