Slewing bearing, in particular for a vehicle

Patent metadata

Field	Value
Publication number	US-9644679-B2
Application number	US-201514830191-A
Country	US
Kind code	B2
Filing date	Aug 19, 2015
Priority date	Aug 25, 2014
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A slewing bearing, in particular for a vehicle, comprises an inner ring, an outer ring, at least one row of rolling elements disposed between the inner and outer rings, and a sealing feature that define between the rings a closed annular space within which the rolling elements are disposed. The bearing also comprises at least one seal that is fixed to the outer ring and comprises at least one sealing lip that is oriented towards the outside of the bearing, and at least one deflector that is fixed to the outer ring and comprises a deflecting part that is at least partially offset axially towards the outside with respect to the sealing lip of the seal.

First claim

The invention claimed is:

1. A slewing bearing, in particular for a vehicle, comprising:
an inner ring;
an outer ring;
at least one row of rolling elements disposed between the inner and outer rings;
a sealing feature that defines between the inner ring and the outer ring, a closed annular space within which the rolling elements are disposed; and
at least one seal that is fixed to the outer ring, the at least one seal comprising:
at least one sealing lip that is oriented towards the outside of the bearing, and
at least one deflector that is fixed to the outer ring and comprises a deflecting part that is at least partially offset axially towards the outside with respect to the sealing lip of the seal.

2. The slewing bearing according to claim 1 , wherein the deflector is offset radially towards the outside with respect to the seal.

3. The slewing bearing according to claim 1 , wherein the deflecting part of the deflector radially surrounds the sealing lip of the seal.

4. The slewing bearing according to claim 1 , wherein the sealing lip of the seal projects axially with respect to a frontal surface of the outer ring.

5. The slewing bearing according to claim 1 , wherein the deflecting part of the deflector extends one of axially or obliquely.

6. The slewing bearing according to claim 1 , wherein the deflector is fixed to an outer surface of the outer ring.

7. The slewing bearing according to claim 6 , wherein the deflector is fixed into a slot formed in the outer surface.

8. The slewing bearing according to claim 1 , wherein the seal is fixed into a slot formed on a frontal surface of the outer ring.

9. The slewing bearing according to claim 1 , wherein the outer ring comprises at least two assembled partial rings.

10. The slewing bearing according to claim 9 , further comprising seals interposed between the partial rings.

11. A vehicle comprising:
a chassis;
a turret that is rotatable with respect to the chassis; and
at least one slewing bearing comprising:
an inner ring,
an outer ring,
at least one row of rolling elements disposed between the inner and outer rings,
a sealing feature that defines between the inner ring and the outer ring, a closed annular space within which the rolling elements are disposed, and
at least one seal that is fixed to the outer ring, the at least one seal comprising:
at least one sealing lip that is oriented towards the outside of the bearing, and
at least one deflector that is fixed to the outer ring and comprises a deflecting part that is at least partially offset axially towards the outside with respect to the sealing lip of the seal,

wherein the at least one slewing bearing is interposed between the turret and the chassis, the sealing lip of the seal interacting by friction with the chassis and the deflecting part of the deflector interacting with the chassis in order to obtain a narrow-passage seal.

Assignees

• Delaby Juliette
• Dondaine Herve
• Nicolas Michel
• Skf Ab

Inventors

• Delaby Juliette
• Dondaine Herve
• Nicolas Michel

Classifications

• F16C19/362

  the rollers being crossed within the single row · CPC title

• F16C33/7886

  mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race · CPC title

• E02F9/121

  Turntables, i.e. structure rotatable about 360° · CPC title

• F16C33/7823 Primary

  of sealing lips · CPC title

• F16C33/7876 Primary

  with sealing lips · CPC title