Continuously variable transmission

Abstract

The invention relates to a continuously variable transmission comprising a transmission housing, a drive shaft, an output shaft and at least two disc-shaped rotors. The continuously variable transmission also comprises at least one transmission section with at least one movement element and at least one transmission gear, and at least one transmission section with at least one transmission shaft and at least one transmission element. The at least one transmission gear is arranged axially displaceably along a first secondary axis on the at least one movement element. A drive-side disc-shaped rotor drives the at least one transmission gear. The at least one transmission gear engages into the at least one transmission shaft. The at least one transmission element is arranged on the at least one transmission shaft. The at least one transmission element drives the output-side disc-shaped rotor.

Description

[0001] Continuously variable transmission

[0002] Technical area

[0003] The invention relates to a continuously variable transmission for muscle-powered vehicles, such as bicycles.

[0004] State of the art

[0005] Continuously variable transmissions are rotary transmissions in which the gear ratio is continuously adjustable. Continuously variable transmissions for bicycles offer seamless and continuous gear change without the rider having to shift between individual gears. Unlike conventional transmissions (e.g. step transmissions) with fixed gears, continuously variable transmissions allow the gear ratio to be precisely adjusted to individual needs and riding conditions. In step transmissions, each gear step has a specific gear ratio, which means that the transition between gears is gradual. Continuously variable transmissions allow the gear ratio to vary continuously and without fixed gear steps. Unlike step transmissions, a continuously variable transmission does not have gears or steps; instead, the gear ratio is changed gradually.Although continuously variable transmissions for bicycles have made significant progress, several challenges remain. One of the main problems lies in the complexity of the mechanics and the fine tuning of gear ratios. The precise and reliable operation of continuously variable transmission systems requires high-quality components and careful tuning.

[0006] In addition, many of these transmission systems are relatively heavy and bulky, which increases the weight of the bike and can affect handling. Another issue is the limited selection of continuously variable transmissions on the market. Although availability has improved, the selection is still limited, and it can be difficult to find the right continuously variable transmission system for your individual needs.

[0007] Description of the invention

[0008] The invention is based on the object of providing an easy-to-handle, compact, reliable and low-wear continuously variable transmission.

[0009] This object is achieved by a device according to claim 1. Advantageous embodiments of the invention are specified in the subclaims.

[0010] The continuously variable transmission has a transmission housing, an input shaft, an output shaft, and at least two disc-shaped rotors, hereinafter referred to as rotors. The transmission housing can be cylindrical and can form the static base for the transmission. The input shaft, the output shaft, and the at least two rotors are arranged concentrically to a main axis. The input shaft is connected to a disc-shaped rotor on the drive side, hereinafter referred to as the input-side rotor, and the output shaft is connected to a disc-shaped rotor on the output side, hereinafter referred to as the output-side rotor. The input shaft can be connected centrally and rotationally fixed to the input-side rotor. A rotary motion can be transmitted to the input-side rotor via the input shaft. The input shaft can be connected to the input-side rotor via a material connection, a form connection, or a friction connection.In one embodiment, the drive shaft and the drive-side rotor can be formed as a single piece. The output-side rotor can transmit rotary motion to the output shaft. The output shaft can be connected centrally and non-rotatably to the output-side rotor. The output shaft can be connected to the output-side rotor via a material connection or a frictional connection. In one embodiment, the output shaft and the output-side rotor can be formed as a single piece. The drive shaft and / or the output shaft can each extend through an opening in the gearbox housing. The drive shaft can extend through a first opening, and the output shaft can extend through a second opening. The first opening and the second opening can be arranged concentrically to the main axis. The drive shaft can be supported by the first opening, and the output shaft can be supported by the second opening.

[0011] The continuously variable transmission comprises at least one transmission section. The transmission section comprises at least one moving element and at least one transmission gear.

[0012] The at least one movement element is arranged concentrically with a first secondary axis. The secondary axis is arranged orthogonally to the main axis. The at least one movement element can be a spindle, in particular a threaded spindle. A spindle is a threaded shaft for generating a translational movement from a rotational movement. The at least one transmission gear is arranged on the at least one movement element so as to be axially displaceable relative to the first secondary axis. The at least one transmission gear can be mounted on the at least one movement element.

[0013] In one embodiment, the transmission section can comprise at least two movement elements. The at least two movement elements can be arranged separately from one another along the first secondary axis. The at least two movement elements can be mounted on a cross member. The cross member can be arranged between the at least two movement elements. The transmission section can comprise at least two transmission gears. On each of the at least two movement elements, a transmission gear can be arranged and / or mounted so as to be axially displaceable along the first secondary axis. The at least one transmission gear can be, for example, a spur gear or a cylindrical gear. The at least one transmission gear can be a spur gear with straight teeth. In one embodiment, the at least one transmission gear can be a spur gear with helical teeth. The at least one transmission gear can also be a spur gear with double helical teeth.The at least one transmission gear may comprise at least one carriage. The at least one transmission gear may be arranged on at least one carriage. The at least one carriage may be arranged between the at least one transmission gear and the at least one movement element.

[0014] The at least one movement element can have at least one coupling element or be connected to at least one coupling element, in particular connected in a rotationally fixed manner. The at least one coupling element can be a bevel gear. The at least one movement element can be connected to at least one control shaft. The at least one control shaft can have a bevel gear on the coupling element side. The at least one coupling element can form a clutch with the at least one control shaft. The clutch can be a bevel gear pair. The at least one control shaft can drive the at least one movement element. The at least one control shaft can set the at least one movement element in rotation about the first secondary axis. The at least one control shaft can adjust the position of the at least one transmission gear on the at least one movement element.In one embodiment, the continuously variable transmission can have at least two movement elements. Each movement element can be connected to a clutch element, in particular, a rotationally fixed connection. Each clutch element can form a clutch with a respective control shaft. The at least two movement elements can be driven separately from one another by a respective control shaft. By means of a rotational movement transmitted to the respective clutch element via the respective control shaft, the position of the respective transmission gear along the first secondary axis on the respective movement element can be changed and / or adjusted.

[0015] By rotating the at least one movement element, the at least one transmission gear can be displaced along the first secondary axis. In one embodiment, the continuously variable transmission can have at least two movement elements and at least two transmission gears. A first transmission gear can be arranged axially displaceably on a first movement element, and a second transmission gear can be arranged axially displaceably on a second movement element. The first movement element and the second movement element can be connected to a cross member. The first movement element and the second movement element can be mounted on the cross member. The cross member can extend along the main axis. The cross member can be mounted on the drive side in the drive-side rotor and on the output side in the output-side rotor.

[0016] The rotation of the first movement element allows the first transmission gear to be axially displaced along the first secondary axis. The rotation of the second movement element allows the second transmission gear to be axially displaced along the first secondary axis. The rotation of at least two movement elements allows the at least two transmission gears to be displaced synchronously along the first secondary axis. The rotation of at least two movement elements allows the at least two transmission gears to be displaced synchronously along the first secondary axis in opposite directions.

[0017] The at least one transmission gear can be driven by the drive-side rotor. The at least one transmission gear can be driven directly or indirectly by the drive-side rotor. The at least one transmission gear can be driven directly, i.e., directly and without intermediary elements, by the drive-side rotor. The at least one transmission gear can be driven indirectly, i.e., via intermediary elements, by the drive-side rotor.

[0018] At least one rotor can have at least two profile rings. The at least one rotor can be the drive-side rotor and / or a further rotor. In one embodiment, the drive-side rotor can have at least two profile rings. The at least two profile rings can be mounted on the at least one rotor. The at least one rotor can serve as a bearing for the at least two profile rings. The at least two profile rings can have teeth. The at least two profile rings can have serrations, tines or wedges. The at least two profile rings can have flat-side toothing. Flat-side toothing is understood to mean teeth pointing in the direction of the output-side rotor. The profile rings can be toothed rings. The teeth can be arranged on the output-side of the profile rings.The teeth can be arranged on the output side of the profile rings along the circumference of the at least two profile rings. The at least two profile rings can have straight or helical teeth. The at least two profile rings can have spur or helical teeth. At least one profile ring can mesh with the at least one transmission gear. The at least one profile ring and the at least one transmission gear can have spur or helical teeth. The rotational movement of the at least one rotor can be transmitted to the at least one transmission gear via the profile rings. The rotational movement of the drive-side rotor can be transmitted to the at least one transmission gear via the profile rings. The at least two profile rings can each be displaceable by one tooth length.This improves the smooth gear change and reliability of the transmission. Furthermore, transitions between different gear ratios can be achieved without noticeable jumps or jerks. This provides a smoother and more consistent driving experience, increases reliability, and minimizes wear on the individual transmission components.

[0019] The at least two profile rings can be mounted on the drive-side rotor so as to be displaceable in the circumferential direction. The at least two profile rings can be arranged and / or mounted on the at least one rotor so that they can each be displaced by one tooth length. The drive-side rotor can have at least one recess. The respective profile rings can have at least one extension on the drive-side of the respective profile ring. The at least one extension can be received in the at least one recess. The at least one extension can be mounted in the at least one recess. The at least one recess can form a sliding bearing for the associated profile ring. Each profile ring can be mounted by at least one recess. The number of recesses can correspond to the number of extensions. The drive-side rotor can have a plurality of recesses.The drive-side rotor can have 1-10 recesses. The at least one extension can have a shorter length in the circumferential direction than the recess. This allows the extension to move circumferentially within the recess. The recess can have a limit on both sides in the circumferential direction. The limit can define a maximum movement in the circumferential direction. In one embodiment, the maximum possible movement is one tooth length of the profile ring. This prevents jamming with the at least one transmission gear, ensures reliable function of the transmission, and minimizes wear on the transmission components. In addition, the transition between the transmission ratios is improved and simplified, thereby ensuring a more reliable and smoother transition between the transmission ratios.The at least two profile rings can be arranged radially from a center point of the at least one rotor, concentric with the main axis. The center point of the at least one rotor can correspond to the point where the main axis passes through the at least one rotor. Starting from the center point of the rotor, the radius of the profile rings can increase in the radial direction. The at least one rotor can have two to N rings, where N can be any natural number less than 100, preferably less than 50, particularly preferably less than 30.

[0020] By changing the axial position of the at least one transmission gear along the first secondary axis on the at least one moving element, the radial position of the at least one transmission gear can be changed starting from the center point of the at least one rotor. In this way, the ratio of the circumferences of the profile rings to the at least one transmission gear can be changed. The size ratio of the at least one transmission gear to the diameters of the profile rings can decrease radially along the at least one rotor, thereby changing the transmission ratios. In addition, the speed of the at least one transmission gear can change depending on the position of the at least one transmission gear. The mechanical control for changing the transmission ratios can be manual, electrical, pneumatic, or hydraulic. The control can be regulated via the at least one control shaft.For example, the transmission can have a 10-fold control range. The control range of a continuously variable transmission specifies the relationship between the largest and smallest gear ratio. The control range corresponds to the gear ratio spread in a stepped transmission. The control range refers to the entire spectrum of gear ratios that a continuously variable transmission can cover, while the gear ratio spread describes the size of the steps between successive gears in stepped transmissions. The innermost position of the at least one transmission gear can represent the smallest gear ratio. In the innermost position, the at least one transmission gear can have the highest speed. With two transmission gears, the first transmission gear and the second transmission gear can have the smallest distance in the innermost position along the first secondary axis. The outermost position of the at least one transmission gear can represent the largest gear ratio.With two transmission gears, the first transmission gear and the second transmission gear can have the greatest distance in the outermost position along the first secondary axis. In the outermost position, the at least one transmission element can have the lowest speed. The transmission ratio can increase in the radial direction of the at least one rotor, and the speed of the at least one transmission gear can decrease.

[0021] This allows for a smooth and reliable gear change. Furthermore, the transition between different gear ratios can be achieved without noticeable jumps or jerks, providing a smoother and more consistent driving experience and minimizing wear on the individual components of the transmission.

[0022] The continuously variable transmission has at least one transmission section with at least one transmission shaft and at least one transmission element. The at least one transmission shaft is arranged concentrically to a second secondary axis. The second secondary axis is arranged orthogonally to the main axis. The first secondary axis can be arranged parallel to the second secondary axis. The at least one transmission shaft can be a worm shaft or a shaft with spur gear teeth. The at least one transmission gear engages with the at least one transmission shaft. The at least one transmission gear can transmit forces to the at least one transmission shaft. The at least one transmission gear can engage with both the at least one transmission shaft and at least one profile ring. The functional surfaces of the at least one transmission gear and the at least one transmission shaft can be rolling cylinders.The at least one transmission gear can transmit the power emanating from the drive shaft to the at least one transmission shaft. The at least one transmission shaft and the at least one transmission gear can form a positive-locking mechanical transmission. The at least one transmission shaft and the at least one transmission gear can form a spur gear pair. The at least one transmission shaft can be a worm shaft, and the at least one transmission gear can be a spur gear, in particular an externally toothed spur gear. In one embodiment, the at least one transmission shaft can be a worm shaft, and the at least one transmission gear can be a spur gear with helical teeth. The at least one transmission shaft can be mounted on the transmission housing. The transmission housing can have at least one bearing journal. In one embodiment, the transmission housing can have at least two bearing journals.The at least one transmission shaft can be mounted on the at least one bearing journal. In one embodiment, the continuously variable transmission or the at least one transmission section can have a first transmission shaft with a first transmission element and a second transmission shaft with a second transmission element. The first transmission element can be connected to the first transmission shaft, and the second transmission element can be connected to the second transmission shaft. The first transmission shaft and the second transmission shaft can be connected to the cross member. The first transmission shaft and the second transmission shaft can be mounted on the cross member.

[0023] The at least one transmission gear can engage with the at least one profiled ring and the at least one transmission shaft. The at least one transmission element can transmit forces to the output-side rotor and drive the output-side rotor. The at least one transmission element can form a positive connection with the output-side rotor. The at least one transmission element can be in constant engagement with at least one rotor; the at least one rotor can be the output-side rotor or a further rotor. The output-side rotor can have a flat-side toothing. The output-side rotor can have a flat-side toothing on the side facing the drive-side rotor. The at least one transmission element can engage with the flat-side toothing. The at least one transmission element can be in constant engagement with the output-side rotor.The at least one transmission element can be a spur gear or a cylindrical gear.

[0024] The continuously variable transmission can have several transmission modules.

[0025] The control range of the continuously variable transmission can be expanded through the use of additional transmission modules. To expand the control range of the transmission, additional transmission sub-modules can be arranged between the drive-side rotor and the output-side rotor. The control range corresponds to the ratio of the largest gear ratio to the smallest gear ratio. A transmission module can comprise at least one gear ratio section and at least one transmission section. The at least one gear ratio section and the at least one transmission section can be designed as described above and have their function. At least one further disc-shaped rotor, referred to below as the further rotor for short, can be arranged between the drive-side rotor and the output-side rotor. The at least one further rotor can be arranged coaxially to the main axis.The at least one continuing rotor can have at least two profile rings on the output side, the side facing the output-side rotor. The at least one continuing rotor can have at least two profile rings on the output side, the side facing the output-side rotor, in the same way as the drive-side rotor.

[0026] The at least one further rotor can be designed on the side facing the drive-side rotor in the same way as the output-side rotor. The at least one further rotor can be arranged between two gear modules. The further rotor can be mounted on a cross member. Thus, the potential of the control range can be expanded as desired. The respective moving elements can each be driven via a control shaft.

[0027] The continuously variable transmission can have at least two transmission modules, wherein the transmission modules comprise at least one transmission section and at least one transmission section. The transmission modules can have the transmission section and transmission section described above. The transmission modules can have the functions described above.

[0028] In one embodiment, the continuously variable transmission can have a first transmission module, a second transmission module, and a third transmission module. A first transmission rotor can be arranged between the first transmission module and the second transmission module. A second transmission rotor can be arranged between the second and the third transmission module. The transmission section of the first transmission module can be driven by the drive-side rotor, as described above, and engage with the transmission section. The transmission section of the first transmission module can engage with the first transmission rotor on the drive side, as described above. The transmission section of the second transmission module can be driven by the first transmission rotor and engage with the transmission section. The transmission section of the second transmission module can engage with the second transmission rotor on the drive side.The transmission section of the third transmission module can be driven by the second continuous rotor. The transmission section of the third transmission module can engage the output-side rotor. The continuous rotors can be designed on the output side to correspond to the drive-side rotor. The continuous rotors can be designed on the drive side to correspond to the output-side rotor. "Drive side" here means the side of the at least one continuous rotor facing the drive-side rotor. "Output side" means the side of the at least one continuous rotor facing the output-side rotor. The control range of the continuously variable transmission can be increased tenfold per transmission module. A continuously variable transmission with three transmission modules can have a control range 10 x 10 x 0 times greater. Thus, the control range of the transmission can be expanded without restriction.

[0029] Description of the drawings

[0030] The invention is described below without limiting the general inventive concept by means of exemplary embodiments with reference to the drawings.

[0031] Figure 1 shows a section of an embodiment of the continuously variable transmission in a plane spanned by the main axis and the secondary axes.

[0032] Figure 2 shows a section of an embodiment of the continuously variable transmission in the direction of the second secondary axis. Figure 3 shows a perspective view of an embodiment of the continuously variable transmission.

[0033] Figure 4 shows a schematic representation of an embodiment of a continuously variable transmission with several transmission modules.

[0034] Figure 1 shows an embodiment of a continuously variable transmission 100. The continuously variable transmission 100 has a transmission housing 110, an input shaft 120, an output shaft 130, and at least two disc-shaped rotors 122, 132, hereinafter referred to as rotors. The transmission housing 110 can be cylindrical and can form the static base for the transmission 100. The input shaft 120, the output shaft 130, and the at least two rotors 122, 132 are arranged concentrically to a main axis 300. The input shaft 120 is connected to a drive-side disc-shaped rotor 122, hereinafter referred to as the drive-side rotor, and the output shaft 130 is connected to an output-side disc-shaped rotor 132, hereinafter referred to as the output-side rotor. The drive shaft 120 can be connected centrally and rotationally fixed to the drive-side rotor 122.A rotary motion can be transmitted to the drive-side rotor 122 via the drive shaft 120. The output-side rotor 132 can transmit a rotary motion to the output shaft 130. The output shaft 130 can be centrally and non-rotatably connected to the output-side rotor 132.

[0035] The input shaft 120 and / or the output shaft 130 can each extend through an opening in the transmission housing. The input shaft 120 can extend through a first opening, and the output shaft 130 can extend through a second opening. The first opening and the second opening can be arranged concentrically with the main axis 300. The input shaft 120 can be supported by the first opening, and the output shaft 130 can be supported by the second opening. The continuously variable transmission 100 includes at least one transmission section 140. The transmission section 140 includes at least one moving element (142, 144) and at least one transmission gear (152, 154).

[0036] In one embodiment, the continuously variable transmission or the at least one transmission section 140 can have a first movement element 142 and a second movement element 144. The first movement element 142 and the second movement element 144 can be arranged concentrically to a first secondary axis 400. The secondary axis 400 can be arranged orthogonally to the main axis 300. The first movement element 142 and the second movement element 144 can be a spindle, in particular a threaded spindle. A first transmission gear 152 can be arranged on the first movement element 142. A second transmission gear 154 can be arranged on the second movement element 144. The first transmission gear 152 and the second transmission gear 154 can each comprise a carriage 156, 158. The first transmission gear 152 and the second transmission gear 154 can each be arranged on a carriage 156, 158.A first carriage 156 can be arranged between the first transmission gear 152 and the first movement element 142. A second carriage 158 can be arranged between the second transmission gear 154 and the second movement element 144. The first transmission gear 152 and the second transmission gear 154 can be arranged axially displaceably on the respective movement element 142, 144 along the first secondary axis 400. The first movement element 142 and the second movement element 144 can be mounted on a cross member 180. The cross member 180 can be arranged between the first movement element 142 and the second movement element 144. The cross member 180 can extend along the main axis 300.The cross member 180 can be mounted on the drive side in the drive-side rotor 122 and on the output side in the output-side rotor 132. The first movement element 142 can have a first coupling element 212 or be connected to the first coupling element 212, in particular connected in a rotationally fixed manner. The second movement element 144 can have a second coupling element 222 or be connected to the second coupling element 222, in particular connected in a rotationally fixed manner. The first coupling element 212 and the second coupling element 222 can be a bevel gear. The first movement element 142 can be connected to a first control shaft 214 and the second movement element 144 can be connected to a second control shaft 224. The first control shaft 214 and the second control shaft 224 can have a bevel gear on the coupling element side. The first clutch element 212 can form a first clutch 210 with the first control shaft 214.The second clutch element 214 can form a second clutch 220 with the second control shaft 224. The first clutch 210 and the second clutch 220 can each be a bevel gear pair. The movement elements 142, 144 are each driven by the respective control shaft 214, 224. By means of a rotation transmitted via the respective control shaft 214, 224 to the respective clutch element 212, 222 and thus to the respective movement element 142, 144, the position of the respective transmission gear 152, 154 along the first secondary axis 400 on the respective movement element 142, 144 can be changed and / or adjusted.

[0037] By rotating the first movement element 142, the first transmission gear 152 can be axially displaced along the first secondary axis 400. By rotating the second movement element 144, the second transmission gear 154 can be axially displaced along the first secondary axis 400. The transmission gears 152, 154 can be displaced synchronously along the first secondary axis 400. By rotating at least two movement elements 142, 144, the at least two transmission gears 152, 154 can be displaced synchronously along the first secondary axis 400 in opposite directions. The first transmission gear 152 and the second transmission gear 154 can be driven by the drive-side rotor 122. The first transmission gear 152 and the second transmission gear 154 can be driven directly or indirectly by the drive-side rotor 122.

[0038] The drive-side rotor 122 can have at least two profile rings 124. The at least two profile rings 124 can be mounted 122 on the drive-side rotor. The at least two profile rings 124 can have teeth. The at least two profile rings 124 can have serrations, prongs, or wedges. The at least two profile rings 124 can have flat-sided toothing or be toothed rings. The teeth can be arranged on the output-side of the profile rings 124. The teeth can be arranged on the output-side of the profile rings 124 along the circumference of the at least two profile rings 124. At least one profile ring 124 can engage with the at least one transmission gear 152, 154. At least one profile ring 124 can engage with the first transmission gear 152 and the second transmission gear 154.The rotational movement of the drive-side rotor 122 can be transmitted via the profile rings 124 to the first transmission gear 152 and the second transmission gear 154. The at least two profile rings can each be displaced by one tooth length.

[0039] The at least two profile rings 124 can be mounted on the drive-side rotor 122 so that they can be displaced in the circumferential direction. The at least two profile rings 124 can be arranged and / or mounted on the drive-side rotor 122 such that they can each be displaced by one tooth length. This can prevent jamming with the first transmission gear 152 and / or the second transmission gear 154 and ensure reliable function of the transmission. The at least two profile rings 124 can be arranged radially from a center point of the drive-side rotor 122 concentrically to the main axis 300. The center point of the drive-side rotor 122 can correspond to the point where the main axis 300 passes through the drive-side rotor 122. Starting from the center point of the drive-side rotor 122, the radius of the profile rings 122 can increase in the radial direction.The drive-side rotor 122 can have two to N rings, where N can be any natural number less than 100, preferably less than 50, particularly preferably less than 30.

[0040] By changing the axial position of the first transmission gear 152 on the first moving element 142 and of the second transmission gear 154 on the second moving element 144 along the first secondary axis 400, the radial position of the first transmission gear 152 and the second transmission gear 154 can be changed starting from the center of the drive-side rotor 122. In this way, the ratio of the circumferences of the profile rings 124 to the transmission gears 152, 154 can be changed. The size ratio of the first transmission gear 152 and the second transmission gear 154 to the diameters of the profile rings 124 can decrease radially along the drive-side rotor 122, thereby changing the transmission ratio to one another. In addition, depending on the positions of the transmission gears 152, 154, the rotational speed of at least one transmission gear can change.The mechanical control for changing the gear ratios can be manual, electrical, pneumatic, or hydraulic. The control can be regulated via the control shafts 222, 224. The innermost position of the first gear 152 and the second gear 154 can represent the smallest gear ratio. In the innermost position, the gears can have the highest speed. The innermost position can be the position in which the first gear 152 and the second gear 154 have the smallest distance along the first secondary axis. The outermost position of the at least one gear can represent the largest gear ratio. With two gears, the first gear 152 and the second gear 154 can have the greatest distance in the outermost position along the first secondary axis 400.In the outermost position, the first gear 152 and the second gear 154 can have the lowest speed. The gear ratio can increase in the radial direction of the drive-side rotor 122, and the speed of the first gear 152 and the second gear 154 can decrease. In the embodiment shown in Figure 1, the transmission can, for example, have a 10-fold control range. The control range of a transmission specifies the ratio between the largest and smallest gear ratio.

[0041] The continuously variable transmission 100 has at least one transmission section 160 with at least one transmission shaft 162, 164 and at least one transmission element 172, 174. The at least one transmission shaft 162, 164 is arranged concentrically with a second secondary axis 500. The second secondary axis 500 is arranged orthogonally to the main axis 300. The first secondary axis 400 can be arranged parallel to the second secondary axis 500. The at least one transmission shaft 162, 164 can be a worm shaft or a shaft with spur gear teeth. The at least one transmission gear 152, 154 engages with the at least one transmission shaft 162, 164. The at least one transmission gear 152, 154 can transmit forces to the at least one transmission shaft 162, 164. The at least one transmission gear 152, 154 can engage both in the at least one transmission shaft 162, 164, and in at least one profile ring 124.The at least one transmission gear 152, 154 can transmit the power from the drive shaft 120 to the at least one transmission shaft 162, 164. The at least one transmission shaft 162, 164 and the at least one transmission gear 152, 154 can form a positive-locking mechanical transmission. The at least one transmission shaft 162, 164 can be mounted on the transmission housing 110. The transmission housing 110 can have at least one bearing journal. In one embodiment, the transmission housing 100 can have at least two bearing journals. The at least one transmission shaft 162, 164 can be mounted on the at least one bearing journal. In one embodiment, the continuously variable transmission or the at least one transmission section 160 may have a first transmission shaft 162 with a first transmission element 172 and a second transmission shaft 164 with a second transmission element 174.The first transmission element 172 can be connected to the first transmission shaft 162, and the second transmission element 174 can be connected to a second transmission shaft 164. The first transmission shaft 162 and the second transmission shaft 164 can be connected to the cross member 180. The first transmission shaft 164 and the second transmission shaft 164 can be mounted on the cross member 180.

[0042] The at least one transmission element 172, 174 can transmit forces to the output-side rotor 132 and drive the output-side rotor 132. The at least one transmission element 172, 174 can form a positive connection with the output-side rotor 132. The at least one transmission element 172, 174 can be in constant engagement with at least one rotor. The output-side rotor 132 can have a flat-side toothing. The output-side rotor 132 can have a flat-side toothing on the side facing the drive-side rotor. The at least one transmission element 172, 174 can engage with the flat-side toothing. The at least one transmission element 172, 174 can be in constant engagement with the output-side rotor 132. The at least one transmission element can be a spur gear or a cylindrical gear.Figure 2 shows a section of an embodiment of the continuously variable transmission 100 in the direction of the second secondary axis 400, looking towards the output side of the drive-side rotor 122. The continuously variable transmission 100 can have a housing 110, a transmission section 140, and a transmission section 160. The transmission section 140 can have a first transmission gear 152 and a second transmission gear 154. The first transmission gear can be connected to a first carriage 156, and the second transmission gear 154 can be connected to a second carriage 158. The first transmission gear 152 can be arranged on a first movement element 142, and the second transmission gear 154 can be arranged on a second movement element 144. The first movement element 152 can be rotated by a first control shaft 222 via a first clutch 210.As a result, the first transmission gear 162 can be axially displaced along the first secondary axis 400. The second movement element 154 can be set in rotation by a second control shaft 224 via a second clutch 220. As a result, the second transmission gear 164 can be axially displaced along the first secondary axis 400. The first transmission gear 152 and the second transmission gear 154 can engage with at least one profile ring 124. The rotation of the drive-side rotor 120 can be transmitted to the first transmission gear 152 and the second transmission gear 154 via the at least two profile rings 124. The continuously variable transmission 100 has a transmission section 160 with a first transmission element 172, a second transmission element 174, and at least one transmission shaft 162, 164. The at least one transmission shaft 162, 164 may be arranged concentrically to a second secondary axis 500.The first transmission element 172 can be arranged on a first transmission shaft 162, and the second transmission element 172 can be arranged on a second transmission shaft 164. The first transmission gear 152 and the second transmission gear 154 can be engaged with the at least one transmission shaft 162, 164. The at least one transmission shaft 162, 164 can be mounted on the transmission housing 100. The first transmission gear 152 can be engaged with the first transmission shaft 162, and the second transmission gear 154 can be engaged with the second transmission shaft 164.

[0043] Figure 3 shows a perspective view of an embodiment of the continuously variable transmission 100, with a portion of the transmission housing 100 cut out. Figure 3 shows a perspective view looking toward the drive shaft 120. A portion of the transmission housing 110 is cut out, revealing the interior of the housing 110. The drive shaft 120 is connected to the drive-side rotor 122. Profile rings 124 can be arranged and / or mounted on the drive-side rotor 122. At least one transmission gear 152, 154 can engage with at least one profile ring 124. The rotational movement of the drive shaft can thus be transmitted to the at least one transmission gear 152, 154. The at least one transmission gear 152, 154 can be arranged on at least one movement element 142, 144 (not shown).

[0044] The at least two profile rings 124 can be mounted on the drive-side rotor 122 so as to be displaceable in the circumferential direction. The drive-side rotor 122 can have at least one recess 126. The respective profile rings can have at least one extension 128 on the drive-side of the respective profile ring 124. The at least one extension 128 can be received in the at least one recess 126. The at least one extension 128 can be mounted in the at least one recess 126. The at least one recess 128 can form a sliding bearing for the associated profile ring. Each profile ring 124 can be mounted by at least one recess 128. The number of recesses 126 can correspond to the number of extensions 128. The drive-side rotor 122 can have a plurality of recesses 126. The drive-side rotor 122 can have 1 - 10 recesses 126.The at least one extension 128 can have a shorter length in the circumferential direction than the recess 126. This allows the extension 126 to move in the circumferential direction within the recess 128. The recess 128 can have a limit on both sides in the circumferential direction. The limit can define a maximum movement in the circumferential direction. In one embodiment, the maximum possible movement is one tooth length of the profile ring.

[0045] Figure 4 shows a schematic representation of an embodiment of a continuously variable transmission 100 with multiple transmission modules. The continuously variable transmission 100 can have multiple transmission modules. By using additional transmission modules, the control range of the continuously variable transmission can be expanded. To expand the control range of the transmission, additional transmission modules can be arranged between the drive-side rotor and the output-side rotor. The control range corresponds to the ratio of the largest gear ratio to the smallest gear ratio.

[0046] A transmission module can comprise at least one transmission section 140 and at least one transmission section 160. The at least one transmission section 140 and the at least one transmission section 160 can be designed as described above and have their function. At least one continuing disc-shaped rotor 190-1, 190-2, hereinafter referred to as continuing rotor 190-1, 190-2, can be arranged between the drive-side rotor 122 and the output-side rotor 132. The at least one continuing rotor 190-1, 190-2 can be arranged coaxially to the main axis 300. The at least one continuing rotor 190-1, 190-2 can be provided with at least two profile rings on the side facing the output-side rotor 132 in the same way as the drive-side rotor 122.The at least one continuing rotor 190-1, 190-2 can be configured on the side facing the drive-side rotor 122 in the same way as the output-side rotor 132. The at least one continuing rotor 190-1, 190-2 can be arranged between two transmission modules. The at least one continuing rotor 190-1, 190-2 can be mounted on a cross member 180-1, 180-2, 180-3. Thus, the potential of the control range can be increased as desired. The respective movement elements can each be driven via a control shaft.

[0047] In one embodiment, the continuously variable transmission can have three transmission modules. A first transmission module can include a first transmission section 140-1, a first transmission section 160-1, and a first cross member 180-1. A second transmission module can include a second transmission section 140-2, a second transmission section 160-2, and a second cross member 180-2. A third transmission module can include a third transmission section 140-3, a third transmission section 160-3, and a third cross member 180-3. A first transmission rotor 190-1 can be arranged between the first transmission module and the second transmission module. A first transmission rotor 190-2 can be arranged between the second transmission module and the third transmission module. The movement elements of the transmission modules can be arranged along or parallel to the first secondary axis 400.The transmission shafts of the transmission modules can be arranged along or parallel to the first secondary axis 400.

[0048] The respective transmission sections can each comprise a first transmission gear 152-1, 152-2, 152-3 and a second transmission gear 154-1, 154-2, 154-3. The first transmission gear 152-1 and the second transmission gear 154-1 of the first transmission module can engage with at least one profile ring arranged and / or mounted on the drive-side rotor 122. The first transmission gear 152-2 and the second transmission gear 154-2 of the second transmission module can engage with at least one profile ring arranged and / or mounted on the first continuing rotor 190-1. The first transmission gear 152-3 and the second transmission gear 154-3 of the third transmission module can engage with at least one profile ring arranged and / or mounted on the second continuing rotor 190-2.The first transmission element 172-1 and the second transmission element 174-1 of the first transmission module can engage with the first extending rotor 190-1. The first transmission element 172-2 and the second transmission element 174-2 of the second transmission module can engage with the second extending rotor 190-2. The first transmission element 172-3 and the second transmission element 174-3 of the third transmission module can engage with the output-side rotor. In the embodiment shown in Fig. 4, the transmission can have a 10 x 10 x 0-fold control range due to the three transmission modules. The control range of the continuously variable transmission can be increased tenfold per transmission module. The control range of the transmission can thus be expanded without restriction.

[0049] List of reference symbols

[0050] 100 Continuously variable transmission

[0051] 110 Gearbox housing

[0052] 120 drive shaft

[0053] 122 drive-side rotor

[0054] 124 profile rings

[0055] 126 recess

[0056] 128 extension

[0057] 130 Output shaft

[0058] 132 output-side rotor

[0059] 140 Translation section

[0060] 142 first movement element

[0061] 144 second movement element

[0062] 152 first gear wheel

[0063] 154 second gear wheel

[0064] 156 first sled

[0065] 158 second sled

[0066] 160 transmission section

[0067] 162 first transmission wave

[0068] 164 second transmission wave

[0069] 172 first transmission element

[0070] 174 second transmission element

[0071] 180 traverse

[0072] 210 first clutch

[0073] 212 first coupling element

[0074] 214 first control shaft

[0075] 220 second clutch second clutch element first control shaft main axis first secondary axis second secondary axis

Claims

Patent claims 1. Continuously variable transmission (100) comprising: a transmission housing (110), a drive shaft (120), an output shaft (130) and at least two disc-shaped rotors (122, 132), wherein the drive shaft (120), the output shaft (130) and the at least two disc-shaped rotors (122, 132) are arranged concentrically to a main axis (400), and wherein the drive shaft (120) is connected to a drive-side disc-shaped rotor (122) and the output shaft (130) is connected to an output-side disc-shaped rotor (132), and wherein at least one transmission section (140) is provided with at least one movement element (142, 144) and at least one transmission gear (152, 154), wherein the at least one movement element (140) is arranged concentrically to a first secondary axis (400), at least one Transmission section (160) with at least one transmission shaft (162, 164) and at least one transmission element (172, 174),wherein the at least one transmission shaft (162, 164) is arranged concentrically to a second secondary axis (500), wherein the first secondary axis (400) and the second secondary axis (500) extend orthogonally to the main axis (300), and wherein the at least one transmission gear (152, 154) is arranged on the at least one movement element (142, 144) so ​​as to be axially displaceable along the first secondary axis, and wherein the drive-side disc-shaped rotor (122) drives the at least one transmission gear (152, 154), the at least one transmission gear (152, 154) engages the at least one transmission shaft (160), and, the at least one transmission element (172, 174) is arranged on the at least one transmission shaft (162, 164), wherein the at least one transmission element (172, 174) drives the output-side disc-shaped rotor (132).

2. Continuously variable transmission (100) according to claim 1, characterized in that the drive-side disc-shaped rotor has at least two profile rings (124).

3. Continuously variable transmission (100) according to claim 2, characterized in that at least one profile ring (124) is in engagement with the at least one transmission gear (152, 154).

4. Continuously variable transmission (100) according to claim 2, characterized in that the at least two profile rings (124) are mounted on the at least one disc-shaped rotor (122) so as to be displaceable in the circumferential direction.

5. Continuously variable transmission (100), according to one of the preceding Claims, characterized in that the at least one movement element (142, 144) is connected to at least one control shaft (214, 224).

6. Continuously variable transmission (100) according to claim 5, characterized in that the at least one movement element (142, 144) is connected to at least one coupling element (212, 214) or has at least one coupling element (212, 214), wherein the at least one coupling element (212, 214) forms a coupling (210, 220) with the at least one control shaft (214, 224).

7. Continuously variable transmission (100) according to one of the preceding claims, characterized in that a first transmission gear (152) on a first movement element (142) and a second transmission gear (154) on a second movement element (144) are arranged so as to be axially displaceable along and / or parallel to the first secondary axis 400, wherein the first movement element (142) and the second movement element (144) are connected to a cross member (180).

8. Continuously variable transmission (100) according to one of the preceding claims, characterized in that the at least one transmission shaft (160) is mounted on the transmission housing (110).

9. Continuously variable transmission (100) according to one of the preceding claims, characterized in that a first transmission element (172) is connected to a first transmission shaft (162) and a second transmission element (174) is connected to a second transmission shaft (164), wherein the first transmission shaft (162) and the second transmission shaft (164) are connected to a cross member (180).

10. Continuously variable transmission (100) according to claim 2, characterized in that the at least one transmission gear (152, 154) is in engagement with at least one profile ring (124) and at least one transmission shaft (162, 164).

11. Continuously variable transmission (100) according to claim 5 or 6, characterized in that the at least one control shaft (214, 224) adjusts the position of the at least one transmission gear (152, 154) on the at least one moving element (142, 144).

12. Continuously variable transmission (100) according to one of the preceding claims, characterized in that the at least one transmission gear (152, 154) comprises at least one carriage (156, 158), wherein the at least one carriage (156, 158) is arranged between the at least one transmission gear (152, 154) and the at least one movement element (142, 144).

13. Continuously variable transmission (100) according to one of the preceding claims, characterized in that at least one continuing disc-shaped rotor (190-1, 190-2) is arranged between the drive-side disc-shaped rotor (122) and the output-side disc-shaped rotor (132).

14. Continuously variable transmission (100) according to claim 13, characterized in that the at least one further disc-shaped rotor (190-1, 190-2), wherein the at least one further disc-shaped rotor (190-1, 190-2) has at least two profile rings on the output side.

15. Continuously variable transmission (100) according to one of the preceding claims, characterized in that the continuously variable transmission (100) has at least two transmission modules, wherein the transmission modules comprise at least one transmission section (140-1, 140-2, 140-3) and at least one transmission section (160-1, 160-2, 160-3).

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