A coil insertion device includes: a pair of delivery jigs respectively formed with slits into which a pair of side portions of a coil that are parallel with each other can be inserted; and a side portion inserting mechanism configured to push out the side portions inserted into the slits from the slits to insert the side portions into slots of a stator core, the slots facing the slits, the side portion inserting mechanism has: pushing blocks inserted into the slits; and a pushing block moving mechanism configured to move the pushing blocks in a depth direction of the slits.

A coil insertion device includes: a pair of delivery jigs respectively formed with slits into which a pair of side portions of a coil that are parallel with each other can be inserted; and a side portion inserting mechanism configured to push out the side portions inserted into the slits from the slits to insert the side portions into slots of a stator core, the slots facing the slits, the side portion inserting mechanism has: pushing blocks inserted into the slits; and a pushing block moving mechanism configured to move the pushing blocks in a depth direction of the slits.

A stator for a rotary electric machine includes a stator core, a stator winding, and a sensor unit. The stator has a hollow cylindrical shape and includes slots. The stator winding includes segment conductors respectively inserted in the slots. The sensor unit includes a sensor holding conductor, and a temperature sensor. The sensor holding conductor is welded to first and second segment conductors among the segment conductors. The temperature sensor is held by the sensor holding conductor. The sensor holding conductor includes first and second end portions, and a bent portion. The first end portion is welded to an end portion of the first segment conductor. The second end portion is welded to an end portion of the second segment conductor. The bent portion couples the first end portion and the second end portion to each other. The temperature sensor is held at an inner side of the bent portion.

The reliability of a rotating electrical machine is improved. A method for manufacturing a stator used in a rotating electrical machine includes: a first step of arranging a first segment coil and a second segment coil to face each other; a second step of processing the first segment coil to generate a bridge part that comes into contact with the second segment coil; and a third step of joining the bridge part and the second segment coil by laser welding.

A dynamoelectric rotary machine includes a stator, which has a winding system arranged in grooves disposed between teeth of a magnetically conductive body and a winding head on the end faces of the stator in each case. A rotor with a cage ring is arranged rotatably about an axis and during operation of the dynamoelectric rotary machine is in electromagnetic interaction in a motor-driven or generator-driven manner with the winding system of the stator arranged in the grooves by way of an air gap. Comb-type elements are disposed on the end faces of the stator. The comb-type elements assume an extensive intermediate space between the winding system projecting from the end faces of the stator, so that tonal noises which are produced during operation of such an electric machine are at least reduced.

A method used for producing rotors and stators of electric motors, including the production of connection wires, and comprises the following steps: Winding the coil windings (12), which comprise a plurality of individual wires (14), on a wire winder (28) to which the individual wires (14) are fed from a wire supply unit (16) via a wire guide 18, 20, 22), Depositing the coil windings (12) in a draw-in tool (36), Drawing the coil windings (12) into grooves of a stator (84) or rotor body, Combining the individual wires (14) in phases by means of slide-on tubes (52) to produce the connection wires of the stator or rotor in question. In order to be able to automate the production of the connection ends, which was previously carried out manually, it is proposed that the individual wires (14) of each coil winding (12) are fastened to each other in the region of the wire guide (18, 20, 22) in order to form winding ends (46) and winding beginnings (32), after the winding and before or during the depositing, the winding ends (46) and winding beginnings (32) of each coil winding (12) are fastened in first position holders (42, 44) arranged in certain positions with respect to the draw-in tool, and during the drawing of the coil windings (12) into the stator or rotor, the winding ends (46) and winding beginnings (32) are transferred from the first position holders (42, 44) into second position holders (90, 92) arranged in certain positions with respect to the stator body (84) or rotor body. The present invention also relates to a device for carrying out the aforesaid method.

The invention relates to a device for cutting to length conductor pieces, in particular hairpins, received in a stator core, including a receptacle for the stator core together with the conductor pieces received therein, the free ends of which protrude out of the stator core when in the received state, in particular in the direction of gravity, and a cutting unit which comprises cutting portions that are designed and arranged such that they can be moved toward one another in order to act in a cutting manner from two opposing sides on at least one conductor piece to be cut to length, and the longitudinal axis thereof, during a cutting process.

A stator may include a stator core and a coil. The stator core may include: a first portion; a second portion; and a first intermediate portion interposed between the first portion and the second portion in the axial direction. A first segment conductor and a second segment conductor may overly each other in a circumferential direction of the stator core hr a slot within an area of the first intermediate portion. A first side surface may include a first protrusion provided by the first intermediate portion protruding with respect to the first portion and the second portion. The first segment conductor and the second segment conductor may be held between the first protrusion and a second side surface such that the first, segment conductor and the second segment conductor are connected with each other.

A method to produce rotors or stators of electric machines having radial grooves into which webs of flat windings having parallel webs and winding heads connecting said webs being pulled, wherein a winding is produced on a rotating, strip-shaped flat former shorter than the winding such that windings are pulled off the former and transferred into a linear transfer device, which transports the windings to a removal position at which the windings are transferred into radial grooves of a rotor or of the transfer tool for transfer into radial grooves of a stator, wherein the former, the transfer device, and the rotor or the transfer tool being jointly rotated about an axis of rotation of the former when rotated to form windings.

A coil with a distributed winding formed from hairpins that each have two straight-line conductor portions arranged in different slots of a coil body. Contact regions shaped in circumferential direction adjoin the conductor portions at one axial end and are connected at the other axial end through a turning region. The contact regions have at the end remote of the coil body a connection portion that are aligned in radially extending rows. The contact regions of a layer are shaped in the same circumferential direction. A portion of the contact regions of an outer layer is deformed in radial direction to form an additional, and these contact regions are shaped in a circumferential direction opposite to the contact regions of the outer layer.