US 11,895,947 B2
Mower with motor cooling arrangement
Kenta Nishimura, Wako (JP); Yasumi Fukuzumi, Wako (JP); Yoshihiro Takahashi, Wako (JP); Koki Tsuruda, Wako (JP); and Fumio Minami, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Appl. No. 16/955,101
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
PCT Filed Dec. 22, 2017, PCT No. PCT/JP2017/046242
§ 371(c)(1), (2) Date Jun. 18, 2020,
PCT Pub. No. WO2019/123659, PCT Pub. Date Jun. 27, 2019.
Prior Publication US 2020/0383267 A1, Dec. 10, 2020
Int. Cl. A01D 34/81 (2006.01); A01D 34/68 (2006.01); A01D 34/78 (2006.01); A01D 75/18 (2006.01); H02K 9/04 (2006.01); H02K 5/20 (2006.01); A01D 34/82 (2006.01); A01D 101/00 (2006.01)
CPC A01D 34/81 (2013.01) [A01D 34/68 (2013.01); A01D 34/828 (2013.01); A01D 75/18 (2013.01); H02K 5/207 (2021.01); H02K 9/04 (2013.01); A01D 34/78 (2013.01); A01D 2101/00 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A lawn mower including a motor configured to rotate a cutter blade, the lawn mower comprising:
a cutter housing including an inner hole through which an output shaft of the motor is inserted; and
a motor cover disposed above the cutter housing with a space interposed therebetween, the motor cover covering the motor,
wherein the motor cover has formed therein at least one cooling air exit port configured to discharge cooling air in the motor cover to outside, and
the at least one cooling air exit port is positioned further inward than a peripheral wall of the motor cover,
the at least one cooling air exit port is positioned further outward than the inner hole of the cutter housing in a radial direction of the motor, thereby the at least one cooling air exit port being covered by the cutter housing from below, and
part of cooling air flowing out of the at least one cooling air exit port flows into the cutter housing via the space between the cutter housing and the motor cover.