In a method for mounting a prefabricated form-wound coil or tooth-wound coil on a layered laminated core to form a stator segment or stator, the form-wound coil or tooth-wound coil is insulated with insulation. Laminates are punched and stacked to form partial laminated cores and/or a laminated core, with the partial laminated cores being spaced apart from one another by spacers and forming substantially axially extending open slots of the laminated core. The form-wound coil or tooth-wound coil are radially inserted into the slots such as to embrace a tooth of the laminated core, and a removable auxiliary element is placed at an axial end face of the laminated core to protect the insulation of the form-wound coil or tooth-wound coil as the form-wound coil or tooth-wound coil is radially inserted into the slots. The auxiliary element is radially removed and repositioned on a further tooth of the laminated core.

A stator core comprises a stack and a resin portion. The stack comprises an annular yoke portion, a plurality of tooth portions, and a plurality of slots. The resin portion covers an inner wall surface of a slot of the plurality of slots. The resin portion protrudes outward relative to an end surface of the stack in a height direction of the stack. The resin portion is formed on at least a part of an end surface of the tooth portion so as to extend from the inner wall surface of the slot around the end surface of the tooth portion. A resin end portion of the resin portion is disposed on the end surface of the stack and a corner of the resin end portion is formed as an inclined surface including a planar surface or curved surface.

Stator for an electrical machine, comprising a stator core with stator slots which are formed along an axial direction with respect to a center axis of the stator and are arranged in a manner distributed in a circumferential direction with respect to the center axis, a hairpin winding with a large number of hairpin element arrangements which are arranged in the stator slots and each emerge from the end side of the stator core, and at least one insulation apparatus with a body in which a large number of passage openings which are arranged in a manner distributed in the circumferential direction are formed; wherein a respective hairpin element arrangement passes through one of the passage openings and the insulation apparatus specifies a distance of the hairpin element arrangement from an edge of the stator slot which receives the hairpin element arrangement.

Electric machines, such as motors, may include an armature and a field component, and at least one of the armature or the field component may include a laminated structure having a plurality of slots into which a plurality of conductive elements are positioned. Additionally, a polymeric insulation layer may be formed directly on the laminated structure at least within the plurality of slots.

The present invention relates to a stator core for improving the fixing properties of a magnet wire, and a motor in which the same is applied. Provided is a stator core which comprises a protrusion pattern part for fixing the distal end portion of a magnet wire, and thus eliminates a process of fixing the wire using a separate member during a wiring process, thereby improving processability and inhibiting an insulating film of the magnet wire from being damaged by an external force such as vibration.

A varnish injection system includes a rotatable mount, an electric motor supported by the rotatable mount, the electric motor including a stator and a wire, and a varnish injector including a base and a nozzle extending from the base, the nozzle defining an axis extending vertically therethrough. The electric motor is rotatable by the rotatable mount to a nonzero angle relative to the axis extending vertically through the nozzle. The nozzle is arranged to deposit varnish into a gap defined between the stator and the wire when the rotatable mount rotates the electric motor to the nonzero angle.

A varnish injection system includes a varnish injector including a base, a nozzle extending from the base, and a spacer disposed on the nozzle, and an electric motor including a stator, a wire, and an insulating layer between the stator and the wire. The nozzle is arranged to deposit varnish between the stator and the insulating layer. The nozzle and the stator define a gap therebetween when the spacer engages the stator.

An electric motor includes a stator, an insulating layer, and a wire. The stator includes a first circular laminate and a second circular laminate. The first laminate includes a first finger having a distal end extending toward a center point of the first circular laminate. The second laminate includes a second finger having a distal end extending toward a center point of the second circular laminate. The first and second fingers define a wall. The distal ends of the first and second fingers define a space therebetween. The insulating layer extends along the wall and into the space. The insulating layer is spaced from the distal end of the second finger. The wire extends along the insulating layer below the distal ends of the first and second fingers.

A varnish application system includes an electric motor, a clamp, and a varnish injector. The clamp includes a beam, a first end plate fixed to the beam and engageable to a first end of the electric motor, and a second end plate releasably connected the beam and engageable to a second end of the electric motor. The varnish injector is arranged to apply varnish to the electric motor when the clamp engages the electric motor.

Provided is a waterproof fan which includes: a rotor; a stator including a winding; a circuit board supplying power to the winding; a resin frame including an undersurface located on one side of a rotation axis of a rotor, and a housing space opening on the other side of the rotation axis, to house the circuit board; a waterproofing resin portion covering the stator and closing an opening of the housing space; a bearing rotatably supporting the rotating shaft portion; and a cylindrical metal bearing holder extending along the rotation axis and supporting the bearing, in which the frame includes a tubular holder protection portion extending from the undersurface to the other side of the rotation axis and covering at least a part of an outer peripheral surface of the bearing holder, and the holder protection portion separates the stator from the bearing holder.