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1. 发明授权

US10581288B2 Rotor and rotary electrical machine 有权
公开(公告)号：US10581288B2
公开(公告)日：2020-03-03
申请号：US16009252
申请日：2018-06-15
申请人： FANUC CORPORATION
发明人： Shinobu Takano , Takafumi Kajiya , Kenji Kawai
IPC分类号： H02K1/27 , H02K1/28 , H02K1/30 , H02K1/20 , H02K5/20
摘要： A rotor includes: a rotary member; permanent magnets in a plurality of columns which are arranged along the circumferential direction of the rotary member and each of which is divided into a plurality of permanent magnets in a rotary axis direction X of the rotary member; and a sheath tube which is fitted to the outer circumferential side of the permanent magnets, which covers the permanent magnets and which is formed of a fiber-reinforced plastic, and the sheath tube is divided, in the rotary axis direction X of the rotary member, by a division number which exceeds the division number of the permanent magnets.

2. 发明授权

US10424978B2 Rotating electrical machine comprising stator core, and machine tool comprising the same 有权
公开(公告)号：US10424978B2
公开(公告)日：2019-09-24
申请号：US15491482
申请日：2017-04-19
申请人： FANUC CORPORATION
发明人： Youhei Arimatsu , Kenji Kawai
IPC分类号： H02K1/06 , H02K7/09
摘要： To provide a rotating electrical machine which can be easily configured at low lost, and which can highly accurately maintain an axial position (position in a thrust direction) of a rotating shaft in a prearranged position, and a machine tool, to which the rotating electrical machine is applied. A rotating electrical machine includes: a stator including a stator core; and a rotor supported on a rotating shaft supported by way of a non-contact bearing. When a section, in which a torque generation member exists in an axial direction of the rotating electrical machine, is defined as a torque generation section, a first end and a second end of the stator core in the axial direction extend outwards in the axial direction from a first end and a second end of the torque generation section at the rotor side in the axial direction. According to one aspect of the present invention, a length of the first end and the second end of the stator core extending outwards in the axial direction, from the first end and the second end of the torque generation section at the rotor side in the axial direction, is longer than a magnetic gap length of the rotating electrical machine.

3. 发明授权

US09531226B2 Rotor of internal permanent magnet synchronous motor and internal permanent magnet sycnronous motor 有权
标题翻译：内部永磁同步电动机转子和内部永磁同步电动机
公开(公告)号：US09531226B2
公开(公告)日：2016-12-27
申请号：US14108777
申请日：2013-12-17
申请人： FANUC CORPORATION
发明人： Yohei Arimatsu , Kenji Kawai
IPC分类号： H02K1/27
CPC分类号： H02K1/276 , H02K1/2766
摘要： A rotor of an internal permanent magnet synchronous motor including a rotor core, a plurality of slots formed in the rotor core, and a plurality of permanent magnets housed in the plurality of slots. Each of the slots includes a holding part formed between a first outside diameter surface and a first inside diameter surface to hold each of the permanent magnets, and an opening part formed at both sides of the holding part and formed by a second outside diameter surface, a second inside diameter surface and a connecting surface connecting them. The second outside diameter surface is formed to a curved shape so that a distance to an outer circumferential surface of the rotor core in the diametrical direction gradually becomes smaller from both ends of the second outside diameter surface to an intermediate part in the circumferential direction.
摘要翻译：一种内置永磁同步电动机的转子，其包括转子铁芯，形成在转子铁心中的多个槽，以及容纳在多个槽中的多个永久磁铁。每个槽包括形成在第一外径表面和第一内径表面之间以保持每个永磁体的保持部分，以及形成在保持部分的两侧并由第二外径表面形成的开口部分，第二内径表面和连接它们的连接表面。第二外径面形成为弯曲形状，使得与直径方向的转子铁心的外周面的距离从第二外径面的两端向周向的中间部逐渐变小。

4. 发明授权

US11381128B2 Stator with exterior members over molded coils 有权
公开(公告)号：US11381128B2
公开(公告)日：2022-07-05
申请号：US16874080
申请日：2020-05-14
申请人： FANUC CORPORATION
发明人： Kenji Kawai , Tatsuya Ooi
IPC分类号： H02K3/38 , H02K3/40
摘要： A stator includes first exterior members that surround sides of outer circumferential portions of coil ends on both end sides of an iron core, second exterior members connected to the first exterior members, and which surround sides of end portions of the coil ends in the axial direction, and mold members that cover the coil ends and are placed in contact with the first exterior members and the second exterior members. Holes are formed in the second exterior member on one end side, and a surface that faces the mold member, of the second exterior member on the one end side, is inclined in a manner so that a thickness thereof becomes continuously thinner toward the holes.

5. 发明申请

US20200328699A1 PROTECTION DEVICE 审中-公开
公开(公告)号：US20200328699A1
公开(公告)日：2020-10-15
申请号：US16841310
申请日：2020-04-06
申请人： Fanuc Corporation
发明人： Yudai Konaka , Kenji Kawai
IPC分类号： H02P3/22
摘要： A protection device provided between a synchronous motor having a plurality of windings and a motor driving device for driving the synchronous motor includes: a switching unit for making and breaking the connection between the motor driving device and the synchronous motor; a dynamic brake circuit including resistors and switches, to short-circuit the plurality of windings between the switching unit and the synchronous motor via the resistors; and a control device for controlling the switching unit and the dynamic brake circuit. The control device controls the switches in the dynamic brake circuit to short-circuit the plurality of windings, and then controls the switching unit to cut off the connection between the motor driving device and the synchronous motor.

6. 发明申请

US20200185989A1 ROTOR OF SYNCHRONOUS MOTOR WITH REINFORCEMENT MEMBER FOR PRESSING MAGNET 审中-公开
公开(公告)号：US20200185989A1
公开(公告)日：2020-06-11
申请号：US16703215
申请日：2019-12-04
申请人： Fanuc Corporation
发明人： Katsuhiro Saigusa , Takafumi Kajiya , Kenji Kawai
IPC分类号： H02K1/27 , H02K1/28
摘要： A rotor of a synchronous motor is provided with a plurality of magnets fixed to an outer circumferential surface of a rotor core, and a reinforcement member having a cylindrical shape. An interposition member is disposed between the magnet and the reinforcement member. The magnet includes an outer circumferential surface whose center portion in the circumferential direction bulges outward. The interposition member is formed so as to cover the entire outer circumferential surface of the magnet. An outer circumferential surface of the interposition member has a circular shape when cutting along a plane perpendicular to a rotation axis, and is in close contact with an inner circumferential surface of the reinforcement member.

7. 发明授权

US09812914B2 Rotor component member, rotating axis, rotor, motor, and machine tool 有权
公开(公告)号：US09812914B2
公开(公告)日：2017-11-07
申请号：US14939377
申请日：2015-11-12
申请人： FANUC CORPORATION
发明人： Kenji Kawai , Shinobu Takano , Yohei Arimatsu
IPC分类号： H02K1/27 , H02K1/30 , H02K15/03
CPC分类号： H02K1/30 , H02K1/278 , H02K15/03
摘要： A rotor according to the present invention includes a rotating axis rotating about an axial center of the rotating axis and a rotor component member including an inner circumferential surface on which an outer circumferential surface of the rotating axis fits. The outer circumferential surface of the rotating axis and the inner circumferential surface of the rotor component member include corresponding tapered surfaces each having a diameter that varies in taper along the axial center, the tapered surfaces being in full contact with each other while the outer circumferential surface of the rotating axis is press-fitted relative to the inner circumferential surface of the rotor component member, and at least one of the tapered surfaces has a corrugated surface structure storing a lubricant before the rotating axis is press-fitted relative to the rotor component member, while configured to wear away by press-fitting the rotating axis relative to the rotor component member to discharge the lubricant.

8. 发明申请

US20160141931A1 ROTOR COMPONENT MEMBER, ROTATING AXIS, ROTOR, MOTOR, AND MACHINE TOOL 有权
标题翻译：转子组件，旋转轴，转子，电机和机床
公开(公告)号：US20160141931A1
公开(公告)日：2016-05-19
申请号：US14939377
申请日：2015-11-12
申请人： FANUC CORPORATION
发明人： Kenji Kawai , Shinobu Takano , Yohei Arimatsu
IPC分类号： H02K1/30 , H02K1/27
CPC分类号： H02K1/30 , H02K1/278 , H02K15/03
摘要： A rotor according to the present invention includes a rotating axis rotating about an axial center of the rotating axis and a rotor component member including an inner circumferential surface on which an outer circumferential surface of the rotating axis fits. The outer circumferential surface of the rotating axis and the inner circumferential surface of the rotor component member include corresponding tapered surfaces each having a diameter that varies in taper along the axial center, the tapered surfaces being in full contact with each other while the outer circumferential surface of the rotating axis is press-fitted relative to the inner circumferential surface of the rotor component member, and at least one of the tapered surfaces has a corrugated surface structure storing a lubricant before the rotating axis is press-fitted relative to the rotor component member, while configured to wear away by press-fitting the rotating axis relative to the rotor component member to discharge the lubricant.
摘要翻译：根据本发明的转子包括围绕旋转轴线的轴心旋转的旋转轴和包括旋转轴的外周面配合的内周面的转子部件。旋转轴的外周面和转子构件的内周面具有相应的锥形面，其各自具有沿轴心的锥形变化的直径，锥形面彼此完全接触，而外周面所述旋转轴线相对于所述转子部件的内周面被压入，并且所述锥面的至少一个在所述旋转轴相对于所述转子部件的压配合之前具有保存润滑剂的波纹状表面结构体同时通过相对于转子部件压配合旋转轴而使其磨损而排出润滑剂。

9. 发明授权

US11233430B2 Rotor of synchronous motor with reinforcement member for pressing magnet 有权
公开(公告)号：US11233430B2
公开(公告)日：2022-01-25
申请号：US16703215
申请日：2019-12-04
申请人： Fanuc Corporation
发明人： Katsuhiro Saigusa , Takafumi Kajiya , Kenji Kawai
IPC分类号： H02K1/27 , H02K1/28 , H02K29/03
摘要： A rotor of a synchronous motor is provided with a plurality of magnets fixed to an outer circumferential surface of a rotor core, and a reinforcement member having a cylindrical shape. An interposition member is disposed between the magnet and the reinforcement member. The magnet includes an outer circumferential surface whose center portion in the circumferential direction bulges outward. The interposition member is formed so as to cover the entire outer circumferential surface of the magnet. An outer circumferential surface of the interposition member has a circular shape when cutting along a plane perpendicular to a rotation axis, and is in close contact with an inner circumferential surface of the reinforcement member.

10. 发明授权

US10128727B2 Rotor member, rotor, electric motor, machine tool, and manufacturing method of rotor 有权
公开(公告)号：US10128727B2
公开(公告)日：2018-11-13
申请号：US14935665
申请日：2015-11-09
申请人： FANUC CORPORATION
发明人： Yohei Arimatsu , Kenji Kawai
IPC分类号： H02K1/27 , H02K15/03 , H02K1/30
摘要： A rotor member includes a cylindrical sleeve part having a circular outer peripheral surface, a plurality of magnets arranged along the outer peripheral surface and including an inner peripheral surface having a curvature radius larger than a curvature radius of the outer peripheral surface, and a cylindrical holding member surrounding the plurality of magnets. Between the outer peripheral surface of the sleeve part and the inner peripheral surface of the magnets, a gap of a radial direction increased toward a circumferential edge portion of the magnets is formed.

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