Steering column and steering device
AssigneeNsk Ltd.
InventorsSuguru Sugishita, Masaru Oosawa
Life of this patent
Estimating the term…
Abstract
The outer column 25 has a front-side small-diameter tubular portion 37 into which the inner column 24 is press fitted. The inner-circumferential surface of the front-side small-diameter tubular portion 37 and the outer-circumferential surface of the inner column 24 come in contact with an interference fit at only a plurality of contact locations separated in the circumferential direction. At least one location in the axial direction of the column-side bracket 26 is welded to the outer-circumferential surface of the front-side small-diameter tubular portion 37 at only two weld locations that are close in the circumferential direction.
Claims11
A steering column comprising:
- a tubular outer column;
- a tubular inner column internally fitted and supported inside the outer column;
- and
- a column-side bracket fixed by welding to an outer-circumferential surface of the outer column;
- the outer column having a press-fitted portion into which the inner column is press-fitted to an inner-diameter side;
- and
- an inner-circumferential surface of the press-fitted portion and an outer-circumferential surface of the inner column coming in contact with each other with an interference fit directly or via another member only at a plurality of contact locations separated in a circumferential direction;
- wherein
- the column-side bracket includes:
- a connecting plate portion,
- a pair of side plate portions bent in a vertical direction from both end portions in a width direction of the connecting plate portion and sandwiching the outer column from both sides in the width direction, and
- two pair of fixing plate portions respectively bent toward the inside in the width direction from a front-end portion and a rear-end portion in a front-rear direction of the pair of side plate portions, and
- of the column side bracket, only the two pair of fixing plate portions are welded to the outer circumferential surface of the outer column,
- of the two pair of fixing plate portions, tip edge portions of at least one pair of fixing plate portions are close to each other in the width direction, and tip end portions of the at least one pair of fixing plate portions are welded to the outer-circumferential surface of the press-fitted portion at only two weld locations that are close in the circumferential direction, and
- the two weld locations exist within a circumferential range located between two contact locations adjacent in the circumferential direction among the plurality of contact locations at positions separated in the circumferential direction from the two contact locations.
Dependencies are inferred from the claim text.