CONTRA-ROTATING AXIAL FLOW BLOWER

摘要

PROBLEM TO BE SOLVED: To provide a contra-rotating axial flow blower causing little disconnection of joining of both even if force is applied in the inverse direction of the direction for joining both to a first case and a second case. SOLUTION: A first fitting groove and a second fitting groove are formed in the first case. A hook 53 and a projection 55 are integrally arranged in the second case 33. A shape of the hook 53 and the first fitting groove is determined so as to exhibit the function of resisting first rotary operation for rotating the first case of a combined state in one direction D1 to the second case 33 by resisting separating operation of the first case and the second case 33 of a joined state. A shape of the projection 55 and the second fitting groove is determined so as to exhibit the function of resisting second rotary operation for rotating the first case of the joined state in the other direction D2 opposite to the one direction D1 to the second case 33. COPYRIGHT: (C)2005,JPO&NCIPI