Patent ID: 11965558
Assignee: NOK CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 2:
3. A sealing device disposed between an inner member and an outer member that rotate relative to each other, the sealing device acting to seal a gap between the inner member and the outer member, the sealing device comprising:
a first sealing member comprising a cylindrical mounted part adapted to be mounted to the outer member, and an annular part extending radially inward from the cylindrical mounted part toward the inner member; and
a second sealing member comprising a sleeve adapted to be mounted to the inner member, a flange extending radially outward from the sleeve and facing the annular part of the first sealing member, and a cylindrical protruding portion made from an elastic material extending along an axial direction from the flange and disposed radially inside the cylindrical mounted part of the first sealing member,
the cylindrical mounted part of the first sealing member comprising an inner peripheral surface on which multiple retaining protrusions made from an elastic material are formed circumferentially, the multiple retaining protrusions being arranged at intervals in a circumferential direction,
the cylindrical protruding portion of the second sealing member comprising an outer peripheral surface on which a circumferential groove extending continuously in a circumferential direction is formed, the multiple retaining protrusions of the first sealing member being placed within the circumferential groove,
the cylindrical protruding portion of the second sealing member comprising an end portion opposite to the flange, the end portion comprising an outer peripheral edge comprising an end protrusion protruding radially further outward than the circumferential groove, the end protrusion extending continuously in a circumferential direction, and wherein the first sealing member has an annular labyrinth lip that protrudes from the annular part toward the flange of the second sealing member and is not in contact with the flange,
the labyrinth lip being located radially inside the cylindrical protruding portion of the second sealing member,
the cylindrical protruding portion being not in contact with the annular part of the first sealing member, and wherein
an axial projecting length of the labyrinth lip from the annular part is the same as an axial projecting length of the cylindrical protruding portion from the flange.