BLDC BLDC motor with anti-departure jaws to combine split permanent magnets

摘要

The present invention relates to a BLDC motor having a separation prevention jaw to combine the divided permanent magnets, and more particularly, to a fixed structure of a permanent magnet used in the motor. A coil is wound around a stator core to generate an electromagnetic force. It is composed of a rotor made of a permanent magnet and a rotor core. In order to increase the motor output, a divided permanent magnet with high magnetic energy density must be used. In order to couple a permanent magnet with high magnetic force to the rotor core, a separation prevention jaw is provided on the core. It is related to a permanent magnet with high magnetic energy density stably fixedly coupled to a rotor core by making it possible to combine permanent magnets with high magnetic force up and down by mechanically preventing an emergency in the rotation direction of the permanent magnet. In addition, the rotor core is difficult to detect the rotation position of the rotor as much as the width of the yoke separation prevention jaw between the divided permanent magnets by using the permanent magnet with high magnetic force divided up and down in the yoke including the separation prevention jaw. It relates to a sensor magnet having an undivided ring shape on the lower side to sense the position of a stable rotor to enable stable motor rotation. In addition, according to another aspect of the present invention, Joule heat is generated when a current flows through the coil wound around the stator core, and since Joule heat may cause damage to the motor and deterioration of characteristics, an exhaust fan and a heat dissipation housing are installed to reduce Joule heat. This makes it possible to secure product reliability.