公开(公告)号：US20220145945A1

公开(公告)日：2022-05-12

申请号：US17582899

申请日：2022-01-24

Applicant: DENSO CORPORATION

Inventor： Takumi SUGIURA

IPC: F16D23/12 ,  F16D13/58 ,  F16H37/12 ,  H02K7/108 ,  H02K7/116

Abstract: A prime mover includes a stator fixed to a housing, and a rotor rotatable relative to the stator. The prime mover is capable of outputting torque from the rotor by being supplied with electric power. A speed reducer is capable of reducing the torque of the prime mover and outputting the reduced torque. The speed reducer includes a sun gear rotatable integrally with the rotor, and planetary gears capable of revolving in a circumferential direction of the sun gear while rotating in a state of meshing with the sun gear. A gear width of the sun gear is set such that a length in the axial direction by which the sun gear and the planetary gear are overlapped is smaller than a gear width of the planetary gear.

公开(公告)号：US20220136568A1

公开(公告)日：2022-05-05

申请号：US17576394

申请日：2022-01-14

Applicant: DENSO CORPORATION

Inventor： Souichirou HAYASHI ,  Takumi SUGIURA ,  Akira TAKAGI

IPC: F16D23/12 ,  F16H57/02 ,  F16H37/12 ,  H02K7/108 ,  H02K7/116

Abstract: A rotational translation unit includes a rotation portion that rotates relative to a housing upon receiving an input of torque output from a speed reducer, and a translation portion that moves relative to the housing in an axial direction according to rotation of the rotation portion relative to the housing. A clutch is provided between a first transmission portion and a second transmission portion that are rotatable relative to the housing, and the clutch allows transmission of the torque between the first transmission portion and the second transmission portion in an engaged state of the clutch, and interrupts the transmission of the torque between the first transmission portion and the second transmission portion in a disengaged state of the clutch. A return spring is capable of urging the rotational translation unit in a direction away from the clutch relative to the housing.

公开(公告)号：US20230313847A1

公开(公告)日：2023-10-05

申请号：US18327424

申请日：2023-06-01

Applicant: DENSO CORPORATION

Inventor： Akira TAKAGI ,  Takumi SUGIURA ,  Masashi NAKAGAWA

IPC: F16D28/00 ,  F16D48/06 ,  H02K7/108 ,  H02K7/116

CPC classification number: F16D28/00 ,  F16D48/064 ,  H02K7/108 ,  H02K7/116 ,  F16D2127/02

Abstract: A first drive cam groove extends from a drive cam specific position to one side in a circumferential direction. A second drive cam groove extends from the drive cam specific position to the other side in the circumferential direction, and an inclination angle of a groove bottom with respect to one end surface of the drive cam main body is larger than that of the first drive cam groove. A first driven cam groove extends from a driven cam specific position to one side in a circumferential direction. A second driven cam groove extends from the driven cam specific position to the other side in the circumferential direction, and an inclination angle of a groove bottom with respect to one end surface of the driven cam main body is larger than that of the first driven cam groove.

公开(公告)号：US20210115983A1

公开(公告)日：2021-04-22

申请号：US17137725

申请日：2020-12-30

Applicant: DENSO CORPORATION

Inventor： Takumi SUGIURA ,  Akira TAKAGI

IPC: F16D23/12

Abstract: In a drive cam groove, a groove bottom is sloped such that a depth of the groove bottom continuously decreases from one end to the other end of the drive cam groove. The drive cam groove has: a first drive cam groove that is formed such that a distance between a center of a drive cam and the groove bottom at the first drive cam groove continuously changes from the one end toward the other end of the drive cam groove; and a second drive cam groove that is formed such that a distance between the center of the drive cam and the groove bottom at the second drive cam groove is constant from the first drive cam groove to the other end of the drive cam groove.

公开(公告)号：US20230304543A1

公开(公告)日：2023-09-28

申请号：US18327381

申请日：2023-06-01

Applicant: DENSO CORPORATION

Inventor： Tomonori SUZUKI ,  Takumi SUGIURA ,  Akira TAKAGI

IPC: F16D28/00 ,  F16H57/08 ,  H02K7/116

CPC classification number: F16D28/00 ,  F16H57/082 ,  H02K7/116 ,  F16D2127/02

Abstract: A rotary actuator includes a housing, a motor, a speed reducer, and a rotational translation unit. The motor includes a stator that includes a coil and is fixed to the housing, and a rotor that is provided with a magnet and rotates when the coil is energized. The speed reducer decelerates and outputs a torque of the motor. The speed reducer is a planetary gear mechanism including a sun gear, multiple planetary gears, and a ring gear. At least one of projection region components, which are components constituting the speed reducer and are located in a magnet projection region obtained by projecting a magnet in an axial direction, is formed of a non-magnetic material.

公开(公告)号：US20210115981A1

公开(公告)日：2021-04-22

申请号：US17137730

申请日：2020-12-30

Applicant: DENSO CORPORATION

Inventor： Ryo ISHIBASHI ,  Akira TAKAGI ,  Takumi SUGIURA

IPC: F16D13/52 ,  F16H25/12

Abstract: A speed reducer is configured to reduce a rotational speed of rotation generated by torque received from a drive device and output the torque of the rotation of the reduced rotational speed. A drive cam has a plurality of drive cam grooves formed at one end surface of the drive cam and is rotated by the torque outputted from the speed reducer. A driven cam has a plurality of driven cam grooves formed at one end surface of the driven cam while each of the plurality of rolling elements is clamped between a corresponding one of the plurality of drive cam grooves and a corresponding one of the plurality of driven cam grooves. At least a part of each of the plurality of drive cam grooves overlaps with the speed reducer in the axial direction.

公开(公告)号：US20240102516A1

公开(公告)日：2024-03-28

申请号：US18531105

申请日：2023-12-06

Applicant: DENSO CORPORATION

Inventor： Takumi SUGIURA ,  Atsuhiro FURUICHI

IPC: F16D23/12 ,  F16D28/00 ,  F16H1/28 ,  F16H57/02 ,  F16H57/08

CPC classification number: F16D23/12 ,  F16D28/00 ,  F16H1/28 ,  F16H57/02 ,  F16H57/082 ,  F16D2023/123 ,  F16H2057/02034 ,  F16H2057/02043 ,  F16H2057/085

Abstract: A planetary gear has: a first planetary gear annular surface formed at one axial end of the planetary gear and a second planetary gear annular surface formed at another axial end of the planetary gear. A sun gear has a sun gear annular surface that is opposed to the first planetary gear annular surface. A second ring gear has an output-side annular surface that is opposed to the second planetary gear annular surface. A relative movement of a carrier subassembly relative to a housing in an axial direction is limited when the first planetary gear annular surface abuts against the sun gear annular surface or when the second planetary gear annular surface abuts against the output-side annular surface.

公开(公告)号：US20230304546A1

公开(公告)日：2023-09-28

申请号：US18327640

申请日：2023-06-01

Applicant: DENSO CORPORATION

Inventor： Soichiro HAYASHI ,  Takumi SUGIURA

IPC: F16D28/00 ,  F16H57/08 ,  H02K7/108 ,  H02K7/116

CPC classification number: F16D28/00 ,  F16H57/082 ,  H02K7/108 ,  H02K7/116 ,  F16D2127/02

Abstract: A prime mover includes a stator fixed to a housing and a rotor provided rotatably relative to the stator, and is capable of outputting a torque from the rotor. A speed reducer includes a sun gear, multiple planetary gears, a carrier, a first ring gear, and a second ring gear. The sun gear receives the torque from the rotor. The rotor is provided on a radially inner side of the stator, and is connected to the sun gear to be rotatable integrally with the sun gear.

公开(公告)号：US20220145946A1

公开(公告)日：2022-05-12

申请号：US17582949

申请日：2022-01-24

Applicant: DENSO CORPORATION

Inventor： Ryo ISHIBASHI ,  Takumi SUGIURA

IPC: F16D23/12 ,  F16C19/06 ,  F16D13/32 ,  F16D13/46 ,  F16D13/52 ,  F16D25/0638 ,  F16D43/26 ,  F16D48/02

Abstract: A state changing unit is capable of contacting a clutch, and being configured to receive a force along the axial direction from a translation portion and change a state of the clutch to an engaged state or a disengaged state according to a position of the translation portion in an axial direction relative to a housing. A fixed end is non-rotatable relative to the housing. A return spring is disposed on a side of the fixed end opposite to the clutch, and capable of urging the translation portion in a direction away from the clutch with respect to the fixed end.

公开(公告)号：US20220145944A1

公开(公告)日：2022-05-12

申请号：US17582780

申请日：2022-01-24

Applicant: DENSO CORPORATION

Inventor： Takumi SUGIURA

IPC: F16D23/12 ,  F16H37/12 ,  H02K7/108 ,  H02K7/116

Abstract: A sun gear of a speed reducer is provided coaxially with and integrally rotatably with a rotor of a prime mover. Multiple planetary gears are disposed in a circumferential direction of the sun gear, and are capable of revolving in the circumferential direction of the sun gear while rotating in a state of meshing with the sun gear. A carrier rotatably supports the planetary gears, and is rotatable relative to the sun gear. A first ring gear is fixed to a housing, and has a first ring gear tooth portion capable of meshing with the planetary gears. A second ring gear is rotatable integrally with a rotation portion, and has a second ring gear tooth portion capable of meshing with the planetary gears. The second ring gear tooth portion is different in number of teeth from the first ring gear tooth portion.