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公开(公告)号：US20230283134A1
公开(公告)日：2023-09-07
申请号：US18018943
申请日：2021-09-22
Applicant: Komatsu Ltd.
Inventor： Hiroki Hijikata , Natsuki Watanabe
IPC: H02K3/28
CPC classification number: H02K3/28
Abstract: A stator includes: a stator core having teeth and slots; and coils including outer coils arranged at a first distance from a center of the stator core and inner coils arranged at a second distance shorter than the first distance, wherein the slots include first slots that the outer coils are arranged and second slots that the inner coils are arranged, a depth of the first slots is deeper than that of the second slots, each of coil sets is formed of each of the inner coil and the outer coil arranged to overlap with a part of the inner coil, phases of the inner and outer coils are different in each of the coil sets, the coil sets include first, second, and third coil sets, and a combination of the phases of the inner and outer coils varies among the first, second and third coil sets.
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公开(公告)号：US20160322888A1
公开(公告)日：2016-11-03
申请号：US15108662
申请日：2015-02-17
Applicant: KOMATSU LTD.
Inventor： Natsuki Watanabe , Teiichirou Chiba , Yukihiko Sugmioto
CPC classification number: H02K29/03 , H02K9/19 , H02K19/103 , H02K19/16 , H02K2201/03 , H02K2213/03
Abstract: A rotary electric machine includes: a ring-shaped stator; a rotor disposed to an inside of the stator in a rotatable manner; a plurality of stator teeth provided to the stator equally spaced with each other in a circumferential direction, the stator teeth projecting toward the rotor and each provided with a coil wound therearound; and a plurality of rotor teeth provided to the rotor equally spaced with each other in a circumferential direction, the rotor teeth projecting toward the stator. The rotor teeth each include a convex teeth body and extending portions extending from both sides of an end of the teeth body in the circumferential direction, and a constricted portion with a circumferential minimum width smaller than a circumferential width of an end of each of the stator teeth is provided to an intermediate portion in a projecting direction of each of the rotor teeth.
Abstract translation: 旋转电机包括：环形定子; 以可旋转方式设置在定子的内部的转子; 设置在定子上的多个定子齿在圆周方向上彼此间隔开，定子齿朝向转子突出，并且每个设置有卷绕在其上的线圈; 以及设置在所述转子上的多个转子齿沿圆周方向彼此间隔开，所述转子齿朝向所述定子突出。 转子齿各自包括凸齿体和沿着圆周方向从齿体的端部的两侧延伸的延伸部分，以及周向最小宽度小于每个定子的端部的周向宽度的收缩部分 在每个转子齿的突出方向上的中间部分设置有齿。
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公开(公告)号：US20230318382A1
公开(公告)日：2023-10-05
申请号：US18021194
申请日：2021-09-17
Applicant: Komatsu Ltd.
Inventor： Hiroki Hijikata , Natsuki Watanabe
CPC classification number: H02K3/28 , H02K3/522 , H02K2203/09
Abstract: A stator capable of controlling an increase in a size of a motor is provided. The stator includes a stator core and coils. The stator core includes mounted teeth on which the coils are mounted and non-mounted teeth on which the coils are not mounted. Each of the coils includes a coil end portion that protrudes in an axial direction from the stator core, and a terminal portion connected to a connecting wire that connects the coils to each other. The terminal portion protrudes in a circumferential direction from the coil end portion in such a manner as to overlap with at least a part of the non-mounted teeth in the axial direction.
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公开(公告)号：US20220294283A1
公开(公告)日：2022-09-15
申请号：US17633692
申请日：2020-08-24
Applicant: Komatsu Ltd.
Inventor： Hiroki Hijikata , Natsuki Watanabe , Teiichirou Chiba
Abstract: A coil includes a first coil piece, and a second coil piece coupled to the first coil piece. Each of the first coil piece and the second coil piece has a center portion arranged in a slot of a stator core, and an end portion protruding in an axial direction from the stator core. In the coil end portion, the end portion of the first coil piece and at least a part of the end portion of the second coil piece are arranged in the axial direction.
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公开(公告)号：US20250050750A1
公开(公告)日：2025-02-13
申请号：US18721919
申请日：2022-12-26
Applicant: Komatsu Ltd.
Inventor： Natsuki Watanabe
Abstract: A haul vehicle includes a dump body, a vehicle body supporting the dump body, a traveling apparatus including driving wheels and supporting the vehicle body, a trolley power receiving apparatus to which power is supplied from a trolley wire, a bidirectional DC/DC converter, a storage battery charged with power supplied from the trolley wire via the bidirectional DC/DC converter, an electric motor that generates driving force for rotating the driving wheels, and a switch mechanism that switches between a first state, in which power is supplied from the trolley wire to the electric motor via the bidirectional DC/DC converter, and a second state, in which power is supplied from the storage battery to the electric motor via the bidirectional DC/DC converter.
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Patent Agency Ranking
公开(公告)号：US20250042265A1
公开(公告)日：2025-02-06
申请号：US18717442
申请日：2022-12-26
Applicant: Komatsu Ltd.
Inventor： Natsuki Watanabe
Abstract: A haul vehicle includes a dump body, a vehicle body supporting the dump body, a traveling apparatus including driving wheels and supporting the vehicle body, a trolley power receiving apparatus to which power is supplied from a trolley wire, a fuel cell that generates power through electrochemical reaction between hydrogen and oxygen, and an electric motor that generates driving force for rotating the driving wheels on a basis of power from at least one of the trolley wire or the fuel cell.
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公开(公告)号：US20220263356A1
公开(公告)日：2022-08-18
申请号：US17626589
申请日：2020-08-20
Applicant: Komatsu Ltd.
Inventor： Hiroki Hijikata , Natsuki Watanabe , Teiichirou Chiba
Abstract: A motor includes a stator core, a coil disposed in slots of the stator core, and a rotor facing the stator core. When the number of poles of the rotor is P, the number of the slots of the stator core is S, and a natural number is N, conditions of P=7×N and S=12×N are satisfied.
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公开(公告)号：US10211688B2
公开(公告)日：2019-02-19
申请号：US14889969
申请日：2014-06-06
Applicant: KOMATSU LTD.
Inventor： Natsuki Watanabe , Teiichirou Chiba , Yasuhiko Matsuki
Abstract: A motor includes: an annular stator attached in a housing; a rotor that is disposed in the stator and is rotatably supported by the housing; and a plurality of permanent magnets embedded in a rotor core of the rotor, in which the rotor core has embedding holes respectively in which the permanent magnets are fitted, and each of the embedding holes is formed with filling holes each continuous in an axial direction of the rotor core at diagonal positions of each of the permanent magnets.
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公开(公告)号：US20160301268A1
公开(公告)日：2016-10-13
申请号：US14889969
申请日：2014-06-06
Applicant: KOMATSU LTD.
Inventor： Natsuki Watanabe , Teiichirou Chiba , Yasuhiko Matsuki
CPC classification number: H02K1/2706 , H02K1/2766 , H02K1/32 , H02K5/20 , H02K9/19 , H02K21/046
Abstract: A motor includes: an annular stator attached in a housing; a rotor that is disposed in the stator and is rotatably supported by the housing; and a plurality of permanent magnets embedded in a rotor core of the rotor, in which the rotor core has embedding holes respectively in which the permanent magnets are fitted, and each of the embedding holes is formed with filling holes each continuous in an axial direction of the rotor core at diagonal positions of each of the permanent magnets.
Abstract translation: 马达包括：附接在壳体中的环形定子; 转子，其设置在所述定子中并且由所述壳体可旋转地支撑; 以及嵌入在转子的转子铁心中的多个永久磁铁，其中转子铁芯具有分别安装有永磁体的嵌入孔，并且每个嵌入孔形成有沿轴向连续的填充孔 转子芯在每个永磁体的对角位置。
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公开(公告)号：US20240326682A1
公开(公告)日：2024-10-03
申请号：US18293805
申请日：2022-09-27
Applicant: Komatsu Ltd.
Inventor： Natsuki Watanabe , Yuta Hoshino
Abstract: A sprinkling system at a work site includes: a power device that is mounted on a haul vehicle and generates power for driving a traveling device of the haul vehicle by causing hydrogen to react with oxygen; a storage unit that stores a sprinkling position of the work site; a sprinkling device that is mounted on the haul vehicle and sprays water generated in the power device; and a sprinkling control unit that outputs a control command in such a manner that the sprinkling device sprinkles water to the sprinkling position.
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