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OwnerGuido VALENTINIinventor
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The invention refers to a plate-like backing pad member (9) for use with a hand-held and hand-guided power tool (1). The backing pad member (9) is adapted for releasable attachment to a driving shaft (27) of the power tool (1) by means of a mechanical form fit connection arrangement comprising a protrusion member (16) connected to the driving shaft (27) and a recess member (17) connected to the backing pad member (9). The form fit connection is releasable in an axial direction running parallel to a rotational axis (13) of the backing pad member (9). The protrusion member (16) is held in the axial direction within the recess member (17) by means of an axial holding arrangement. It is suggested that the axial holding arrangement comprises at least one permanent magnet (40) on the one hand and at least one ferromagnetic element (41) or at least one further permanent magnet on the other hand exerting a magnetic force for holding the protrusion member (16) in the axial direction within the recess member (17). The at least one permanent magnet (40) or the at least one ferromagnetic element (41) or the at least one further permanent magnet is located in or makes part of the recess member (17).
Plate-like backing pad member (9) for use with a hand-held and hand-guided power tool (1) comprising a housing (2) with a driving motor (11) located therein for actuating a driving shaft (27) upon operation of the driving motor (11), the plate-like backing pad member (9) having a rotational axis (13), wherein the plate-like backing pad member (9) is adapted for releasable attachment to the driving shaft (27) by means of a mechanical form fit connection arrangement comprising at least one protrusion member (16) directly or indirectly connected to the driving shaft (27) and at least one recess member (17) connected to the plate-like backing pad member (9), the mechanical form fit connection arrangement being adapted for providing a torque proof connection between the at least one protrusion member (16) and the at least one recess member (17) in a plane extending perpendicular to the rotational axis (13) of the plate-like backing pad member (9), wherein the mechanical form fit connection arrangement is releasable in an axial direction running parallel to the rotational axis (13) of the plate-like backing pad member (9), wherein the at least one protrusion member (16) is held in the axial direction within the at least one recess member (17) by means of an axial holding arrangement, characterized in that the axial holding arrangement comprises at least one permanent magnet (40) and either least one ferromagnetic element (41) or at least one further permanent magnet exerting a magnetic force for holding the at least one protrusion member (16) in the axial direction within the at least one recess member (17), wherein the at least one permanent magnet (40), or the at least one ferromagnetic element (41), or the at least one further permanent magnet is located in or makes part of the at least one recess member (17).
Hand-held and hand-guided power tool (1) comprising a housing (2) with a driving motor (11) located therein for actuating a driving shaft (27) upon operation of the driving motor (11) and further comprising a backing pad member (9) performing a working movement about its rotational axis (13) in a working plane extending perpendicular to its rotational axis (13) upon actuation of the driving shaft (27), wherein the backing pad member (9) is attached to the driving shaft (27) by means of a mechanical form fit connection arrangement comprising at least one protrusion member (16) directly or indirectly connected to the driving shaft (27) and at least one recess member (17) connected to the backing pad member (9), the mechanical form fit connection arrangement being adapted for providing a torque proof connection between the at least one protrusion member (16) and the at least one recess member (17) in a plane extending perpendicular to the rotational axis (13) of the backing pad member (9), wherein the mechanical form fit connection arrangement is releasable in an axial direction running parallel to the rotational axis (13) of the backing pad member (9), wherein the at least one protrusion member (16) is held in the axial direction within the al least one recess member (17) by means of an axial holding arrangement, characterized in that the axial holding arrangement comprises at least one permanent magnet (40) and either at least one ferromagnetic element (41) or at least one further permanent magnet exerting a magnetic force for holding the at least one protrusion member (16) in the axial direction within the at least one recess member (17), wherein at least part of the axial magnetic holding arrangement (40, 41) forms an integral part of at least part of the mechanical form fit connection arrangement (16, 17).
Dependencies are inferred from the claim text.