A driven portable device (100,101,102) for harvesting small fruits from a plant by causing a vibration or a shaking movement of said plant, said device comprising: - a support comprising a pole equipped with a handle portion at an end thereof; - a couple of comb-like elements (3',3") pivotally mounted to said support through respective hinges (7',7"), said hinges (7',7") having respective fixed portions and rotatable portions (33',33"), wherein said comb-like elements (3',3") comprise: - respective elongated base members (30',30") extending along respective longitudinal axes (31',31"); - respective arrays of rods extending from said elongated base members (30',30") oppositely to said support, wherein said longitudinal axes (31',31") are substantially coplanar arranged in a movement plane (α), so that said comb-like elements are placed beside each other if observed transversally to said longitudinal axes (31',31"), - a drive unit mounted to said support, characterized in that said hinges (7',7") have a same rotation axis substantially orthogonal to said movement plane (α), in that respective tang portions (32',32") extend from said elongated base members (30',30"), away from said movement plane (α), said tang portions comprising said respective rotatable portions (33',33") of said hinges (7',7"), so that said hinges (7',7") have rotation planes (β',β") each at a predetermined distance from said movement plane (α) and opposite to each other with respect to said movement plane (α), and in that said drive unit is arranged for causing each of said rotatable portions (33',33") of said hinges (7',7"), and therefore each of said comb-like elements (3',3"), to perform rotational alternated movements between two limit angular positions with respect to said rotation axis. - a support comprising a pole equipped with a handle portion at an end thereof; - a couple of comb-like elements (3',3") pivotally mounted to said support through respective hinges (7',7"), said hinges (7',7") having respective fixed portions and rotatable portions (33',33"), wherein said comb-like elements (3',3") comprise: - respective elongated base members (30',30") extending along respective longitudinal axes (31',31"); - respective arrays of rods extending from said elongated base members (30',30") oppositely to said support, wherein said longitudinal axes (31',31") are substantially coplanar arranged in a movement plane (α), so that said comb-like elements are placed beside each other if observed transversally to said longitudinal axes (31',31"), - respective elongated base members (30',30") extending along respective longitudinal axes (31',31"); - respective arrays of rods extending from said elongated base members (30',30") oppositely to said support, - a drive unit mounted to said support, characterized in that said hinges (7',7") have a same rotation axis substantially orthogonal to said movement plane (α), in that respective tang portions (32',32") extend from said elongated base members (30',30"), away from said movement plane (α), said tang portions comprising said respective rotatable portions (33',33") of said hinges (7',7"), so that said hinges (7',7") have rotation planes (β',β") each at a predetermined distance from said movement plane (α) and opposite to each other with respect to said movement plane (α), and in that said drive unit is arranged for causing each of said rotatable portions (33',33") of said hinges (7',7"), and therefore each of said comb-like elements (3',3"), to perform rotational alternated movements between two limit angular positions with respect to said rotation axis. characterized in that said hinges (7',7") have a same rotation axis substantially orthogonal to said movement plane (α), in that respective tang portions (32',32") extend from said elongated base members (30',30"), away from said movement plane (α), said tang portions comprising said respective rotatable portions (33',33") of said hinges (7',7"), so that said hinges (7',7") have rotation planes (β',β") each at a predetermined distance from said movement plane (α) and opposite to each other with respect to said movement plane (α), and in that said drive unit is arranged for causing each of said rotatable portions (33',33") of said hinges (7',7"), and therefore each of said comb-like elements (3',3"), to perform rotational alternated movements between two limit angular positions with respect to said rotation axis.