Actuating device for actuating a separating clutch, and drive for a hybrid or electric vehicle

Abstract

The invention relates to an actuating device (1) for actuating a separating clutch (33) of a drive (30), by means of which a drive machine (31) can be separated from and / or coupled to an output (32), comprising: a transmission unit (2) for connecting a drive unit (3) of the actuating device (1) to an output unit (4) of the actuating device (1), wherein the transmission unit (2) has a strain wave gearing and / or a cycloidal gear drive. The invention also relates to a drive (30) for a hybrid or electric vehicle comprising an actuating device (1).

Description

[0001] Actuating device for actuating a disconnect clutch and drive for a hybrid or electric vehicle

[0002] The invention relates to an actuating device for actuating a disconnect clutch of a drive, with which a drive motor can be disconnected from and / or coupled to an output. The invention also relates to a drive for a hybrid or electric vehicle.

[0003] To connect a drive motor, such as an internal combustion engine, to a drive system in, for example, axle-parallel P2 hybrid vehicles, it is known to provide a coupling for the drive motor. This allows purely electric operation without the need to tow the drive motor or internal combustion engine with an electric motor.

[0004] The clutch is typically actuated using an actuating device. Known actuating devices or clutch actuating mechanisms are, for example, mechanical via lever mechanisms or hydraulic via a central release bearing.

[0005] Conventional actuating devices with multi-stage gears to achieve a high gear ratio can be used with great difficulty or not at all in confined spaces between, for example, an engine damper and a drive transmission of a P2 hybrid vehicle.

[0006] Therefore, the object of the present invention is to provide an actuating device for actuating a disconnect clutch of a drive, with which a drive machine can be disconnected and coupled from and / or with an output, as well as a drive for a hybrid or electric vehicle, which can be manufactured cost-effectively and with minimal material usage and / or which has a small footprint and is robustly designed.

[0007] This problem is solved by the features of the independent claims. Further advantageous embodiments are the subject of the dependent claims. A first aspect of the present invention comprises an actuating device for actuating a disconnecting clutch of a drive, with which a drive machine can be disconnected from and / or coupled to an output.

[0008] The actuating device includes a transmission unit for connecting a drive unit of the actuating device to an output unit of the actuating device. The output unit can be used to displace a release bearing of a disconnect clutch of a drive, either directly or indirectly. The transmission unit can also include a reduction of torque generated by a drive unit. Furthermore, the output unit can be used to displace a release bearing of a disconnect clutch of a drive, such as a K0 clutch.

[0009] Furthermore, the transmission system incorporates a wave gear, also known as a tension wave gear, and / or a cycloidal gear. Both types of gears offer a high reduction ratio. This high ratio allows for the use of a low-power drive unit or electric motor, and therefore a compact one, to achieve the required torque or disengagement force. A compact drive unit can be axially narrow, thus saving space in the axial direction. In other words, these gear units have a shallow axial depth, for example, of a shaft, and can therefore be used in space-constrained applications. Moreover, these gear units are not self-locking.This is advantageous because, when the actuating device is used in a drive with a disconnect clutch, where the actuating device can open and / or close the disconnect clutch, the disconnect clutch can close automatically in the event of a fault. With a wave gear, the direction of rotation and gear ratio can be influenced, analogous to a planetary gear. In this case, gear ratios in the range of i=30 to i=100 are possible.

[0010] The actuating device can have a housing in which the transmission unit is arranged. The housing can be connected on one side to a drive unit of the actuating device and on the other side to a clutch housing of a disconnect clutch of a drive for a hybrid or electric vehicle. This ensures a secure and stable connection of the actuating device to a clutch housing.

[0011] Furthermore, the housing can be arranged on a drive unit of the actuating device. This allows for the production of larger modules, thereby saving costs.

[0012] Furthermore, the transmission device can have a transmission input for receiving torque from a drive device of the actuating device.

[0013] The gearbox input can have a non-switchable, torsionally rigid connection, so that a radial misalignment with a shaft of a drive unit of the actuating device can be compensated. The non-switchable, torsionally rigid connection can be an Oldham coupling, a cross-recess coupling, or a cross-slide coupling.

[0014] Furthermore, the gearbox input can include a shaft generator, designed as a disk, or a disk. The disk or shaft generator can be non-rotatably connected to the non-switchable, torsionally rigid connection. It is also possible for the disk to be elliptical.

[0015] Furthermore, the gearbox input can include a rolling bearing. The rolling bearing can be arranged, for example, radially on the outside, on a disk or on a shaft generator of the gearbox input of the gearbox assembly. The rolling bearing can be positively and / or frictionally connected to a disk or to a shaft generator of the gearbox input.

[0016] Furthermore, the rolling bearing or its inner ring can be shrink-fitted onto a disc or a shaft generator of the gearbox input. It is also possible that the rolling bearing has at least one elastically deformable ring or raceway, such as an inner ring and / or an outer ring, as well as rolling elements. The rolling elements can be arranged between the inner and outer rings or between the disc / shaft generator and the outer ring.

[0017] Furthermore, the transmission device can have a transmission output for transmitting torque from a transmission input of the transmission device. The transmission output can have a cylindrical bushing. The cylindrical bushing can be designed to be elastically deformable.

[0018] The cylindrical bushing can also have external teeth or be externally toothed. These external teeth can mesh with internal teeth on a ring gear of the transmission output. Furthermore, the external teeth can have fewer teeth than the internal teeth of the ring gear of the transmission output. This allows for a reduction in speed. The difference between the external and internal teeth can be two teeth. Therefore, the cylindrical bushing, also called a flexspline, and the ring gear of the transmission output, also called a circular spline, can move two teeth relative to each other with every revolution.

[0019] Furthermore, the cylindrical bushing can be designed to engage or mesh with a ring gear of the transmission output.

[0020] Furthermore, it may be provided that the cylindrical bushing is arranged on the outside of a rolling bearing of the gearbox input or on an outer bearing ring of a rolling bearing of the gearbox input.

[0021] Furthermore, the cylindrical bushing can form the so-called flexspline of a stress wave gear and / or a wave gear.

[0022] Alternatively or additionally, the cylindrical bushing can be connected to a housing of the actuating device in a rotationally fixed manner.

[0023] Furthermore, the transmission output can include a ring gear. The ring gear can be rigid. It can also have internal teeth or be internally toothed. The internal teeth can mesh with the external teeth of a cylindrical bushing of the transmission output. Additionally, the internal teeth can have more teeth than the external teeth of the cylindrical bushing of the transmission output. This allows for a reduction in speed. The difference between the external and internal teeth can be two teeth. Thus, the cylindrical bushing, also called a flex spline, and the ring gear of the transmission output, also called a circular spline, can move two teeth relative to each revolution. Furthermore, the ring gear can be designed to connect to a shaft of an output device for moving a release bearing of a disconnect clutch.

[0024] The ring gear can be connected to a housing of the actuating device. Alternatively, the ring gear can be connected to a shaft of an output device for moving a release bearing of a disconnect clutch.

[0025] Furthermore, the transmission assembly or output may include an output device for actuating a disconnect clutch, such as a knock-out clutch, and / or for converting a rotational motion into an axial motion. The output device may have a shaft with external teeth. The external teeth may be formed by a gear that is either integrally formed with the shaft or fixed to the shaft in a rotationally stable manner.

[0026] Furthermore, the output device can be mounted in a housing of the actuating device.

[0027] A ring gear of a gearbox output can also be non-rotatably connected to the shaft. Alternatively, a roller disc of a gearbox output can be non-rotatably connected to the shaft.

[0028] Furthermore, the actuating device may include a drive unit for generating torque. This drive unit may be designed as an electric motor.

[0029] Furthermore, the actuating device can be attached to and / or outside a clutch bell of a disconnect clutch of a drive for a hybrid or electric vehicle.

[0030] The drive unit can also be connected to a gearbox input of the gearbox unit in a torque-transmitting manner.

[0031] Furthermore, the drive unit may have a shaft that is connected to a gear input of the transmission unit in a torque-transmitting manner. The shaft of the drive unit and a gear input of the transmission unit may have parallel axes. A non-disengageable, torsionally rigid coupling may be arranged between the transmission unit and the drive unit, or at a gear input of the transmission unit and at the drive unit, to compensate for any radial misalignment between the shaft of the drive unit and the gear input.

[0032] Furthermore, the transmission device can have a transmission input for receiving torque from a drive device of the actuating device.

[0033] The gearbox input can be at least partially eccentric.

[0034] The transmission input can also include a disc that is eccentrically arranged on a shaft of a drive unit of the actuating device and / or is integrally formed with a shaft of a drive unit of the actuating device. The disc can be an eccentric. Furthermore, the disc can be fixed to a shaft of a drive unit of the actuating device in a rotationally fixed manner. Alternatively or additionally, the disc can be non-switchable and rotationally fixed to a transmission input of the transmission device.

[0035] Furthermore, the transmission device may be provided with a transmission input for receiving torque from a drive unit of the actuating device.

[0036] The transmission input can have a cam disc with curved sections, which can also be called cams. The cam disc can be arranged on a disk of the transmission input, so that a rotation of the disk causes a rotation of the cam disc.

[0037] Furthermore, the cam disc can have a first receptacle for a gear input disc and / or for a rolling bearing. The first receptacle can be arranged concentrically to the axis of rotation of the cam disc.

[0038] In addition, a rolling bearing can be arranged between the cam disc and the disc.

[0039] Furthermore, the cam disc can have at least one second receptacle for rollers of a roller disc of a transmission output of the transmission device in order to establish power transmission between the roller disc and the cam disc. Each second receptacle can be designed as a passage through the cam disc.

[0040] Several second recordings can be arranged in a circle that is concentric with or aligned to the axis of rotation of the cam disc.

[0041] Furthermore, the transmission device can have a transmission output for transmitting torque from a transmission input of the transmission device.

[0042] The transmission assembly and / or the transmission output can have at least one bolt for rolling a cam disk of a transmission input of the transmission assembly. Several bolts can be arranged in or toward a bolt ring in which a cam disk of a transmission input of the transmission assembly can roll. The at least one bolt or the bolt ring can be rotationally fixed to a housing of the actuating device. Alternatively or additionally, the at least one bolt can be formed by a housing of the actuating device.

[0043] Furthermore, it may be provided that a cam disc of a gearbox input of the gearbox device and the at least one bolt are geometrically matched to each other.

[0044] Furthermore, it is possible that a cam disc of a gearbox input of the gearbox device is adapted on the outside to the at least one bolt, so that the cam disc and the at least one bolt can mesh together.

[0045] Furthermore, the transmission output can have a roller disc as the output. The roller disc can have at least one roller that engages in and / or rolls in at least one second receptacle of a cam disc of a transmission input of the transmission device in order to establish a power transmission between the roller disc and the cam disc.

[0046] Furthermore, the roller disc can be formed by a housing or by a second housing section of the actuating device.

[0047] Furthermore, the roller disc can be non-rotatably connected to an output shaft of an output device of the actuating device. A second aspect of the present invention comprises a drive for a hybrid or electric vehicle.

[0048] It is expressly pointed out that the features of the actuating device, as mentioned under the first aspect, can be used individually or in combination in the drive.

[0049] In other words, the features relating to the actuating device mentioned above under the first aspect of the invention can also be combined with further features under the second aspect of the invention.

[0050] A drive system for a hybrid or electric vehicle has a drive motor, such as an internal combustion engine, and an output, such as an input to a gearbox or a connection to vehicle wheels.

[0051] Furthermore, the drive includes an actuating device according to the first aspect for actuating a disconnecting coupling of the drive, with which the drive machine can be disconnected and coupled from and / or with the output.

[0052] Furthermore, the drive can include a disconnect clutch, such as a so-called knock-out clutch, for disconnecting and / or coupling the drive motor to the output. The disconnect clutch can include a clutch bell and / or a ramp actuator for moving a release bearing and / or a release bearing itself. The disconnect clutch can be actuated, for example, via the ramp actuator, by means of an actuating device. The ramp actuator can convert a rotational movement into an axial movement to actuate the disconnect clutch.

[0053] The actuating device can be located outside or on the coupling bell. This allows the disconnect coupling to be initially manufactured without an actuating device, reducing complexity and thus saving costs.

[0054] Furthermore, the actuating device can be arranged on the release bearing in such a way that the release bearing is axially movable from the actuating device. In this way, the disconnect clutch can disconnect or connect the drive motor to and / or the output. Additionally, the drive can include another drive motor, such as an electric motor. This additional drive motor can be operatively connected to the drive motor via a gear connection to generate a common driving force.

[0055] The gear connection can have one gear per drive machine, which mesh with each other.

[0056] The drive motor can also be coupled and disconnected from the gear connection, e.g. by means of a disconnecting coupling.

[0057] The additional drive motor and the drive motor can form an axis-parallel or coaxial P2 hybrid drive.

[0058] The invention concept presented above is expressed again and in addition in other words below.

[0059] This concept – in simplified terms – involves the use of a so-called harmonic drive, or a voltage wave gear or wave gear, as an electric clutch actuator for operating the knock-out clutch or the disconnect clutch in an axle-parallel or coaxial P2 hybrid vehicle. The disconnect clutch allows an internal combustion engine to be coupled to or disconnected from the drive system.

[0060] In summary, rotation of the drive unit can cause rotation of the output shaft, which in turn allows a ramp actuator of the drive unit to move the release bearing of the disconnect clutch – to put it simply. Thus, a rotational movement, translated by the wave gear, is converted into an axial movement, allowing the drive unit to be disconnected and / or coupled to the output unit.

[0061] The invention is explained in more detail below with reference to exemplary embodiments in conjunction with the accompanying drawings. These schematically show:

[0062] Fig. 1 is a sectional view of a drive for a hybrid vehicle; Fig. 2 is a sectional view of the actuating device from Fig.

[0063] 1 according to a first embodiment;

[0064] Fig. 3 shows a sectional view along line AA from Fig. 2;

[0065] Fig. 4 shows a sectional view of the actuating device from Fig.

[0066] 1 according to a second embodiment; and

[0067] Fig. 5 shows an exploded view of the actuating device.

[0068] Fig. 4.

[0069] In the following description, the same reference symbols are used for the same objects.

[0070] Figure 1 shows a sectional view of a drive 30 for a hybrid vehicle.

[0071] Figure 1 shows in more detail that the drive 30 has a drive machine 31, such as an internal combustion engine, and an output 32, such as an input to a gearbox or a connection to vehicle wheels.

[0072] Furthermore, the drive 30 has an actuating device 1 for actuating a disconnecting clutch 33 of the drive 30, with which the drive machine 31 can be disconnected from and / or coupled to the output 32. The actuating device 1 is described in detail below.

[0073] Furthermore, Figure 1 shows that the drive 30 comprises a disconnecting clutch 33, such as a so-called K0 clutch, for disconnecting and / or coupling the drive motor 31 from or to the output 32. The disconnecting clutch 33 has a clutch bell 34, a ramp actuator 38 (simplified representation) for moving a release bearing 35, and a release bearing 35.

[0074] The actuating device 1 allows the disconnect clutch 33 to be actuated via the ramp actuator 38. The ramp actuator 38 can convert a rotational movement into an axial movement to actuate the disconnect clutch 33. Furthermore, the actuating device 1 is arranged outside and on the clutch housing 34. In addition, the actuating device 1 is arranged on the release bearing 35 such that the release bearing 35 can be moved axially indirectly by the actuating device 1.

[0075] According to Figure 1, the drive 30 has another drive machine 36, such as an electric machine.

[0076] The second drive machine 36 is operatively connected to the drive machine 31 via a gear connection 37 to generate a common driving force. The gear connection 37 has one gear per drive machine 31 and 36, which mesh with each other. The drive machine 31 can be coupled to and disconnected from the gear connection 37 by means of the disconnecting clutch 33.

[0077] With reference to Figure 1, it can be noted that the further drive machine 36 and the drive machine 31 form an axis-parallel P2 hybrid drive.

[0078] Figure 2 shows a sectional view of the actuating device 1 from Figure 1 according to a first embodiment, wherein Figure 3 shows a sectional view along the line AA from Figure 2.

[0079] For the sake of simplicity, figures 2 and 3 are described together below.

[0080] The figures show the actuating device 1 for actuating the disconnecting coupling 33 of the drive 30, with which the drive machine 31 can be disconnected from and / or coupled to the output 32.

[0081] The actuating device 1 has a transmission unit 2 for connecting a drive unit 3 of the actuating device 1 to an output unit 4 of the actuating device 1. The release bearing 35 of the disconnect clutch 33 is displaceable or indirectly displaceable by the output unit 4. The transmission unit 2 comprises a reduction of a torque generated by the drive unit 3.

[0082] The transmission unit 3 incorporates a wave gear. This wave gear has a high reduction ratio. Furthermore, it has a shallow installation depth, making it suitable for use in space-constrained applications. Additionally, this gear is not self-locking. This is advantageous because, when the actuating device 1 is used in the drive 30 with a disconnect clutch 33, where the actuating device 1 can open and / or close the disconnect clutch 33, the disconnect clutch 33 can close automatically in the event of a malfunction. Similar to a planetary gear, the direction of rotation and the gear ratio of a wave gear can also be adjusted. In this case, gear ratios in the range of i=30 to i=100 are possible.

[0083] According to Figure 2, the actuating device 1 also has a housing 21 in which the transmission unit 2 is arranged. The housing 21 can be connected, or is connected as shown in Figure 1, on the one hand to a drive unit 3 of the actuating device 1 and on the other hand to the clutch bell 34 of the disconnecting clutch 33.

[0084] Furthermore, Figure 2 shows that the transmission device 2 has a transmission input 5 for receiving a torque from a drive device 3 of the actuating device 1.

[0085] The gearbox input 5 has a non-switchable, torsionally rigid connection 6, so that a radial misalignment of the actuating device 1 relative to a shaft 3A of a drive unit 3 of the actuating device 1 can be compensated. The non-switchable, torsionally rigid connection 6 is an Oldham coupling.

[0086] As shown in Figures 2 and 3, the gear input 5 has an elliptically shaped disk 7 which is connected to the non-switchable, torsionally rigid connection 6 in a rotationally fixed manner.

[0087] Furthermore, the gearbox input 5 has a rolling bearing 8, which is arranged radially on the outside of the disc 7. The rolling bearing 8 is positively and / or frictionally connected to the disc 7. For this purpose, the rolling bearing 8, or rather its inner bearing ring (not shown), is shrunk onto the disc 7.

[0088] As can be further seen in Figures 2 and 3, the rolling bearing 8 has an elastically deformable ring or raceway 8A, such as an outer bearing ring 8A, as well as rolling elements 8B. The rolling elements 8B are arranged between the inner bearing ring (not shown) and the outer bearing ring 8A.

[0089] Furthermore, Figures 2 and 3 show that the transmission device 2 has a transmission output 9 for transmitting a torque from the transmission input 5. The transmission output 9 has a cylindrical bushing 10, which is elastically deformable and has external teeth. The external teeth engage with or mesh with internal teeth of a ring gear 11 of the transmission output 9.

[0090] The external teeth have fewer teeth than the internal teeth of the ring gear 11 of the transmission output 9. The difference between the external and internal teeth can be two teeth. Thus, the cylindrical bushing 10, also called the flex spline, and the ring gear 11 of the transmission output 9, also called the circular spline, perform a relative movement of two teeth with each revolution.

[0091] As already indicated, the cylindrical bushing 10 is designed to engage or mesh with a ring gear 11 of the transmission output 9.

[0092] According to Figures 2 and 3, the cylindrical bushing 10 is arranged on the outside of the rolling bearing 8 or on the outer bearing ring 8A of the rolling bearing 8. As already mentioned, the cylindrical bushing 10 forms the so-called flexspline of the wave gear.

[0093] As shown in Figure 2, the cylindrical bushing 10 is rotationally fixed to the housing 21 of the actuating device 1. Similar to a planetary gear system, the direction of rotation and gear ratio can be influenced by selecting the input, output, and stationary part of the gear system.

[0094] As already mentioned, the transmission output 9 has a ring gear 11. The ring gear 11 has internal teeth that mesh with the external teeth of the cylindrical bushing 10. As already explained, the internal teeth have more teeth than the external teeth of the cylindrical bushing 10.

[0095] Furthermore, the ring gear 11 is designed for connection with a shaft 12 of an output device 4 for displacing a release bearing 35 of a disconnect clutch 33. Thus, the ring gear 11 is rotationally fixed to a shaft 12 of an output device 4 for displacing a release bearing 35 of a disconnect clutch 33.

[0096] Furthermore, the transmission output includes an output device 4 for actuating the disconnect clutch 33 from Figure 1 and / or for converting a rotational movement into an axial movement. The output device 4 has a shaft 12 with external teeth formed by a gear 13, which is integrally formed with the shaft 12.

[0097] Furthermore, the output device 4 is mounted in the housing 21 of the actuating device 1, with the ring gear 11 being rotatably connected to the shaft 12.

[0098] As already indicated several times, the actuating device 1 has a drive unit 3 for generating torque. This is designed as an electric motor 3.

[0099] Furthermore, Figure 1 shows that the actuating device 1 can be attached on and outside the coupling bell 34 of the disconnecting coupling 33 of the drive 30.

[0100] According to Figure 2, the drive unit 3 has a shaft 3A which is connected to the gear input 5 of the transmission unit 2 in a torque-transmitting manner. The shaft 3A of the drive unit 3 and the gear input 5 of the transmission unit 2 have parallel axes, with the non-switchable, torsionally rigid clutch 6 arranged between the transmission unit 2 and the drive unit 3 or at the gear input 5 and at the drive unit 3.

[0101] Essentially, as shown in Figure 1, a rotation of the drive unit 3 causes a rotation of the shaft 12 of the output unit 4, which in turn allows a ramp actuator 38 of the drive 30 to move the release bearing 35 of the disconnect clutch 33 – to simplify the representation. Thus, a rotational movement, translated by means of the wave gear, is converted into an axial movement, allowing the drive unit 31 to be disconnected and / or coupled to the output unit 32.

[0102] Figure 4 shows a sectional view of the actuating device 1 from Figure 1 according to a second embodiment, with Figure 5 showing an exploded view of the actuating device 1 from Figure 4.

[0103] For the sake of simplicity, figures 4 and 5 are described together below.

[0104] The figures show the actuating device 1 for actuating the disconnecting clutch 33, with which a drive motor 31 can be disconnected from and / or coupled to an output 32. The actuating device 1 has a transmission unit 2 for connecting a drive unit 3 of the actuating device 1 to an output unit 4 of the actuating device 1. The release bearing 35 of the disconnecting clutch 33 can be displaced or indirectly displaced by the output unit 3. The transmission unit 2 comprises a reduction of a torque generated by the drive unit 3.

[0105] Furthermore, the transmission unit 3 has a cycloidal gear. The cycloidal gear has a high reduction ratio. It also has a shallow depth and can therefore be used in space-constrained areas. In addition, the aforementioned cycloidal gear does not self-lock. This is advantageous because, when the actuating device 1 is used in the drive 30 with a disconnect clutch 33, where the actuating device 1 can open and / or close the disconnect clutch 33, the disconnect clutch 33 can close automatically in the event of a malfunction. With a cycloidal gear, the direction of rotation and gear ratio can also be influenced, analogous to a planetary gear. In this case, gear ratios in the range of i=30 to i=100 are possible.

[0106] As shown in Figure 4, the actuating device 1 also has a housing 21 in which the transmission unit 2 is arranged. The housing 21 can be connected, or is connected as shown in Figure 1, on the one hand to a drive unit 3 of the actuating device 1 and on the other hand to the clutch bell 34 of the disconnecting clutch 33.

[0107] Furthermore, Figure 4 shows that the transmission device 2 has a transmission input 5 for receiving a torque from a drive device 3 of the actuating device 1.

[0108] The gearbox input 5 has a disc 7 which is arranged eccentrically on a shaft 3A of a drive unit 3 of the actuating device 1 or is formed integrally with it. The disc 7 is a so-called eccentric.

[0109] Furthermore, as shown in Figures 4 and 5, the transmission input 5 has a cam disk 14 with cam sections 15, so-called cams. The cam disk 14 is arranged on the disk 7, such that a rotation of the disk 7 causes a rotation of the cam disk 14. More precisely, the cam disk 14 has a first receptacle 16 for the disk 7 and for a rolling bearing 8, the first receptacle 16 being arranged concentrically to the axis of rotation D of the cam disk 14. A rolling bearing 8 is arranged between the cam disk 14 and the disk 7.

[0110] Furthermore, as shown in Figure 5, the cam disk 14 has several second receptacles 17 for rollers 20 of a roller disk 19 of a transmission output 9 of the transmission device 3, in order to establish a power transmission between the roller disk 19 and the cam disk 14. Each second receptacle 17 is designed as a passage through the cam disk 14.

[0111] Several second recordings 17 are arranged in a circle that is concentric to the axis of rotation D of the cam disk 14.

[0112] Furthermore, the gearbox input 5 has a rolling bearing 8, which is arranged radially on the outside of the disc 7. The rolling bearing 8 is positively and / or frictionally connected to the disc 7. For this purpose, the rolling bearing 8, or rather its inner ring, is shrunk onto the disc 7.

[0113] Furthermore, Figures 4 and 5 show that the transmission device 2 has a transmission output 9 for transmitting a torque from the transmission input 5.

[0114] Furthermore, the transmission device 2 has several bolts 18 for rolling the cam disc 14, which are arranged in or towards a bolt ring in which the cam disc 14 rolls.

[0115] The bolts 18 or the bolt ring are rotationally fixed to the housing 21 of the actuating device 1. More precisely, the bolts 18 are formed by the housing 21 of the actuating device 1.

[0116] Furthermore, the cam disc 14 and the bolts 18 are geometrically matched to each other, with the cam disc 14 being adapted to the bolts 18 on the outside so that the cam disc 14 and the bolts 18 can interlock.

[0117] Furthermore, Figures 4 and 5 show that the transmission output 9 has a roller disc 19 as its output. The roller disc 19 has several rollers 20 which engage in the second receptacles 17 of the cam disc 14 and / or roll within them to establish a power transmission between the roller disc 19 and the cam disc 14.

[0118] Furthermore, the transmission device 2 includes an output device 4 for actuating the disconnect clutch 33 from Figure 1 and / or for converting a rotational movement into an axial movement.

[0119] The output device 4 has a shaft 12 with external teeth formed by a gear 13 which is integrally formed with the shaft 12.

[0120] Furthermore, the output device 4 is mounted in the housing 21 of the actuating device 1, wherein the roller disc 19 of the gearbox output 9 is non-rotatably connected to the shaft 12.

[0121] As already indicated several times, the actuating device 1 has a drive unit 3 for generating torque. This is designed as an electric motor 3.

[0122] Furthermore, Figure 1 shows that the actuating device 1 can be attached on and outside the coupling bell 34 of the disconnecting coupling 33 of the drive 30.

[0123] According to Figure 4, the drive unit 3 has a shaft 3A which is connected to the gear input 5 of the gear unit 2 in a torque-transmitting manner. The shaft 3A of the drive unit 3 and the gear input 5 of the gear unit 2 have parallel axes.

[0124] Essentially, as shown in Figure 1, a rotation of the drive unit 3 causes a rotation of the shaft 12 of the output unit 4, which in turn allows a ramp actuator 38 of the drive 30 to move the release bearing 35 of the disconnect clutch 33 – in simplified terms. Thus, a rotational movement, translated by means of the wave gear, is converted into an axial movement, allowing the drive unit 31 to be disconnected and / or coupled to the output unit 32. (List of reference symbols)

[0125] Actuating device 30 drive

[0126] Gear unit 31 Drive machine

[0127] Drive unit / electric 32 output

[0128] Motor 33 Disconnect coupling A Shaft 34 Coupling bell

[0129] Output device 35 Release bearing

[0130] Gearbox input 36 further drive machine non-switchable, torsionally rigid Ver37 gear connection binding / Oldham coupling 38 ramp actuator disc

[0131] Rolling bearing D axis of rotation A elastically deformable ring / outer bearing ring B rolling element

[0132] Gearbox output 0 cylindrical bushing 1 ring gear 2 output shaft 3 gear 4 cam disc 5 cam sections 6 first mounting 7 second mounting 8 bolt 9 roller disc 0 roller 1 housing

Claims

Patent claims 1. Actuating device (1) for actuating a disconnect coupling (33) of a drive (30), with which a drive machine (31) can be disconnected and coupled from and / or to an output (32), comprising: - a transmission device (2) for connecting a drive device (3) of the actuating device (1) with an output device (4) of the actuating device (1), characterized in that the transmission device (3) has a wave gear and / or a cycloidal gear.

2. Actuating device according to claim 1 , - wherein the transmission device (2) has a transmission input (5) for receiving a torque from a drive device (3) of the actuating device (1), - wherein the transmission input (5) has a non-switchable, torsionally rigid connection (6) so that a radial offset of the actuating device (1 ) to a shaft (3A) of a drive unit (3) of the actuating device (1 ) can be compensated.

3. Actuating device according to claim 1 or 2, - wherein the transmission device (2) has a transmission output (9) for transmitting a torque from a transmission input (5) of the transmission device (2), - wherein the transmission input (5) has a disc (7) which is elliptically shaped, and / or - wherein the transmission output (9) has a cylindrical bushing (10), and - wherein the cylindrical bushing (10) is designed to be elastically deformable.

4. Actuating device according to one of the preceding claims, - wherein the transmission device (2) has a transmission output (9) for transmitting a torque from a transmission input (5) of the transmission device (2), - wherein the transmission output (9) has a ring gear (11 ), - wherein the ring gear (11) has internal teeth or is designed with internal teeth, and - wherein the internal teeth have more teeth than the external teeth of a cylindrical bushing (10) of the transmission output (9).

5. Actuating device according to one of the preceding claims, - wherein the actuating device (1 ) has a drive unit (3) for generating a torque, - wherein the drive device (3) is designed as an electric motor (3), and - wherein the drive device (3) is connected to a gear input (5) of the gear device (2) in a torque-transmitting manner.

6. Actuating device according to one of the preceding claims, - wherein the transmission device (3) has a transmission input (5) for receiving a torque from a drive device (3) of the actuating device (1), and - wherein the transmission input (5) has a disk (7) which is arranged eccentrically on a shaft (3A) of a drive unit (3) of the actuating device (1) and / or is formed integrally with a shaft (3A) of a drive unit (3) of the actuating device (1).

7. Actuating device according to one of the preceding claims, - wherein the transmission device (3) has a transmission input (5) for receiving a torque from a drive device (3) of the actuating device (1), wherein the transmission input (5) has a cam disk (14) with cam sections (15).

8. Actuating device according to one of the preceding claims, - wherein the transmission device (2) has at least one bolt (18) for rolling a cam disk (14) of a transmission input (5) of the transmission device (2), - wherein at least one bolt (18) is non-rotatably connected to a housing (21) of the actuating device (1), and / or - wherein the at least one bolt (18) is formed by a housing (21) of the actuating device (1).

9. Actuating device according to one of the preceding claims, - wherein the transmission device (2) has a transmission output (9) for transmitting a torque from a transmission input (5) of the transmission device (2), and - wherein the gearbox output (9) has a roller disc (19) as the output.

10. Having a drive system (30) for a hybrid or electric vehicle: - a drive motor (31 ), - a drive (32), and - an actuating device (1 ) according to one of the preceding claims for actuating a disconnecting coupling (33) of the drive (30), with which the drive machine (31 ) can be disconnected and coupled from and / or with the output (32).

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