公开(公告)号：US11149799B2

公开(公告)日：2021-10-19

申请号：US16925794

申请日：2020-07-10

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Junichi Nishikawa ,  Katsu Yoshimoto ,  Han Hiong Chen ,  Yoshihiko Ozawa

IPC: F16D13/52 ,  F16D23/12

Abstract: A power transmission device has a pressure member (5) pressing drive-side clutch plates and driven-side clutch plates against each other or releasing a press-contact force. A clutch spring (10) urges the pressure member (5) in a direction so that the clutch plates are pressed against each other. A separate receiving member (11) is attached to the pressure member (5). A back-torque limiting cam reduces press-contact force between the clutch plates when the rotation speed of an output member exceeds the rotation speed of an input member. A rotation restricting portion (8a) restricting rotation, relative to the clutch member (4), of the pressure member (5) that has moved due to activation of the push rod (9). A clearance t is maintained between the pair of cam surfaces that constitute the back-torque limiting cam.

公开(公告)号：US11359678B2

公开(公告)日：2022-06-14

申请号：US16925724

申请日：2020-07-10

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Junichi Nishikawa ,  Katsu Yoshimoto ,  Han Hiong Chen ,  Yoshihiko Ozawa

IPC: F16D13/52 ,  F16D23/12

Abstract: A power transmission device has a pressure member 5, drive-side clutch plates, driven-side clutch plates, a clutch spring 10, a separate receiving member 11, and a back-torque limiting cam. A radially-outside restricting portion restricts radially-outward movement of the receiving member 11 relative to the pressure member 5. This maintains clearance t between a side surface 11d of the receiving member 11 and an inner peripheral wall 4e of a clutch member 4.

公开(公告)号：US20200340537A1

公开(公告)日：2020-10-29

申请号：US16925794

申请日：2020-07-10

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Junichi Nishikawa ,  Katsu YOSHIMOTO ,  Han Hiong CHEN ,  Yoshihiko OZAWA

IPC: F16D13/52 ,  F16D23/12

Abstract: A power transmission device has a pressure member (5) pressing drive-side clutch plates and driven-side clutch plates against each other or releasing a press-contact force. A clutch spring (10) urges the pressure member (5) in a direction so that the clutch plates are pressed against each other. A separate receiving member (11) is attached to the pressure member (5). A back-torque limiting cam reduces press-contact force between the clutch plates when the rotation speed of an output member exceeds the rotation speed of an input member. A rotation restricting portion (8a) restricting rotation, relative to the clutch member (4), of the pressure member (5) that has moved due to activation of the push rod (9). A clearance t is maintained between the pair of cam surfaces that constitute the back-torque limiting cam.

公开(公告)号：US11788583B1

公开(公告)日：2023-10-17

申请号：US18218292

申请日：2023-07-05

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Junichi Nishikawa ,  Jun Komukai ,  Satoshi Ota

IPC: F16D13/56

CPC classification number: F16D13/56 ,  F16D2013/565

Abstract: A clutch device includes a clutch center holding output-side rotating plates alternately arranged with input-side rotating plates, and a pressure plate movable toward or away from the clutch center. The pressure plate includes pressure-side fitting teeth holding the output-side rotating plates. The clutch center includes center-side fitting teeth holding the output-side rotating plates. In a half-clutch state, a portion of one of the center-side fitting teeth overlap with a portion of one of the pressure-side fitting teeth when seen in the radial directions of an output shaft.

公开(公告)号：US20200340536A1

公开(公告)日：2020-10-29

申请号：US16925724

申请日：2020-07-10

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Junichi Nishikawa ,  Katsu YOSHIMOTO ,  Han Hiong CHEN ,  Yoshihiko OZAWA

IPC: F16D13/52 ,  F16D23/12

Abstract: A power transmission device has a pressure member 5, drive-side clutch plates, driven-side clutch plates, a clutch spring 10, a separate receiving member 11, and a back-torque limiting cam. A radially-outside restricting portion restricts radially-outward movement of the receiving member 11 relative to the pressure member 5. This maintains clearance t between a side surface 11d of the receiving member 11 and an inner peripheral wall 4e of a clutch member 4.

公开(公告)号：US10781865B2

公开(公告)日：2020-09-22

申请号：US16044573

申请日：2018-07-25

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Kenichiro Isobe ,  Junichi Nishikawa ,  Naoki Kishimoto ,  Yuki Kobayashi

IPC: F16D13/56 ,  F16D13/04 ,  F16D13/54

Abstract: A power transmitting apparatus inputs or cuts off rotational power of an input member (1) to an output member (3) by press-contacting a plurality of driving-side clutch discs (6) and a plurality of driven-side clutch discs (7) with each other or releases them. A clutch housing (2) includes the driving-side clutch discs (6). A clutch member is (4) connected to the output member (3). A pressure member (5) press-contacts the discs (6) and discs (7) with each other or releases the press-contacting force between them. Application of a resisting force, for resisting relative rotation between the clutch member (4) and the pressure member (5), can be attained. A magnitude of the resisting force is set larger than a sticking torque between the discs (6) and discs (7).