Abstract: An electric motor with a deep-drawn motor housing including a flange adjoining an opening, the flange being polygonal or substantially polygonal in cross section with flange corners each including a screw-on point, each of the flange corners includes two embossments which define a bending edge of the motor housing between the screw-on point and an opening of the motor housing.

Abstract: A method of winding a stator of a polyphase brushless DC motor, the stator including uniformly spaced stator teeth which project inwardly from a stator core and leave a cylindrical inner region exposed. The teeth are wound in pairs with a winding wire to form a winding pair, the winding of each winding pair being performed by, starting from a wire beginning of a winding wire, winding a first stator tooth in a first direction, guiding the winding wire to a second stator tooth which immediately follows the first stator tooth in a first circumferential direction, and winding the second stator tooth in a second direction opposite to the first direction. The winding pairs are structured to be supplied with current so that a north pole and a south pole are opposite each other in the stator in the circumferential direction.

Abstract: An electric motor includes three busbars in contact at end surfaces thereof and including ring-segment-shaped base portions to provide electrical connection of the busbars. The base portion of a first busbar is in a first plane and the base portion of a second busbar is in a second plane. The base portion of the first busbar extends clockwise from the terminal of the first busbar and the base portion of the second busbar extends counterclockwise from the terminal of the second busbar. Terminals of the first and second busbars are spaced apart with the terminal of the third busbar between the first and third terminals. The third busbar includes a first region extending clockwise from its terminal and lying in the second plane and a second region extending counterclockwise from its terminal and lying in the first plane.

Abstract: The invention relates to a rotor unit for a brushless electric motor with an annular rotor core surrounding a central axis, a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction, a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder, wherein the holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion, wherein the shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements, wherein the head portion lies on the peripheral faces in a contact area, which contact area is s

Abstract: A rotor unit for a brushless electric motor, incudes an annular rotor core surrounding a central axis, a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction, a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder. The holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion. The shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements.

Abstract: An electric motor with stator includes pairs of windings. Winding wire ends of the pairs of windings are electrically contacted at end surfaces with three busbars to define three phases. The three busbars include power source connection terminals which are located adjacent to one another, and the second and third busbars extending over an angular range of approximately 210°, having a same contact scheme with four contact points following one another in the circumferential direction to contact the winding ends and are offset from one another by approximately 120° in the circumferential direction, and the first busbar has a different contact scheme. The first busbar includes a first section and a second section, three contact points located in the first section, a further contact point being located in the second section.

Abstract: An electric motor includes a deep-drawn motor housing including a base and an opening opposite the base, the opening being adjoined by a flange. The flange includes, adjoining the opening, at least one partial formation introduced in an axial direction and including a bearing surface of a component of the electric motor. The bearing surface is arranged in its axial position in the axial direction with respect to a surface in the bottom of the motor housing in the deep-drawing process, and the bearing surface is arranged in its radial position in a radial direction by the opening as a reference surface.

Abstract: An electric motor with a deep-drawn motor housing including a flange adjoining an opening, the flange being polygonal or substantially polygonal in cross section with flange corners each including a screw-on point, each of the flange corners includes two embossments which define a bending edge of the motor housing between the screw-on point and an opening of the motor housing.

Abstract: An electric motor includes a rotor, a rotor shaft on which a rotor core is seated, and magnets connected radially outwards to the rotor core which is mounted rotatably about an axis of rotation in a ball bearing. The ball bearing includes a bearing inner ring and a stator which surrounds the rotor on an outside. At least the rotor core is encapsulated and injection-molded to define the rotor. The projections define an axial support of the bearing inner ring and are injection-molded on an end surface of the rotor which is adjacent to the ball bearing.

Abstract: An electric motor includes a rotor which is rotatably supported about an axis of rotation in a bearing which is accommodated in an end shield, and a stator which externally surrounds the rotor and includes wound coils. The wound coils include at least one winding wire including winding wire end portions electrically contacted at ends with bus bars of a bus bar assembly, the busbar assembly being arranged on a top side of the stator and the end shield being seated on a top side of the busbar assembly, the end shield and the busbar assembly being directly connected to one another by a bayonet lock.

Abstract: An electric motor includes a rotor rotatable about a rotation axis, and a stator that externally surrounds the rotor and includes a stator core and coils wound on the stator core. The windings are defined by a winding wire including winding wire end portions that are electrically contacted at end surfaces thereof by busbars held at least partially in a busbar holder, and include a ground contact to connect the stator to a ground potential. The ground contact includes a first end region received in a longitudinal groove on an outside of the stator core.

Abstract: A busbar unit for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.

Abstract: A busbar assembly for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.

Abstract: The invention relates to a rotor unit for a brushless electric motor with an annular rotor core surrounding a central axis, a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction, a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder, wherein the holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion, wherein the shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements, wherein the contact region of the shaft portion in the radial direction of the side faces has an

Abstract: The invention relates to a rotor unit for a brushless electric motor with an annular rotor core surrounding a central axis, a plurality of magnet arrangements that are arranged around the rotor core in a circumferential direction of the rotor and that each have a convex outer peripheral face, an inner contact face, two axial end faces and two side faces pointing in the circumferential direction, a magnet holder having a number of holding portions which are each arranged between two adjacent magnet arrangements and are moulded onto a ring portion of the magnet holder, wherein the holding portions are configured T-shaped in a cross section along a plane running transversely to the central axis and each have a shank portion and a head portion, wherein the shank portion lies on the side faces of the magnet arrangements in a contact region and the head portion lies on the peripheral faces of the magnet arrangements, wherein the head portion lies on the peripheral faces in a contact area, which contact area is s

Abstract: A busbar assembly for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.

Abstract: An electric motor includes a rotor rotatable about a rotation axis, and a stator that externally surrounds the rotor and includes a stator core and coils wound on the stator core. The windings are defined by a winding wire including winding wire end portions that are electrically contacted at end surfaces thereof by busbars held at least partially in a busbar holder, and include a ground contact to connect the stator to a ground potential. The ground contact includes a first end region received in a longitudinal groove on an outside of the stator core.

Abstract: A busbar unit for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.