Holder-free one-way bearing

Abstract

The invention discloses a holder-free one-way bearing which comprises a bearing outer ring, elastic frames, check rings, a rolling body and a bearing inner ring. The bearing outer ring and the bearinginner ring are concentrically disposed. A plurality of wedge blocks are disposed on the inner wall of the bearing outer ring and are matched with the rolling body. The plurality of elastic frames aredisposed between the bearing outer ring and the bearing inner ring. Each elastic frame comprises a baffle, a first elastic plate and a second elastic plate, wherein elastic blocks are disposed at thetwo ends of the baffle, the lower end of the baffle is connected with one end of the first elastic plate through the corresponding elastic block, the other end of the first elastic plate is connectedwith the second elastic plate, and the second elastic plate is matched with the rolling body. The check rings are disposed at the two ends of the bearing outer ring and are provided with through grooves. The elastic blocks are matched with the through grooves to limit the positions and angles of the elastic frames. The holder-free one-way bearing has the advantages that the elastic plates make contact with the rolling body, surface contact is converted into linear contact, and the service life of the bearing is prolonged; due to the detachable elastic frames, the assembling difficulty of therolling body is lowered; and due to the combination of the small-gradient wedge blocks and the elastic frames, it is ensured that the bearing continues rotating when reaching the life limit, so that sufficient maintenance time is provided for a machine.

Description

technical field [0001] The invention relates to the field of bearings, in particular to a one-way bearing without a cage. Background technique [0002] One-way bearings, also called overrunning clutches, are bearings that can rotate freely in one direction and lock in the other direction. The one-way bearing in the prior art is mainly composed of a metal shell, and its interior contains many rollers, needle rollers or balls. The shape of the cage is a cage with multiple windows, and each window is provided with a rolling body and a spring. It is guaranteed that the rolling elements can only roll along the direction of the cage within the window of the cage, and there will be great resistance in the other direction. The one-way bearings in the prior art, especially the miniature one-way bearings, are limited by the overall size. In order to fix the spring and guide the rolling elements, a plastic cage with a multi-window cage structure is provided. This type The advanced ca...

AI Technical Summary

Problems solved by technology

The one-way bearings in the prior art, especially the miniature one-way bearings, are limited by the overall size. In order to fix the spring and guide the rolling elements, a plastic cage with a multi-window cage structure is provided. This type The cage structure is complex, difficult to manufacture, low in strength, and not resistant to high and low temperatures

During assembly, the rolling body and the rolling seat are relatively compactly assembled, which makes the assembly process more difficult and requires a lot of manual assembly, which is not conducive to automatic machine assembly. At the same time, the spring on the rolling seat is easily deformed under stress. When the rolling body is worn , the plastic cage is easily damaged by the impact of rolling elements, causing one-way bearings to lock up or two-way slipping, losing one-way action, and causing serious mechanical accidents; when one-way bearings work in a slipping state for a long time, the rolling elements and one-way The high temperature generated by the friction between the inner and outer rings of the bearing will melt the plastic cage, which will also cause the failure of the one-way bearing and cause serious mechanical accidents

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