公开(公告)号：US12209639B1

公开(公告)日：2025-01-28

申请号：US18605860

申请日：2024-03-15

Applicant: MITSUBA Corporation

Inventor： Motoaki Kobayashi ,  Teppei Tokizaki ,  Tohru Yumoto ,  Nobuyuki Nagai

IPC: F16H1/34 ,  F16H57/08

Abstract: A fifth ball bearing that rotatably supports a rotating shaft is provided on one side of a pinion gear in an axial direction of the rotating shaft. A sixth ball bearing that rotatably supports the rotating shaft is provided on the other side of the pinion gear in the axial direction of the rotating shaft. A carrier is provided with a bearing fixing portion that supports the fifth ball bearing immovably in the axial direction of the rotating shaft, and a bearing guide portion that supports the sixth ball bearing movably in the axial direction of the rotating shaft. The fifth and sixth ball bearings are provided so as not to be close to each other in the axial direction of the rotating shaft, and a female screw portion has a rattling adjustment member that presses the sixth ball bearing toward the side where the fifth ball bearing is provided.

公开(公告)号：US10734854B2

公开(公告)日：2020-08-04

申请号：US15498700

申请日：2017-04-27

Applicant: MITSUBA CORPORATION ,  HONDA MOTOR CO., LTD.

Inventor： Yosuke Fujii ,  Tohru Yumoto ,  Taichi Yamamoto ,  Susumu Miyazaki

IPC: H02K1/27

Abstract: A rotor includes a rotary shaft having a non-magnetic body, a plurality of rotor cores, and a plurality of permanent magnets disposed between the plurality of rotor cores, wherein a concave section extending in an axial direction is formed in any one of the non-magnetic body and a base end of the rotor core, and a convex section fitted into the concave section is formed at the other, the concave section is formed by a key groove section and a dovetail groove section in communication with each other, the convex section is formed by a key section configured to fit into the key groove section and a dovetail protrusion configured to fit into the dovetail groove section, the key section and the dovetail protrusion being integrally formed with each other, and a gap is formed between the dovetail groove section and the dovetail protrusion in the circumferential direction.

公开(公告)号：US12181023B1

公开(公告)日：2024-12-31

申请号：US18607539

申请日：2024-03-17

Applicant: MITSUBA Corporation

Inventor： Motoaki Kobayashi ,  Teppei Tokizaki ,  Tohru Yumoto ,  Nobuyuki Nagai

IPC: F16H57/08 ,  F16H1/28

Abstract: A planetary gear reduction mechanism is capable of accurately driving an object to be driven. A carrier 60 is provided with first and second support shaft fixing holes 64a and 64b to which a support shaft 52 that rotatably supports a planetary gear 50 is fixed, and a shaft coupling 70 is fixed to the carrier 60 by a fixing pin 73 fixed to the second support shaft fixing hole 64b, which allows the shaft coupling 70 to be accurately fixed to the carrier 60 formed with high processing accuracy. Therefore, a planetary gear reduction mechanism 10 is realized, which is capable of accurately driving a drive mechanism of a robot, which is an object to be driven.