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JP-2026076393-A - Clutch device

JP2026076393AJP 2026076393 AJP2026076393 AJP 2026076393AJP-2026076393-A

Abstract

[Problem] To effectively supply clutch oil to the center-side assist cam surface or the pressure-side assist cam surface. [Solution] In the clutch device 210, the pressure-side cam portion 260 has a first corner portion 291 that defines the opening end of the pressure-side cam hole 273H on the second direction D2 side and is located on one side of the pressure-side cam hole 273H with respect to the circumferential direction S of the pressure plate 270, and a second corner portion 292 that defines the opening end of the pressure-side cam hole 273H on the second direction D2 side and is located on the other side of the pressure-side cam hole 273H with respect to the circumferential direction S, the first corner portion 291 has an R-chamfered shape, and the second corner portion 292 has a sharp corner shape. [Selection Diagram] Figure 25

Inventors

  • 太田 智
  • 神原 真
  • 東 泰則
  • 小向 潤
  • 三室 貴義

Assignees

  • 株式会社エフ・シー・シー

Dates

Publication Date
20260511
Application Date
20260227
Priority Date
20241023

Claims (6)

  1. A clutch device for transmitting or interrupting the rotational driving force of an input shaft to an output shaft, A clutch center is housed in a clutch housing that holds a plurality of input-side rotating plates which are rotated by the rotational drive of the input shaft, and which rotates together with the output shaft, A pressure plate is provided so as to be able to approach and move away from the clutch center, and holds at least a portion of the plurality of output-side rotating plates that are arranged alternately with the input-side rotating plate, and is capable of pressing the input-side rotating plate and the output-side rotating plate. When the direction in which the pressure plate approaches and moves away from the clutch center is defined as the direction of movement, the direction in which the pressure plate approaches the clutch center is defined as the first direction, and the direction in which the pressure plate moves away from the clutch center is defined as the second direction, the device includes a stopper plate that is fixed to the clutch center, is provided so as to be in contact with the pressure plate, and prevents the pressure plate from moving away from the clutch center by a predetermined distance or more in the second direction, The aforementioned pressure plate is A plurality of pressure-side cam portions having a pressure-side assist cam surface that generates a force in the direction toward the clutch center from the pressure plate in order to increase the pressing force between the input-side rotating plate and the output-side rotating plate when rotated relative to the clutch center, and a pressure-side slipper cam surface that separates the pressure plate from the clutch center in order to decrease the pressing force between the input-side rotating plate and the output-side rotating plate, It comprises a plurality of pressure-side cam holes formed through the adjacent pressure-side cam portions, When the direction from one side to the other is defined as the first circumferential direction and the direction from the other side to the one side is defined as the second circumferential direction, the pressure plate is configured to rotate in the first circumferential direction. Viewed from the axial direction of the output shaft, the first circumferential edge of the pressure-side assist cam surface is located on the first circumferential side of the second circumferential edge of the pressure-side cam hole. The aforementioned pressure-side cam portion is A clutch device having a first corner portion that defines the opening end on the second direction side of the pressure-side cam hole, is located on the second circumferential side of the pressure-side cam hole with respect to the circumferential direction, and has an R-chamfered shape.
  2. The pressure-side assist cam surface extends radially, The clutch device according to claim 1, wherein the first corner extends radially from the radially inner edge of the pressure-side assist cam surface to the radially outer edge of the pressure-side assist cam surface.
  3. The clutch device according to claim 2, wherein the first corner extends radially outward beyond the radially outer edge of the pressure-side assist cam surface, with respect to the radial direction.
  4. A clutch device for transmitting or interrupting the rotational driving force of an input shaft to an output shaft, A clutch center is housed in a clutch housing that holds a plurality of input-side rotating plates which are rotated by the rotational drive of the input shaft, and which rotates together with the output shaft, A pressure plate is provided so as to be able to approach and move away from the clutch center, and holds at least a portion of the plurality of output-side rotating plates that are arranged alternately with the input-side rotating plate, and is capable of pressing the input-side rotating plate and the output-side rotating plate. When the direction in which the pressure plate approaches and moves away from the clutch center is defined as the direction of movement, the direction in which the pressure plate approaches the clutch center is defined as the first direction, and the direction in which the pressure plate moves away from the clutch center is defined as the second direction, the device comprises a stopper plate fixed to the pressure plate, The clutch center is, A plurality of center-side cam portions having a center-side assist cam surface that generates a force in the direction toward the clutch center from the pressure plate in order to increase the pressing force between the input-side rotating plate and the output-side rotating plate when rotated relative to the pressure plate, and a center-side slipper cam surface that separates the pressure plate from the clutch center in order to decrease the pressing force between the input-side rotating plate and the output-side rotating plate, It comprises a plurality of center-side cam holes formed through the adjacent center-side cam portions, When the direction from one side to the other is defined as the first circumferential direction and the direction from the other side to the one side is defined as the second circumferential direction, the clutch center is configured to rotate in the first circumferential direction. Viewed from the axial direction of the output shaft, the second circumferential edge of the center-side assist cam surface is located on the second circumferential side of the center-side cam hole than the first circumferential edge of the center-side cam hole. The aforementioned center-side cam portion is A clutch device having a first corner portion that defines the opening end of the center cam hole on the first direction side, is located on the first circumferential side of the center cam hole with respect to the circumferential direction, and has an R-chamfered shape.
  5. The aforementioned center-side assist cam surface extends radially, The clutch device according to claim 4, wherein the first corner extends radially from the radially inner edge of the center-side assist cam surface to the radially outer edge of the center-side assist cam surface.
  6. The clutch device according to claim 5, wherein the first corner extends radially outward beyond the radially outer edge of the center-side assist cam surface, with respect to the radial direction.

Description

This invention relates to a clutch device. Conventionally, vehicles such as motorcycles have been equipped with clutch devices. For example, Patent Document 1 discloses a clutch device comprising a clutch center that holds a portion of the output-side rotating plate, and a pressure plate that is provided so as to be able to approach and move away from the clutch center and also holds a portion of the output-side rotating plate. The clutch center and the pressure plate each comprise an annular outer wall and a plurality of fitting teeth projecting radially outward from the outer surface of the outer wall, and the output-side rotating plate is held by the fitting teeth. Furthermore, the clutch center and pressure plate of the clutch device described in Patent Document 1 are equipped with a center-side assist cam surface and a pressure-side assist cam surface, respectively, which generate a force that moves the pressure plate closer to the clutch center when the rotational driving force of the engine can be transmitted to the output shaft, thereby increasing the pressing force between the input-side rotating plate and the output-side rotation. Japanese Patent Publication No. 2018-204655 Figure 1 is a cross-sectional view of a clutch device according to the first embodiment.Figure 2 is a perspective view of the clutch center according to the first embodiment.Figure 3 is a plan view of the clutch center according to the first embodiment.Figure 4 is a perspective view of the clutch center according to the first embodiment.Figure 5 is a plan view of the clutch center according to the first embodiment.Figure 6 is a perspective view of a pressure plate according to the first embodiment.Figure 7 is a plan view of a pressure plate according to the first embodiment.Figure 8 is a perspective view of a pressure plate according to the first embodiment.Figure 9 is a plan view of a pressure plate according to the first embodiment.Figure 10A is a schematic diagram illustrating the operation of the center-side assist cam surface and the pressure-side assist cam surface.Figure 10B is a schematic diagram illustrating the operation of the center-side slipper cam surface and the pressure-side slipper cam surface.Figure 11 is a schematic diagram showing the positional relationship between the center-side annular portion and the pressure-side annular portion when viewed from the axial direction of the output shaft.Figure 12 is a plan view showing the clutch center and pressure plate as seen from the axial direction of the output shaft, in a state where the center-side assist cam surface and the pressure-side assist cam surface are in contact.Figure 13 is a side view showing the state in which a part of the center-side projection and the pressure-side spline groove overlap when viewed from the radial direction of the output shaft.Figure 14 is a side view showing a state in which a gap is formed between the center-side projection and the pressure plate when viewed from the radial direction of the output shaft.Figure 15 is a side view showing the relationship between the outermost output-side rotating plate and the center-side projection when viewed from the radial direction of the output shaft.Figure 16 is a side view showing the state in which a portion of the pressure-side projection and the center-side spline groove overlap when viewed from the radial direction of the output shaft.Figure 17 is a cross-sectional view of the clutch device according to the second embodiment.Figure 18 is a perspective view of the clutch center according to the second embodiment.Figure 19 is a plan view of the clutch center according to the second embodiment.Figure 20 is a perspective view of the clutch center according to the second embodiment.Figure 21 is a plan view of the clutch center according to the second embodiment.Figure 22 is a perspective view of a pressure plate according to the second embodiment.Figure 23 is a plan view of a pressure plate according to the second embodiment.Figure 24 is a perspective view of a pressure plate according to the second embodiment.Figure 25 is a plan view of a pressure plate according to the second embodiment.Figure 26 is a schematic diagram showing the positional relationship between the center-side annular portion and the pressure-side annular portion when viewed from the axial direction of the output shaft.Figure 27 is a schematic diagram showing the positional relationship between the center-side mating teeth and the pressure-side mating teeth when viewed from the axial direction of the output shaft.Figure 28 is a schematic diagram showing the positional relationship between the center-side mating teeth and the pressure-side mating teeth when viewed from the axial direction of the output shaft.Figure 29 is a schematic diagram showing the positional relationship between the center-side mating teeth and the pressure-side mating teeth when viewed from the axial direction of the output shaft.Figure 30 is a tab