| 摘要 |
An opening/closing device ( 1 ) is described in the form of an articulated pentalateral with two centres of rotation ( 17,18 ) connected to each other by means of gears, able to open/close a flap door ( 2 ) of an item of furniture ( 3 ) and comprising a support ( 4 ) to which are hinged at least a first and a second arm ( 5, 6 ) coupled to each other by means of two toothed areas ( 7, 8 ) formed on the outer surfaces of the ends of the first arm ( 5 ) and of the second arm ( 6 ), which are hinged to the support ( 4 ) by means of pivots which form the above centres of rotation ( 17, 18 ). One end of the element ( 9 ) which carries the flap door ( 2 ) is hinged to the other end of the second arm ( 6 ) by means of a pivot forming the axis of rotation ( 11 ) of the flap door ( 2 ): on opening of the flap door ( 2 ) the second arm ( 6 ) is made to rotate towards the outside of the item of furniture ( 3 ) by rotation of the first arm ( 5 ), shifting the axis of rotation ( 11 ) of the flap door ( 2 ) towards the outside of the item of furniture ( 3 ) and allowing opening thereof even if the flap door ( 2 ), when closed, is superimposed on the upper part of the frame of the item of furniture ( 3 ).
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