WO2012122967A1

WO2012122967A1 - Wheel hub

Info

Publication number: WO2012122967A1
Application number: PCT/DE2012/000255
Authority: WO
Inventors: Christoph Karl; Klaus Ehrler
Original assignee: Neumayer Tekfor Holding Gmbh
Priority date: 2011-03-17
Filing date: 2012-03-09
Publication date: 2012-09-20
Also published as: DE102011014264A1

Abstract

The invention relates to a wheel hub comprising a central section, a radial section, and a centering section. According to the invention, an insert forms the centering section.

Description

wheel hub

The invention relates to a wheel hub, having a central portion which extends substantially axially along a longitudinal axis, with a radial portion which extends substantially radially around the

A longitudinal axis extends, and with a centering portion which extends substantially axially along the longitudinal axis, wherein the central portion and the centering portion are arranged axially behind one another, and wherein the radial portion is disposed axially between an end of the central portion and one end of the Zentrierungsabschnitts, wherein at least one Insert is provided as a separate component, wherein the insert is designed at least partially cylindrical, and wherein the use of the

Centering section forms. Hubs are used in the motor vehicle as a link between a

Drive shaft and a vehicle wheel. For connection to the drive shaft is usually a central portion with a spline

provided, in which the free end of the drive shaft can be inserted. Such a spline is normally provided when it is a driven wheel or a driven axle. to

Attachment of the rim of the vehicle wheel and a brake disc are usually formed on a radial or flange portion holes with screw thread or, for example, bolts are pressed. With the growing importance of C0 ₂ reduction in vehicles, it is becoming more important to reduce the weight of components. For hubs, there are some examples of the prior art, in which deviates from a circular disk-shaped radial section: The

Published patent application DE 10 2005 052479 A1 describes a wheel hub which has recesses in the radial section. In this case, the radial section bounded by a circular stiffening means. The patent EP 1 285 783 B1 shows a wheel hub with three arms, each having a hole for screws. Known in the prior art are hubs for motor vehicles, which have a central tubular projection with a cylinder surface on which the brake disc and the wheel is placed to its centering. The wheel is thereby placed with its central bore on the tubular projection, and for example the projecting from the flange-like radial portion of the wheel hub bolts are inserted into corresponding axial holes of the wheel. Then wheel nuts are tightened on the bolt. There may be corrosion between the wheel hub and the wheel, in particular due to penetrating water or dirt in the connection area, ie via the centering. The published patent application DE 10244 721 A1 describes a generic wheel hub, in which a centering section is covered by an insert. The insert is made of a non-oxidizable metal to prevent corrosion. The wheel hub is designed in one piece. A multi-piece hub with an insert, which the

Zentrierungsabschnitt forms, describes the not pre-published

International application with the applicant's application number PCT / DE2010 / 001148. Similar embodiments describe the published patent applications DE 10 2006 029 604 A1, EP 0653 315 A1 or EP 1 717 063 A1.

The invention has for its object to propose a hub with a separate Zentrierungsabschnitt, which in particular allows easy and safe adaptation to different wheels. The object is achieved in that the radial section has at least one recess, and that the insert and the recess are designed and matched to one another such that the insert is arranged in sections in the recess. If wheels are used which require different diameters of Zentrierungsabschnitte, so each a suitable insert is used and in the

Radial section introduced. The inserts and the depression are preferably matched to one another in such a way that the inserts in each case partially fit into the depression and are fixed there, for example, and also undergo a centered alignment. Thus, different wheels can be securely mounted by different inserts on a wheel hub. The recess is, for example, a blind hole or a circumferential or sectionally formed groove in the radial section.

Since the insert is a separate component, in particular the centering section and the radial section can consist of the same or different materials. For example, light materials or material combinations, such as e.g. using aluminum or its alloys. The use as a separate component according to the invention forms the Zentrierungsabschnitt. Thus, the radial portion on this side also be substantially flat or flat.

By choosing the design and the materials of the insert and also the other components of the wheel hub, it is possible to respond to different requirements and conditions or in particular to implement a lightweight construction. The insert is preferably contacted or connected to the radial section and / or to the central section and / or to the centering section. An embodiment of the invention includes that the insert has at least one resilient portion, and that the resilient portion is at least partially introduced into a groove. In this embodiment, the assembly of the hub is addressed to itself. In an alternative or additional embodiment, the insert is fastened via a thread. Further connection possibilities are obvious to the person skilled in the art.

An embodiment of the invention provides that the insert has at least one lid region, and that the insert is designed in the form of a cap. The insert thus provides a closed support area for the wheel.

An embodiment of the invention includes that the insert completely or at least partially made of a non-oxidizing material - in particular of a plastic - so that preferably a contact corrosion between the wheel hub and the wheel is prevented.

One embodiment is that the insert is reinforced at least in sections. For example, the insert is a fiber reinforced plastic or reinforcing structures in use, e.g. in the

Cover section provided. For example, metallic deposits may also be present.

An embodiment of the invention provides that the radial section has at least one groove. In one embodiment, the resilient portion of the insert is introduced into this groove, so that the insert is at least partially attached to the radial portion.

An embodiment of the invention includes that the radial section substantially consists of only one material or of several materials. In one embodiment, the radial section is thus constructed from a plurality of different materials. This means that even lighter designs can be achieved by combining appropriate materials. In one embodiment, the radial section is reinforced. In the radial section are, for example, stabilizing structures or metallic inserts. The radial section can also consist at least partially of a fiber-reinforced material.

An embodiment of the invention provides that the central portion has at least one support portion, which extends at least in sections from the longitudinal axis radially outward. In this embodiment, the central portion has an area with a radial extent. The support area can be designed, for example rib-shaped or flange-like. This can be, for example, at a

Generate transverse extrusion process.

An embodiment of the invention includes that the radial portion is at least partially supported on the support portion. In this embodiment, the radial portion is at least partially on the radially extending support portion. The otherwise one-piece radially extending component of a wheel hub according to the prior art is thus designed in two parts in this embodiment. In this case, the support section and the radial section are connected to one another in an advantageous manner. An embodiment of the invention includes that the radial section is designed substantially in the form of a disc. In an additional embodiment, the disc has a through hole through which projects, for example, a component of the hub. However, the disc-shaped radial section may also be a completely closed disc or one with holes or recesses or Wells designed disk. For example, a ribbed structure is also possible.

An embodiment of the invention provides that the central portion and the radial portion and the support portion designed and such

matched to each other, that results in a groove. The springy

Section of the insert is thus introduced in this embodiment in a groove or in a space between the radial, central and support section.

Alternatively, the central portion and the radial portion are such

designed and matched to each other, that results in a groove. In a

Embodiment already has the support section via a groove, in which the resilient portion of the insert is introduced.

An embodiment of the invention provides that the central portion is at least partially formed from at least a first component and a second component. In this embodiment, the central portion thus results in at least two components. Thus, different materials can be used or in the production of suitable processes can be combined.

An embodiment of the invention includes that the first component has a, in particular hollow, cylindrical portion, to which the support portion, in particular tongue-like, radially adjoins. In particular, it is advantageously also provided that the second component is partially arranged in the first component and extends axially in particular over at least one or even both ends of the first component.

An embodiment of the invention includes that the central portion has a spline. An embodiment of the invention provides that the support portion is designed star-shaped. Alternatively or additionally, the radial section is designed star-shaped. An embodiment of the invention includes that the radial section and the support section are designed in one piece.

An embodiment of the invention provides that the radial section and / or the support section have at least one through hole. By such a bore in particular screws or bolts can be passed for the attachment of the wheel.

An embodiment of the invention includes that the radial section and / or the support section have at least one recess. Such a recess serves, for example, the weight reduction.

An embodiment of the wheel hub according to the invention provides that the recess has at least one undercut. The undercut is used, for example, that there snaps a hook or a hook-like portion of the insert.

An embodiment of the wheel hub according to the invention includes that the recess has at least one substantially conical

Section has. The conical section, which limits, for example, the depression in the direction of the wheel, serves, for example, for guiding the insert into the depression.

An embodiment of the wheel hub according to the invention provides that the recess has at least one centering section. In order for the wheel to be centered aligned, the insert should as well be centered accordingly. In this embodiment, this is done via the centering section which, in interaction with the configuration of the insert, effects an alignment of the insert parallel to the longitudinal axis. In one embodiment, the centering section is configured at least in sections essentially parallel to the longitudinal axis. In another

Embodiment are the centering of the recess and the

corresponding portion of the insert designed such that the insert is based on the depression, resulting in the centering. An embodiment of the wheel hub according to the invention includes that the undercut of the recess directly or indirectly adjoins the substantially conically shaped portion of the recess, and / or that the centering of the recess directly or indirectly to the in

Essentially conically shaped portion of the recess adjacent, and / or that the centering portion of the recess directly or indirectly adjacent to the undercut of the recess, and / or that

Centering portion of the recess between the substantially conically shaped portion of the recess and the undercut of the recess is arranged. In one embodiment, the recess is configured in such a way that, starting from the end of the recess facing the wheel, the following sections adjoin one another: a conical region for inserting the insert, a centering section for aligning the insert and an undercut for latching a e.g. hook-like portion of the insert. In one embodiment, the centering portion of the recess may coincide with the conical shaped portion of the recess. Thus, also the conical designed

Centering portion of the recess to the undercut of the recess

adjoin. An embodiment of the wheel hub according to the invention provides that the insert has at least one hook-like portion. About such a hook-like portion, the attachment of the insert in the recess can be made relatively easily, for example via the above-mentioned undercut in the recess.

An embodiment of the wheel hub according to the invention includes that the insert has at least one substantially conically configured portion. The cone is, for example, aligned with the conical section of the depression in such a way that a contact of the surfaces is made possible.

An embodiment of the wheel hub according to the invention provides that the insert has at least one centering section. In one embodiment, the centering portion of the insert is at least partially in

Substantially configured parallel to the longitudinal axis. In an alternative or additional embodiment, the centering portion of the insert is in

Essentially conical. The centering of the recess and the insert are coordinated such that overall centering of the insert is effected.

An embodiment of the wheel hub according to the invention comprises that the hook-like portion of the insert adjacent directly or indirectly to the substantially conically shaped portion of the insert, and / or that the centering portion of the insert directly or indirectly adjacent to the substantially conically shaped portion of the insert, and or that the centering portion of the insert directly or indirectly adjoins the hook-like portion of the insert, and / or that the centering portion of the insert between the substantially conically shaped portion of the insert and the hook-like portion of the insert is arranged. The sequence of sections of the Insert are thus, for example, in one embodiment, starting from the recess facing the end: a hook-like portion, a centering portion and a conical portion. In another

Embodiment, the centering portion of the insert also coincide with the conical shaped portion of the insert.

Furthermore, the invention relates to a construction kit for a wheel hub according to one of the above embodiments. At least two inserts are provided, which differ from one another at least in the outer diameter of the centering section.

The invention will be illustrated with reference to some in the figures

Embodiments explained in more detail. 1 shows a section through a wheel hub according to the prior art,

2: a section through a first variant of the wheel hub according to the invention, FIG. 3: an exploded view of the variant of FIG. 2,

4 is a truncated spatial representation of the variant of FIG. 2,

5 shows a truncated spatial representation of a second variant of the wheel hub according to the invention,

6 shows a section through a built third variant of

wheel hub according to the invention, 7 shows a section through a fourth variant of the wheel hub according to the invention,

8 shows an enlarged detail of the variant of FIG. 7,

9: a detail of Fig. 8,

10: an enlarged detail of a fifth variant of

wheel hub according to the invention,

1 1: an enlarged detail of FIG. 10,

12 shows a section through a sixth variant of the wheel hub according to the invention,

Fig. 13: an enlarged detail of Fig. 2, and Fig. 14: a wetteren enlarged detail of Fig. 12. In Fig. 1, a wheel hub according to the prior art is shown. The central portion 1 has a spline for Anbind ung a - not shown - wave. Furthermore, the central portion 1 adjacent to a cylindrical portion on a radially extending support portion 7. On the support section 7 is based

Radial section 2 from. The radial section 2 itself has a disk-like edge, to which the centering section 3 adjoins. The radial section 2 is thus located between in each case one end of the central section 1 or of the centering section 3. Radial section 2 and centering section 3 are designed in one piece according to the prior art. The centering section 3 and the central section 1 are arranged one behind the other on the longitudinal axis 20. The radial portion 2, which consists for example wholly or partly of aluminum, and the support portion 7 have through holes 10 through which bolts or screws for the attachment of the brake disc and the wheel are passed to the wheel hub.

On the centering section 3 is the cap-like insert 4 'according to the prior art with a final lid portion 4.2'. The insert 4 'is introduced into the radial section 2 and is thus fixed to this. Due to the design of the insert 4 'of a non-oxidizable material, for example a plastic, a contact corrosion between the centering portion 3 and the wheel to be applied thereto is prevented. In the vicinity of the end of the insert 4 ', which is here in a groove of the radial section 2, a ring structure 12 is provided, which facilitates the placement and centering of the insert 4' and possibly also assumes a sealing or protective function.

FIGS. 2 to 4 show a first variant of the invention

Wheel hub shown. The central portion 1 results from a first component 8 and a second component 9 for connection to the drive or propeller shaft. The first component 8 has a hollow cylindrical

Section in which the second component 9 is arranged in sections. At one end, the first component 8 has the support surface 7, which connects radially to the end. The second component 9 opens on one side in a so-called bell and on the other side in a pin around which a nut 6 is provided which connects the radial portion 2, the first component 8 and the second component 9 with each other. The radial section 2 is designed in particular as a flat disk with a hole in the middle. You can see the holes 10 for receiving bolts or screws for mounting the wheel to the wheel hub. The insert 4 is with the Cover region 4.2 cap or dome-like design and extends through the central bore of the radial section 2 into a groove 5 of the central portion 1 and is thereby held. The insert 4 serves as

Centering section 3. This is accompanied by the fact that the insert 4 consists of a suitably stable material so that the wheel can be held by the insert 4 during assembly. The lid area 4.2 also allows the application of motifs or logos. In terms of production technology, therefore, no additional material has to be expended for the centering section 3 in the radial section 2 or, if necessary, an additional production step is required. Of the

Radial section 2 can open substantially flat, since he does not have the

Centering forms. Furthermore, the insert 4 can be made of a lightweight material, so that weight is saved.

The variant of Fig. 2 can be seen in Fig. 3 in exploded view. The two components 8, 9 are rotatably connected to each other here via a plug connection.

In Fig. 4 it can be seen how the resilient portion 4.1 of the insert 4 rests in the groove 5 of the central portion 1 and is held there.

If, in the variant of FIGS. 2 to 4, the radial section 3 is designed as a full-surface pane, the second variant of FIG. 5 has recesses 11 which serve to reduce weight. In a further embodiment, the recesses 11, for example, with a

Filled aluminum foam. It can be seen that the radial section 2 here has a groove 5 in which the resilient section 4.1 of the insert 4 is arranged. The radial section 2 is designed star-shaped, wherein at its tongue-like tips, a ring is fixed, which is arranged with a circumferential nose in a groove of the tips. For the assembly For example, the ring is positioned in the heated state on the tips and as it cools, the ring contracts.

In the third variant of Fig. 6, the support portion 7 and the

Radial section 2 made in one piece. The wheel hub is here with a

Brake disc 13 and a wheel 14 shown together.

Fig. 7 shows a section through a fourth variant of

Wheel hub according to the invention. The central portion 1 and the radial portion 2 are integrally formed. In the radial section 2 is the

Deepening 2.1, which partially absorbs the insert 4. The insert 4 forms the centering section 3 and is designed, for example, rotationally symmetrical about the longitudinal axis 20 of the wheel hub. Fig. 8 shows a

Enlargement of the circled portion of Fig. 7. It can be seen how the conical sections 2.3, 4.6 of the recess 2.1 and the insert 4 lean against each other. A further enlargement of a region of FIG. 8 is shown in FIG. 9. The depression 2.1 has three sections here: The depression 2.1 is limited in the direction of the wheel by the conically configured section 2.3, which facilitates insertion of the insert 4. This is adjoined by the centering section 2.4, which is essentially parallel to the

Longitudinal axis 20 is configured. This is followed by the undercut 2.2, which the engagement of the hook-like portion 4.5 and thus the

Fixation of the insert 4 allowed. The insert 4 further has a portion whose inner wall facing the recess 2.1

Outside is designed substantially parallel to the longitudinal axis 20, and a conical section 4.6, which is based on the conical section 2.3 of the recess 2 and thus serves as a centering section 4.7 of the insert 4. In FIG. 10, the wheel hub is shown with an insert 4 which has a smaller outer diameter than the insert of FIGS. 7 to 9. The insert 4 thus does not rest on the radial section 2, as in FIG. 7, and the conical section 4. 4 of the insert 4 does not completely cover the conical section 2. 3 of the recess 2. 1. The enlargement of FIG. 11 shows essentially the same configuration as FIG. 9 in the region of the centering or fixing of the insert 4. The wall of the insert 4 is only of different thickness in the region of the conically configured section 2.3. The inserts 4 of the embodiments of Figures 7 to 9 and Figures 10 and 1 1 can be fixed in each case in the same radial section 2 and thus allow the assembly of different wheels. As can be seen fall during use turn the centering 4.7 and the conical section 4.6 together, ie the conical section 4.6 of the insert 4, which abuts the conical section 2.3 of the recess 2.1, serves to center the insert 4. In another embodiment For example, only the axis-parallel section of insert and recess for the purpose of centering the insert to each other.

FIGS. 12 to 14 show a sixth variant of the wheel hub according to the invention. The insert 4 is here in contrast to the variants of Figures 7 to 1 1 is not provided with radially encircling and the centering or fixing serving sections, but has sections of such areas, which serve only one function. In this case, the insert 4 in this embodiment in particular does not have a conical section. FIG. 13 shows a detail of the insert 4, which only has one

Centering section 4.7 and a hook-like section 4.5 has. FIG. 14 shows another side on which only the centering section 4.7 is present during use. The portions of the centering of the insert and the fixation of the insert on the hook-like portions are thus separated in this embodiment on a diameter of the insert from each other. That is, in an angle section is a portion of the insert for the centering, then an angle section for the fixation, etc. In between each functionally empty areas can be provided. The insert can be in the different configurations

for example, of a metal, e.g. consist of a sheet or a plastic or a combination of metal and plastic.

Claims

claims

1st wheel hub,

with a central portion extending substantially axially along a longitudinal axis,

with a radial section which extends substantially radially around the

Longitudinal axis extends, and

a centering portion extending substantially axially along the longitudinal axis,

wherein the central portion and the centering portion are arranged axially one behind the other, and

wherein the radial portion is disposed axially between an end of the central portion and an end of the centering portion,

wherein at least one insert is provided as a separate component, wherein the insert is designed to be cylindrical at least in sections, and wherein the insert forms the centering section,

characterized,

the radial section has at least one depression,

and

that the insert and the recess are designed and matched to one another such that the insert is arranged in sections in the recess.

2. wheel hub according to claim 1,

characterized,

the depression has at least one undercut.

3. wheel hub according to claim 1 or 2,

characterized, the depression has at least one essentially conically configured section.

4. wheel hub according to one of claims 1 to 3,

characterized,

the recess has at least one centering section.

5. Wheel hub according to one of claims 2 to 4,

characterized,

that the undercut of the recess directly or indirectly adjoins the substantially conically shaped portion of the recess, and / or

that the centering portion of the recess directly or indirectly adjoins the substantially conically shaped portion of the recess, and / or

that the centering portion of the recess directly or indirectly to the

Undercut of the depression adjacent,

and or

in that the centering section of the depression is arranged between the essentially conically configured section of the depression and the undercut of the depression.

6. wheel hub according to one of claims 1 to 5,

characterized,

the insert has at least one hook-like section.

7. wheel hub according to one of claims 1 to 6,

characterized,

the insert has at least one essentially conically configured section.

8. wheel hub according to one of claims 1 to 7,

characterized,

the insert has at least one centering section.

9. wheel hub according to one of claims 6 to 8,

characterized,

that the hook-like portion of the insert is directly or indirectly adjacent to the substantially conically shaped portion of the insert,

and or

the centering section of the insert adjoins, directly or indirectly, the substantially conically shaped section of the insert, and / or

that the centering portion of the insert is directly or indirectly adjacent to the hook-like portion of the insert,

and or

in that the centering section of the insert is arranged between the essentially conically configured section of the insert and the hook-like section of the insert.

10. Construction kit for a wheel hub according to one of claims 1 to 9, characterized

at least two inserts are provided, which differ from each other at least in the outer diameter of the centering section.