Novel sealing structure for transmission shaft protective sleeve

Abstract

The invention provides a novel sealing structure for a transmission shaft protective sleeve. The novel sealing structure for the transmission shaft protective sleeve comprises the transmission shaft protective sleeve. A sealing ring is arranged at the position away from the outlet of the transmission shaft protective sleeve, and a 4 mm to 6 mm wide pressing locating surface is arranged at the position, away from the outlet, on the outer edge of the sealing ring. The surface roughness value of the sealing ring is smaller than or equal to 3.2, and a first lip and a second lip are arranged in the sealing ring towards the center of the circle. The included angle between the first lip and the axial direction of the outer circle of the novel sealing structure and the included angle between the second lip and the axial direction of the outer circle of the novel sealing structure is smaller than or equal to 45 degrees. The first lip and the second lip are in interference fit with the inner shaft of the novel sealing structure. Due to the fact that the novel sealing structure for the transmission shaft protective sleeve is provided with the 4 mm to 6 mm wide pressing locating surface, the pressing and welding locating surface is additionally arranged between a protective sleeve assembly and a spline shaft fork, the problem that water flows into a spline pair during painting of a transmission shaft is solved, and the corrosion phenomenon, caused by water inflow, of the spline pair is eradicated completely. The novel sealing structure for the transmission shaft protective sleeve is simple, economical and practical, and is used in cooperation with the transmission shaft, water is prevented from flowing in the transmission shaft, and the lip arrangement and using of the sealing ring can be facilitated.

Description

technical field [0001] The invention relates to auto parts, in particular to a novel transmission shaft sheath sealing structure. Background technique [0002] The transmission shaft sheath is now produced with an oil seal assembly, which has a gap fit with the outer circle of the spline sleeve, and the sealing effect is poor. There is water ingress into the spline pair during the painting process, and it is difficult to ensure the coaxiality with the spline sleeve after welding. , There is eccentric wear of the oil seal and even the phenomenon that the transmission shaft cannot slide freely. Contents of the invention [0003] In order to solve the problem of water ingress into the spline pair during the painting process of the drive shaft and the out-of-tolerance coaxiality of the sheath assembly after welding, the invention proposes a new seal structure for the drive shaft sheath. [0004] For this reason, the technical solution of the present invention is that the nove...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of water ingress into the spline pair of the transmission shaft during the painting process and the coaxiality of the sheath assembly after welding, the oil seal is eccentrically worn and the transmission shaft is difficult to slide, and the invention proposes a new type of transmission shaft sheath sealing structure

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