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US 11,767,890 B2Granted
Clutch device
AssigneeDenso Corporation
InventorsTakumi Sugiura, Akikazu Uchida
Life of this patent
Estimating the term…
Abstract
A prime mover includes a stator fixed to a housing and a rotor relatively rotatable relative to the stator. The prime mover outputs torque from the rotor by being supplied with electric power. A speed reducer reduces the torque of the prime mover and outputs the reduced torque. One bearing portion rotatably supports the rotor. The speed reducer includes an input portion that is coaxial and integrally rotatable with the rotor and receives the torque from the rotor.
Claims12
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 reduce torque of the prime mover and output the reduced torque;
- a rotational translation unit including a rotation portion configured to rotate relative to the housing upon receiving an input of the torque output from the speed reducer, and a translation portion configured to move relative to the housing in an axial direction in accordance with rotation of the rotation portion relative to the housing;
- a clutch disposed 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 to interrupt the transmission of the 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
- one bearing portion rotatably supporting the rotor, wherein
- the speed reducer includes an input portion coaxial and integrally rotatable with the rotor and configured to receive the torque from the rotor,
- the prime mover and the speed reducer are provided in an accommodation space formed inside the housing, the rotation portion being positioned between the accommodation space and the clutch,
- the clutch is disposed in a clutch space, the rotation portion being positioned between the accommodation space and the clutch space, and
- the clutch device further comprises an annular sealing member being in contact with the rotation portion and maintaining an air-tight or liquid-tight state between the accommodation space and the clutch space.
9 more elements
Dependencies are inferred from the claim text.