Patent ID: 7626296

Claim:
A bearing unit, comprising: a radial bearing configured to support a shaft in a circumferential direction; a thrust bearing configured to support one end of the shaft in a thrust direction; a path forming member provided on the outer side of said radial bearing and said thrust bearing; a housing formed so as to accommodate said path forming member in a closed up state and having a shaft fitting hole in which said shaft is fitted; viscous fluid filled in said housing; and a communicating path which communicates a first end side and a second end side of the shaft in the thrust direction which projects from said radial bearing formed between said path forming member and said radial bearing; said communicating path having an axial path formed in the axis direction on a circumferential face of said radial bearing and a second end side path formed on the second end side face of said radial bearing, wherein said second end side path is formed by a plurality of projections formed on one of the second end side face of said radial bearing and a face of said housing opposing to the second end side face of said radial bearing, and the cross section of said second end side path has a cross sectional area greater than that of the cross section of said axial path.