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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11552514 B1

PDFFull Text
Date of Patent:
Jan. 10, 2023

Filed:

Aug. 02, 2021

Motor

Applicant:

Denso Corporation, Aichi-pref., JP;

Inventors:

Yoji Yamada, Hamamatsu, JP;

Koji Mikami, Kosai, JP;

Akihisa Hattori, Toyohashi, JP;

Seiya Yokoyama, Toyohashi, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Kilpatrick Townsend & Stockton LLP

Primary Examiner:

Naishadh N Desai

Int. Cl.
CPC ...
H02K 1/27 (2022.01); H02K 1/276 (2022.01); H02K 1/278 (2022.01); H02K 1/2706 (2022.01); H02K 3/28 (2006.01); H02K 21/16 (2006.01); H02P 25/024 (2016.01); H02K 1/24 (2006.01); H02K 1/2713 (2022.01); H02K 1/272 (2022.01); H02K 1/14 (2006.01); H02K 1/18 (2006.01); H02K 15/14 (2006.01);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01); H02K 1/24 (2013.01); H02K 1/2706 (2013.01); H02K 1/278 (2013.01); H02K 1/2773 (2013.01); H02K 3/28 (2013.01); H02K 21/16 (2013.01); H02P 25/024 (2016.02); H02K 1/148 (2013.01); H02K 1/185 (2013.01); H02K 1/272 (2013.01); H02K 1/2713 (2013.01); H02K 15/14 (2013.01); H02K 2213/03 (2013.01); H02P 2207/05 (2013.01);
Abstract

A motor includes a stator having a winding, and a rotor. The rotor rotates by receiving a rotational magnetic field generated by drive current supplied to the winding. The winding includes a first winding and a second winding, the first and second windings both being excited at the same timing by the drive current. The first winding and the second winding are connected in series. The rotor includes a first pole section and a second pole section. The second pole section faces the second winding at the rotation position of the rotor at which the first pole section faces the first winding. The magnetic force exerted on the stator by the second pole section is weaker than that exerted by the first pole section.

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