公开(公告)号：US20230138425A1

公开(公告)日：2023-05-04

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 ,  F16D43/30 ,  F16D43/12

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：US20230135364A1

公开(公告)日：2023-05-04

申请号：US17918394

申请日：2020-09-14

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Katsu YOSHIMOTO ,  Masayuki NONAKA ,  Yoshihiko OZAWA ,  Han Hiong CHEN

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

Abstract: In a power transmission apparatus, an auxiliary clutch plate different in diameter from driving and driven clutch plates located in a clutch housing. When the driving and driven clutch plates are pressed against each other, the auxiliary clutch plate is pressed to enable transmission of a driving force of an engine to a driving wheel. When a pressing force exerted on the driving and driven clutch plates is released, a pressing force exerted on the auxiliary clutch plate is released to cut off transmission of the driving force of the engine to the driving wheel.

公开(公告)号：US20210033154A1

公开(公告)日：2021-02-04

申请号：US16966699

申请日：2019-02-27

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Kenichiro ISOBE ,  Kenichiro TAKAHASHI ,  Katsu YOSHIMOTO

IPC: F16D13/54 ,  F16D13/64 ,  F16D13/70

Abstract: Provided is a clutch device configured so that close contactability between a cam surface of a center clutch and a cam surface of a pressure clutch can be improved and torque transmission can be stabilized accordingly. The clutch device (100) includes a center clutch (105) and a pressure clutch (112). The center clutch (105) includes center-side cam portions (107), a pressure clutch slide portion (106), and a lifter plate slide portion (110). The pressure clutch (112) includes pressure-side cam portions (114), a lifter plate (116), and a second center clutch slide portion (113). The lifter plate (116) includes first center clutch slide portions (120). A clearance (C2) between the second center clutch slide portion (113) and the pressure clutch slide portion (106) is set greater than a clearance (C1) between the first center clutch slide portion (120) and the lifter plate slide portion (110).

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：US20240344570A1

公开(公告)日：2024-10-17

申请号：US18751443

申请日：2024-06-24

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko OZAWA ,  Han Hiong CHEN ,  Katsu YOSHIMOTO

IPC: F16D43/10 ,  B60K17/02 ,  F16D13/52 ,  F16D13/54 ,  F16D43/12 ,  F16D43/30 ,  F16D47/00

CPC classification number: F16D43/10 ,  B60K17/02 ,  F16D13/54 ,  F16D43/12 ,  F16D43/30 ,  F16D47/00 ,  F16D13/52

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：US20220341474A1

公开(公告)日：2022-10-27

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

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：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：US20230213071A1

公开(公告)日：2023-07-06

申请号：US18076451

申请日：2022-12-07

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：US20230145318A1

公开(公告)日：2023-05-11

申请号：US17918404

申请日：2020-09-14

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko OZAWA ,  Han Hiong CHEN ,  Katsu YOSHIMOTO

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

CPC classification number: F16D43/12 ,  F16D13/52 ,  F16D47/00 ,  B60K17/02 ,  F16D2300/10 ,  F16D2300/12

Abstract: In a power transmission apparatus, a centrifugal clutch includes a holder, a press, and springs to urge masses from a radially outer position to a radially inner position. The masses are each housed in an associated one of housing portions arranged in a circumferential direction of the holder such that the masses are radially movable. More than one spring is provided in the circumferential direction between an inner peripheral wall surface of each of the housing portions and an associated one of the masses to urge the associated mass from the radially outer position to the radially inner position.

公开(公告)号：US20230144189A1

公开(公告)日：2023-05-11

申请号：US17918398

申请日：2020-09-14

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko OZAWA ,  Han Hiong CHEN ,  Katsu YOSHIMOTO

IPC: F16D13/52 ,  F16D43/12 ,  F16D43/21

CPC classification number: F16D13/52 ,  F16D43/12 ,  F16D43/216

Abstract: In a power transmission apparatus, a centrifugal clutch includes a holder, a press, a first spherical 14bodv that is partially protruded from a first opening and in contact with a rolling contact surface of the press so as to be rollable thereon, and a second spherical body that is partially protruded from a second opening and in contact with a rolling contact surface of the holder so as to be rollable thereon. A through hole has a tapered shape from the first opening to the second opening. Disconnection of the first spherical body is prevented by an outer peripheral edge of one of the first opening and the second opening that has a smaller diameter.