US 11,722,020 B2
Stator of a brushless motor
Fu Hsiang Chung, Taichung (TW); Hong Fang Chen, Taichung (TW); Shih Wei Hung, Taichung (TW); Wei Ting Chen, Taichung (TW); and Yu Chin Lin, Taichung (TW)
Assigned to Techway Industrial Co., Ltd., Taichung (TW)
Filed by Techway Industrial Co., Ltd., Taichung (TW)
Filed on Apr. 26, 2021, as Appl. No. 17/240,174.
Claims priority of application No. 109114913 (TW), filed on May 5, 2020.
Prior Publication US 2021/0351637 A1, Nov. 11, 2021
Int. Cl. H02K 1/14 (2006.01); H02K 3/28 (2006.01); H02K 3/38 (2006.01); H02K 3/52 (2006.01); H02K 15/00 (2006.01); H02K 5/22 (2006.01)
CPC H02K 1/146 (2013.01) [H02K 3/28 (2013.01); H02K 3/38 (2013.01); H02K 3/522 (2013.01); H02K 5/225 (2013.01); H02K 15/0062 (2013.01); H02K 15/0068 (2013.01); H02K 2203/06 (2013.01); H02K 2203/09 (2013.01); H02K 2203/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A stator of a brushless motor, the stator comprising:
an iron core comprising:
a core body having two open ends opposite to each other, and an exterior annular surface and an interior annular surface opposite to each other; and
multiple stator poles mounted on the interior annular surface of the core body and spaced apart from each other;
a bobbin mounted on one of the open ends of the core body and comprising:
a substrate having an upper surface and a lower surface opposite to each other;
multiple pole covers formed on an inner annular surface of the bobbin;
at least three solder-pad connectors integratedly protruding from the upper surface of the substrate, wherein each one of the solder-pad connectors has a solder-pad-connector slot;
at least one neutral connector mounted on the upper surface of the substrate, wherein the least one neutral connector each has a neutral-connector slot;
at least three magnetic-pole solder pads respectively mounted in the solder-pad-connector slots of the solder-pad connectors; and
at least one neutral solder pad mounted in the neutral-connector slot of the at least one neutral connector; and
a winding assembly comprising at least one coil, wherein
the winding assembly is formed by one wire wound on the multiple stator poles and the at least three solder-pad connectors; and
the winding assembly is electrically connected to the at least three magnetic-pole solder pads and the at least one neutral solder pad;
wherein
the at least three solder-pad connectors include a first connector, a second connector, and a third connector;
the first connector, the second connector, and the third connector are sequentially and circularly mounted on the upper surface of the substrate;
the first connector, the second connector, and the third connector each respectively have the magnetic-pole solder pad;
the first connector has a first winding pillar integratedly and upwardly protruding from the upper surface of the substrate; and
after the winding assembly is electrically connected to the magnetic-pole solder pad in the first connector, and the winding assembly is wound on one of the stator poles that is corresponding to one of the pole covers; the winding assembly is then wound through the first winding pillar and the neutral connector and electrically connected to the neutral solder pad, and the winding assembly is then wound on another stator pole corresponding to another pole cover through a side of the third connector; the winding assembly is then wound through the third connector and electrically connected to the magnetic-pole solder pad in the third connector; the winding assembly is then wound through the neutral connector and electrically connected to the neutral solder pad; the winding assembly is then wound on another stator pole corresponding to another pole cover through a side of the neutral connector; and the winding assembly is wound through the second connector and then electrically connected to the magnetic-pole solder pad in the second connector.