Anti-leakage device for an oily bearing

1. Field of the Invention

The present invention is related to an anti-leakage device for an oily bearing and particularly to an anti-leakage device with which lubrication oil of the bearing is prevented from leaking outward for prolonging life span of a fan.

2. Brief Description of the Related Art

The conventional anti-leakage device for an oily bearing as shown in FIG. 1 has a main member 1 integrally with a locating base 11. The locating base 11 has a hollow axial barrel 111 with a bearing 12 inside. The axial barrel 111 is surrounded with a coil 13. A fan wheel 14 provides blades at the outer circumferential side thereof and a magnetic ring 142 at the inner circumferential side thereof. The magnetic ring 142 is disposed corresponding to the coil 13. A spindle 143 extends from the inner side of the fan wheel to pass through the bearing 12 and is held with a retaining ring 15 and an oil ring 16.

The problem of the preceding prior while in use is in that although the bearing 12 releases lubrication oil via a sintered hole for lubricating the spindle 143 during rotating with high speed to avoid damage caused by dry friction, the oil ring 16 on the spindle 143 is insufficient to stop the lubrication oil leaking outward from the upper end of the barrel 111. Due to the lubrication oil leaking outward via the clearance between the axial barrel and the spindle 143 along with centrifugal force of the running spindle 143, it results in the lubrication oil is exhausted. Hence, excessive wear of the spindle 143 occurs such that it creates noise and lowers life span of the fan.

In order to overcome the deficiencies of the preceding prior art, an object of the present invention is to provide an anti-leakage device for an oily bearing with which lubrication oil can be stored without leaking outward.

Another object of the present invention is to provide an anti-leakage device for an oily bearing in which an oil removing disk is attached to the fan wheel to guide the lubrication oil at the fan wheel to the upper end of the bearing instead of stopping the lubrication oil moving outward.

A further object of the present invention is to provide an anti-leakage device for an oily bearing in which the axial barrel is higher than the bearing to prevent the lubrication oil from leaking outward along the upper end of the bearing.

A further object of the present invention is to provide an anti-leakage device for an oily bearing in which the axial barrel is higher than the bottom side of the oil removing disk for part of the lubrication oil at the oil removing disk being forced to splash to the inner wall surface of the axial barrel and flowing back to the bearing.

Accordingly, an anti-leakage device for an oily bearing according to the present invention includes a base, a wearing piece, a fastener, a bearing, a spindle and a fan wheel. The base provides an axial barrel. The wearing piece, the fastener, the bearing and the spindle are received in the axial barrel. An oil removing disk is attached to an inner side of the fan wheel and provides a conical shell with a conical hole being enclosed with the conical shell such that the oil removing disk is capable of collecting lubrication oil with centrifugal force and the lubrication oil collected by the oil removing disk passes through the conical hole to allow the lubrication oil flowing outward the oil removing disk being forced to move back to the axial barrel.