The invention relates to a wheel spacer disc for motor vehicles comprising a plurality of wheel bolt openings, comprising a rim centering element for centering a rim relative to the wheel spacer disc, and comprising a wheel hub centering element for centering the wheel spacer disc relative to a wheel hub. The invention further relates to an arrangement comprising a wheel hub, a wheel spacer disc and a rim for motor vehicles. The invention further relates to an arrangement comprising a wheel hub, a wheel spacer disc and a rim for motor vehicles.
The object of the invention is to improve a wheel spacer disc regarding the ability to mount a rim on the wheel spacer disc, as well as the rim together with the wheel spacer disc on a wheel hub.
In order to achieve the object, a wheel spacer disc for motor vehicles having the features of claim 1, an arrangement comprising a wheel hub, the wheel spacer disc for motor vehicles and a rim as claimed in claim 10 and a further arrangement comprising the wheel hub, the wheel spacer disc for motor vehicles and the rim as claimed in claim 13 are provided according to the invention. Developments are specified in the dependent claims 2 to 9, 11 to 12 and 14 to 16.
According to the invention, a wheel spacer disc for motor vehicles is provided, said wheel spacer disc comprising a plurality of wheel bolt openings, comprising a rim centering element for centering a rim relative to the wheel spacer disc and comprising a wheel hub centering element for centering the wheel spacer disc relative to a wheel hub, wherein the plurality of wheel bolt openings are designed in each case as stepped openings for the respective partial reception of shaft nuts, wherein a section of the stepped openings having a greater diameter is arranged on a side of the wheel spacer disc on which the rim centering element is arranged.
A wheel spacer disc, also called a spacer disc, in the context of the invention is a disc which serves to achieve track widening on a motor vehicle and thus an increase in the track width of the motor vehicle. The wheel spacer disc may have various embodiments. An embodiment of the wheel spacer disc in annular shape is particularly advantageous, wherein elements of the wheel spacer disc are arranged as symmetrically as possible about a central longitudinal axis of the wheel spacer disc. A symmetrical embodiment of the wheel spacer disc is particularly advantageous in terms of a mass distribution about a rotational axis which in an ideal case corresponds to the central longitudinal axis of the wheel spacer disc in order to avoid possible imbalance during a rotation of the wheel spacer disc.
In a preferred embodiment, the wheel spacer disc comprises a center opening. The center opening is to be understood as a recess which extends along the central longitudinal axis of the wheel spacer disc through the wheel spacer disc and may receive at least partially a centering element of the wheel hub, by the centering element of the wheel hub projecting into the center opening or penetrating through the center opening. The center opening is particularly advantageously arranged centrally on the wheel spacer disc. Moreover, the center opening has a circumferential wall which has a height along the central longitudinal axis of the wheel spacer disc which in turn corresponds to a thickness of the wheel spacer disc. In one embodiment, the wheel spacer disc may have a shaping or recess which is arranged centrally on the wheel spacer disc and which may extend along a central longitudinal axis of the wheel spacer disc. In this case the wheel hub centering element may be arranged on an inner face of the shaping for centering the wheel spacer disc relative to the wheel hub, and the rim centering element may be arranged on an outer face of the shaping for centering the rim relative to the wheel spacer disc.
The wheel spacer disc for motor vehicles also has the plurality of wheel bolt openings, in particular five wheel bolt openings, which are designed as stepped openings. In particular, the wheel spacer disc has no further wheel bolt openings or openings configured as a stepped opening for inserting bolts and the like, so that all of the wheel bolt openings are designed as stepped openings for partially receiving shaft nuts. The stepped openings serve for at least partially receiving shaft nuts. In this case the stepped openings, on the one hand, have the greater diameter for receiving the shaft nuts and, on the other hand, a smaller diameter for receiving the stud bolts of the wheel hub. In this case, the section of the stepped openings having the greater diameter is arranged on the side of the wheel spacer disc on which the rim centering element is also arranged for centering the rim relative to the wheel spacer disc and the section of the stepped openings having the smaller diameter is arranged on the side of the wheel spacer disc remote from the rim centering element. So that the section of the stepped openings having the greater diameter is able to receive the shaft nuts at least partially, the greater diameter has at least a diameter which is configured to be equal to or greater than the diameter of a shaft of the shaft nuts.
In a development of the invention it may be provided that the wheel spacer disc has a thickness along a central longitudinal axis of the wheel spacer disc which is less than 15 mm, in particular 2 mm, in particular 3 mm, 5 mm, 8 mm or 10 mm, in particular is between 2 mm and 15 mm.
In a development of the invention it may be provided that a section of the stepped openings having a smaller diameter has a thickness along the central longitudinal axis of the wheel spacer disc which is between 2 mm and 5 mm.
The section of the stepped openings having the smaller diameter in this case is designed such that it is configured to be sufficiently stable in order to center the wheel spacer disc for motor vehicles on a plurality, of stud bolts of the wheel hub sufficiently accurately and does not exceed a thickness along the central longitudinal axis of the wheel spacer disc which could hinder the respective partial reception of the shaft nuts during a screwing-in process. Particularly advantageously, the section of the stepped openings having the smaller diameter has a thickness along the central longitudinal axis of the wheel spacer disc of 2 mm to 5 mm.
In a development of the invention it may be provided that the section of the stepped openings having the smaller diameter has at least a difference in diameter relative to the section of the stepped openings having the greater diameter, which corresponds to twice the wall thickness of the shaft nuts.
In order to guarantee that the shaft nuts are respectively partially received, at least one spacing which corresponds to the wall thickness of the shaft nuts is required between a circumferential wall of the section having the greater diameter of the stepped openings and the plurality of stud bolts. Particularly preferably, this spacing is at least as great as the wall thickness of the shaft nuts or greater. The spacing between the circumferential wall of the section having the greater diameter and the plurality of stud bolts is predetermined by the section of the stepped openings having the smaller diameter. The section of the stepped openings having the smaller diameter thus extends further into the wheel bolt openings, at least by the difference in diameter relative to the section of the stepped openings having the greater diameter, which corresponds to twice the wall thickness of the shaft nuts. Thus a partial penetration of the shaft nuts into the stepped openings is not hindered during a mounting process.
In a development of the invention it may be provided that the rim centering element and the wheel hub centering element are configured in each case integrally with the wheel spacer disc.
In a preferred embodiment the rim centering element extends out of the wheel spacer disc circumferentially around the center opening. In this case the rim centering element also has a rim centering surface which is arranged on the rim centering element and which is arranged remote from the central longitudinal axis of the wheel spacer disc. Moreover, in the preferred embodiment the wheel hub centering element is arranged circumferentially on the center opening and facing the central longitudinal axis of the wheel spacer disc. Thus in the preferred embodiment the rim centering element and the wheel hub centering element are configured from the same material as the wheel spacer disc. The wheel spacer disc is particularly advantageously configured from aluminum or any other material which is relatively lightweight and yet robust.
In a development of the invention it may be provided that the rim centering element and the wheel hub centering element are configured as a separate component, in particular as an annular component.
A component which has the rim centering element and the wheel hub centering element may be provided separately from the wheel spacer disc. Particularly advantageously, the separate component is designed as an annular component and is able to be inserted into the center opening of the wheel spacer disc. To this end, the center opening of the wheel spacer disc has a substantially greater diameter than the centering element of the wheel hub. The separate component is thus able to be inserted into the center opening of the wheel spacer disc. For example, the separate component is a ring which is configured from plastics and which is able to be fastened by means of a latching device to a circumferential wall of the center opening of the wheel spacer disc. This ring has the wheel hub centering element and the rim centering element. The rim centering element extends in the latched state of the separate component in the center opening of the wheel spacer disc substantially parallel to and along the central longitudinal axis of the wheel spacer disc away from the wheel spacer disc. Moreover, the separate component which is shaped as a ring has the wheel hub centering element on an inner face. The wheel hub centering element extends along the separate component substantially parallel to and in the direction of the central longitudinal axis of the wheel spacer disc, whilst it faces the central longitudinal axis of the wheel spacer disc. The rim centering element is arranged, however, remote from the central longitudinal axis of the wheel spacer disc and extends on an outer face of the separate component. The separate component thus serves firstly for centering the wheel spacer disc relative to the wheel hub and secondly for centering the wheel spacer disc relative to the rim. This separate component with the latching device, the rim centering element and the wheel hub centering element may be configured, for example, from plastics, a material similar to plastics or any other suitable material. In this case, the separate component has to be sufficiently stable in order to be able to ensure the centering of the rim relative to the wheel spacer disc and the centering of the wheel spacer disc relative to the wheel hub.
In a development of the invention it may be provided that the rim centering element is arranged circumferentially around a center opening of the wheel spacer disc and extends out of the wheel spacer disc along the central longitudinal axis of the wheel spacer disc.
The rim centering element extends substantially circumferentially around the center opening of the wheel spacer disc, out of said wheel spacer disc. In this case, the rim centering surface of the rim centering element is oriented substantially parallel to the central longitudinal axis of the wheel spacer disc. This rim centering surface may run in the same direction as the rim centering element extending out of the wheel spacer disc along the central longitudinal axis of the wheel spacer disc, conically toward the central longitudinal axis of the wheel spacer disc. Thus it is possible to compensate for tolerances when pushing the wheel spacer disc onto the rim. This is relevant, in particular, for manufacturing tolerances which may play a role both in the rim and in the wheel spacer disc and may be compensated by the rim centering element running conically toward the central longitudinal axis.
In a development of the invention it may be provided that the wheel hub centering element is configured as a circumferential wall around the center opening.
Whilst the circumferential wall is oriented at least substantially parallel to the central longitudinal axis of the wheel spacer disc, in one embodiment the circumferential wall and thus the wheel hub centering element may also run slightly conically toward the central longitudinal axis and in the same direction in which the rim centering element also extends out of the wheel spacer disc. Thus it is possible to compensate for tolerances, in particular manufacturing tolerances, of the wheel hub and the wheel spacer disc when pushing the wheel spacer disc onto the wheel hub and/or onto the centering element of the wheel hub. The wheel hub centering element, as a circumferential wall around the center opening, thus tapers toward the central longitudinal axis of the wheel spacer disc in the same direction as that of the rim centering element extending out of the wheel spacer disc.
According to the invention an arrangement comprising a wheel hub, a wheel spacer disc according to the invention and a rim for motor vehicles is provided, wherein the wheel hub has at least one centering element and a plurality of stud bolts for fastening the rim, wherein the wheel spacer disc is centered relative to the wheel hub, wherein the rim is centered by means of the rim centering element relative to the wheel spacer disc, wherein a plurality of wheel bolt openings of the wheel spacer disc are oriented so as to be aligned with a plurality of wheel bolt openings of the rim, and the plurality of stud bolts of the wheel hub are arranged in each case at least partially in the plurality of wheel bolt openings of the wheel spacer disc, wherein a plurality of shaft nuts are provided for fastening the rim and the wheel spacer disc to the wheel hub, wherein the plurality of shaft nuts are screwed in each case onto the plurality of stud bolts of the wheel hub, wherein the shaft nuts project through the plurality of wheel bolt openings of the rim and wherein the plurality of shaft nuts in the region of stepped openings project at least partially into the section of the stepped openings of the wheel spacer disc having the greater diameter.
In a mounted state, a bearing surface of the wheel hub is in abutment with a wheel hub bearing surface of the wheel spacer disc. Furthermore, a rim bearing surface of the wheel spacer disc is in abutment with a bearing surface of the rim. The stud bolts of the wheel hub have a specific length. The stud bolts of the wheel hub project through the wheel bolt openings of the wheel spacer disc and at least into the wheel bolt openings of the rim. With an increase in the thickness of the wheel spacer disc along the central longitudinal axis of the wheel spacer disc, therefore, the projection of the stud bolts into the wheel bolt openings of the rim reduces. Particularly advantageously, therefore, a shaft length of the shaft nuts is dimensioned such that a sufficient threaded engagement of the shaft nuts on the plurality of stud bolts is ensured. For the sufficient threaded engagement, the shaft nuts in the region of the shaft openings project at least partially into the section of the stepped openings of the wheel spacer disc which is designed with the greater diameter.
In a development of the invention it may be provided that the shaft length of the plurality of shaft nuts depends on a thickness of the wheel spacer disc.
A spacing of the rim from the wheel hub increases with an increasing thickness of the wheel spacer disc. Since the plurality of stud bolts are fixed to the wheel hub, with the increasing thickness these stud bolts are increasingly surrounded by the wheel bolt openings of the wheel spacer disc in the direction along the central longitudinal axis of the wheel spacer disc and away from the wheel hub. So that a sufficient threaded engagement of the shaft nuts on the plurality of stud bolts is still guaranteed, the shaft length of the shaft nuts has to be designed to be longer and thus dependent on the thickness of the wheel spacer disc.
In a development of the invention it may be provided that a step height of the stepped bores depends on the thickness of the wheel spacer disc.
According to the invention an arrangement comprising a wheel hub, a wheel spacer disc according to the invention and a rim for motor vehicles is provided, wherein the wheel hub has at least one centering element and has a plurality of stud bolts for fastening the rim, wherein the wheel spacer disc is centered relative to the wheel hub, wherein the rim is centered by means of the rim centering element relative to the wheel spacer disc, wherein a plurality of wheel bolt openings of the wheel spacer disc are oriented so as to be aligned with a plurality of wheel bolt openings of the rim and the stud bolts of the wheel hub are arranged in each case at least partially in the wheel bolt openings of the wheel spacer disc, wherein a plurality of shaft nuts are provided for fastening the rim and the wheel spacer disc to the wheel hub, wherein the shaft nuts are screwed in each case onto the stud bolts of the wheel hub, wherein the stud bolts are provided with sleeves, wherein the sleeves project in each case into the wheel bolt openings of the wheel spacer disc from a bearing surface of the wheel hub and ensure a spacing between a lateral surface of the stud bolts from a circumferential wall of the wheel bolt openings of the wheel spacer disc and wherein the shaft nuts project through the wheel bolt openings of the rim, wherein the shaft nuts in the region of the wheel bolt openings project at least partially into the wheel bolt openings of the wheel spacer disc.
In one embodiment it may be provided that each stud bolt is provided with a sleeve. The sleeves in this case may be designed from plastics or from a material similar to plastics or even from any other suitable material. The sleeves are pushed onto the stud bolts and determine a spacing from the circumferential wall of the plurality of wheel bolt openings of the wheel spacer disc. Due to the spacing of the lateral surface of the stud bolts from the circumferential wall of the wheel bolt openings of the wheel spacer disc it is ensured that the shaft nuts project at least partially into the wheel bolt openings of the wheel spacer disc. The sleeves may be pushed onto the stud bolts.
In a development of the invention it may be provided that the spacing between the lateral surface of the plurality of stud bolts from the circumferential wall of the plurality of wheel bolt openings corresponds at least to a wall thickness of the plurality of shaft nuts.
So that the shaft nuts, whilst they are screwed onto the stud bolts, are able to project into the wheel bolt openings of the wheel spacer disc, it has to be ensured that the spacing between the lateral surface of the stud bolts and the circumferential wall of the wheel bolt openings during a screwing-in process is at least as great as the wall thickness of the shaft nuts.
In a development of the invention it may be provided that the sleeves have in each case a thickness along the central longitudinal axis of the wheel spacer disc which is between 2 mm and 5 mm.
Particularly advantageously the sleeves have in each case a thickness along the central longitudinal axis of the wheel spacer disc of 2 mm to 5 mm. The thickness is important, in particular, so that a centering of the wheel bolt openings of the wheel spacer disc onto the stud bolts and thus onto the sleeves which are pushed onto the stud bolts is successful.
Further advantages and aspects of the invention are disclosed in the claims and in the following description of preferred exemplary embodiments of the invention which are described hereinafter with reference to the figures, in which:
The wheel spacer disc 10 has a center opening 102 and five wheel bolt openings 104. The wheel bolt openings 104 are configured in each case as stepped openings. The wheel bolt openings 104 have a first section 1040 with a greater diameter and a second section 1042 with a smaller diameter. Furthermore, the five wheel bolt openings 104 are located on a diameter which is located between an external diameter of the wheel spacer disc 10 and a diameter of the center opening 102.
Moreover, a wheel hub centering element 106 is provided, said wheel hub centering element being arranged along a central longitudinal axis A of the wheel spacer disc 10 shown in
More specifically, the wheel hub centering element 106 is configured from the circumferential wall of the center opening 102 and has a wheel hub centering surface 1060. The wheel hub centering surface 1060 may be configured to be slightly conical in order to compensate for tolerances, in particular for manufacturing tolerances, when positioning the wheel spacer disc 10 on a centering element 202 of the wheel hub 20, not shown. A surface 1062 of the wheel hub centering element 106 running conically to the central longitudinal axis A of the wheel spacer disc 10 adjoins the wheel hub centering surface 1060.
Moreover the rim centering element 108 extends out of a rim bearing surface 100. In this case, a rim centering surface 1080 of the rim centering element 108 is conical so that a compensation of manufacturing tolerances and a centering of a rim 30, not shown, on the wheel spacer disc 10 is possible. Moreover a surface 1082 of the rim centering element 108 running from the rim bearing surface 100 conically to the rim centering surface 1080 is provided.
The wheel spacer 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 shape of a curved slot. The wheel bolt openings 406, 408 are configured and arranged such that different hole patterns of rims and wheel hubs may be covered by one and the same wheel spacer ring 402. The stepped bores are also configured as has been described with reference to the first embodiment of
The wheel spacer centering element 404 is fastened by latching elements, not identifiable in
Number | Date | Country | Kind |
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20 2019 100 728.1 | Feb 2019 | DE | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2020/052257 | 1/30/2020 | WO | 00 |