초록 ▼

A bearing structure including a bearing housing, a thrust sleeve retained within the bearing housing, a pair of bearing sleeves received within the bearing housing on opposite sides of the thrust sleeve, and a shaft received within the thrust sleeve and bearing sleeves. The thrust sleeve is retained

A bearing structure including a bearing housing, a thrust sleeve retained within the bearing housing, a pair of bearing sleeves received within the bearing housing on opposite sides of the thrust sleeve, and a shaft received within the thrust sleeve and bearing sleeves. The thrust sleeve is retained in a manner to permit movement of the thrust bearing relative the bearing housing to correspond with movement of the bearing sleeves to maintain parallelism between the associated end bearing surfaces on the thrust sleeve and bearing sleeves. A bearing structure for receiving radial and axial thrust loads and a turbocharger employing the described bearing structures are also disclosed.

대표청구항 ▼

A bearing structure for a rotatable shaft subjected to axial thrust loads which comprises: a bearing housing defining a cylindrical bore; a thrust sleeve received within the cylindrical bore of said bearing housing and having first and second end bearing surfaces, said thrust sleeve having an outer

A bearing structure for a rotatable shaft subjected to axial thrust loads which comprises: a bearing housing defining a cylindrical bore; a thrust sleeve received within the cylindrical bore of said bearing housing and having first and second end bearing surfaces, said thrust sleeve having an outer diameter smaller than the diameter of the cylindrical bore in said bearing housing; a first bearing sleeve received within the bore of said bearing housing and having a first end bearing surface positioned adjacent the first end bearing surface of said thrust sleeve, said first bearing sleeve further having a second end bearing surface; a second bearing sleeve received within the bore of said housing and having a first end bearing surface positioned adjacent the second end bearing surface of said thrust sleeve, said second bearing sleeve further having a second end bearing surface; a shaft rotatably received within said thrust sleeve and said first and second bearing sleeves, said shaft having a diameter smaller than the inside diameter of said thrust sleeve; first thrust-transmitting means associated with said shaft for transmitting axial thrust from said shaft to the second end bearing surface of said first bearing sleeve; second thrust-transmitting means associated with said shaft for transmitting axial thrust from said shaft to the second end bearing surface of said second bearing sleeve; and retaining means for retaining said thrust sleeve within said housing to limit rotation and to limit axial displacement of said thrust sleeve, said retaining means further being for permitting movement of said thrust sleeve within said bearing housing to provide substantial parallel alignment of the first end bearing surface of said thrust sleeve with the first end bearing surface of said first bearing sleeve upon transmission of axial thrust from said first bearing sleeve to said thrust sleeve and in response to different orientations of said first bearing sleeve, said retaining means further being for permitting movement of said thrust sleeve within said bearing housing to provide substantial parallel alignment of the second end bearing surface of said thrust sleeve with the first end bearing surface of said second bearing sleeve upon transmission of axial thrust from said second bearing sleeve to said thrust sleeve and in response to different orientations of said second bearing sleeve.