US 11,815,136 B2
Clutch device
Souichirou Hayashi, 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. 14, 2022, as Appl. No. 17/576,394.
Application 17/576,394 is a continuation of application No. PCT/JP2020/028599, filed on Jul. 23, 2020.
Claims priority of application No. 2019-138331 (JP), filed on Jul. 26, 2019; and application No. 2020-125566 (JP), filed on Jul. 22, 2020.
Prior Publication US 2022/0136568 A1, May 5, 2022
Int. Cl. F16D 23/12 (2006.01); F16H 37/12 (2006.01); F16H 57/02 (2012.01); H02K 7/108 (2006.01); H02K 7/116 (2006.01); F16D 13/22 (2006.01); F16D 125/36 (2012.01); F16D 127/02 (2012.01)
CPC F16D 23/12 (2013.01) [F16H 37/124 (2013.01); F16H 57/02 (2013.01); H02K 7/108 (2013.01); H02K 7/116 (2013.01); F16D 13/22 (2013.01); F16D 2023/123 (2013.01); F16D 2125/36 (2013.01); F16D 2127/02 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02043 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A clutch device comprising:
a housing;
a prime mover provided in the housing and including a stator fixed to the housing, and a rotor rotatable relative to the stator, the prime mover being capable of outputting torque;
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;
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; and
a return spring configured to urge the rotational translation unit relative to the housing in a direction away from the clutch, wherein
the return spring is configured to hold at least the rotational translation unit at a predetermined assembling position relative to the housing, and
the stator and the rotor are each entirely housed in the housing, and the rotor and the rotation portion are coaxial.