One-way clutch bearing

Abstract

This invention relates to one-way clutch bearings. The outer ring and the inner ring are divided into a rolling element installation section and a needle roller installation section in the axial direction. Raceways are arranged on the inner wall of the outer ring and the outer wall of the inner ring of the rolling element installation section, and several rolling elements are arranged on the outer ring and the inner ring. In the upper raceway, the rolling element cage evenly separates several rolling elements; several groups of needle roller groups are arranged between the inner wall of the outer ring and the outer wall of the inner ring of the needle roller installation section, and the needle roller cage separates several groups of needle rollers. The groups are evenly separated; each needle roller group includes the first needle roller and the second needle roller, the first needle roller and the second needle roller are installed in the holding groove on the needle roller cage, the first needle roller and the second needle roller There is a pressure angle between the center line of the two needle rollers and the contact pressure direction of the inner ring; the first needle roller is located at the radially inner end of the retaining groove, the first needle roller is in contact with the outer wall of the inner ring, and the second needle roller is located radially outward of the retaining groove end, the second needle roller is in contact with the inner wall of the outer ring. The invention has the advantages of simple and compact structure, good processability, high precision and guaranteed product quality.

Description

technical field [0001] The invention relates to a one-way clutch bearing. Background technique [0002] One-way clutch bearing is a kind of bearing, which is characterized by the function of one-way rotation and reverse stop, and is widely used in one-way clutches of washing machines, one-way clutches of automobiles and one-way clutches of electric automatic vehicles. At present, the basic principles of the one-way clutch bearings at home and abroad to realize the one-way function mainly include the following schemes: a structure such as figure 1 As shown, the raceways of the inner and outer rings of the one-way clutch bearing are circular, and the stop in the middle is a detent that forms a parabolic shape on the outside; another structure is as follows figure 2 As shown, the inner ring and rolling outer circle of the one-way clutch bearing are circular, and the raceway of the outer ring is multi-shaped; there is also a structure such as image 3 As shown, the outer diam...

AI Technical Summary

Problems solved by technology

At present, the basic principles of the one-way clutch bearings at home and abroad to realize the one-way function mainly include the following schemes: a structure such as figure 1 As shown, the raceways of the inner and outer rings of the one-way clutch bearing are circular, and the stop in the middle is a detent that forms a parabolic shape on the outside; another structure is as follows figure 2 As shown, the inner ring and rolling outer circle of the one-way clutch bearing are circular, and the raceway of the outer ring is multi-shaped; there is also a structure such as image 3 As shown, the outer diameter of the outer ring raceway and the rolling body is circular, and the inner ring raceway is made into a multi-tap shape. The principle of realizing one-way is to rely on the wedge-shaped part on the inner ring raceway to realize the stop. This strange shape The characteristics of the production process have brought great difficulties

To sum up, in the above-mentioned several structures, whether it is to set multi-slip grooves on the inner ring or outer ring, or to make the rolling elements into a parabolic shape, the processing technology is very complicated, and the precision is poor, and the product quality cannot be guaranteed.

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