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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 11201527 B1

PDFFull Text
Date of Patent:
Dec. 14, 2021

Filed:

Apr. 10, 2017

Device, method, and jig for manufacturing magnet embedded core

Applicant:

Kuroda Precision Industries Ltd., Kanagawa, JP;

Inventors:

Osamu Fukuyama, Hadano, JP;

Tomoaki Murayama, Nagano, JP;

Tetsuya Nishizawa, Chikuma, JP;

Masanobu Ikeda, Chikuma, JP;

Kazuo Nakamura, Chikuma, JP;

Assignee:

KURODA PRECISION INDUSTRIES LTD., Kanagawa, JP;

Attorney:

Dority & Manning, P.A.

Primary Examiner:

Peter Dungba Vo

Assistant Examiner:

Jose K Abraham

Int. Cl.
CPC ...
H02K 15/12 (2006.01); H02K 15/03 (2006.01); H02K 1/27 (2006.01); H02K 1/28 (2006.01); B29C 43/18 (2006.01); H02K 11/20 (2016.01); H02K 11/21 (2016.01); H02K 11/30 (2016.01); B29C 45/03 (2006.01); B29C 45/14 (2006.01); B29C 45/76 (2006.01); B29C 45/80 (2006.01); F16H 25/20 (2006.01); H02K 7/06 (2006.01); B29K 101/10 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
H02K 15/125 (2013.01); B29C 43/18 (2013.01); B29C 45/03 (2013.01); B29C 45/14467 (2013.01); B29C 45/7653 (2013.01); B29C 45/80 (2013.01); F16H 25/20 (2013.01); H02K 1/276 (2013.01); H02K 1/28 (2013.01); H02K 7/06 (2013.01); H02K 11/20 (2016.01); H02K 11/21 (2016.01); H02K 11/30 (2016.01); H02K 15/03 (2013.01); H02K 15/12 (2013.01); B29C 2043/182 (2013.01); B29C 2945/76006 (2013.01); B29C 2945/76083 (2013.01); B29C 2945/76568 (2013.01); B29K 2101/10 (2013.01); B29K 2105/251 (2013.01); B29K 2995/0008 (2013.01); B29L 2031/7498 (2013.01); F16H 2025/2053 (2013.01);
Abstract

To prevent creation of unnecessary resin when fixing a magnet with resin, a manufacturing method for manufacturing a magnet embedded core comprises: a placing step of placing the rotor core on a mounting table such that an end surface of the rotor core is in contact with the mounting table; a resin charging step of charging the resin in solid state into the magnet insertion hole; a melting step of inciting the resin in the magnet insertion hole; a magnet inserting step of inserting the magnet into the magnet insertion hole; a closure step of closing the opening of the magnet insertion hole remote from the mounting table; and a resin pressurizing step of pressurizing the molten resin that has flowed into a buffer chamber formed in the mounting table from the opening of the magnet insertion hole on a side of the mounting table following the closure step.

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