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公开(公告)号：US20140113139A1
公开(公告)日：2014-04-24
申请号：US14142199
申请日：2013-12-27
Inventor： Yukihiro Isoda , Naoki Shioda
CPC classification number: C01B33/06 , B22F9/04 , B22F9/16 , B22F2999/00 , Y10T428/2982 , Y10T428/2993 , B22F2201/013 , B22F2201/11 , B22F2203/11
Abstract: A method of producing inorganic compound particles is provided. It includes a step of impregnating a melt liquid of second raw particles into first raw particles by heating a raw material including them at a temperature, which equals to or higher than an eutectic temperature between a region-II (solid-liquid phase range) and a region-I (solid phase range) in a phase diagram and lower than the melting temperature of the inorganic compound. The first raw particles contain an element with a melting point equals to or higher than a melting point of the inorganic compound. The second raw particles contain an element with a melting point lower than the inciting point of the inorganic compound. The method also includes a step of synthesizing inorganic compound particles by a synthetic reaction in the first raw particles between the elements contained in the first and second raw particles.
Abstract translation: 提供了制备无机化合物颗粒的方法。 其包括将第二原料颗粒的熔融液浸渍到第一原料颗粒中的步骤，该温度等于或高于区域II（固液相范围）与 相图中的区域I（固相范围），并且低于无机化合物的熔融温度。 第一原料颗粒含有熔点等于或高于无机化合物的熔点的元素。 第二原料颗粒含有熔点低于无机化合物的煽燃点的元素。 该方法还包括通过在第一和第二原料中包含的元素之间的第一原料颗粒中的合成反应合成无机化合物颗粒的步骤。
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公开(公告)号：US12191714B2
公开(公告)日：2025-01-07
申请号：US17283951
申请日：2019-08-22
Applicant: MITSUBA Corporation
Inventor： Ryo Ohori , Naoki Shioda
IPC: H02K1/27 , H02K1/2781 , H02K1/2791 , H02K1/28 , H02K3/48
Abstract: A rotor, motor and brushless motor are provided. This rotor (9) includes a rotor core (32), permanent magnets (33), and a protrusion (35) protruding radially outward between permanent magnets (33). The permanent magnets (33) has a parallel orientation in which the easy magnetization direction is parallel to the radial direction in the center of the permanent magnets (33). The circumferential side faces (33d) of the permanent magnets (33) contact the protrusion (35) in the circumferential direction. Connection surfaces (33e) of the permanent magnets (33) are connected to the circumferential side face (33d) and to the outer peripheral surface (33a) on the radial outer side. The front end (35t) of the protrusion (35) in the protrusion direction is arranged between the center (33g) of the circumferential side face (33d) in the protrusion direction and the crossing ridge portion (33h) where the circumferential side face (33d) and the connection surface (33e) cross.
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Patent Agency Ranking
公开(公告)号：US11374512B2
公开(公告)日：2022-06-28
申请号：US17292456
申请日：2019-10-01
Applicant: MITSUBA Corporation
Inventor： Ryo Ohori , Naoki Shioda
Abstract: A motor includes: a stator having an annular stator core and multiple teeth protruding radially inwards from the stator core; a coil wound around the teeth; a shaft rotating around the rotation axis radially inside of the stator core; a rotor core fixed to the shaft; magnets positioned on the outer peripheral surface of the rotor core; a salient pole positioned between magnets adjacent to each other in the circumferential direction; an applying portion applying a voltage to the coil; and an applying control portion controlling the applying portion. The ratio of the number of magnetic poles of the magnets and the number of teeth is 2:3. The voltage is a rectangular wave, and its application is started when the tip of the salient pole does not face an opening in the teeth.
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公开(公告)号：US11289960B2
公开(公告)日：2022-03-29
申请号：US16632370
申请日：2018-06-26
Applicant: MITSUBA Corporation
Inventor： Ryo Ohori , Naoki Shioda , Gensaku Yamakami
Abstract: A motor and a brushless wiper motor are provided. The motor (2) includes: a stator (8); coils (24); a shaft (31); a rotor core (32); magnets (33) which are disposed on an outer peripheral surface (32b) of the rotor core (32) and a radial thickness of which at end portions (33s) on both sides in the circumferential direction around the rotation axis is smaller than a radial thickness in a circumferential intermediate portion; and salient poles (35) that are formed between magnets (33) adjacent in the circumferential direction of the outer peripheral surface (32b) of the rotor core (32) and protrude radially outward from the end portions (33s) of the magnets (33) in the circumferential direction. The width dimensions of the salient poles (35) in the radial direction being set to 40° or less in a form of an electrical angle.
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公开(公告)号：US12009767B2
公开(公告)日：2024-06-11
申请号：US17442576
申请日：2020-03-26
Applicant: MITSUBA Corporation
Inventor： Ryo Ohori , Naoki Shioda , Masaki Hayata , Takashi Yatsuda , Atsushi Kawasaki
CPC classification number: H02P6/16 , B60J7/0573 , B60S1/08 , H02P2209/07 , H02P2209/11 , H02P2209/13
Abstract: A motor control device for controlling a brushless motor including a rotor and a three-phase armature coil includes: a position detection unit which detects the rotational position of the rotor; a control unit which outputs, in a first control mode or a second control mode, a first drive signal or a second drive signal to an inverter at a current-supply timing based on the rotational position of the rotor; and the inverter which outputs a first current-supply signal or a second current-supply signal to the three-phase armature coil when the first drive signal or the second drive signal is input. For any two of the three phases, a duty value when the duty of the applied voltages is the same is larger in the second control mode than in the first control mode.
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公开(公告)号：US11043886B2
公开(公告)日：2021-06-22
申请号：US16648239
申请日：2018-10-30
Applicant: MITSUBA Corporation
Inventor： Naoki Ogata , Naoki Shioda
IPC: H02K23/38
Abstract: According to the present invention, a coil is continuously wound in a single pass around each of a series of teeth, and connected to each segment.
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公开(公告)号：US09340431B2
公开(公告)日：2016-05-17
申请号：US14142199
申请日：2013-12-27
Inventor： Yukihiro Isoda , Naoki Shioda
CPC classification number: C01B33/06 , B22F9/04 , B22F9/16 , B22F2999/00 , Y10T428/2982 , Y10T428/2993 , B22F2201/013 , B22F2201/11 , B22F2203/11
Abstract: A method of producing inorganic compound particles is provided. It includes a step of impregnating a melt liquid of second raw particles into first raw particles by heating a raw material including them at a temperature, which equals to or higher than an eutectic temperature between a region-II (solid-liquid phase range) and a region-I (solid phase range) in a phase diagram and lower than the melting temperature of the inorganic compound. The first raw particles contain an element with a melting point equals to or higher than a melting point of the inorganic compound. The second raw particles contain an element with a melting point lower than the inciting point of the inorganic compound. The method also includes a step of synthesizing inorganic compound particles by a synthetic reaction in the first raw particles between the elements contained in the first and second raw particles.
Abstract translation: 提供了制备无机化合物颗粒的方法。 其包括将第二原料颗粒的熔融液浸渍到第一原料颗粒中的步骤，该温度等于或高于区域II（固液相范围）与 相图中的区域I（固相范围），并且低于无机化合物的熔融温度。 第一原料颗粒含有熔点等于或高于无机化合物的熔点的元素。 第二原料颗粒含有熔点低于无机化合物的煽燃点的元素。 该方法还包括通过在第一和第二原料中包含的元素之间的第一原料颗粒中的合成反应合成无机化合物颗粒的步骤。
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