Lg Electronics Inc.

Jin Hong

Hyojin Ko

Yongdae Kim

Joohang Kang

Cheol Han

Junggu Lee

Kwangyong Jang

Hyeonho Ha

Hyoung Uk Nam

Jaekwang Nam

An electric motor includes a stator and a rotor which is rotatable with respect to the stator. The stator has: a stator core; and a stator coil which is wound around the stator core. The stator core has: a yoke which is segmented in the circumferential direction of the stator; an assembly connector which is coupled between two yokes which are continuously disposed along the circumferential direction of the stator; and teeth which protrude along the radial direction of the stator from the inner surface of the assembly connector.

Electric motor, cleaner having same and electric motor manufacturing method

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An electric motor assembly includes a stator and a rotor configured to rotate relative to the stator. The stator includes a stator core including a yoke that has a ring shape and a plurality of teeth radially coupled to an inner surface of the yoke, a stator coil that is wound around the stator core, and an insulator disposed between the stator core and the stator coil. The insulator includes a yoke insulator that is coupled to the yoke with a first coupling tolerance defined between the yoke insulator and the plurality of tooth insulators, and a plurality of tooth insulators that are coupled to the plurality of teeth, respectively, with a second coupling tolerance defined between the yoke and the plurality of teeth. The first coupling tolerance is less than the second coupling tolerance.

Electric motor assembly

The present disclosure relates to a stator which prevents motor efficiency from deteriorating while increasing divided contact areas of divided teeth. According to the present disclosure, provided is a stator characterized by comprising a back yoke having a certain thickness in the radial direction, and divided teeth coupled to the back yoke, wherein: the back yoke includes recessed grooves into which the divided teeth fit; the divided teeth include a winding portion forming a section on which a coil is wound and a coupling portion extending from the winding portion and fitting into the grooves; and the length of the back yoke in the radial direction at the coupling portion is greater than half the thickness of the back yoke.

Stator with split teeth with coupling portion to back yoke

Various embodiments relate to a motor in which a structure of an insulator is improved. The motor includes an insulator module coupled to a top face of a stator core. The insulator module includes: each power terminal unit connected to each of 3-phases power lead wires; a neutral terminal unit connected to a neutral point of a coil; and an insulator body for achieving insulations between the power and neutral terminal units and the stator core, and between the power and neutral terminal units, wherein the power terminal unit and the neutral terminal unit are positioned at different vertical levels.

Motor

Growing community of inventors

Seoul, South Korea

Jin Hong