Patent ID: 8087673
Filing Date: 2012-01-03
Classification: F16C,F16J

Abstract:
1. A sealing device comprising: a stationary side installation ring tightly fitted and fixed to a stationary side member; a rotation side installation ring tightly fitted and fixed to a rotation side member; a stationary side lip integrally provided on said stationary side installation ring and slidably brought into close contact with said rotation side installation ring by its tip end portion; rotation side lips integrally formed on said rotation side installation ring and slidably brought into close contact with said stationary side installation ring by their tip end portions; and a pulsar ring for a rotary encoder made of a synthetic resin or rubber-like elastic material, mixed with magnetic powder, integrally formed on said rotation side installation ring, and magnetized to be multipolar, wherein the rotation side installation ring is constituted by a first rotation side installation ring which is provided with the rotation side lips and is arranged at a relatively inner side, and a second rotation side installation ring which is provided with the pulsar ring and is arranged at a relatively outer side, and the second rotation side installation ring is fitted and attached to a base portion of the rotation side lips.