Back to results
US 12,444,523 B2Granted
Rare earth magnet assembly and preparation method
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYuta Kuribara, Kazuhito Akada
Life of this patent
Estimating the term…
Abstract
An assembly of rare earth magnet pieces is prepared by placing two rare earth magnet pieces at their side surfaces in abutment so that top surfaces of magnet pieces are disposed adjacent to each other across the abutment interface, and forming a coating on the adjacent surfaces of magnet pieces, the coating continuously extending across abutment interface and over adjacent surfaces for thereby tightly joining the abutted magnet pieces together.
Claims8
A method for preparing a rare earth magnet assembly, comprising the steps of:
- placing two rare earth magnet pieces so that two rare earth magnet pieces are abutted at their side surfaces to define an abutment interface, and top surfaces of the magnet pieces are disposed adjacent to each other across the rim of the abutment interface;
- applying a UV-curable resin composition on at least a portion of the adjacent top surfaces of the magnet pieces, so that the UV-curable resin composition continuously extends across the rim of the abutment interface and over the adjacent top surfaces;
- and
- curing the UV-curable resin composition by irradiating UV radiation to the UV-curable resin composition to form a coating of cured resin to join the magnet pieces together so that the two rare earth magnet pieces are directly contacted to each other at the abutment interface, and the coating has a pencil hardness of at least 6H according to JIS K 5600.
1 more element
A rare earth magnet assembly comprising
- at least two rare earth magnet pieces which are abutted at their side surfaces to define an abutment interface, and
- a coating of cured resin formed on at least a portion of adjacent top surfaces of the magnet pieces and continuously extending across the rim of the abutment interface and over the adjacent top surfaces to join the magnet pieces together, wherein the at least two rare earth magnet pieces are directly contacted to each other at the abutment interface,
- the coating has a pencil hardness of at least 6H according to JIS K 5600, and
- the coating is formed by curing a UV-curable resin composition by irradiating UV radiation to the UV-curable resin composition.
1 more element
Dependencies are inferred from the claim text.