Abstract: A belt drive for a motor vehicle having at least two toothed pulleys (1) which are spaced apart from one another and having a toothed belt which wraps around them, wherein a positively locking connection is formed between a toothing system of the wraparound means and a toothing system (2) of the toothed pulleys (1), which positively locking connection is of low-friction configuration by an anti-friction agent which acts between the toothing systems is provided. In order for it to be possible to configure a toothed belt inexpensively and without an anti-friction agent, the anti-friction agent is formed in the form of a lubricant-varnish layer (5) which is applied at least to a toothing system (2) of a toothed pulley (1).

Abstract: A belt drive for a motor vehicle having at least two toothed pulleys (1) which are spaced apart from one another and having a toothed belt which wraps around them, wherein a positively locking connection is formed between a toothing system of the wraparound means and a toothing system (2) of the toothed pulleys (1), which positively locking connection is of low-friction configuration by an anti-friction agent which acts between the toothing systems is provided. In order for it to be possible to configure a toothed belt inexpensively and without an anti-friction agent, the anti-friction agent is formed in the form of a lubricant-varnish layer (5) which is applied at least to a toothing system (2) of a toothed pulley (1).

Abstract: The invention relates to a drive wheel (1) of an auxiliary unit belt drive of an internal combustion engine, having a running casing (2) which is operatively connected to a traction mechanism, having a hub (3) which is rotationally fixedly connected to the drive axle of an auxiliary unit, and having a damping device (4), which is arranged so as to act between the running casing (2) and the hub (3), for reducing rotary oscillations, with the damping device (4) comprising a spring store (5) which is arranged so as to act between the running casing (2) and the hub (3). In order that the running casing can be produced more economically, the invention provides that the running casing (2) is composed of a running part (6), a driver part (7) and a spring receptacle (8), with the running part (6) being rotationally fixedly and permanently connected to the driver part (7), and wherein the driver part (7) can be or is connected in a form-fitting manner to the spring receptacle (8).

Abstract: The invention relates to a clamping device comprising a pivoting arm on which a clamping roll is rotatably arranged. In order to damp pivoting movements of the pivoting arm, a damping device is provided in the region of a pivoting axis X. Furthermore, the pivoting arm is supported by a tension spring device which ensures a frictional arrangement of the clamping roll on a traction mechanism, in the assembled state.

Abstract: A tensioner (1, 1?) for a traction mechanism such as a belt, chain or the like, with a tensioning lever (4) which can be acted on by a helical spring (2), can pivot about a stationary shaft and on which a tensioning element is provided for abutment against the traction mechanism to be tensioned. The helical spring (2) is held at its ends by spring receptacles (6, 7) and a means (8, 9, 71) is provided for delimiting the spring excursion.

Abstract: A tensioning device for a traction mechanism, particularly a belt or a chain, including a tensioning lever over which the traction mechanism is guided and on which a tensioning spring is disposed with one end thereof, the other end thereof being provided on a spring holder by which the tensioning device can be fastened to an external object. A holding pin (11) extends through the tensioning spring (4), with the pin at one end (11) thereof being disposed in a fixed position on the tensioning lever (2) and at the other end thereof having a locking section (22) disposed on a locking element (17) provided on a spring holder (6). The locking element can be adjusted between a locking position of the holding pin end (16), in which the tensioning device (1) is fixed in a position with the pretensioned tensioning spring (4), and a released position of the holding pin end (16), in which the holding pin (10) is axially displaceable in the locking element (17), and limited by a stop.

Abstract: The invention relates to a rail (16a) of a flexible drive, which rail (16a) is intended to guide a drawing means (2). A lubricant which is introduced into the rail (16a) via the lubricant channel (13) brings about a pressure gap (15) which is formed between the inner side of the drawing means (2) and a guide face (9) of the rail (16a). Direct contact of the drawing means with the rail (16a) is suppressed on account of the lubricant which is introduced into the pressure gap (15), which has a friction-reducing effect.

Abstract: A belt drive is provided, especially a timing-belt drive for an internal-combustion engine, with a driving gear of a driveshaft, at least one driven gear of a driven shaft, and a belt means, wherein the driving or the driven gear imparts additional irregularity to the belt drive due to its noncircular shape and its phase position, which leads to stable running of the belt means. A noncircular gear that can be mounted easily and in phase, as well as with a fixed position, is realized in that the driving or driven noncircular gear has in its in-phase rotational position a rotationally fixed connection to its driving or driven shaft.

Abstract: A mechanical tensioning system (1) acting according to an eccentric principle for a traction mechanism of a traction mechanism drive of an internal combustion engine. The tensioning system (1) includes a cylindrical carrier element (8) allocated to a base plate (13) with a longitudinal borehole (12), wherein a fastening screw is guided by this borehole. An eccentric bushing (7) is supported on the carrier element (8) so that it can rotate by a sliding bearing (11). A leg-less, outwards opening, spreading torsion spring (14) arranged between a stationary component of the tensioning system (1) and the eccentric bushing (7) charges the eccentric bushing (7) into a position pretensioning the traction mechanism. A track roller (2) is arranged on the eccentric bushing (7) so that it can rotate by a roller bearing (4).

Abstract: The decoupler for a drive wheel arrangement for an auxiliary unit of an internal combustion engine has a belt pulley connected to a flexible drive element and a shaft. A damping device is arranged between the shaft and the belt pulley and includes a spring. The belt pulley is connected to a damper cage, which is connected via at least one spring to a damper cage which is positioned such that it can rotate on the shaft.

Abstract: The invention relates to a clamping device comprising a pivoting arm on which a clamping roll is rotatably arranged. In order to damp pivoting movements of the pivoting arm, a damping device is provided in the region of a pivoting axis X. Furthermore, the pivoting arm is supported by a tension spring device which ensures a frictional arrangement of the clamping roll on a traction mechanism, in the assembled state.

Abstract: A tensioning device for a traction mechanism drive, in particular for a belt drive. The tensioning device can be produced in an advantageous manner from production and design aspects and which offers advantages over known concepts with regard to the wear of the friction surface element in that it has a base part, having a pivot arm, having a torsion spring, which is designed as a coil spring, for imparting a pivoting torque which acts between the base part and the pivot arm and which forces the pivot arm in a tensioning direction, and having a damping device for generating a damping force which counteracts a pivoting movement of the pivot arm counter to the tensioning direction.

Abstract: A tensioning device for a traction mechanism, particularly a belt or a chain, including a tensioning lever over which the traction mechanism is guided and on which a tensioning spring is disposed with one end thereof, the other end thereof being provided on a spring holder by which the tensioning device can be fastened to an external object. A holding pin (11) extends through the tensioning spring (4), with the pin at one end (11) thereof being disposed in a fixed position on the tensioning lever (2) and at the other end thereof having a locking section (22) disposed on a locking element (17) provided on a spring holder (6). The locking element can be adjusted between a locking position of the holding pin end (16), in which the tensioning device (1) is fixed in a position with the pretensioned tensioning spring (4), and a released position of the holding pin end (16), in which the holding pin (10) is axially displaceable in the locking element (17), and limited by a stop.

Abstract: The invention relates to a rail (16a) of a flexible drive, which rail (16a) is intended to guide a drawing means (2). A lubricant which is introduced into the rail (16a) via the lubricant channel (13) brings about a pressure gap (15) which is formed between the inner side of the drawing means (2) and a guide face (9) of the rail (16a). Direct contact of the drawing means with the rail (16a) is suppressed on account of the lubricant which is introduced into the pressure gap (15), which has a friction-reducing effect.

Abstract: Traction mechanism drive for an internal combustion engine, having a crankshaft gear wheel, at least one gear wheel which is arranged on a driven shaft, a wrap-around means and an electric machine which can be actuated in order to reduce rotational non-uniformities, the electric machine (9, 10) having a rotor (12) which is arranged on the or a camshaft (1, 11) and interacts with an immobile stator (15).

Abstract: A tensioner (1, 1?) for a traction mechanism such as a belt, chain or the like, with a tensioning lever (4) which can be acted on by a helical spring (2), can pivot about a stationary shaft and on which a tensioning element is provided for abutment against the traction mechanism to be tensioned. The helical spring (2) is held at its ends by spring receptacles (6, 7) and a means (8, 9, 71) is provided for delimiting the spring excursion.

Abstract: The form of a tooth profile for a rotating disc (10) is provided. The tooth gaps (22) formed between teeth of the rotating disc (10) are each arranged symmetrically about a tooth gap symmetry axis (30). The tooth gap symmetry axes (30) are designed such as not to pass through a circular area (14) in the region of a rotational axis (12) of the rotating disc (10).

Abstract: A chain drive is provided including a plurality of shafts (2, 4, 5), which are connected to the drive, each having one sprocket (3, 6, 7), and a chain (8) which is guided over the sprockets (3, 6, 7). At least one sprocket (3) is non-circular in order to reduce the chain forces which result from the disturbance vibrations introduced into the drive (1). The chain (8) is formed of links (9, 10, 11) which are connected to one another by pin-like connecting elements (15) and which have connection apertures (12, 13, 14), and the connection apertures (12, 13, 14) of all the links (9, 10, 11) are normally punched.

Abstract: The invention relates to a drive wheel (1) of an auxiliary unit belt drive of an internal combustion engine, having a running casing (2) which is operatively connected to a traction mechanism, having a hub (3) which is rotationally fixedly connected to the drive axle of an auxiliary unit, and having a damping device (4), which is arranged so as to act between the running casing (2) and the hub (3), for reducing rotary oscillations, with the damping device (4) comprising a spring store (5) which is arranged so as to act between the running casing (2) and the hub (3). In order that the running casing can be produced more economically, the invention provides that the running casing (2) is composed of a running part (6), a driver part (7) and a spring receptacle (8), with the running part (6) being rotationally fixedly and permanently connected to the driver part (7), and wherein the driver part (7) can be or is connected in a form-fitting manner to the spring receptacle (8).

Abstract: A belt drive (1) including a belt drive element (4) such as a belt or a chain and a plurality of wheels (1, 6, 7, 8) seated on shafts and integrated into the drive, around which the belt drive element is wound. Parasitic oscillations are introduced into the belt drive (1) by at least one shaft. For the purpose of generating a counter-oscillation, at least one wheel (3) has a non-circular shape. The non-circular wheel (3) is configured, in terms of its shape, in such a manner that it is adapted to generate a counter-oscillation which compensates at least two different main oscillation orders of the parasitic oscillation.