Title:
BRUSHLESS MOTOR
Document Type and Number:
Japanese Patent JP2022176000
Kind Code:
A
Abstract:
To provide a brushless motor capable of reducing a thickness with a simplified structure.SOLUTION: A brushless motor includes: a stator 20 in which a coil 24 is wound around a plurality of teeth 23; a rotor 30 that includes a rotor core 32, a back yoke 33, and a driving magnet 34, which are rotatably supported by a rotational shaft 31 supported by a first bearing 40 and a second bearing 41 having a diameter larger than that of the first bearing 40 in an inner side of the stator 20; an encoder 60 that includes an encoder magnet 61 provided at the rotor core 32 and an encoder IC62 containing a magnetic field detection element; and a cylindrical housing 50 that supports the first bearing 40 and the second bearing 41. The rotor core 32 includes a spigot part 324 which is fitted with the second bearing 41 on an outer peripheral side. One part of the cylindrical housing 50 enters the spigot part 324, and a height H of the cylindrical housing 50 is set so as to be smaller than a sum of a width Ba of the first bearing 40 and a width Bb of the second bearing 41.SELECTED DRAWING: Figure 6
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Inventors:
KOBAYASHI YOSHIAKI
KITADA YUSUKE
HARUYAMA TETSUYA
KITADA YUSUKE
HARUYAMA TETSUYA
Application Number:
JP2021093746A
Publication Date:
November 25, 2022
Filing Date:
June 03, 2021
Export Citation:
Assignee:
PS TOKKI INC
International Classes:
H02K29/08; H02K5/173