High-oil-storage-capacity uniform-penetration type long-service-life cooling fan

Abstract

The invention provides a high-oil-storage-capacity uniform-penetration type long-service-life cooling fan. The high-oil-storage-capacity uniform-penetration type long-service-life cooling fan comprises a fixed seat, a fan blade and a stator, a shaft sleeve is arranged in the center of the fixed seat, an inserting hole is formed in the center of the stator, the shaft sleeve is inserted into the insertion hole, and the stator is sleeved outside the shaft sleeve; a sintering copper bearing is arranged in the shaft sleeve, a rotating shaft is connected to the center of the bottom surface of the fan blade, and the rotating shaft is inserted into the sintering copper bearing to enable the fan blades to be mounted on the fixed base; at least one oil storage groove are formed in the outer wall ofthe upper part of the sintering copper bearing, upper notches are formed in the oil storage grooves, and the upper notches extends to the upper surface of the sintering copper bearing; a pressing plate which protrudes inwards is arranged on the inner wall of the inserting hole, the lower surface of the pressing plate presses the upper edge of the shaft sleeve and abuts against the upper surface ofthe sintering copper bearing, and the upper notches are sealed. According to the high-oil-storage-capacity uniform-penetration type long-service-life cooling fan, the oil storage tank can achieve anoil storage function; a plurality of through holes are formed in the sintering copper bearing, lubricating oil in the oil storage tank can penetrate into the sintering copper bearing through the through holes, and then evenly permeates into a gap between the rotating shaft and the bearing.

Description

Technical field [0001] The present invention relates to the technical field of cooling fans, in particular to a long-life cooling fan with high oil storage capacity and even penetration. Background technique [0002] Axial-flow cooling fans usually include a fixed seat and a fan blade. The center of the fixed seat is provided with a shaft sleeve, a bearing is provided in the shaft sleeve, and the fan blade is connected with a rotating shaft. The rotating shaft is inserted in the bearing so that the fan blade is installed on the fixed seat. [0003] In order to reduce the friction between the shaft and the bearing, lubricating oil is usually added between the two. If too much lubricating oil is added, it will cause oil rejection problems. If less lubricating oil is added, it is easy to produce abnormal sound problems and affect product life. [0004] At the same time, the existing lubricating oil circuit is mainly composed of the gap between the shaft and the bearing, and the gap be...

AI Technical Summary

Problems solved by technology

If too much lubricating oil is added, it will cause oil throwing problems

If less lubricating oil is added, it is easy to produce abnormal sound and affect the life of the product

[0004] At the same time, the existing lubricating oil circuit is mainly composed of the gap between the shaft and the bearing, and the distance between these gaps will be affected by factors such as the processing accuracy of the cooling fan, installation angle, and operating temperature, so it is difficult to ensure the gap between the gaps. Uniformity of pitch size

When the lubricating oil flows in the oil passages with different pitches, it will sometimes gather and sometimes dry up, which will affect the stability of the cooling fan

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