ASSEMBLY STRUCTURE FOR NON-MAGNETIC BODY

摘要

A hollow portion (23) through which a rotation member (19) rotatably penetrates is formed in an intake manifold (10) which is a nonmagnetic member. A magnet holding portion (27) which holds the magnet (26) is inserted into the hollow portion (23) from the opening end portion (25)'s side. A position sensor (22) is assembled to a retaining portion (30) formed on an outer circumference portion of the hollow portion (23). A cover (35) is spin-welded to close the opening end portion (25) in a state where the magnet holding portion (27) and the position sensor (22) are assembled. This cover (35) restricts the movements of the magnet holding portion (27) and the position sensor (22) in a rotation axis direction.