Tapered roller bearing

Patent metadata

Field	Value
Publication number	US-10364845-B2
Application number	US-201715842351-A
Country	US
Kind code	B2
Filing date	Dec 14, 2017
Priority date	Dec 22, 2016
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A tapered roller bearing includes an outer ring having a first raceway surface, an inner ring having a second raceway surface, plural tapered rollers disposed between the first and second raceway surfaces, and a lubricating oil holding member fixed to an end portion of the outer ring. The lubricating oil holding member includes a tubular portion, an annular portion, and a projecting portion. The tubular portion is formed in the shape of a cylinder, and fixed to an end portion of the outer ring. The annular portion is formed in the shape of a circular ring. An end portion of the annular portion on the outer side is connected to an end portion of the tubular portion on one side. The projecting portion projects radially inward from the inner peripheral surface of the annular portion in the radial direction.

First claim

What is claimed is:

1. A tapered roller bearing comprising:
an outer ring that has a first raceway surface on an inner peripheral surface of the outer ring;
an inner ring that has a second raceway surface on an outer peripheral surface of the inner ring and that is disposed coaxially with the outer ring;
a plurality of tapered rollers disposed in a space between the first raceway surface and the second raceway surface; and
a lubricating oil holding member fixed to an end portion of the outer ring on one side in an axial direction, wherein
the lubricating oil holding member includes
a tubular portion formed in a shape of a cylinder that extends in the axial direction, and fixed to an end portion of the outer ring on one side in the axial direction, of two end portions of the outer ring in the axial direction,
an annular portion formed in a shape of a circular ring that extends in a radial direction, an end portion of the annular portion on an outer side in the radial direction being connected to an end portion of the tubular portion on one side in the axial direction, and
a projecting portion that projects radially inward from an inner peripheral surface of the annular portion in the radial direction.

2. The tapered roller bearing according to claim 1 , wherein
a distal end of the projecting portion is positioned on the other side in the axial direction with respect to the end portion of the tubular portion on one side in the axial direction.

3. The tapered roller bearing according to claim 1 , wherein:
a plurality of projecting portions is formed on the inner peripheral surface of the annular portion in the radial direction; and
the plurality of projecting portions is disposed at equal intervals in a circumferential direction on the inner peripheral surface of the annular portion in the radial direction.

4. The tapered roller bearing according to claim 3 , wherein
a number of the projecting portions which are formed on the inner peripheral surface of the annular portion in the radial direction is a divisor of a number of the tapered rollers.

5. The tapered roller bearing according to claim 1 , wherein
the projecting portion includes a first inclined surface disposed on an inner peripheral surface of the projecting portion, an end portion of the first inclined surface on one side in the axial direction is continuous with an end face of the annular portion on one side in the axial direction, and a distance from a center axis to the first inclined surface becomes larger from the other side in the axial direction toward one side in the axial direction.

6. The tapered roller bearing according to claim 5 , wherein:
the first inclined surface includes
a first surface, an end portion of which on one side in the axial direction is continuous with the end face of the annular portion on one side in the axial direction, and
a second surface, an end portion of which on one side in the axial direction is continuous with an end portion of the first surface on the other side in the axial direction; and

an angle formed between the second surface and a plane that is perpendicular to the center axis is larger than an angle formed between the first surface and the plane which is perpendicular to the center axis.

Assignees

• Jtekt Corp

Inventors

• Shiina Ryo
• Suzuki Akiyuki

Classifications

• F16C33/6655

  in a reservoir in the sealing means · CPC title

• F16C19/364 Primary

  with tapered rollers, i.e. rollers having essentially the shape of a truncated cone · CPC title

• F16C33/585 Primary

  of raceways, e.g. ribs to guide the rollers · CPC title

• F16C33/583

  Details of specific parts of races · CPC title

• F16C33/6651

  in recesses or cavities provided in retainers, races or rolling elements · CPC title