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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 10886803 B1

PDFFull Text
Date of Patent:
Jan. 05, 2021

Filed:

Jan. 31, 2017

Axial gap-type rotary electrical machine

Applicant:

Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;

Inventors:

Shuuichi Takahashi, Tokyo, JP;

Yasuei Yoneoka, Tokyo, JP;

Toshifumi Suzuki, Tokyo, JP;

Toru Sakai, Tokyo, JP;

Katsuyuki Yamazaki, Tokyo, JP;

Daisaku Takahashi, Tokyo, JP;

Daisuke Kurai, Tokyo, JP;

Jun Sakurai, Tokyo, JP;

Assignee:

Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Burton S Mullins

Int. Cl.
CPC ...
H02K 21/24 (2006.01); H02K 1/18 (2006.01); H02K 16/02 (2006.01); H02K 1/27 (2006.01); H02K 15/12 (2006.01); H02K 3/52 (2006.01);
U.S. Cl.
CPC ...
H02K 1/2793 (2013.01); H02K 1/182 (2013.01); H02K 16/02 (2013.01); H02K 21/24 (2013.01); H02K 3/522 (2013.01); H02K 15/12 (2013.01); H02K 2203/12 (2013.01);
Abstract

This axial gap-type rotary electrical machine has: a stator in which a plurality of core units each configured from a core, a coil, and a bobbin are disposed, centered around a rotating shaft, in an annular shape along the inner circumferential surface of a housing; and a rotor that is face-to-face with a cross-sectional surface of the core through a predetermined gap in a radial direction of the rotating shaft. The bobbin is formed in a cylindrical shape, has flange parts extending a predetermined amount in the outer circumferential direction at the top and bottom of the cylindrical shape, is provided with notch sections on the tip part in the inner circumferential direction of the flange part of the bobbin, and forms an acute angle. In addition, approximately circular notch sections are formed on adjacent side surface portions of the bobbin in the outer circumferential direction of the bobbin. Accordingly, when forming the stator by means of molding, a resin mold is made to easily flow, and damage to the bobbin of the core unit can be avoided.

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