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.

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：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.

公开(公告)号：US20230136770A1

公开(公告)日：2023-05-04

申请号：US17918401

申请日：2020-09-14

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Yoshihiko OZAWA ,  Han Hiong CHEN ,  Katsu YOSHIMOTO

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

Abstract: A power transmission apparatus a centrifugal clutch including a holder and a press. The holder and the press are each circumferentially provided with protrusions fitted and attached to cut-outs of a clutch housing. The holder is an integrated assembly into which a mass that is being held is integrated. The integrated assembly and the press are non-connected separate components and are independently movable toward or away from each other.

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：US20220364612A1

公开(公告)日：2022-11-17

申请号：US17877988

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：US20190226532A1

公开(公告)日：2019-07-25

申请号：US16368988

申请日：2019-03-29

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Makoto KATAOKA ,  Han Hiong CHEN ,  Kaoru AONO

IPC: F16D23/12 ,  F16D13/52 ,  F16D7/02 ,  F16D13/02 ,  F16D43/21

Abstract: A power transmitting apparatus has a clutch member and a pressure member. The cam surfaces of the pressure-contact assist cam face each other. The cam surfaces of the back torque limiter cam face each other. A receiving portion for a clutch spring (10) on the pressure member (5) side has a receiving member (11) separate from the pressure member (5). A first cam surface (C1) and a second cam surface (C2), constituting the back torque limiter cam, are, respectively, formed on the receiving member (11) and the clutch member (4). A third cam surface (C3) and a fourth cam surface (C4), constituting the pressure-contact assist cam, are, respectively, formed on the pressure member (5) and the clutch member (4).