| 摘要 |
The device consists, on the one hand, of a plate (1) fastened into the building opening and having on its periphery a certain number of projections (3, 4, 5) defining a uniform female profile and, on the other hand, of a piece (14) integral with the motor (13) and whose outline defines a male profile mating with the female profile. This profiled part (14) can nest in various angular positions in the profile of the plate (1). The two profiles are equipped with a groove (8, 17) interrupted between the projections (3, 4, 5) and in the hollows of the profiled part (16). In the groove (8) of the plate (1) is mounted a ring having, on the inside, notches permitting locking together of the two profiles or their release from each other, according to the angular position of this ring. <IMAGE> |
