Sealing element and bearing arrangement therewith

Abstract

A sealing element seals a space between a first bearing ring and a second bearing ring. The sealing ring includes a sealing disk which has a plurality of sealing segments on at least one periphery. Alternate sealing segments are oriented at positive and negative angles with respect to a main plane of the sealing disk. The sealing element is installed into the bearing such that the sealing segments extend into and contact a recess in one of the bearing rings.

Claims

1. A sealing element for sealing a space between a first bearing ring and a second bearing ring which have a common axis of rotation, the sealing element comprising: a sealing disk which has a plurality of sealing segments on at least one circumference, wherein the sealing segments belong alternately to a first sealing segment group, a second sealing segment group, and a third sealing group, wherein the sealing segments of the first sealing segment group exhibit a negative angle, the sealing segments of the second sealing segment group exhibit a first positive angle, and the third sealing group exhibit a second positive angle different than the first positive angle in relation to the main extension plane.

2. The sealing element of claim 1, wherein the sealing segments of the first sealing segment group are shorter than the sealing segments of the second sealing segment group.

3. The sealing element of claim 1, wherein the sealing segments are arranged on the radially outer circumference of the sealing disk.

4. The sealing element of claim 1, wherein the sealing disc and the sealing segments are configured together in one piece.

5. A bearing arrangement comprising: a first bearing ring; a second bearing ring which can be rotated about a common axis with respect to the first bearing ring; rolling bodies arranged between the bearing rings; and a sealing element according to claim 1, wherein at least one of the bearing rings has a circumferential recess in which the sealing segments of the first and second sealing segment group come to rest.

6. The bearing arrangement of claim 5, wherein the sealing segments of the second sealing segment group extend radially beyond a recess edge into the recess.

7. The bearing arrangement of claim 6, wherein the recess edge is configured on an outer edge of the bearing ring.

8. The bearing arrangement of claim 5, wherein the sealing segments of the first sealing segment group are angled axially in the direction of the rolling bodies.

9. A bearing arrangement comprising: a first bearing ring having a circumferential recess; a second bearing ring; a plurality of rolling bodies arranged between the bearing rings; and a sealing element having a disk, a first group of sealing segments extending from a periphery of the disk into the recess, wherein the sealing segments of the first group are angled toward the rolling bodies, a second group of sealing segments extending from the periphery of the disk into the recess, wherein the sealing segments of the second group are angled away from the rolling bodies, and a third group of sealing segments extending from the periphery of the disk, contacting first the first bearing ring outside of the recess, and angled toward the rolling bodies.

10. The bearing arrangement of claim 9 wherein the sealing segments of the first sealing segment group are shorter than the sealing segments of the second sealing segment group.

11. The bearing arrangement of claim 9 wherein: the first ring is an outer ring; the second ring is an inner ring; and the sealing segments are arranged on the radially outer periphery of the sealing disk.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages and details are illustrated by the following description of preferred embodiments, with reference to the attached drawings. In the drawings:

(2) FIG. 1 shows a partial sectional view of a first embodiment of a sealing element;

(3) FIG. 2 shows a detail plan view of the circumference side of the sealing element according to FIG. 1;

(4) FIG. 3 shows a partial sectional view of a bearing arrangement with a second embodiment of the sealing element;

(5) FIG. 4 shows a cross-sectional view of a bearing arrangement with the sealing element.

DETAILED DESCRIPTION

(6) FIG. 1 shows a partial sectional view of a first embodiment of a sealing element 01. The sealing element 01, which is used to seal a space, comprises a disk-shaped sealing disk 02 on which multiple sealing segments 03 are arranged. The sealing disk 02 and the sealing segments 03 are produced as one piece. The sealing segments 03 are divided into two sealing segment groups, namely into a first sealing segment group 04 and a second sealing segment group 06. The sealing element 01 has a main extension plane 07. The sealing segments of the first sealing segment group 04 are angled in a negative direction (relative to the clockwise direction) starting from the main extension plane 07. In other words, the main extension plane 07 and the sealing segments of the first sealing segment group 04 are spanned by a negative angle. The sealing segments of the second sealing segment group 06 are angled in a positive direction (relative to the clockwise direction) starting from the main extension plane 07. In other words, the main extension plane 07 and the sealing segments of the second sealing segment group 04 are spanned by a positive angle. The sealing segments 03 are made of an elastic material.

(7) FIG. 2 shows a detailed plan view of the front side of the sealing element 01 according to FIG. 1. The individual sealing segments 03 of the first and second sealing segment groups 04, 06 can be seen in the plan view according to FIG. 2. The sealing segments of the first and second sealing segment groups 04, 06 are arranged in an alternatingly circumferential manner on the sealing disk 02, wherein the side surfaces of adjacent sealing segments 03 abut one another at least partially.

(8) FIG. 3 shows a partial sectional view of a bearing arrangement 08 with a second embodiment of the sealing element 01 which is mounted. In addition to the sealing segments of the first and second sealing segment groups 04, 06, a sealing segment of a further third sealing segment group 09 is arranged on the sealing disk 02. The sealing segment of the third sealing segment group 09 is configured circumferentially on the sealing disk 02. The main extension plane 07 of the sealing element 01 and the sealing segment of the third sealing segment group 09 is spanned by a negative angle which is greater than the span angle between the sealing segments of the first sealing segment group 04 and the main extension plane 07.

(9) The “fanned out” arrangement of the sealing segments 03 is evident in FIG. 3, making simple and accurate positioning of the sealing element 01 possible. The sealing element 01 sits on an outer bearing ring 11. The outer bearing ring 11 has a circumferential recess 12. On the outer edge of the outer bearing ring 11 is formed a recess edge 13 with a given diameter. The diameter of the recess edge 13 is greater than an inner ring diameter 14 of the outer bearing ring 11, but smaller than an outer ring diameter of the outer bearing ring 11. The sealing segments of the first and second sealing segment group 04, 06 rest at least partially against the recess 12 in the outer bearing ring 11. The sealing segment of the further sealing segment group 09 rests in a sealing manner against the inner ring diameter 14 of the outer bearing ring 11. The diameter of the sealing disk 02 with the sealing segment of the first sealing segment group 04 is smaller than the diameter of the sealing disk with the sealing segment of the second sealing segment group 06. In other words, the sealing segments of the first sealing segment group 04 are shorter than the sealing segments of the second sealing segment group 06.

(10) FIG. 4 shows a cross-sectional view of the bearing arrangement 08 with the sealing element 01, wherein the sealing element resembles the sealing element 01 shown in FIG. 1. The sealing element 01 comprises the sealing disk 02 and sealing segments of the first and second sealing segment group 04, 06. The bearing arrangement 08 furthermore comprises the outer bearing ring 11 and an inner bearing ring 17 which have a common axis of rotation 18. The bearing rings 11, 17 are rotatable in respect of one another. Rolling bodies 19 are arranged between the bearing rings 11, 17. The outer bearing ring 11 has a circumferential recess 12. The sealing element 01 rests with the sealing segments of the first and second sealing segment group 04, 06 in the recess 12. The sealing element 01 is therefore shown in the installed state. The recess 12 is open in the radial direction towards the inner bearing ring 17. Accurate axial and radial positioning of the sealing element 01 is guaranteed by means of the sealing segments of the first and second sealing segment group 04, 06.

LIST OF REFERENCE NUMBERS

(11) 01 Sealing element 02 Sealing disk 03 Sealing segments 04 First sealing segment group 05 - 06 Second sealing segment group 07 Main extension plane 08 Bearing arrangement 09 Third sealing segment group 10 - 11 Outer bearing ring 12 Recess 13 Recess edge 14 Inner ring diameter of the outer bearing ring 11 15 - 16 - 17 Inner bearing ring 18 Axis of rotation 19 Rolling body