Patent ID: 11927208
Assignee: TOYOTA BOSHOKU KABUSHIKI KAISHA
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B  Y | IPC F

Claim 0:
1. A method for manufacturing a rotational coupler, the rotational coupler comprising:
a plate-shaped first member comprising:
a disk-shaped first plate; and
a first flange extending from an outer rim of the first plate in a direction orthogonal to the first plate;

a plate-shaped second member comprising:
a disk-shaped second plate facing the first plate across a space; and
a second flange extending from an entirety of an outer rim of the second plate toward the first plate;

a tapered portion provided in a boundary area, positioned between the second flange and the second plate, on one side of the boundary area opposite to the space, the tapered portion being inclined toward the first plate along a radially outward direction; and
an outer circumferential ring configured to restrict the second plate from moving away from the first plate, the outer circumferential ring comprising:
an annular ring body;
a first ring flange extending radially inward from the ring body; and
a second ring flange extending radially inward from the ring body,

wherein the first ring flange is configured to externally come into contact with the first member, and
wherein the second ring flange comprises a bent portion that is bent to protrude toward the first plate, the bent portion being provided in a middle part of the second ring flange in an extending direction, and
the method comprising:
attaching a before-swaging ring to the first member and the second member that are in contact with each other, the before-swaging ring corresponding to the outer circumferential ring in which the first ring flange and the bent portion have been unformed;
forming the first ring flange by plastic forming of the before-swaging ring attached; and
forming the bent portion by pressing a tip of the second ring flange in which the bent portion has been unformed against the tapered portion with a metallic press die so as to plastically deform the second ring flange.