Seven channel ball cage type universal joint

Abstract

The invention relates to a hepta-channel ball-basket universal joint. The universal joint comprises a bell shell, a drive shaft, a cage, a plurality of steel balls, a star-shaped sleeve, a snap spring and the like. The number of steel balls is seven; the number of holes on the cage is seven; and the number of corresponding channels of the bell shell and the star-shaped sleeve are also seven. The star-shaped sleeve is arranged in the interior of the cage; the seven channels of the bell shells and the star-shaped sleeve are corresponding to the seven holes on the cage; the steel balls are arranged in the seven channels of the bell shells and the star-shaped sleeve; and the star-shaped sleeve is arranged on the drive shaft by a spline and axially oriented by a clip ring. Compared with the prior art, as the hepta-channel ball-basket universal joint is adopted, the ball-basket universal joint increases bearing capacity of the traditional ball-basket universal joint and increases rated load by 16 percent; simultaneously, the difficulty in the arrangement of eight steel balls is avoided.

Description

Technical field: [0001] The present invention relates to a center-fixed constant velocity universal joint, more specifically to a seven-channel spherical cage type universal joint capable of transmitting motion and torque when the main and driven shafts are angularly displaced. Background technique: [0002] In the prior art, the number of steel balls in the traditional structure of the ball cage type universal joint is six, and the corresponding bell-shaped shell and star-shaped sleeve grooves are both six. This six-channel ball cage type universal joint is due to The number of steel balls is six, which seems to be a small number. The internal space is not fully utilized, the bearing capacity is low, and the rated load is small. In order to improve its bearing capacity, the eight-channel ball cage universal joint came out. The number of steel balls in this eight-channel ball cage universal joint is eight, and the corresponding bell-shaped shell and star-shaped sleeve channe...

AI Technical Summary

Problems solved by technology

In order to improve its bearing capacity, the eight-channel ball cage universal joint came out. The number of steel balls in this eight-channel ball cage universal joint is eight, and the corresponding bell-shaped shell and star-shaped sleeve channel All of them are eight. This change to increase the load-bearing capacity has not achieved good results. The disadvantage is: due to the needs of space layout, only smaller steel balls can be used, which not only cannot significantly improve the load-bearing capacity, but also makes the The bell shell and the star-shaped channel beam are narrowed, which makes the parts vulnerable to damage

Another disadvantage of this structure is that the cage, the window hole is also divided into eight equal parts along the circumference, and the window hole is longer than the diameter of the steel ball, so the transverse rib of the eight equal parts of the cage is very small, and it is easy to break during work.

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