초록 ▼

A multi-function grass-cutting head (100), of the type intended to be associated with a motor to rotate around an axis of rotation (X) thereof, including a peripheral area (103) which extends around the axis of rotation (X) and at least one supporting portion (104) for at least one cutting element (

A multi-function grass-cutting head (100), of the type intended to be associated with a motor to rotate around an axis of rotation (X) thereof, including a peripheral area (103) which extends around the axis of rotation (X) and at least one supporting portion (104) for at least one cutting element (105) provided on the peripheral area (103). The head also includes structure (106) for adjusting the angular position of the supporting portion (104) of the at least one cutting element (105), around an axis of adjustment (Y), transverse to the axis of rotation (X) of the head.

대표청구항 ▼

1. A multi-function grass-cutting head, comprising: an axis of rotation of said head;a cutting element;a casing comprising a disk-shaped body, said disk-shaped body comprising a central fixing area for a power shaft of a motor of the grass-cutting head, said disk-shaped body further comprising a per

1. A multi-function grass-cutting head, comprising: an axis of rotation of said head;a cutting element;a casing comprising a disk-shaped body, said disk-shaped body comprising a central fixing area for a power shaft of a motor of the grass-cutting head, said disk-shaped body further comprising a peripheral area which extends around said axis of rotation; andat least one supporting portion connected to at least said cutting element for supporting said cutting element, said at least one supporting portion being provided in an area of said peripheral area;an axis of adjustment of an angular position of said supporting portion, said axis of adjustment being transverse to said axis of rotation of the head;a means for adjusting the angular position of said supporting portion and said cutting element relative to said casing, around said axis of adjustment to adjust an inclination of said cutting element. 2. The grass-cutting head according to claim 1, wherein said disk-shaped body comprises a first part associated with said peripheral area, said supporting portion being connected to a second part, said first part being non-rotatably fixed relative to said second part, wherein an engagement/disengagement means is provided mutually on said first part and said second part for fixing said second part in a non-rotatably fixed position when said first part and said second part are an engaged state and for providing relative rotation of said second part, relative to said first part, when said first part and said second part are in a disengaged state. 3. The grass-cutting head according to claim 2, wherein said second part is prevented from moving in an axial direction when said first part and said second part are in said engaged state, said second part being movable in the axial direction when said first part and said second part are in said disengaged state such that said second part is rotatable relative to said first part to adjust the angular position of said cutting element and said supporting portion, wherein at least a portion of said first part and at least a portion of said second part are located in an interior space of said disk-shaped body. 4. The grass-cutting head according to claim 3, wherein an elastic means is in contact with said first part and said second part for opposing axial sliding of said second part on said first part when said first part and said second part are in said engaged state. 5. The grass-cutting head according to claim 2, wherein said engagement/disengagement means comprises at least one engagement tooth associated with one of said first part and said second part, and a plurality of engagement seats distributed around said axis of adjustment, defined on another one of said second part and said first part. 6. The grass-cutting head according to claim 2, wherein said first part is produced in a housing defined in a casing of the head and said second part is housed in said housing. 7. The grass-cutting head according to claim 5, wherein walls of a housing are at least partly cylindrical in shape and said second part comprises a cylindrical portion adapted to couple rotationally with said cylindrical shape of the housing, on said cylindrical portion of said second part there being produced a plurality of said engagement seats, on said walls of said housing there being provided said at least one engagement tooth for said seats. 8. The grass-cutting head according to claim 1, further comprising: a hinging means of said at least one supporting portion in said peripheral area of the head in such a manner as to oscillate freely around an axis which extends from a bottom upward when the axis of rotation of the head is oriented vertically. 9. The grass-cutting head according to claim 2, wherein said first part is hinged to a casing of the head, in such a manner that an assembly formed by said first part and said second part is adapted to oscillate freely around an axis which extends from a bottom upward when the axis of rotation of the head is oriented vertically; preferably said axis of oscillation being substantially parallel to the axis of rotation of the head. 10. The grass-cutting head according to claim 4, wherein said elastic means comprises at least one elastic element a first end of which abuts against a first surface defined on said first part and a second end abuts against a second surface of said second part, said second part comprising a third surface adapted to abut against a corresponding fourth surface of said first part, said fourth surface being opposite said cutting element with respect to said first surface. 11. The grass-cutting head according to claim 2, wherein said first part comprises a cylindrical through hole coaxial with said axis of adjustment, and said second part comprises, in series, a head, a cylindrical stem inserted in said cylindrical hole and an enlarged base arranged at an end of said stem and arranged opposite said head with respect to said first part; preferably said at least one cutting element being supported through, and/or on, said head. 12. The grass-cutting head according to claim 5, wherein said at least one engagement tooth and said plurality of engagement seats distributed along a circumference coaxial with said axis of adjustment, defined on said second part or said first part, are provided respectively on an outer face of one of said first part and said second part and on an enlarged base of another one of said first part and said second part, at least a portion of said at least one engagement tooth being arranged in one of said engagement seats when said first part and said second part are in said engaged state to prevent said second part from rotating relative to said first part, said at least one engagement tooth being located at a spaced location from said plurality of engagement seats when said first part and said second part are in said disengaged state to allow said second part to rotate relative to said first part. 13. The grass-cutting head according to claim 2, wherein said at least one cutting element is hinged to said second supporting part according to an axis of oscillation transverse to said axis of adjustment. 14. The grass-cutting head according to claim 1, wherein said cutting element comprises at least one cutting line and/or one blade, said disk-shaped body defining at least a portion of an interior space, said disk-shaped body comprising a body portion located in said interior space, at least a portion of said support being located in said interior space, said portion of said support being detachably connected to said body portion, wherein said cutting element remains connected to said disk-shaped body when said portion of said support is connected to said body portion and when said portion of said support is detached from said body portion, said portion of said support being rotatable relative to said body portion when said portion of said support is detached from said body portion. 15. The grass-cutting head according to claim 1, wherein said at least one cutting element comprises a blade and one or more lines or teeth which project from a body of said blade from an opposite position with respect to a cutting edge of the blade and adapted to act as teeth of a rotary brush. 16. The grass-cutting head according to claim 6, wherein walls of said housing are at least partly cylindrical in shape and said second part comprises a cylindrical portion adapted to couple rotationally with said shape of the housing, on said cylindrical portion of said second part there being produced a plurality of engagement seats, on said walls of said housing there being provided at least one engagement tooth for said seats. 17. The grass-cutting head according to claim 8, wherein a first part is hinged to a casing of the head, in such a manner that an assembly formed by said first part and a second part is adapted to oscillate freely around an axis which extends from the bottom upward when the axis of rotation of the head is oriented vertically, said axis of oscillation being substantially parallel to the axis of rotation of the head. 18. The grass-cutting head according to claim 9, wherein an elastic means comprises at least one elastic element a first end of which abuts against a first surface defined on said first part and a second end abuts against a second surface of said second part, said second part comprising a third surface adapted to abut against a corresponding fourth surface of said first part, said fourth surface being opposite said cutting element with respect to said first surface. 19. The grass-cutting head according to claim 11, wherein at least one engagement tooth and a plurality of engagement seats distributed along a circumference coaxial with said axis of adjustment, defined on said second part or said first part, are provided respectively on an outer face of said first part and on said enlarged base or vice versa. 20. A multi-function grass-cutting head, comprising: an axis of rotation of said head;a cutting element;a casing comprising a disk-shaped body, said disk-shaped body comprising a central fixing area for a power shaft said disk-shaped body further comprising a peripheral area which extends around said axis of rotation and at least one supporting portion for at least said cutting element provided on said peripheral area;an axis of adjustment of an angular position of said supporting portion, said axis of adjustment being transverse to said axis of rotation of the head;a means for adjusting the angular position of said supporting portion, around said axis of adjustment, wherein said means for adjusting the angular position of said supporting portion comprises a first part associated with said peripheral area of the head, and a second part adapted to support said cutting element, each of said first part and said second part comprising engagement/disengagement means for producing, when in an engaged state of said first part and said second part, at least two stable positions for said second part around said axis of adjustment, and for enabling relative rotation of said first part and said second part when the first part and the second part are disengaged, wherein the cutting element is connected to said casing when the first part and the second part are disengaged.