US 11,796,012 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. 24, 2022, as Appl. No. 17/582,593.
Application 17/582,593 is a continuation of application No. PCT/JP2020/028597, filed on Jul. 23, 2020.
Claims priority of application No. 2019-138331 (JP), filed on Jul. 26, 2019; and application No. 2020-033760 (JP), filed on Feb. 28, 2020.
Prior Publication US 2022/0145942 A1, May 12, 2022
Int. Cl. F16D 23/12 (2006.01); F16D 13/58 (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) [F16D 13/58 (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)] 11 Claims
OG exemplary drawing
 
1. A clutch device comprising:
a housing;
a prime mover provided in the housing and capable of outputting torque;
a speed reducer configured to reduce torque of the prime mover and output the reduced torque;
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 provided radially outward of the translation portion and configured to
be movable in the axial direction relative to the translation portion,
be movable in the axial direction relative to the housing such that the state changing unit is in contact with the clutch or separated from the clutch,
receive a force along the axial direction from the translation portion such that the state changing unit is pressed against the clutch, 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 movement restriction portion provided on the translation portion and located between the state changing unit and the clutch, and the movement restriction portion being configured to restrict movement of the state changing unit in a direction toward the clutch relative to the translation portion by the movement restriction portion contacting the state changing unit, wherein
a predetermined clearance is formed, in the axial direction of the translation portion, between the state changing unit and the movement restriction portion in the engaged state, and
the state changing unit is in contact with the movement restriction portion in the disengaged state.