公开(公告)号：US20240195236A1

公开(公告)日：2024-06-13

申请号：US18079202

申请日：2022-12-12

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin-Feng CHANG ,  Chih-Meng CHU ,  Zhi-Zheng WU ,  Chen-Hui CHANG

IPC: H02K1/16 ,  H02K3/12 ,  H02K3/28

CPC classification number: H02K1/165 ,  H02K3/12 ,  H02K3/28

Abstract: A motor stator has an annular stator core, and a plurality of tooth portions spaced on the inner surface of the annular stator core which has a slot formed on each of two sides of each of the tooth portions. Each of the tooth portions has a coil wound and a portion of the coil is located in the two slots of each of the tooth portions. Each of the coils is formed by a metal wire coiled around a bobbin several times from the inner side to the outer side. The bobbin has an inner guide frame and an outer guide frame, both of them have a structure with a bottom plate and a side plate that are arranged vertically so that the coil can be attached to the bobbin to miniaturize the motor stator.

公开(公告)号：USD936106S1

公开(公告)日：2021-11-16

申请号：US29767723

申请日：2021-01-25

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Designer： Chin Feng Chang

公开(公告)号：US20190334414A1

公开(公告)日：2019-10-31

申请号：US16504014

申请日：2019-07-05

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin Feng CHANG

IPC: H02K11/01 ,  C22C38/02 ,  C21D8/12 ,  H02K1/27 ,  H02K1/04 ,  H02K15/03 ,  H02K15/12 ,  H02K15/02

Abstract: A motor core has multiple silicon steel sheets and multiple layers of electrically insulating colloid. Each one of the multiple layers of electrically insulating colloid is disposed between adjacent two of the silicon steel sheets. This reduces the chance of forming eddy currents, reducing the eddy current loss of the motor core during operation.

公开(公告)号：US20180358868A1

公开(公告)日：2018-12-13

申请号：US15622002

申请日：2017-06-13

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin Feng Chang

IPC: H02K11/01 ,  H02K15/03 ,  H02K1/27 ,  C21D8/12 ,  C22C38/02

Abstract: A manufacturing method for a motor core includes a preparing step, a coating step, a stacking step, and a forming step. In the preparing step, the silicon steel sheets are cleaned and dried. In the coating step, an electrically insulating colloid is coated between each pair of adjacent silicon steel sheets. In the stacking step, the silicon steel sheets on which the electrically insulating colloid is applied are stacked on each other to form a layered structure. In the forming step, the stacked silicon steel sheets are subjected to a colloid curing process so that the electrically insulating colloid forms a thermosetting plastic. This reduces the chance of forming eddy currents, reducing the eddy current loss of the motor core during operation.

公开(公告)号：USD930586S1

公开(公告)日：2021-09-14

申请号：US29767759

申请日：2021-01-25

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Designer： Chin Feng Chang

公开(公告)号：US10816083B2

公开(公告)日：2020-10-27

申请号：US16059734

申请日：2018-08-09

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin Feng Chang ,  Hung Chun Ke

IPC: F16H57/04 ,  B62M6/75 ,  B62M6/65 ,  F16H57/02 ,  F16H57/08 ,  B62M6/80

Abstract: A lubrication system of a power assembly of an electric scooter includes a case duct and a bearing seat duct formed in a case of the power assembly, and a driven gear shaft duct formed in a driven gear shaft of a driven gear. Lubricant flows to the case duct, the driven gear shaft duct, a driven gear bearing seat in the case, the bearing seat duct, a driving bearing seat in the case in sequence. The lubrication system has a short flowing distance of the lubricant to enhance the effects of lubrication and reducing temperature.

公开(公告)号：US10601286B2

公开(公告)日：2020-03-24

申请号：US15622002

申请日：2017-06-13

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin Feng Chang

IPC: H02K15/00 ,  H02K11/01 ,  H02K15/03 ,  H02K1/27 ,  C21D8/12 ,  C22C38/02 ,  H02K15/02 ,  H02K15/12 ,  H02K1/04 ,  C09D183/08

Abstract: A manufacturing method for a motor core includes a preparing step, a coating step, a stacking step, and a forming step. In the preparing step, the silicon steel sheets are cleaned and dried. In the coating step, an electrically insulating colloid is coated between each pair of adjacent silicon steel sheets. In the stacking step, the silicon steel sheets on which the electrically insulating colloid is applied are stacked on each other to form a layered structure. In the forming step, the stacked silicon steel sheets are subjected to a colloid curing process so that the electrically insulating colloid forms a thermosetting plastic. This reduces the chance of forming eddy currents, reducing the eddy current loss of the motor core during operation.

公开(公告)号：US10597115B2

公开(公告)日：2020-03-24

申请号：US16059736

申请日：2018-08-09

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin Feng Chang ,  Hung Chun Ke

IPC: H02K5/10 ,  B62M6/45

Abstract: A controlling system of an electric scooter includes a case having a mounting room therein; and a circuit board received in the mounting room of the case, and having a recess portion at an edge thereof. A driving shaft of an electric motor has at least a section in the mounting room of the case and received in the recess portion of the circuit board. It may reduce a size of the case.

公开(公告)号：US20240204583A1

公开(公告)日：2024-06-20

申请号：US18082088

申请日：2022-12-15

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： Chin Feng CHANG ,  Chih Meng CHU ,  Zhi Zheng WU ,  Chen Hui CHANG

IPC: H02K1/16 ,  H02K3/12 ,  H02K3/30

CPC classification number: H02K1/16 ,  H02K3/12 ,  H02K3/30

Abstract: A motor coil, which is a metal coil formed by a metal wire, the thickness of the metal wire is gradually decreased from the first end portion of the metal wire to the second end portion of the metal wire and any cross-sectional area of the metal wire is equal. The metal coil is a plural laminated layer of the metal wires forming a spiral shape along a surrounding direction. A motor stator comprises a stator core set having a plurality of teeth and the metal coil being sleeved on the outer surface of each stator core set, so that the first and the second end portion will face toward a motor core portion and outer portion respectively. The metal wire has a polymer layer on the outer surface, and an insulative coating is provided between the polymer layer and the metal wire.

公开(公告)号：US20200047848A1

公开(公告)日：2020-02-13

申请号：US16059732

申请日：2018-08-09

Applicant: FUKUTA ELECTRIC & MACHINERY CO., LTD.

Inventor： CHIN FENG CHANG ,  HUNG CHUN KE

IPC: B62M6/75 ,  B62K11/00 ,  B62M6/65

Abstract: A power assembly of an electric scooter includes a case, in which an electric motor, a driven gear, and a controller are received. The case has a base, and the base is provided with a separating layer to divide a space in the base into a first space and a second space. The electric motor has an output shaft and a driving gear connected to the output shaft. The driving gear is received in the first space of the base. The driven gear is received in the first space of the base and mesh with the driving gear. A gear shaft is connected to the driven gear, and the gear shaft has an end extending out of the case. The controller is provided in the second space of the base and electrically connected to the electric motor.