Encoder for a wheel bearing and wheel bearing having an encoder of this type

Abstract

The invention relates to an encoder (2) for a wheel bearing (1), comprising a carrier plate ring (4) having a radially extending first leg (4a) and an axially extending second leg (4b), the axially extending second leg (4b) of the carrier plate ring (4) being arranged on an outer ring (3a) or an inner ring (3b) of the wheel bearing (1), the carrier plate ring (4) being at least partially surrounded by a magnetic encoding ring (7), the carrier plate ring (4) having cutouts (10) distributed on the circumference on the radially extending first leg (4a), the first leg (4a) having a folding portion (15) for forming a folding portion (4d), the folding portion (4d) of the first leg (4a) at least partially covering the cutout, the encoding ring (7) being monopolarly magnetized and at least partially in contact with the cutout (10). The invention also relates to a wheel bearing (1) comprising an encoder (2) of this type.

Description

Technical Field

[0001] The invention relates to an encoder for a wheel bearing, in particular an encoder for a rolling ball bearing. The invention also relates to a wheel bearing having an encoder of this type. Background Art

[0002] For example, EP 0 892 185 A2 shows a seal integrated with an encoder, which is installed between a fixed support and a rotating support of a rolling bearing or a bearing. The seal includes a mobile frame having a disk. The magnetic coding element is supported by the disk and is formed by an elastomer loaded with magnetic particles that cover the outside of the disk. In addition, the magnetic coding element carries a radially outer sealing lip attached to the disk and resting on the rotating support, wherein the disk is fixedly attached to a cylindrical support surface arranged on the mobile support. The magnetic coding element also carries an axial-radial lip in contact with the tapered support surface of the fixed support. The disk includes a first wall and a second wall axially displaced outward relative to the first wall, wherein the second wall is adjacent to the cylindrical support surface. Summary of the invention

[0003] The object of the invention is to provide an encoder for a wheel bearing of a vehicle which is simple to produce and dimensionally stable. This object is achieved by an encoder having the features of claims 1, 8 and 10. Preferred or advantageous embodiments of the invention are apparent from the dependent claims, the following description and the drawings.

[0004] An encoder for a wheel bearing according to the invention comprises a carrier plate ring, the carrier plate ring having a radially extending first leg and an axially extending second leg, the axially extending second leg of the carrier plate ring being arranged on the outer ring or the inner ring of the wheel bearing, the carrier plate ring being at least partially surrounded by a magnetic encoding ring, the carrier plate ring having cutouts distributed on the circumference on the radially extending first leg, the first leg having a folded portion for forming a folded portion, the folded portion of the first leg at least partially covering the cutout, and the encoding ring being monopolarly magnetized and at least partially in contact with the cutout. In other words, the carrier plate ring is at least partially wrapped or overmolded by the material of the magnetic encoding ring. Preferably, the encoding ring is bonded to the carrier plate ring by means of a chemical bonding system, for example by means of vulcanization. Thus, the encoding ring is at least partially materially connected to the carrier plate ring by material bonding.

[0005] According to a preferred exemplary embodiment, the cross section of the carrier plate ring is substantially L-shaped and is formed of metal, and the carrier plate ring has a first leg and a second leg, wherein the first leg extends substantially radially and the second leg extends substantially axially. In addition, the radially oriented first leg is designed to be folded so that a folded portion is formed integrally with the first leg. In other words, the first leg is folded or has a folded portion at a radial position based on the application, so that the radial end of the first leg or the folded portion points to the direction of the axially aligned second leg after the forming or folding operation. Therefore, the first leg and the folded portion of the first leg are axially adjacent to each other and are connected integrally via the folded portion. In other words, the radially extending first leg and the folded portion are arranged substantially parallel to each other. The first leg and the second leg are also arranged relative to each other so that a substantially right angle is formed between the two legs. The carrier plate ring is preferably ferromagnetic.

[0006] The carrier plate ring is pressed onto a corresponding rotatable ring in the wheel bearing, which, depending on the application, can be the inner ring or the outer ring of the wheel bearing, or the carrier plate ring is arranged in a fixed manner, i.e. axially fixed and non-rotatably, using a suitable alternative method. In contrast, in the example of an L-shaped carrier plate ring, a radially extending first leg extends spatially in the radial direction between the inner ring and the outer ring, wherein the encoding ring is essentially connected to the first leg and acts together with the sensor device.

[0007] The sensor device may comprise one or more sensor elements, such as a speed sensor, wherein the sensor elements may be based on different physical operating principles.

[0008] The term "unipolar magnetization encoder" refers to an encoder in which the magnetized material has only a single polarity. Depending on the spatial direction of the measured magnetic flux density, a change in polarity occurs. If the magnetization measurement is carried out in the x-direction, i.e. in the circumferential direction of the carrier plate ring, the measurement signal is symmetrical around the zero point. In other words, there is a symmetrical course of the magnetic flux density components about the zero point, so that a change in polarity occurs. However, if the magnetization measurement is carried out in the z-direction, i.e. perpendicularly to the radially extending first leg or encoder ring surface, the encoder ring exhibits a single magnetization applied in only one direction over the entire circumference, which changes in intensity due to the change in the material thickness of the encoder ring caused by the cutout.

[0009] To produce the magnetization of the encoder ring, a magnetizing tool or magnetizing head is used, which has, for example, a cylindrical base and produces a monopolar magnetization on the encoder ring. Advantageously, the design and manufacture of such a magnetizing tool is relatively simple compared to magnetizing tools for producing multi-pole encoders. This makes it possible to use a single magnetizing tool regardless of the size of the encoder or the number of increments. Elastomers and thermoplastics enriched with suitable magnetic fillers, such as strontium ferrite SrFe, are particularly suitable materials for encoder rings.

[0010] As required, the cutouts formed on the radial first leg can be evenly or unevenly distributed over the entire circumference of the first leg. The cutouts are thus formed as openings or windows in which the encoding ring is at least partially engaged. Preferably, the cutouts are completely filled or closed by the material of the encoding ring. Thus, several cutouts are arranged circumferentially distributed on the radial first leg, wherein the encoding ring is formed in a perforated manner.

[0011] Preferably, the encoding ring is arranged over the entire circumference of the carrier plate ring. Depending on the application, it is also conceivable to interrupt the encoding ring and thus arrange it partially around the circumference of the carrier plate ring. In addition, it is also conceivable to guide or arrange the material of the encoding ring further up to the seat of the axially extending leg of the carrier plate ring on the inner ring or outer ring in order to increase the static sealing effect of the press fit.

[0012] Before the fold is produced by forming and thus the fold of the radially extending first leg, the cut on the radial first leg is preferably produced by means of stamping. Preferably, the fold of the radially extending first leg is configured to form the opposite face of the sealing lip of the sealing element. In other words, the fold is configured in such a way that in operation, at least one sealing lip of the sealing element contacts the fold in a sealing manner. To this end, the corresponding sealing lips are substantially axially aligned and abut against the opposite face of the fold. Therefore, the fold is arranged on the side of the radially extending first leg facing the axially extending second leg. In other words, the fold is arranged on the side of the radially extending first leg facing the sealing element and is in axial contact with the radially extending first leg. Therefore, the radially extending first leg is arranged substantially parallel to the fold.

[0013] Since the carrier plate ring of the encoder can be produced by stamping and forming, the encoder can be manufactured simply and inexpensively without further processing or forming steps. In addition, the dimensional stability and the sealing effect are not restricted. In addition, the encoder requires less axial installation space. It can be advantageous if the first leg and / or the fold is surface treated in the region of the contact surface or sliding surface of the sealing element before or after the fold is formed by forming, in order to reduce the friction between the carrier plate ring of the encoder and the sealing element and to enhance the sealing effect.

[0014] Therefore, the radially extending first leg and / or the folded portion is at least partially surface treated. The surface treatment particularly comprises reducing the surface roughness.

[0015] According to an exemplary embodiment, a fold is formed on the radially extending first leg in the region of the cutout. By turning over or folding the radially extending first leg in the region of the cutout, a toothed structure is initially formed on the outer circumference of the carrier plate ring, wherein the inter-tooth spaces are formed by the cutout and the teeth are formed by the radial first leg, the fold and the folded portion abutting the first leg. The radial position of the fold is selected such that the folded portion of the carrier plate ring at least partially covers the portion of the cutout on the radially extending first leg. In other words, the fold always forms the radially outermost point of the carrier plate ring.

[0016] Alternatively, the fold formed on the radially extending first leg is formed on the side of the cut-out facing away from the axially extending second leg. In other words, the radial position of the fold is selected so that the radial section of the carrier plate ring at least partially covers the cut-out located on the radial first leg. In other words, after the radial leg is formed, a part of the cut-out remains as a through opening, wherein the size of the opening depends on the radial position of the fold. After the manufacturing step of the encoding ring, the material of the encoding ring at least partially fills the opening. In this case, the radial outer diameter of the carrier plate ring is larger than the radial outer diameter in the alternative case in which the fold is formed on the radially extending first leg in the region of the cut-out.

[0017] Preferably, the encoder ring has an axially extending leg. The axially extending leg is integrally connected to the material of the encoder ring, which is at least partially engaged in the cutout and is radially spaced apart and approximately parallel to the axially extending second leg of the carrier plate ring. In addition, the axially extending leg of the encoder ring can be oriented in the same direction as the axially extending second leg of the carrier plate ring, so that the encoder has a generally C-shaped structure. The axial leg of the encoder ring is formed to combine with the sealing element to form a labyrinth chamber in particular. A so-called pre-sealed labyrinth is thus formed, which increases the service life of the sealing element arranged in the wheel bearing.

[0018] According to another embodiment of the invention, an encoder comprises a carrier plate ring having a radially extending first leg and an axially extending second leg, the axially extending second leg of the carrier plate ring being arranged on the outer ring or the inner ring of the wheel bearing, the carrier plate ring being at least partially surrounded by a magnetic encoding ring, wherein the radially extending first leg of the carrier plate ring is fastened with a window plate ring having cutouts distributed on the circumference, wherein the encoding ring is monopolarly magnetized and at least partially in contact with the cutouts of the window plate ring. In other words, the carrier plate ring and the window plate ring are at least partially wrapped or overmolded by the material of the magnetic encoding ring. Preferably, the encoding ring is bonded to the carrier plate ring and the window plate ring by means of a chemical bonding system, for example by means of vulcanization. Thus, the encoding ring is at least partially connected to the carrier plate ring and the window plate ring in terms of material by material bonding. Thus, the window plate ring is connected to the carrier plate ring in a fixed manner, i.e. axially fixed and non-rotatably, via the material of the encoding ring, the material of the encoding ring being at least partially engaged in the cutouts of the window plate ring.

[0019] The difference to the previously described embodiment according to the first aspect of the invention is essentially that the carrier plate ring comprises at least one radially extending first leg and an axially extending second leg, wherein in this case the folding of the radial first leg and the stamping of the carrier plate ring can be omitted. However, the stamped window plate ring is arranged in a non-rotatable manner on the radial leg, which receives the material of the encoding ring, which according to the previously described embodiment is also in contact with the carrier plate ring and connected to it. This further simplifies the manufacture of the carrier plate ring, since in this case no folding is required.

[0020] Preferably, the carrier plate ring has an axially extending third leg. The axially extending third leg of the carrier plate ring is integrally connected to the first leg and the second leg and is radially spaced apart, i.e. arranged substantially parallel to the axially extending second leg of the carrier plate ring. In addition, the axially extending third leg of the carrier plate ring can be positioned in the same direction as the axially extending second leg of the carrier plate ring, so that the carrier plate ring has a generally C-shaped structure. The axially extending third leg of the carrier plate ring is formed to be combined with the sealing element to form a labyrinth chamber in particular. A so-called pre-sealed labyrinth is thus formed, which increases the service life of the sealing element arranged in the wheel bearing.

[0021] Preferably, the window plate ring is arranged on the side of the radial first leg facing away from the sealing element, so that an uninterrupted sealing surface for the sealing lip of the sealing element is provided by the radial leg of the carrier plate ring and the window plate ring is therefore positioned on the rear side of the radially extending first leg.

[0022] The wheel bearing according to the invention comprises an encoder of one of the above-mentioned types, wherein the encoder is arranged in a non-rotatable manner on the outer peripheral surface of the inner ring or on the inner peripheral surface of the outer ring. It is conceivable that the encoder ring and / or the carrier plate ring are at least partially in contact with the end face of the inner ring or the outer ring and / or are at least partially received in a recess or depression of the corresponding component. In addition, such an encoder can also be arranged for alternative bearing elements, wherein a displaceable or rotatable component on which the encoder ring is arranged can be displaced or rotated relative to a stationary fixed component. In particular, it is conceivable that the encoder is arranged for use in a linear bearing.

[0023] The encoder ring can be magnetized before being mounted on the inner or outer ring. Alternatively, due to the relatively simple magnetization capability of the encoder ring, it is also conceivable to carry out a unipolar magnetization after the encoder has been mounted in the wheel bearing. In this case, no dirt can accumulate before the magnetization, which could have a negative effect on the magnetization. Overall, the unipolar magnetization of the encoder ring has a relatively low attraction for ferromagnetic (dirt) particles or contaminants.

[0024] The above definitions and descriptions of the technical effects, advantages and advantageous embodiments of the corresponding encoder also apply to the wheel bearing with necessary modifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Further measures for improving the invention are described below using the drawings together with three preferred exemplary embodiments of the invention, wherein identical or similar elements are identified with the same reference numerals. In the drawings:

[0026] Figure 1 shows a schematic cross-sectional view illustrating the structure of a partially shown wheel bearing according to the invention having an encoder according to the invention according to a first embodiment,

[0027] Figure 2a shows a schematic perspective view of an encoder according to a second embodiment,

[0028] Figure 2b Shown according to Figure 2a A schematic cross-sectional view of an encoder,

[0029] Figure 2c Shown according to Figure 2a and Figure 2b A cross-sectional perspective view of the encoder,

[0030] Figure 2d According to Figures 2 to 3 and Figure 2c Another cross-sectional perspective view of the encoder,

[0031] Figure 3a Shown according to Figure 1A schematic perspective view of a portion of an encoder is shown,

[0032] Figure 3b Shown according to Figure 1 and Figure 3a A schematic cross-sectional view of an encoder,

[0033] Figure 3c Shown according to Figure 1 , Figure 3a and Figure 3b Another schematic cross-sectional view of an encoder of

[0034] Figure 3d Shown according to Figure 1 and Figure 3a to Figure 3c A cross-sectional perspective view of the encoder,

[0035] Figure 3e Shown according to Figure 1 and Figure 3a to Figure 3d Another cross-sectional perspective view of the encoder, and

[0036] Figure 4 A schematic cross-sectional view of an encoder according to a third embodiment of the invention is shown. DETAILED DESCRIPTION

[0037] according to Figure 1 According to the invention, a wheel bearing 1 for a vehicle not shown here has an encoder 2, wherein according to the invention, the encoder 2 is arranged in a non-rotatable and axially fixed manner on the outer circumferential surface 5 of an inner ring 3b of the wheel bearing 1 designed as an angular contact ball bearing. In particular, the encoder 2 comprises a substantially L-shaped carrier plate ring 4 and a magnetized encoding ring 7 which is partially arranged on the carrier plate ring by overmolding, wherein the encoder 2 interacts with a sensor device 8, for example for speed measurement.

[0038] The carrier plate ring 4 has a radially extending first leg 4a and an axially extending second leg 4b, wherein the axial second leg 4b is arranged in a non-rotatable and axially fixed manner on the inner ring 3b of the wheel bearing 1. The radial first leg 4a extends in the radial direction towards the outer ring 3a and is folded at the fold 15, so that the folded portion 4d of the first leg 4a extends in the opposite radial direction towards the inner ring 3b and axially abuts the radial first leg 4a. Therefore, the folded portion 4d is arranged parallel to the first leg 4a. In the present case, the folded portion 4d is arranged on the side of the radially extending first leg 4a facing the axially extending second leg 4b.

[0039] The carrier plate ring 4 has cutouts 10 distributed around the circumference on the radially extending first leg 4a, which results in different designs of the carrier plate ring 4 depending on the radial position of the folds 15. The folds 15 are realized after punching the cutouts 10. Figure 1 to Figure 3e In the embodiment of the present invention, the radial position of the folded portion 15 is arranged so that the folded portion 4d of the first leg 4a at least partially covers the cutout 10. The folded portion 4d of the radially extending first leg 4a is particularly designed to form an opposing face of the substantially axially extending sealing lip 11 of the sealing element 9. In addition, the further sealing lip 14 can be in radial contact with the axially extending second leg 4b to form a seal, as respectively at Figure 3b and Figure 3c Of course, the design of the sealing element 9 can be easily transferred to all embodiments.

[0040] The encoding ring 7 is formed over the entire circumference of the first leg 4a of the carrier plate ring 4. The encoding ring 7 is monopolarly magnetized before or after it is installed in the wheel bearing 1 and at least partially contacts in the cutout 10 of the carrier plate ring 4. The material of the encoding ring 7 thus at least partially fills the space of the cutout 10, wherein the encoding ring 7 bears on the corresponding wall of the cutout 10.

[0041] according to Figure 2a to Figure 2d According to the second embodiment, the fold 15 is formed on the side of the cutout 10 facing away from the axially extending second leg 4b. In other words, the fold 15 is formed radially outside the cutout 10, wherein the fold 4d only partially covers the cutout 10, i.e. does not completely cover the cutout. The cutout 10 is thus spatially connected to the space between the tip of the fold 4d and the axially extending second leg 4b, wherein this space as well as the space of the cutout 10 is completely filled with the material of the encoding ring 7. The fold 15 always forms the radially outermost point of the carrier plate ring 4.

[0042] Figure 2c and Figure 2d Different cross sections of the encoder 7 are shown, wherein it is intended to show here that the material of the encoder ring 7 extends over the entire circumference of the axial leg side or sealing element side of the carrier plate ring 4, wherein the material of the encoder ring 7 engages in the cutout 10 in the region of the cutout 10 and completely fills the cutout. The encoder ring 7 is therefore in contact with the cutout 10. On the one hand, this prevents relative movement between the carrier plate ring 4 and the encoder ring 7. On the other hand, the encoder ring 7 has magnetized layers of different material thicknesses, wherein alternating magnetic fields with the same polarity are thus formed on the surface of the magnetized layers. Depending on the requirements, the cutouts 10 can be distributed uniformly or non-uniformly around the circumference of the carrier plate ring 4. Furthermore, the cutouts 10 can be approximately rectangular in shape or approximately circular in shape. Furthermore, the longer sides of the cutouts 10 can extend essentially radially.

[0043] according to Figures 3a to 3e Still there Figure 1 The first embodiment of the encoder 2 shown in FIG. Figure 2d The only difference of the second embodiment of the invention is that a fold 15 is formed on the radially extending first leg 4a in the region of the cutout 10. The carrier plate ring 4 thus has a toothed structure on its outer peripheral surface, with which the material of the encoder ring comes into contact. The fold 15 always forms the radially outermost point of the carrier plate ring 4. The radial position of the fold 15 is chosen so that the folded portion 4d of the carrier plate ring 4 partially covers the portion of the cutout 10 on the radially extending first leg 4a.

[0044] Furthermore, the encoder ring 7 has an axially extending leg 7a. The axially extending leg 7a is integrally formed on the material of the encoder ring 7 received in the cutout 10 and is radially spaced apart and approximately parallel to the axially extending second leg 4b of the carrier plate ring 4. Furthermore, the axially extending leg 7a of the encoder ring 7 is aligned in the same direction as the axially extending second leg 4b of the carrier plate ring 4, so that the encoder 2 has an approximately C-shaped structure. A pre-sealing labyrinth is formed by the axial leg 7a of the encoder ring 7, so that dirt and / or moisture are more difficult or delayed to enter the sealing element 9 and thus in particular the service life of the sealing element 9 is increased.

[0045] As already pointed out, Figure 3b and Figure 3c A sealing element 9 is shown in each case, which in both cases is in contact via a sealing lip 14 with the axially extending second leg 4b to form a seal. Figure 3b The sealing element 9 shown in FIG. 1 also has a sealing lip 11 which contacts the folded portion 4d in a substantially axially sealing manner. The folded portion may be surface treated in the area in contact with the sealing lip 11 to increase the service life of the sealing element 9. The sealing element 9 is arranged in a non-rotatable and axially fixed manner. Figure 1 On the outer ring 3b shown in FIG.

[0046] Replace the sealing lip 11, such as Figure 3c The sealing element 9 shown in FIG. 4 has a cavity 6 to capture dirt and / or moisture and prevent it from reaching the contact surface between the carrier plate ring 4 and the sealing lip 14 .

[0047] Figure 3d and Figure 3eDifferent cross sections through the encoder 7 are shown, wherein the purpose here is to show that the material of the encoder ring 7 extends over the entire circumference of the carrier plate ring 4 on the axial leg side or sealing element side of the axial leg 7a of the encoder ring 7, wherein the material of the encoder ring 7 engages in the cutout 10 in the region of the cutout 10 and completely fills the cutout. The encoder ring 7 is thus in contact with the cutout 10. On the one hand, this prevents a relative movement between the carrier plate ring 4 and the encoder ring 7. On the other hand, the encoder ring 7 has magnetized layers of different material thicknesses, wherein an alternating magnetic field with the same polarity is thus formed on the surface of the magnetized layers.

[0048] according to Figure 4 According to a third exemplary embodiment, the encoder 2 comprises a carrier plate ring 4 having a radially extending first leg 4a, an axially extending second leg 4b and an axially extending third leg 4c. The two axially extending legs 4b, 4c are radially spaced apart and point in the same direction, so that the encoder is formed substantially in a C-shape. The axially extending second leg 4b of the carrier plate ring 4 is arranged on the inner ring 3b of the wheel bearing 1, similar to the previous embodiment, and the carrier plate ring is partially surrounded by a magnetic encoding ring 7 on the end face 12 in the region of the radially extending first leg 4a. The radially extending first leg 4a of the carrier plate ring 4 is also fastened with a window-shaped plate ring 13, wherein the window-shaped plate ring has cutouts 10 distributed on its circumference, and the window-shaped plate ring is connected to the carrier plate ring 4 in a non-rotatable manner via the material of the encoding ring 7. The encoding ring 7 is monopolarly magnetized and is in contact with the cutouts 10 of the window-shaped plate ring 13. Furthermore, the material of the encoder ring 7 is guided to achieve an interference fit between the inner ring 3b and the axially extending third leg 4c to improve the static sealing effect. This can be similarly transferred to the aforementioned embodiment.

[0049] In this case, according to the second exemplary embodiment, the task of the axial leg 7 a of the encoder ring 7 is taken over by the axially extending third leg 4 c , wherein a sealing lip not shown here can come into contact in a sealing manner with the radially extending first leg 4 a .

[0050] For all embodiments, it is also conceivable that the carrier plate ring 4 is arranged in a non-rotatable and axially fixed manner. Figure 1 In this case, the sealing element 9 is arranged in a non-rotatable and axially fixed manner on the outer ring 3a. Figure 1 On the inner ring 3a shown in FIG.

[0051] Description of Reference Numerals

[0052] 1 Wheel bearing 2 Encoder 3a Outer ring 3b Inner ring 4 Carrier plate ring 4a First leg of carrier plate ring 4b Second leg of carrier plate ring 4c Third leg of carrier plate ring 4d Folded portion of carrier plate ring 5 Outer peripheral surface 6 Concave cavity 7 Encoder ring 7a Axial leg of encoder ring 8 Sensor device 9 Sealing element 10 Cutout 11 Sealing lip 12 End face 13 Window plate ring 14 Second sealing lip 15 Folded portion.

Claims

1. An encoder (2) for a wheel bearing (1), the encoder comprising a carrier plate ring (4) having a radially extending first leg (4a) and an axially extending second leg (4b), the axially extending second leg (4b) of the carrier plate ring (4) being arranged on an outer ring (3a) or an inner ring (3b) of the wheel bearing (1), the carrier plate ring (4) being at least partially surrounded by a magnetic encoding ring (7), the carrier plate ring (4) having circumferentially distributed cutouts (10) on the radially extending first leg (4a), wherein: The first leg (4a) has a folded portion (15) for forming a folded portion (4d), wherein the folded portion (4d) of the first leg (4a) at least partially covers the cutout (10), wherein the magnetic encoding ring (7) is monopolarly magnetized and at least partially contacts the cutout (10), characterized in that the folded portion (15) is formed on the radially extending first leg (4a) in the area of ​​the cutout (10), the carrier plate ring (4) has a toothed structure on its outer peripheral surface, the inter-tooth space is formed by the cutout (10) and the teeth are formed by the radial first leg (4a).

2. The encoder (2) according to claim 1, It is characterized in that The folded portion (4d) of the radially extending first leg (4a) is configured to form an opposing surface of a sealing lip (11) of a sealing element (9).

3. The encoder (2) according to claim 1 or 2, It is characterized in that The magnetic encoding ring (7) is arranged on the entire circumference of the carrier plate ring (4).

4. The encoder (2) according to claim 1 or 2, It is characterized in that The first radially extending leg (4a) and / or the folded portion (4d) are at least partially surface treated.

5. The encoder (2) according to claim 1 or 2, It is characterized in that The magnetic encoding ring (7) has an axially extending leg portion (7a).

6. An encoder (2) for a wheel bearing (1), comprising a carrier plate ring (4) having a radially extending first leg (4a) and an axially extending second leg (4b), the axially extending second leg (4b) of the carrier plate ring (4) being arranged on an outer ring (3a) or an inner ring (3b) of the wheel bearing (1), the carrier plate ring (4) being at least partially surrounded by a magnetic encoding ring (7), It is characterized in that The radially extending first leg (4a) of the carrier plate ring (4) is fastened with a window-shaped plate ring (13), the window-shaped plate ring having cutouts (10) distributed on the circumference, wherein the magnetic encoding ring (7) is monopolarly magnetized and at least partially contacts the cutouts (10) of the window-shaped plate ring (13).

7. The encoder (2) according to claim 6, It is characterized in that The carrier plate ring (4) has an axially extending third leg (4c).

8. A wheel bearing (1) comprising an encoder (2) according to any one of claims 1 to 5 or an encoder (2) according to any one of claims 6 or 7, wherein: The encoder (2) is arranged in a non-rotatable manner on the outer peripheral surface of the inner ring (3b) or the inner peripheral surface of the outer ring (3a).

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