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US 9,441,674 B2Granted
Ball bearing
AssigneeJtekt Corporation
InventorsAkiyuki Suzuki, Daisuke Okamoto, Hiroyuki Ohshima, Atsushi Nagai
Life of this patent
Estimating the term…
Abstract
A ball bearing includes an outer ring; an inner ring; a plurality of balls; and a cage that has an annular shape. Oil flows into an area between the outer ring and the inner ring from one side in an axial direction and flows out from the other side in the axial direction. The cage includes an annular portion provided on an oil inflow side, and bar portions extending from the annular portion toward an oil outflow side. An outer peripheral end portion of the annular portion is constituted by a corner portion at which an axial outer end face intersects with an outer peripheral surface. An axial position of a tip end of the corner portion is substantially same as an axial position of a side surface of the outer ring.
Claims14
A ball bearing comprising:
- an outer ring;
- an inner ring;
- a plurality of balls disposed between the outer ring and the inner ring;
- and
- a cage that has an annular shape, and retains the plurality of balls at intervals in a circumferential direction, wherein:
- oil flows into an area between the outer ring and the inner ring from a first side in an axial direction and flows out from a second side in the axial direction;
- the cage includes (i) an annular portion provided on an oil inflow side, and (ii) bar portions extending from the annular portion toward an oil outflow side;
- an outer peripheral end portion of the annular portion includes a corner portion at which an axial outer end face of the annular portion intersects with an outer peripheral surface of the annular portion;
- an axial position of a tip end of the corner portion is substantially same as an axial position of a side surface of the outer ring;
- the outer ring includes an annular main body and a protruding portion that is provided at a position facing the outer peripheral surface of the annular portion such that the protruding portion protrudes from the annular main body;
- a raceway surface, on which the plurality of balls roll, is provided in an inner peripheral side of the annular main body;
- an axial outer side surface of the protruding portion is located inside an axial end face of the outer ring in the axial direction;
- and
- the axial position of the tip end of the corner portion is substantially same as an axial position of the axial outer side surface of the protruding portion.
11 more elements
A ball bearing comprising:
- an outer ring;
- an inner ring;
- a plurality of balls disposed between the outer ring and the inner ring;
- and
- a cage that has an annular shape, and retains the plurality of balls at intervals in a circumferential direction, wherein:
- oil flows into an area between the outer ring and the inner ring from a first side in an axial direction and flows out from a second side in the axial direction;
- the cage includes (i) an annular portion provided on an oil inflow side, and (ii) bar portions extending from the annular portion toward an oil outflow side;
- an outer peripheral end portion of the annular portion includes a corner portion at which an axial outer end face of the annular portion intersects with an outer peripheral surface of the annular portion;
- and
- an axial position of a tip end of the corner portion is outside an axial position of a first side surface of the outer ring in the axial direction, the first side surface of the outer ring being located radially outside the tip end of the corner portion and being closest to the tip end of the corner portion relative to other side surfaces of the outer ring.
7 more elements
A ball bearing comprising:
- an outer ring;
- an inner ring;
- a plurality of balls disposed between the outer ring and the inner ring;
- and
- a cage that has an annular shape, and retains the plurality of balls at intervals in a circumferential direction, wherein:
- oil flows into an area between the outer ring and the inner ring from a first side in an axial direction and flows out from a second side in the axial direction;
- the cage includes (i) an annular portion provided on an oil inflow side, and (ii) bar portions extending from the annular portion toward an oil outflow side;
- an outer peripheral end portion of the annular portion includes a corner portion at which an axial outer end face of the annular portion intersects with an outer peripheral surface of the annular portion;
- the outer ring includes a chamfer located between a side surface of the outer ring and an inner peripheral surface of the outer ring, a starting point of the chamfer being on a side of the inner peripheral surface of the outer ring;
- and
- an axial position of a tip end of the corner portion is outside an axial position of the starting point of the chamfer of the outer ring.
8 more elements
Dependencies are inferred from the claim text.