公开(公告)号：US20190139579A1

公开(公告)日：2019-05-09

申请号：US16147935

申请日：2018-10-01

Applicant: Nidec Corporation

Inventor： Tomohiro YONEDA ,  Takaharu FUNATSU ,  Akitsugu MIWA ,  Masakazu MATSUYAMA ,  Junzo FUJINAWA ,  Tadahiro KURAMOTO

IPC: G11B33/02

CPC classification number: G11B33/022 ,  G11B23/0326 ,  G11B23/38 ,  G11B25/043

Abstract: A base member is structured to define a portion of a casing in which a gas with a density lower than that of air is to be sealed and to support a motor to be housed in the casing. The base member includes a base body made of a cast material, an information mark, and an insulating coating layer. The information mark includes casting information and is located on a portion of a surface of the base body. The insulating coating layer is defined on the surface of the base body and covers the information mark.

公开(公告)号：US20220250713A1

公开(公告)日：2022-08-11

申请号：US17666569

申请日：2022-02-08

Applicant: NIDEC CORPORATION

Inventor： Tadahiro KURAMOTO ,  Toshiyuki SASAKI ,  Takeshi OHIRO

IPC: B62M6/55 ,  B62M11/06 ,  B62M6/50

Abstract: A drive device includes a motor having a motor shaft, an output part outputting a rotational force to the outside, a gear part transmitting the rotational force of the motor shaft to the output part, and a housing having an internal space in which the motor, a portion of the output part, and the gear part are accommodated. The housing includes a support member of which at least a portion is disposed in the internal space. The gear part includes at least one gear shaft rotatably supported by the housing via two bearing parts disposed away from each other in an axial direction. The at least one gear shaft is rotatably supported by the support member via the bearing part on one side in the axial direction.

公开(公告)号：US20190287573A1

公开(公告)日：2019-09-19

申请号：US16294973

申请日：2019-03-07

Applicant: Nidec Corporation

Inventor： Tomonori TERASAKI ,  Tomohiro YONEDA ,  Junzo FUJINAWA ,  Hirokazu WATANABE ,  Tadahiro KURAMOTO

IPC: G11B33/02 ,  G11B33/12

Abstract: A base unit includes a support to support a motor, a bottom plate, and a wall. The bottom plate extends radially outward from the support. The wall extends upward from an outer periphery of the bottom plate, and includes a rectangular opening in planar view. Surfaces of the bottom plate and the wall include a cover surface covered with an electrodeposition coating film and an exposed surface in which a material of the base unit is exposed from the electrodeposition coating film. At least an upper end surface of the wall and a partial region of an inside wall surface of the wall continuous with the upper end surface are each the exposed surface.

公开(公告)号：US20220250714A1

公开(公告)日：2022-08-11

申请号：US17666572

申请日：2022-02-08

Applicant: NIDEC CORPORATION

Inventor： Tadahiro KURAMOTO ,  Toshiyuki SASAKI ,  Takeshi OHIRO

IPC: B62M6/75

Abstract: A drive device includes a motor, an output part outputting torque to the outside, a gear part transmitting torque of the motor to the output part, and a housing having an internal space. The gear part includes at least one gear shaft extending in an axial direction, to which at least one gear is fixed, and a gear case accommodating the gear. The gear case includes a wall part facing an outer circumferential surface of the accommodated gear in a radial direction and extending in a circumferential direction and an opening adjacent to the wall part in the circumferential direction and penetrating in the radial direction. The opening faces the housing in the radial direction, and in a rotation direction of the gear, the wall part includes a front end disposed on a front side of the opening and adjacent to the opening. The front end contacts the housing.

公开(公告)号：US20160254022A1

公开(公告)日：2016-09-01

申请号：US14934582

申请日：2015-11-06

Applicant: Nidec Corporation

Inventor： Masahiro AKAGI ,  Tomohiro YONEDA ,  Tadahiro KURAMOTO ,  Hiroshi KOBAYASHI ,  Masayuki MAEDA ,  Daisuke MORO

IPC: G11B19/20

CPC classification number: G11B19/2009 ,  G11B19/2036 ,  G11B33/122 ,  G11B33/1446 ,  H02K3/28 ,  H02K3/521

Abstract: A base portion of a motor includes an annular inner bottom plate portion, a recessed portion and groove portions recessed upward from a lower surface of the inner bottom plate portion, and at least one through hole passing through the inner bottom plate portion in an axial direction. The groove portions are arranged to extend from the recessed portion toward land portions of a circuit board arranged on a lower surface of the base portion. A draw-out surface of the recessed portion has a lower opening of each of the at least one through hole defined therein. A wall surface of the recessed portion includes communicating openings each of which is in communication with one end of a separate one of the groove portions. Conducting wires are drawn out from coils arranged above the base portion to the draw-out surface through the at least one through hole, and are passed through the communicating openings and the groove portions to be soldered to the land portions. The recessed portion has a sealant arranged therein. The lower opening of each of the at least one through hole is covered with the sealant. Drawing the conducting wires out of the recessed portion through the groove portions contributes to preventing the sealant arranged in the recessed portion from overflowing toward the land portions.

Abstract translation: 电动机的基部包括环形内底板部分，凹部和从内底板部分的下表面向上凹陷的凹槽部分，以及至少一个贯穿内底板部分的轴向方向的通孔 。 凹槽部分被布置成从设置在基部的下表面上的电路板的凹部朝向陆部延伸。 凹陷部分的拉出表面具有限定在其中的至少一个通孔中的每一个的下开口。 凹部的壁面包括连通开口，每个连通孔与单独的一个槽部的一端连通。 导线从通过至少一个通孔的基部上方的线圈被引出到拉出面，并且通过连通开口和沟槽部分被焊接到陆部。 凹部具有布置在其中的密封剂。 所述至少一个通孔中的每一个的下开口被所述密封剂覆盖。 通过槽部将导线从凹部拉出，有助于防止配置在凹部中的密封剂朝着陆部溢出。