DE102017122381A1 - Rolling bearings for a motor vehicle - Google Patents

Abstract

The invention relates to a rolling bearing (1) for a motor vehicle, comprising an inner ring (2) and a relatively rotatable outer ring (3), with radially between the inner ring (2) and the outer ring (3) arranged rolling elements (4), wherein Outer ring (3) an ABS encoder element (5), consisting of a ring member (6) and a plastic part (7) is arranged, wherein the ABS encoder element (5) on an outer peripheral surface (8) and / or an end face (9 ) of the outer ring (3) is pressed axially, wherein the ABS encoder element (5) has a folding portion (10) which at least partially comes to rest on the outer peripheral surface (8) or on the end face (9) of the outer ring (3).

Description

The invention relates to a rolling bearing for a motor vehicle, comprising an inner ring and a relatively rotatable outer ring, with radially arranged between the inner ring and the outer ring rolling elements, wherein the outer ring, an ABS encoder element, consisting of a ring member and a plastic part, is arranged.

From the DE 10 2012 214 872 B4 shows an ABS encoder assembly with an annular disc core carrying a multi-pole structure and a sealing ring member comprising an angle ring and an elastomeric body connected thereto forming a sealing lip structure. The angle ring comprises a cylinder jacket portion and a radially inwardly penetrating annular disc portion, which carries the sealing lip structure. The annular disc core is formed such that it protrudes radially inwardly over an inner peripheral surface of the cylinder jacket portion of the angle ring, wherein on the inner circumferential surface of the cylinder jacket portion of the angle ring a filler ring formed of an elastomeric material is attached. The Füllkörperring is formed such that the thickness measured in the radial direction of the Füllkörperrings is greater than the measured in the radial direction supernatant of the annular disk core.

The object of the present invention is to further develop a rolling bearing with an ABS encoder for a motor vehicle of the aforementioned type, and in particular to reduce the manufacturing cost of the rolling bearing.

This object is achieved by the features of independent claim 1. Advantageous embodiments will become apparent from the respective dependent claims, the description and the drawings.

An inventive rolling bearing for a motor vehicle comprises an inner ring and a relatively rotatable outer ring, with radially arranged between the inner ring and the outer ring rolling elements, wherein the outer ring, an ABS encoder element, consisting of a ring member and a plastic part, is arranged, wherein the ABS Encoder element is pressed axially on an outer peripheral surface and / or an end face of the outer ring, wherein the annular part has a folding portion which comes at the outer peripheral surface or at the end face of the outer ring at least partially to the plant.

The ABS encoder element is pressed in a pressing operation in the axial direction of the outer ring, so that a press fit or a press fit between the ABS encoder element and the outer ring is generated. The region of the press fit between the ABS encoder element and the outer ring is preferably formed directly below the folding portion of the ring member. It is advantageous that thereby a deformation of the ring member is avoided during the pressing operation and thus the performance of the ABS encoder element is improved due to the undeformed reading surface on the ring member. This consequently results in a lower susceptibility to failure of the ABS system during operation of the rolling bearing. The reading surface is at least a portion of the outer peripheral surface of the ring member.

According to a preferred embodiment, the ring member is formed of a metal. The folding portion is made by a mechanical forming process by the ring member is folded, wherein a first leg of the ring member at least partially comes to rest on a second leg of the ring member. It is also conceivable that the ring member is folded with a radius, so that the plastic part is at least partially received between the two legs. In other words, the plastic part is arranged on the outer peripheral surface of the ring member and at least partially received in the folding section. A further advantage of the folding section is that the press fit is improved, allowing up to 25% smaller thickness of the ring member and thus reducing the manufacturing cost of the ABS encoder element.

The annular part preferably has an annular disk section and a first cylinder section with a first inner diameter and a second cylinder section with a second inner diameter, wherein the first or second cylinder section at least partially comes into contact with the outer peripheral surface of the outer ring. The first and second cylinder sections may have the same inner diameter, but they may also have different inner diameters. An advantage of an embodiment of the ABS encoder element with different inner diameters is that the ABS encoder element can be pressed onto two different outer rings with two different outer diameters. This results in an increase in cost effectiveness due to the design.

The folding section may, for example, form the first or second cylinder section, or also the annular disk section. On the outer peripheral surface of the ring member, the plastic part extends substantially over the first and second cylinder portion of the ring member. The plastic part does not extend beyond the axial end faces of the annular disc section. During the pressing process, the ABS encoder element is in axial Direction pressed onto the outer ring. Since a pressing tool is thus directly applied to the metallic ring member, the accuracy of the pressing operation can be increased. Furthermore, the manufacturing costs for the ABS encoder element can be reduced due to the lower required plastic content.

Preferably, the ABS encoder element is for detecting a wheel speed in interaction with a sensor element. The outer ring is preferably driven, so that the permanently mounted sensor element can detect the rotational speed of the outer ring or the wheel speed via the ABS encoder element. Furthermore, the sensor element can be connected to an evaluation device which evaluates the detected measured values in order to prevent the wheels from locking during a braking process of the motor vehicle.

In particular, the rolling bearing according to the invention is used in a motor vehicle. A motor vehicle is to be understood as a vehicle which, according to its type and its special equipment fixedly connected to the vehicle, serves for the transport of persons or goods. For example, a motor vehicle is to be understood as meaning a passenger car or a lorry.

• 1 eine schematische Schnittdarstellung eines erfindungsgemäßen Wälzlagers für ein Kraftfahrzeug,
• 2 eine schematische Detailschnittdarstellung zur Veranschaulichung des Aufbaus eines ABS-Encoderelements nach einem ersten Ausführungsbeispiel,
• 3 eine schematische Detailschnittdarstellung zur Veranschaulichung des Aufbaus eines ABS-Encoderelements nach einem zweiten Ausführungsbeispiel, und
• 4 eine schematische Detailschnittdarstellung zur Veranschaulichung des Aufbaus eines ABS-Encoderelements nach einem dritten Ausführungsbeispiel.

Further measures improving the invention will be described in more detail below together with the description of three preferred embodiments of the invention with reference to the four figures, wherein the same or similar elements are provided with the same reference numerals. This shows

• 1 a schematic sectional view of a rolling bearing according to the invention for a motor vehicle,
• 2 a schematic detail sectional view illustrating the construction of an ABS encoder element according to a first embodiment,
• 3 a schematic detail sectional view illustrating the construction of an ABS encoder element according to a second embodiment, and
• 4 a schematic detail sectional view illustrating the construction of an ABS encoder element according to a third embodiment.

According to 1 includes a rolling bearing 1 for a - not shown here - motor vehicle an inner ring 2 and a relatively rotatable outer ring 3 , The outer ring 3 is driven here. Radial between the inner ring 2 and the outer ring 3 are rolling elements 4 arranged. On the outer ring 3 is an ABS encoder element 5 arranged by pressing on the outer ring 3 is pressed and forms a press fit. The ABS encoder element 5 stands with a sensor element 14 for detecting a wheel speed in interaction.

After the 2 to 4 consists of the ABS encoder element 5 from a ring part 6 and a plastic part 7 , where the ABS encoder element 5 in a pressing operation on an outer peripheral surface 8th and an end face 9 of the outer ring 3 is pressed axially. The ring part 6 of the ABS encoder element 5 has a folding section 10 on, on the outer peripheral surface 8th or on the face 9 of the outer ring 3 at least partially comes to the plant. The folding section 10 is formed such that a first leg 15a and a second leg 15b of the ring part 6 are mechanically folded. In other words, the two thighs lie 15a . 15b of the ring part 6 at least partially together. The ring part 6 In the present case, it is formed from a metal which, by means of a forming process, forms an annular disk section 11 and a first cylinder section 12a with a first inner diameter 13a and a second cylinder portion 12b with a second inner diameter 13b having. Thus, the ring part 6 essentially T-shaped.

To 2 is a first embodiment of the ABS encoder element 5 shown. The folding section 10 of the ring part 6 forms the first cylinder section 12a with the first inner diameter 13a off and comes on the outer peripheral surface 8th of the outer ring 3 to the plant. The ring disk section 11 comes at the front 9 of the outer ring 3 to the plant. The ABS encoder element 5 is by means of a - not shown here - pressing tool on the annular disc section 11 at the front 9 of the outer ring 3 pressed and forms a press fit. The second cylinder section 12b protrudes axially and has a second inner diameter 13b which is larger than the first inner diameter 13a of the first cylinder section 12a , The plastic part 7 of ABS encoder element 5 is on the outer peripheral surface of the ring member 5 arranged and extends over the outer peripheral surface of the first and second cylinder portion 12a . 12b ,

3 shows a second embodiment of the ABS encoder element 5 , The folding section 10 of the ring part 6 forms the ring disk section 11 out and comes to the frontal area 9 of the outer ring 3 to the plant. The first cylinder section 12a with the first inner diameter 13a comes on the outer peripheral surface 8th of the outer ring 3 to the plant and forms a press fit. The second cylinder section 12a with the second inner diameter 13b protrudes axially, wherein the first inner diameter 13a and the second inner diameter 13b are essentially the same size. The plastic part 7 of the ABS encoder element 5 is on the outer peripheral surface of the ring member 5 arranged and extends over the outer peripheral surface of the first and second cylinder portion 12a . 12b ,

According to 4 is a third embodiment of the ABS encoder element 5 shown. The folding section 10 of the ring part 6 forms the ring disk section 11 out and comes to the frontal area 9 of the outer ring 3 to the plant. The plastic part 7 of the ABS encoder element 5 is on the outer peripheral surface of the ring member 5 arranged and extends over the outer peripheral surface of the first and second cylinder portion 12a . 12b , where the plastic part 7 further into the folding section 10 extends. In other words, the ring part 6 folded by a mechanical forming process such that the plastic part 7 partially between a first leg 15a and a second leg 15b is arranged. The first cylinder section 12a with the first inner diameter 13a comes on the outer peripheral surface 8th of the outer ring 3 to the plant and forms a press fit. The second cylinder section 12a with the second inner diameter 13b protrudes axially, wherein the first inner diameter 13a and the second inner diameter 13b are essentially the same size.

LIST OF REFERENCE NUMBERS

1

roller bearing

2

inner ring

3

outer ring

4

rolling elements

5

ABS encoder element

6

ring part

7

Plastic part

8th

Outer circumferential surface

9

face

10

folding section

11

Washer section

12a, 12b

cylinder section

13a, 13b

Inner diameter

14

sensor element

15a, 15b

leg

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012214872 B4 [0002]

Claims (4)

Rolling bearing (1) for a motor vehicle, comprising an inner ring (2) and a relative thereto rotatable outer ring (3), with radially between the inner ring (2) and the outer ring (3) arranged rolling elements (4), wherein on the outer ring (3) an ABS encoder element (5) consisting of a ring part (6) and a plastic part (7) is arranged, wherein the ABS encoder element (5) on an outer peripheral surface (8) and / or an end face (9) of the outer ring ( 3) is pressed axially, characterized in that the annular part (6) has a folding portion (10) which comes at the outer peripheral surface (8) or at the end face (9) of the outer ring (3) at least partially to the plant. Rolling bearing (1) according to Claim 1 characterized in that the ring member (6) comprises an annular disk portion (11) and a first cylinder portion (12a) having a first inner diameter (13a) and a second cylinder portion (12b) having a second inner diameter (13b), the first or second Cylinder portion (12a, 12b) on the outer peripheral surface (8) of the outer ring (3) at least partially comes to rest. Rolling bearing (1) according to one of the preceding claims, characterized in that the ABS-encoder element (5) interacts with a sensor element (14) for detecting a wheel speed. Rolling bearing (1) according to one of the preceding claims, characterized in that the ring part (6) is formed from a metal.

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