Switched reluctance motor having a hall sensor assembly

Patent metadata

Field	Value
Publication number	US-11205940-B2
Application number	US-201816649664-A
Country	US
Kind code	B2
Filing date	Sep 28, 2018
Priority date	Dec 6, 2017
Publication date	Dec 21, 2021
Grant date	Dec 21, 2021

Abstract

A switched reluctance motor includes an upper housing; a stator assembly including a stator core coupled to the upper housing; a rotor assembly located inside the stator assembly and comprising a rotor core rotating together with a shaft; a lower housing coupled to a lower part of the stator core; a sensor magnet assembly coupled to an upper part of the shaft and rotating together with the shaft; and a hall sensor assembly installed inside the upper housing and installed at one side of the sensor magnet assembly.

First claim

The invention claimed is:

1. A switched reluctance motor, comprising:
an upper housing ( 11 );
a stator assembly ( 20 ) comprising a stator core ( 21 ) coupled to the upper housing;
a rotor assembly ( 30 ) located inside the stator assembly ( 20 ) and comprising a rotor core ( 31 ) rotating together with a shaft ( 32 );
a lower housing ( 12 ) coupled to a lower part of the stator core ( 21 );
a sensor magnet assembly ( 40 ) coupled to an upper part of the shaft ( 32 ) and rotating together with the shaft; and
a hall sensor assembly ( 50 ) installed inside the upper housing ( 11 ) and installed at one side of the sensor magnet assembly ( 40 ),
wherein the sensor magnet assembly ( 40 ) comprises:
a mold cover ( 41 ) having a shaft coupling part ( 41 a ) coupled to the shaft ( 32 ); and
a ring magnet ( 42 ) received in the mold cover ( 41 ),

wherein, at an outer circumferential surface of the mold cover ( 41 ), the ring magnet ( 42 ) is formed in an axial longitudinal direction to be exposed to the outside, and a plurality of L-shaped open parts ( 41 b ) formed to be extended to the lower surface of the mold cover ( 41 ) is formed,
wherein each of the plurality of L-shaped open parts has a structure for opening a part of side and lower surfaces of the ring magnet ( 42 ) to the mold cover ( 41 ) surrounding an entire of the ring magnet ( 42 ).

2. The switched reluctance motor of claim 1 ,
wherein the hall sensor assembly ( 50 ) comprises a hall sensor case ( 51 ) receiving a printed circuit board ( 52 ),
wherein a hall IC ( 52 a ) installed on the printed circuit board ( 52 ) is inserted in a hall IC insertion part ( 51 a ) formed to protrude to a lower part of the hall sensor case ( 51 ), and the hall IC insertion part ( 51 a ) is located at one side of the sensor magnet assembly ( 40 ).

3. The switched reluctance motor of claim 2 , wherein the printed circuit board ( 52 ) received in the hall sensor case ( 51 ) is sealed by a sealing material ( 54 ).

Assignees

• New Motech Co Ltd

Inventors

• Jang Jeong Cheol
• Yang Gyeong Sik
• Kim Nam Youn

Classifications

• H02K5/10

  with arrangements for protection from ingress, e.g. water or fingers · CPC title

• H02K29/08 Primary

  using magnetic effect devices, e.g. Hall-plates, magneto-resistors (H02K29/12 takes precedence) · CPC title

• H02K11/215 Primary

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title

• H02K19/06

  Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motors · CPC title

• H02K2211/03

  Machines characterised by circuit boards, e.g. pcb · CPC title