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1. 发明授权

US5734216A Magnet rotor for synchronous motor 失效
标题翻译：同步电机用磁铁转子
公开(公告)号：US5734216A
公开(公告)日：1998-03-31
申请号：US564623
申请日：1995-11-29
申请人： Hiyoshi Yamada , Shigenori Kinoshita , Takao Yanase , Kenji Endo , Hiroyuki Hirano
发明人： Hiyoshi Yamada , Shigenori Kinoshita , Takao Yanase , Kenji Endo , Hiroyuki Hirano
IPC分类号： H02K1/27 , H02K15/03 , H02K21/00
CPC分类号： H02K1/278 , H02K1/2733 , H02K15/03
摘要： A magnet rotor for a synchronous motor includes a yoke formed of a magnetic material. A generally cylindrical permanent magnet is disposed around the yoke magnet and has N and S poles alternately located in the circumferential direction of the permanent magnet. An adhesive is filled in the clearance between the outer peripheral surface of the yoke and the inner peripheral surface of the permanent magnet. The adhesive is hardened at a hardening temperature, which is around a maximum temperature encountered during operation of the motor to accomplish bonding between the yoke and the permanent magnet. The clearance between the yoke and the permanent magnet has a dimension L given by the following formula: L.gtoreq.(E.times..DELTA.L) / .sigma.s where E is a tensile elastic modulus of the adhesive; .DELTA.L is a change amount of the clearance upon thermal expansion or contraction; and .sigma.s is a tensile stress applied to the adhesive.
摘要翻译：用于同步电动机的磁体转子包括由磁性材料形成的磁轭。一般为圆柱形的永久磁铁围绕轭磁铁设置，并且N和S极交替地位于永磁体的圆周方向上。在磁轭的外周面和永磁体的内周面之间的间隙中填充有粘合剂。粘合剂在固化温度下硬化，硬化温度约为马达操作期间遇到的最大温度，以实现轭和永磁体之间的粘合。轭和永磁体之间的间隙具有由下式给出的尺寸L：L> / =（Ex DELTA L）/ sigma其中E是粘合剂的拉伸弹性模量; DELTA L是热膨胀或收缩时间隙的变化量; sigma是施加到粘合剂上的拉伸应力。

2. 发明授权

US5399311A Radial anisotropic ring magnet with a sinusoidal waveform and producing method thereof 失效
标题翻译：具有正弦波形的径向各向异性环形磁体及其制造方法
公开(公告)号：US5399311A
公开(公告)日：1995-03-21
申请号：US975081
申请日：1992-11-12
申请人： Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa
发明人： Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa
IPC分类号： H01F1/053 , H01F7/02 , H01F13/00 , H01F41/02 , H02K1/27 , H02K15/03 , H01F41/16
CPC分类号： H01F41/028 , H01F7/021 , H02K1/2733 , H02K15/03 , Y10S264/58
摘要： A magnet is formed as a ring magnet and magnetized by radial application of a magnetic field while the intensity of the magnetic field is changed periodically along the circumference of the ring magnet to give a circumferentially sinusoidal waveform distribution of magnetic flux density to the ring magnet in the magnetized state of the magnet.
摘要翻译：磁体形成为环形磁铁，并通过磁场的径向施加磁化，同时磁场的强度沿着环形磁体的圆周周期性地改变，从而给予环形磁体的磁通密度的圆周正弦波形分布磁体的磁化状态。

3. 发明授权

US5342574A Method for producing anisotropic rare earth magnet 失效
标题翻译：各向异性稀土磁体的制造方法
公开(公告)号：US5342574A
公开(公告)日：1994-08-30
申请号：US42772
申请日：1993-04-06
申请人： Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa
发明人： Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa
IPC分类号： G06F3/153 , B22F3/02 , B30B11/04 , C22C1/04 , G06T11/20 , G06T11/80 , H01F1/057 , H01F41/02 , B22F5/00
CPC分类号： H01F1/0576 , B22F3/02 , B30B11/04 , C22C1/0441 , H01F41/0273
摘要： A method for producing an anisotropic rare earth magnet is improved by extruding using a compacted material formed in a shape having difference in level between the center part to be in contact with the end face of a punch and the outer peripheral part to be faced with a molding cavity formed between the punch and a cylindrical die of a mold.
摘要翻译：各向异性稀土类磁体的制造方法通过使用形成为与冲头的端面接触的中心部分之间的高度差异的形状的压缩材料和外周部分进行挤压来提高，在冲头和模具的圆柱形模具之间形成的模腔。

4. 发明授权

US4963320A Method and apparatus for producing anisotropic rare earth magnet 失效
标题翻译：制造各向异性稀土磁体的方法和装置
公开(公告)号：US4963320A
公开(公告)日：1990-10-16
申请号：US507438
申请日：1990-04-11
申请人： Makoto Saito , Teruo Watanabe , Shinichiro Yahagi , Yasuaki Kasai , Norio Yoshikawa , Yutaka Yoshida , Toshiya Kinami , Hiyoshi Yamada
发明人： Makoto Saito , Teruo Watanabe , Shinichiro Yahagi , Yasuaki Kasai , Norio Yoshikawa , Yutaka Yoshida , Toshiya Kinami , Hiyoshi Yamada
IPC分类号： B22F3/02 , B22F3/20 , B30B11/02 , H01F1/053 , H01F1/057 , H01F41/02
CPC分类号： B30B11/027 , B22F3/02 , B22F3/20 , H01F1/053 , H01F1/0576 , H01F41/0266
摘要： A method for producing an anisotropic rare earth magnet is improved by applying compressing stress on a free surface of an compacted material at the time of extruding the compacted material in order to prevent forming cracks, and improved by using a double action punch provided with a core punch and a sleeve punch so as to mold a compacted material and extrude the compacted material into the anisotropic magnet material in a single heat process continuously.

5. 发明授权

US5402025A Rotor provided with a ring-shaped magnet 失效
标题翻译：转子配有环形磁铁
公开(公告)号：US5402025A
公开(公告)日：1995-03-28
申请号：US168209
申请日：1993-12-17
申请人： Makoto Saito , Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa
发明人： Makoto Saito , Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa
IPC分类号： H02K1/27 , H02K21/12
CPC分类号： H02K1/2733
摘要： A rotor comprises a rotor body and a ring-shaped rare earth metal-iron type magnet arranged therearound, in which a low thermal-expansion material is inserted between the rotor body and the magnet.
摘要翻译：转子包括转子体和布置在其周围的环形稀土金属 - 铁型磁体，其中低热膨胀材料插入在转子体和磁体之间。

6. 发明授权

US5122319A Method of forming thin-walled elongated cylindrical compact for a magnet 失效
标题翻译：形成用于磁体的薄壁伸长圆柱滚子的方法
公开(公告)号：US5122319A
公开(公告)日：1992-06-16
申请号：US673549
申请日：1991-03-22
申请人： Teruo Watanabe , Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa , Yutaka Yoshida
发明人： Teruo Watanabe , Yasuaki Kasai , Hiyoshi Yamada , Norio Yoshikawa , Yutaka Yoshida
IPC分类号： B22F3/02 , B30B11/02 , H01F1/057 , H01F41/02
CPC分类号： H01F1/0576 , B22F3/02 , B30B11/02 , H01F41/0266 , Y10S264/58
摘要： A method of forming a cylindrical compact for a cylindrical magnet is improved by moving a core pin and a die of a mold at the same time of pressing magnet materials with a pressing punch in the same direction as that of the pressing punch at travelling speed Vc and Vd indicated by following equation:Vc=m.multidot.Vp(0.5.ltoreq.m.ltoreq.1.0)Vd=n.multidot.Vp(0.5.ltoreq.n.ltoreq.1.0)where Vc is the travelling speed of the core pin, Vd is the travelling speed of the die and Vp is the pressing speed of the pressing punch. It is possible to form the thin-walled elongated cylindrical compact by utilizing the frictional force caused between the mold and the magnet materials for forming the compact very effectively in order to obtain a thin walled elongated cylindrical magnet.

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