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    Drive controller and motor drive system
    4.
    发明授权
    Drive controller and motor drive system 有权

    公开(公告)号：US09780707B2

    公开(公告)日：2017-10-03

    申请号：US14918770

    申请日：2015-10-21

    Applicant: DENSO CORPORATION

    Inventor： Yuuji Hidaka ,  Kiyoshi Nagata ,  Masaya Ootake ,  Hirokazu Toyoda ,  Manabu Nomura

    IPC: H02H7/09 ,  H02P1/04 ,  H02P6/20 ,  H02P6/18

    CPC classification number: H02P6/20 ,  H02P1/04 ,  H02P6/18

    Abstract: A drive controller that controls a drive of a motor. The drive controller performs a collision force moderation control during a motor start time, during which a collision force in a collision between a shaft outwall with an impeller hole inwall for a positioning is moderated, by changing a power supply at a stage transition time of transiting from a position detection to a position determination. The maximum value of a first output value during a position detection time is set to be greater than a first threshold that at least causes a rotation number of the motor to yield a detectable induction voltage. A second output value during a position determination time is set to be lower than a second threshold that causes a wear or a breakage of an impeller by the collision force.

    Liquid pump
    5.
    发明授权
    Liquid pump 有权

    公开(公告)号：US10148150B2

    公开(公告)日：2018-12-04

    申请号：US14912529

    申请日：2014-09-03

    Applicant: DENSO CORPORATION

    Inventor： Kiyoshi Nagata ,  Tetsuo Hayakawa ,  Masaya Ootake

    IPC: F04D13/06 ,  H02K5/22 ,  F04D3/00 ,  F04D29/18 ,  F04D29/52 ,  F02M37/08 ,  F04D5/00 ,  F02M37/10

    Abstract: A cover end of a fuel pump is formed by resin molding and has a tubular portion, which holds a bearing that is placed along a central axis of the tubular portion and rotatably supports one end portion of a shaft of a motor arrangement. Furthermore, three terminals, which supply three-phase electric power received from an outside to windings on a phase-by-phase basis, are insert molded in the cover end. In the cover end, a first transverse passage, which is formed between the first terminal and the second terminal in a circumferential direction, and a second transverse passage, which is formed between the second terminal and the third terminal in the circumferential direction, are configured into a form of V-shape, which diverges in a radially outer direction, in a view taken in an axial direction.

    Fuel pump
    7.
    发明授权
    Fuel pump 有权

    公开(公告)号：US10408219B2

    公开(公告)日：2019-09-10

    申请号：US15022336

    申请日：2014-09-15

    Applicant: DENSO CORPORATION

    Inventor： Hiromi Sakai ,  Kiyoshi Nagata ,  Masaya Ootake

    IPC: F04D13/00 ,  F04D29/046 ,  F04D5/00 ,  F04D29/66 ,  F02M37/04 ,  F04D3/00 ,  F04D13/06 ,  F04D29/52 ,  F04D29/047 ,  F02M59/44

    Abstract: A fuel pump includes a pump cover at one end portion of the housing, a cover end at the other end portion of the housing, a bearing supported by the cover end and rotatably supporting an end portion of the shaft on the cover end-side. The cover end includes a base part that covers the other end portion, a discharge part that is connected to the base part, a bearing accommodating part which is formed such that a cross-section of the bearing accommodating part perpendicular to a rotation axis of the shaft has an annular shape and which includes an accommodating space accommodating the bearing, and a connection part that connects together the base part and the bearing accommodating part. A length of the connection part is shorter than a length of the base part and a length of the bearing accommodating part, in a direction of the rotation axis.

    Fuel pump
    8.
    发明授权
    Fuel pump 有权

    公开(公告)号：US10233881B2

    公开(公告)日：2019-03-19

    申请号：US15571974

    申请日：2016-05-19

    Applicant: DENSO CORPORATION

    Inventor： Yuuji Hidaka ,  Masaya Ootake

    IPC: F02M37/00 ,  F02M37/08 ,  F02M37/10 ,  F04D5/00 ,  F04D13/06 ,  F04D29/18 ,  F04D29/20 ,  F02M37/04

    Abstract: An outer wall surface of an output end portion includes a pair of first plane surfaces which are formed at different positions in its circumferential direction. An inner wall surface of a fitting hole includes a pair of second plane surfaces which are formed at different positions in the circumferential direction. A clearance between one of the pair of first plane surfaces and one of the pair of second plane surfaces is made larger from one side toward the other side in an axial direction in a state that a rotary shaft and an impeller are concentric with each other.

    Brushless motor with crossing wire holder
    10.
    发明授权
    Brushless motor with crossing wire holder 有权
    无刷电机带交叉线夹

    公开(公告)号：US09178397B2

    公开(公告)日：2015-11-03

    申请号：US13689994

    申请日：2012-11-30

    Applicant: DENSO CORPORATION

    Inventor： Daiji Furuhashi ,  Kiyoshi Nagata ,  Masaya Ootake

    IPC: H02K3/38 ,  H02K3/52 ,  H02K5/12

    CPC classification number: H02K3/38 ,  H02K3/522 ,  H02K5/12 ,  H02K2203/06

    Abstract: A motor part of a fuel pump is a brushless motor having a stator and a rotor. The stator has a core, a coil set and an insulator, which holds the core and the coil set in an insulated manner. The coil set has a plurality of coils wound about a tooth part and a plurality of crossing wires connecting the coils. The insulator is formed by stacking central ring parts of a plurality of stator units in an axial direction. At least one of crossing wire holder parts is formed of a combination of guide projections, which are formed on the different central ring parts. The length of the brushless motor in the axial direction can thus be shortened.

    Abstract translation: 燃料泵的电动机部件是具有定子和转子的无刷电动机。 定子具有芯，线圈组和绝缘体，其以绝缘方式保持芯和线圈组。 线圈组具有围绕齿部缠绕的多个线圈和连接线圈的多条交叉线。 绝缘体通过在轴向上堆叠多个定子单元的中心环部而形成。 交叉线保持器部分中的至少一个由形成在不同的中心环部分上的引导突起的组合形成。 因此可以缩短无刷电动机在轴向上的长度。

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