US 11,754,128 B2
Bonding part, multiple-plate clutch device provided with said bonding part, and manufacturing method of bonding part
Akihiro Yamashita, Shizuoka (JP); Kyohei Morimoto, Shizuoka (JP); Tatsuki Hosoda, Shizuoka (JP); and Xingyu Ren, Shizuoka (JP)
Assigned to Kabushiki Kaisha F.C.C., Shizuoka (JP)
Appl. No. 17/767,207
Filed by Kabushiki Kaisha F.C.C., Hamamatsu (JP)
PCT Filed Nov. 5, 2019, PCT No. PCT/JP2019/043296
§ 371(c)(1), (2) Date Apr. 7, 2022,
PCT Pub. No. WO2021/079533, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 2019-194069 (JP), filed on Oct. 25, 2019.
Prior Publication US 2022/0349448 A1, Nov. 3, 2022
Int. Cl. F16D 13/64 (2006.01); F16D 69/04 (2006.01); B23K 26/364 (2014.01); F16D 13/52 (2006.01)
CPC F16D 13/648 (2013.01) [B23K 26/364 (2015.10); F16D 13/52 (2013.01); F16D 69/0408 (2013.01); F16D 2300/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A joint component comprising:
a metal base body having a joint surface formed as a flat surface; and
a joint object to be joined to the joint surface,
wherein the joint surface is formed in a circular or circular ring shape as viewed in plane, has a flatness of equal to or less than 0.2 mm, and is formed with many fine recessed portions formed in a recessed shape,
the fine recessed portions are formed such that adjacent ones of the fine recessed portions do not overlap with each other and a formation density per unit area smaller than an area of the joint surface is uniform, the fine recessed portions being formed to be arranged in a spiral shape along a peripheral direction of the joint surface from an inner peripheral portion of the joint surface to an outer peripheral portion of the joint surface,
the base body includes a core formed in an annular flat plate shape,
the joint object includes a friction member bonded to the joint surface along the peripheral direction,
the joint component includes friction plates arranged facing each other in a clutch device or a brake device and configured to closely contact or separate from each other to transmit or block rotary drive force between the friction plates,
the fine recessed portions are also formed at a portion of the base body other than a portion to which the joint object is joined, and
the base body includes a cover layer covering the fine recessed portions formed at the portion other than the portion to which the joint object is joined.