DRAIN PROOF BEARING ASSEMBLY

摘要

A drain proof bearing assembly includes a seat; a cylindrical bearing being receivable in a hollow space of the seat; the bearing being formed with an axial hole; an upper opening of the axial hole of the bearing being formed with an annual recess for receiving a drain proof ring; a plurality of radial notches being formed radially on an upper surface of the bearing; an outer surface of the bearing being formed with a plurality of oil guiding trenches; by the notches, the oil guiding trenches being communicated to the annular recess; and a press plate having an inner hollow penetrating hole and receivable in the hollow spate of the seat. Thereby, the fluid is prevented from draining out along the path from the spindle to the press plate. This design is effective from various kinds of bearings, such as fluid dynamic bearings, or oil bearings, etc.

主权项

1. A drain proof bearing assembly comprising:
a seat having an axially arranged hollow space; and an upper end thereof being opened; a cylindrical bearing being receivable in a hollow space of the seat; the bearing being formed with an axial hole axially penetrating therethrough for receiving a spindle; an upper side of the bearing near an upper opening of the axial hole of the bearing being formed with an annual recess for receiving a drain proof ring; a plurality of radial notches being formed radially on an upper surface of the bearing; an outer surface of the bearing being formed with a plurality of oil guiding trenches; an upper end of each oil guiding trench being communicated with one end of a respective notch and another end of the notch being communicated to the annular recess; thus, by the notches, the oil guiding trenches being communicated to the annular recess; and a press plate having an inner hollow penetrating hole and receivable in the hollow space of the seat; wherein in installation, the bearing is received into the hollow space of the seat; then, the spindle is received into the axial hole of the bearing while the annual groove of the seat is at an upper side of the bearing; then the drain proof ring is fitted into the annular recess of the bearing so as to clamp the spindle tightly in the axial hole of the bearing; and finally the press plate is located at an upper side of the bearing and is received within the hollow space of the seat.