Non-quill roller cross universal joint cross trunnion

Abstract

The present invention is one kind of centerpiece gimbal with improved structure and thus simple manufacture, light running and less noise and suitable for high speed and light load running. Between the outer ring and the centerpiece head, homogeneous circular soft wear resisting layer is formed through coating nylon material onto the inner wall and the bottom of the centerpiece outer ring. In case that there is inclined annular overtravel slot between the inner wall and the bottom, the overtravel slot is coated with soft wear resisting layer. Annular slot in the root part of the centerpiece head is filled with the soft wear resisting layer. The present invention has the features of simple structure, easy manufacture, compact structure, low running noise, etc. and is especially suitable for high speed and low load centerpiece gimbal.

Description

technical field [0001] The invention relates to a structural improvement of a cross-axis universal joint, in particular to a needle-free cross-axis universal joint with compact structure, convenient processing and assembly, and enhanced performance. Background technique [0002] In the existing cross shaft universal joint, the structure between the end of the shaft head and the outer casing is relatively complicated, and the gap between the two is large, which leads to a less compact structure and affects the overall structural strength. Moreover, the production, processing and assembly of the needle rollers are relatively complicated, and they are easy to wear and tear, and the running noise is relatively large. For example, someone has applied for a patent for a universal joint (application number is: 87103541), a kind of universal joint, which uses a grease nozzle to centrally fill lubricant to ensure that all four rolling bearing positions can be evenly lubricated for a ...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the complex structure caused by the direct use of needle rollers between the shaft head and the outer casing of the cross shaft universal joint in the prior art, and there must be a gap equal to or greater than the diameter of the needle rollers gap, leading to technical problems such as less compact structure, which directly leads to the undersized diameter of the shaft head of the cross shaft universal joint or the larger diameter of the jacket of the cross shaft universal joint, which affects the overall structural strength, etc.

[0005] The invention also solves the technical problem that the conventional universal joints in the prior art are prone to oil leakage, which leads to premature failure of the universal joints

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