Rotary combined device

Abstract

The invention provides a rotary combined device, which is applied in the technical field of fan motors. The rotary combined device comprises a rotary shaft and a self-lubricating bearing sleeved on the rotary shaft, wherein a plurality of alternately arranged inside chutes are reserved on the self-lubricating bearing and each inside chute is obliquely extended downwards in a specified rotation direction corresponding to the rotary shaft from the top to the bottom of the chute. When the rotary shaft rotates towards the specified rotation direction, lubricating oil is guided by the inside chutes to flow downwards and accumulate; and the lubricating oil spilled from a gap on the top is effectively baffled by a concave buffer zone formed on the top of the self-lubricating bearing so as to avoid the decreasing of oil and then improve the lubricating property and prolong the service life. In addition, because the vertical distance of the inside chutes is relatively short, oil guide efficiency can be improved.

Description

technical field [0001] The invention relates to a rotary combination device, in particular to a rotary combination device for a fan motor. Background technique [0002] The existing self-lubricating bearings or oil-impregnated bearings maintain lubrication and reduce friction loss through lubricating oil. Therefore, how to prevent the loss of lubricating oil and improve the friction loss of self-lubricating bearings or oil-impregnated bearings has become a major issue. In order to prevent the bearing from losing lubricating oil, gaskets are generally provided at both ends of the bearing to prevent the internal lubricating oil from flowing out. However, such a design can only delay the outflow of internal lubricating oil, but cannot effectively prevent the outflow of lubricating oil. Therefore, it is necessary to further use other methods to prevent self-lubricating bearings from losing lubricating oil. technology disclosed. [0003] see figure 1 , which is a combined stru...

AI Technical Summary

Problems solved by technology

[0005] Although the above two designs can make the rotating shaft 12 rotate, the lubricating oil between the self-lubricating bearing 11 and the rotating shaft 12 is guided by the spiral groove 13 (or channel 14) and flows downward, but the spiral The flow path of the groove 13 (or groove 14) is quite long, which is almost equal to the overall length of the self-lubricating bearing 11. Therefore, the oil conduction path and the time spent will be long, so that the oil conduction efficiency is low

[0006] Furthermore, the top surface of the self-lubricating bearing 11 is designed to be flat. Once the lubricating oil climbs up from between the self-lubricating bearing 11 and the rotating shaft 12 and escapes from the gap, since the self-lubricating bearing 11 lacks Sealing structure, it is easy to make lubricating oil splash upwards and relatively reduce the amount of stored oil, so that the lubricating performance of the self-lubricating bearing 11 is reduced

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