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1. 发明公开

EP4187560A1 RARE EARTH MAGNET AND PRODUCTION METHOD THEREOF 审中-公开
公开(公告)号：EP4187560A1
公开(公告)日：2023-05-31
申请号：EP22208018.6
申请日：2022-11-17
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA , Nichia Corporation
发明人： ITO, Masaaki , HIRAOKA, Motoki , TABUCHI, Reimi , MAEHARA, Hisashi , KUME, Michiya
IPC分类号： H01F1/059 , H01F1/055 , H01F41/02
摘要： A Sm-Fe-N-based rare earth magnet more resistant to demagnetization than ever before in an environment where an external magnetic field is applied, particularly at high temperatures, and a production method thereof are provided.
The present disclosure presents a production method of a rare earth magnet, including preparing a coated magnetic powder, compression-molding the coated magnetic powder in a magnetic field to obtain a magnetic-field molded body, pressure-sintering the magnetic-field molded body to obtain a sintered body, and heat-treating the sintered body, and a rare earth magnet obtained by the method. D 50 of the magnetic powder in the coated magnetic powder is 1.50 µm or more and 3.00 µm or less, the content ratio of the zinc component in the coated magnetic powder is 3 mass% or more and 15 mass% or less, and the heat treatment temperature is 350°C or more and 410°C or less.

2. 发明公开

EP3690901A1 COMPOSITE COMPONENT COMPRISING RING-SHAPED BONDED MAGNET AND METHOD OF MANUFACTURING THE SAME 有权
公开(公告)号：EP3690901A1
公开(公告)日：2020-08-05
申请号：EP20164257.6
申请日：2018-04-26
申请人： NICHIA CORPORATION
发明人： YOSHIDA, Rie , ABE, Masahiro , KUME, Michiya , IHARA, Kohei , TADA, Shuichi
IPC分类号： H01F1/08 , H01F1/113 , H01F41/02 , B22F3/22 , B22F7/08
摘要： The present invention relates to a composite component including a metal component (1) having a substantially cylindrical shape or a substantially annular shape, and a ring-shaped bonded magnet (2) disposed on the outer periphery of the metal component (1), the ring-shaped bonded magnet (2) containing a thermoplastic resin (4), magnetic particles (3), and rubber particles (5, 6).

3. 发明授权

EP3396685B1 COMPOSITE COMPONENT COMPRISING RING-SHAPED BONDED MAGNET AND METHOD OF MANUFACTURING THE SAME 有权
公开(公告)号：EP3396685B1
公开(公告)日：2020-06-03
申请号：EP18169460.5
申请日：2018-04-26
申请人： NICHIA CORPORATION
发明人： YOSHIDA, Rie , ABE, Masahiro , KUME, Michiya , IHARA, Kohei , TADA, Shuichi
IPC分类号： H01F41/02 , H01F1/08 , H01F1/113 , B22F3/22 , B22F7/08 , B22F8/00

4. 发明公开

EP3002854A2 BONDED MAGNET AND PRODUCTION METHOD THEREOF 有权
标题翻译：粘结磁体及其生产方法
公开(公告)号：EP3002854A2
公开(公告)日：2016-04-06
申请号：EP15187343.7
申请日：2015-09-29
申请人： Nichia Corporation
发明人： YOSHIDA, Rie , KUME, Michiya , IHARA, Kohei , ICHIMORI, Taku
IPC分类号： H02K1/27 , H02K15/03 , H01F13/00
CPC分类号： H01F41/0266 , H01F7/021 , H01F41/0273
摘要： A bonded magnet is provided which includes first and second components 10A and 10B. The first and second components 10A and 10B have first and second non-action surfaces 11 and 13, and first and second action surfaces 12 and 14 that intersect them, respectively. First and second flux groups 21 curve inside the components from the first and second non-action surfaces 11 and 13 to the first and second action surfaces 12 and 14, respectively. The areas of the non-action surfaces are greater than the action surfaces. The flux densities on the action surfaces are higher than the non-action surfaces. The pole on the first non-action surface 11 is opposite to the second non-action surface. The non-action surfaces 11 and 13 are coupled to each other. The first and second flux groups 21 and 22 continuously extend from one to another.
摘要翻译：提供包括第一和第二部件10A和10B的粘结磁体。第一和第二部件10A和10B分别具有第一和第二非作用表面11和13以及分别与它们相交的第一和第二作用表面12和14。第一和第二磁通量组21在分别从第一和第二非作用表面11和13到第一和第二作用表面12和14的部件内弯曲。非动作表面的面积大于动作表面。作用表面上的通量密度高于非作用表面。第一非作用表面11上的杆与第二非作用表面相对。非作用表面11和13彼此连接。第一和第二通量组21和22从一个连续延伸到另一个。

5. 发明公开

EP3396685A1 COMPOSITE COMPONENT COMPRISING RING-SHAPED BONDED MAGNET AND METHOD OF MANUFACTURING THE SAME 有权
公开(公告)号：EP3396685A1
公开(公告)日：2018-10-31
申请号：EP18169460.5
申请日：2018-04-26
申请人： NICHIA CORPORATION
发明人： YOSHIDA, Rie , ABE, Masahiro , KUME, Michiya , IHARA, Kohei , TADA, Shuichi
IPC分类号： H01F1/08 , H01F1/113 , H01F41/02 , H01F7/02 , B22F1/00
摘要： The present invention relates to a composite component including a metal component (1) having a substantially cylindrical shape or a substantially annular shape, and a ring-shaped bonded magnet (2) disposed on the outer periphery of the metal component (1), the ring-shaped bonded magnet (2) containing a thermoplastic resin (4), magnetic particles (3), and rubber particles (6).

6. 发明公开

EP3002854A3 BONDED MAGNET AND PRODUCTION METHOD THEREOF 有权
标题翻译： GEBUNDENER MAGNET UND DESSEN HERSTELLUNGSVERFAHREN
公开(公告)号：EP3002854A3
公开(公告)日：2016-07-27
申请号：EP15187343.7
申请日：2015-09-29
申请人： Nichia Corporation
发明人： YOSHIDA, Rie , KUME, Michiya , IHARA, Kohei , ICHIMORI, Taku
IPC分类号： H02K1/27 , H02K15/03 , H01F13/00
CPC分类号： H01F41/0266 , H01F7/021 , H01F41/0273
摘要： A bonded magnet is provided which includes first and second components 10A and 10B. The first and second components 10A and 10B have first and second non-action surfaces 11 and 13, and first and second action surfaces 12 and 14 that intersect them, respectively. First and second flux groups 21 curve inside the components from the first and second non-action surfaces 11 and 13 to the first and second action surfaces 12 and 14, respectively. The areas of the non-action surfaces are greater than the action surfaces. The flux densities on the action surfaces are higher than the non-action surfaces. The pole on the first non-action surface 11 is opposite to the second non-action surface. The non-action surfaces 11 and 13 are coupled to each other. The first and second flux groups 21 and 22 continuously extend from one to another.
摘要翻译：提供了包括第一和第二部件10A和10B的粘结磁体。第一和第二部件10A和10B分别具有与其相交的第一和第二非作用表面11和13以及第一和第二作用表面12和14。第一和第二通量组21分别在第一和第二非作用表面11和13内的部件内弯曲到第一和第二作用表面12和14。非作用面的面积大于动作面。作用表面上的通量密度高于非作用表面。第一非作用表面11上的极与第二非作用表面相反。非作用表面11和13彼此连接。第一和第二通量组21和22连续地从一个延伸到另一个。

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