Novel oil bearing motor structure

Abstract

The invention discloses a novel oil bearing motor structure which includes a shaft core fixedly mounted on a fan motor casing and a bearing installed in a fan frame. The upper end of the shaft core isfixedly connected with an annular neck, the shaft core is rotatably inserted in the bearing, and lubricating oil is injected into the position between the outer side face of the circumference of theshaft core and the inner side surface of the bearing. The novel oil bearing motor structure is characterized in that a plurality of concave pressure grooves are formed in the outer side surface of thecircumference of the shaft core, and the cross sections of the pressure grooves are gradually reduced in the rotating direction of the shaft core. According to the novel oil bearing motor structure,the grooves with the cross sections decreased gradually are arranged on a corresponding matching face of the shaft core and the bearing in the rotation direction of the shaft core, the volume of the lubricating oil flowing from the large cross section to the small cross section during rotation of the shaft core is compressed to form thrust to isolate the shaft core from the bearing, contact friction is avoided, energy saving and consumption reduction are achieved, and running is smooth.

Description

technical field [0001] The invention relates to a fan, in particular to a new structure of an oil bearing motor. Background technique [0002] Oil bearing motors often encounter the problem of contact friction between the shaft center and the bearing due to insufficient oil film strength. The common solution is to increase the strength of the oil film and reduce the contact friction by improving the precision of the parts and reducing the shaft clearance. Reduced the cost of the product and the difficulty of processing. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a new structure of an oil-impregnated bearing motor, which can isolate the shaft center from the bearing and avoid contact friction. [0004] The technical solution adopted by the present invention to solve the technical problem is: a new structure of oil-impregnated bearing motor, including the shaft center fixedly installed on the fan motor...

AI Technical Summary

Problems solved by technology

[0002] Oil bearing motors often encounter the problem of contact friction between the shaft center and the bearing due to insufficient oil film strength. The common solution is to increase the strength of the oil film and reduce the contact friction by improving the precision of the parts and reducing the shaft clearance. The cost of the product and the difficulty of processing

Images