阅读说明：本技术 用于机动车的轮距加宽盘 (Track-widening disc for motor vehicle ) 是由 E·西蒙扬 于 2020-01-30 设计创作，主要内容包括：本发明涉及一种用于机动车的轮距加宽盘,该轮距加宽盘具有：多个车轮螺栓开口；用于使轮辋相对于所述轮距加宽盘定心的轮辋定心元件；以及用于使所述轮距加宽盘相对于轮毂定心的轮毂定心元件,其特征在于,多个车轮螺栓开口分别被构造为用于分别区段式地接纳杆螺母的阶梯式开口,其中所述阶梯式开口的拥有较大直径的区段布置在所述轮距加宽盘的布置有轮辋定心元件的一侧上。(The invention relates to a track-widening disc for a motor vehicle, having: a plurality of wheel bolt openings; a rim centering element for centering the rim relative to the track widening disc; and a hub centering element for centering the track widening disc relative to the hub, characterized in that a plurality of wheel bolt openings are each configured as a stepped opening for receiving a rod nut in each case in sections, wherein a section of the stepped opening having a larger diameter is arranged on the side of the track widening disc on which the rim centering element is arranged.)

1. Track-widening disc for a motor vehicle, having:

-a plurality of wheel bolt openings;

-a rim centering element for centering the rim relative to the track widening disc, and

a hub centering element for centering the track widening disc with respect to the hub,

it is characterized in that the preparation method is characterized in that,

the plurality of wheel stud openings are each designed as a stepped opening for receiving a spindle nut in each case in sections, wherein the section of the stepped opening having the larger diameter is arranged on the side of the track-widening disk on which the rim centering element is arranged.

2. Track-widening disc according to claim 1, characterized in that it has a thickness along the central longitudinal axis of the track-widening disc which is less than 15mm, in particular 2mm, in particular 3mm, 5mm, 8mm or 10mm, in particular between 2mm and 15 mm.

3. The track-widening disc according to claim 1 or 2, characterized in that the section of the stepped opening with the smaller diameter has a thickness along the central longitudinal axis of the track-widening disc of between 2mm and 5 mm.

4. The track-widening disc according to at least one of the preceding claims, characterized in that the section of the stepped opening with the smaller diameter has at least one diameter difference relative to the section of the stepped opening with the larger diameter, which corresponds to twice the wall thickness of the spindle nut.

5. The track-widening disc according to at least one of the preceding claims, characterized in that the rim-centering element and the hub-centering element are each constructed in one piece with the track-widening disc.

6. The track-widening disc according to at least one of claims 1 to 4, characterized in that the rim centering element and the hub centering element are configured as separate components, in particular as annular components.

7. The track-widening disc according to at least one of the preceding claims, characterized in that the rim centering elements are arranged circumferentially around a central opening of the track-widening disc and extend out of the track-widening disc along a central longitudinal axis of the track-widening disc.

8. The track-widening disc according to at least one of the preceding claims, characterized in that the hub centering element is configured as a surrounding wall surrounding the intermediate opening.

9. The track-widening disc according to at least one of the preceding claims, characterized in that all wheel bolt openings are configured as stepped openings for the sectional reception of a rod nut.

10. Assembly with a hub for a motor vehicle, a track-widening disc according to at least one of claims 1 to 9 and a rim, wherein:

the hub has at least one centering element and a plurality of supporting bolts for fixing the rim,

-the track widening disc is centred with respect to the hub,

-the rim is centred with respect to the track widening disc by means of rim centring elements,

the plurality of wheel stud openings of the track-widening disc are oriented in alignment with the plurality of wheel stud openings of the wheel rim, and the plurality of supporting studs of the wheel hub are arranged at least in sections in the plurality of wheel stud openings of the track-widening disc, respectively,

a plurality of rod nuts are provided for fixing the rim and the track-widening disc on the hub,

-the plurality of rod nuts are screwed onto a plurality of support bolts of the hub, respectively,

it is characterized in that the preparation method is characterized in that,

the rod nuts pass through a plurality of wheel stud openings of the wheel rim and project at least in sections in the region of the stepped openings into the sections of the stepped openings of the track-widening disks having the larger diameter.

11. The assembly of claim 10, wherein the rod lengths of the plurality of rod nuts are dependent on the thickness of the track widening disc.

12. The assembly of claim 10 or 11, wherein a step height of the stepped opening is dependent on a thickness of the track widening disc.

13. Assembly with a hub, a track-widening disc and a rim for a motor vehicle, wherein

The hub has at least one centering element and a plurality of supporting bolts for fixing the rim,

-the track widening disc is centred with respect to the hub,

-the rim is centred with respect to the track widening disc by means of rim centring elements,

the plurality of wheel stud openings of the track-widening disc are oriented in alignment with the plurality of wheel stud openings of the wheel rim and the plurality of supporting studs of the wheel hub are arranged at least in sections in the plurality of wheel stud openings of the track-widening disc, respectively,

a plurality of rod nuts are provided for fixing the rim and the track-widening disc on the hub,

-the plurality of rod nuts are screwed onto a plurality of support bolts of the hub, respectively,

it is characterized in that the preparation method is characterized in that,

at least one support bolt is provided with a sleeve, wherein the sleeve projects from the contact surface of the hub into the wheel bolt opening of the track-widening disk and ensures a distance between the outer circumferential surface of the support bolt and the surrounding wall of the wheel bolt opening of the track-widening disk, and

the spindle nut passes through a wheel stud opening of the wheel rim, wherein the spindle nut projects at least in sections into a wheel stud opening of the track-widening disk in the region of the wheel stud opening.

14. An assembly according to claim 13, wherein one sleeve is pushed over each support bolt.

15. The assembly according to claim 13 or 14, characterized in that the distance between the outer circumferential surface of the support bolt and the surrounding wall of the wheel bolt opening corresponds at least to the wall thickness of the spindle nut.

16. The assembly of claim 13, 14 or 15, wherein the sleeve has a thickness along a central longitudinal axis of the track widening disc of between 2mm and 5 mm.

Technical Field

The invention relates to a track-widening disc for a motor vehicle, having a plurality of wheel stud openings, a rim centering element for centering a rim relative to the track-widening disc, and a hub centering element for centering the track-widening disc relative to a hub. The invention further relates to an assembly having a hub, a track-widening disc and a rim for a motor vehicle. The invention also relates to another assembly having a hub, a track widening disc and a rim for a motor vehicle.

Disclosure of Invention

The aim of the invention is to improve the wheel moment widening disk with respect to the ability to mount the rim on the wheel moment widening disk and the ability to mount the rim together with the wheel moment widening disk on the wheel hub.

In order to solve this object, according to the invention, a track-widening disk for a motor vehicle is provided having the features of claim 1, an assembly having a wheel hub, a track-widening disk for a motor vehicle and a wheel rim according to claim 10 and a further assembly having a wheel hub, a track-widening disk for a motor vehicle and a wheel rim according to claim 13. Improvements are specified in the dependent claims 2 to 9, 11 to 12 and 14 to 16.

According to the invention, a track-widening disk for a motor vehicle is provided, having a plurality of wheel stud openings, a rim centering element for centering a rim relative to the track-widening disk and a hub centering element for centering the track-widening disk relative to a hub, wherein the plurality of wheel stud openings are each configured as a stepped opening for receiving a rod nut in each case in sections, the section of the stepped opening having the larger diameter being arranged on the side of the track-widening disk on which the rim centering element is arranged.

In the sense of the present invention, a track-widening disk, also referred to as a spacer, is a disk which is used to achieve a widening of the track width on a motor vehicle and thus an enlargement of the track width of the motor vehicle. The track-widening disks can have different designs. Particularly advantageous is the design of the track-widening disk in the form of a ring, wherein the elements of the track-widening disk are arranged as symmetrically as possible around the central longitudinal axis of the track-widening disk. The symmetrical design of the track-widening disk is particularly advantageous with regard to the mass distribution about an axis of rotation, which ideally corresponds to the central longitudinal axis of the track-widening disk, in order to avoid possible imbalances during rotation of the track-widening disk.

In a preferred embodiment, the track-widening disk has a central opening. "central opening" is to be understood to mean a recess which extends along the central longitudinal axis of the track-widening disk through the track-widening disk and is able to receive a centering element of the hub at least in sections by: the centering elements of the hub protrude into the central opening or pass through the central opening. The central opening is particularly advantageously arranged centrally on the track-widening disc. Furthermore, the central opening has a circumferential wall which has a height along the central longitudinal axis of the track-widening disk, which in turn corresponds to the thickness of the track-widening disk. In one embodiment, the track-widening disk can have a profile or recess arranged centrally on it, which can extend along a central longitudinal axis of the track-widening disk. In this case, a hub centering element for centering the track widening disc relative to the hub can be arranged on the inner side of the profile, and a rim centering element for centering the rim relative to the track widening disc can be arranged on the outer side of the profile.

Furthermore, the track-widening disk for a motor vehicle has a plurality of wheel bolt openings, in particular five wheel bolt openings, which are embodied as stepped openings. In particular, the track-widening disks have no further wheel-bolt openings, which are designed as stepped openings, or openings for inserting bolts and the like, so that all wheel-bolt openings are nevertheless designed as stepped openings for the sectional reception of the spindle nuts. The stepped opening is for receiving the rod nut at least in sections. The stepped opening has a larger diameter for receiving the spindle nut on the one hand and a smaller diameter for receiving the support bolt of the hub on the other hand. In this case, the section of the stepped opening with the larger diameter is arranged on the side of the track-widening disc on which the rim centering elements for centering the rim relative to the track-widening disc are also arranged, and the section of the stepped opening with the smaller diameter is arranged on the side of the track-widening disc facing away from the rim centering elements. In order to be able to receive the rod nut at least in sections in the section of the stepped opening having the larger diameter, the larger diameter has at least a diameter which is designed to be equal to or greater than the diameter of the rod nut.

In a development of the invention, it can be provided that the track-widening disk has a thickness along the central longitudinal axis of the track-widening disk which is less than 15m, in particular less than 2mm, in particular less than 3mm, 5mm, 8mm or 10mm, in particular between 2mm and 15 mm.

In a development of the invention, it can be provided that the section of the stepped opening with the smaller diameter has a thickness along the central longitudinal axis of the track-widening disk of between 2mm and 5 mm.

The smaller-diameter section of the stepped opening is designed in such a way that it is sufficiently stable in order to center the track-widening disk for a motor vehicle sufficiently precisely on the support bolts of the wheel hub and not to exceed a thickness along the central longitudinal axis of the track-widening disk, which thickness may prevent a separate sectional reception of the spindle nut during the screwing-in process. It is particularly advantageous if the section of the stepped opening with the smaller diameter has a thickness along the central longitudinal axis of the track widening disk of 2mm to 5 mm.

In a development of the invention, it can be provided that the section of the stepped opening with the smaller diameter has at least one difference in diameter in relation to the section with the larger diameter with the stepped opening, which difference in diameter corresponds to the double wall thickness of the spindle nut.

In order to ensure that the rod nut is received in each case in sections, at least one distance, which corresponds to the wall thickness of the rod nut, is provided between the circumferential wall of the larger-diameter section of the stepped opening and the supporting bolts. Particularly preferably, this distance is at least as large as or greater than the wall thickness of the spindle nut. The distance between the circumferential wall of the section with the larger diameter and the plurality of support bolts is predetermined by the section with the smaller diameter of the stepped opening. The section of the stepped opening with the smaller diameter thus extends further into the wheel bolt opening at least by a diameter difference relative to the section of the stepped opening with the larger diameter, which corresponds to twice the wall thickness of the spindle nut. The insertion of the rod nut into the stepped opening in sections is thereby not hindered during the mounting process.

In a further development of the invention, it can be provided that the rim centering element and the hub centering element are each formed in one piece with the track-widening disk.

In a preferred embodiment, the rim centering elements extend from the track-widening disk around the central opening in a circumferential manner. The rim centering element also has a rim centering surface which is arranged on the rim centering element and is arranged away from the central longitudinal axis of the track-widening disk. In a preferred embodiment, the hub centering element is arranged circumferentially at the intermediate opening and faces the central longitudinal axis of the track-widening disc. In a preferred embodiment, the rim centering element and the hub centering element are therefore composed of the same material as the track-widening disc. The track-widening disks are particularly advantageously constructed from aluminum or other light, but nevertheless strong, material.

In a development of the invention, it can be provided that the rim centering element and the hub centering element are designed as separate components, in particular as annular components.

A member separate from the track widening disc can be provided, having a rim centering element and a hub centering element. It is particularly advantageous if the separate component is embodied as an annular component and can be inserted into the central opening of the track-widening disk. For this purpose, the central opening of the track-widening disc has a diameter which is much larger than the centering elements of the hub. The separate component can then be inserted into the central opening of the track-widening disc. For example, the separate component is a ring made of plastic, which can be fastened to a surrounding wall of the central opening of the track-widening disk by means of a latching mechanism. This ring has a hub centering element and a rim centering element. The rim centering elements extend out of the track-widening disk substantially parallel to and along the central longitudinal axis of the track-widening disk in the latched state of the separate component in the central opening of the track-widening disk. Furthermore, the separate component, which is formed as a ring, has a hub centering element on the inner side. The hub centering element extends substantially parallel along the divided members and in the direction of the central longitudinal axis of the moment widening disk, while it faces the central longitudinal axis of the moment widening disk. However, the rim centering elements are arranged away from the central longitudinal axis of the track-widening disc and extend on the outer side of the separate component. The separate component serves thereby on the one hand to center the track-widening disc with respect to the wheel hub and on the other hand to center the track-widening disc with respect to the wheel rim. This separate component with the latching mechanism, the rim centering element and the hub centering element can be made of plastic, a plastic-like material or another suitable material, for example. The separate components must be sufficiently stable in order to be able to ensure the centering of the rim relative to the track-widening disc and the centering of the track-widening disc relative to the hub.

In a development of the invention, it can be provided that the rim centering element is arranged around the central opening of the track-widening disk and extends out of the track-widening disk along the central longitudinal axis of the track-widening disk.

The rim centering element extends therefrom substantially circumferentially around the central opening of the track widening disc. In this case, the rim centering surfaces of the rim centering elements are oriented substantially parallel to the central longitudinal axis of the track widening disk. This rim centering surface can taper conically towards the central longitudinal axis of the track-widening disk, if it extends from the latter in the same direction as the rim centering elements along the central longitudinal axis of the track-widening disk. This allows tolerances in the displacement of the track-widening disk onto the rim to be compensated. This is particularly important for manufacturing tolerances which play an important role both in the rim and in the track-widening disk and can be compensated for by the conical tapering of the rim centering elements toward the central longitudinal axis.

In a development of the invention, it can be provided that the hub centering element is configured as a circumferential wall surrounding the central opening.

The circumferential wall is oriented at least substantially parallel to the central longitudinal axis of the track-widening disk, while in one embodiment the circumferential wall and thus also the hub centering element can taper slightly conically towards the central longitudinal axis and in the same direction in which the rim centering element also extends out of the track-widening disk. This makes it possible to compensate for tolerances, in particular manufacturing tolerances of the hub and the track-widening disk, when the track-widening disk is pushed onto the hub or a centering element of the hub. The hub centering elements as circumferential walls around the central opening thus taper in the same direction as the rim centering elements extend from the track-widening disk towards the central longitudinal axis of the track-widening disk.

According to the invention, an assembly having a hub for a motor vehicle, having a wheel moment widening disk according to the invention and having a rim, wherein the hub has at least one centering element and having a plurality of support bolts for fixing the rim, wherein the wheel moment widening disk is centered with respect to the hub, wherein the rim is centered with respect to the wheel moment widening disk by means of a rim centering element, wherein a plurality of wheel bolt openings of the wheel moment widening disk are oriented in alignment with a plurality of wheel bolt openings of the rim, and a plurality of support bolts of the hub are arranged in each case at least in sections in a plurality of wheel bolt openings of the wheel moment widening disk, wherein a plurality of rod nuts for fixing the rim and the wheel moment widening disk to the hub are provided, wherein a plurality of rod nuts are screwed onto a plurality of support bolts of the hub, wherein the rod nuts pass through a plurality of wheel bolt openings of the rim, and wherein the plurality of rod nuts project at least in sections in the region of the stepped opening into the section of the stepped opening of the wheel torque widening disk having the larger diameter.

In the mounted state, the bearing surface of the hub bears against the hub bearing surface of the track-widening disk. Furthermore, the rim contact surface of the track widening disk contacts the rim contact surface. The supporting bolts of the hub have a specific length. The support bolts of the hub pass through the wheel bolt openings of the wheel span widening disk and protrude at least into the wheel bolt openings of the rim. As the thickness of the track widening disk increases along the central longitudinal axis of the track widening disk, the extent to which the supporting bolts protrude into the wheel bolt openings of the wheel rim decreases. It is therefore particularly advantageous if the rod length of the rod nut is dimensioned in such a way that: sufficient threaded engagement of the rod nut on the plurality of support bolts is ensured. For sufficient threaded engagement, the spindle nut projects in the region of the stepped opening at least in sections into the stepped opening section of the track-widening disk, which section is provided with a larger diameter.

In a further development of the invention, it can be provided that the rod length of the plurality of rod nuts is dependent on the thickness of the track-widening disk.

As the thickness of the track widening disc increases, the rim-to-hub spacing increases. Since a plurality of support bolts are fastened to the hub, they are increasingly surrounded by the wheel bolt openings of the track widening disk with increasing thickness in the direction along the central longitudinal axis of the track widening disk and away from the hub. In order to nevertheless ensure sufficient threaded engagement of the spindle nut on the plurality of support bolts, the spindle length of the spindle nut should be made longer and therefore dependent on the thickness of the track-widening disk.

In a further development of the invention, it can be provided that the step height of the stepped opening is dependent on the thickness of the track-widening disk.

According to the invention, an assembly having a wheel hub for a motor vehicle, having a track-widening disk according to the invention and having a rim, wherein the wheel hub has at least one centering element and having a plurality of support bolts for fixing the rim, wherein the track-widening disk is centered with respect to the wheel hub, wherein the rim is centered with respect to the track-widening disk by means of the rim centering element, wherein a plurality of wheel bolt openings of the track-widening disk are aligned with a plurality of wheel bolt openings of the rim and the support bolts of the wheel hub are each arranged at least in sections in the wheel bolt openings of the track-widening disk, wherein a plurality of rod nuts for fixing the rim and the track-widening disk to the wheel hub are provided, wherein the rod nuts are each screwed onto the support bolts of the wheel hub, wherein the support bolts are provided with sleeves, wherein the sleeves each project from an abutment face of the wheel hub into the wheel bolt openings of the track-widening disk and ensure an outer portion of the support bolts The distance between the circumferential surface and the surrounding wall of the wheel stud opening of the track-widening disk, and wherein the spindle nut passes through the wheel stud opening of the wheel rim, wherein the spindle nut projects into the wheel stud opening of the track-widening disk at least in sections in the region of the wheel stud opening.

In one embodiment, it can be provided that each support bolt is provided with a sleeve. The sleeve can be made of plastic or a plastic-like material or also of another suitable material. The sleeve is pushed onto the support bolt and determines the distance to the surrounding walls of the wheel stud openings of the track-widening disk. The distance of the outer circumferential surface of the support bolt from the circumferential wall of the wheel bolt opening of the track-widening disk ensures that the spindle nut projects at least in sections into the wheel bolt opening of the track-widening disk. The sleeve can be pushed onto the support bolt.

In a further development of the invention, it can be provided that the distance between the outer circumferential surface of the support bolts and the circumferential wall of the wheel bolt openings corresponds at least to the wall thickness of the rod nuts.

In order to be able to insert the spindle nut into the wheel spindle opening of the track widening disk during the screwing process of the spindle nut onto the supporting spindle, it should be ensured that the distance between the outer circumferential surface of the supporting spindle and the surrounding wall of the wheel spindle opening is at least as great as the wall thickness of the spindle nut during the screwing process.

In a further development of the invention, it can be provided that the sleeves each have a thickness along the central longitudinal axis of the track-widening disk of between 2mm and 5 mm.

It is particularly advantageous if the sleeves each have a thickness of 2mm to 5mm along the central longitudinal axis of the track widening disk. The thickness is particularly decisive for the following cases, namely: the wheel stud openings of the track-widening disks are centered on the support studs and thus on the sleeves pushed onto the support studs.

Drawings

Further advantages and aspects of the invention emerge from the claims and the following description of preferred embodiments of the invention, which are explained below with the aid of the drawings. Shown here are:

FIG. 1 shows an isometric view of the track widening disc of FIG. 1 from obliquely above;

FIG. 2 shows an isometric view of the track widening disc of FIG. 1 from obliquely below;

FIG. 3 shows a side view of the track widening disc of FIG. 1;

FIG. 4 shows a top view of the track widening disc of FIG. 1;

FIG. 5 shows a bottom view of the track widening disc of FIG. 1;

FIG. 6 shows an isometric view in partial cutaway from obliquely above of an assembly having a hub, rim and track widening disc of FIG. 1;

FIG. 7 shows a side view in partial cross-section of the assembly according to FIG. 6 with a hub, rim and track widening disc of FIG. 1;

fig. 8 shows an isometric view from obliquely below of a track-widening disc according to a second embodiment of the invention;

fig. 9 shows a cut-away side view of the track widening disc of fig. 8.

Detailed Description

Fig. 1 shows an isometric view from obliquely above of a track-widening disc 10 according to a first embodiment of the invention.

The track widening plate 10 has a central opening 102 and five wheel bolt openings 104. The wheel bolt openings 104 are each configured as a stepped opening. The wheel bolt opening 104 has a first section 1040 with a larger diameter and a second section 1042 with a smaller diameter. Furthermore, the five wheel bolt openings 104 have a diameter between the outer diameter of the track widening disc 10 and the diameter of the intermediate opening 102.

Furthermore, a hub centering element 106 is provided, which is arranged in a rim centering element 108 shown in fig. 1 along a central longitudinal axis a of the moment widening disk 10 shown in fig. 3. Both the hub centering element 106 and the rim centering element 108 extend at least in sections from the circumferential wall of the central opening 102.

More precisely, the hub centering element 106 is formed by the surrounding wall of the central opening 102 and has a hub centering surface 1060. The hub centering surface 1060 can be slightly conical in order to compensate for tolerances, in particular manufacturing tolerances, when the track-widening disks 10 are slipped onto the centering elements 202, not shown, of the hub 20. The face 1062 of the hub centering element 106, which tapers conically towards the central longitudinal axis a of the track-widening disk 10, is connected to the hub centering face 1060.

Furthermore, the rim centering element 108 extends from the rim contact surface 100. In this case, the rim centering surface 1080 of the rim centering element 108 is conical, so that manufacturing tolerances can be compensated and the rim 30, not shown, can be centered on the moment widening disk 10. Furthermore, a surface 1082 of the rim centering element 108 is provided which tapers conically from the rim contact surface 100 to the rim centering surface 1080.

Fig. 2 shows an isometric view of the track-widening disc 10 according to the first embodiment of the invention, seen from obliquely below. Fig. 2 shows essentially the features already shown and explained in fig. 1. In contrast to fig. 1, fig. 2 shows the hub contact surface 101, which in the installed state contacts the hub 20, not shown, for which purpose reference is made to fig. 6 and 7. Furthermore, in fig. 2, the middle opening 102, the five wheel bolt openings 104, the hub centering element 106 with the hub centering face 1060 and the face 1062 can be seen.

Fig. 3 shows a side view of the track-widening disc 10 according to the first embodiment of the invention. Fig. 3 basically shows the features already shown and explained in fig. 1 and 2. The rim centering element 108 is shown along with the rim abutment surface 100, the hub abutment surface 101 and the central longitudinal axis a. Furthermore, the rim centering surfaces 1080 and 1082 of the rim centering elements 108 can be seen.

Fig. 4 shows a top view of the track-widening disc 10 according to the first embodiment of the invention. Fig. 4 essentially shows the features already shown and explained in fig. 1 to 3. The rim abutment surface 100, the intermediate opening 102 and five wheel bolt openings 104 in the form of stepped openings are shown. Here, the difference in diameter of the first section 1040 with the larger diameter and the second section 1042 with the smaller diameter of the wheel bolt opening 104 can be seen. The rim centering element 108 shown in a plan view not only shows the circumferential rim centering surface 1080 of the rim centering element 108, but also the surface 1082 thereof.

Fig. 5 shows a bottom view of the track-widening disc 10 according to the first embodiment of the invention. Fig. 5 essentially shows the features already shown and explained in fig. 1 to 4. The hub abutment surface 101, the intermediate opening 102 and the five wheel bolt openings 104 designed as stepped openings are shown. In the bottom view of the track-widening disk 10 shown in fig. 4, only the second section 1042 of the wheel stud opening 104 having the smaller diameter can be seen here. Furthermore, a hub centering element 106 having a hub centering surface 1060 and a surface 1062 is depicted.

Fig. 6 shows an isometric view, partly in section, from above and obliquely, of an assembly with a hub 20, a rim 30 and a track-widening disc 10 according to a first embodiment of the invention. The track-widening disk 10 is located between the hub 20 and the rim 30 and bears both against the hub 20 and against the rim 30. The rim 30 is fixed to the support bolts 200 of the hub 20 with a plurality of rod nuts 40 so that the moment widening disk 10 is clamped between the rim 30 and the hub 20. In the section of fig. 6, only three spindle nuts 40 and one spindle nut 40 that is cut away are illustrated in the originally five spindle nuts 40. It can be seen that the track widening disc 10 is centered with respect to the centering elements 202 of the hub 20, since the hub centering surfaces 1060 bear against the centering elements 202 of the hub 20. The rim 30 is centered with respect to the track-widening disk 10 on the rim centering elements 108 of the track-widening disk 10, since the rim centering surface 1080 rests against the centering surface 300 of the rim 30.

Fig. 7 shows a side view in partial section of the assembly according to fig. 6 with a hub 20, a rim 30 and a track-widening disc 10 according to a first embodiment of the invention. Fig. 7 basically shows the features already described and shown in fig. 6.

Fig. 8 shows an isometric view of a track-widening disc 400 according to a second embodiment of the invention, seen from obliquely below. The track-widening disk 400 is formed in two parts and has a track disk ring 402 and a track disk centering element 404.

The track disc ring 402 is provided with a total of six wheel bolt openings 406, 408, wherein four wheel bolt openings 406 are configured as stepped bores with a circular cross section and two wheel bolt openings 408 are configured as stepped bores in the form of curved, elongated bores. The wheel stud openings 406, 408 are designed and arranged such that different hole patterns of the rim and the hub can be covered by the same track disc ring 402. In other respects, the stepped bore is formed as explained with reference to the first exemplary embodiment of fig. 1 to 8.

The center disk centering element 404 is fixed in the center opening of the center disk ring 402 by means of latching elements, which are not visible in fig. 8, and is provided with a hub centering surface and a rim centering surface. By replacing the center disk centering elements 404, different hub diameters and rim opening diameters can be covered. The track disc centering elements 404 can be made of plastic, for example.

Fig. 9 shows a cut-away side view of the track widening disc 400 of fig. 8. The track disc centering element 404 is secured to the track disc ring 402 by means of latch arms 414. For this purpose, latching projections on the free ends of the latching arms 414 engage in circumferential grooves in the central opening of the tread disc ring 402. The rim centering surface 410 and the hub centering surface 412 can be seen on the track disc centering element 404. Both the rim centering surface 410 and the hub centering surface 412 can be slightly conical, so that they widen upward in the view of fig. 9 for compensating tolerances of the rim and the hub and ensuring reliable centering.