Polar rings for wheel hub assemblies and ABS sensors for vehicle wheels

Abstract

The present invention relates to a hub assembly for a vehicle wheel having a hub rotatably arranged on an axle element via a hub bearing, the hub ending in a hub neck on the inner side of the vehicle, the inner circumference of the hub neck defining an opening for a central channel for the axle element, and a fastening section (7) on the outer circumference of the hub neck on which an ABS sensor pole ring (8) is mounted. A pulse generator section (10) extends from the fastening section toward the hub axis (A). The hub neck is provided with: a pole ring seat (12) extending coaxially to the hub axis (A), on which the fastening section is radially supported with its inner side; and a tool engagement region (13) guided around the hub neck and descending relative to the pole ring seat toward the hub axis. The fastening section has recesses (14) distributed on the circumference of the fastening section and having a non-uniform axial distance from the pulse generator section, wherein the recess axially closest to the pulse generator section at least partially radially covers the tool engagement region.

Description

Technical Field

[0001] The present invention relates to a hub assembly for a vehicle wheel having a hub rotatably arranged on an axle element via a hub bearing, the hub ending in a hub neck on the inner side of the vehicle, the inner circumference of the hub neck defining an opening for a central channel for the axle element, and a fastening section for an ABS sensor pole ring mounted on the outer circumference of the hub neck, wherein a component of the pole ring is a pulse generator section integrally formed with the fastening section, the pulse generator section extending from the fastening section toward the hub axis. Background Technology

[0002] A general-purpose wheel hub assembly with a polar ring is known from DE102011084261A1. The wheel hub is rotatably mounted on an anti-rotational shaft element via a hub bearing and terminates in a hub neck on the vehicle side. The inner circumference of the hub neck defines an opening for a central channel of the shaft element on which the wheel hub is rotatably supported. The outer circumference of the hub neck forms a polar ring for securing an ABS sensor. For this purpose, the polar ring is provided with a fastening section that is supported on or clamped thereon on the outer circumference of the hub neck. Furthermore, a component of the polar ring is a pulse generator section integral with the fastening section, which extends from the fastening section toward the central axis of the wheel hub. On the pulse generator section, the polar ring is provided with slots evenly distributed circumferentially. The ABS sensor is so tightly fixed in the area of ​​the shaft element that it is directly opposite the slot, and thus senses the rotational speed of the polar ring and converts it into a corresponding control signal for the anti-lock braking system of the vehicle's brakes, or, in the case of driving the vehicle's axle, into a control signal for the drive anti-slip adjustment device.

[0003] A similarly constructed assembly consisting of a hub and a pole ring fastened thereto is known, for example, from DE102014106519A1.

[0004] A common feature of existing wheel hub assemblies is that the hub neck has a pole ring seat, onto which the pole ring is pressed during axial movement by a corresponding device. Therefore, the pole ring is held on the hub neck only by frictional engagement. When disassembling the wheel hub assembly and subsequently removing the pole ring from the hub neck, a suitable device is needed to achieve non-destructive removal of the pole ring. For example, a pull-out device specifically designed for this purpose can be axially mounted on the end side of the fastening section or on the inner flange of the pole ring, thereby pulling the pole ring out of the hub. Summary of the Invention

[0005] The purpose of this invention is to provide a simplified and non-destructive solution for the disassembly of polar rings without the use of special tools.

[0006] For this solution, on the one hand, a hub assembly including a pole ring with the features of claim 1 is proposed, and on the other hand, a pole ring with the features of claim 10 is proposed.

[0007] The wheel hub assembly is characterized in that the wheel hub neck has the following on its outer circumference:

[0008] - A pole ring seat extending coaxially with the hub axis, with a fastening section radially supported on the pole ring seat by its inner side; and

[0009] -The tool engagement area that guides the wheel hub neck and descends relative to the pole ring seat toward the wheel hub axis;

[0010] Furthermore, the fastening section has recesses distributed around the circumference of the fastening section and having non-uniform axial distances from the pulse generator section, wherein the recesses axially closest to the pulse generator section at least partially radially cover the tool engagement area.

[0011] The polar ring is characterized in that the fastening section has recesses that are distributed on the circumference of the fastening section and have non-uniform axial distances from the pulse generator section, wherein the recesses are configured as slots extending in the circumferential direction.

[0012] Using the hub assembly according to the invention, a simplified and non-destructive removal of the pole ring from the hub neck is achieved. Since the recess at least partially covers the tool engagement area, a standard tool, such as a slotted screwdriver, can be guided axially through the recess closest to the pulse generator section and the tool tip is stopped in the tool engagement area, with the tool shank abutting against the recess. By levering the tool, the pole ring can then be pressed downwards from the pole ring seat. The recesses, offset on the circumference of the fastening section, have a non-uniform axial distance from the pulse generator section, so that when the lever travel from the recess to the tool engagement area is exhausted by the axial displacement of the pole ring on the hub neck, at least one additional recess is optimally positioned above the tool engagement area. Therefore, this next recess now at least partially radially covers the tool engagement area, where the lever tool is now inserted, and the lever process is repeated. Thus, a corresponding number of recesses are formed in the fastening section, making complete disengagement of the pole ring from the hub neck possible.

[0013] Preferably, each recess has a recess opposite to the axis of the polar ring, wherein the pairs of recesses have non-uniform axial distances from each other from the pulse generator section.

[0014] In a preferred embodiment, two recesses forming a pair are arranged opposite each other relative to the pole ring axis and have the same axial distance from the pulse generator section, wherein this axial distance is less than the axial distance of other recesses. In other words, two recesses with the same axial position are also formed opposite each other on the circumferential surface of the fastening section relative to the pole ring axis. In this embodiment, lever tools can be used on both sides respectively, wherein the risk of the pole ring on the hub neck tilting relative to a lever on only one side is reduced by the synchronous operation of the two tools.

[0015] Preferably, there are two additional recesses that also form a pair of opposite recesses and have a small axial distance from the pulse generator section, wherein the recesses in the two pairs of recesses are arranged about the pole ring axis at an angular distance of 90° from each other. Thus, the recesses are arranged on the circumference of the fastening section at the same angular distance from each other. If the number of recess pairs increases with the small axial distance from the pulse generator section, the distribution of the recess pairs is adapted accordingly to maintain a uniform arrangement of the recesses. However, it is also conceivable that the recess pairs are distributed along the fastening section at different angular distances.

[0016] It is also possible that other recesses with a large axial distance from the pulse generator section may also be configured as multiple pairs, either alternatively or additionally.

[0017] Preferably, between two pairs of recesses having the same and small axial distance from the pulse generator section, other pairs of recesses having a larger axial distance from the pulse generator section are arranged. These pairs of recesses are also distributed along the fastening section at a uniform angular distance. However, it is also conceivable that the pairs of recesses are distributed at non-uniform angular distances.

[0018] Preferably, the tool engagement area is configured as a step at the vehicle-side end of the hub neck. In other words, the hub in the region of the pole ring seat is a rotationally symmetric member having a cylindrical outer surface with a shoulder connecting to the vehicle interior, i.e., a circumferential surface with a decreasing radius.

[0019] Alternatively, the tool engagement area is configured as a circumferential groove in the region of the polar ring seat. In this case, the tool engagement area is located on the cylindrical outer surface of the polar ring seat, but instead of serving as a shoulder, it serves as a circumferential groove that divides the polar ring seat into two cylindrical longitudinal segments.

[0020] The tool engagement area is configured to house the tip or end of a standard tool used as a lever and to act as a fixed point for lever movement, with the aim of pushing the clamped pole ring downwards away from the hub neck without damage.

[0021] To facilitate removal or replacement of the pole ring from the hub, recesses with a small axial distance from the pulse generator section have a profile different from all other recesses. These recesses are closest to the tool engagement area when the pole ring is installed, wherein these recesses partially cover the tool engagement area. These recesses serve as the first engagement area for the lever tool, so as to support the lever tool on the abutment surface of the hub neck.

[0022] Based on the different contours of the recesses with small axial distances from the pulse generator section, installers can immediately see which recesses the two lever tools must first be inserted into, thus saving time-consuming trial and error or searching.

[0023] Preferably, the recesses having a small axial distance from the pulse generator section are alternatively or additionally marked. These markings are different from any markings on all other recesses. In other words, the recesses may be marked so that the installer can directly see the order in which one or more lever tools are inserted into the different recesses. For example, these markings may be Arabic or Latin numerals or alphabetical order.

[0024] Preferably, the pole ring is axially pressed onto the pole ring seat of the hub and held there solely by friction engagement. Preferably, the pole ring seat and the tool engagement area are machined and provided with a rust-resistant layer. Since both dust and moisture reach the area of ​​the pole ring seat during driving, it is proposed to apply a rust-resistant layer at least to the pole ring seat to improve the durability of the hub and prevent the pole ring on the hub from firmly rusting, which would make disassembly difficult.

[0025] Preferably, the pole ring is a stamped and bent piece made of sheet metal, wherein, preferably, the stamped recess has an outwardly oriented folded edge along its contour. In other words, the folded edge formed on the recess by stamping is formed on the side of the fastening section opposite to the abutment surface. The manufacture of pole rings made of sheet metal not only has the advantage of high cost-effectiveness, but the pole ring is also relatively flexible and therefore suitable for corresponding press fits. Therefore, extensive processing beyond the above-described steps is not required on the pole ring seat. Furthermore, it is advantageous that the folded edge formed during stamping is opposite to the abutment surface of the pole ring seat to facilitate sliding of the pole ring when it is installed on or removed from the hub. Thus, damage to rust protection by sharp folded edges is avoided.

[0026] In another design, the pole ring's axial support is provided only on the end face formed between the inner and outer circumferences of the hub neck. Furthermore, for high mechanical strength, the pulse generator section has a reinforcing flange at its inner edge. In addition to the remaining opening width of the pole ring relative to the shaft element, which is no longer passable for coarser particles, the flange is also configured as a contact surface for special tools, allowing for disassembly in a conventional manner.

[0027] Preferably, the pulse generator section is provided with openings, preferably slots, evenly distributed along the circumferential direction, wherein at least some of the openings or slots have outward extensions that extend at least to the radius of the inner circumference of the hub neck.

[0028] Particularly preferably, the opening, preferably the slot, has a different radial extension, wherein the extension is required for sensing by the ABS sensor, and the outward extension is between 2 mm and 10 mm larger than the extension required for sensing by the ABS sensor.

[0029] Wastewater or even small particles that have intruded into the area behind the pole ring can escape again through outward-extending openings or slits, even if the relevant circumferential section of the pole ring or hub is located below. Attached Figure Description

[0030] The following description, based on the accompanying drawings and in conjunction with preferred embodiments, illustrates further measures in more detail. In the drawings:

[0031] Figure 1 A cross-sectional view of a hub rotatably supported on a central shaft element is shown, the hub having a pole ring fastened thereto, where an ABS sensor is also presented;

[0032] Figure 1a It shows according to Figure 1 A magnified view of a portion of the object in the hub neck region of the wheel hub;

[0033] Figure 2 A perspective view of the polar ring according to the first embodiment is shown;

[0034] Figure 3 A perspective view of the polar ring according to the second embodiment is shown;

[0035] Figure 4 A strongly schematic side view of the hub neck alone is shown, with the hub having such a tightly pressed pole ring to illustrate the interaction between the recess and the tool engagement area arranged below it;

[0036] Figure 5A schematic cross-sectional view of a wheel hub is shown, featuring a clamped pole ring and a stop lever mechanism to illustrate the lever mechanism; and

[0037] Figure 6 A perspective view of the polar ring according to the third embodiment is shown. Detailed Implementation

[0038] Figure 1 and Figure 1a A cross-sectional view of a wheel hub assembly in an installed state is shown. The wheel hub assembly has a wheel hub 2 rotatably arranged on a shaft element 1 via a wheel hub bearing, wherein... Figure 1a It shows according to Figure 1 The image shows a partial enlarged view of the object in the region of the hub neck 3 of the hub 2. Two such axle elements 1 are preferably located at the ends of an extended axle extending from one vehicle side to the other vehicle side, such as an axle of a commercial vehicle.

[0039] Furthermore, the shaft element 1 is designed to taper outwards towards the outside of the vehicle, and bearing housings for inner rolling bearings 20a and outer rolling bearings 20b are formed on this shaft element. The wheel hub 2, and thus the corresponding vehicle wheel, is rotatably supported on rolling bearings arranged inside the wheel hub.

[0040] On the outer flange 21 of the hub 2, a brake disc 22 can be fastened to one side by means of wheel bolts 23, and a vehicle wheel (not shown) can be fastened to the opposite side. For this purpose, fasteners with holes through which the wheel bolts 23 are inserted are located in the flange 21 of the hub 2. This wheel fastening and wheel support is particularly suitable for non-drive vehicle axles, such as the synchronous axles of truck trailers.

[0041] The shaft element 1 has a step on the inner side of the inner rolling bearing 20a. The inner ring of the rolling bearing 20a is supported against the step below the axial intermediate layer of the ring 24. The ring 24 is fixedly formed due to its support against the shaft element. The outer edge of the ring 24 has a small radial distance relative to the inner circumference 4 of the hub 2.

[0042] Furthermore, on the inner side of the vehicle, a circumferential groove is formed on the inner circumference 4 of the wheel hub 2, and a retaining ring 25 is inserted into the circumferential groove. The retaining ring 25 forms a radial protrusion compared to the inner circumference 4 of the wheel hub 2, and the wheel hub 2, including the wheel hub bearing, can be pulled outward and downward from the shaft element 1 as a whole by means of the radial protrusion.

[0043] On the inner side of the vehicle, i.e., towards the vehicle center, the rolling bearings 20a and 20b are sealed by a seal 26 disposed in an extension of the rolling bearing 20a. The seal 26 includes the previously mentioned rigid ring 24 and also includes a two-piece assembly consisting of an inner ring and an outer ring. The inner and outer rings are arranged opposite each other such that they are nested in the axial direction.

[0044] The inner rolling bearing 20a and the outer rolling bearing 20b, together with the seal 26 consisting of a ring 24, an inner ring, and an outer ring, form the hub bearing of the hub 2. A characteristic of this hub bearing is that it can be pulled out from the shaft element 1 towards the outside of the vehicle, together with the hub 2 and the rolling bearings 20a and 20b. The basic principle for this is described in EP0407719B1. During pull-out, the seal 26 of the hub bearing is rear-engaged by a retaining ring 25 fixed to the inside of the hub 2 and serving as a radial protrusion. This is possible because the outer diameter of the seal 26 is larger than the inner diameter of the retaining ring 25. When the hub 2 is pulled out, the retaining ring 25 abuts against the outer ring, which in turn transmits the pulling force axially to the ring 24, thereby transmitting the axial force to the rolling bearing 20a, and all these components are actuated. If the hub 2 is pulled out from the shaft element 1, then all parts of the hub bearing, namely the rolling bearings 20a and 20b, the ring 24 and the multi-piece seal 26, can be pulled out from the hub 2 after the retaining ring 25 is released.

[0045] As a component of the electrical device used for speed and / or direction of rotation identification, an ABS sensor, for example, is secured to the shaft element 1. The ABS sensor 6 is relatively tightly seated in a mounting sleeve 27 surrounding the sensor, which is in turn rigidly secured to or within the shaft element 1.

[0046] On the wheel hub 1, a pole ring 8 is mounted directly opposite the ABS sensor 6 at a very short distance. That is, the pole ring 8 rotates with the wheel hub 1 and is part of both the sensor assembly and the wheel hub assembly. The pole ring 8 is, for example, a stamped and bent piece made of sheet metal.

[0047] In order to install the pole ring 8, the hub 2 has a hub neck 3 on the inside of the vehicle with a smaller radius compared to the hub portion on the wheel side.

[0048] Figure 1a More precisely, the hub neck 3 defines an opening 5 for a central channel of the shaft element 1 with its inner circumference 4, wherein the outer circumference 11 of the hub neck 3 forms a pole ring seat 12 for receiving the fastening section 7 of the pole ring 8. The pole ring 8 is pressed against the pole ring seat 12 by axial pushing and is held there only by frictional engagement.

[0049] Another component of the pole ring 8 is a pulse generator section 10 integrally formed with the fastening section 7, which extends radially from the fastening section 7 toward the hub axis A. The pulse generator section 10 has a flange 18 at its radially inner edge, which reinforces the pole ring 8 against bending loads, which is advantageous for the installation and removal of the hub assembly.

[0050] The axial support of the pole ring 8 occurs only on the end face 17 of the hub neck 3, preferably formed by machining between the inner circumference 4 and the pole ring seat 12. This results in very precise axial runout of the pole ring 8, and thus generates accurate sensor signals. Furthermore, this location of the axial support leads to increased strength of the pole ring 8, as this location allows it to better absorb or withstand bending loads during installation and removal.

[0051] The hub neck 3 has a length such that it accommodates at least the portion of a multi-piece hub bearing, namely the seal 26, the ring 24, and possibly the inner rolling bearing 20a, on its inner side. To keep the axial length of the hub neck 3, and therefore the total axial length of the hub 2, small, the pole ring 8 is not fastened to the inner circumference 4 of the hub neck 3, where the hub bearing and retaining ring 25 are already arranged and occupy space accordingly. Instead, the pole ring 8 is fastened to the outer circumference 11 of the hub neck 3. In this case, viewed in the longitudinal direction of the hub, the fastening section 7 extends upwards to the seal 26 beyond the hub bearing.

[0052] The hub neck 3 has a tool engagement region 13 on its outer circumference 11, which guides around the hub neck 3 and descends relative to the pole ring seat 12 toward the hub axis A. In particular, the tool engagement region 13 is configured as a step at the vehicle side end of the hub neck 3 in the region of the pole ring seat 12. In other words, the outer radius of the hub neck 3 decreases by a certain value from the pole ring seat 12 to the tool engagement region 13.

[0053] Furthermore, though not shown, the tool engagement area 13 may also be configured as a circumferential groove in the axial region of the polar ring seat 12, wherein only a chamfer is formed on the vehicle side end.

[0054] The polar ring seat 12 and the tool engagement area 13 are machined and have a rust-proof layer because both areas are exposed to environmental influences, especially moisture.

[0055] exist Figure 2 and Figure 3 Only the pole ring 8 of the wheel hub assembly is shown in the diagram. Figure 2 The first embodiment of the polar ring 8 is proposed, and in Figure 3 A second embodiment of the polar ring 8 is proposed. According to these two figures, the pulse generator section 10 is provided with openings, preferably slots 19, 19L, evenly distributed along the circumferential direction. Some of the openings or slots 19, 19L have at least one outward extension RL, which extends at least to the radius of the inner circumference 4 of the hub neck 3. Here, the extension R is the extension required for sensing by the ABS sensor, and the outward extension RL is larger than the extension R by between 2 mm and 10 mm.

[0056] The longer openings or slots 19L have such outward radial extensions RL that these openings or slots 19L reach up to the maximum radius of the tool engagement area 13 formed on the end side or up to the end side chamfer (not shown). Wastewater and smaller particles of dirt accumulated inside the hub will therefore escape again through the outwardly extended sections of the openings or slots 19L in any case, benefiting from centrifugal force during driving operations.

[0057] On the other hand, in order to maintain the highest possible mechanical strength for the pole ring 8, all other openings or slots 19 have only a length and, in particular, an outward extension R, which is no greater than the length and extension technically required for reliable sensing by the sensor 6. Significant drainage inside the hub is not achieved through shorter openings or slots 19.

[0058] Both embodiments have recesses 14 in the form of radial slots on their fastening section 7. These recesses 14 are distributed around the circumference of the fastening section 7 and have non-uniform axial distances from the pulse generator section 10. According to Figure 2 and Figure 3 Six recesses 14 are formed on the polar ring 8, and the number of these recesses can be higher or lower depending on the application. Furthermore, the radial distance between the recesses 14 is the same.

[0059] A perspective view of the polar ring 8 according to the first embodiment is presented. Figure 2 The recesses 14 are all configured in pairs, wherein each recess 14 has a recess 14 opposite to its polar ring axis A. The pairs of recesses have non-uniform axial distances from each other from the pulse generator section 10. One pair is configured at the lower edge of the fastening section 7 facing the flange 21, the second pair is configured opposite at the upper edge facing the pulse generator section 10, and the third pair is configured in a manner placed between them.

[0060] according to Figure 3 The recess 14 in the second embodiment shows a similarity to Figure 2 The distribution of different recesses 14. In this embodiment, all recesses 14 are distributed on the outer circumferential surface of the fastening section 7 at their own axial distances. Thus, six recesses 14 are created, each having its own axial position between its upper and lower edges. Here, the recesses 14 are arranged relative to each other such that adjacent recesses 14 have the minimum axial distance from the central recess 14. Therefore, the spiral shape used to arrange the recesses 14 on the fastening section 7 can be mentioned.

[0061] Figure 4A schematic side view of a hub 2 with a pole ring 8 pressed thereon is disclosed to illustrate the interaction between an axially offset recess 14 and a tool engagement region 13 formed at the end side of the hub neck 3. Three recesses 14, 14a, each having different axial positions on the fastening section 7, can be seen, wherein only the recess 14a axially closest to the pulse generator section 10 at least partially radially covers the tool engagement region 13. This overlap is so large in the axial direction that the tool engagement region 13, still accessible to this extent, provides sufficient space to accommodate the end of the lever tool 28.

[0062] Figure 5 A schematic cross-sectional view of a hub 2 is shown, which has a clamped pole ring 8 and a detent lever tool 28 to better illustrate the lever mechanism. The lever tool 28 is guided at its end into a recess 14a and simultaneously abuts against a tool engagement region 13 and an end-side base 32 of the tool engagement region 13. If the lever tool 28 is now tightened, wherein the lever tool 28 rests on the base 32 and pivots about this region, the lever tool 28 also abuts against the wall 31 of the recess 14a on the vehicle side with its lever arm 29. In other words, the wall 31 is the longitudinal edge of the recesses 14, 14a closest to the pulse generator section 10. If the lever movement of the lever arm 29 continues, a force is applied to the pole ring 8 in the axial direction, exceeding the force of the frictional engagement between the pole ring 8 and the pole ring seat 12, thereby causing a slight displacement of the pole ring.

[0063] If the lever travel is exhausted, then according to Figure 4 The second recess 14 has been optimally positioned relative to the tool engagement area 13 in order to repeat the steps mentioned above. Thus, the recesses 14, 14a are chosen in their position and number such that when the above process is performed at the last recess 14 at the latest, the pole ring 8 slides completely downward from the pole ring seat 12, and this last recess 14 is also the recess closest to the lower edge of the fastening area 7.

[0064] Figure 6 A third embodiment of the pole ring 8 is shown, which is partially derived from the pole ring of the first embodiment. According to the third embodiment, not only the recess 14a but also other recesses 14 are configured in pairs in the fastening section 7, wherein, correspondingly, one recess in the pair is exactly opposite to the other recess in the pair relative to the pole ring axis a. In this embodiment, two lever tools 28 are preferably applied and actuated synchronously, thereby eliminating any tilting of the pole ring when it disengages from the hub 2.

[0065] The two recesses in each pair of recesses have the same axial distance from the pulse generator section 10. Here, at least one, and preferably two, pairs of recesses, consisting of recesses 14a, are arranged near the upper edge of the fastening section 7 close to the pulse generator section 10. Another pair of recesses is arranged near another lower edge of the fastening section 7, and yet another pair of recesses is arranged at an axial position between the aforementioned pairs of recesses.

[0066] Of course, additional pairs of recesses, each having a different axial position on the fastening section 7, can also be arranged therebetween.

[0067] The recess 14a, which is closer to the upper edge and thus closer to the pulse generator section 10 in the pair of recesses, preferably the two recesses, has the smallest axial distance from the pulse generator section 10 compared to all other recesses 14.

[0068] In a preferred design, four recesses 14a in two pairs of recesses having the minimum axial distance from the pulse generator section are arranged around the pole ring axis a at 90° angular distances from each other. In this preferred design, the two pairs of four recesses 14a are located at, for example, 0°, 90°, 180°, and 270° circumferential positions. A first additional pair of recesses is then located at 45° and 225° circumferential positions, and yet another pair of recesses is located at 135° and 315° circumferential positions.

[0069] The minimum axial distance from the pulse generator section 10, one or two recesses in a recess pair, may have a different shape or profile compared to all other recesses 14. The profile is in... Figure 6 The recess extends in a wedge shape or tapers toward the other edge of the fastening section 7 on the side opposite to the pulse generator section 10, and the larger opening area allows for better visibility of the tool engagement area 13 arranged below it. Furthermore, the correspondingly different shapes or contours have indicated to the operator that these recesses 14a are the first places where two lever tools 28 must be placed.

[0070] To determine the sequence by which the installer guides the lever tool 28 through the recesses 14, 14a to the exposed base 32, four recesses 14a in two pairs of recesses having the smallest axial distance from the pulse generator section 10 have markings 33 that differ from any markings 33 at other recesses 14 in other pairs of recesses having larger axial distances from the pulse generator section 10. For example, according to Figure 6 The mark 33 is the Roman numeral “I” to “III”, which represents the recesses 14, 14a arranged adjacent to each other, corresponding to the order in which the lever tool 28 is introduced into the recesses 14, 14a.

[0071] Explanation of reference numerals in the attached figures:

[0072] 1 Shaft element

[0073] 2 wheel hubs

[0074] 3. Wheel hub neck

[0075] 4. Inner circumference

[0076] 5 Openings

[0077] 6 sensors

[0078] 7 Fastening Sections

[0079] 8 polar rings

[0080] 9 ABS sensors

[0081] 10 Pulse Generator Section

[0082] 12 Polar Rings

[0083] 13 Tool engagement area

[0084] 14 concavity

[0085] 14a recess

[0086] 15. Leverage tools

[0087] 17 End face

[0088] 18. Flip-edge

[0089] 19. Opening, slot

[0090] 19L elongated slot, opening

[0091] 20a internal rolling bearing

[0092] 20b external rolling bearing

[0093] 21 Flange

[0094] 22 Brake disc

[0095] 23 Wheel bolts

[0096] 24 rings

[0097] 25. Fixing ring

[0098] 26. Seals

[0099] 27 Installation sleeve

[0100] 28. Leverage tools

[0101] 29 Lever Arm

[0102] 31 wall

[0103] 32 abutment

[0104] 33 Mark

[0105] A hub axis

[0106] A. Polar ring axis

[0107] RL extension

[0108] R extension

Claims

1. A wheel hub assembly for a vehicle wheel, having a wheel hub (2) rotatably arranged on a shaft element (1) via a wheel hub bearing, the wheel hub (2) ending in a wheel hub neck (3) on the inner side of the vehicle, the inner circumference (4) of the wheel hub neck (3) defining an opening (5) for a central channel of the shaft element (1), and a fastening section (7) of an ABS sensor polar ring (8) mounted on the outer circumference (11) of the wheel hub neck (3), wherein, The polar ring (8) is composed of a pulse generator section (10) integrally formed with the fastening section (7), the pulse generator section (10) extending from the fastening section (7) toward the hub axis, characterized in that the hub neck (3) is provided with the following on its outer circumference (11): - A pole ring seat (12) extending coaxially with the hub axis, the fastening section (7) being radially supported on the pole ring seat (12) with its inner side; and - Tool engagement area (13) that is guided around the hub neck (3) and descends relative to the pole ring seat (12) toward the hub axis; Furthermore, the fastening section (7) has a recess that is distributed around the circumference of the fastening section (7) and has a non-uniform axial distance from the pulse generator section (10), wherein the recess that is axially closest to the pulse generator section (10) at least partially radially covers the tool engagement area (13).

2. The wheel hub assembly according to claim 1, characterized in that, The tool engagement area (13) is configured as a step at the vehicle side end of the hub neck (3).

3. The wheel hub assembly according to claim 1, characterized in that, The tool engagement area (13) is configured as a circumferential groove in the region of the polar ring seat (12).

4. The wheel hub assembly according to claim 1, characterized in that, The polar ring (8) is a stamped and bent piece made of metal sheet.

5. The wheel hub assembly according to any one of claims 1 to 3, characterized in that, The polar ring seat (12) and the tool engagement area (13) are machined and have a rust-proof layer.

6. The wheel hub assembly according to claim 1, characterized in that, The pole ring (8) is axially pressed onto the pole ring seat (12) of the hub (2) and held there only by frictional engagement.

7. The wheel hub assembly according to claim 1, characterized in that, The axial support of the pole ring (8) is only provided on the end face (17) of the hub neck (3) formed between the inner circumference (4) and the pole ring seat (12).

8. The wheel hub assembly according to claim 1 or 4, characterized in that, The pulse generator section (10) has a flange (18) at its inner edge.

9. The wheel hub assembly according to claim 1, characterized in that, The pulse generator section (10) is provided with openings that are evenly distributed along the circumferential direction; and at least some of the openings have outward extensions that extend at least to the radius of the inner circumference (4) of the hub neck (3).

10. An electrode ring for an ABS sensor used to sense the rotation of a vehicle wheel, comprising a fastening section (7) for mounting the electrode ring to the hub of the vehicle wheel and a pulse generator section (10) integrally formed with the fastening section (7), the pulse generator section (10) extending from the fastening section (7) toward the hub axis and having openings uniformly distributed in a circumferential direction, characterized in that, The fastening section (7) has a recess that is distributed on the circumference of the fastening section (7) and has a non-uniform axial distance from the pulse generator section (10), wherein the recess is configured as a slot extending in the circumferential direction.

11. The polar ring according to claim 10, characterized in that, Each of the recesses has a recess pair that is disposed opposite to another recess relative to the pole ring axis and forms a recess pair with each other, wherein each recess pair has a non-uniform axial distance from the pulse generator section (10).

12. The polar ring according to claim 10, characterized in that, Two recesses forming a pair of recesses are arranged opposite each other relative to the polar ring axis and have the same axial distance from the pulse generator section (10), wherein the axial distance is less than the axial distance of the other recesses.

13. The polar ring according to claim 12, characterized in that, It also has two additional recesses forming a pair of opposite recesses and having a small axial distance from the pulse generator section (10), wherein the recesses in the two pairs of recesses are arranged around the pole ring axis at a 90° angular spacing.

14. The polar ring according to claim 13, characterized in that, Between two pairs of recesses having the same and small axial distance from the pulse generator section (10), there are other pairs of recesses having other axial distances from the pulse generator section (10).

15. The polar ring according to claim 13, characterized in that, The recess having a small axial distance from the pulse generator section (10) has a different profile than all other recesses.

16. The polar ring according to claim 13, characterized in that, The recess having a small axial distance from the pulse generator section (10) has a mark (33) that is different from the mark (33) at all other recesses.

17. The polar ring according to claim 10, characterized in that, The opening in the pulse generator section (10) has different radial extensions, wherein the extensions are extensions required for sensing by the ABS sensor, and wherein the outward extensions are 2 mm to 10 mm larger than the extensions.

18. The polar ring according to claim 10, characterized in that, The pulse generator section (10) has a flange (18) at its inner edge.

19. The polar ring according to claim 10, characterized in that, The stamped recess has outwardly oriented folded edges along its contour.

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