Patent ID: 11906049
Assignee: NOK CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. A sealing device configured to seal a gap between an annular outer periphery side member and an annular inner periphery side member, the outer periphery side member and the inner periphery side member being rotatable relative to each other with respect to a longitudinally extending axis, the sealing device comprising:
a sealing device main body to be attached to the outer periphery side member; and
a slinger to be attached to the inner periphery side member,
wherein the sealing device main body is centered on the longitudinally extending axis and includes an annular reinforcement ring and an annular elastic body that is attached to the annular reinforcement ring,
the annular reinforcement ring has a first leg that is attached to the outer periphery side member and extends in a radial direction toward the inner periphery side member and the longitudinally extending axis, a second leg that is attached to the first leg and extends in an axial direction in parallel with the longitudinally extending axis, and a third leg that is attached to the second leg and extends in the radial direction toward the inner periphery side member and the longitudinally extending axis,
a through hole is formed in the third leg that extends in the axial direction,
the elastic body has an internal space side surface and an atmosphere side surface, and a material of the elastic body formed in the through hole connects the internal space side surface and the atmosphere side surface,
a first positioning part and a second positioning part that are each in the form of a groove for fixing a position of the reinforcement ring at a time of vulcanization are formed on the internal space side surface of the elastic body,
the through hole and the first and second positioning parts are formed at positions separated in the radial direction, and
the first positioning part is radially separated from the through hole at a greater distance in comparison to the second positioning part.