公开(公告)号：US20220136587A1

公开(公告)日：2022-05-05

申请号：US17389115

申请日：2021-07-29

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  Hung-Wei Lin

IPC: F16H1/32 ,  F16H57/08

Abstract: A cycloid speed reducer includes an input shaft, a rolling assembly, a first cycloid disc, a second cycloid disc, a first crankshaft, a second crankshaft, a first output disc and a second output disc. The first cycloid disc and the second cycloid disc are disposed around the input shaft and rotated with the input shaft. The first cycloid disc and the second cycloid disc are located at two opposite sides of the rolling assembly, respectively. The first crankshaft includes a first concentric end and a first eccentric end. The first eccentric end is linked with the first cycloid disc. The second crankshaft includes a second concentric end and a second eccentric end. The second eccentric end is linked with the second cycloid disc. The first output disc is linked with the first concentric end. The second output disc is linked with the second concentric end.

公开(公告)号：US12151781B2

公开(公告)日：2024-11-26

申请号：US17880640

申请日：2022-08-03

Applicant: Delta Electronics, Inc.

Inventor： Hung-Wei Lin ,  Yu-Xian Huang ,  Li-Chi Wu ,  Chi-Wen Chung

IPC: B62M6/50 ,  H02K5/04 ,  H02K7/08 ,  H02K7/116 ,  H02K11/24

Abstract: A power module of an electric assisted bicycle is disclosed and includes a pedal shaft, a gear-plate-output shaft, a reducer, a motor, a first sensor, a housing, a second sensor and a driving controller. The gear-plate-output, a reducer-output shaft and a reducer-fixed shaft of the reducer are disposed in parallel and sleeved on the pedal shaft concentrically. The motor drives the gear-plate-output shaft to rotate. The first sensor is disposed on the reducer-fixed shaft for sensing a first torque of the reducer-output shaft acting on the reducer-fixed shaft. The reducer-fixed shaft is connected to the housing. A frameset-fastening component protrudes outwardly from the housing, and is configured to fix the power module on the frameset. The second sensor is disposed on the frameset-fastening component for sensing a second torque of the power module acting on the frameset. The driving controller controls the motor in accordance with the second torque and the first torque.

公开(公告)号：US20230099907A1

公开(公告)日：2023-03-30

申请号：US17740096

申请日：2022-05-09

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  Hung-Wei Lin ,  Chien-Ping Huang

IPC: B62M6/45 ,  B62M6/60 ,  B62M6/55 ,  B60L50/52

Abstract: A power module of an electric assisted bicycle is disclosed and includes a pedal shaft, a gear-plate-output shaft, a reducer-output shaft and a motor-output shaft. The pedal shaft is arranged along an axial direction. The gear-plate-output shaft includes a first section and a second section arranged in the axial direction. The first section is concentrically sleeved on the pedal shaft through a first one-way bearing along a radial direction. When the pedal shaft is forced to rotate, the gear-plate-output shaft is driven through the first one-way bearing. The reducer-output shaft is concentrically sleeved on an outer surface of the second section through a second one-way bearing along the radial direction. The motor-output shaft is concentrically sleeved on the reducer-output shaft along the radial direction. When the motor-output shaft drives the reducer-output shaft to rotate, the gear-plate-output shaft is driven by the reducer-output shaft through the second one-way bearing.

公开(公告)号：US11168763B2

公开(公告)日：2021-11-09

申请号：US16728505

申请日：2019-12-27

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  En-Yi Chu ,  Hung-Wei Lin ,  Ming-Li Tsao ,  Ching-Hsiung Tsai

IPC: F16H1/32 ,  F16H55/34 ,  F16H57/022

Abstract: A two-stage cycloid speed reducer comprises two rotating disc assemblies. Each rotating disc assembly comprises two cycloid discs. In other words, the cycloid speed reducer has four cycloid discs to be in contact with the corresponding rollers. Consequently, the load withstood by each cycloid disc is reduced. Since the cycloid speed reducer has stronger structural strength, the cycloid speed reducer can be applied to the high-load circumstance. Moreover, an eccentric assembly of the eccentric device includes a plurality of eccentric cylinders. The eccentric cylinders are disposed within the axle holes of the corresponding cycloid discs. Due to the eccentric cylinders, the eccentric direction of two cycloid discs is opposite to the eccentric direction of the other two cycloid discs. Consequently, it is not necessary to install an additional weight compensation device in the cycloid speed reducer to compensate the dynamic equilibrium. Moreover, the cycloid speed reducer can be assembled easily.

公开(公告)号：US12188546B2

公开(公告)日：2025-01-07

申请号：US18093168

申请日：2023-01-04

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  En-Yi Chu ,  Hung-Wei Lin ,  Ming-Li Tsao

IPC: F16H1/32 ,  F16H21/18 ,  F16H49/00 ,  H02K7/075 ,  H02K7/116 ,  H02K15/16 ,  F16H57/02

Abstract: A speed reducer comprises a transmission shaft, an eccentric wheel, a first wheel assembly, a rotating wheel and a second wheel assembly. The first wheel assembly comprises a first wheel disc and at least one first roller. The at least one first roller is disposed on the inner wall of first wheel disc. The rotating wheel comprises a main body comprising an outer ring structure and a concave structure. The outer ring structure comprises at least one first tooth. The at least one first tooth is in contact with the corresponding first roller. At least one second roller is disposed within the concave structure. The second wheel assembly comprises a second wheel disc and at least one second tooth. The at least one second tooth is disposed on an outer periphery of the second wheel assembly. The at least one second tooth is in contact with the corresponding second roller.

公开(公告)号：US11336147B2

公开(公告)日：2022-05-17

申请号：US16585368

申请日：2019-09-27

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  En-Yi Chu ,  Hung-Wei Lin ,  Ming-Li Tsao

IPC: H02K7/075 ,  H02K7/116 ,  F16H21/18 ,  H02K15/16 ,  F16H57/02

Abstract: A speed reducing device includes a motor and a speed reducing mechanism. The speed reducing mechanism includes at least one roller assembly, a cycloid disc, at least one fixing disc and a positioning assembly. The roller assembly is disposed within a rotor portion of the motor. While the roller assembly is rotated with the rotor portion, the roller assembly is eccentrically revolved. The roller assembly includes a wheel disc and at least one roller. The cycloid disc includes a main body and at least one cycloid tooth structure. The cycloid tooth structure is protruded from an outer periphery of the main body and in contact with the corresponding roller. While the roller assembly is eccentrically revolved, the at least one cycloid tooth structure is pushed against the corresponding roller, so that the cycloid disc is correspondingly rotated.

公开(公告)号：US11255380B2

公开(公告)日：2022-02-22

申请号：US16787856

申请日：2020-02-11

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  En-Yi Chu ,  Ming-Li Tsao ,  Hung-Wei Lin ,  Jen-Yuan Chen ,  Hsien-Lung Tsai

IPC: F16C33/12 ,  F16C19/38 ,  F16C25/06 ,  F16C35/06 ,  F16C35/063

Abstract: A bearing assembly and a rotary shaft apparatus employing the same are provided. The bearing assembly is rotatably coupled with a first shaft and a second shaft. The first bearing housing includes a first annular recess having a first axial depth. The first bearing is connected with the first annular recess and the first shaft and has a first axial thickness. The second bearing housing includes a second annular recess having a second axial depth. The second bearing is connected with the first annular recess, the second annular recess and the second shaft and has a second axial thickness. The spacer is disposed between the first bearing and the second bearing and has a third axial thickness. The sum of the first axial thickness, the second axial thickness and the third axial thickness is greater than the sum of the first axial depth and the second axial depth.

公开(公告)号：US20230412045A1

公开(公告)日：2023-12-21

申请号：US18136752

申请日：2023-04-19

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  Hung-Wei Lin ,  Fu-Kuang Yang ,  Shu-Hsiang Yang ,  Tzu-Min Yi

IPC: H02K7/102

CPC classification number: H02K7/102

Abstract: A speed-reducer-and-motor all-on-one machine is disclosed and includes a connection shaft, a motor and a speed reducer. The connection shaft includes a first section, a second section and an accommodation space. The first section and the second section are arranged in an axial direction. The accommodation space is in communication between a front end and a rear end of the connection shaft. An elliptical cam is formed on an outer surface of the second section of the connection shaft. An outer diameter of the first section is greater than a major axis length of the elliptical cam. The motor is received within the accommodation space and connected to an inner surface of the first section. The speed reducer is connected to the outer surface of the second section.

公开(公告)号：US20230141065A1

公开(公告)日：2023-05-11

申请号：US18093168

申请日：2023-01-04

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  En-Yi Chu ,  Hung-Wei Lin ,  Ming-Li Tsao

IPC: F16H49/00 ,  H02K7/116 ,  H02K15/16 ,  H02K7/075 ,  F16H21/18

CPC classification number: F16H49/001 ,  H02K7/116 ,  H02K15/165 ,  H02K7/075 ,  F16H21/18 ,  F16H2049/003 ,  F16H2057/02073

Abstract: A speed reducer comprises a transmission shaft, an eccentric wheel, a first wheel assembly, a rotating wheel and a second wheel assembly. The first wheel assembly comprises a first wheel disc and at least one first roller. The at least one first roller is disposed on the inner wall of first wheel disc. The rotating wheel comprises a main body comprising an outer ring structure and a concave structure. The outer ring structure comprises at least one first tooth. The at least one first tooth is in contact with the corresponding first roller. At least one second roller is disposed within the concave structure. The second wheel assembly comprises a second wheel disc and at least one second tooth. The at least one second tooth is disposed on an outer periphery of the second wheel assembly. The at least one second tooth is in contact with the corresponding second roller.

公开(公告)号：US11555531B1

公开(公告)日：2023-01-17

申请号：US17733599

申请日：2022-04-29

Applicant: Delta Electronics, Inc.

Inventor： Chi-Wen Chung ,  Hung-Wei Lin ,  Wei-Ying Chu ,  Chin-Hsiang Chen

IPC: F16H1/34 ,  F16H1/32

Abstract: A cycloid speed reducer includes an input shaft, a rolling assembly, first and second cycloid discs, a crankshaft and an output disc. The first and second cycloid discs are disposed around the input shaft and driven by the input shaft. The first and second cycloid discs are located at two opposite sides of the rolling assembly, respectively. The crankshaft includes first and second eccentric ends and first and second concentric ends integrally formed as a one-piece structure and arranged sequentially. The first and second eccentric ends are linked with the first and second cycloid discs respectively. An eccentricity value is between any neighboring two of the concentric and eccentric ends. The diameters of all the concentric and eccentric ends are equal. The output disc is linked with the first or second concentric end. The output disc is a power output end of the cycloid speed reducer.