DE102020115959A1 - Holding device for a damper device of a belt drive - Google Patents

Abstract

The invention relates to a holding device (1) for a damper device (2,3) of a belt drive (4), having at least the following components: at least one bearing bracket (5,6) each with a pivot axis (7,8) for each bearing receptacle (10,11) a damper device (2,3); and a fixing element (12, 13) for fixing the holding device (1) in a gear housing (14), the gear housing (14) having a first housing wall (15) and an axially opposite second housing wall (16). The holding device (1) is primarily characterized in that: - of the bearing bracket (5, 6) of the holding device (1) an axially fixed continuous connection between the first housing wall (15) and the second housing wall (16) in the said gear housing (14) is formed and the holding device (1) is supported axially on both sides transversely to the pivot axis (7, 8) on the housing walls (15, 16); and / or- furthermore a transversal fixing element (17,18) for transversely fixing the holding device (1) in said gear housing (14), the bearing brackets (5,6) are fixed to one another by means of the transversal fixing element (17,18), and the transverse fixing element (17, 18) is formed separately from the gear housing (14). With the holding device proposed here, the component costs and the assembly costs can be reduced.

Description

• - zumindest eine Lagerbrücke mit jeweils einer Schwenkachse für jeweils eine Lageraufnahme einer Dämpfereinrichtung; und
• - ein Fixierelement zum Fixieren der Halteeinrichtung in einem Getriebegehäuse, wobei das Getriebegehäuse eine erste Gehäusewandung und eine axial gegenüberliegende zweite Gehäusewandung aufweist. Die Halteeinrichtung ist vor allem dadurch gekennzeichnet, dass:
• - von der Lagerbrücke der Halteeinrichtung eine in sich axial fixierte durchgehende Verbindung zwischen der ersten Gehäusewandung und der zweiten Gehäusewandung in dem genannten Getriebegehäuse gebildet ist und die Halteeinrichtung axial-beidseits quer zu der Schwenkachse an den Gehäusewandungen abgestützt ist; und/oder
• - weiterhin ein transversales Fixierelement zum transversalen Fixieren der Halteeinrichtung in dem genannten Getriebegehäuse, die Lagerbrücken mittels des transversalen Fixierelements zueinander fixiert sind, und das transversale Fixierelement separat von dem Getriebegehäuse gebildet ist. Die Erfindung betrifft weiterhin ein Umschlingungsgetriebe mit einer solchen Halteeinrichtung für einen Antriebsstrang, einen Antriebsstrang mit einem solchen Umschlingungsgetriebe, sowie ein Kraftfahrzeug mit einem solchen Antriebsstrang.

The invention relates to a holding device for a damper device of a belt drive, having at least the following components:

• - At least one bearing bracket, each with a pivot axis for each bearing receptacle of a damper device; and
• - A fixing element for fixing the holding device in a gear housing, the gear housing having a first housing wall and an axially opposite second housing wall. The holding device is primarily characterized in that:
• the bearing bridge of the holding device forms an axially fixed continuous connection between the first housing wall and the second housing wall in the said gear housing and the holding device is supported axially on both sides transversely to the pivot axis on the housing walls; and or
• - Furthermore, a transverse fixing element for the transverse fixing of the holding device in the said gear housing, the bearing brackets are fixed to one another by means of the transverse fixing element, and the transverse fixing element is formed separately from the gear housing. The invention further relates to a belt drive with such a holding device for a drive train, a drive train with such a belt drive, and a motor vehicle with such a drive train.

Belt transmissions, for example CVT, are known from the prior art, in which for damping the belt or at least one strand of the belt, a damper device, for example a slide rail (contact on both sides) or a slide shoe or a slide guide ( unilateral, mostly internal system) is used. Such a damper device used on a belt is for example in the DE 100 17 005 A1 disclosed. Such a damper device has a bearing receptacle, by means of which the damper device is accommodated in a pivotable manner on a holding device, also as a pivoting means (or more specifically referred to as a holding tube). For example in the EP 2 372 189 A1 a belt drive is shown in which two damper devices are provided for the two strands and each of the damper devices is received by a (separate) holding device. Each of the holding devices comprises a cooling line which is inserted and screwed onto a first housing wall (here the housing pot). Furthermore, the holding device comprises a bearing bracket which is applied to an oil pipe and extends as far as the axially opposite housing wall (here the housing cover) and rests axially there. In this way it is achieved that the axial position of the damper devices is defined by means of the bearing bridge resting on the housing cover with respect to the housing cover. Thus, a relative axial displaceability must be maintained between the oil pipe and the bearing bracket in order to avoid tension in the holding device. Due to the price pressure in the sales market, there is a desire to continue to reduce parts and assembly costs.

Proceeding from this, the present invention is based on the object of at least partially overcoming the disadvantages known from the prior art. The features according to the invention emerge from the independent claims, for which advantageous configurations are shown in the dependent claims. The features of the claims can be combined in any technically meaningful manner, in which case the explanations from the following description and features from the figures can also be used, which include additional embodiments of the invention.

• - zumindest eine Lagerbrücke mit jeweils einer Schwenkachse für jeweils eine Lageraufnahme einer Dämpfereinrichtung; und
• - ein Fixierelement zum Fixieren der Halteeinrichtung in einem Getriebegehäuse, wobei das Getriebegehäuse eine erste Gehäusewandung und eine axial gegenüberliegende zweite Gehäusewandung aufweist.

The invention relates to a holding device for a damper device of a belt drive, having at least the following components:

• - At least one bearing bracket, each with a pivot axis for each bearing receptacle of a damper device; and
• - A fixing element for fixing the holding device in a gear housing, the gear housing having a first housing wall and an axially opposite second housing wall.

The holding device is primarily characterized in that the bearing bracket of the holding device forms an axially fixed continuous connection between the first housing wall and the second housing wall in the said gear housing and the holding device is supported axially on both sides, transversely to the pivot axis, on the housing walls .

In the following, reference is made to the named swivel axis if the axial direction, radial direction or the direction of rotation and corresponding terms are used without explicitly indicating otherwise. The transverse direction with respect to the bearing brackets is rigidly defined, and as the direction of the shortest connection between two pivot axes of a holding device. The transversal direction with respect to the damper devices is defined as being moved along with it, as described above. The direction of travel is correspondingly rigidly defined or always moved transversely to the transverse direction and the axial direction. In a preferred embodiment, if the effective circles of the conical pulley pairs of a belt drive are the same, the rigid and moving transverse direction and the running direction are congruent. The designations left and right relate to the ends of the bearing bracket on the wall side in relation to the pivot axis and serve purely to simplify the explanations. Unless explicitly stated otherwise, ordinal numbers used in the preceding and following description are only used to clearly distinguish between them and do not reflect any order or ranking of the components identified. An ordinal number greater than one does not necessarily mean that another such component must be present.

The holding device proposed here is set up, as explained at the outset, so that a damper device for the strand of a belt of a belt drive is pivotably mounted in such a way that the damper device can follow the movement of the strand to be damped. In one embodiment of the holding device, the bearing device comprises a single bearing bracket for a (single) damper device and in another embodiment two bearing brackets for each one (single) damper device. Such a bearing bracket has a (theoretical) pivot axis about which the damper device can be pivoted. It should be pointed out at this point that the damper device in one embodiment does not perform a pure rotational movement about the pivot axis, but also a translational movement, so that an oval pivot movement results. In such an embodiment, the bearing receptacle of the damper device is set up for a transverse movement, for example as an elongated hole or U-shaped with an assembly opening that is open in the transversely inward direction.

Furthermore, the holding device has a fixing element, by means of which the holding device can be fixed in a gear housing. The gear housing, in which the holding device can be fixed, has a first housing wall (for example a housing cover) and an axially opposite second housing wall (for example a housing pot). In one embodiment, the holding device is fixed directly or indirectly to one of the two axially opposite housing walls. In one embodiment of the transmission housing, only a housing cover and a housing pot are provided as wall components.

It is now proposed that the bearing bracket of the holding device is axially fixed in itself, for example formed in one piece or fixed in itself without play (for example screwed), the bearing bracket extending between the first housing wall and the second housing wall of the gearbox in question. In one embodiment, the holding device is completely preassembled and only needs to be fixed in the gear housing via the fixing element. In another embodiment, the holding device is assembled in itself during assembly in the transmission housing. The holding device is set up in such a way that it is supported several times in relation to the pivot axis on the two axially opposite housing walls. Forces transverse to the pivot axis of the bearing bracket are thus absorbed axially on both sides of the bearing bracket by the transmission housing.

In one embodiment, at least one of the housing walls has a positioning receptacle, for example a recess or an elevation, which is received by a corresponding positioning element of the holding device or which receives this corresponding positioning element of the holding device. In one embodiment, for example, the bearing bracket is received with a pin-like extension as a positioning element in a recess in the respective housing wall.

Since the bearing bracket is formed axially fixed in itself, the bearing bracket has extreme rigidity transversely to the pivot axis. A reduced material strength is therefore required. It is therefore possible to use less expensive material and / or less material, with the result that the component costs for the holding device can be reduced. In addition, the holding device can be installed very easily in the gear housing, in particular in an embodiment in which the holding device is completely preassembled.

• - eine erste Lagerbrücke mit einer ersten Schwenkachse für eine erste Lageraufnahme einer ersten Dämpfereinrichtung;
• - eine zweite Lagerbrücke mit einer zweiten Schwenkachse für eine zweite Lageraufnahme einer zweiten Dämpfereinrichtung;
• - ein axiales Fixierelement zum axialen Fixieren der Halteeinrichtung in einem Getriebegehäuse, wobei das Getriebegehäuse eine erste Gehäusewandung und eine axial gegenüberliegende zweite Gehäusewandung aufweist;
• - ein transversales Fixierelement zum transversalen Fixieren der Halteeinrichtung in dem genannten Getriebegehäuse, die Lagerbrücken mittels des transversalen Fixierelements zueinander fixiert sind.

According to a further aspect, an alternative holding device for two damper devices of a belt drive is proposed, having at least the following components:

• - A first bearing bracket with a first pivot axis for a first bearing receptacle of a first damper device;
• - A second bearing bracket with a second pivot axis for a second bearing receptacle of a second damper device;
• - an axial fixing element for axially fixing the holding device in a gear housing, the gear housing having a first housing wall and an axially opposite second housing wall;
• a transversal fixing element for the transversal fixing of the holding device in the said gear housing, the bearing brackets being fixed to one another by means of the transversal fixing element.

This holding device is primarily characterized in that the transverse fixing element is formed separately from the gear housing.

The holding device proposed here is set up, as described above, to form a bearing element for damper devices, this holding device (always) comprising two bearing brackets, each with a pivot axis for one (that is, a total of two) damper device. Here, too, an axial fixing element is again provided, by means of which the bearing brackets are axially fixed in the gear housing. Furthermore, a transverse fixing element is provided, by means of which the bearing brackets of the holding device are fixed transversely to one another and in the aforementioned gear housing. In one embodiment, the holding device according to the previous embodiment is included.

It is now proposed here that the transverse fixing element is not part of the transmission housing, for example is not formed by a housing wall, but rather forms a component of the holding device. Since the transverse fixing element is formed separately from the gear housing, increased mechanical strength of the holding device itself or of the two bearing brackets is achieved without a corresponding adaptation of the housing wall (s) of the gear housing. This reduces the complexity of the requirements placed on the shape of the gearbox housing. Because the gear housing is often a cast part and is therefore associated with high initial costs, which are only profitable from a very large number of units, considerable costs can be saved if the same gear housing can always be used for (depending on the requirements) different holding devices and / or it can be used with the production of the gearbox housing can be started at a point in time at which the requirements for the holding device have not yet been finalized. This also enables the production costs to be reduced. Furthermore, with the decreasing complexity of the gear housing, a direct cost advantage is achieved as well as a more diverse usability of a cast part, once developed, because changes to the holding device do not necessarily lead to changes to the gear housing.

Due to the increased rigidity of the bearing brackets of the holding device as a result of the separately formed transverse fixing element without conditions for the gear housing, the component costs can be reduced, for example due to the choice of material and / or the amount of material, and at the same time good assemblability is maintained.

It is further proposed in an advantageous embodiment of the holding device that the transverse fixing element is formed in one piece with the bearing brackets,
wherein the holding device is preferably axially fixed via the transverse fixing element by means of the axial fixing element.

In this embodiment, the transverse fixing element is formed in one piece with the bearing brackets, for example as a component milled from the solid or as a cast part (for example aluminum die-cast), preferably an injection-molded component (made of thermoplastic material). With the transverse fixing element formed in one piece with the bearing brackets, assembly in the gear housing is particularly simple. This reduces assembly costs and reduces the effort involved in quality assurance. In addition, mechanical strength is high with less use of material or less material strength, and is constant regardless of assembly tolerances.

In a preferred embodiment, the holding device can be fixed to the gear housing in such a way that the transversal fixing element comprises the axial fixing element, for example as through holes through which assembly screws for axially fixing the holding device can be inserted. In one embodiment, such mounting screws also form a transverse fixation of the holding device to the gear housing. In another embodiment, a separate positioning element is provided, for example a pin-like projection for insertion into a recess in the relevant housing wall or, conversely, a recess in the transverse fixing element for receiving a corresponding projection on the housing wall of the transmission housing. In one embodiment, positioning elements are only provided on one of the two axially opposite housing walls.

In one embodiment, the holding device comprises a first transverse fixing element in the first gear housing and a second transverse fixing element in the second housing wall, so that the bearing brackets are axially fixed to one another on both sides by means of transverse fixing elements.

In one embodiment, the holding device is axially spaced from the respective other housing wall, in which no axial fixing element is provided. In another embodiment, the holding device is fixed, preferably fixed purely axially, via the transverse fixing element on this side and / or a positioning element on this side of the holding device. In one embodiment, the holding device is installed between the two axially opposite housing walls with little play or even free of play, wherein in a play-free embodiment, any oversize (due to tolerances) is resiliently accommodated in the holding device. For example, this is possible as a result of a reduced rigidity of the holding device, without this leading to tension between the bearing bracket and the bearing receptacle of the damper device. In another embodiment, an elastic element is provided between the holding device and at least one of the two axially opposite housing walls.

It is further proposed in an advantageous embodiment of the holding device that the transverse fixing element is formed by the bearing brackets as a component that can be mounted separately.

In this alternative embodiment, the transverse fixing element or at least one of the two transverse fixing elements, preferably the transverse fixing element on the housing pot side, is formed as a separately mountable component. It should be pointed out that the transverse fixing element is not a component of the transmission housing. In one embodiment, a transverse fixing element formed in one piece with the bearing brackets is provided axially on one side, for example in the case of the housing pot, and the separately mountable transverse fixing element is provided, for example on the housing pot side. This is advantageous, for example, with tight installation space requirements, so that a damper device can, for example, be applied purely axially to the bearing bracket in question, even if a movement stop is provided on both sides of the bearing bracket to limit the axial mobility of the damper device. In one embodiment, such an axial movement stop is formed in one piece by the separately mountable transverse fixing element. In another embodiment, the accessibility for the axial fixing element is better in the case of a transversal fixing element which can be fixed subsequently. In one embodiment, a fastening element for fastening the separately mountable transverse fixing element of the holding device forms a positioning element for the defined positioning of the bearing brackets in the gear housing. Such a positioning element is, for example, the screw head of a fastening screw for the separately mountable transverse fixing element.

It is further proposed in an advantageous embodiment of the holding device that the holding device comprises a supply line and a supply opening for a liquid operating medium,
wherein the feed line is preferably integrated into a bearing bracket, and / or
wherein the holding device preferably comprises two bearing brackets and a single feed line, and particularly preferably a single feed opening.

It is proposed here that the holding device comprises a supply line for a liquid operating medium, for example an oil for lubricating and / or cooling the bearing between the bearing bracket and the bearing receptacle of the damper device and / or the entire belt transmission. The feed line is preferably already preassembled with the holding device and thus the ability to mount the holding device in a gear housing is simplified.

In a preferred embodiment, the supply line is integrated in a bearing bracket, for example as a central bore or as a separate line which is inserted into the central bore of the bearing bracket. In another embodiment, the feed line is arranged radially outside the bearing bracket, preferably in an embodiment of the holding device with two bearing brackets transversely between the two bearing brackets.

In a preferred embodiment, in which the holding device comprises two bearing brackets, a single supply line is provided, the single supply line being integrated, for example, into one of the two bearing brackets. In a particularly preferred embodiment, a single feed opening is provided, for example in one of the two bearing bridges. It should be pointed out that a single feed opening is defined solely by its axial position in relation to the holding device and, in one embodiment, comprises several, for example two radially opposite (for example nozzle-like) outlets for the liquid operating medium.

In a preferred embodiment, a connection to at least one supply line for the supply line is formed by a positioning element, the supply line being an external line or a line integrated into the transmission housing. For example, the corresponding positioning element comprises a seal and an axially form-fitting receptacle (for example in the manner of a hose coupling).

• - eine Getriebeeingangswelle mit einem ersten Kegelscheibenpaar;
• - eine Getriebeausgangswelle mit einem zweiten Kegelscheibenpaar;
• - ein Umschlingungsmittel, mittels welchem das erste Kegelscheibenpaar mit dem zweiten Kegelscheibenpaar drehmomentübertragend verbunden ist;
• - ein Getriebegehäuse mit einer ersten Gehäusewandung und einer axial gegenüberliegenden zweiten Gehäusewandung; und

zumindest eine, bevorzugt zwei, Dämpfereinrichtungen, welche mittels einer Halteeinrichtung nach einer Ausführungsform gemäß der obigen Beschreibung gelagert sind,
wobei die zumindest eine Dämpfereinrichtung dämpfend an einem Trum des Umschlingungsmittels anliegt.According to a further aspect, a belt transmission for a drive train is proposed, having at least the following components:

• - A transmission input shaft with a first pair of conical disks;
• - A transmission output shaft with a second pair of conical disks;
• - A belt by means of which the first pair of conical pulleys is connected to the second pair of conical pulleys in a torque-transmitting manner;
• - A gear housing with a first housing wall and an axially opposite second housing wall; and

at least one, preferably two, damper devices, which are mounted by means of a holding device according to an embodiment according to the description above,
wherein the at least one damper device rests in a damping manner on a strand of the belt.

With the belt transmission proposed here, a torque can be transmitted from a transmission input shaft to a transmission output shaft, and vice versa, in a step-up or step-down manner, the transmission being continuously adjustable at least in some areas. A belt transmission is, for example, a so-called CVT [continuous variable transmission] with a traction mechanism or with a push link belt. The belt is, for example, a multi-link chain. The looping means is shifted in opposite directions on conical pulley pairs from radially inside to radially outward and vice versa, so that a changed effective circle is established on a respective conical pulley pair. The ratio of the effective circles results in a translation of the torque to be transmitted. The two active circles are connected to one another by means of an upper and a lower strand, namely a load strand, also called a tension strand or a push strand, and a slack strand of the looping means.

In the ideal state, the strands of the belt between the two active circles form a tangential alignment. This tangential alignment is superimposed by induced shaft vibrations, for example caused by the finite pitch of the belt and as a result of the early departure from the effective circle caused by the escape acceleration of the belt.

The damper device is designed to rest with its at least one sliding surface against a corresponding contact surface of a strand to be damped, for example the load strand, in such a way that such shaft vibrations are suppressed or at least dampened. Furthermore, a transverse guide is also provided for an application, that is to say in a plane parallel to the looping circle formed by the looping means, a guide surface on one or both sides. A slide channel is thus formed in a slide rail with an outer slide surface and an inner slide surface. The strand is thus guided in a parallel plane to the sliding surfaces and the running direction of the strand lies in this parallel plane. For the best possible damping, the sliding surface is designed to be as close as possible to the strand of the belt. Alternatively, the damper device is axially fixed and the guided strand is (axially) movable relative to it.

So that the damper device can follow the alignment of the strand, a holding device is provided as a swivel bearing with a swivel axis defined by it, on which the damper device rests with its bearing receptacle and can thus execute the (for example oval) swivel movement as described above.

The components of the belt drive are mostly enclosed and / or supported by a gear housing. For example, the holding device for the bearing receptacle is fastened to the gear housing as a holding tube and / or is movably supported. The transmission input shaft and the transmission output shaft extend from the outside into the transmission housing and are preferably supported on the transmission housing by means of bearings. The pairs of conical disks are housed by means of the gear housing, and the gear housing preferably forms the abutment for the axial actuation of the movable conical disks (loose disks). Furthermore, the gear housing preferably forms connections for attaching the belt drive and, for example, for the supply of hydraulic fluid. For this purpose, the transmission housing has a large number of boundary conditions and must fit into a given installation space. This interaction results in an inside housing wall which restricts the shape and movement of the components of the belt drive.

With the holding device proposed here, the damper device can be easily mounted in a belt drive and the costs for the components and assembly can be reduced.

• - die zweite Gehäusewandung, und/oder
• - ein Einbauelement, bevorzugt einer Parksperre, bei der zweiten Gehäusewandung.

It is also proposed in an advantageous embodiment of the belt transmission that a first positioning element, preferably two first positioning elements, the Holding device engages positively in the first housing wall,
and preferably a second positioning element of the holding device engages positively in:

• - The second housing wall, and / or
• - An installation element, preferably a parking lock, in the second housing wall.

It is proposed here that the holding device can be positioned in a defined manner relative to the first housing wall by means of a first positioning element (preferably two first positioning elements), the positioning elements interacting positively with the first housing wall. The positioning elements are, for example, depressions or projections which are brought into engagement with corresponding projections or depressions on the first housing wall when the holding device is fixed by means of the axial fixing element. Such a positioning element defines the position of the bearing brackets transversely, preferably also radially in relation to the respective pivot axis. The task of positioning is separated from the task of axial fixing, with a corresponding passage opening for the axial fixing element preferably being provided, which has a corresponding diameter or is formed as an elongated hole so that the axial fixing element does not impair the positioning of the bearing bracket or the bearing brackets . In another embodiment, at least one of the axial fixing elements is also designed as a positioning element, for example in that a through hole for a first axial fixing element is designed with little play and a second through hole for a second axial fixing element is formed as an elongated hole. In one embodiment, the second of the first positioning elements, which is in positive engagement with the first housing wall, is designed with play, for example a recess in the first housing wall is designed as an elongated hole. In an alternative embodiment, a multiple fit (for example double fit) of the holding device is permissible in that an oversize, for example due to tolerance, is accommodated by means of elastic deformation. This is made possible, for example, with a one-piece design of the holding device, in that there (otherwise inevitably occurring) assembly-related tolerances are excluded.

In a preferred embodiment, a further positioning element is provided, which is arranged axially opposite the positioning element described above and defines the position of the holding device in the belt drive in relation to the second housing wall. For this purpose, the further positioning element is directly in positive engagement with the second housing wall, for example, as described above, the positioning element described above, or such a further positioning element is in positive engagement with an installation element. Such a built-in element is, for example, a (preferably fixed) component of a parking lock which is set up to block the belt drive in order to prevent the motor vehicle from rolling away when used in a motor vehicle, for example. In one embodiment, a positioning element is (directly) in positive engagement with the second housing wall and another positioning element with an installation element in the second housing wall. The other positioning element is preferably not connected to a fixing element at the same time, but is brought into purely form-fitting engagement with the second housing wall when a housing cover is connected, which for example forms the first housing wall.

It is also proposed in an advantageous embodiment of the belt drive that the axial fixing element, and preferably also the only transverse fixing element in a holding device with two bearing brackets, be arranged and fixed to the first housing wall only.

In the embodiment proposed here, the axial fixing element is set up solely for fixing the holding device to the first housing wall, for example the housing pot. This has the advantage that the mounting of the holding device or the mounting-safe positioning of the holding device in the belt drive takes place as long as the second housing wall is not yet closed. The second housing wall is then, for example, the housing pot and the first housing wall is formed by a housing cover. In a particularly preferred embodiment, the transverse fixing element is also arranged only in the first housing wall, it being noted that the transverse fixing element is formed separately from the gear housing, but is preferably formed in one piece with the bearing brackets. This is advantageous for the assembly of the two damper devices, for example, when the installation space is limited.

According to a further aspect, a drive train is proposed, having at least one drive machine, each with a machine shaft, at least one consumer and a belt drive according to an embodiment according to the description above,
wherein the machine shaft for torque transmission can be connected to the at least one consumer with, preferably continuously, variable translation by means of the belt drive.

The drive train is set up to transmit a torque provided by a drive machine, for example an internal combustion engine and / or an electric drive machine, and output via its machine shaft, for example the combustion shaft and / or the (electrical) rotor shaft, for use as required, i.e. taking into account the required speed and the required torque. One use is, for example, an electrical generator to provide electrical energy. In order to transmit the torque in a targeted manner and / or by means of a gearbox with different ratios, the use of the belt drive described above is particularly advantageous because a large ratio spread can be achieved in a small space and the drive machine can be operated with a small optimal speed range. Conversely, inertial energy introduced by, for example, a drive wheel can also be implemented by means of the belt drive to an electrical generator for recuperation, i.e. the electrical storage of braking energy, with a correspondingly configured torque transmission train. Furthermore, in a preferred embodiment, a plurality of drive machines are provided, which are connected in series or in parallel or can be operated decoupled from one another and whose torque can be made available as required by means of a belt drive according to the description above. One application example is a hybrid drive comprising an electric drive machine and an internal combustion engine.

The belt drive for the drive train can be manufactured with inexpensive components and low assembly costs.

According to a further aspect, a motor vehicle is proposed, having at least one propulsion wheel, which can be driven by means of a drive train according to an embodiment according to the description above.

Most motor vehicles nowadays have a front-wheel drive and partially arrange the drive machine, for example an internal combustion engine and / or an electric drive machine, in front of the driver's cab and transversely to the main direction of travel. The radial installation space is particularly small with such an arrangement and it is therefore particularly advantageous to use a small-sized belt transmission. The use of a belt drive in motorized two-wheelers is similar, for which, compared to previously known two-wheelers, always increased performance is required with the same installation space. This problem is exacerbated with the hybridization of drive trains.

This problem is exacerbated in the case of passenger cars in the small car class according to the European classification. The units used in a passenger car of the small car class are not significantly reduced in size compared to passenger cars of larger car classes. Nevertheless, the space available for small cars is much smaller. A comparable problem occurs with hybrid vehicles in which a plurality of drive machines and clutches are provided in the drive train, so that the overall installation space is reduced.

The drive train proposed here for the motor vehicle can be implemented with a belt drive that can be manufactured at low cost, the ease of installation being improved or not impaired.

Passenger cars are assigned to a vehicle class according to, for example, size, price, weight and performance, this definition being subject to constant change according to the needs of the market. In the US market, vehicles in the subcompact car class according to the European classification are assigned to the subcompact car class, and in the British market they correspond to the supermini class or the city car class. Examples of the small car class are a Volkswagen up! or a Renault Twingo. Examples of the small car class are an Alfa Romeo MiTo, Volkswagen Polo, Ford Ka + or Renault Clio. Well-known hybrid vehicles are the BMW 330e or the Toyota Yaris Hybrid. An Audi A6 50 TFSI e or a BMW X2 xDrive25e, for example, are known as mild hybrids.

• 1: eine Halteeinrichtung in einer ersten Ausführungsform in einem Getriebegehäuse;
• 2: eine Halteeinrichtung in einer zweiten Ausführungsform in einem Getriebegehäuse;
• 3: eine Halteeinrichtung in einer dritten Ausführungsform in einem Getriebegehäuse;
• 4: eine Halteeinrichtung in einer vierten Ausführungsform in einem Getriebegehäuse;
• 5: eine Halteeinrichtung in einer fünften Ausführungsform in einem Getriebegehäuse;
• 6: eine Halteeinrichtung in einer sechsten Ausführungsform in einem Getriebegehäuse;
• 7: eine Halteeinrichtung in einer siebten Ausführungsform in einem Getriebegehäuse;
• 8: eine Halteeinrichtung in perspektivischer Ansicht gemäß 7;
• 9: eine Halteeinrichtung in einer achten Ausführungsform in einem Getriebegehäuse;
• 10: ein Umschlingungsgetriebe mit einer Halteeinrichtung in einem Getriebegehäuse; und
• 11: ein Antriebsstrang in einem Kraftfahrzeug mit Umschlingungsgetriebe.

The invention described above is explained in detail below against the relevant technical background with reference to the accompanying drawings, which show preferred embodiments. The invention is in no way restricted by the purely schematic drawings, it being noted that the drawings are not dimensionally accurate and are not suitable for defining size relationships. It is shown in

• 1 : a holding device in a first embodiment in a transmission housing;
• 2 : a holding device in a second embodiment in a transmission housing;
• 3 : a holding device in a third embodiment in a transmission housing;
• 4th : a holding device in a fourth embodiment in a gear housing;
• 5 : a holding device in a fifth embodiment in a transmission housing;
• 6th : a holding device in a sixth embodiment in a transmission housing;
• 7th : a holding device in a seventh embodiment in a transmission housing;
• 8th : a holding device in a perspective view according to FIG 7th ;
• 9 : a holding device in an eighth embodiment in a transmission housing;
• 10 : a belt transmission with a holding device in a transmission housing; and
• 11 : a drive train in a motor vehicle with a belt transmission.

In 1 is a holding device 1 in a gearbox 14th shown in a schematic side view. The transverse direction 9 runs vertically upwards as shown, the axial direction 42 runs horizontally from left to right and the direction of travel 43 points out of the image plane. The holding device 1 includes a first storage bridge 5 and a second storage bridge 6th , which in the transverse direction 9 spaced in a gear housing 14th are arranged. The first storage bridge 5 has a first pivot axis 7th and the second storage bridge 6th a second pivot axis 8th on. Furthermore, the first bearing bridge 5 a first bearing seat 44 for the pivotable mounting of a first damper device 2 a belt drive 4th on (compare 10 ). The second bearing bridge also has 6th a second bearing seat 45 for the pivotable mounting of a second damper device 3 on. For an (optional) axial mounting of the first damper device 2 or the second damper device 3 is at the respective warehouse location 44 , 45 axially shown on the left a (left) bearing jaw 46 and, as shown on the right, another (right) bearing jaw 47 provided, with pars-pro-toto the reference numerals (here and in the following figures) only on the first bearing bracket 5 Marked are. For fixing the first bearing bridge 5 and the second storage bridge 6th in the gearbox 14th includes the first storage bridge 5 a first fixing element 12th and the second storage bridge 6th a second fixing element 13th , here for example a tab with a through hole. The gearbox 14th has a first housing wall 15th , for example a housing cover, and a second housing wall 16 , for example a housing pot, the first bearing bracket 5 over the first fixing element 12th to the first housing wall 15th by means of a first mounting screw 48 and the second storage bridge 6th via the second fixing element 13th to the first housing wall 15th by means of a second mounting screw 49 are fixed.

The position in the transverse direction 9 the first storage bridge 5 in the gearbox 14th is by means of a left (first) positioning element 29 and a right (first) positioning element 31 in cooperation with a respective corresponding positioning fixture 50 definitely. The same applies to the position of the second bearing bridge 6th in the gearbox 14th by means of a left (second) positioning element 30th and a right (second) positioning element 32 definitely. In the embodiment shown, the left first positioning element 29 with the first storage bridge 5 and the left second positioning element 30th with the second storage bridge 6th (preferably in one piece) like a pin in the axial direction 42 from the respective storage bridge 5 , 6th formed outstanding, so that the left first positioning element 29 and the left second positioning element 30th form-fit in the first housing wall 15th intervention. The right first positioning element 31 and the right second positioning element 32 are also each with the first storage bridge 5 and the second storage bridge 6th (preferably in one piece) like a pin in the axial direction 42 outstandingly formed and, as shown, to the right of the respective right bearing jaw 47 arranged. In one embodiment, the right bearing jaw is 47 axially with the first housing wall 15th brought into plant. The right first positioning element 31 the first storage bridge 5 is here form-fitting in a positioning fixture 50 of a built-in element 33 , for example a parking lock 34 , added and the right second positioning element 32 the second storage bridge 6th is in a positioning fixture 50 the second housing wall 16 positively recorded. Thus, the holding device 1 axially on both sides transversely to the first pivot axis 7th and the second pivot axis 8th on the first housing wall 15th and the second housing wall 16 supported.

Here is (optional and independent of the embodiment of the holding device 1 ) in the first storage bridge 5 in the axial direction 42 a feed line 19th for a liquid operating medium formed centrally, with from outside the gear housing 14th the operating medium, for example oil, through the supply line 19th via a feed opening 20th (not shown here, see 8th ) into the gearbox 14th is feasible. The corresponding positioning fixture is (optional) here 50 for the (left) first positioning element 29 at the same time a line connection (preferably a form-fitting coupling) for the (left) first positioning element 29 integrally formed connection piece.

In 2 is a holding device 1 in a second embodiment in a gear housing 14th shown in schematic side view. The view corresponds to that of 1 . In contrast to the embodiment of the holding device there 1 are the first storage bridge here 5 and the second Storage bridge 6th by means of a bar-shaped transverse (left) fixing element 17th Formed in one piece or pre-assembled in advance. Furthermore, the transverse left fixing element comprises 17th the axial first fixing element 12th and the axial second fixing element 13th , which as shown in the transverse direction 9 from the first pivot axis 7th and the second pivot axis 8th are included. The axial fixing elements 12th , 13th are through holes and for receiving the first mounting screw 48 and the second mounting screw 49 set up so that the holding device 1 on the (here first) housing wall 15th is fixed.

In this embodiment (regardless of the embodiment) is the holding device 1 by means of a (left) first positioning element 29 and a (left) second positioning element 30th in the transverse direction 9 fixed. The left first positioning element 29 , as in 1 , is with the first storage bridge 5 in one piece, pin-like in the axial direction 42 , formed so that the left first positioning element 29 form-fitting, according to a plug-socket system, in the first housing wall 15th intervenes. The (left) second positioning element 30th is here of at least one (preferably a single one) of the two axial fixing elements 12th , 13th educated. In this embodiment, the transversal (left) fixing element interacts with each other 17th and the axial fixing elements 12th , 13th the position of the first storage bridge 5 , but also the second storage bridge 6th , set. In this advantageous embodiment, the (left) first positioning element 29 at the feed line 19th formed so that no additional installation space is required here and / or a connection to an (external or in the transmission housing 14th integrated) supply line (not shown) directly from the (left) first positioning element 29 is trained.

The transversal (left) fixing element is purely optional 17th with a stiffener (for example ribs) against bending of the bearing brackets 5 , 6th under a shear load on the bearing seat 44 , 45 executed.

In 3 is a holding device 1 in a third embodiment in a gear housing 14th shown in schematic side view. The view corresponds to that of 1 and 2 . In contrast to the embodiments of the holding device there 1 is that by means of the transverse left fixation element 17th integral with the first bearing bridge 5 and the second storage bridge 6th formed or assembled in advance holding device 1 between the two axially opposite housing walls 15th , 16 Installed with such little play that mechanical support against overloads is achieved. Such is the axial fixation of the holding device 1 achieved. The axial fixing elements 12th , 13th are from the axial end faces of the bearing brackets 5 , 6th educated. Here is (optional) between the first storage bridge 5 and the second housing wall 16 in the axial direction 42 an additional built-in element 33 , for example a parking lock 34 , arranged. The holding device 1 is here via the (left) first positioning element already described above 29 the first storage bridge 5 and via the (left) second positioning element 30th the second storage bridge 6th in the first housing wall 15th in the transverse direction 9 positioned. In one embodiment, the positioning receptacle 50 for the (left) second positioning element 30th or for the (left) first positioning element 29 in the transverse direction 9 designed as an elongated hole so that tension due to a double fit is avoided. Alternatively, the holding device is 1 by means of the two positioning fixtures 50 clearly positioned for the two left positioning elements 29,30, one for the position of the bearing seat 44 , 45 negligible tension is generated or preferably between the positioning elements 29, 30 and the positioning receptacles 50 one for aligning the bearing seats 44 , 45 there is negligible play.

In 4th is a holding device 1 in a fourth embodiment in a gear housing 14th shown in schematic side view. The view corresponds to that and the embodiment is similar to that of FIG 3 . Unlike the embodiments there, this holding device 1 the first bearing seat 44 the first storage bridge 5 and the second bearing seat 45 the second storage bridge 6th in the axial direction 42 only from the left bearing jaw 46 limited and to the right of the opposite (here second) housing wall 16 or a built-in element arranged there 33 limited.

In 5 is a holding device 1 in a fifth embodiment in a gear housing 14th shown in schematic side view. The view corresponds to and the embodiment is similar to that of FIG 3 and 4th . In contrast to the embodiments of the holding device there 1 is the one-piece or pre-assembled from the first bearing bracket 5 and the second storage bridge 6th formed holding device 1 between the two axially opposite housing walls 15th , 16 installed with little axial play, with between the first bearing bracket 5 and the second housing wall 16 an additional built-in element 33 , for example a parking lock 34 , is arranged. The built-in element 33 includes a corresponding positioning fixture 50 for the right first positioning element 31 the first storage bridge 5 . The second storage bridge 6th is with the right second positioning element 32 in a corresponding positioning fixture 50 in the second housing wall 16 recorded. Because of each Cross support of the storage bridges on both sides 5 , 6th is the transverse (left) fixation element 17th here with the same or even less deflection of the bearing bridges 5 , 6th can be carried out without stiffeners (compare 2 until 4th ).

In 6th is a holding device 1 in a sixth embodiment in a gear housing 14th shown in schematic side view. The view corresponds to and the embodiment is similar to that of FIG 4th and 5 .

As in the embodiment of 4th are the first bearing seat here 44 the first storage bridge 5 and the second bearing seat 45 the second storage bridge 6th in the axial direction 42 only from the left bearing jaw 46 and to the right of the opposite (here second) housing wall 16 or a built-in element arranged there 33 limited. In addition, as in 5 a corresponding positioning fixture 50 for the right first positioning element 31 the first storage bridge 5 (here in a built-in element 33 ) and the second bearing bridge 6th is with the right second positioning element 32 in a corresponding positioning fixture 50 in the second housing wall 16 recorded.

In 7th is a holding device 1 in a seventh embodiment in a gear housing 14th shown in schematic side view. The view corresponds to that of 1 until 6th . The holding device is different from the embodiments there 1 here in one piece or pre-assembled consisting of the first bearing bracket 5 , the second storage bridge 6th , the transverse left fixation element 17th and a (here additional) transversal right fixing element 18th educated. The holding device 1 is here without an axial contact or (based on the respective swivel axis 7th , 8th ) radial support on the other (here second) housing wall 16 executed sufficiently stiffened in itself.

In 8th is an optional embodiment of a holding device 1 in a perspective view according to the configuration according to 7th shown, the side at the first housing wall 15th is at the front in the illustration. Here includes the first storage bridge 5 next to the integrated supply line 19th the feed opening 20th in the area of the first bearing seat 44 , whereby the (here visible or only) feed opening 20th roughly opposite to the running direction 43 is aligned so that the operating means on the belt 26th or in the gearbox 14th got. The pin-like left first positioning element can also be clearly seen 29 for inclusion in a housing wall 15th , 16 . The right bearing jaws 47 of the first bearing seat 44 and the second bearing seat 45 are in this embodiment integral with the transverse right fixing element 18th educated.

In 9 is a holding device 1 in an eighth embodiment in a gear housing 14th shown in schematic side view. The view corresponds to that and the embodiment is similar to that of FIG 7th . The holding device is different from the embodiments there 1 here with a separate transversal right fixing element 18th executed, which here in the axial direction 42 by means of a first fixing screw 51 to the first storage bridge 5 and by means of a second fixing screw 52 to the second storage bridge 6th is fixed. The transversely right fixing element protrudes (optional) 18th in the transverse direction 9 about the bearing seat 44 the first storage bridge 5 and about the bearing seat 45 the second storage bridge 6th so that the transversely right fixing element 18th the right bearing jaw in each case 47 of the first bearing seat 44 and the second bearing seat 45 forms. Furthermore, in one embodiment there is the separate transverse right fixing element 18th made of a different material than the bearing bridges 5 , 6th executed. This embodiment enables a damper device to be pushed on purely axially 2 , 3 on the respective bearing seat 44 , 45 , with the transversal right fixing element only afterwards 18th with the storage bridges 5 , 6th connected.

In 10 is schematically a holding device 1 according to an embodiment according to 1 until 9 in a belt drive 4th enclosed by a gear housing 14th shown, being a first strand 27 a belt 26th by means of the first damper device 2 is led and thus dampened and a second strand 28 a belt 26th by means of the second damper device 3 is guided and muffled. The sling 26th connects a first pair of conical disks to transmit torque 24 with a second pair of conical disks 25th . On the first pair of conical disks 24 , which (here, for example, connected to a transmission input shaft in a torque-transmitting manner 22nd ) about an input-side axis of rotation 53 is rotatable, is due to appropriate spacing in the axial direction 42 (corresponds to the alignment of the rotation axes 53 , 54 ) an active circuit on the input side 55 on which the sling is 26th expires. On the second pair of conical disks 25th , which (here, for example, connected to a transmission output shaft in a torque-transmitting manner 23 ) about an output-side axis of rotation 54 is rotatable, is due to appropriate spacing in the axial direction 42 an output-side effective circle 56 on which the sling is 26th expires. The (changeable) relationship between the two spheres of activity 55 , 56 results in the transmission ratio between the transmission input shaft 22nd and the transmission output shaft 23 .

Between the two pairs of conical disks 24 , 25th is the first dream 27 and the second strand 28 shown in an ideal tangential orientation, so that the (shown and to the first strand 27 corresponding) parallel alignment of the (moving) direction of travel 43 adjusts. The (moved) transversal direction shown here 9 is perpendicular to the direction of travel 43 and perpendicular to the axial direction 42 defined as the third spatial axis, whereby this is defined as a (dependent on the effective circle) moved along (to the respective damper device 2 , 3 rigid) coordinate system is to be understood. Therefore, both the direction of travel shown applies 43 as well as the transverse direction 9 only for the first damper device shown 2 and the first dream 27 , only with the set input-side active circle shown 55 and corresponding output-side effective circle 56 . The (here optional) designed as a slide rail first damper device 2 and second damper means 3 lies with its outer sliding surface 57 and their associated antagonistically aligned inner sliding surface 58 (the sliding surfaces 58 , 57 and the sliding channel 59 are pars-pro-toto only on the first damper device 2 marked) on the first strand 27 or on the second strand 28 of the belt 26th in such a way that each has a damping sliding channel 59 for the first dream 27 and for the second strand 28 are formed. So that the sliding surfaces 58 , 57 the variable tangential alignment, i.e. the running direction 43 , when changing the effective circles 55 , 56 can follow is the first inventory 10 and the second bearing receptacle 11 on the first bearing seat 44 with the first pivot axis 7th and the second bearing seat 45 with the second pivot axis 8th stored. This is the damper devices 2 , 3 around the swivel axes 7th , 8th pivoted. In the exemplary embodiment shown, the pivoting movement is composed of a superposition of a pure angular movement and a transverse movement, so that, in contrast to a movement along a circular path, a movement along an oval (steeper) curved path is established.

• - die Umlaufrichtung 60 und die Laufrichtung 43 sind bei Drehmomenteingang über das erste Kegelscheibenpaar 24 umgekehrt; oder
• - die Getriebeausgangswelle 23 und die Getriebeeingangswelle 22 sind vertauscht, sodass das zweite Kegelscheibenpaar 25 den Drehmomenteingang bildet.

In the direction of rotation shown as an example 60 and with torque input via the gearbox input shaft 22nd forms the first damper device 2 In the illustration, the inlet side on the left and the outlet side on the right and the second damper device 3 forms the inlet side on the right and the outlet side on the left. The first dream 27 If it is designed as a traction drive, then forms the load strand 27 as a pulling strand and the second strand 28 the empty run 28 . In one version of the belt 26th as a push-link belt, all other things being equal, the first strand is either 27 as an empty run 28 by means of the first damper device 2 led or the first strand 27 is as a burden 27 and thrust side carried out and:

• - the direction of rotation 60 and the direction of travel 43 are at torque input via the first pair of conical pulleys 24 vice versa; or
• - the transmission output shaft 23 and the transmission input shaft 22nd are interchanged, so that the second pair of conical disks 25th forms the torque input.

In 11 is a powertrain 21 in a motor vehicle 41 with a belt drive 4th shown. The car 41 has a longitudinal axis 61 and a motor axis 62 on, with the motor axis 62 in front of the driver's cab 63 is arranged. The powertrain 21 includes a first prime mover 35 , which is preferably used as an internal combustion engine 35 is carried out and a first machine shaft 37 (then for example the combustion shaft 37 ) on the input side with the belt drive 4th is connected to transmit torque. A second prime mover 36 , which is preferably used as an electric drive machine 36 is carried out is also via a second machine shaft 38 (then for example the rotor shaft 38 ) with the belt drive 4th connected to transmit torque. By means of the prime movers 35 , 36 or via their machine shafts 37 , 38 becomes a torque for the drive train at the same time or at different times 21 submitted. However, a torque can also be absorbed, for example by means of the internal combustion engine 35 for engine braking and / or by means of the electric drive machine for recuperation of braking energy. The output side is the belt drive 4th connected to a purely schematically represented output, so that here a left propulsion wheel 39 and a right propulsion wheel 40 with a torque from the prime mover 35 , 36 can be supplied with changeable translation.

With the holding device proposed here, the component costs and the assembly costs can be reduced.

List of reference symbols

1

Holding device

2

first damper device

3

second damper device

4th

Belt drive

5

first storage bridge

6th

second storage bridge

7th

first pivot axis

8th

second pivot axis

9

Transverse direction

10

first inventory

11th

second inventory

12th

axial first fixing element

13th

axial second fixing element

14th

Gear housing

15th

first housing wall (cover)

16

second housing wall (pot)

17th

transverse left fixation element

18th

transverse right fixing element

19th

Feed line

20th

Feed opening

21

Powertrain

22nd

Transmission input shaft

23

Transmission output shaft

24

first pair of conical disks

25th

second pair of conical disks

26th

Sling

27

first dream

28

second dream

29

left first positioning element

30th

left second positioning element

31

right first positioning element

32

right second positioning element

33

Built-in element

34

Parking lock

35

Internal combustion engine

36

electric prime mover

37

Burner shaft

38

Rotor shaft

39

left propulsion wheel

40

right propulsion wheel

41

Motor vehicle

42

Axial direction

43

Running direction

44

first bearing seat

45

second bearing seat

46

left bearing jaw

47

right bearing jaw

48

first mounting screw

49

second mounting screw

50

Positioning fixture

51

first fixing screw

52

second fixing screw

53

input-side axis of rotation

54

output-side rotation axis

55

first effective circle

56

second effective circle

57

outer sliding surface

58

inner sliding surface

59

Sliding channel

60

Direction of rotation

61

Longitudinal axis

62

Motor axis

63

Driver's cab

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10017005 A1 [0002]
• EP 2372189 A1 [0002]

Claims (10)

Holding device (1) for a damper device (2,3) of a belt drive (4), having at least the following components: ) a damper device (2,3); and - a fixing element (12, 13) for fixing the holding device (1) in a gear housing (14), the gear housing (14) having a first housing wall (15) and an axially opposite second housing wall (16), characterized in that the bearing bracket (5,6) of the holding device (1) forms an axially fixed continuous connection between the first housing wall (15) and the second housing wall (16) in the said gear housing (14) and the holding device (1) is axially - is supported on both sides transversely to the pivot axis (7, 8) on the housing walls (15, 16). Holding device (1) for two damper devices (2, 3) of a belt drive (4), having at least the following components: a first bearing bracket (5) with a first pivot axis (7) for a first bearing receptacle (10) of a first damper device (2) ); - A second bearing bracket (6) with a second pivot axis (8) for a second bearing receptacle (11) of a second damper device (3); - An axial fixing element (12, 13) for axially fixing the holding device (1) in a gear housing (14), the gear housing (14) having a first housing wall (15) and an axially opposite second housing wall (16); - A transverse fixing element (17,18) for transversely fixing the holding device (1) in the said gear housing (14), the bearing brackets (5,6) are fixed to one another by means of the transverse fixing element (17,18), characterized in that the transverse fixing element (17,18) is formed separately from the gear housing (14). Holding device (1) Claim 2 , the transverse fixing element (17,18) being formed in one piece with the bearing brackets (5,6), the holding device (1) preferably being axially fixed via the transverse fixing element (17,18) by means of the axial fixing element (12,13) . Holding device (1) Claim 2 or 3 , the transverse fixing element (18) being formed by the bearing brackets (5, 6) as a component that can be mounted separately. Holding device (1) according to one of the preceding claims, wherein the holding device (1) comprises a supply line (19) and a supply opening (20) for a liquid operating medium, wherein the feed line (19) is preferably integrated into a bearing bracket (5), and / or wherein the holding device (1) preferably comprises two bearing brackets (5, 6) and a single feed line (19), and particularly preferably a single feed opening (20). Belt drive (4) for a drive train (21), having at least the following components: - A transmission input shaft (22) with a first pair of conical disks (24); - A transmission output shaft (23) with a second pair of conical disks (25); - A belt (26), by means of which the first pair of conical pulleys (24) is connected to the second pair of conical pulleys (25) in a torque-transmitting manner; - A gear housing (14) with a first housing wall (15) and an axially opposite second housing wall (16); and at least one, preferably two, damper devices (2, 3) which are mounted by means of a holding device (1) according to one of the preceding claims, wherein the at least one damper device (2, 3) rests in a damping manner on a strand (27, 28) of the looping means (26). Belt drive (4) after Claim 6 , wherein a first positioning element (29,30), preferably two first positioning elements (29,30), of the holding device (1) engages positively in the first housing wall (15), and preferably a second positioning element (31,32) of the holding device (1 ) engages positively in: - the second housing wall (16), and / or - an installation element (33), preferably a parking lock (34), in the second housing wall (16). Belt drive (4) after Claim 6 or 7th wherein the axial fixing element (12, 13), and preferably also the single transverse fixing element (17) in the case of a holding device (1) with two bearing brackets (5, 6), is only arranged and fixed to the first housing wall (15). Drive train (21), having at least one drive machine (35, 36) each with a machine shaft (37, 38), at least one consumer (39, 40) and a belt drive (4) Claim 8 , wherein the machine shaft (37, 38) can be connected to the at least one consumer (39, 40) for torque transmission by means of the belt drive (4) with a preferably continuously variable translation. Motor vehicle (41), having at least one drive wheel (39, 40), which by means of a drive train (21) after Claim 9 is drivable.

Images