WO2020099630A1

WO2020099630A1 - Disc brake, particularly for motor vehicles, retaining element for a disc brake, hub and brake disc for a disc brake, and method for producing a disc brake

Info

Publication number: WO2020099630A1
Application number: PCT/EP2019/081470
Authority: WO
Inventors: Stefan Göpfarth; Tomasz Grabiec; Janek Wollert; Reinhold Mahr
Original assignee: ILJIN Bearing GmbH
Priority date: 2018-11-15
Filing date: 2019-11-15
Publication date: 2020-05-22
Also published as: DE102018128742A1

Abstract

The invention relates to a disc brake, particularly for motor vehicles, comprising a hub (10) and a brake disc (11), wherein the brake disc (11) has projections (12) and the hub (10) has recesses (17), or wherein the brake disc (11) has recesses (17) and the hub (10) has projections (12), and wherein each projection (12), especially an end region (15) of a projection (12), is arranged in one recess (17).

Description

Disc brake, in particular for motor vehicles, mounting element for a disc brake, hub and brake disc for a disc brake and

Disc brake manufacturing method

The present invention relates to a disc brake, in particular for motor vehicles, comprising a hub and a brake disc. Furthermore, the present invention relates to a mounting element for a disc brake, a hub for a disc brake, a brake disc for a disc brake and a method for producing a disc brake and a connection of a brake disc to a hub in a disc brake.

Technological background

Disc brakes are used in vehicles, in particular in motor vehicles, but also in rail vehicles, bicycles or motorcycles. A disc brake includes a brake disc attached to a hub or wheel hub. To brake the vehicle, in particular the motor vehicle, brake pads of a brake pad are pressed against the brake disc by means of a brake caliper. During a braking process, the kinetic energy of the motor vehicle is converted into heat via the friction that arises.

Disc brakes known from the prior art include a brake disc, a hub and a brake pot, via which the brake disc is connected to the hub. The brake pot has an essentially pot-like or hat-like configuration with an inner flange and an outer flange. The brake disc is connected to the wheel, in particular to the brake pot, on the outer flange. The brake disc / brake pot combination is in turn attached to the hub via the inner flange. For this purpose, the inner flange of the brake pot is usually clamped between an axial end side of the hub and a rim of the motor vehicle wheel and fixed by means of screws. Due to the massive brake pot, the rotating masses of known disc brakes are very large. In addition, the known brake discs are complex and expensive to manufacture due to the existing brake pot and material. Due to the heat absorption of the disc brakes during a braking operation, the brake disc can deform like a shell, in particular when the brake disc is attached to the brake cup on one side. This shell-like deformation is also called shielding. The shielding can lead to so-called noise vibration harshness effects (NVH effects), which collectively describe the audible or perceptible vibrations in motor vehicles or on machines. In addition, the deformation or shielding of the brake disc can also lead to a drag torque. The drag torque is caused by an insufficient separation of the brake linings from the brake disc, which means that even if the brake is not actuated, the brake linings are still in a light friction contact with the brake disc.

In order to minimize such shielding effects and the associated disadvantages, it is known in the prior art to design the brake disc as a so-called “floating brake disc”. In the case of a floating arrangement of the brake disc, recesses are machined into the outer diameter, in particular in the outer flange, of the brake pot In which material extensions of the brake disc are used with a radial play, the attachment of the brake disc to the brake plug via the material extensions inserted into the recesses results in a positive connection in the circumferential direction of the disc brake so that braking torques can be transmitted from the brake disc to the brake cup. In the radial direction of the disc brake, the material extensions are movably arranged in the recesses, so that the brake disc can thermally expand, which reduces the shielding. However, the floating brake disks known from the prior art are also complex to manufacture, since the material extensions have to be fastened to the brake disk by means of highly stressed screw connections. In addition, for production-related reasons, the material extensions cannot be stored in the recesses completely free of play with regard to the circumferential direction, so that so-called knocking effects can occur, that is to say when the direction of rotation of the disc brake is reversed, stop noises and vibrations due to the relative movement of the brake disc and brake pot, which cannot be completely avoided may occur.

Presentation of the invention: task, solution, advantages

The present invention has for its object to provide a disc brake, in particular for motor vehicles, which is easy to manufacture, has a lower weight and shows an optimized expansion behavior under thermal stress.

It is also an object of the present invention to provide a mounting element for a disc brake, a brake disc for a disc brake and a hub for a disc brake, with which the aforementioned advantages are achieved.

Another object of the present invention is to provide a method for producing a disc brake and a connection of a brake disc to a hub in a disc brake, with which the aforementioned advantages are obtained.

To achieve the object on which the invention is based, a disk brake, in particular for motor vehicles, comprising a hub and a brake disk is proposed, the brake disk having projections and the hub receptacles, or the brake disk receptacles and the Hub has projections, and wherein a projection, in particular an end portion of a projection, is arranged in each case in a receptacle.

The disc brake according to the invention thus comprises a hub and a brake disc. Furthermore, a brake caliper with a brake pad and a brake lining can also be provided, but it is not absolutely necessary for the disc brake according to the invention to have or comprise these elements.

The brake disk has projections and the hub has receptacles in which the projections of the brake disk are arranged, or alternatively the brake disk has receptacles and the hub has projections, the projections of the hub being arranged in the receptacles of the brake disk.

A protrusion is to be understood as a molding or a material extension which is arranged either on the brake disc or on the hub. The projection can be formed in one piece or in one piece with the hub or the brake disc. For example, in a cast or forged brake disc or in a cast or forged hub, the projections can already be an integral part of the cast or forged part. Alternatively, the projections can be connected to the brake disc or the hub by means of a material-locking or a form-fitting connection technique.

A receptacle denotes a recess, recess or groove in the brake disc or the hub. The receptacles are each designed to receive a projection, in particular an end region of a projection.

The projections can be arranged and aligned in a radial direction of the brake disc or the hub or can be at an angle to the radial direction, for example at a right angle to the radial direction, in an axial direction of the brake disc or the hub. The axial direction essentially corresponds to the axis of rotation of the disc brake Radial direction is aligned perpendicular to the axial direction of the disc brake.

A projection, in particular an end region of the projection, is arranged in a respective receptacle with particular advantage.

The disc brake therefore particularly preferably does not comprise a brake pot. It is further preferred that a receptacle and the projection arranged therein, in particular the end region of the projection, form a positive connection in a circumferential direction of the disc brake for transmitting torques, in particular braking torques.

The brake disk and the hub are thus directly connected to one another in that the brake disk has projections which are arranged in receptacles of the hub, or in that the hub has projections which are arranged in receptacles in the brake disk. In principle, mixed forms are also conceivable in which both the hub and the brake disk have receptacles and projections, protrusions of the brake disk each being arranged in receptacles of the hub and protrusions of the hub in receptacles of the brake disk.

At least two projections and at least two receptacles are preferably provided. However, at least four, more preferably at least five, very particularly preferably ten projections and receptacles can also be provided. The number of shots and protrusions can be even or odd.

The fact that a projection is arranged in each case in a receptacle creates a, in particular indirect or direct, form-fitting connection between the brake disc and the hub. A brake pot can therefore be dispensed with or no brake pot is provided. This simplifies the manufacture of the disc brake and the weight or rotating mass of the disc brake is reduced.

The receptacles are preferably distributed over the outer circumference of the hub on the hub and the projections are arranged on an inner edge of the brake disk, so that in each case a projection, in particular an end region of a projection, of the brake disk is arranged in a receptacle of the hub.

The basic shape of the hub is an essentially cylindrical component, which has an outer surface over an outer circumference, roughly corresponding to the outer surface of a cylinder, and two end faces. The receptacles are preferably arranged on or on the outer surface, and in particular not on or on the end faces.

The brake disc is essentially ring-shaped and has an inner recess in which the hub is arranged. The inner recess is surrounded by an inner edge of the brake disc, from which the projections preferably protrude.

Furthermore, it is preferably provided that the projections are directed inwards in a radial direction of the disc brake and / or that the receptacles are designed to be open to the outside in a radial direction of the disc brake.

The projections of the brake disk, which are directed inward in the radial direction, and the receptacles of the hub, which are open to the outside in the radial direction, produce a positive fit in the circumferential direction of the disk brake, which is suitable for absorbing and transmitting torques, in particular braking torques. In addition, the configuration of the receptacles open to the outside makes it possible for the projections to be arranged to be movable in the radial direction in the receptacles. The brake disc can thus be advantageous under thermal stress expand by the projections in the receptacles moving radially outwards.

The receptacles are preferably limited and / or defined by molded material of the hub.

A material molding can in particular be understood to mean a material projection or material extension arranged on the outer surface of the hub, which is either formed integrally or in one piece with the hub, or is arranged on the outer surface of the hub by means of a positive or material connection method.

A receptacle or recess is formed between two material formations in the circumferential direction of the hub, in each of which a projection of the brake disk is arranged so as to engage. Projection and receptacle, or projection and material formations form a positive connection in the circumferential direction, via which braking torques can be transmitted between the brake disc and the hub.

Seen in an axial direction of the disc brake, the receptacles can be open, in such a way that the projections of the brake disc can be inserted or inserted into the receptacles from the axial direction.

The projections, in particular the end regions of the projections, are particularly preferably essentially complementary to the receptacles. It can further preferably be provided that the receptacles and / or the projections, in particular the end regions of the projections, viewed in an axial direction of the disc brake, have an essentially rectangular basic shape.

Due to the complementary design of the projections, or the end regions of the projections, and the receptacles, the projections can do a great deal are inserted precisely into the receptacles, so that a particularly good positive fit between the receptacles and the projections for transmitting torque is provided in the circumferential direction. At the same time, thermal expansion of the brake disc can be made possible in a particularly advantageous manner. A positive movement in the circumferential direction between the projections and the recesses or the material formations, which define or limit the receptacles, largely or completely prevents a relative movement in the circumferential direction or a mutual rotation of the brake disc and hub.

Due to the design of the projections, in particular the end regions of the projections, and the receptacles with an essentially rectangular basic shape, they are also particularly easy to manufacture.

In principle, however, other basic shapes for configuring the receptacles or the projections or the end regions of the projections are also conceivable.

So it is also conceivable that the projections and the receptacles are designed in the manner of a dovetail connection. In such an embodiment, a radial play of the projections in the receptacles can also be permitted, so that thermal expansion of the brake discs is still possible to a certain extent.

Furthermore, at least one axial securing device can preferably be provided, the at least one axial securing device being designed to reduce or prevent a relative movement of the brake disk with respect to the hub in an axial direction of the disk brake.

If the receptacles are designed to be open in the axial direction of the disk brake, so that the projections of the brake disk can be inserted and inserted laterally into the receptacles from the axial direction, then one is preferred Axial securing is provided, which is designed such that after the projections have been inserted into the receptacles, the projections can be prevented from sliding out of the receptacles in the axial direction.

For this purpose, the axial securing device can preferably be designed to produce a positive connection, in particular in the axial direction.

It is conceivable, if not preferred, for example, that in the receptacles, in particular on a floor of the respective receptacle, in the

Ribs aligned circumferential direction are provided, and that a corresponding groove is machined in an outer surface of the end region of the respective projection. For connecting the hub to the

The brake disc can then be used in a reshaping process or, for example, in a cold stretching process.

Another embodiment of the axial lock consists in welding or providing a weld seam between the brake disc and the hub.

It can particularly preferably be provided that the at least one axial securing device is designed to produce a snap connection.

In the case of an axial securing device which is designed to produce a snap connection, the projections, in particular the end regions of the projections, of the brake disk are inserted into the receptacles of the hub from the axial direction in order to produce the disk brake. The axial lock is designed in such a way that when the protrusions are completely inserted into the receptacles, a snap connection is produced, which provides a positive connection in the axial direction and thus prevents a relative movement of the brake disc with the hub in the axial direction.

It can preferably be provided that the axial securing device comprises an elastic wing element. The elastic wing element or an end region of the elastic wing element hooks behind a contact surface of the respective projection or behind a contact surface of the respective receptacles or behind a contact surface of the material projections defining the receptacles when the projections are completely inserted into the receptacles.

For example, an axial lock designed as an elastic wing element can be arranged in the receptacle and a groove, groove or the like can be provided in the end region of the projection, so that the elastic wing element engages in the groove or groove when the projections are completely arranged in the receptacles, so that a relative movement in the axial direction between the brake disc and the hub is prevented.

In addition, the axial securing device can additionally or alternatively be designed as a stop, the stop being a material extension on the projection and / or on the hub.

It can preferably be provided that the disc brake comprises a tensioning element, which is designed to preload the brake disk in a circumferential direction with respect to the hub.

The tensioning element is advantageously designed to produce a constant preload of the brake disk with respect to the hub by applying a pressure or a force acting in the circumferential direction to the brake disk, so that the brake disk and the hub are constantly in a positive engagement in the circumferential direction stand.

In particular, the projections are constantly biased or pressed against the material formations of the hub that limit or define the receptacles, so that no knocking or knocking noises occur when the direction of rotation of the disc brake is reversed. The tensioning element is preferably a spring element, more preferably an elastic tab or an elastic wing element, and / or the tensioning element is the axial securing means, in particular the elastic wing element.

In a conceivable embodiment, the tensioning element, in particular the elastic spring element or the elastic tab, is arranged on one of the material formations of the hub that delimit or define the receptacles and is designed to exert a force on the projection arranged in the receptacle in such a way that the projection on the opposite one , the admission limiting material molding is pressed. The force exerted on the protrusion ensures that the protrusion is always in positive engagement or in contact with at least one of the material projections, even when the direction of rotation of the disc brake is reversed, so that knocking noises are prevented or reduced.

It is also possible that the tensioning element is the axial securing device and furthermore in particular the elastic wing element.

It is conceivable that a clamping element arranged in particular on a material molding of the hub is designed as an elastic tab or as an elastic wing element and presses the projection against the opposing material molding and that at the same time an end region of the elastic wing element or the elastic tab in a groove or groove in engages the end region of the projection, and thus leads to an axial securing of the brake disc in the axial direction.

However, it can also be provided that the axial securing device, in particular the elastic wing element or the elastic tab, is arranged in the bottom of the receptacle and that at the same time a tensioning element, which can also be designed as an elastic tab or as an elastic wing element, in a material molding limiting the receptacle the hub is arranged. The axial securing arranged in the bottom of the receptacle, in particular that elastic wing element or the elastic tab, then merely ensures that the brake disk on the hub is secured against relative movement in the axial direction, while the tensioning element, in particular the elastic tab or the elastic wing element, exerts only a force on the projection in the material molding, in order to pre-tension it against the opposing material formations.

In addition, folding elements can be provided, one folding element being arranged in each of the receptacles and enclosing the projection arranged in the receptacle, in particular the end region of the projection, at least partially, in particular in the circumferential direction.

In other words, it is preferably provided that a further component is inserted between the projection and the receptacle or the material formations delimiting the receptacle. The folding element is preferably complementary to the receptacle with respect to an outside and complementary to the projection with respect to an inside, so that the protrusion is arranged in the folding element and that the folding element is in turn arranged in the receptacle.

The folding element thus represents, so to speak, an intermediate element between the projection and the receptacle. However, the folding element is not a brake pot or the like. Rather, a folding element is provided for each combination of receptacle and projection arranged therein. The folding element preferably at least partially surrounds the projection in the circumferential direction, so that a positive connection is provided in the circumferential direction between the folding element and the projection. Furthermore, the folding element is arranged in the receptacle in such a way that a positive fit is also achieved in the circumferential direction between the folding element and the material formations that define or limit the receptacle. Braking or torque between the brake disc and the hub can thus be transmitted to the hub via the projections of the brake disc, the holding element and the receptacle, in particular the material formations that delimit the receptacle.

It can further preferably be provided that the holding element comprises the axial securing device and / or the clamping element.

The mounting element can be designed relatively freely, so that different axial locks and / or clamping elements can be provided depending on the application requirements.

With a further advantage, the mounting element is essentially U-shaped and has a base and two legs, the projection being arranged between the legs.

Due to the U-shaped configuration, the holding element engages around the projection at least in the circumferential direction and is also arranged in a precisely fitting manner in the receptacle. The base of the mounting element lies against a bottom of the receptacle, while the two legs rest against the material projections that laterally define the receptacle. The holding element can be a metal stamped part which is punched out of a metal which is essentially designed as a flat material. The essentially flat metal material is bent into a U-shape by a reshaping process, so that it can be arranged in the receptacle and that the projection can be arranged in a space between the legs of the U-shaped holding element.

It can further be provided that the tensioning element and / or the axial securing means is arranged in at least one of the legs of the holding element and / or that the tensioning element and / or the axial securing means is arranged in the base. In a preferred embodiment, the axial securing device is arranged in the base. In this case, it can in particular be provided that the axial securing device is designed as an elastic wing element which projects out of or protrudes from the base of the U-shaped holding element. When the projections are inserted laterally from the axial direction into the space between the legs of the mounting element, which in turn is arranged in the receptacle, the elastic wing element is first stretched or pressed in the direction of the base until the projection completely into the space between the legs of the support element and thus is also inserted into the receptacle.

When the fully inserted position of the projection is reached, the elastic wing element relaxes, so that an end region of the wing element engages, for example, in a groove or groove in an outer surface of the projection and thus prevents the projection from sliding back out of the receptacle or out of the holding element.

In addition, a tensioning element, which can also be designed as an elastic tab or as an elastic wing element, can be arranged in one of the legs of the mounting element.

When the projection is inserted into the space between the legs of the holding element and thus into the receptacle of the hub, the tensioning element designed as an elastic wing element or as an elastic tab is tensioned. In contrast to the axial securing designed as an elastic wing element, however, no groove or groove is provided in the projection into which the tensioning element designed as an elastic wing element or elastic tab could relax.

Rather, the tensioning element remains tensioned in the position of the projection completely pushed into the holding element and presses the projection in the direction of the opposite leg of the Holding element and thus also in the direction of the opposite material molding of the receptacle. This pretensioning provides a constant contact or a permanent positive connection between the projection and the receptacle or the material formations that delimit the receptacle. In the above-described embodiment, the axial securing device and the tensioning element are designed as two separate components of the mounting element, even if their basic shape in both cases represents an elastic tab or an elastic wing element. In particular, two elastic tabs or wing elements can thus be provided.

In principle, however, it is also possible for only one elastic wing element to be arranged in the holding element, which acts both as an axial securing means and as a tensioning element. In this case, the groove or groove provided for the axial securing must be designed accordingly, so that even when the elastic wing element designed as a combined tensioning element and axial securing is relaxed, a certain pre-tension remains with which the projection in the receptacle is applied. In particular, in the embodiment with an elastic wing element as a combination of the tensioning element and axial securing, the wing element is arranged in one leg of the mounting element.

Furthermore, it is also conceivable that elastic tabs or wing elements are provided in both legs of the mounting element. These tabs or wing elements can each be designed as a combination of a tensioning element and an axial securing device.

In addition, however, an axial securing device can also be arranged in the bottom of the mounting element, which is also designed as an elastic wing element.

It is further advantageously provided that the legs have holding sections, the holding sections preferably being bow-shaped or are formed in brackets and, more preferably, partially encompass the areas of the hub delimiting the recess, in particular the material formations, at least in the circumferential direction of the hub.

Holding portions or parts or ends of holding portions in the circumferential direction of the disc brake thus protrude from the legs of the holding element and at least partially encompass the material formations which limit the receptacle.

By partially gripping the material formations in the circumferential direction, the holding element is fixed in the axial direction in the respective receptacle of the hub. If the projection is then inserted into the mounting element or into the space between the legs of the mounting element until the axial securing device engages, the projection is also axially secured in the mounting element by the axial securing device, so that overall a relative axial displacement of the projection relative to the receptacle or the Hub is prevented.

It can be provided with further advantage that the holding element has a stop, the stop being arranged essentially perpendicular to the base and the legs.

The stop can be another axial lock. This is particularly advantageous if an axial securing device designed as an elastic wing element is provided. An axial securing element designed as an elastic wing element prevents an axial displacement of the projection relative to the receptacle in one direction, so that it may be necessary to prevent an axial displacement of the projections relative to the receptacles also in the opposite direction. For this purpose, a stop can be provided in particular on the floor or on the legs of the mounting element. The stop is oriented in particular in the radial direction of the disc brake. When the projections are inserted into the holding element arranged in the respective receptacle, each of the projections is first pushed over the elastic wing element of the axial lock until the elastic wing element relaxes in the fully inserted position of the respective projection and engages in a groove or groove of the projection, so that axial displacement against the direction of insertion is prevented. In order to further limit a further axial displacement in the direction of insertion, the stop against which the projection comes to rest is provided. The stop thus prevents an axial displacement of the projection or the brake disc relative to the hub in the direction of insertion beyond the fully inserted position. The axial lock prevents axial displacement in the opposite direction.

In the embodiment described above, the mounting element is designed such that it is first inserted into the respectively assigned receptacle of the hub for mounting the disc brake. Then the brake disc is then arranged on the hub, in that the projections of the brake disc are laterally inserted from the axial direction into the mounting elements and thus also into the receptacles until the axial securing device engages.

In principle, an embodiment of the mounting element as an essentially U-shaped mounting element is also conceivable, which can be placed on an associated projection of the brake disk before the brake disk is mounted on the hub. The holding element then has holding sections which at least partially encompass the projection in the circumferential direction, so that the holding element is fixed to the respective projection in the axial direction. For this purpose, the holding sections can have ends which protrude from the legs of the holding element in the circumferential direction of the disc brake and which abut the projection on one side or encompass it on both sides. In the event of one-sided abutment of the ends of the holding sections, a stop on the base or the legs can be provided, which rests on the opposite side of the projection, so that the ends and the stop together at least partially encompass the projection in the circumferential direction on both sides. For further assembly, the projections of the brake disc with the mounting elements arranged thereon are pushed into the receptacles of the hub from the axial direction. To prevent a relative axial displacement of the projections in the receptacles, and thus the brake disc with respect to the hub, the mounting element can have an axial securing device, which has one or more in or on the legs and / or in or on the base, in particular on an extension section of the Base, arranged elastic wing elements or elastic tabs. If the projections and the holding elements arranged thereon are pushed completely into the receptacles, then the axial securing means, in particular the wing elements or tabs of the axial securing means, form-fit with the areas of the hub delimiting the receptacle, in particular with the molded material.

It can preferably be provided that the brake disc comprises a friction ring, and that the projections are arranged on a friction ring, and / or that the brake disc has two friction rings and an insert element arranged between the friction rings, and that the projections on at least one friction ring and / or are arranged on the insert element.

The insert element can, for example, be designed as a cooling element or have cooling elements.

The projections can thus be arranged, for example, on one of the friction rings, so that the brake disk is connected to the hub essentially on one side via the projections and the receptacles.

It is also possible for the projections to be attached exclusively to the insert element, for example to the cooling elements, so that the brake disc is attached centrally or centrally to the hub. Mixed forms are also conceivable, so that, for example, part of the projections is attached to one friction ring, another part to the other friction ring and / or to the insert element, in particular to the cooling elements.

In the case of the disc brake described above, the projections on the brake disc and the receptacles are arranged on the hub. In principle, however, it can also be provided that the hub includes the projections and that the brake disc has the receptacles. Apart from this exchange of projections and receptacles, a disc brake designed in this way is identical to the previously described variant. In particular, the above-described axial locks, tensioning elements and mounting elements can be designed essentially identically.

A further solution to the problem on which the invention is based consists in a mounting element for a disk brake as described above.

The holding element can be designed according to one of the above-described embodiments.

The mounting element is particularly preferably essentially U-shaped and has a base and two legs.

Furthermore, it can be provided that the holding element has an axial securing device, the axial securing device preferably being designed as an elastic wing element.

In addition, it can be provided that the axial securing device is arranged in the base and / or in one leg of the holding element.

It is preferably provided that the elastic wing element is bent out of the base and / or out of the leg and protrudes into an intermediate space between the legs. It can be provided with further advantage that the holding element has a tensioning element, in particular a spring element, the spring element preferably being designed as an elastic tab and / or as an elastic wing element.

It can be provided with further advantage that the tensioning element and the axial securing device are the same component, and / or that different components, in particular different elastic tabs and / or different elastic wing elements, are provided for the tensioning element and for the axial securing device.

In addition, it can be provided that the holding element has a stop, the stop being arranged essentially perpendicular to the base and the legs.

It can be provided with further advantage that the legs have holding sections, the holding sections preferably being bow-shaped or clip-shaped.

A further solution to the objects on which the invention is based is to provide a hub for a disk brake as described above, the hub having receptacles, the receptacles being arranged on the hub over an outer circumference of the hub.

It is preferably provided that the receptacles are designed to be open to the outside in a radial direction of the hub.

It can further be provided that the receptacles are limited and / or defined by the molded material of the hub. A still further solution to the problem on which the invention is based is to provide a brake disc for a disc brake as described above.

The brake disc can be designed according to one of the above-described embodiments.

Particularly preferably, the brake disc has projections on an inner edge which are designed to be used in receptacles of a hub described above.

A still further solution to the object on which the invention is based is to provide a method for producing a disk brake as described above, comprising the steps:

Arranging a brake disk comprising projections adjacent to a hub comprising receptacles, the brake disk and the hub being arranged with respect to an axial direction about a common axis,

if necessary, aligning the brake disc and / or the hub so that the projections and the recesses are aligned with one another,

Bring the brake disc and the hub together in the axial direction so that the projections are inserted into the receptacles.

It can preferably be provided that the method further comprises at least one of the following steps:

Inserting essentially U-shaped mounting elements into the receptacles of the hub,

- Bringing together the brake disc and the hub in the axial direction so that the projections are inserted into the mounting elements in the receptacles. The step of

- Manufacture of a securing device to prevent and / or reduce relative movements of the brake disk with respect to the hub in an axial direction of the disk brake by means of an axial securing device arranged in the holding element

intended.

An additional solution to the problem on which the invention is based is to provide a connection of a brake disc to a hub in a previously described disc brake.

The connection can have the features and properties explained above, in particular the connection can have projections and receptacles, and a corresponding mounting element can also be provided in the connection.

Brief description of the figures

The invention is explained in more detail below with reference to the figures.

Show it:

1 shows a disc brake with a brake disc and a hub, FIG. 2 shows a brake disc,

3 shows a hub,

4 is a bracket element,

5 shows a disc brake with a brake disc, a hub and a mounting element,

Fig. 6 is a front view of a projection of a brake disc in a

Inclusion of a hub with a mounting element,

Fig. 7 is a rear view of a projection of a brake disc in a

Inclusion of a hub with a mounting element, Fig. 8 shows a cross section through a projection in a receptacle

Hub with a mounting element,

Fig. 9 shows a further cross section through a projection in a

Inclusion of a hub with a mounting element,

10 shows a further mounting element,

11 shows a mounting element arranged on a projection,

Fig. 12 is a front view of a projection of a brake disc in a

Inclusion of a hub with a mounting element, and

Fig. 13 is a rear view of a projection of a brake disc in a

Inclusion of a hub with a mounting element.

Detailed description of the figures

1 shows a disk brake 100 for motor vehicles comprising a hub 10 and a brake disk 11. The brake disk 11 has projections 12. The projections 12 are arranged on an inner edge 13 of the brake disc 11 and are directed inwards in a radial direction 14 of the disc brake 100. The projections 12 are formed in one piece with the brake disc 11 and have an end region 15. The hub 10 comprises receptacles 17 which are arranged on an outer surface 18 over an outer circumference 19 of the hub 10. The receptacles 17 are delimited inwards by a base 20 in the radial direction 14 and by two material projections 21 in a circumferential direction 22. The projections 12 or the end region 15 of the projections 12 are designed to be complementary to the receptacles 17. A projection 12 of the brake disk 11 is arranged in each case in a receptacle 17 of the hub 10. The projections 12, in particular the end regions 15 of the projections 12, with the receptacles 17, in particular with the material formations 21 delimiting the receptacle 17, provide a form fit between the brake disc 11 and the hub 10 in the circumferential direction 22, via which torque or braking torque of the brake disc 11 can be transferred to the hub 10. The end regions 15 of the projections 12 have an essentially rectangular basic shape. Accordingly, the receptacle 17 is also essentially rectangular. The receptacles 17 are also designed to be open to the outside in the radial direction 14, so that the projections 12, or the end regions 15 of the projections 12, can slide outward in the receptacles 17 in the radial direction 14 when the brake disk 11 is thermally expanded. It is therefore a floating brake disk 100. As can be clearly seen from FIG. 1, the brake disk 100 has no brake pot. Rather, the brake disc 100 is connected directly to the hub 10 for the transmission of braking and torque via the projections 12 and the receptacles 17.

Fig. 2 shows a brake disc 11 in a perspective view. The brake disc 11 has two friction rings 23, 24 which are spaced apart and arranged adjacent to one another. An insert element 25, which has cooling elements 26, is arranged between the two friction rings 23, 24. The projections 12 are arranged on the inner edge 13 of the insert element 25 of the brake disc 11. The end regions 15 of the projections 12 have an essentially rectangular basic shape. The projections 12 widen outward in the radial direction 14 toward the brake disk 11, so that essentially semicircular recesses 27 are formed between the projections 12.

3 shows a hub 10. The hub 10 has material formations 21 on the outer surface 18 over the outer circumference 19. Two material projections 21 each define and delimit a receptacle 17, the receptacle 17 being delimited inward by a base 20 in the radial direction 14. The hub 10 of FIG. 3 can be assembled with the brake disc 11 of FIG. 2 to form a disc brake 100 according to FIG. 1 by arranging the brake disc 11 of FIG. 2 adjacent to the hub 10 of FIG. 3 so that the brake disc 11 and the hub 10 are arranged about a common axis with respect to an axial direction 28, which runs perpendicular to the plane of the figure. If necessary, then by mutual twisting Align the brake disc 11 and the hub 10 with respect to one another such that the projections 12 and the recesses 17, as shown in FIG. 1, are aligned with one another. The brake disk 11 and the hub 10 are then fed towards one another in the axial direction 28, so that the projections 12 are inserted into the receptacle 17. In this way, a brake disc 100 according to FIG. 1 is obtained.

FIG. 4 shows a holding element 29. The holding element 29 is designed as an approximately U-shaped, stamped metal part 30 and has a base 31 and two legs 32, 33, which are formed by a reshaping process at approximately a right angle to the base 31 are aligned.

Between the two legs 32, 33 and the base 31, an intermediate space 34 is defined, which, as explained in more detail with reference to FIGS. 5 to 9, is suitable for receiving a projection 12 or an end region 15 of a projection 12. The holding element 29 has a holding section 35 on each of the legs 32, 33, which are essentially in the form of a bow or clip. A clamping element 36 is arranged in one of the legs 33. The tensioning element 36 is designed as an elastic tab 37 and is formed by punching out or cutting out and bending out of the leg 33. The elastic tab 37 projects into the intermediate space 34 of the mounting element 29. An axial securing device 38 is arranged in the base 31, which is designed as an elastic wing element 39. The elastic wing element 39, like the elastic flap 37, is formed by punching out or cutting out and bending out a region of the base 31 in the direction of the intermediate space 34 from the holding element 29. In addition, the holding element 29 has a stop 40, which has likewise been produced by shaping from the stamped metal part 30 of the holding element 29. The stop 40 is at a substantially right angle to the base 31 and the legs 32, 33 of the holding element 29 and extends approximately parallel to the ends 41 of the holding sections 35. 5 shows a variant of a disc brake 100. The disc brake 100 of FIG. 5 differs from the disc brake 100 of FIG. 1 only in that folding elements 29 according to FIG. 4 are arranged between the projections 12, in particular the end regions 15 of the projections 12, and the receptacles 17.

6 shows a perspective front view of a projection 12 of the brake disk 11, which is arranged in a receptacle 17. In addition, a folding element 29 is arranged in the receptacle 17 in such a way that the essentially bow-shaped folding sections 35 with the ends 41 at least partially encompass the regions of the hub 10 delimiting the receptacles 17, in particular the material formations 21 defining the receptacles 17, in the circumferential direction 22 . The base 31 of the folding element 29 lies directly against the bottom 20 of the receptacle 17. The legs 32, 33 are in direct contact with the material formations 21 delimiting the receptacle 17. The end region 15 of the projection 12 is received in the intermediate space 34 between the base 31 and the legs 32, 33, so that the projection 12 over the legs 32, 33 together with the material projections 21 in the circumferential direction 22 causes a positive connection for the transmission of braking or torque between the brake disc 11 and the hub 10.

FIG. 7 shows a perspective rear view of the projection 12 and the receptacle 17 of FIG. 6. The projection 12 is fastened to the insert element 25, which has cooling elements 26. The folding element 29 is arranged in the receptacle 17 and the projection 12, or the end region 15 of the projection 12, is in turn arranged in the intermediate space 34 of the folding element 29. The stop 40 of the folding element 29 limits a relative movement of the projection 12 in the axial direction 28 out of the plane of the figure. The folding element 29 is held on the hub 10 by means of the folding sections 35.

8 shows a cross section through an end region 15 of a projection 12 arranged in a receptacle 17 in the direction of the radial direction. The Holding element 29 is held on the material formations 21 of the hub 10 in the axial direction 28 via the bracket-shaped or clamp-shaped holding sections 35. To connect the brake disc 11 to the hub 10, the projections 12 can be inserted into or against the axial direction 28 from one side into the intermediate space 34 between the legs 32, 33 of the mounting element 29, the insertion movement being limited by the stop 40 . A tensioning element 36 designed as an elastic tab 37 is arranged on one of the legs 33. The elastic tab 37 is bent out of the leg 33 in the direction of the space 34 between the legs 32, 33. When the projection 12, or the end region 15 of the projection 12, is inserted into the intermediate space 34, the tensioning element 36 is tensioned and exerts a force or a prestress on the projection 12 in the circumferential direction 22 on the opposite leg 32 and thus on the opposite material molding 21 out.

9 shows a further cross section in the direction of the circumferential direction 22 through the end region 15 of the projection 12 arranged in the receptacle 17. The projection 12 or the end region 15 of the projection 12 is held in or against the axial direction 28 by the stop 40 . In the opposite direction, a relative movement of the projection 12 with respect to the receptacle 17 is prevented by the axial securing means 38 designed as an elastic wing element 39. The elastic wing element 39 is bent out of the base 31 of the mounting element 29. A lower surface 16 of the end region 15 of the projection 12 has a groove 43 or groove 44, which forms a counter bearing to the elastic wing element 39 of the axial securing device 38. When the end region 15 of the projection 12 is inserted into the intermediate space 34 of the mounting element 29, the elastic wing element 39 of the axial securing device 38 is first pressed downward in the direction of the bottom 20 of the receptacle 17. As soon as the projection 12 is completely inserted into the receptacle 17 by the stop 40, the elastic wing element 39 relaxes, so that one end 45 of the elastic wing element 39 engages in the groove 43 or groove 44 of the projection 12. Together, the stop 40 and the elastic prevent Wing element 39 or the axial securing means 38 a relative movement of the brake disk 11 with respect to the hub 10 in the axial direction 28.

10 to 13 show a further folding element 46. The folding element 46 has a base 47 and two legs 48, 49. A stop 50 is provided on one side of the base 47. Opposite the stop 50, the base 47 comprises an extension section 51. An axial securing device 52 is incorporated into the extension section 51 as an elastic wing element 53 (FIGS. 11 and 13). The legs 48, 49 have holding sections 54. According to FIG. 13, ends 56 of the folded sections 54 encompass the projection 12 on one side and at least partially in the circumferential direction 22. Stop 50 and the ends 56 of the folded sections 54 axially secure the folding element 46 on the projection 12. On the legs 48, 49 are In addition, elastic tabs 55 are provided as part of the axial securing means 52 for securing a snap connection.

FIG. 11 shows how the end region 15 of the projection 12 is arranged in the folding element 46. A relative movement of the folding element 46 with respect to the projection 12 is brought about by the interaction of the stop 50 and the ends 56 of the folding sections 54.

13 and 14 show how the projection 12 together with the folding element 46 is arranged in the receptacles 17.

For axially securing the folding element 46 in the receptacle 17, the elastic tabs 55 of the legs 48, 49 and the elastic wing element 53 interact with the regions 57 delimiting the receptacle. In particular, the elastic tabs 55 bring about a form fit with the material formations 21, whereas the elastic wing element 53 according to FIG. 13 is in a form fit with the area 57 adjacent to the bottom 20 of the receptacle 17. List of reference numbers

100 disc brake

10 hub

11 brake disc

12 head start

13 inner edge

14 radial direction

15 end region

16 lower surface

17 shots

18 outer surface

19 outer circumference

20 floor

21 Material molding

22 circumferential direction

23 friction ring

24 friction ring

25 insert element

26 cooling element

27 recess

28 axial direction

29 mounting element

30 metal part

31 base

32 legs

33 legs

34 space

35 holding section

36 clamping element Elastic tab

Axial lock

Elastic wing element

attack

End of the holding section

area

groove

Groove

End of the wing element

Bracket element

Base

leg

attack

Extension section

Axial lock

Elastic wing element

Holding section

Elastic tab

End of the holding section

Recording area

Claims

1. Disc brake (100), in particular for motor vehicles, comprising a hub (10) and a brake disc (11), characterized in that the brake disc (11) has projections (12) and the hub (10) has receptacles (17) or that the brake disc (11) has receptacles (17) and the hub (10) has projections (12), and that in each case one projection (12), in particular one end region (15) of a projection (12), is arranged in one receptacle (17) is.

2. Disc brake (100) according to claim 1, characterized in that the disc brake does not comprise a brake pot, and / or that in each case a receptacle (17) and the projection (12) arranged therein, in particular the end region (15) of the projection (12) , in a circumferential direction (22) of the disc brake form a positive connection for transmitting torques, in particular braking torques.

3. Disc brake (100) according to claim 1 or 2, characterized in that the receptacles (17) over an outer circumference (19) of the hub (10) are arranged on the hub (10), that the projections (12) on one Inner edge (13) of the brake disc (11) are arranged, and that in each case a projection (12), in particular an end region (15) of a projection (12), of the brake disc (11) in a respective receptacle (17) of the hub (10) is arranged.

4. Disc brake (100) according to one of the preceding claims, characterized in that the projections (12) in a radial direction (14) of the disc brake (100) are directed inwards, and / or that the receptacles (17) in a radial direction ( 14) of the disc brake (100) are designed to be open to the outside, and / or that the receptacles (17) are limited and / or defined by material molding (21) of the hub (10).

5. Disc brake (100) according to one of the preceding claims, characterized in that at least one axial lock (38, 52) is provided, the at least one axial lock (38, 52) being designed, a relative movement of the brake disc (11) relative to the hub (10) in an axial direction (28) to reduce or prevent the disc brake.

6. Disc brake (100) according to claim 5, characterized in that the at least one axial lock (38, 52) is designed to produce a positive fit, the at least one axial lock (38, 52) preferably being designed to produce a snap connection, and / or that the axial securing device (38, 52) comprises an elastic wing element (39, 53).

7. Disc brake (100) according to one of the preceding claims, characterized in that a clamping element (36) is provided, which is designed to bias the brake disc (11) in a circumferential direction (22) relative to the hub (10), the clamping element (36) is preferably a spring element, particularly preferably an elastic tab (37, 55), the tensioning element (36) being further preferably the axial securing device (38, 52), in particular the elastic wing element (39, 53).

8. Disc brake (100) according to one of the preceding claims, characterized in that mounting elements (29, 46) are provided, wherein a mounting element (29, 46) is arranged in each case in one of the receptacles (17) and in the receptacle ( 17) arranged projection (12), in particular the end region (15) of the projection (12), at least partially, in particular in the circumferential direction (22).

9. Disc brake (100) according to claim 8, characterized in that the mounting element (29, 46) comprises the axial lock (38, 52) and / or the tensioning element (36), and / or that the mounting element (29, 46) in Is essentially U-shaped and has a base (31, 47) and two legs (32, 33, 48, 49), the projection (12) between the Legs (32, 33, 48, 49) is arranged, and / or that the tensioning element (36) and / or the axial securing device (38, 52) is arranged in one of the legs (32, 33, 48, 49), and / or that the tensioning element (36) and / or the axial securing device (38, 52) is arranged in the base (31, 47).

10. Disc brake (100) according to claim 9, characterized in that the legs (32, 33, 48, 49) have holding sections (35, 54), the holding sections (35, 54) preferably being bow-shaped or clip-shaped and more preferably regions of the hub (10) delimiting the receptacles (21), in particular the material formations (21), at least partially encompass the circumferential direction (22) of the hub (10), and / or that the mounting element (29, 46) has a stop (40 , 50), the stop (40, 50) being arranged substantially perpendicular to the base (31, 47) and the legs (32, 33, 48, 49).

11. Bracket element (29, 46) for a disc brake (100) according to one of claims 1 to 10.

12. Hub (10) for a disc brake (100) according to one of claims 1 to 10, characterized in that the hub (10) has receptacles (17), the receptacles (17) over an outer circumference (19) of the hub ( 10) are arranged on the hub (10).

13. Brake disc (11) for a disc brake (100) according to one of claims 1 to 10.

14. A method for producing a disc brake (100) according to any one of claims 1 to 10, comprising the steps

- Arranging a brake disc (11) comprising projections (12) adjacent to a hub (10) comprising receptacles (17), the Brake disc (11) and the hub (10) are arranged with respect to an axial direction (28) about a common axis,

- If necessary, aligning the brake disc (11) and / or the hub (10) so that the projections (12) and the receptacles (17) are aligned with one another,

- Bringing together the brake disc (11) and the hub (10) in the axial direction (28) so that the projections (12) are inserted into the receptacles (17).