DE102021120121A1 - Damper device for a belt mechanism of a belt transmission, and a holding device for a damper device of a belt mechanism of a belt transmission - Google Patents

Abstract

The invention relates to a damper device (1) for a belt (2) of a belt transmission (3), having a bearing mount (8) which can be pivoted about an axial direction (11) on a bearing bracket (9) of a transmission housing (10) of a belt transmission (3). is set up. The damper device (1) is primarily characterized in that the bearing mount (8) has an axially aligned, funnel-shaped mounting attachment (14). The invention further relates to a holding device (17) for a damper device (1) of a belt (2) of a belt transmission (3), having at least one carrier element (19) with a bearing bracket (9) with a bearing axis (20), with one on the Bearing bracket (9) accommodated bearing receptacle (8) of a damper device (1) is pivotable about the bearing axis (20), wherein the carrier element (19) has a mounting end (21) axially opposite to the bearing bracket (9). The holding device (17) is primarily characterized in that the assembly end (21) has a cone-shaped assembly attachment (22). The damping device or holding device proposed here enables particularly simple and reliable assembly.

Description

The invention relates to a damper device for a belt mechanism of a belt transmission, having a bearing mount which is pivotable about an axial direction on a bearing bridge of a transmission housing of a belt transmission. The damper device is primarily characterized in that the bearing mount has an axially aligned, funnel-shaped mounting attachment. The invention further relates to a holding device for a damper device of a belt transmission of a belt drive, having at least one carrier element with a bearing bridge with a bearing axis, wherein a bearing receptacle of a damper device received on the bearing bridge can be pivoted about the bearing axis, the carrier element being axially opposite relative to the bearing bridge has a mounting end. The holding device is primarily characterized in that the mounting end has a cone-shaped mounting attachment. The invention also relates to a transmission housing with such a holding device, a belt transmission with such a transmission housing for a drive train, a drive train with such a belt transmission, and a motor vehicle with such a drive train.

A belt transmission, also known as a belted pulley transmission or as a CVT (continuous variable transmission) for a motor vehicle comprises at least one pair of pulleys arranged on a first shaft and a second pair of pulleys arranged on a second shaft, as well as a belt means provided for torque transmission between the pairs of pulleys . A pair of conical disks comprises two conical disks which are aligned towards one another with corresponding conical surfaces and can be moved axially relative to one another. Such a belt transmission regularly comprises at least a first pair of conical pulleys and a second pair of conical pulleys, each with a first conical pulley that can be displaced along the shaft axis, also known as a loose pulley or movable pulley, and a second conical pulley that is stationary in the direction of the shaft axis, also known as a fixed pulley, with the torque transmission between the belting means provided for the pairs of conical disks as a result of a relative axial movement between the loose disk and the fixed disk as a result of the conical surfaces runs on a variable effective circle. As a result, a different speed transmission and torque transmission from one pair of conical pulleys to the other pair of conical pulleys can be continuously adjusted.

Such belt transmissions have long been, for example from the DE 100 17 005 A1 or the WO 2014/012 741 A1 , known. During operation of the belt transmission, the belt means is shifted in a radial direction by means of the relative axial movement of the conical disks, ie on the conical disk pairs, between an inner position (small effective circle) and an outer position (large effective circle). The belt forms two strands between the two pairs of conical pulleys, with (depending on the configuration and the direction of rotation of the pairs of conical pulleys) one of the strands forming a tight strand and the other strand a push strand, or a load strand and a slack strand.

In such continuously variable transmissions, at least one damper device is provided in the free space between the conical disk pairs. Such a damper device can be arranged on the tight strand and/or on the push strand of the belt and serves to guide and thus limit vibrations of the belt.

It has been shown that in motor vehicles with a hybrid drive train, the electric drive motor should be available for operation for a longer period of time. Therefore, there is a reduction in the installation space of the internal combustion engine or its associated components, while maintaining the known (subjective) performance level of the internal combustion engine. Therefore, a reduction in the space required for the belt drive is also required on the market.

One possibility is a reduction in the size of the conical disk pairs in the circumferential direction, with the desired consequence of a reduction in the size of the gear housing. However, a smaller gear case makes it more difficult to mount a damper device inside the gear case.

Proceeding from this, the object of the present invention is to at least partially overcome the disadvantages known from the prior art. The features according to the invention result 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 way, whereby the explanations from the following description and features from the figures can also be used for this purpose, which include additional configurations of the invention.

• - zumindest eine Gleitfläche, welche zum dämpfenden Anliegen an einem Trum eines Umschlingungsmittels eingerichtet ist; und
• - eine Lageraufnahme, welche auf einer Lagerbrücke eines Getriebegehäuses eines Umschlingungsgetriebes für ein Ausrichten der Gleitfläche abhängig von der Ausrichtung des zu dämpfenden Trums schwenkbar um eine Axialrichtung eingerichtet ist, sodass die Gleitfläche eine Laufrichtung für das zu dämpfende Trum lotrecht zu einer Transversalrichtung definiert.

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

• - At least one sliding surface, which is set up for damping abutment on a strand of a belt; and
• - a bearing mount, which is set up on a bearing bridge of a transmission housing of a belt-type transmission for aligning the sliding surface, depending on the orientation of the strand to be damped, pivotably about an axial direction, so that the sliding surface defines a running direction for the strand to be damped perpendicular to a transverse direction.

The damper device is primarily characterized in that the bearing mount has an axially aligned, funnel-shaped mounting attachment.

In the following, reference is made to the running direction mentioned (also referred to as the longitudinal direction) when the transverse direction and axial direction, which are perpendicular thereto and therefore span a Cartesian coordinate system, and corresponding terms are used without any explicit reference to the contrary. If the running direction, the axial direction and the transverse direction are spoken of here, then both the positive and the negative direction in the spanned coordinate system are meant. Furthermore, reference is made to the belt, which in the assembled state forms a belt around the set active circles of the two pairs of conical pulleys of a belt transmission, and in relation to the belt, the word inside is used, i.e. the belt is enclosed in the (imaginary) plane of the belt, and spoken from outside and appropriate terms used. The designations left and right refer to the sides of the running direction in a plane parallel to the pivot axis, are chosen arbitrarily (interchangeable) and are purely for the purpose of simplifying the explanations.

Unless explicitly stated otherwise, ordinal numbers used in the description above and below only serve to clearly distinguish them and do not reflect any order or ranking of the components referred to. An ordinal number greater than one does not mean that another such component must necessarily be present.

According to the prior art, the damper device is set up for damping a belt means, for example a link chain or a belt, of a belt transmission with two pairs of conical pulleys. The belt means is designed, for example, as a traction means or as a push belt. This means that the damper device is set up for one of the two strands of the belt means, for example in a configuration as a traction drive for the tight strand, which forms the load strand. Alternatively, the slack strand or both strands are each guided by means of such a damper device. When we talk about guiding the run, this also means damping the run, because the belt means that the pair of conical pulleys that are upstream in the direction of travel is accelerated transversely outwards in a direction that deviates from the ideal tangential direction of the set effective circles of the two pairs of conical pulleys during the transition to the strand. This results in shaft vibrations, which impair the efficiency and lead to noise emissions. For example, (depending on the tension) vibration frequencies of the strand to be guided occur up to around 800 Hz [eight hundred hertz] in the belt drive and are acoustically relevant.

In one embodiment, the damper device is used as a sliding shoe or a sliding guide (one-sided, usually inside contact with the run). Alternatively, the damper device is designed as a slide rail. For guiding or damping, such a slide rail has two mutually transversely antagonistically aligned sliding surfaces, of which the inner sliding surface is set up to rest on the strand to be guided during operation from the transverse inside and the outer sliding surface from the transverse outside. During operation, a sliding surface is in contact with the strand to be guided either permanently or depending on a vibration state. The sliding surface thus forms a contact surface extending in the running direction, which counteracts the transversally aligned amplitude of the shaft vibrations of the strand to be damped.

The damper device comprises a bearing mount, the bearing mount being set up to accommodate a bearing bracket. The bearing bridge is surrounded by a transmission housing of a belt transmission. In one embodiment, the bearing bridge is formed in one piece with the transmission housing. In a preferred embodiment, the bearing bracket is formed separately from the gear housing and is connected to the gear housing in a fixed or articulated manner. This bearing seat is pivotably mounted on an axially aligned pivot axis formed by a bearing bridge, for example in the manner explained above.

The bearing mount of the damper device is set up in interaction with the bearing bridge in such a way that it enables a (passive) alignment of the sliding surface of the damper device with the respective alignment of the strand to be guided. The damper device can thus be pivoted about the axial direction by means of the bearing mount in conjunction with the received bearing bracket (following the strand to be damped). The sliding surface defines the running direction for the strand to be damped, perpendicular to the transverse direction. The running direction, transverse direction and axial direction thus span a Cartesian coordinate system (which is also moved during operation). In some applications, the damper device can also be moved transversely, so that the damper device follows a (steeper oval) curve which deviates from a circular path around the pivot axis. The pivoting axis thus forms the center of a (two-dimensional) polar coordinate system, with the (pure) pivoting movement thus corresponding to the change in the polar angle and the transversal movement to the change in the polar radius. For the sake of clarity, this translational movement, which overlays, ie is superimposed on, the pivoting movement, is disregarded in the following and summarized under the term pivoting movement. The pivot axis is aligned transversely to the running direction of the belt, ie axially. This ensures that when the active circles of the belt drive are adjusted, the damper device can follow the resulting new (tangential) alignment of the belt drive. Although the aim is for the running direction to form the ideal, shortest connection between the adjacent working circles of the two conical pulley pairs, the alignment of the respective strand can deviate temporarily or permanently from this ideal, shortest connection in dynamic operation.

It is now proposed here that the bearing mount has an axially aligned, funnel-shaped mounting attachment. The funnel-shaped mounting projection is designed in such a way that it has an inclination to the axial direction. The inclination of the mounting attachment is designed in such a way that an (arbitrary) surface normal of the mounting attachment intersects the pivot axis. For example, the angle enclosed between the surface normal of the funnel-shaped mounting attachment and the pivot axis is 15° [fifteen degrees of 360°] to 75°, preferably 30° to 60°, for example 45°. By means of the funnel-shaped mounting attachment, axial placement of the damper device onto that component of a transmission housing which includes the bearing bridge is simplified in such a way that reliable blind mounting is made possible. Due to the inclination of the assembly approach, the bearing bridge slides into the predetermined position of the damper device within the belt transmission. The funnel-shaped assembly extension is arranged at least on the assembly side, to which the axial direction is aligned normally and which faces the bearing bracket during assembly, of the damper device, preferably in the case of a damper device designed mirror-symmetrically to a plane spanned by the running direction and transverse direction on both sides .

In order to prevent the damper device from tilting about the funnel-shaped mounting attachment during operation, a bearing surface is also proposed which is aligned parallel to the bearing bridge. The bearing surface is positioned outside of the funnel-shaped mounting boss and is formed integrally with at least one rail half. In a preferred embodiment, the bearing surface (axially inward) is formed immediately adjacent to the funnel-shaped mounting boss. The bearing surface is therefore the contact surface with the bearing bracket during operation.

In a preferred embodiment of the bearing receptacle, the funnel-shaped mounting projection is provided over the entire extent of that surface (for example the bearing surface) which faces (in any operating situation) the bearing bracket (preferably parallel).

It is further proposed in an advantageous embodiment of the damper device that the damper device has a first rail half and a second rail half,
wherein a connecting device is provided, by means of which the two rail halves are secured to one another axially and in the running direction,
the first half of the rail and the second half of the rail preferably having the same construction, particularly preferably being identical.

The damper device is designed in one piece or in several pieces, preferably in two pieces, with (preferably exclusively) a first half of the rail and a second half of the rail being provided. In a one-piece embodiment, the two rail halves are formed in one piece with each other. The at least one sliding surface is preferably composed of partial surfaces of the rail halves. In a multi-part embodiment, the two rail halves are preferably manufactured separately from one another. These two separate rail halves are secured to one another axially and in the running direction by means of a connecting device. In a frequent embodiment, bayonet hooks are provided for this purpose.

The rail halves of the damper device are preferably each formed completely in one piece, particularly preferably by means of injection molding for example from a polyamide [PA], preferably PA46.

In a preferred embodiment, two structurally identical rail halves are provided, as is already known in some conventional embodiments. During assembly, these can be routed axially to one another on the strand to be damped, or one half of the rail is already installed and the other can be routed axially. In one embodiment with a bayonet hook (because each rail half is structurally identical), one hook is immersed in a corresponding hook receptacle on the other rail half.

The two rail halves are preferably structurally identical overall, that is to say identical in design, so that they can always be produced using the same manufacturing process (for example in injection molding using a single injection molding tool). This reduces manufacturing costs and there is no risk of confusion during assembly.

It is further proposed in an advantageous embodiment of the damper device that an auxiliary surface is provided outside of the funnel-shaped mounting attachment, the auxiliary surface being aligned in a plane to which the axial direction is aligned normal.

The auxiliary surface proposed here is arranged outside of (preferably immediately adjacent to) the funnel-shaped mounting attachment. The axial direction is aligned normal to this, ie spanned by the running direction and transverse direction or parallel to such a spanned plane. By means of this auxiliary surface, on the one hand, the contact surface that helps during (blind) assembly is enlarged and, on the other hand, deflection (as a result of an inclination opposite to the inclination of the funnel-shaped assembly attachment) is prevented. The funnel-shaped mounting attachment is preferably completely surrounded by the auxiliary surface.

It is further proposed in an advantageous embodiment of the damper device that a closed opening for accommodating the bearing bracket is enclosed by the bearing mount, and preferably by the funnel-shaped mounting attachment.

In order to increase the rigidity of the bearing mount or the alignment of the damper device on the bearing bridge while requiring little installation space for the damper device in the running direction, a closed opening of the bearing mount is proposed here. The closed opening closes the bearing mount in the transverse direction and thus further stiffens the entire damper device. For example, a vibration of the bearing mount, which would spread to the entire damper device, can be reduced and/or ruled out.

In a preferred embodiment of the bearing mount, the funnel-shaped mounting attachment is provided over the entire extent of the opening, ie circumferentially. It should be pointed out that the length of the inclined surface and/or the angle of inclination of the funnel-shaped mounting attachment does not have to be constant all the way around, but is variable, for example.

The closed opening closes off the bearing mount in the transversal direction, so that incorrect assembly can also be ruled out when the damper device is assembled on the bearing bridge. For example, with a transversely inwardly open bearing mount, it would be possible for the damper device to be placed outside of the bearing bridge (even after it was initially correctly threaded in) in the case of blind assembly, and consequently not subsequently mounted on the bearing bridge. With a closed opening, on the other hand, the bearing mount is surrounded by the funnel-shaped assembly extension and/or by the auxiliary surface, and once the bearing mount has been successfully threaded onto the bearing bridge, this inevitably leads to correct assembly.

• - ein Wandungselement; und
• - zumindest ein Trägerelement mit einer Lagerbrücke mit einer Lagerachse, wobei eine auf die Lagerbrücke aufgenommene Lageraufnahme einer Dämpfervorrichtung um die Lagerachse verschwenkbar ist,

wobei das Trägerelement mit dem Wandungselement fest verbunden ist und bezogen auf die Lagerbrücke axial-gegenüberliegend ein Montageende aufweist.According to a further aspect, a holding device for a damper device of a belt mechanism of a belt transmission is proposed, having at least the following components:

• - a wall element; and
• - at least one carrier element with a bearing bridge with a bearing axis, wherein a bearing seat of a damper device accommodated on the bearing bridge can be pivoted about the bearing axis,

wherein the carrier element is firmly connected to the wall element and has a mounting end axially opposite relative to the bearing bridge.

The holding device is primarily characterized in that the mounting end has a cone-shaped mounting attachment.

A holding device is now proposed here, the holding device comprising a wall element. The holding device is set up so that a damper device for the strand of a belt means of a belt tion gear is pivotally mounted in such a way that the damper device can follow the movement of the strand to be damped. The bearing bracket is set up to correspond to the bearing mount of a damper device. The bearing bracket is designed in such a way that the bearing mount on the bearing bracket can be pivoted about the bearing axis. For this purpose, without excluding generality, reference is made to the previous description of the damper device and the bearing bridge and their function in a belt transmission. The bearing axis of the bearing bridge corresponds in a first approximation to the pivot axis for the damper device, with reference being made to the (optional) superimposed translational movement as explained at the outset.

In one embodiment, the wall element is part of the transmission housing, for example part of the so-called basic housing or alternatively a housing cover. Alternatively, the wall is part of an assembly aid for installing the belt in a belt transmission or a pre-assembled unit of a belt transmission (comprising at least the conical disk pairs, the belt and the at least one damper device) in the transmission housing.

The wall element is firmly connected to the carrier element, for example formed in one piece with the wall element, clicked, screwed or (at least positively) held between axially opposite walls of the transmission housing. The carrier element comprises the bearing bridge, the bearing bridge being fixed to the wall element or (during operation) to the gear housing or being movable itself, for example being pivotable. In this embodiment, the bearing bracket has a non-circular, preferably rectangular or square, cross-section, so that relative rotation between the damper device and the bearing bracket is prevented. However, a translational relative movement between the damper device and the bearing bridge is preferably free.

In one embodiment of a belt transmission, a single bearing bridge is included for a (single) damper device. In another embodiment, one bearing bridge is provided for each strand of the belt transmission, the (single) holding device comprising two bearing bridges or two holding devices, each with one bearing bridge, are provided.

The holding device has an axially opposite mounting end axially opposite to the wall element to which the carrier element is firmly connected. The mounting end of the holding device is designed in such a way that it has a cone as the mounting attachment. This cone-shaped mounting attachment is formed in such a way that a tapering cone, for example with the bearing axis as the center, is arranged on the free axial end (mounting end) of the carrier element. It should be pointed out that the cone does not necessarily have to be a cone with a round base, but in one embodiment is pyramid-shaped, having an inclined cone vertical axis, a freely formed base or even freely formed overall. The cone shape is therefore wider at its connection to the carrier element (corresponds to the base area in the case of a cone shape or pyramid shape) than at the open end (point) onto which the bearing mount is to be guided, with a continuous, particularly preferably a continuously decreasing, transition being preferred is formed from tip to terminal. The tip is preferably flat (with particularly preferably the axial direction normal to the plane) or rounded.

As a result, the cone-shaped assembly attachment is set up in such a way that when a damper device is assembled, the carrier element can be inserted very easily (preferably blindly) into the bearing mount. It should be pointed out that the damping device is a conventionally designed damping device or alternatively a damping device according to one of the above descriptions. It should also be pointed out that the cone-shaped mounting attachment of the holding device simplifies mounting or positioning of the damper device in a belt transmission.

In one embodiment, the cone-shaped mounting attachment is for connecting to a corresponding (axially opposite) wall of the transmission housing, for example to a housing cover. In one embodiment, the connection is formed (indirectly or directly with the assembly end) by means of an axial abutment, a click connection and/or a screw connection.

It is further proposed in an advantageous embodiment of the holding device that the carrier element has a first section and a second section separate therefrom,
wherein the first portion is fixedly connected to the wall member and includes the mounting end, and
wherein the separate second section is preferably firmly connected to the first section by means of the assembly end, and/or
the separate second section preferably being firmly connected to an axially opposite wall, particularly preferably to the housing cover.

For some assembly situations, for example with an axially fixed damper device, it is advantageous to use a multi-part holding device. It is therefore now proposed here that the carrier element of the holding device is designed in multiple parts, preferably in two parts. The carrier element then comprises a first (separate) section and a corresponding second (separate) section, the sections being firmly connected to one another during operation.

In order to ensure simplified assembly, it is proposed here that, in the case of this multi-part carrier element, the first section is firmly connected to the wall element and includes the assembly end, ie the conical assembly attachment. This also ensures simplified assembly of a belt transmission in the embodiment with a multi-part carrier element, or blind assembly of prefabricated components in a basic housing is made possible. In this embodiment, for example, a unit (comprising the at least one damper device) of the belt transmission is preassembled on a housing cover or an assembly aid and the first section of the at least one carrier element is mounted in the basic housing (in a corresponding number). This structural unit is then applied to the first section via the cone-shaped mounting attachment. In one embodiment with the housing cover for pre-assembling the structural unit, the second section of the carrier element is preferably mounted and the belt transmission is assembled, with the view of the components inside the transmission housing being hidden by the housing cover during assembly (possible blind assembly) and with the The position of the damper device relative to the bearing bracket can no longer be controlled (without releasing the assembly again).

In one embodiment, the bearing bracket is encompassed by the first section, so that the second section is only set up for connection to the carrier element (ie to the first section) and/or to the corresponding wall of the transmission housing. In one embodiment, the bearing bracket is distributed over the first and second section, with, for example, one rail half of the damper device being mounted on a corresponding section in each case.

In one embodiment, the first section is identical to the above embodiment of the carrier element, so that reference is made to the description there. The bearing bridge is then (entirely) covered by the first section.

In a preferred embodiment, the separate second section is firmly connected to the first section by means of the assembly end. In one embodiment, the sections are connected to one another in a purely form-fitting manner, for example via the conical shape of the mounting attachment and a corresponding (e.g. funnel-shaped) receptacle, and are preferably supported axially (and optionally also radially) solely via the respective wall of the transmission housing or are each individually connected to it ( firmly connected before or only after closing the gearbox housing). In another embodiment, the two sections can be fixed to one another, for example screwed by means of a so-called grub screw (grub screw). For example, the assembly end on the first section can be received by a receptacle on the second section, so that (blind) assembly of the second section via the conical assembly attachment is simplified.

In one embodiment, the two separate sections are also not connected to one another during operation or are in axial force-transmitting contact with one another only by means of an energy storage element (for example a helical compression spring).

In one embodiment, the second section is firmly connected (for example detachably) to an axially opposite wall, preferably to the housing cover. For example, the belt transmission together with the damper device is preassembled on the second section of the carrier element and then (for example blindly) performed on the assembly end of the first section.

In one embodiment, the second section also includes an assembly end, which facilitates (pre)assembly of the damper device on the second section.

It is also proposed in an advantageous embodiment of the holding device that the holding device also comprises a first axial stop and a second axial stop, which are arranged axially on both sides of the bearing bridge for limiting an axial movement of a damper device that is accommodated,
wherein, in a holding device according to an embodiment according to the above description, the first axial stop is comprised by the first section, and particularly preferably the second axial stop is comprised by the second section.

According to one embodiment, at least one of the sections has an axial stop, by means of which the axial travel of that damper device accommodated on the bearing bridge is limited in a predetermined manner. In one embodiment, two axial stops are provided axially on both sides of the respective section, by means of which a damper device is axially secured or fixed. Since the axial stops according to this embodiment are a (preferably one-piece or separate, axially fixed) part of the relevant section, the assembly effort is low and the axial position of the damper device accommodated is set very precisely (namely determined by the manufacture of the transmission housing half).

In a preferred embodiment, the first section comprises at least the first axial stop for limiting the axial movement of the accommodated damping device and is already positioned before the damping device is mounted on the first section via the conical mounting boss. In a particularly preferred embodiment, the second section also includes a second axial stop. This prevents an axial movement of the damper device in both axial directions. The respective axial stop is preferably in one piece or preassembled with the associated section of the carrier element. It should be pointed out that the two sections are not necessarily connected to one another, but rather project towards one another from the respective wall and are spaced apart from one another or merely touch one another.

• - ein Grundgehäuse;
• - einen Gehäusedeckel, wobei mittels des Grundgehäuses und des Gehäusedeckels ein Getrieberaum für ein Umschlingungsgetriebe umschlossen ist; und
• - eine Halteeinrichtung nach einer Ausführungsform gemäß der obigen

According to a further aspect, a transmission housing is proposed, having at least the following components:

• - a basic housing;
• - A housing cover, wherein by means of the base housing and the housing cover, a gear space for a belt transmission is enclosed; and
• - a holding device according to an embodiment according to the above

Description, wherein the wall element is comprised of the base housing or the housing cover.

The components of the belt transmission are usually surrounded and/or supported by a (for example separate) transmission housing. The transmission input shaft and the transmission output shaft extend into the transmission housing from the outside and are preferably supported on the transmission housing by means of bearings. The pairs of conical disks are housed in the gear housing, and the gear housing preferably forms the abutment for the axial actuation of the movable conical disks (loose disks). Furthermore, the transmission housing preferably forms connections for fastening the belt transmission 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.

In this case, the transmission housing comprises a basic housing (for example a so-called transmission pot) which has an axial extent. A part of the wall of the basic housing overlaps (pot-like) with a large part of the components of a belt transmission in the axial direction.

Furthermore, the transmission housing includes a housing cover. A gear compartment can be enclosed by means of the housing cover, which is designed to correspond to the basic housing. A closed transmission space is created by means of the housing cover and the basic housing, so that the belt transmission is protected from disruptive influences within the transmission space. The enclosing walls of the transmission housing are preferably formed solely by the basic housing and the housing cover.

A wall element is provided within the gear space, so that the retaining device can be connected to the gear housing by means of the wall element. In one embodiment, the wall element is formed in one piece with the base housing. In an alternative embodiment, the wall element is formed in one piece with the housing cover.

The wall element enables pre-assembly of the holding device within the gear space, so that pre-assembled components of the belt transmission can also be attached to the holding device. Therefore, a more precise assembly of the belt transmission in the transmission housing is possible. It should be noted that in one embodiment the remaining components of the belt transmission can be pre-assembled in the basic housing and the bearing bridge is firmly connected to the housing cover, in which case the bearing bridge can be attached via the mounting attachment (funnel-shaped for the damper device and cone-shaped for the holding device) together with the Housing cover is threaded into the corresponding bearing mount of the damper device (e.g. blind). Alternatively, in one embodiment, the remaining components of the belt transmission are on the end of the housing The cover can be pre-assembled and the bearing bracket is firmly connected to the base housing, in which case the bearing mount of the damper device (e.g. blind), the mounting attachment (funnel-shaped on the damper device and cone-shaped on the holding device) together with the housing cover on the corresponding bearing bracket, which is arranged in the base housing , is threaded. In an advantageous embodiment, the pre-assembly is carried out using a second portion of the carrier element according to an embodiment as described above.

It should be noted that in an advantageous embodiment both a funnel-shaped mounting lug is provided on the damper device and a cone-shaped mounting lug is provided on the mounting end of the holding device. Alternatively, only one of the mounting approaches is provided.

• - 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; und
• - eine Dämpfervorrichtung, welche auf einer Lagerbrücke einer Halteeinrichtung gelagert ist, wobei die Dämpfervorrichtung nach einer Ausführungsform gemäß der obigen Beschreibung und/oder die Halteeinrichtung nach einer Ausführungsform gemäß der obigen Beschreibung ausgeführt ist; und
• - ein Getriebegehäuse, bevorzugt nach einer Ausführungsform gemäß der obigen Beschreibung, in welchem die vorgenannten Komponenten aufgenommen und/oder gelagert sind,

wobei die Dämpfervorrichtung zum Dämpfen des Umschlingungsmittels mit ihrer zumindest einen Gleitfläche 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 pulleys;
• - A transmission output shaft with a second pair of conical pulleys;
• - A belt means, by means of which the first pair of conical pulleys is connected to the second pair of conical pulleys in a torque-transmitting manner; and
• - A damping device, which is mounted on a bearing bridge of a holding device, wherein the damping device is designed according to an embodiment according to the above description and / or the holding device according to an embodiment according to the above description; and
• - a transmission housing, preferably according to an embodiment according to the above description, in which the aforementioned components are accommodated and/or stored,

wherein the damper device for damping the belt means rests with its at least one sliding surface on a strand of the belt means.

With the belt transmission proposed here, a torque can be transmitted from a transmission input shaft to a transmission output shaft and vice versa, increasing or decreasing, with the transmission being steplessly adjustable at least in certain areas. A belt transmission is, for example, a so-called CVT with a traction device or with a push belt. The belt means is, for example, a multi-link chain. The belt is shifted in opposite directions on conical disk pairs from radially inside to radially outward and vice versa, so that a different effective circle is set on a respective conical disk pair. The ratio of the active circles results in a translation of the torque to be transmitted. The two active circuits are connected to one another by means of an upper and a lower strand, namely a load strand, also known as a tight strand or a push strand, and a slack strand of the belting device.

In the ideal state, the strands of the belt means form a tangential alignment between the two active circles. This tangential orientation is superimposed by induced shaft vibrations, caused for example by the finite division of the belt and as a result of leaving the active circle prematurely due to the escape acceleration of the belt.

The damper device is set up to rest with its at least one sliding surface on 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 damped. Furthermore, a transverse guide is also provided for one application, that is to say in a plane parallel to the looping circle formed by the looping means, a guide surface on one side or on both sides. A sliding channel is then formed in the case of a sliding rail with an outer sliding surface and an inner sliding surface. The strand is thus guided in a plane parallel 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 fit as closely as possible to the strand of the belt. Alternatively, the damper device is fixed axially and the guided run is movable (axially) relative thereto.

So that the damper device can follow the alignment of the run, a holding device forms a pivot bearing, on which the damper device rests with its bearing mount and can thus perform the pivoting movement as described above.

The components of the belt transmission are usually surrounded and/or supported by a transmission housing. For example, the holding device (also called a pivot bearing) for the bearing mount is fastened and/or movably mounted on the transmission housing as a holding tube. The transmission input shaft and the transmission output shaft extend into the transmission housing from the outside and are preferably attached by means of bearings supported by the gearbox housing. The pairs of conical disks are housed in the gear housing, and the gear housing preferably forms the abutment for the axial actuation of the movable conical disks (loose disks). Furthermore, the transmission housing preferably forms connections for fastening the belt transmission, 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 inner wall that limits the shape and movement of the components.

The belt transmission proposed here has one or two damper devices, of which at least one damper device and/or at least one holding device is designed according to the above description, and assembly is thus simplified by means of the at least one assembly attachment and, in particular, blind assembly is made possible. This is particularly advantageous when space is tight and when retrofitting, for example replacing the conventional transmission with the belt transmission proposed here. In addition, the damper device with a funnel-shaped mounting attachment or the holding device with a cone-shaped mounting attachment can be used as a simple replacement for a conventional damper device or conventional holding device without or without major design changes.

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 transmission according to an embodiment according to the above description,
wherein the machine shaft for torque transmission can be connected to the at least one consumer with, preferably steplessly, variable transmission by means of the belt transmission.

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 delivered via its machine shaft, for example the combustion engine shaft and/or the (electric) 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 transfer the torque in a targeted manner and/or by means of a manual transmission with different gear ratios, the use of the belt transmission 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 a drive wheel, for example, can also be absorbed by means of the belt transmission to an electric generator for recuperation, ie 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 can be operated in series or parallel or decoupled from one another and whose torque can be made available as required by means of a belt transmission according to the above description. An application example is a hybrid drive, comprising an electric drive machine and an internal combustion engine.

The drive train proposed here includes a belt transmission, which has one or two damper devices, of which at least one damper device and/or at least one holding device is designed according to the above description, and thus simplifies assembly by means of the at least one assembly attachment and in particular enables blind assembly is. This is particularly advantageous when space is tight and when retrofitting, for example replacing the conventional transmission with the belt transmission proposed here. In addition, the damper device with a funnel-shaped mounting attachment or the holding device with a cone-shaped mounting attachment can be used as a simple replacement for a conventional damper device or conventional holding device without or without major design changes.

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

Most motor vehicles today have a front-wheel drive and some 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 in such an arrangement and it is therefore particularly advantageous to use a small-sized belt transmission. The use of a belt transmission in motorized two-wheelers is similar those for which, compared to previously known two-wheelers, increased performance is always required with the same installation space. With the hybridization of the powertrains, this problem is getting worse.

This problem is exacerbated in the case of passenger cars in the small car class according to the European classification. The aggregates used in a passenger car in the small car class are not significantly smaller than in passenger cars in larger car classes. Nevertheless, the space available in small cars is much smaller. A comparable problem occurs in hybrid vehicles, in which a plurality of drive machines and clutches are provided in the drive train, so that the available installation space is reduced in comparison to a non-hybridized motor vehicle.

The motor vehicle proposed here includes a drive train with a continuously variable transmission, which has one or two damper devices, of which at least one damper device and/or at least one holding device is designed according to the above description, and thus simplifies assembly by means of the at least one assembly approach and in particular blind mounting is possible. This is particularly advantageous when space is tight and when retrofitting, for example replacing the conventional transmission with the belt transmission proposed here. In addition, the damper device with a funnel-shaped mounting attachment or the holding device with a cone-shaped mounting attachment can be used as a simple replacement for a conventional damper device or conventional holding device without or without major design changes.

Passenger cars are assigned to a vehicle class according to, for example, size, price, weight and performance, with this definition being subject to constant change according to market needs. In the US market, vehicles in the small and micro car classes are assigned to the subcompact car class according to European classification, and in the British market they correspond to the supermini or city car class. Examples of the subcompact 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 Dämpfervorrichtung auf einem Trägerelement;
• 2: eine Detailansicht einer Lageraufnahme auf einem Trägerelement;
• 3: ein Umschlingungsgetriebe in einem Getriebegehäuse;
• 4: ein Getriebegehäuse mit einer Halteeinrichtung mit geteilten Trägerelementen;
• 5: die Dämpfervorrichtung in einem Umschlingungsgetriebe in einer schematischen Ansicht; und
• 6: ein Antriebsstrang in einem Kraftfahrzeug mit einem 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 true to scale and are not suitable for defining size relationships. It is presented in

• 1 : a damper device on a support member;
• 2 : a detailed view of a bearing mount on a carrier element;
• 3 : a belt transmission in a transmission housing;
• 4 : a transmission housing with a holding device with split support elements;
• 5 : the damper device in a belt transmission in a schematic view; and
• 6 : a drive train in a motor vehicle with a belt transmission.

In 1 a damper device 1 on a carrier element 19 is shown in a perspective view. According to the illustration, the transverse direction 13 runs from top to bottom; the axial direction 11 here runs orthogonally thereto from left to approximately bottom right out of the image plane. Again orthogonal to this, the running direction 12 here runs out of the image plane to about the bottom left. The coordinate system is selected here in such a way that the bearing axis 20 runs parallel to the axial direction 11 . The damper device 1 includes a bearing mount 8 , the bearing mount 8 being set up to accommodate a bearing bridge 9 . The bearing bracket 9 is surrounded by the carrier element 19 and is arranged about a bearing axis 20 or pivot axis 42 . In this embodiment, the carrier element 19 is designed as a cylinder with a cylinder axis coaxial with the bearing axis 20 .

In this exemplary embodiment, the carrier element 19 comprises a mounting end 21 at the axial end (visible here), the carrier element 19 being designed as a conical mounting projection 22 at the mounting end 21 .

The bearing mount 8 of the damper device 1 is set up in interaction with the bearing bridge 9 in such a way that this (passive) alignment of an inner sliding surface 4 and an outer sliding surface 5 of the damper device 1 with the respective alignment of the strand 6, 7 to be guided (not here shown) allows. The dampers The device 1 can thus be pivoted about the axial direction 11 by means of the bearing mount 8 in conjunction with the bearing bridge 9 that is accommodated. The bearing mount 8 is designed in such a way that it includes a bearing surface 44 . The bearing surface 44 is in contact with the bearing bracket 9 of the carrier element 19. In a preferred embodiment, the damper device 1 includes a funnel-shaped mounting projection 14 running radially around the bearing mount 8 (here purely optionally completely), with this for positioning the damper device 1 on the carrier element 19 or is set up on the bearing bridge 9. The bearing mount 8 represents a closed opening 16 here (purely optional).

An auxiliary surface 15 is arranged outside of the funnel-shaped mounting attachment 14 (here purely optionally directly adjacent to the). The axial direction 11 is aligned normal to this, ie spanned by the running direction 12 and transverse direction 13 or parallel to such a spanned plane. By means of this auxiliary surface 15, on the one hand, the contact surface that helps during (blind) assembly is enlarged and, on the other hand, a deflection (as a result of an inclination opposite to the inclination of the funnel-shaped assembly projection 14) is prevented. Here the funnel-shaped mounting attachment 14 is completely enclosed by the auxiliary surface 15 purely as an option.

The damper device 1 shown here has (regardless of the properties mentioned above) a first rail half 45 and a second rail half 46, with a connecting device being provided by means of which the two rail halves 45, 46 are secured to one another axially and in the direction of travel 12, with here (Purely optional) the first rail half 45 and the second rail half 46 are formed identically.

The damper device 1 designed here (regardless of the aforementioned properties) as a sliding rail has an outer sliding surface 5 and an antagonistically aligned inner sliding surface 4, with which a damping sliding channel 47 is formed for the strand 6,7 (cf 3 ). The sliding surfaces 4.5 are connected by means of a first web 48 and a second web 49, which are spaced apart axially.

In 2 is a detail view after 1 a bearing seat 8 on a carrier element 19 is shown. The bearing axis 20 is oriented in such a way that it coincides with the pivot axis 42 and is aligned perpendicular to the plane of the image. For the sake of clarity, without excluding the general public, the bearing mount 8 is largely identical to that in 1 Damper device 1 shown is identical, so that reference is made to the description there. The carrier element 19 is accommodated within the bearing receptacle 8 or in its opening 16 , with the carrier element 19 encompassing the bearing bridge 9 which is in contact with the bearing surface 44 of the bearing receptacle 8 .

In the embodiment shown here, the bearing mount 8 includes the funnel-shaped mounting attachment 14, which extends over the entire extent of the opening 16, that is to say circumferentially. It should be pointed out that the length of the inclined surface and/or the angle of inclination of the funnel-shaped mounting projection 14 does not have to be constant all the way around, but is variable, for example.

The carrier element 19 has the conical mounting projection 22 at its (axial) mounting end 21 (away from the damper device 1). The cone-shaped mounting projection 22 is set up in such a way that, when the damper device 1 is (blindly) mounted, it facilitates the threading of the bearing receptacle 8 onto the bearing bracket 9 or counteracts incorrect mounting. In addition, a flat auxiliary surface 15 is arranged on the damper device 1 immediately after and surrounding the funnel-shaped assembly projection 14 (purely optionally completely), whereby incorrect assembly of the damper device 1 on the bearing bridge 9 can also be prevented by means of the auxiliary surface 15 .

In 3 a belt transmission 3 is shown in a transmission housing 10, the position of a pair of conical disks 33 being indicated. Two damper devices 1 are provided for one of the strands 6,7, each damper device 1 being supported by a bearing bridge 9, such as in FIG 1 and or 2 shown.

The transmission housing 10 includes a basic housing 28, which has an axial extent and is designed here as a so-called gear pot. The transmission housing 10 can be closed by a housing cover 25 . A closed transmission chamber 29 is created by means of the housing cover 25 and the basic housing 28 so that the belt transmission 3 is protected from disruptive influences within the transmission chamber 29 . In the embodiment shown, the axially aligned wall sections of the basic housing 28 overlap (like a pot) with the components of the belt transmission 3 to be arranged in the transmission chamber 29 in the axial direction.

The wall element 18 of the holding device 17 is formed in one piece from the lower wall of the basic housing 28 according to the illustration or associated with it. The respective carrier element 19 is firmly connected to the basic housing 28 . For example, a pre-assembled unit of the belt transmission 3 (here the conical pulley pairs 33, 34, the belt 2 and the damper devices 1 are shown) can be inserted into the transmission chamber 29 together with or before the housing cover 25 is installed and, in doing so, can be guided to the carrier elements 19 of the holding devices 17 under limited conditions Threading sight or blind. This is made easier by means of the cone-shaped mounting projections 22 on the respective mounting end 21 of the support elements 19 .

Irrespective of the properties mentioned above, the damper devices 1 are designed here as axially driven damper devices 1 and point on their webs 48, 49 on the inside (i.e. facing the respective strand 6, 7) next to the inner sliding surface 4 (and the purely optional outer sliding surface 5) axially on the left and right a first axial sliding surface 50 and a second axial sliding surface 51 for resting on the respective strand 6.7.

In 4 is a transmission housing 10 with a holding device 17 with divided carrier elements 19, ie each with a first section 23 and a separate second section 24 is shown. In this representation shown, the transmission housing 10 is shown in an exploded view on the left and the transmission housing 10 is shown on the right in an assembled state (for the sake of clarity without the other components of a belt transmission 3).

Without excluding the generality, the transmission housing 10 is largely identical to that shown in FIG 3 embodiment shown is identical, so that reference is made to the description there.

The wall element 18 of the holding device 17 is formed in one piece from the lower wall of the basic housing 28 according to the illustration or is connected thereto. The first section 23 of the respective carrier element 19 is firmly connected to the basic housing 28 . The second section 24 of the respective carrier element 19 is preassembled with the housing cover 25 or is assembled separately from it and transferred into the position as shown on the right.

In the embodiment shown, a first axial stop 26 is connected to the first section 23 and a second axial stop 27 is connected to the second section 24 (purely optional and independent of the aforementioned properties). This enables a particularly simple assembly for a damper device 1 to be secured axially during operation.

In 5 is the damper device 1 (for example according to 1 and 2 ) shown in a belt transmission 3 in a schematic view, wherein a strand 6 of a belt means 2 is guided by the damper device 1 and thus dampened. The belt transmission 3 is housed in a transmission housing 10, which limits the available installation space. The belt means 2 connects a first pair of conical disks 33 to a second pair of conical disks 34 in a torque-transmitting manner. On the first pair of conical disks 33, which is connected here, for example, to a transmission input shaft 31 so as to be rotatable about an input-side (first) axis of rotation 52 in a torque-transmitting manner, there is a corresponding spacing in the axial direction 11 (corresponds to the alignment of the axes of rotation 52,53) a first (small) effective circle 54, on which the belt means 2 runs. On the second pair of conical disks 34, which is connected here, for example, to a transmission output shaft 32 so as to be rotatable about an output-side (second) axis of rotation 53 in a torque-transmitting manner, a second (correspondingly large) active circle 55, on which the belt means 2 runs, rests due to a corresponding spacing in the axial direction 11. The (changeable) ratio of the two active circuits 54,55 results in the transmission ratio between the transmission input shaft 31 and the transmission output shaft 32.

The first strand 6 (guided here) and the second strand 7 are shown in an ideal tangential alignment between the two conical disk pairs 33, 34, so that the parallel alignment of the running direction 12 (shown and belonging to the first strand 6) is set. The transverse direction 13 shown here is defined as the third spatial axis perpendicular to the running direction 12 and perpendicular to the axial direction 11 , this being to be understood as a co-moving coordinate system (depending on the effective circle). Therefore, both the running direction 12 shown and the transverse direction 13 only apply to the damper device 1 shown (designed here as a slide rail) and the first strand 6, and only in the illustrated set active circuit 54 on the input side and corresponding active circuit 55 on the output side The damper device 1 rests with its outer sliding surface 5 and its antagonistically aligned inner sliding surface 4 on the first strand 6 of the belt means 2 in such a way that a damping sliding channel 47 for the first strand 6 is formed. So that the sliding surfaces 4, 5 can follow the changing tangential orientation, i.e. the running direction 12, when changing the effective circles 54, 55, the bearing mount 8 is on a holding device 17 with a pivot axis 42, for example a bearing bridge 9 according to one embodiment 1 until 4 , stored. Through this the damper device 1 is mounted so that it can pivot about the pivot axis 42 . In the exemplary embodiment shown, the pivoting movement is composed of a superimposition of a pure angular movement and a transversal movement, so that a movement along an oval (steeper) curved path occurs, deviating from a movement along a circular path.

• - die Umlaufrichtung 56 und die Laufrichtung 12 sind bei Drehmomenteingang über das erste Kegelscheibenpaar 33 umgekehrt; oder
• - die Getriebeausgangswelle 32 und die Getriebeeingangswelle 31 sind vertauscht, sodass das zweite Kegelscheibenpaar 34 den Drehmomenteingang bildet.

In the direction of rotation 56 shown as an example and with torque input via the transmission input shaft 31, the damper device 1 in the illustration forms the inlet on the left and the outlet on the right. In the case of an embodiment as a traction drive, the strand 6 to be guided then forms the load strand 6 as the tight strand and the other strand 7 the slack strand 7. If the belt means 2 is designed as a push belt, under otherwise identical conditions, either the strand 6 to be guided as the slack strand 7 is to be Damping device 1 out or the strand 6 to be guided is designed as a load strand 6 and push strand and:

• - The direction of rotation 56 and the running direction 12 are reversed when torque is input via the first pair of conical pulleys 33; or
• - The transmission output shaft 32 and the transmission input shaft 31 are reversed, so that the second pair of conical disks 34 forms the torque input.

In 6 a drive train 30 in a motor vehicle 41 with a belt transmission 3 is shown. Motor vehicle 41 has a longitudinal axis 57 and an engine axis 58 , engine axis 58 being arranged in front of driver's cab 59 . The drive train 30 comprises a first drive machine 35, which is preferably designed as an internal combustion engine 35 and is then connected to the belt transmission 3 in a torque-transmitting manner via an internal combustion engine shaft 37, for example. A second drive machine 36, which is preferably designed as an electric drive machine 36, is also connected in a torque-transmitting manner to the belt drive 3 via a rotor shaft 38, for example. A torque for the drive train 30 is delivered simultaneously or at different times by means of the drive machines 35, 36 or via their machine shafts 37, 38. However, a torque can also be received, for example by means of the internal combustion engine 35 for engine braking and/or by means of the electric drive machine 36 for the recuperation of braking energy. On the output side, the continuously variable transmission 3 is connected to an output shown purely schematically, so that here a left-hand drive wheel 39 and a right-hand drive wheel 40 can be supplied with torque from the drive machine 35, 36 with variable translation.

With the damping device or holding device proposed here, a particularly simple and secure assembly is made possible.

Reference List

1

damper device

2

means of restraint

3

belt transmission

4

inner sliding surface

5

outer sliding surface

6

first strand

7

second strand

8th

stock pick-up

9

bearing bridge

10

gear case

11

axial direction

12

running direction

13

transverse direction

14

funnel-shaped mounting approach

15

auxiliary surface

16

opening

17

holding device

18

wall element

19

carrier element

20

bearing axis

21

assembly end

22

cone-shaped mounting boss

23

first section

24

second part

25

housing cover

26

first axial stop

27

second axial stop

28

basic housing

29

gear room

30

powertrain

31

transmission input shaft

32

transmission output shaft

33

first pair of pulleys

34

second pair of pulleys

35

internal combustion engine

36

electric drive machine

37

combustion shaft

38

rotor shaft

39

left drive wheel

40

right drive wheel

41

motor vehicle

42

first pivot axis

43

second pivot axis

44

storage area

45

first half of the track

46

second rail half

47

sliding channel

48

first jetty

49

second jetty

50

first axial sliding surface

51

second axial sliding surface

52

first axis of rotation

53

second axis of rotation

54

first sphere of action

55

second sphere of action

56

direction of circulation

57

longitudinal axis

58

motor axis

59

driver's cabin

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited 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 [0003]
• WO 2014012741 A1 [0003]

Claims (10)

Damping device (1) for a belt (2) of a belt transmission (3), having at least the following components: - at least one sliding surface (4.5) which is set up for damping contact with a strand (6.7) of a belt (2). is; and - a bearing mount (8) which can be pivoted about an axial direction on a bearing bridge (9) of a gear housing (10) of a belt drive (3) for aligning the sliding surface (4,5) depending on the alignment of the strand (6) to be damped (11) is set up so that the sliding surface (4,5) defines a running direction (12) for the strand (6) to be damped perpendicular to a transverse direction (13), characterized in that the bearing mount (8) has an axially aligned funnel-shaped mounting attachment (14). Damping device (1) after claim 1 , wherein an auxiliary surface (15) is provided outside the funnel-shaped mounting boss (14), the auxiliary surface (15) being oriented in a plane to which the axial direction (11) is oriented normal. Damping device (1) after claim 1 or claim 2 , A closed opening (16) for accommodating the bearing bridge (9) being enclosed by the bearing receptacle (8), and preferably by the funnel-shaped mounting projection (14). Holding device (17) for a damper device (1) of a belt (2) of a belt transmission (3), having at least the following components: - a wall element (18); and - at least one support element (19) with a bearing bridge (9) with a bearing axis (20), wherein a bearing receptacle (8) of a damper device (1) received on the bearing bridge (9) can be pivoted about the bearing axis (20), the Support element (19) is firmly connected to the wall element (18) and has a mounting end (21) axially opposite relative to the bearing bracket (9), characterized in that the mounting end (21) has a conical mounting projection (22). Holding device (17) after claim 4 , wherein the carrier element (19) has a first section (23) and a second section (24) separate therefrom, the first section (23) being firmly connected to the wall element (18) and comprising the mounting end (21), and wherein the separate second section (24) is preferably firmly connected to the first section (23) by means of the assembly end (21), and/or the separate second section (24) is preferably connected to an axially opposite wall, particularly preferably to the housing cover ( 25), firmly connected. Holding device (17) after claim 4 or claim 5 , wherein the holding device (17) further comprises a first axial stop (26) and a second axial stop (27), which are arranged axially on both sides of the bearing bracket (9) for limiting an axial movement of a damper device (1) accommodated, with a holding device (17) after claim 5 the first axial stop (26) is comprised by the first section (23), and the second axial stop (27) is particularly preferably comprised by the second section (24). Transmission housing (10) comprising at least the following components: - a base housing (28); - A housing cover (25), wherein by means of the basic housing (28) and the housing cover (25) a gear space (29) for a belt transmission (3) is enclosed; and - a holding device (17) according to one of claim 4 until claim 6 , The wall element (18) being surrounded by the basic housing (28) or by the housing cover (25). Continuously variable transmission (3) for a drive train (30), having at least the following components: - a transmission input shaft (31) with a first pair of conical pulleys (33); - A transmission output shaft (32) with a second pair of conical pulleys (34); - An enlacing means (2) by means of which the first pair of conical disks (33) is connected to the second pair of conical disks (34) in a torque-transmitting manner; and - a damping device (1) which is mounted on a bearing bridge (9) of a holding device (17), the damping device (1) according to one of claim 1 until claim 3 and / or the holding device (17) according to one of claim 4 until claim 6 is executed; and - a transmission housing (10), preferably according to claim 7 , in which the aforementioned components are accommodated and/or stored, the damper device (1) for damping the belt (2) resting with its at least one sliding surface (4.5) on a strand (6) of the belt (2). Drive train (30), having at least one drive machine (35,36) each with a machine shaft (37,38), at least one consumer (39,40) and a belt transmission (3). claim 8 , wherein the machine shaft (37,38) for torque transmission by means of the belt transmission (3) with the at least a consumer (39, 40) with a preferably steplessly variable translation can be connected. Motor vehicle (41) having at least one driving wheel (39,40) which is driven by means of a drive train (30). claim 9 can be driven to propel the motor vehicle (41).

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