公开(公告)号：US5200729A

公开(公告)日：1993-04-06

申请号：US479301

申请日：1990-02-07

申请人： Katsuji Soeda ,  Shuzo Otsuki ,  Masaru Wada

发明人： Katsuji Soeda ,  Shuzo Otsuki ,  Masaru Wada

IPC分类号： H01F7/02 ,  H01F13/00 ,  H02K1/27 ,  H02K15/03 ,  H02K41/03

CPC分类号： H01F13/003 ,  H01F7/021 ,  H02K1/2733 ,  H02K1/2793 ,  H02K15/03 ,  H02K41/03

摘要： Disclosed is a permanent magnet which is suitable for use for a field system of an electric motor or the like and which is constituted by a single piece of magnetic material in which S and N poles are alternately continuously formed through non-magnetic flux regions or weak magnetic flux regions interposed therebetween, and further disclosed is a magnetization apparatus for magnetizing such a permanent magnet. The magnetization apparatus comprises a first magnetic flux generation unit provided on one surface of a single piece of magnetic material for generating N-pole magnetic flux, a second magnetic flux generation unit provided adjacently to the first magnetic flux generation unit on the one surface for generating S-pole magnetic flux, and a third magnetic flux generation unit provided between the first and second magnetic flux generation unit on the one surface for passing therethrough part of magnetic flux generated by the first and second magnetic flux generation unit and for generating magnetic flux for canceling the magnetic flux passing through the third magnetic flux generation unit, whereby N and S poles are formed in domains of an object to be magnetized opposite to the first and second magnetic flux generation units and non-magnetic flux regions or weak magnetic flux regions are formed in domains of the object to be magnetized opposite to the third magnetic flux generation unit.

摘要翻译： 公开了一种适用于电动机等的场系的永磁体，其由单片磁性材料构成，其中S和N极通过非磁通区域或弱磁性交替连续形成 介于其间的磁通区域，并且还公开了一种用于磁化这种永磁体的磁化装置。 磁化装置包括：第一磁通产生单元，设置在单个磁性材料的一个表面上，用于产生N极磁通;第二磁通量产生单元，设置在第一磁通量产生单元的一个表面上，用于产生 S极磁通和第一磁通产生单元，其设置在一个表面上的第一和第二磁通产生单元之间，用于通过由第一和第二磁通产生单元产生的磁通的部分，并产生用于 抵消通过第三磁通产生单元的磁通量，从而在与第一和第二磁通量产生单元和非磁通区域或弱磁通量区域相对的待磁化对象的区域中形成N和S极 形成在与第三磁通产生单元相对的待磁化对象的域中。