Ball bearing

Abstract

The invention discloses a ball bearing. The ball bearing comprises an inner ring, an outer ring and a plurality of rolling pieces, wherein the inner ring and the outer ring are coaxially arranged, and the plurality of rolling pieces are annularly arranged between the inner ring and the outer ring; the inner ring is composed of an inner ring core and an inner ring cover, the end faces of the inner ring core and the inner ring cover are in butt joint, and the inner ring core and the inner ring cover are coaxially connected into a whole in an inserted and embedded mode; after the inner ring core and the inner ring cover are in butt joint, an outer groove is formed in the outer circumferential face of the inner ring, and an inner groove is formed in the inner circumferential face of the outer ring; the rolling pieces are arranged between the inner groove and the outer groove; and a riveting edge used for axially fixing the inner ring core and the inner ring cover is arranged on the inner ring core. The ball bearing further comprises a reinforcing structure used for fixing the inner ring, so that the connecting strength of the inner ring core and the inner ring cover can be enhanced. According to the ball bearing, by adding the reinforcing structure, the tensile strength of the inner ring of the bearing is effectively improved, and the bearing performance is improved. The ball bearing can be widely applied to electronic products, such as mobile phones, wearable electronic products and the like, provides reliable technical support for the miniaturization trend of the electronic products, and achieves a good effect on the balance of performance and cost.

Description

technical field [0001] The invention relates to a bearing, in particular to a ball bearing. Background technique [0002] As we all know, watches are representatives of micro-mechanical devices. Such as figure 1 As shown, there is such a kind of bearing in the watch movement, which divides the inner ring of the traditional structure bearing, such as deep groove ball bearing, into two parts, namely the "inner ring core" and "inner ring cover"; The rolling element changes the rolling track from a circular arc shape to a V shape. This type of bearing is widely used in watch movements. [0003] Due to the small size of the ball bearing product, especially the small axial height; compared with the traditional structure of the bearing, this structure is convenient for the processing of parts and bearing assembly. Therefore, it is widely used in watch movements and has a history of hundreds of years. [0004] In the watch movement, due to the functional structure of the movemen...

AI Technical Summary

Problems solved by technology

[0005] However, if the above-mentioned bearings are extracted separately and applied to current technological products, the bearing structure will bear the axial tensile force, causing the two parts of the inner ring to loosen, causing the bearing to disintegrate and reducing the reliability of the bearing.

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