A clutch having two stages for applying varied torque between an input shaft and an output shaft includes a clutchpack having input friction plates and output friction plates. The clutch further includes a first spring configured to apply a first pressure to the clutchpack to compress the clutchpack. The clutch further includes a second spring configured to apply a second pressure to the clutchpack to compress the clutchpack. The clutch further includes an engagement nut configured to move in response to rotation of the output shaft relative to the input shaft to compress the second spring in order to increase an amount of the second pressure applied to the clutchpack.

A clutch device is disclosed. The present device includes a driven plate having an annular shape and a clutch center. The driven plate includes a plurality of engaging recesses. The clutch center is rotatable about an rotational axis and makes the driven plate movable in an axial direction and non-rotatable relatively thereto when the driven plate is assembled thereto. Additionally, the clutch center includes a body having a cylindrical shape, one or more first teeth and one or more protruding teeth as a guide portion. The one or more first teeth are provided on the body and are configured to engage with the engaging recesses of the driven plate. The one or more protruding teeth function as a slide guide when the driven plate is slid onto the clutch center so as to be assembled thereto.

A clutch device is disclosed. The present device includes a driven plate having an annular shape and a clutch center. The driven plate includes a plurality of engaging recesses. The clutch center is rotatable about an rotational axis and makes the driven plate movable in an axial direction and non-rotatable relatively thereto when the driven plate is assembled thereto. Additionally, the clutch center includes a body having a cylindrical shape, one or more first teeth and one or more protruding teeth as a guide portion. The one or more first teeth are provided on the body and are configured to engage with the engaging recesses of the driven plate. The one or more protruding teeth function as a slide guide when the driven plate is slid onto the clutch center so as to be assembled thereto.

A clutch device includes a clutch center and a pressure plate operable to move toward or away from the clutch center and rotatable relative to the clutch center. The pressure plate includes a pressure-side cam portion. The clutch center includes a center-side cam portion. The pressure plate includes a boss extending in movement directions. The clutch center includes a through hole in which a boss is insertable. The through hole extends along circumferential directions and allows movement of the boss along the circumferential directions and the movement directions. While a surface of the pressure-side cam portion and a surface of the center-side cam portion are in contact with each other, a distal end of the boss projects outward from the through hole.

A clutch device includes a clutch center and a pressure plate operable to move toward or away from the clutch center and rotatable relative to the clutch center. The pressure plate includes a pressure-side cam portion. The clutch center includes a center-side cam portion. The pressure plate includes a boss extending in movement directions. The clutch center includes a through hole in which a boss is insertable. The through hole extends along circumferential directions and allows movement of the boss along the circumferential directions and the movement directions. While a surface of the pressure-side cam portion and a surface of the center-side cam portion are in contact with each other, a distal end of the boss projects outward from the through hole.

An improved impact structure comprising a transmission shaft, an impact disc, a driving disc, an output shaft and an impact spring, wherein the driving disc is cylindrical, a lower surface of the driving disc is provided with two V-shaped first inclined surfaces arranged symmetrically. Two V-shaped second inclined surfaces matched with the first inclined surfaces are symmetrically arranged in the middle hole of the impact disc. An output end of the transmission shaft penetrates through the impact disc and is movably connected to the output shaft. One end of the output shaft and an upper end surface of the impact disc are circumferentially provided with a first and a second impact block. One end of the impact spring extends into the inner cavity of the impact disc. Through adopting the present disclosure, the transmission shaft without V-shaped grooves has a higher strength, and qualification rate is significantly improved.

An improved impact structure comprising a transmission shaft, an impact disc, a driving disc, an output shaft and an impact spring, wherein the driving disc is cylindrical, a lower surface of the driving disc is provided with two V-shaped first inclined surfaces arranged symmetrically. Two V-shaped second inclined surfaces matched with the first inclined surfaces are symmetrically arranged in the middle hole of the impact disc. An output end of the transmission shaft penetrates through the impact disc and is movably connected to the output shaft. One end of the output shaft and an upper end surface of the impact disc are circumferentially provided with a first and a second impact block. One end of the impact spring extends into the inner cavity of the impact disc. Through adopting the present disclosure, the transmission shaft without V-shaped grooves has a higher strength, and qualification rate is significantly improved.

The disclosed clutch device includes a clutch housing, a clutch center, a pressure plate, a clutch part, and a cam mechanism. The clutch center includes a first tubular portion shaped to protrude to a first side in an axial direction. The pressure plate includes a plurality of cam portions and a second tubular portion. The plurality of cam portions include a plurality of cam surfaces shaped to protrude to a second side in the axial direction. The second tubular portion is provided on an inner peripheral side of the first tubular portion so as to protrude to the second side in the axial direction. The second tubular portion couples at least part of the plurality of cam portions. The clutch part allows and blocks transmission of power from the clutch housing to an output side. The cam mechanism includes the plurality of cam surfaces and controls a pressing force applied to the clutch part.

The disclosed clutch device includes a clutch housing, a clutch center, a pressure plate, a clutch part, and a cam mechanism. The clutch center includes a first tubular portion shaped to protrude to a first side in an axial direction. The pressure plate includes a plurality of cam portions and a second tubular portion. The plurality of cam portions include a plurality of cam surfaces shaped to protrude to a second side in the axial direction. The second tubular portion is provided on an inner peripheral side of the first tubular portion so as to protrude to the second side in the axial direction. The second tubular portion couples at least part of the plurality of cam portions. The clutch part allows and blocks transmission of power from the clutch housing to an output side. The cam mechanism includes the plurality of cam surfaces and controls a pressing force applied to the clutch part.

A friction clutch for a drivetrain of a motor vehicle includes and input part, an output part, a spring device, a pressure pot, and a connecting means connecting the pressure pot to the inner-plate carrier. The input part includes an outer-plate carrier which is rotatable about an axis of rotation by a drive motor, and an outer plate rotationally fastened to the outer-plate carrier. The input part includes a rotor carrier, an inner-plate carrier separate from the rotor carrier, and an inner plate rotationally fastened to the inner-plate carrier. The spring device is for bracing the outer plate and the inner plate together with a pressing force to close the friction clutch. The connecting means includes an actuating surface via which the friction clutch can be actuated by an actuating device.