Invention Grant
- Patent Title: Axial gap motor
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Application No.: US17859483Application Date: 2022-07-07
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Publication No.: US12074489B2Publication Date: 2024-08-27
- Inventor: Takayuki Kobayashi , Hirotaka Kurita , Tatsuya Hagiwara , Takumi Sugimura
- Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
- Applicant Address: JP Iwata
- Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
- Current Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
- Current Assignee Address: JP Iwata
- Agency: Rabin & Berdo, P.C.
- Main IPC: H02K29/03
- IPC: H02K29/03 ; H02K1/16 ; H02K1/2713 ; H02K3/12 ; H02K3/34 ; H02K21/24

Abstract:
An axial gap motor having a rotor and a stator core. A plurality of pressed powder teeth extends in a radial direction of the stator core and each has a trapezoidal shape in which a circumferential length of a pressed-powder-tooth-radial-direction-outer-end portion is larger than a circumferential length of a pressed-powder-tooth-radial-direction-inner-end portion. The rotor includes a plurality of field magnets, each configured such that a circumferential length of a magnet-radial-direction-inner-end portion is greater than or equal to a circumferential length of a magnet-radial-direction-outer-end portion. When the rotor and the stator core rotate relative to each other about a rotation axis, a part of the field magnets first overlaps with pressed-powder-tooth-radial-direction-inner portions of pressed powder teeth, and while the field magnets are located at a q-axis position with respect to the pressed powder teeth, adjacent ones of the field magnets individually overlap with one pressed powder tooth.
Public/Granted literature
- US20220345018A1 AXIAL GAP MOTOR Public/Granted day:2022-10-27
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