VENTILATION DEVICE

摘要

A ventilation device comprises a fan propeller (3) and a motor (5) with an external rotor (7b) for driving the propeller (3). The propeller (3) comprises a central hub (11) having a frontal wall (17) and an internal lateral wall (21) defining an accommodating housing for the external rotor (7b). The external rotor (7b) has a front part (9) and a lateral wall (9″) arranged bearing against the internal lateral wall (21) of the central hub (11). The ventilation device further comprises means (27) for snap-fitting the external rotor (7b) to the central hub (11) that are borne on the one hand by the central hub (11) and on the other hand by the external rotor (7b).