公开(公告)号：US20200224732A1

公开(公告)日：2020-07-16

申请号：US16624628

申请日：2018-05-10

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Masatoshi MIYAGAWA ,  Hiromi FUJIWARA ,  Naofumi INOUE

IPC: F16D13/74 ,  F16D13/64 ,  F16D65/12 ,  F16D13/72

Abstract: Provided is a wet friction plate capable of further reducing drag torque. A wet friction plate 200 is configured to include an oil groove 203 and a friction material 210 on a flat plate annular core metal 201. The friction material 210 is formed with ride-on sides 214a, 214b and a ride-on groove 215. The ride-on sides 214a and 214b respectively extend linearly between an inner peripheral edge portion 211 formed on an inner side in a radial direction of the core metal 201 and two circumferential end portions 213a, 213b respectively extending in the radial direction at both end portions in a circumferential direction of the core metal 201. The ride-on groove 215 extends in a concave shape toward an outer side in the radial direction of the core metal 201 at a central portion of the inner peripheral edge portion 211 in the circumferential direction of the core metal 201. Further, the ride-on sides 214a and 214b are respectively formed to extend in a direction away from an imaginary oil groove center line L from the circumferential end portions 213a and 213b toward the inner peripheral edge portion 211.

公开(公告)号：US20210215205A1

公开(公告)日：2021-07-15

申请号：US17058160

申请日：2019-05-24

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Kazuya UEHARA ,  Masatoshi MIYAGAWA ,  Nobuyuki KATAYAMA

IPC: F16D13/74 ,  F16D13/72 ,  F16D13/52 ,  F16D13/64 ,  F16D69/00

Abstract: Provided are a wet friction plate and a wet multiplate clutch device including the wet friction plates capable of improving the performance for discharging lubricant oil adhering to surfaces of friction members. A wet friction plate 200 includes oil grooves 203 and friction members 210 on a flat plate annular core metal 201. At a surface of a porous layer 211 of the friction member 210, a friction slide surface 213 and lubricant oil recessed portions 214 are formed. The lubricant oil recessed portion 214 has no sharp portion in a pointed shape, such as a corner portion, and is formed with a smooth continuous surface. The multiple lubricant oil recessed portions 214 depressed in a recessed shape with respect to the friction slide surface 213 are formed. In the porous layer 211, hollow portions 212 are formed to have the same formation rate between a portion forming the friction slide surface 213 and a portion forming the lubricant oil recessed portion 214.

公开(公告)号：US20220235828A1

公开(公告)日：2022-07-28

申请号：US17722802

申请日：2022-04-18

Applicant: Kabushiki Kaisha F.C.C.

Inventor： Kazuya UEHARA ,  Masatoshi MIYAGAWA ,  Nobuyuki KATAYAMA

IPC: F16D13/74 ,  F16D13/52 ,  F16D13/64 ,  F16D13/72 ,  F16D69/00

Abstract: Provided are a wet friction plate and a wet multiplate clutch device including the wet friction plates capable of improving the performance for discharging lubricant oil adhering to surfaces of friction members. A wet friction plate includes oil grooves and friction members on a flat plate annular core metal. At a surface of a porous layer of the friction member, a friction slide surface and lubricant oil recessed portions are formed. The lubricant oil recessed portion has no sharp portion in a pointed shape, such as a corner portion, and is formed with a smooth continuous surface. The multiple lubricant oil recessed portions depressed in a recessed shape with respect to the friction slide surface are formed. In the porous layer, hollow portions are formed to have the same formation rate between a portion forming the friction slide surface and a portion forming the lubricant oil recessed portion.