Boot for constant velocity universal joint

Abstract

A boot for a constant velocity universal joint can be appropriately fitted on an outer joint member of the joint and has enhanced durability. A shoulder (5) and a root (13) of the boot (1) have a circular arc section (14) and a rectilinear section (15). The circular arc section (14) is located adjacent a large-diameter section (2) and has an axial cross-sectional shape projecting radially outward. The rectilinear section (15) is located adjacent the circular arc section (14) and has an axial cross-sectional shape which is rectilinear. The inner peripheral surface (16) of the rectilinear section (15) is made to contact with an opening end (17) of the outer joint member (7) of the constant velocity universal joint (6). The thickness of the boot (1) from the circular arc section (14) to the rectilinear section (15) is uniform.

Description

technical field [0001] The present invention relates to a shroud installed, for example, on a constant velocity universal joint in a power transmission mechanism of an automobile. Background technique [0002] As is well known, a constant velocity universal joint incorporated in a power transmission mechanism of an automobile, for example, is equipped with a guard to prevent foreign matter such as dust from entering the joint and to prevent grease sealed inside the joint from leaking. [0003] Such shields, such as Figure 4 shown. The shroud 31 has a large-diameter portion 32 , a small-diameter portion 33 , a meander portion 34 , and a shoulder portion 35 as main constituent elements. On the other hand, the constant velocity universal joint 36 has an outer joint member 37, an inner joint member (not shown), and a torque transmission member (not shown) interposed between the outer joint member 37 and the inner joint member to transmit torque. shown) as the main components....

AI Technical Summary

Problems solved by technology

The uneven thickness and shape of such a shoulder, the impact of foreign objects (such as small stones, etc.) from the outside, and the change of the cover caused by the operation of the constant velocity universal joint will cause stress concentration, and there will be a decrease in durability. possibility of

Images