Coil segments of the same phase are inserted into each group of circumferentially consecutive three slots. Assuming that the grouped three slots are A, B, and C, and six groups are U1 to U6, respectively, and that slot y of group Ux are slot Uxy, a coil starting from the slot U1A is wired to pass through one turn of a stator in the order of slots U1A.fwdarw.U2B.fwdarw.U3B.fwdarw.U4C.fwdarw.U5C.fwdarw.U6A, and connected to slot U1A of the next turn. In this turn, coil segments with a wide straddle width are used for the connections of U1A.fwdarw.U2B and U3B.fwdarw.U4C, and a coil segment with a narrow straddle width is used for the connection of U5C.fwdarw.U6A.

A linear electromechanical actuator includes a housing, an electric motor, an output member, and a roller screw drive arranged within the housing. The roller screw drive includes a rod and a screw connected to each other to form the output member. The rod has an axial opening at the end proximal to the screw, and the screw has a connecting section at the end proximal to the rod with a plurality of longitudinal teeth arranged along the perimeter of the connecting section and embedded into the surface of the axial opening. The actuator further includes a retainer engaged with the rod and the screw for preventing a relative longitudinal movement thereof. Methods are also provided for assembling the output element of the actuator.

A linear electromechanical actuator includes a housing, an electric motor, an output member, and a roller screw drive arranged within the housing. The roller screw drive includes a rod and a screw connected to each other to form the output member. The rod has an axial opening at the end proximal to the screw, and the screw has a connecting section at the end proximal to the rod with a plurality of longitudinal teeth arranged along the perimeter of the connecting section and embedded into the surface of the axial opening. The actuator further includes a retainer engaged with the rod and the screw for preventing a relative longitudinal movement thereof. Methods are also provided for assembling the output element of the actuator.

A component for an electric machine includes a flat region in which an electric line runs when the component is integrated into the electric machine and which includes a sharp edged structure. A polymer layer adheres to the flat region without further aid such as to mask the sharp-edged structure and thereby protect from damage the electric line on the flat region. The polymer layer is made of cured plastic adhesive and jetted onto the flat region in the form of threads, such that the threads are spin-coated on top of one another in the form of overlapping loops and form a network structure which spans the sharp-edged structure.

A component for an electric machine includes a flat region in which an electric line runs when the component is integrated into the electric machine and which includes a sharp edged structure. A polymer layer adheres to the flat region without further aid such as to mask the sharp-edged structure and thereby protect from damage the electric line on the flat region. The polymer layer is made of cured plastic adhesive and jetted onto the flat region in the form of threads, such that the threads are spin-coated on top of one another in the form of overlapping loops and form a network structure which spans the sharp-edged structure.

An assembly method and a fixing device for an electric motor are provided. The assembly method includes: carrying out preparation, wherein a stator of the electric motor is segmented, in the circumferential direction, into at least two stator segments, and a rotor of the electric motor is segmented, in the circumferential direction, into at least two rotor segments; carrying out pre-assembly, wherein the stator segments and the rotor segments are coaxially fixed to fixing devices to form segment modules, and predetermined gaps are maintained radially between the stator segments and the rotor segments; carrying out adjustment, wherein at least two fixing devices are moved and adjusted such that the stator segment and the rotor segment of the adjacent segment modules are mutually attached and aligned with each other along segmental end faces in the circumferential direction; carrying out assembly; and carrying out dismounting, and dismounting the fixing devices.

The present invention is provided with: an insulation holder formed of a thermoplastic resin material and having a first opening; a wire connection ring formed of a thermoplastic resin material and having a second opening; and a joining component inserted astride in the first opening and the second opening, the joining component being formed of a metal material having a higher melting point than those of the thermoplastic resin materials, the joining component having a higher stiffness than those of the insulation holder and the wire connection ring, wherein a welded part is formed by welding in at least a part of an area where each of the insulation holder and the wire connection ring has contact with the joining component.

A method for manufacturing a rotor of a rotary electric machine, including a stack of magnetic laminations defining the slots in which bars made from a first electrically conducting material are received, in which method a second electrically conducting material, different from the first, is injected using an injection machine, from the front of the laminations stack, the bars being held at their rear end against the pressure associated with the injection by a positioning tool that passes through a cavity used for forming a short-circuiting ring at the rear of the laminations stack.

A method for manufacturing a rotor of a rotary electric machine, including a stack of magnetic laminations defining the slots in which bars made from a first electrically conducting material are received, in which method a second electrically conducting material, different from the first, is injected using an injection machine, from the front of the laminations stack, the bars being held at their rear end against the pressure associated with the injection by a positioning tool that passes through a cavity used for forming a short-circuiting ring at the rear of the laminations stack.

A method for manufacturing a rotor for an electric machine with a contactless power transmission system, wherein an end winding cover is arranged on one end face of a laminated core of the rotor. The invention provides that a secondary unit (SEC) of the power transmission system is integrated in the end winding cover and, as a result, after the end winding cover has been arranged, the secondary unit (SEC) is held on the rotor indirectly via the end winding cover.