The invention relates to a stator of an electric machine, comprising:a laminated stator core (3), which has a stator axis (2), comprises a plurality of stator teeth (5) and a plurality of stator slots (6) formed between the stator teeth (5), and is formed by a plurality of stacked stator laminations (4); and electrical conductor elements (10), which run through the stator slots (6) of the laminated stator core (3) and are provided in order to form an electrical winding, more particularly a plug-in winding. In each of the stator slots (6), a slot insulator (11), more particularly a slot insulation paper, is provided in order to electrically insulate the conductor elements (10) from the laminated stator core (3). The stator laminations (4) each have a plurality of lamination teeth (7) and a lamination yoke (8), which connects the lamination teeth (7). The stator teeth (5) of the laminated stator core (3) are each formed by stacked lamination teeth (7) of the stator laminations (4). The stator is characterized in that, in the laminated stator core (3), at least one stator lamination (4) is provided which is rotated in peripheral direction with respect to the stator axis (2), relative to other of the stator laminations (4) of the laminated stator core (3), such that, in each stator slot (6) of the laminated stator core (3), a lamination tooth portion (12) of one of the lamination teeth (7) of said stator lamination protrudes into the stator slot (6).

Disclosed is a stator of a motor having a stator core having a plurality of teeth protruded therefrom and a slot formed between the adjacent teeth; and at least one or more L-shaped coupling members adapted to be attached to given positions on a side peripheral surface of the stator core, each L-shaped coupling member having a flat surface portion and a side wall portion, the flat surface portion 2a having a fastening hole formed thereon.

A method of manufacturing a stator includes a pressing step of punching an iron core piece forming part from a steel sheet by press molding, a mounting step of mounting insulating paper on each of a plurality of protruding portions arranged in a circumferential direction on an outer peripheral surface of a columnar roll member rotating about a central axis and extending along the central axis, and a stacking step of spirally winding the iron core piece forming part around the outer peripheral surface of the roll member while deforming it in one direction in a width direction by rotating the roll member in a state where the protruding portion and the insulating paper are inserted into a slot, and stacking the iron core piece forming part in a thickness direction.

A laminated core includes a first connecting portion and a first groove. The first connecting portion connects back yoke portions in the stacking direction on an outer peripheral surface of a portion of a back yoke staked portion, the portion including an end portion on one side in the extending direction of an iron core piece. The first groove is located in a direction opposite to a first direction that is a direction from one side edge toward the other side edge in the iron core piece across the one side edge in the extending direction of the iron core piece with respect to the first connecting portion, and extends in the stacking direction of the back yoke stacked portion on the outer peripheral surface of the back yoke stacked portion.

Provided is an electric motor which includes an adhesively-laminated core for a stator having excellent productivity and high mechanical strength and that is thus capable of reducing vibration and noise of an electric motor and suppressing iron loss. The adhesively-laminated core for a stator includes electrical steel sheets laminated on each other and each coated on both sides with an insulation coating, and an adhesion part disposed between the electrical steel sheets adjacent to each other in a stacking direction and configured to cause the electrical steel sheets to be adhered to each other. All sets of the electrical steel sheets adjacent to each other in the stacking direction are adhered by the adhesion part, an adhesive forming the adhesion part includes a fast-curing type adhesive and a thermosetting adhesive, and the adhesion part is partially provided between the electrical steel sheets adjacent to each other in the stacking direction.

A method for applying varnish to a stator of an electric motor includes depositing varnish onto an outer laminate of the stator, accumulating the deposited varnish with a ridge on the outer laminate, and directing the accumulated varnish into a slot of the outer laminate with the ridge.

The present disclosure provides a rotor structure, an electric motor and a rotor manufacturing method. The rotor structure includes a plurality of rotor sheets (100) and a rotating shaft. The rotor sheets (100) are stacked in sequence along an axial direction of the rotor structure. Each of the rotor sheets (100) is provided with a shaft hole (20), a first slot (111), and first filling slots (121) at both ends of the first slot (111). The first slot (111) extends in a direction of a direct axis (3) of the rotor structure and includes slot sections (1110) at opposite sides of the shaft hole (20). The rotating shaft passes through the shaft hole (20) of the plurality of rotor sheets (100). The first slot (111), the first filling slots (121) and the rotating shaft form a first flux barrier layer (101).

A laminated core including a plurality of electrical steel sheets stacked on each other, and adhesion parts which are provided between the electrical steel sheets adjacent to each other in an axial direction thereof and adhering the electrical steel sheets to each other, in which each of the electrical steel sheets includes an annular core back part, and a plurality of tooth parts which extend from the core back part in a radial direction of the core back part and are disposed at intervals in a circumferential direction of the core back part, and each of the tooth parts of the electrical steel sheets has an adhesion region provided with the adhesion part having a belt shape extending in the circumferential direction.

A stator structure is provided and includes a plurality of first lamination layers, a plurality of second lamination layers, two third lamination layers and two oil spraying rings. The second lamination layers are sandwiched in between the first lamination layers. The second lamination layer located in the middle of the stator structure is sandwiched in between the two third lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. Another stator structure is provided and includes a plurality of first lamination layers, a second lamination layer and two oil spraying rings. The second lamination layer is sandwiched in between two first lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. By means of the arrangement of the aforesaid stator structure, the invention can effectively improve heat dissipating effect for oil cooling.

A deburring gauge system that includes a gauge set, a gauge holder secured to the gauge set, and a controller. The gauge set is configured to be at least partially inserted into a slot set of a stator. Each gauge part of the gauge set includes a body having a shape that corresponds to a shape of a respective slot of the slot set. The body of each gauge part includes an abrasive portion extending along a length of the body. The controller is in communication with the gauge holder and configured to move the gauge holder in a first direction toward the stator so that the abrasive portion of the body is at least partially inserted into the respective slot and move the gauge holder in a second direction away from the stator so that the abrasive portion of the body is removed from the respective slot.