A star disk for a rotor of a current-excited machine has a separately produced switching ring which includes a plurality of contact elements embedded in a first plastic material, which are configured so as to be connected to respective rotor windings of the rotor or to a slip ring of the current-excited machine, and which is retained on a base body of the star disk by overmolding with a second plastic material.

A star disk for a rotor of a current-excited machine has a separately produced switching ring which includes a plurality of contact elements embedded in a first plastic material, which are configured so as to be connected to respective rotor windings of the rotor or to a slip ring of the current-excited machine, and which is retained on a base body of the star disk by overmolding with a second plastic material.

A stator (1) includes a stator core (10), a coil (20), a conducting portion (60), and an insulating resin (40). The stator core (10) has an annular shape. The coil (20) includes a protruding portion (29) that protrudes to one axial side more than an end portion at the one axial side of the stator core (10). A conducting portion (60) is connected to the protruding portion (29). The insulating resin (40) includes a press-fit groove (50) between the insulating resin (40) and the protruding portion (29). The conducting portion (60) is disposed in a state in which the conducting portion (60) is press-fitted into the press-fit groove (50) and pressed against the protruding portion (29).

A stator (1) includes a stator core (10), a coil (20), a conducting portion (60), and an insulating resin (40). The stator core (10) has an annular shape. The coil (20) includes a protruding portion (29) that protrudes to one axial side more than an end portion at the one axial side of the stator core (10). A conducting portion (60) is connected to the protruding portion (29). The insulating resin (40) includes a press-fit groove (50) between the insulating resin (40) and the protruding portion (29). The conducting portion (60) is disposed in a state in which the conducting portion (60) is press-fitted into the press-fit groove (50) and pressed against the protruding portion (29).

An electric pump includes a motor housing, a stator located in the motor housing and a rotor assembly circumferentially surrounding the stator. The motor housing is vacuum-impregnated and the rotor assembly is traversed by a stationary running axle pressed into the motor housing or into a stiffening disc connected to the motor housing.

An electric pump includes a motor housing, a stator located in the motor housing and a rotor assembly circumferentially surrounding the stator. The motor housing is vacuum-impregnated and the rotor assembly is traversed by a stationary running axle pressed into the motor housing or into a stiffening disc connected to the motor housing.

A method for producing a stator includes: a coil preparation step of preparing a coil in which an insulating coating is formed on a conductor; a stator core preparation step of preparing a stator core around which the coil is wound; an insulating coating peeling step of peeling off the insulating coating at a portion of the coil to be welded; a carbonization step of carbonizing a surface of an end portion of the insulating coating on a side facing conductor exposed by the peeling; a coil arrangement step of arranging the coil on the stator core; a welding step of welding the conductors exposed by the peeling in a plurality of the coils; and an electrodeposition coating step of performing electrodeposition coating on the exposed conductor and the carbonized surface of the insulating coating in each of the plurality of coils using a resin material.

A method for producing a stator includes: a coil preparation step of preparing a coil in which an insulating coating is formed on a conductor; a stator core preparation step of preparing a stator core around which the coil is wound; an insulating coating peeling step of peeling off the insulating coating at a portion of the coil to be welded; a carbonization step of carbonizing a surface of an end portion of the insulating coating on a side facing conductor exposed by the peeling; a coil arrangement step of arranging the coil on the stator core; a welding step of welding the conductors exposed by the peeling in a plurality of the coils; and an electrodeposition coating step of performing electrodeposition coating on the exposed conductor and the carbonized surface of the insulating coating in each of the plurality of coils using a resin material.