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公开(公告)号：US11444508B2
公开(公告)日：2022-09-13
申请号：US16757822
申请日：2018-10-24
Applicant: Komatsu Ltd.
Inventor： Takuya Kanada , Takaaki Kimura , Ryuichi Kuramae , Teiichirou Chiba , Atsuyoshi Koshiba , Akira Minamiura
Abstract: An electric motor includes a rotor, a stator, and an electric motor casing. The electric motor casing forms a first accommodating space accommodating a rotary shaft and a rotor core and a stator, and has an inner peripheral surface including an abutting inner peripheral surface in contact with a top portion on the radially outer side of a core convex portion. An outer peripheral-side flow path through which a cooling medium is capable of flowing is formed between the core convex portions adjacent to each other in the peripheral direction. The outer peripheral-side flow path is defined by an outer peripheral surface of the core main body and the inner peripheral surface of the electric motor casing.
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公开(公告)号：US20140349516A1
公开(公告)日：2014-11-27
申请号：US14369786
申请日：2012-11-14
Applicant: Komatsu Ltd.
Inventor： Hiroyuki Tokunaga , Akira Okabe , Teiichirou Chiba
IPC: H01R13/516
CPC classification number: H01R13/516 , B60L3/0061 , B60L3/04 , B60L2200/40 , B60L2270/40 , H02K5/10 , H02K5/225 , H02K11/20 , H02K11/225 , H02K11/25 , H02K11/35 , H02K15/0006 , Y02T10/641
Abstract: An interlock mechanism of a motor, includes a terminal box configured to store a terminal used to connect a power supply cable to the motor; a lid configured to close the terminal box; a fixing member configured to fix the lid to the terminal box; a first connector attached to the lid; a second connector capable of being coupled with the first connector and configured to cover the fixing member in a state that the second connector is coupled with the first connector.
Abstract translation: 电动机的互锁机构包括：端子盒，被配置为存储用于将电源电缆连接到电动机的端子; 盖子，用于关闭所述接线盒; 固定构件，其构造成将所述盖固定到所述接线盒; 连接到盖的第一连接器; 第二连接器，其能够与所述第一连接器耦合并且被配置为在所述第二连接器与所述第一连接器耦合的状态下覆盖所述固定构件。
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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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Patent Agency Ranking
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：US20200284310A1
公开(公告)日：2020-09-10
申请号：US16758120
申请日：2019-01-22
Applicant: Komatsu Ltd.
Inventor： Akira Minamiura , Masahiko Ishiyama , Naoyuki Iwamoto , Teiichirou Chiba
Abstract: A speed reducer includes a transmission unit rotating around an axis, an annular member having a cylindrical shape surrounding the axis, rotating around the axis together with the transmission unit, and having an oil sump having a recessed groove recessed in an inner peripheral surface and a lubricating oil supply hole extending and opening radially outward from the recessed groove, and a sliding portion provided radially outward of the lubricating oil supply hole of the annular member.
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公开(公告)号：US11799341B2
公开(公告)日：2023-10-24
申请号：US17274335
申请日：2019-08-16
Applicant: Komatsu Ltd.
Inventor： Atsuyoshi Koshiba , Takaaki Kimura , Kousuke Mikami , Teiichirou Chiba
CPC classification number: H02K3/12 , H02K3/28 , H02K3/50 , H02K2213/03
Abstract: A stator includes a stator core including a plurality of teeth and a plurality of slots, a coil wound around the plurality of slots, and a spacer disposed on an end portion in an axial direction of the stator core. The coil includes a plurality of coil segments, each including a bent portion and a pair of legs. The spacer includes a coil support portion that is disposed between an end portion of each of the teeth and the bent portion of the coil segment and that has a support surface. A distance from the end portion of each of the teeth to the support surface on an inner side in a radial direction of the stator core is longer than a distance from the end portion of each of the teeth to the support surface on an outer side in the radial direction of the stator core.
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公开(公告)号：US20210189687A1
公开(公告)日：2021-06-24
申请号：US16761305
申请日：2018-10-23
Applicant: Komatsu Ltd.
Inventor： Akira Minamiura , Masahiko Ishiyama , Naoyuki Iwamoto , Teiichirou Chiba
IPC: E02F9/12 , F16H57/04 , F16H57/021 , F16H57/10
Abstract: A rotary drive system includes an electric motor, a speed reducer, and a lubricating oil-circulating unit. The electric motor has an electric motor casing forming a first accommodating space and a communication hole communicating downward. The speed reducer has a speed reducer casing forming a second accommodating space communicating with the first accommodating space through the communication hole. The lubricating oil-circulating unit has a lubricating oil flow path and a lubricating oil pump. The lubricating oil flow path connects the first accommodating space and the second accommodating space at the outside. The lubricating oil pump pumps lubricating oil from the second accommodating space side to the first accommodating space side.
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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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