| 摘要 |
In a rotating shutter (1) supported by hinges (2) comprising two members (3, 4) hinged to each other and positioned one above the other, of which the lower (4) is joined to a fixed structure (5) and the upper (3) is joined to the shutter (1) itself, the supporting surfaces (4a, 3a) of the two members (4, 3) which are in contact with each other, have respectively concave parts (4b) and protruding parts (3b) substantially complementary to each other, the protruding parts (3b) of a member (3) being contained by the concave parts (4b) of the other (4) when the shutter (1) is in closed position, in such a way that a relative rotation between the two members (3, 4) causes a vertical shift between these equal to the height (h) of the protruding parts (3b). <MATH> <MATH> |
