DE102015201882A1 - Sliding shoe tensioner for a belt drive - Google Patents

Abstract

The invention relates to a Gleitschuhspanner for a belt transmission, wherein the belt transmission comprises a first conical disk pair and a second conical disk pair, wherein the conical disk pairs are connected to each other by means of a belt torque transmitting, and wherein the Gleitschuhspanner has at least the following components: - at least one Gleitschuhaufnahme for supporting a sliding shoe ; - At least a first bearing element for supporting on a first cone pulley pair; - At least a second bearing element for supporting on a second cone pulley pair; and - a spring unit for generating a biasing force on the at least one shoe receiving, so that a recorded by the at least one Gleitschuhaufnahme shoe with minimal play on a belt means of a belt transmission can be applied, and wherein by means of the spring unit, the first bearing element and the second bearing element and the at least a shoe holder are connected together. With the Gleitschuhspanner proposed here, it is no longer necessary to set up a connection for receiving the sliding shoes with a Umschlingungsgehäuse.

Description

The invention relates to a sliding shoe tensioner for a belt transmission and a belt transmission, in particular for a drive train of a motor vehicle.

From the state of the art are known Umschlingungsgetriebe with which at least partially a continuous change of the translation (or reduction) is possible. For this purpose, two conical disk pairs are provided, each having two conical disks. The conical disks are each aligned with their conical surface facing each other and along their common axis of rotation relative to each other between a maximum spaced position and a minimally spaced position, displaceable, usually a conical disk is axially fixed and the other conical disk is axially displaceable. Between the conical disks of a conical disk pair thus a wedge disk is formed, which is variable. By means of a common belt, for example a transmission chain, the two pairs of conical disks are connected to each other to transmit torque. The belt means travels radially outwardly in a conical pulley pair as its pulleys are guided toward each other, and the belt means travels radially inwardly in a pair of conical pulleys as the pulley pairs move apart. This movement is carried out in a belt drive on the cone pulley pairs usually exactly opposite, so that the distance between the cone pulley pairs can be kept constant and no deflection mechanism must be provided for the belt means.

Relative to a first pair of conical disks, a transmission input shaft is rotationally fixed, and a transmission output shaft is rotationally fixed relative to a second pair of conical disks connected in a torque-transmitting manner by means of the belt. Depending on the selected distance of the conical disks relative to each other in relation to the selected distance of the other conical disk pair a translation is adjustable.

Such a belt transmission is for example from the DE 100 17 005 A1 known. In some applications, the belt transmission is combined with a conventional gearbox with fixed gear ratios, so that a larger transmission spread is achieved with a relatively smaller number of fixed gear ratios.

Because of the non-connection tangential leaving the belt from the wedge formed between the conical disks of a cone pulley pair, in particular due to a polygonal barrel, which results from a (usually) finite pitch of a chain, and other dynamic effects at the inlet and outlet in or out of the wedge and as a result Changes in the translation or as a result of rotational irregularities and other vibrations, the belt is made to vibrate around the belt means. The Umschlingungsmittelebene (or short: vibration level) is the shortest tangential connection of the set active circle of the conical disk pairs, ie the distance between the wedge disk formed between the conical disks, which corresponds to the width of the belt. Thus, the position of the vibration plane is variable with the change of the translation. The plane of oscillation usually coincides with the median plane in the direction of travel of the respective run, that is to say of the tension run (or load run) or of the slack side of the belt. In order to reduce these vibrations, sliding shoes are used in the prior art which rest with as little clearance as possible over a long extension of the belt and thus suppress vibrations and undulations of the belt. Such sliding shoes are also formed as sliding rail channels, as for example from the above DE 100 17 005 A1 are known.

Currently, such shoes are held with a guide which is connected to the housing of the belt transmission. For example, an axis extending parallel to the transmission shafts through the housing, on which the at least one shoe is tiltably mounted, so that the shoe can adapt to the variable vibration level (free).

On this basis, the present invention has the object of at least partially overcome the disadvantages known from the prior art. The features according to the invention emerge from the independent claims, to which advantageous embodiments are indicated in the dependent claims. The features of the claims may be combined in any technically meaningful manner, and to this end, the explanations of the following description and features of the figures may be used, which include additional embodiments of the invention.

• – zumindest eine Gleitschuhaufnahme zur Lagerung eines Gleitschuhs;
• – zumindest ein erstes Lagerelement zum Abstützen an einem ersten Kegelscheibenpaar;
• – zumindest ein zweites Lagerelement zum Abstützen an einem zweiten Kegelscheibenpaar; und
• – eine Federeinheit zum Erzeugen einer Vorspannkraft auf die zumindest eine Gleitschuhaufnahme, sodass ein von der zumindest einen Gleitschuhaufnahme aufgenommener Gleitschuh mit möglichst geringem Spiel an einem Umschlingungsmittel eines Umschlingungsgetriebes anlegbar ist, und wobei mittels der Federeinheit das erste Lagerelement und das zweite Lagerelement sowie die zumindest eine Gleitschuhaufnahme miteinander verbunden sind.

The invention relates to a Gleitschuhspanner for a belt transmission, wherein the belt transmission comprises a first cone pulley pair and a second cone pulley pair, wherein the cone pulley pairs by means of a Belting means are connected to each other transmitting torque, and wherein the Gleitschuhspanner comprises at least the following components:

• - At least one Gleitschuhaufnahme for mounting a shoe;
• - At least a first bearing element for supporting on a first cone pulley pair;
• - At least a second bearing element for supporting on a second cone pulley pair; and
• - A spring unit for generating a biasing force on the at least one shoe receiving, so that a recorded by the at least one Gleitschuhaufnahme shoe with minimal play on a belt means of a belt transmission can be applied, and wherein by means of the spring unit, the first bearing element and the second bearing element and the at least one Sliding shoe are connected to each other.

The Gleitschuhspanner proposed here requires no connection to the housing of the belt drive for storage. The Gleitschuhspanner has a first bearing element and a second bearing element, which are supported on the first conical disk pair and the second conical disk pair. Preferably, they rest on the cone pulley pair shaft of the respective cone pulley pair. The conical disk pair shaft is arranged between the two conical disks of a cone pulley pair. The two bearing elements are connected to each other by means of at least one spring unit.

The bearing elements are preferably designed as pitch elements, which can be placed concentrically on the respective conical disk pair waves. The bearing elements are positioned against each other by means of the spring unit and thus captive between the conical disk pairs can be arranged. The distance between the bearing elements corresponds to the distance between the conical disk pair shafts. Preferably, the distance of the bearing elements in the uninstalled state is slightly larger than in the installed state, and by the installation, a bias voltage is introduced into the spring unit. The restoring force of the spring unit thus ensures the position of the bearing elements on the conical disk pair shafts.

Most preferably, the bearing elements each have a bearing surface, which is adapted for the supply of a lubricant, for example oil, and preferably allows hydrodynamic bearings and / or dry sliding bearings and / or Wälzkörperlagerungen. Very particularly preferably, a bearing surface has at least one oil pocket, by means of which a static pressure can be built up by means of a lubricant. For this purpose, at least one, preferably pressurizable, lubricant line is preferably provided for each bearing surface.

The spring unit comprises at least one spring element for generating a prestressing force on the at least one sliding shoe receptacle, so that a favorable contact of the at least one sliding block on a belt means can be generated. The shoe holder is different in a preferred embodiment of a conventional shoe holder only in that it is suspended by the Gleitschuhspanners and is not suspended in the housing of the belt transmission. The at least one Gleitschuhaufnahme is thus for, for example, conventional, storage of a shoe set up so that the shoe tangentially at each translation setting of a belt drive can abut the Umschlingungsmittel and rest as large as possible over a long extension and evenly due to the biasing force on the belt can.

The spring unit and the at least one shoe holder and the two bearing elements can be arranged in the free space, which is enclosed by the belt and the cone pulley pairs.

In a further advantageous embodiment, the at least one shoe holder each has at least one click connection for connecting to a respective shoe.

In this preferred embodiment, the sliding shoe is connectable to the shoe holder by a click connection, wherein particularly preferably the entire shoe or at least the sliding surface is made of a plastic. Particularly preferably, the sliding block is produced by means of injection molding. This does not exclude that further elements are added, for example at least one stiffening element made of metal and / or a sliding surface made of a material with a particularly low coefficient of friction.

• – das erste Lagerelement mittels der ersten Festkörperfeder mit zumindest einer der Gleitschuhaufnahmen kraftübertragend verbunden ist; und/oder
• – das zweite Lagerelement mittels der zweiten Festkörperfeder mit zumindest einer der Gleitschuhaufnahmen kraftübertragend verbunden ist,

wobei eingebaut in einem Umschlingungsgetriebe die erste Festkörperfeder eine erste Federkraft und/oder die zweite Festkörperfeder eine zweite Federkraft ausüben, welche jeweils einen ersten Kraftanteil, welcher in Abstandsrichtung zwischen den Kegelscheibenpaaren ausgerichtet ist, und jeweils einen zweiten Kraftanteil, welcher in Vorspannrichtung zum Anlegen des zumindest einen Gleitschuhs an dem Umschlingungsmittel ausgerichtet ist, aufweisen.In a further advantageous embodiment, the spring unit comprises a first solid-state spring and / or a second solid-state spring, wherein

• - The first bearing element is connected by means of the first solid-state spring with at least one of the Gleitschuhaufnahmen force-transmitting; and or
• The second bearing element is force-transmittingly connected to at least one of the sliding shoe receptacles by means of the second solid-state spring,

wherein incorporated in a belt drive, the first solid-state spring, a first spring force and / or the second solid-state spring exert a second spring force which in each case has a first force component, which is aligned in the spacing direction between the conical disk pairs, and in each case a second force component, which is aligned in the pretensioning direction for applying the at least one sliding shoe to the belting means.

In this preferred embodiment, the spring unit comprises a first solid-state spring, which connects the first bearing element with at least one Gleitschuhaufnahme force-transmitting. Counter-bearing the spring unit comprises in one embodiment, a spacing element and connecting element between the second bearing element and the at least one Gleitschuhaufnahme. The spacer element counteracts the first solid-state spring. This spacing element in this case allows a relative movement between the first bearing element and the Gleitschuhaufnahme. This embodiment is also reversible with the second bearing element and a second solid-state spring executable.

Particularly preferably, both a first solid spring from the first bearing element and a second solid spring from the second bearing element connected to the at least one Gleitschuhaufnahme, so that the two solid springs have at least a first share of force, which is oriented antagonistically in the distance direction between the cone pulley pairs.

Irrespective of the possible configurations described above, the first force component is used to press the first bearing element and the second bearing element against the respective cone pulley pairs or conical disk pair shafts, so that the position of the shoe tensioner is fixed, without being connected to a housing of the belt transmission necessary is. Also, the Gleitschuhspanner can be mounted so easily after assembly of the conical disk pairs in the final position and without further adjustment tools and / or fasteners.

The (respective) solid-state spring additionally has a second force portion, which is aligned in the biasing direction and thus presses the at least one sliding shoe against the belt when the Gleitschuhspanner is installed in a belt transmission. The Gleitschuhspanner is in an installed state, when the Gleitschuhspanner is mounted between the conical disk pairs and the belt is already arranged for transmitting torque on the conical disk pairs. In this installed state of the Gleitschuhspanner the desired biasing force is applied to the at least one shoe for low-backlash and large-scale investment in the belt means. Thus, vibrations and vibrations are reduced in the belt.

Most preferably, the solid-state springs are corrugated, so that they are set up with a high rigidity at the same time for the secure positioning of the at least one sliding shoe.

The biasing direction is aligned transversely to the spacing direction between the conical disk pairs, and particularly preferably aligned orthogonal thereto.

In a further advantageous embodiment, the Gleitschuhspanner on two Gleitschuhaufnahmen and the first solid-state spring and / or the second solid-state spring extending V-shaped from the respective bearing element to the first Gleitschuhaufnahme and the second Gleitschuhaufnahme.

In this preferred embodiment, the first solid-state spring or the second solid-state spring is aligned in a V-shape and extends to the two opposite Gleitschuhaufnahmen. The tip or the bottom of the V formed here is connected to the respective bearing element. The spaced ends of the V-shape (open side of the V) are connected to the respective Gleitschuhaufnahmen and thus spaced from each other (movable). This results in a particularly preferred force distribution in the Gleitschuhspanner with a first force component and a second force component according to the above description. Unlike a pure V-shape, the solid-state springs, for example, may bend outward from the bottom of the V-shape or be superimposed by a waveform.

In a further advantageous embodiment, the spring unit has a spring, which is connected to at least one of the Gleitschuhaufnahmen and has an extension direction transverse to a distance direction between the first bearing element and the second bearing element.

In this preferred embodiment, a spring is additionally provided, which stiffens the spring unit in the biasing direction or allows a concentration on the first force component of the respective solid-state spring according to the embodiment described above. The spring is in this case arranged such that the sliding shoe receiving along the biasing direction is movable at least to the extent that a biasing force on the at least one shoe for engagement with the Belting is exercisable. The extension direction here is aligned transversely to the distance direction when the Gleitschuhspanner is installed in a belt transmission, said extension direction is preferably aligned orthogonal to the distance direction. In a preferred embodiment, the spring is designed as a (pressure) coil spring. Particularly preferably, the at least one Gleitschuhaufnahme is introduced by means of a bolt in one end of the compression spring and connected so as to transmit force with the compression spring. Preferably, the coil spring is designed sufficiently rigid against buckling, so no further guidance is needed.

The bearing elements are in this case by means of the spring unit so far movably connected to the at least one Gleitschuhaufnahme that the biasing force of the spring on the at least one Gleitschuhaufnahme is transferable. Most preferably, the bearing elements are connected by means of first and second solid-state springs according to the above description with the Gleitschuhaufnahmen. The solid-state springs preferably contribute to the pretensioning force in the direction of extension of the spring or merely permit movement of the spring in the direction of extent.

In a further advantageous embodiment, the spring unit has at least one lateral tangential surface which, installed in a belt transmission, extends tangentially to a conical disk surface, preferably to a movable conical disk, and preferably to a respective conical disk of both conical disk pairs.

In this particularly preferred embodiment, the spring unit has at least one lateral tangential surface, by means of which, when installed, the spring unit or the entire Gleitschuhspanner, at least partially, is axially guided, ie (approximately) parallel to the axes of rotation of the conical disk pairs. No additional elements are necessary for this. In addition, the friction with the belt transmission is low due to the large-scale system with low axial force.

Particularly preferably, the at least one lateral tangential surface is formed parallel to the conical disk surface and thus lies on the conical disk surface with as large a surface as possible with low friction when the sliding shoe vice is guided axially laterally by the conical disk. Most preferably, the tangential surface is provided with a material which has a particularly low friction with the conical disk surface. Most preferably, the tangential surfaces are each arranged only on one side of the at least one Gleitschuhaufnahmen towards the bearing elements and arranged opposite each other on the spring unit, so that they rest depending on the condition of the belt drive on the one conical disk pair or on the other conical disk pair, especially preferably in each case on the movable conical disk.

In a further advantageous embodiment, two identical sliding blocks are each received for low-friction contact with a belt of the respective Gleitschuhaufnahmen.

As a result of the use of two identical sliding shoes, the complexity of the assembly is reduced and at the same time the number of identical parts to be manufactured increased. This can significantly reduce costs.

In one embodiment, the Gleitschuhspanner is each equipped with only one Gleitschuhaufnahme, and it is preferred to use two Gleitschuhspanner in a belt transmission. The Gleitschuhspanner are then carried out separately in the installation in a belt transmission or interconnected. Here, a Gleitschuhspanner can be combined with a conventional suspension of a shoe in a belt transmission. This is particularly advantageous if different biasing forces for the installation of the sliding blocks on the two strands, load strand and empty strand, are required.

• – zumindest eine Getriebeeingangswelle mit einem ersten Kegelscheibenpaar;
• – zumindest eine Getriebeausgangswelle mit einem zweiten Kegelscheibenpaar;
• – zumindest ein Umschlingungsmittel, welches das erste Kegelscheibenpaar mit dem zweiten Kegelscheibenpaar drehmomentübertragend verbindet;
• – zumindest einen Gleitschuhspanner nach einer Ausführungsform gemäß der obigen Beschreibung mit zumindest einem Gleitschuh zum Dämpfen des zumindest einen Umschlingungsmittels.

According to a further aspect of the invention, a belt drive for a drive train is proposed which has at least the following components:

• - At least one transmission input shaft with a first cone pulley pair;
• - At least one transmission output shaft with a second cone pulley pair;
• - At least one Umschlingungsmittel, which connects the first conical disk pair with the second conical disk pair to transmit torque;
• - At least one Gleitschuhspanner according to one embodiment as described above with at least one shoe for damping the at least one belt.

With the belt transmission proposed here, a torque is translatable or reducible transferable, the transmission is at least partially infinitely adjustable. The translation is set via the two cone pulley pairs as described above. The belt means is arranged between the respective relatively movable cone pulley pairs and transmits Torque from one cone pulley pair to the other cone pulley pair. Preferably, the belt is held at a constant length. The at least one sliding shoe is always aligned adjacent parallel to the belt. The at least one sliding shoe is mounted by means of a Gleitschuhspanners according to the above description. Thus can be dispensed with a connection to a housing of the belt transmission. Thus, the size of the belt is reducible. Alternatively or additionally, the structure of the housing is simplified and thus cheaper to produce. In addition, the assembly is simplified and less error prone.

According to a further aspect of the invention, a drive train, which has a drive unit with an output shaft, at least one load and a belt transmission according to the above description, proposed, wherein the output shaft for torque transmission by means of the belt transmission with the at least one consumer with variable transmission is connectable.

The drive train is set up to transmit a torque provided by a drive unit, for example an energy conversion machine, and output via its output shaft, for example an internal combustion engine or an electric motor, as needed, ie taking into account the required rotational speed and the required torque. The use is, for example, at least one drive wheel of a motor vehicle and / or an electric generator for the provision of electrical energy. In order to selectively transmit the torque and / or by means of a gearbox with different ratios, the use of the belt-type transmission described above is particularly advantageous because a large transmission spread can be achieved in a small space. Conversely, a recording of a, for example, a drive wheel introduced inertial energy, which then forms a drive unit, by means of the belt drive on an electric generator for recuperation, ie the electrical storage of braking energy, with a suitably equipped torque transmission train feasible. Furthermore, in a preferred embodiment, a plurality of drive units are provided, which are connected in series or in parallel or decoupled from each other operable and whose torque can be made available by use of a belt transmission according to the above description as needed for use. Examples are hybrid drives of electric motor and internal combustion engine, but also multi-cylinder engines in which individual cylinders (groups) are switchable.

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

Most motor vehicles today have a front-wheel drive and sometimes arrange the drive unit, for example an internal combustion engine or an electric motor, in front of the driver's cab and along the main direction of travel. The radial space is particularly small in such an arrangement and it is therefore particularly advantageous to use belt drive small size. Similarly, the use of a belt transmission designed in motorized two-wheelers, for which a significantly increased performance is required with the same space.

This problem is exacerbated in passenger cars of the small car class according to European classification. The units used in a passenger car of the small car class are not significantly reduced compared to passenger cars larger car classes. Nevertheless, the available space for small cars is much smaller. The drive train described above has a belt transmission of particularly small size, wherein the belt is particularly narrow executable. With the sliding shoe tensioner proposed here, a space-saving design is possible by dispensing with a bearing of the at least one sliding shoe in the housing of the belt transmission.

Passenger cars are assigned to a vehicle class according to, for example, size, price, weight and power, and this definition is subject to constant change according to the needs of the market. In the US market, cars of the class small cars and microcars are classified according to European classification of the class of Subcompact Car and in the British market they correspond to the class Supermini or the class City Car. Examples of the micro car class are a Volkswagen up! or a Renault Twingo. Examples of the small car class are an Alfa Romeo Mito, Volkswagen Polo, Ford Fiesta or Renault Clio.

The above-described invention will be explained in detail in the background of the relevant technical background with reference to the accompanying drawings, which show preferred embodiments. The invention is not limited by the purely schematic drawings in any way, it being noted that the drawings are not dimensionally accurate and are not suitable for the definition of size ratios. It is shown in

1 : a belt drive with sliding shoe tensioner in lateral sectional view;

2 a first embodiment of a shoe tensioner;

3 : a belt drive in a plan view in cross section with Gleitschuhspanner in a first position;

4 : a belt drive in a plan view in cross-section with Gleitschuhspanner in a second position;

5 a side sectional view of another embodiment of a Gleitschuhspanners; and

6 : a powertrain in a motor vehicle.

In 1 is a belt drive 2 shown in a lateral section, so that of the first cone pulley pair 3 only the first movable cone pulley 30 can be seen and from the second cone pulley pair 4 only the second rigid cone pulley 55 you can see. The first cone pulley pair 3 is a first rotation center 32 rotatable and centrally has a first conical disk pair shaft 24 on. Likewise, the second cone pulley pair 4 a second center of rotation 33 and a second cone pulley shaft 25 on. A belt 5 , which is shown here only schematically, is on a respective effective diameter of the cone pulley pairs 3 and 4 passed through the formed wedge (stump) (cf. 3 and 4 ), so that the cone pulley pairs 3 and 4 torque transmitting interconnected. In the of the belt 5 enclosed space of the belt drive 2 Here is a sliding shoe tensioner 1 arranged, which does not laterally (ie out of the image plane and into) with a Umschlingungsgehäuse (not shown here) must be connected. This is achieved in particular by providing a first bearing element 10 and a second bearing element 11 are provided, which sliding on the first conical disk pair shaft 24 and the second cone pulley shaft 25 rested prestressed. The bias is in this case by the spring unit 12 generated, which here from a first V-shaped solid spring 14 and a second V-shaped solid spring 15 composed. Furthermore, in this embodiment, a spring 22 , designed here as a helical spring, provided by means of which a first shoe holder 6 and a second shoe holder 7 along the extension direction 23 , which here by the force arrows of the prestressing force 13 is indicated (additionally) are biased movable.

The first solid-state spring 14 and the second solid-state spring 15 are wavy, so a first spring force 16 or a second spring force 17 to generate, which in each case a first share of force 18 in the distance direction 20 , ie along the shortest connection between the first pair of conical disks 3 and the second cone pulley pair 4 , is aligned, and a second share of force 19 , which in the extension direction 23 or in Vorspannrichtung 21 is aligned, and thus on the first shoe holder 6 and the second shoe seat 7 in pretensioning direction 21 with a preload force 13 acts.

The first force components 18 are in balance and cause a backup of the bearing elements 10 and 11 so that the position of the shoe tensioner 1 is ensured. At the first shoe holder 6 is a first sliding shoe 8th provided, which on the belt means 5 is applied and the biasing force 13 such on the belt 5 transmits vibrations and corrugations by means of the closest possible contact of the sliding shoe 8th on the belt 5 be suppressed. Likewise here is a second shoe 9 on the second shoe holder 7 arranged, which also flat by means of the biasing force 13 on the belt 5 is applied.

In a further suitable embodiment, in the upper half according to the illustration, that is above the arrow, which is the distance direction 20 indicates and below the arrow of the distance direction 20 two separate shoe clamps 1 provided which separate first bearing elements 10 and second bearing elements 11 exhibit.

In a particularly preferred embodiment, the elements are bearing element 10 . 11 , Sliding shoe holder 6 . 7 and / or spring 22 each separate components, which only by the arrangement of the spring unit 12 in a belt drive 2 connected to each other and are functional in this arrangement.

In 2 is an assembled shoe clamp 1 shown which, for example, the in 1 shown Gleitschuhspanner corresponds. Here is also the first sliding surface 52 of the first shoe 8th to recognize while the second sliding surface 53 of the second shoe 9 is hidden here. Furthermore, the first storage area 48 of the first bearing element 10 and the second storage area 49 of the second bearing element 11 clearly visible. In this embodiment shown here are the spring unit 12 , the shoe shoes 6 and 7 as well as the bearing elements 10 and 11 integrally formed. In addition, the sliding shoes 8th and 9 with the shoe shoes 6 and 7 designed as separate components and tilted connected.

In 3 and 4 is in each case a belt drive 2 in plan view shown in section. In 3 is the minimum translation (or reduction) shown, so a reduction in the translation of the transmission input shaft 37 on the transmission output shaft 38 , In 4 conversely, the maximum translation is shown. The belt 5 is thus in each case at the outermost active circle or innermost active circle on the respective cone pulley pair 3 respectively 4 , The first cone pulley pair 3 here has a first conical disk pair shaft 24 on, which with the first center of rotation 32 concentric and rotationally fixed to the transmission input shaft 37 is connected and which in this illustration above and below each of the first movable conical disk 30 and the first rigid cone pulley 54 flanked. Similarly constructed is the second cone pulley pair 4 with a second movable cone pulley 31 and a second rigid cone pulley 55 , which are centered with a cone pulley shaft 25 concentric with the second center of rotation 33 with the transmission output shaft 38 rotationally firmly connected. The representations are here cut in the transverse plane, in the in 1 the distance direction 20 is drawn. The sliding shoe tensioner 1 here has the elements, as in the 1 and 2 shown on, with here the spring 22 is shown in cross-section and wherein in this view the first tangential surface 26 or the second tangential surface 27 opposite the first conical disk surface 28 or the second conical disk surface of the respective movable first conical disk 30 or the second cone pulley 31 are clearly visible. This will be the Gleitschuhspanner 1 axially, ie in the direction of the centers of rotation 32 and 33 guided, with the influence of friction on the cone pulley pairs 3 and 4 is significantly reduced by the tangential or parallel plane here. In addition, it can be seen in these figures that the width extension 34 of the shoe clamp 1 always less than the maximum width 35 of the respective cone pulley pair 3 (or 4 ) in the minimum position, so when the belt means 5 located at the outermost working diameter.

In 5 is another embodiment of a shoe tensioner 1 shown, in which most of the elements similar to those in the 1 and 2 are executed. In contrast, the first shoe is 8th and the second shoe 9 on the first shoe holder 6 or the second shoe holder 7 by means of a first click connection 50 or a second click connection 51 clicked on, so as a result of the form fixed to the respective Gleitschuhaufnahme 6 respectively 7 connectable. This embodiment is particularly in a sliding shoe 8th respectively 9 made of a plastic particularly advantageous. In particular, in this case can be dispensed with further fasteners, such as in the previous figures, the screw-nut connection. Furthermore, independent of the two variants described here are the first storage area 48 and the second storage area 49 with a first oil bag 56 or a second oil bag 57 carried out so that by means of a supplied lubricant through the lubricant line 47 a hydrostatic bearing is bildbild. Also can be dispensed with the formation of oil pockets and thus a hydrodynamic storage can be established. The lubricant line 47 is preferred in this case in the height of the Gleitschuhaufnahmen 6 and or 7 led to the outside, where now there is no more space required to the sliding shoes 8th and 9 store on the belt drive housing (not shown here).

In 6 is a powertrain 36 comprising a drive unit 39 , shown here as an internal combustion engine, an output shaft 40 , a belt drive 2 and a torque transmitting connected left drive wheel 41 and right drive wheel 42 , shown schematically. The powertrain 36 is here in a motor vehicle 43 arranged, wherein the drive unit 39 with its motor axis 46 transverse to the longitudinal axis 45 in front of the driver's cab 44 is arranged.

With the Gleitschuhspanner proposed here, it is no longer necessary to set up a connection for receiving the sliding shoes with a Umschlingungsgehäuse.

LIST OF REFERENCE NUMBERS

1

 Gleitschuhspanner

2

 wrap-around

3

 first conical disk pair

4

 second cone pulley pair

5

 endless

6

 first shoe holder

7

 second shoe holder

8th

 first sliding shoe

9

 second sliding shoe

10

 first bearing element

11

 second bearing element

12

 spring unit

13

 preload force

14

 first solid-state spring

15

 second solid-state spring

16

 first spring force

17

 second spring force

18

 first part of force

19

 second force component

20

 distance direction

21

 biasing direction

22

 feather

23

 extension direction

24

 first conical disk pair shaft

25

 second cone pulley shaft

26

 first tangential surface

27

 second tangential surface

28

 first conical disk surface

29

 second conical disk surface

30

 first movable cone pulley

31

 second movable cone pulley

32

 first rotation center

33

 second center of rotation

34

 width extension

35

 maximum width

36

 powertrain

37

 Transmission input shaft

38

 Transmission output shaft

39

 drive unit

40

 output shaft

41

 left drive wheel

42

 right drive wheel

43

 motor vehicle

44

 cab

45

 longitudinal axis

46

 motor axis

47

 lubricant line

48

 first storage area

49

 second storage area

50

 first click connection

51

 second click connection

52

 first sliding surface

53

 second sliding surface

54

 first rigid cone pulley

55

 second rigid cone pulley

56

 first oil bag

57

 second oil bag

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 10017005 A1 [0004, 0005]

Claims (10)

Sliding shoe tensioner ( 1 ) for a belt transmission ( 2 ), wherein the belt transmission ( 2 ) a first cone pulley pair ( 3 ) and a second cone pulley pair ( 4 ), wherein the cone pulley pairs ( 3 . 4 ) by means of a belt ( 5 ) are torque-transmitting interconnected, and wherein the Gleitschuhspanner ( 1 ) comprises at least the following components: - at least one sliding shoe receptacle ( 6 . 7 ) for supporting a sliding shoe ( 8th . 9 ); At least one first bearing element ( 10 ) for supporting on a first conical disk pair ( 3 ); At least one second bearing element ( 11 ) for supporting on a second cone pulley pair ( 4 ); and a spring unit ( 12 ) for generating a biasing force ( 13 ) on the at least one Gleitschuhaufnahme ( 6 . 7 ), so that one of the at least one Gleitschuhaufnahme ( 6 . 7 ) received sliding shoe ( 8th . 9 ) with the least possible play on a belt ( 5 ) of a belt drive ( 2 ) can be applied, and wherein by means of the spring unit ( 12 ) the first bearing element ( 10 ) and the second bearing element ( 11 ) and the at least one sliding shoe receptacle ( 6 . 7 ) are interconnected. Sliding shoe tensioner ( 1 ) according to claim 1, wherein the at least one sliding shoe receptacle ( 1 ) at least one click connection ( 51 . 52 ) for connecting each with a sliding shoe ( 8th . 9 ) on. Sliding shoe tensioner ( 1 ) according to claim 1 or 2, wherein the spring unit ( 12 ) a first solid-state spring ( 14 ) and / or a second solid-state spring ( 15 ), wherein - the first bearing element ( 10 ) by means of the first solid-state spring ( 14 ) with at least one of the Gleitschuhaufnahmen ( 6 . 7 ) is connected to transmit power; and / or the second bearing element ( 11 ) by means of the second solid-state spring ( 15 ) with at least one of the Gleitschuhaufnahmen ( 6 . 7 ) is connected in a force-transmitting manner, being installed in a belt transmission ( 2 ) the first solid-state spring ( 14 ) a first spring force ( 16 ) and / or the second solid-state spring ( 15 ) a second spring force ( 17 ), each of which has a first share of force ( 18 ), which in the distance direction ( 20 ) between the conical disk pairs ( 3 . 4 ), and in each case a second force component ( 19 ), which in Vorspannrichtung ( 21 ) for the belt ( 5 ). Sliding shoe tensioner ( 1 ) according to claim 3, wherein the sliding shoe tensioner ( 1 ) two sliding shoe receptacles ( 6 . 7 ) and wherein the first solid-state spring ( 14 ) and / or the second solid-state spring ( 15 ) are V-shaped from the respective bearing element ( 10 . 11 ) to the first shoe seat ( 6 . 7 ) and the second shoe seat ( 6 . 7 ). Sliding shoe tensioner ( 1 ) according to one of the preceding claims, wherein the bearing elements ( 10 . 11 ) at least one storage area ( 48 . 49 ), which can be supplied with a lubricant, wherein preferably at least one oil pocket ( 61 . 62 ) in the at least one storage area ( 48 . 49 ) is formed to build up a static pressure. Sliding shoe tensioner ( 1 ) according to one of the preceding claims, wherein the spring unit ( 12 ) a feather ( 22 ), which with at least one of the Gleitschuhaufnahmen ( 6 . 7 ) and an extension direction ( 23 ) transversely to a distance direction ( 20 ) between the first bearing element ( 10 ) and the second bearing element ( 11 ) having. Sliding shoe tensioner ( 1 ) according to one of the preceding claims, wherein the spring unit ( 12 ) at least one lateral tangential surface ( 26 . 27 ), which are installed in a belt transmission ( 2 ) tangentially to a conical disk surface ( 28 . 29 ), preferably to a movable conical disk ( 30 . 31 ), and preferably in each case a conical disk ( 30 . 31 ) of both conical disk pairs ( 3 . 4 ). Sliding shoe tensioner ( 1 ) according to one of the preceding claims, wherein two identical sliding blocks ( 8th . 9 ) each for low-friction investment on a belt means ( 5 ) of the respective Gleitschuhaufnahmen ( 6 . 7 ) are included. Belt transmission ( 2 ) for a drive train ( 36 ), comprising at least the following components: - at least one transmission input shaft ( 37 ) with a first cone pulley pair ( 3 ); At least one transmission output shaft ( 38 ) with a second cone pulley pair ( 4 ); At least one wrapping means ( 5 ), which the first cone pulley pair ( 3 ) with the second cone pulley pair ( 4 ) connects torque transmitting; - at least one sliding shoe tensioner ( 1 ) according to one of the preceding claims with at least one sliding shoe ( 8th . 9 ) for damping the at least one belt ( 5 ). Powertrain ( 36 ) comprising a drive unit ( 39 ) with an output shaft ( 40 ), at least one Consumer ( 41 . 42 ) and a belt transmission ( 2 ) according to claim 9, wherein the output shaft ( 40 ) for torque transmission by means of the belt drive ( 2 ) with the at least one consumer ( 41 . 42 ) is connectable with variable translation.

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