초록 ▼

A suspension thrust bearing device having a lower cover, an upper cover and a rolling bearing disposed between the lower cover and the upper cover. The rolling bearing providing a lower ring mounted on the lower cover and an upper ring mounted on the upper cover. The rolling bearing further providin

A suspension thrust bearing device having a lower cover, an upper cover and a rolling bearing disposed between the lower cover and the upper cover. The rolling bearing providing a lower ring mounted on the lower cover and an upper ring mounted on the upper cover. The rolling bearing further providing rolling elements disposed between the two rings. The lower cover has a body formed of a rigid material part and a flexible material part forming a seal of the device. The flexible part of the lower cover includes at least one labyrinth sealing lip that cooperates with the upper cover to leave a narrow passage forming a labyrinth seal between one edge of the labyrinth sealing lip and the upper cover and at least one rubbing sealing lip in contact with the upper cover.

대표청구항 ▼

1. A suspension thrust bearing device comprising: a lower cover,an upper cover, the upper cover being formed only by rigid material, anda rolling bearing disposed between the lower cover and the upper cover, and whereinthe rolling bearing comprises:a lower ring mounted on the lower cover andan upper

1. A suspension thrust bearing device comprising: a lower cover,an upper cover, the upper cover being formed only by rigid material, anda rolling bearing disposed between the lower cover and the upper cover, and whereinthe rolling bearing comprises:a lower ring mounted on the lower cover andan upper ring mounted on the upper cover, androlling elements disposed between the two rings, and whereinthe lower cover having a body formed of a rigid material part and a flexible material part forming a seal of said device, andattachment means being provided on each of the lower cover and the upper cover to prevent axial separation of said covers, and whereinthe flexible part of the body of said lower cover includes at least one labyrinth sealing lip not in contact with any rigid surface while cooperating with the upper cover to leave a narrow passage forming a labyrinth seal between one edge of said labyrinth sealing lip and the upper cover and at least one rubbing sealing lip in continuous contact with the upper cover and whereinthe sealing lips are separate from the attachment means. 2. The suspension thrust bearing device according to claim 1, wherein the sealing lips are disposed on a same side relative to the rolling bearing. 3. The suspension thrust bearing device according to claim 1, wherein the rubbing sealing lip is disposed between the rolling elements and the labyrinth sealing lip. 4. The suspension thrust bearing device according to claim 3, wherein the rubbing sealing lip is in contact with a radial surface portion of the upper cover. 5. The suspension thrust bearing device according to claim 1, wherein the labyrinth sealing lip is disposed between the rolling elements and the rubbing sealing lip. 6. The suspension thrust bearing device according to claim 5, wherein the rubbing sealing lip is in contact with a cylindrical surface portion of the upper cover. 7. The suspension thrust bearing device according to claim 1, wherein the sealing lips are inclined relative to each other, forming with an axis (Y) of the rolling bearing an obtuse angle (β) and an acute angle (α), respectively. 8. The suspension thrust bearing device according to claim 1, wherein the lower cover comprises a radial annular flange extending radially outward beyond the upper cover. 9. The suspension thrust bearing device according to claim 1, wherein the upper cover comprises an inner annular skirt and an outer annular skirt, and wherein the inner annular skirt comprises a hook extending radially toward the lower cover and able to cooperate with a corresponding hook on the lower cover. 10. The suspension thrust bearing device according to claim 9 wherein the hooks are disposed on an opposite side of the rolling elements to the sealing lips. 11. The suspension thrust bearing device according to claim 9, wherein the hooks are disposed on an inside of the rolling elements and the sealing lips are disposed on the outside of the rolling elements. 12. The suspension thrust bearing device according to claim 1, wherein the rigid material part and the flexible material part of said body are formed from synthetic materials of different kinds and are moulded one onto the other. 13. A strut comprising: a damper, anda suspension thrust bearing device, the thrust bearing device comprising:a lower cover,an upper cover, the upper cover being formed only by rigid material, anda rolling bearing disposed between the lower cover and the upper cover, and whereinthe rolling bearing comprises:a lower ring mounted on the lower cover andan upper ring mounted on the upper cover, androlling elements disposed between the two rings, and whereinthe lower cover having a body formed of a rigid material part and a flexible material part forming a seal of said device, andattachment means being provided on each of the lower cover and the upper cover to prevent axial separation of said covers, and whereinthe flexible part of the body of said lower cover includes at least one labyrinth sealing lip not in contact with any rigid surface while cooperating with the upper cover to leave a narrow passage forming a labyrinth seal between one edge of said labyrinth sealing lip and the upper cover and at least one rubbing sealing lip in continuous contact with the upper cover and whereinthe sealing lips are separate from the attachment means. 14. A suspension thrust bearing device comprising: a lower cover,an upper cover, the upper cover being formed only by rigid material, anda rolling bearing disposed between the lower cover and the upper cover, and whereinthe rolling bearing comprises:a lower ring mounted on the lower cover andan upper ring mounted on the upper cover, androlling elements disposed between the two rings, and whereinthe lower cover having a body formed of a rigid material part and a flexible material part forming a seal of said device, andattachment means being provided on each of the lower cover and the upper cover to prevent axial separation of said covers, and whereinthe flexible part of the body of said lower cover being formed by a single member, the flexible part comprises at least one labyrinth sealing lip not in contact with any rigid surface while cooperating with the upper cover to leave a narrow passage forming a labyrinth seal between one edge of said labyrinth sealing lip and the upper cover and at least one rubbing sealing lip in continuous contact with the upper cover, the at least one labyrinth sealing lip and the at least one rubbing sealing lip extending from a common point; andwherein the sealing lips are separate from the attachment means.