Bearing sealing device of electromagnetic clutch of automobile air conditioner compressor

Abstract

The invention relates to a bearing sealing device of an electromagnetic clutch of an automobile air conditioner compressor, comprising an inner bearing loop, an outer bearing loop and sealing loops at two sides of a bearing. The outside-diameter end of each sealing loop is in interference fit with a groove on the outer bearing loop; the outer side of at least one sealing loop of the bearing is provided with a rigid metal sealing ring; the inside-diameter part of the sealing ring is fixedly connected with the inner bearing loop in a sealing mode; a sealing lip opening at the inside-diameter part of each sealing loop is in sealing fit with the sealing ring; and the sealing ring is in sealing clearance fit with the outer bearing loop. Clearance sealing between the sealing ring and the outer bearing loop prevents slurry from entering the bearing so as to protect the sealing lip opening at the inside-diameter part of the sealing loop. The sealing ring made of metal material can be slightly abraded, and a sealing labyrinth among the sealing ring, the sealing loops, the inner bearing loop and the outer bearing loop enhances the sealing performance. The bearing with provided with the sealing ring at one side is installed to well prevent the slurry from intruding into the bearing, and the sealing loop at the other side of the bearing has good sealing effect under the common action of three sealing lips and two sealing grooves.

Description

technical field [0001] The invention belongs to a bearing sealing device, in particular to a bearing sealing device for an electromagnetic clutch bearing of an automobile air-conditioning compressor. Background technique [0002] The existing automobile air-conditioning compressor electromagnetic clutch bearing utilizes the sealing rings on both sides to realize sealing. The outer diameter of the sealing ring is embedded on the rotating bearing outer ring, and the sealing lip at the inner diameter of the sealing ring is in sealing contact with the fixed bearing inner ring to prevent leakage of lubricating materials inside the bearing and prevent the intrusion of external dust and water. The working environment of electromagnetic clutch bearings for automotive air-conditioning compressors is relatively harsh, especially for small-displacement cars, most of which have transverse engines, and the air-conditioning compressor is installed close to the front wheels of the car. Th...

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the technical problem that the existing automobile air-conditioning compressor electromagnetic clutch bearing seal has poor resistance to mud impact, and the sealing lip at the inner diameter of the sealing ring is easily worn by the mud accumulated on the inner ring of the bearing, and provides a method that can overcome or reduce the mud impact. The electromagnetic clutch bearing sealing device of the automobile air-conditioning compressor that enters the position of the sealing lip at the inner diameter of the sealing ring

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