公开(公告)号：US11703093B2

公开(公告)日：2023-07-18

申请号：US17918396

申请日：2020-09-14

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Katsu Yoshimoto

IPC: F16D13/54 ,  F16D43/12 ,  F16D43/30

CPC classification number: F16D13/54 ,  F16D43/12 ,  F16D43/30

Abstract: During movement of a mass of a centrifugal clutch a radially inner position to a radially outer position and a resulting increase in torque transmitted from an input gear to an output shaft, a power transmission apparatus includes a first torque region where the apparatus restricts operation of a pressing assist cam and a second torque region where the apparatus allows operation of the pressing assist cam.

公开(公告)号：US11661981B2

公开(公告)日：2023-05-30

申请号：US17860341

申请日：2022-07-08

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Katsu Yoshimoto

IPC: F16D43/12 ,  F16D13/52 ,  F16D43/206 ,  B60K17/02 ,  F16D67/02

CPC classification number: F16D43/12 ,  B60K17/02 ,  F16D13/52 ,  F16D43/206 ,  F16D67/02

Abstract: A power transmission device has a first pressure member (5a), a second pressure member (5b) and a back-torque transmitting cam. The first pressure member (5a) presses the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other. The second pressure member (5b) releases a press-contact force between the drive-side clutch plates (6) and the driven-side clutch plates (7). The back-torque transmitting cam moves the second pressure member (5b) relative to the first pressure member (5a) to keep pressing the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other when a rotational force is input to the clutch member (4), via the output shaft (3), in a process where the weight member (8) moves from the radially-outer position to the radially-inner position and the first pressure member (5a) moves to follow the interlocking member (9).

公开(公告)号：US11434966B2

公开(公告)日：2022-09-06

申请号：US17336479

申请日：2021-06-02

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Katsu Yoshimoto

IPC: F16D43/12 ,  F16D67/02 ,  B60K17/02 ,  F16D13/52 ,  F16D43/206

Abstract: A power transmission device has a first pressure member (5a), a second pressure member (5b) and a back-torque transmitting cam. The first pressure member (5a) presses the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other. The second pressure member (5b) releases a press-contact force between the drive-side clutch plates (6) and the driven-side clutch plates (7). The back-torque transmitting cam moves the second pressure member (5b) relative to the first pressure member (5a) to keep pressing the drive-side clutch plates (6) and the driven-side clutch plates (7) against each other when a rotational force is input to the clutch member (4), via the output shaft (3), in a process where the weight member (8) moves from the radially-outer position to the radially-inner position and the first pressure member (5a) moves to follow the interlocking member (9).

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：US20200232520A1

公开(公告)日：2020-07-23

申请号：US16804032

申请日：2020-02-28

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Makoto Kataoka ,  Masataka Murai ,  Kaoru Aono ,  Yuta Kine ,  Yuta Yokomichi

IPC: F16D21/08 ,  F16D25/0638 ,  F16D11/10 ,  F16D19/00

Abstract: A power transmission device has a back torque transmission cam that brings driving clutch plates 6 and driven clutch plates 7 into press contact with each other. A second clutch member 4b is moved when a rotational force is input to a first clutch member 4a via the output shaft 3. The pressure member 5 is located at a non-actuation position. A torque transmission portion transmits a rotational force transmitted to the second clutch member 4b to the first clutch member 4a not via the back torque transmission cam.

公开(公告)号：US11732760B2

公开(公告)日：2023-08-22

申请号：US17877977

申请日：2022-07-31

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Makoto Kataoka ,  Masataka Murai

IPC: F16D13/56 ,  F16D43/12

CPC classification number: F16D13/56 ,  F16D43/12 ,  F16D2013/565

Abstract: A power transmission device has an interlocking member 9 moving a pressure member 5 from an inactive position to an active position. A release spring (m) applies an urging force, while allowing movements of the interlocking member 9 and the pressure member 5, until drive-side clutch plates 6 and driven-side clutch plates 7 reach an engaged state before the drive-side clutch plates 6 and the driven-side clutch plates 7 are pressed against each other. A clutch spring 11 is compressed in a process where the interlocking member 9 moves after the drive-side clutch plates 6 and the driven-side clutch plates 7 have reached the engaged state. The clutch spring applying a press-contact force between the drive-side clutch plates 6 and the driven-side clutch plates 7 while allowing movements of the interlocking member 9 and the pressure member 5. The set load of the clutch spring 11 is set to be smaller than the maximum load of the release spring (m).

公开(公告)号：US11603892B2

公开(公告)日：2023-03-14

申请号：US17861228

申请日：2022-07-10

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Makoto Kataoka ,  Masataka Murai

IPC: F16D43/12 ,  F16D13/52 ,  F16D43/206

Abstract: A power transmission device has a first clutch member 4a coupled to an output member 3. A second clutch member 4b has a plurality of driven-side clutch plates 7. A back-torque transmitting cam presses the drive-side clutch plates 6 and the driven-side clutch plates 7 against each other by moving the second clutch member 4b when a rotational force is input to the first clutch member 4a. A cushioning member 12 is interposed between the first clutch member 4a and the second clutch member 4b. The cushioning member 12, by being compressed, applies an urging force while allowing movements of an interlocking member 9 and a pressure member 5 in a process where the interlocking member 9 moves and the pressure member 5 moves from the inactive position toward the active position.

公开(公告)号：US20220373040A1

公开(公告)日：2022-11-24

申请号：US17877977

申请日：2022-07-31

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong Chen ,  Makoto Kataoka ,  Masataka Murai

IPC: F16D13/56 ,  F16D43/12

Abstract: A power transmission device has an interlocking member 9 moving a pressure member 5 from an inactive position to an active position. A release spring (m) applies an urging force, while allowing movements of the interlocking member 9 and the pressure member 5, until drive-side clutch plates 6 and driven-side clutch plates 7 reach an engaged state before the drive-side clutch plates 6 and the driven-side clutch plates 7 are pressed against each other. A clutch spring 11 is compressed in a process where the interlocking member 9 moves after the drive-side clutch plates 6 and the driven-side clutch plates 7 have reached the engaged state. The clutch spring applying a press-contact force between the drive-side clutch plates 6 and the driven-side clutch plates 7 while allowing movements of the interlocking member 9 and the pressure member 5. The set load of the clutch spring 11 is set to be smaller than the maximum load of the release spring (m).

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：US20210354555A1

公开(公告)日：2021-11-18

申请号：US17336385

申请日：2021-06-02

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko Ozawa ,  Han Hiong CHEN ,  Makoto KATAOKA ,  Masataka MURAI

IPC: B60K17/02 ,  F16D43/12 ,  F16D13/52 ,  F16D43/206 ,  F16D47/00

Abstract: A power transmission device has a clutch member, a pressure member 5, a weight member 8, an interlocking member 9 and a bearing holding member C coupled to an activation member 10. The bearing holder member C holds a bearing B1 interposed between the activation member 10 and the pressure member 5. The bearing holding member C has a cylindrical member with one open end. An open end portion Ca is fit into and attached to a recessed portion 4d formed in a first clutch member 4a.