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US 12,742,480 B2Granted
Clutch apparatus and motorcycle
AssigneeKabushiki Kaisha F.C.C.
InventorYuki Kobayashi
Life of this patent
Estimating the term…
Abstract
A clutch apparatus includes a pressure plate that is able to push input-side rotary plates and output-side rotary plates. The pressure plate includes an annular portion, a base wall radially outward of the annular portion, an outer peripheral wall radially outward of the base wall, a pressure-side cam hole extending through the base wall, and ribs extending in a second direction from a surface of the base wall, which is connected to the annular portion. The ribs and the outer peripheral wall are spaced away from each other in a radial direction.
Claims11
A clutch apparatus to transmit a rotational driving force of an input shaft to an output shaft or cut off the rotational driving force, the clutch apparatus comprising:
- a clutch center housed in a clutch housing holding input-side rotary plates to be rotationally driven in response to rotational driving of the input shaft, the clutch center being rotationally drivable together with the output shaft;
- and
- a pressure plate that is movable toward or away from the clutch center and rotatable relative to the clutch, the pressure plate holding output-side rotary plates alternatingly positioned with the input-side rotary plates center and being operable to push the input-side rotary plates and the output-side rotary plates;
- wherein
- the pressure plate includes:
- an annular portion;
- a base wall radially outward of the annular portion;
- an annular outer peripheral wall radially outward of the base wall and extending in a movement direction, assuming that a direction in which the pressure plate is movable toward and away from the clutch center is the movement direction, a direction in which the pressure plate is movable toward the clutch center is a first direction, and a direction in which the pressure plate is movable away from the clutch center is a second direction;
- a through hole extending through the base wall in the movement direction;
- and
- ribs extending in the second direction from a surface of the base wall located in the second direction, the ribs being connected to the annular portion;
- and
- the ribs and the outer peripheral wall are spaced away from each other in a radial direction.
10 more elements
A clutch apparatus to transmit a rotational driving force of an input shaft to an output shaft or cut off the rotational driving force, the clutch apparatus comprising:
- a clutch center housed in a clutch housing holding input-side rotary plates to be rotationally driven in response to rotational driving of the input shaft, the clutch center being rotationally drivable together with the output shaft;
- and
- a pressure plate that is movable toward or away from the clutch center and rotatable relative to the clutch center, the pressure plate holding output-side rotary plates alternatingly positioned with the input-side rotary plates and being operable to push the input-side rotary plates and the output-side rotary plates;
- wherein
- the pressure plate includes:
- an annular portion;
- a base wall radially outward of the annular portion;
- pressure-side cam portions protruding in a first direction from a surface of the base wall located in the first direction, the pressure-side cam portions including pressure-side assist cam surfaces to, upon being rotated relative to the clutch center, produce a force in a direction in which the pressure plate is movable toward the clutch center so as to increase a pushing force for the input-side rotary plates and the output-side rotary plates, assuming that a direction in which the pressure plate is movable toward and away from the clutch center is a movement direction, a direction in which the pressure plate is movable toward the clutch center is the first direction, and a direction in which the pressure plate is movable away from the clutch center is a second direction;
- an annular outer peripheral wall radially outward of the base wall and extending in the movement direction;
- a through hole extending through the base wall in the movement direction so as to be located between adjacent ones of the pressure-side cam portions;
- and
- ribs extending in the second direction from a surface of the base wall located in the second direction, the ribs being connected to the annular portion;
- and
- the ribs and the outer peripheral wall are spaced away from each other in a radial direction.
11 more elements
A clutch apparatus to transmit a rotational driving force of an input shaft to an output shaft or cut off the rotational driving force, the clutch apparatus comprising:
- a clutch center housed in a clutch housing holding input-side rotary plates to be rotationally driven in response to rotational driving of the input shaft, the clutch center being rotationally drivable together with the output shaft;
- and
- a pressure plate that is movable toward or away from the clutch center and rotatable relative to the clutch center, the pressure plate holding output-side rotary plates alternatingly positioned with the input-side rotary plates and being operable to push the input-side rotary plates and the output-side rotary plates;
- wherein the pressure plate includes:
- an annular portion;
- a base wall radially outward of the annular portion;
- pressure-side cam portions protruding in a first direction from a surface of the base wall located in the first direction, the pressure-side cam portions including pressure-side slipper cam surfaces to, upon being rotated relative to the clutch center, move the pressure plate away from the clutch center so as to reduce a pushing force for the input-side rotary plates and the output-side rotary plates, assuming that a direction in which the pressure plate is movable toward and away from the clutch center is a movement direction, a direction in which the pressure plate is movable toward the clutch center is the first direction, and a direction in which the pressure plate is movable away from the clutch center is a second direction;
- an annular outer peripheral wall radially outward of the base wall and extending in the movement direction;
- a through hole extending through the base wall in the movement direction so as to be located between adjacent ones of the pressure-side cam portions;
- and
- ribs extending in the second direction from a surface of the base wall located in the second direction, the ribs being connected to the annular portion;
- and
- the ribs and the outer peripheral wall are spaced away from each other in a radial direction.
10 more elements
Dependencies are inferred from the claim text.