A coil member according to an embodiment comprises: a substrate having a first surface and a second surface opposite to the first surface; a first circuit pattern disposed on the first surface; and a plurality of bridge portions protruding from an end of the substrate, wherein the bridge portions are integrally formed with the substrate, and a shield layer is disposed on the bridge portions.

A stator for an electromagnetic machine having a plurality of electromagnets. Some or all of the electromagnets include a stack of laminations defining a tooth and a yoke segment, and an insulating bobbin surrounding a portion of the tooth of each lamination such that each lamination is held against adjacent laminations by the bobbin. The electromagnets also include electrically conductive windings surrounding a portion of the bobbin and a stator encapsulant fully encapsulating the bobbin and windings of the electromagnets.

A stator for an electromagnetic machine having a plurality of electromagnets. Some or all of the electromagnets include a stack of laminations defining a tooth and a yoke segment, and an insulating bobbin surrounding a portion of the tooth of each lamination such that each lamination is held against adjacent laminations by the bobbin. The electromagnets also include electrically conductive windings surrounding a portion of the bobbin and a stator encapsulant fully encapsulating the bobbin and windings of the electromagnets.

A method of balancing a rotor and/or fixing rotor components includes arranging a plurality of generally like laminations side by side in a stack to form at least a part of a rotor. The rotor has a rotational center axis and each of the laminations having a plurality of apertures that cooperate to form passages that extend axially along a length of the stack. In accordance with an aspect of the method, a polymer based fixation material is filled in the passages in a manner to fix the laminations together in the stack. With the fixation material, a sprue is formed, projecting from an axial face of the stack. In accordance with another aspect of the method, a weight of the sprue is adjusted to rotationally balance the rotor about the rotor center axis.

An electric motor for driving a hermetic compressor, wherein the stator comprises a stator core, which has bars, directed radially inward, and which are arranged evenly distributed about a circumference, on an inner side of the stator, which is substantially cylindrically shaped outward, wherein stator slots are formed between the bars, which are respectively adjacent in the circumferential direction, and wherein conducting wires are respectively wound into coils around the bars, and wherein each intermediate space between individual wires of a winding, between each winding and a base insulation, which is situated between the winding and the stator core, between the different coils, and between each winding and non-current-conducting housing parts and/or attachment parts of the stator, is filled with a potting compound as the insulating material, and wherein recesses for cooling ducts to cool the stator are formed within the insulating material.

An electric motor for driving a hermetic compressor, wherein the stator comprises a stator core, which has bars, directed radially inward, and which are arranged evenly distributed about a circumference, on an inner side of the stator, which is substantially cylindrically shaped outward, wherein stator slots are formed between the bars, which are respectively adjacent in the circumferential direction, and wherein conducting wires are respectively wound into coils around the bars, and wherein each intermediate space between individual wires of a winding, between each winding and a base insulation, which is situated between the winding and the stator core, between the different coils, and between each winding and non-current-conducting housing parts and/or attachment parts of the stator, is filled with a potting compound as the insulating material, and wherein recesses for cooling ducts to cool the stator are formed within the insulating material.

The invention relates to an electric motor having a rotatably mounted rotor magnet and a stator enclosing the rotor magnet, said stator comprising at least three coil windings and a winding carrier, wherein coil axes of the at least three coil windings are disposed radially to an axis of rotation of the rotor magnet in various radial directions. The coil windings of the electric motor are designed so that a gap that is parallel to the axis of rotation of the rotor magnet extends between at least two adjacent coil windings, in which at least one media line extending in the longitudinal direction is provided.

A method for fabricating a composite lens holder with low-mass conductive metal and high-precision placement thereof to enable smaller-scale fabrication includes the steps of forming a plastic lens holder as a matrix, laser etching an outer surface of the plastic lens holder to form surface patterns, and electroless plating of metal on the surface patterns to form an effective coil, thereby producing the composite lens holder. A voice coil motor and an electronic device which use such a composite lens holder are also disclosed.

A method for fabricating a composite lens holder with low-mass conductive metal and high-precision placement thereof to enable smaller-scale fabrication includes the steps of forming a plastic lens holder as a matrix, laser etching an outer surface of the plastic lens holder to form surface patterns, and electroless plating of metal on the surface patterns to form an effective coil, thereby producing the composite lens holder. A voice coil motor and an electronic device which use such a composite lens holder are also disclosed.

An electrical machine includes a rotor, which can be rotated about an axis of rotation, with which an axial direction is defined, and a stator having stator windings, a coolant distribution chamber and a coolant collecting chamber arranged axially at a distance thereto, the coolant distribution chamber fluidically communicates with the coolant collecting chamber for cooling the stator windings, a cooling duct and a stator winding are embedded in an electrically insulating plastic for thermal coupling, the stator has stator teeth which extend along the axial direction, are spaced apart from each other along a circumferential direction and bear the stator windings, the electrically insulating plastic is arranged together with the cooling duct and the stator winding in an intermediate space, and the electrically insulating plastic is formed by a first plastic mass of a first plastic material and by a second plastic mass of a second plastic material.