US 11,808,307 B2
Clutch device
Akikazu Uchida, Kariya (JP); Takumi Sugiura, Kariya (JP); and Akira Takagi, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jan. 24, 2022, as Appl. No. 17/582,754.
Application 17/582,754 is a continuation of application No. PCT/JP2020/028601, filed on Jul. 23, 2020.
Claims priority of application No. 2019-138331 (JP), filed on Jul. 26, 2019; and application No. 2020-125672 (JP), filed on Jul. 22, 2020.
Prior Publication US 2022/0145943 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F16D 23/12 (2006.01); F16H 37/12 (2006.01); H02K 7/108 (2006.01); H02K 7/116 (2006.01); F16D 13/52 (2006.01); F16D 125/36 (2012.01); F16D 125/50 (2012.01)
CPC F16D 23/12 (2013.01) [F16H 37/124 (2013.01); H02K 7/108 (2013.01); H02K 7/116 (2013.01); F16D 13/52 (2013.01); F16D 2023/123 (2013.01); F16D 2125/36 (2013.01); F16D 2125/50 (2013.01)] 7 Claims
OG exemplary drawing
 
1. 1. A clutch device comprising:
a housing;
a prime mover including a stator fixed to the housing, and a rotor rotatable relative to the stator, the prime mover being capable of outputting torque from the rotor by supply of electric power to the prime mover;
a speed reducer configured to output the torque of the prime mover at a reduced speed;
a rotational translation unit including a rotation portion that rotates relative to the housing upon receiving an input of the torque output from the speed reducer, and a translation portion that moves relative to the housing in an axial direction in accordance with rotation of the rotation portion relative to the housing;
a clutch provided between a first transmission portion and a second transmission portion that are rotatable relative to the housing, the clutch being configured to allow transmission of torque between the first transmission portion and the second transmission portion in an engaged state of the clutch, and interrupt the transmission of torque between the first transmission portion and the second transmission portion in a disengaged state of the clutch; and
a state changing unit configured to receive a force along the axial direction from the translation portion and change a state of the clutch to the engaged state or the disengaged state according to a position of the translation portion in the axial direction relative to the housing, wherein
the speed reducer includes
a sun gear to which the torque from the rotor is input,
a planetary gear configured to revolve in a circumferential direction of the sun gear while rotating in a state of meshing with the sun gear,
a carrier rotatably supporting the planetary gear and being rotatable relative to the sun gear,
a first ring gear capable of meshing with the planetary gear, and
a second ring gear capable of meshing with the planetary gear and outputting the torque to the rotation portion, the second ring gear being different from the first ring tear in number of teeth of a tooth portion, and
the rotor and the sun gear are formed separately, and are disposed coaxially so as to be integrally rotatable, and
the rotor and the sun gear are directly joined to each other.