Needle bearing holder structure for engine

Abstract

The invention discloses a motor used needle bearing cage structure which comprises two parallelly arranged outer rings (1) and beams (9) connecting the two outer rings (1); wherein the beams are uniformly distributed circumferentially; a through groove (3) is opened along the width direction on the top surface of the beam (2); two lateral walls of the through groove (3) are respectively close to inner end surfaces of the two outer rings (1). By slightly modifying the beam, the structure can effectively prevent the needle bearing cage from wearing and deforming and greatly improve the service performance of a crank-connecting rod and an entire motor. The structure is characterized by ingenious design, simple structure, easy implementation, etc.

Description

technical field The invention relates to a bearing component, in particular to a needle roller bearing cage structure for an engine. Background technique The crankpin of the engine crank and the big end of the connecting rod are generally connected by a needle bearing. Under the action of the needle roller embedded in the needle bearing cage, the connecting rod and the crank can rotate relatively, so that the connecting rod will act on the piston. The force is transmitted to the crank, so that the reciprocating linear motion of the piston is converted into the rotary motion of the crank. The commonly used needle roller bearing cage is composed of two outer rings arranged in parallel and several beams located between the two outer rings. The beams are evenly distributed on the circumference. The top surface of the beam is on the same circumference as the outer peripheral surface of the outer ring. It is found in practice that after the engine has been running for a period o...

AI Technical Summary

Problems solved by technology

Because the thickness of the beam is smaller than that of the outer ring, the force is weaker, so the longer the engine is used, the degree of wear of the beam will increase, and finally lead to deformation of the beam, which not only affects the performance of the engine, but also easily causes the needle roller to be stuck. , crank connecting rod lock, etc., which will cause the engine to be scrapped

Images