Back to results
US 10,823,236 B2Granted
Ball bearing, clutch thrust bearing device including such a bearing, and driveline system including such a device
AssigneeAktiebolaget Skf
InventorsBenoit Arnault, Thomas Perrotin, Samuel Viault
Life of this patent
Estimating the term…
Abstract
A ball bearing and to a clutch thrust bearing device including such a bearing. The invention also relates to a driveline system including such a device, the system being provided to an all-wheel drive driveline system of a motor vehicle. The ball bearing comprises a fixed inner ring able to bear against an axially movable piston, a rotatable outer ring, and one series of balls between the rings. The rotatable outer ring further comprises a shield provided with a folded flange able to bear against a resilient biasing member.
Claims8
A ball bearing comprising:
- a fixed inner ring comprising a toroidal portion of outside toroidal surface forming an inner raceway for balls, and a radial portion that outwardly radially extends from the toroidal portion, the radial portion having an axial contact surface able to bear against an axially movable piston;
- a rotatable outer ring comprising a toroidal portion of inner toroidal surface forming an outer raceway for balls, a radial portion that inwardly radially extends from inner side of the toroidal portion, and an axial portion that axially extends from outer side of the toroidal portion towards the fixed inner ring;
- and
- one series of balls located in a raceway chamber defined between the rings,
- wherein the rotatable outer ring is provided with an annular shield, the annular shield comprises:
- a front shield portion and a rear shield portion that substantially radially extend, the rotatable outer ring being axially clamped between the front and rear shield portions, and
- an intermediate shield portion that substantially axially extends by connecting the front and rear shield portions, that radially covers the rotatable outer ring, and that is provided with two outwards radial flanges connected together and folded towards one another, one of the radial flanges having an axial contact surface dedicated to bear against a resilient biasing member;
- and
- wherein the rear shield portion radially extends in the raceway chamber so as to retain the balls.
6 more elements
A ball bearing comprising:
- a fixed inner ring comprising a toroidal portion of outside toroidal surface forming an inner raceway for balls, and a radial portion that outwardly radially extends from the toroidal portion, the radial portion having an axial contact surface able to bear against an axially movable piston;
- a rotatable outer ring comprising a toroidal portion of inner toroidal surface forming an outer raceway for balls, a radial portion that inwardly radially extends from inner side of the toroidal portion, and an axial portion that axially extends from outer side of the toroidal portion towards the fixed inner ring;
- and
- one series of balls located in a raceway chamber defined between the rings,
- wherein the rotatable outer ring is provided with an annular shield, the annular shield comprises:
- a front shield portion and a rear shield portion that substantially radially extend, the rotatable outer ring being axially clamped between the front and rear shield portions, and
- an intermediate shield portion that substantially axially extends by connecting the front and rear shield portions, that radially covers the rotatable outer ring, and that is provided with two outwards radial flanges connected together and folded towards one another, one of the radial flanges having an axial contact surface dedicated to bear against a resilient biasing member;
- and
- wherein the front shield portion comprises an axial contact surface dedicated to bear against a coupling member.
6 more elements
A clutch thrust bearing device comprising:
- a housing,
- a ball bearing comprising:
- a fixed inner ring comprising a toroidal portion of outside toroidal surface forming an inner raceway for balls, and a radial portion that outwardly radially extends from the toroidal portion, the radial portion having an axial contact surface able to bear against an axially movable piston;
- a rotatable outer ring comprising a toroidal portion of inner toroidal surface forming an outer raceway for balls, a radial portion that inwardly radially extends from inner side of the toroidal portion, and an axial portion that axially extends from outer side of the toroidal portion towards the fixed inner ring;
- and
- one series of balls located in a raceway chamber defined between the rings,
- wherein the rotatable outer ring is provided with an annular shield, the annular shield comprising:
- a front shield portion and a rear shield portion that substantially radially extend, the rotatable outer ring being axially clamped between the front and rear shield portions, and
- an intermediate shield portion that substantially axially extends by connecting the front and rear shield portions, that radially covers the rotatable outer ring, and that is provided with two outwards radial flanges connected together and folded towards one another, one of the radial flanges having an axial contact surface dedicated to bear against a resilient biasing member;
- an axially movable piston disposed within a cavity between the housing and the ball bearing, the piston cavity being connected to a source of hydraulic fluid which may variably provide pressurized fluid in the cavity to axially move the piston,
- a resilient biasing member exerting an axial preload onto the ball bearing, the ball bearing being able to axially move by the piston movement and then compressing the resilient biasing member, and
- a coupling member dedicated to engage plates.
9 more elements
Dependencies are inferred from the claim text.