TELESCOPIC SHAFT AND STEERING SYSTEM

摘要

A telescopic shaft includes an inner shaft, an outer shaft, a plurality of rolling bodies that are disposed between recessed grooves of the inner shaft and the outer shaft and form a line in an axial direction, a stopper, and a buffer body. The stopper restricts falling of the rolling bodies from the recessed groove of the inner shaft. The buffer body is interposed between the stopper and a rolling body at an end portion of the line. An end surface of the buffer body includes an inclined abutment portion that is inclined with respect to a plane perpendicular to an axis of the inner shaft. The abutment portion abuts against the rolling body at the end portion of the line at a stroke end of the inner shaft with respect to the outer shaft.

主权项

1. A telescopic shaft comprising:
an inner shaft where a first recessed groove that extends in an axial direction is formed in an outer peripheral surface; an outer shaft where a second recessed groove that extends in the axial direction is formed in an inner peripheral surface; a plurality of rolling bodies that are disposed between the first recessed groove and the second recessed groove, and form a line in the axial direction; a stopper that restricts falling of a rolling body at an end portion of the line from the first recessed groove at a stroke end of the inner shaft with respect to the outer shaft; and a buffer body that is interposed between the stopper and the rolling body at the end portion of the line, wherein an inclined abutment portion that is inclined with respect to a plane perpendicular to an axis of the inner shaft, and abuts against the rolling body at the end portion of the line at the stroke end is provided at an end surface of the buffer body facing the rolling body at the end portion of the line.