Shifting device for engaging and / or disengaging a clutch device, and clutch device for a motor vehicle

Abstract

The invention relates to a shifting device (1) for engaging and / or disengaging a clutch device for a motor vehicle, having: - a securing device (2) for securing the shifting device (1) to a housing of a clutch device for conjoint rotation therewith and for holding and / or supporting additional devices of the shifting device (1), - an actuating device (3) for initiating an axial displacement of a disengagement bearing (5) of the shifting device (1), - a displacing device (4) for axially displacing a disengagement bearing (5) of the shifting device (1), the securing device (2) and the displacing device (4) being designed and configured such that a rotation of the displacing device (4) relative to the securing device (2) brings about a change in the axial distance in the axial direction (A) between the displacing device (4) and the securing device (2), and - at least one connecting device (6) which is provided between the actuating device (3) and the displacing device (4) and transmits a rotational movement of the actuating device (3) to the displacing device (4), the at least one connecting device (6) being connected to the actuating device (3) and / or to the displacing device (4) with play. The invention further relates to a clutch device for a motor vehicle.

Description

[0001] Retraction device for engaging and / or disengaging a clutch device, as well as a clutch device for a motor vehicle

[0002] The invention relates to a return device for engaging and / or disengaging a clutch device of a motor vehicle and to a clutch device for a motor vehicle with a return device.

[0003] Hydraulic reverse mechanisms are known to be used to perform shifting operations within the clutch system of a motor vehicle. However, their use requires a hydraulic supply circuit. This circuit can develop leaks, which can prevent or impair the function of the reverse mechanism. Furthermore, it is structurally complex to mount and / or maintain a hydraulic supply circuit, including hydraulic actuators, in a confined space.

[0004] Therefore, the object of the present invention is to provide a return device for engaging and / or disengaging a clutch device of a motor vehicle, as well as a clutch device for a motor vehicle, which can be manufactured cost-effectively and with minimal material usage and / or is of simple design and / or ensures assembly and easy maintenance in confined spaces within a clutch device.

[0005] This problem is solved by the features of the independent patent claims. Further advantageous developments are the subject of the dependent claims.

[0006] A first aspect of the present invention comprises a return device for engaging and / or disengaging a clutch device of a motor vehicle. A motor vehicle can be, for example, a hybrid vehicle or a battery-electric vehicle.

[0007] The return device has a fastening device, which can also be called a mounting plate, for rotationally securing the return device to a housing of a coupling device and / or for holding and / or supporting other components of the return device.

[0008] Furthermore, the return mechanism includes an actuating device, which can also be called a drive disc, for initiating an axial displacement of a release bearing of the return mechanism. The actuating device can be rotatably mounted on and / or rotatably relative to the mounting device.

[0009] Furthermore, the return mechanism has a sliding device, which can also be called a ramp disc, for axially displacing a release bearing of the return mechanism. The sliding device can be rotatably mounted on and rotatable relative to the mounting device and relatively displaceable relative to the mounting device and the actuating device.

[0010] The fastening device and the sliding device are designed and configured in such a way that a rotation of the sliding device relative to the fastening device causes a change in the axial distance between the sliding device and the fastening device.

[0011] More specifically, the sliding device can have several or at least one ramp or ramp track, in which a ball of the return device can be arranged in order to change the axial distance between the mounting device and the sliding device in accordance with the ramp or track profile of the at least one ramp or ramp track when the sliding device is rotated relative to the mounting device.

[0012] Opposite the at least one ramp, the fastening device can have several or at least one ball receptacle on one of its end faces, in which a ball of the return device can be rotatably arranged. One or each ball receptacle can be at least partially designed as a spherical shell.

[0013] As a result, in the case of multiple ramps and balls, the positions of the balls relative to the fastening device can be fixed or fixed, whereas the positions of the balls relative to the sliding device can be changed due to the presence of at least one ramp.

[0014] Thus, with the aid of at least one ramp and a ball, a rotational movement of the actuating device can be converted into a rotational and translational movement of the sliding device. Due to the translational movement, the first and second axial distances, or the first and second states, can then be achieved. Furthermore, the fastening device can be arranged between the actuating device and the sliding device.

[0015] Furthermore, the return mechanism comprises at least one connecting device arranged between the actuating device and the sliding device, which transmits a rotational movement from the actuating device to the sliding device. This transmission can be clockwise or counterclockwise. Thus, when the actuating device is rotated, the sliding device can also be rotated relative to the mounting device simultaneously via the connection of the at least one connecting device.

[0016] Furthermore, the at least one connecting device can be rotatably arranged and / or axially displaceable on the actuating device and / or on the displacement device.

[0017] Furthermore, the at least one connecting device is connected to the actuating device and / or the sliding device with play, e.g., in the radial and / or tangential direction. This compensates for mechanical over-constraints within the return mechanism, ensuring trouble-free operation and reducing friction. The play between the at least one connecting device and the actuating device and / or between the at least one connecting device and the sliding device prevents mechanical over-constraints of the sliding device and the fastening device via the at least one connecting device, thus ensuring free movement between the aforementioned components. This guarantees trouble-free mechanical function.

[0018] The at least one connecting device can also be axially backlash-free with the actuating device and / or the sliding device. This reduces noise and mechanical wear.

[0019] It is also possible for several connecting devices to be arranged tangentially and evenly spaced. This allows for better distribution of the acting mechanical forces and prevents jamming within the return mechanism. Furthermore, at least one connecting device can include a connecting unit for rotatably and securely connecting the actuating device and the connecting device, and / or the sliding device and the connecting device.

[0020] The connecting unit can comprise a stepped bolt with a first and second diameter. The first diameter can be larger than the second diameter. The first diameter can also be located within a passage of the actuating device or the sliding device. Furthermore, the second diameter can be located within a passage of the at least one connecting device.

[0021] Furthermore, the stepped bolt can have play at its first diameter or be arranged with a transition or clearance fit within a feedthrough of the actuating device or the at least one sliding device. In this way, mechanical over-constraint within the return mechanism can be compensated for to ensure trouble-free operation of the return mechanism and to reduce friction.

[0022] Furthermore, the stepped bolt, with its second diameter, can be arranged without play within a feedthrough of the at least one connecting device or its energy storage unit. This reduces noise and mechanical wear.

[0023] As an alternative to the stepped bolt, at least one connecting device can be riveted to the actuating device and / or to the sliding device.

[0024] The connecting unit can include a rivet which connects the at least one connecting device or its energy storage device to the actuating device and / or to the sliding device, e.g. rotatably.

[0025] The rivet can also be arranged with play or with a transition or clearance fit within a passage of the actuating device or the at least one sliding device. This compensates for mechanical over-constraint within the return mechanism, ensuring trouble-free operation and reducing friction. Alternatively or additionally, the rivet can be arranged without play within a passage of the at least one connecting device. This reduces noise and mechanical wear.

[0026] Furthermore, the connecting unit can include a sleeve, which may be arranged within a passage of the actuating device and / or within a passage of the at least one sliding device. A rivet of the connecting unit, e.g., with zero play, may be arranged within the sleeve.

[0027] Furthermore, the sleeve can be arranged with play or with a transition or clearance fit within a feedthrough of the actuating device or the at least one sliding device. This allows for the compensation of mechanical over-constraints within the return mechanism, ensuring trouble-free operation and reducing friction.

[0028] Furthermore, it should be noted that the at least one connecting device can be attached to the actuating device or the sliding device without play, and simultaneously with play. Thus, on the one hand, a play-free and on the other hand, a mounting of the at least one connecting device can be achieved.

[0029] Furthermore, the at least one connecting device can be elastically deformable and / or spring-like or energy-storing in the axial direction in order to increase a first axial distance between the actuating device and the sliding device to a second axial distance between the actuating device and the sliding device.

[0030] Furthermore, the at least one connecting device can be elastically deformable and / or spring-like or energy-storing in the axial direction in order to reduce a second axial distance between the actuating device and the sliding device to a first axial distance between the actuating device and the sliding device. Here too, the second axial distance can be greater than the first axial distance.

[0031] Furthermore, balls, which can be arranged in at least one ramp of the displacement device, can be pre-tensioned between the actuating device and the displacement device. Additionally, the at least one connecting device can include an energy storage device. The energy storage device can be designed as a spring beam or a leaf spring. Furthermore, the energy storage device can be designed as a beam and / or beam-shaped and / or as a thin sheet metal and / or as a bending spring. It is also possible for the energy storage device to be Z-shaped.

[0032] The at least one connecting device can also be designed to transmit torque in the tangential direction.

[0033] It should be noted that the terms "axial direction," "radial direction," and "tangential direction" can refer to a rotational axis of the return mechanism. This rotational axis can be understood as the ability of return mechanism components to rotate around and / or move along this axis.

[0034] Furthermore, the at least one connecting device can have two ends, each of which can have a feedthrough in which a connecting unit of the at least one connecting device can be arranged.

[0035] Each penetration can be designed as a through-hole or a through-hole.

[0036] Furthermore, the return device can be set up and designed in such a way that, with the help of the at least one connecting device, the actuating device and the displacement device have a first axial distance to each other in a first state, in which a coupling device can be activated or deactivated.

[0037] Alternatively or additionally, the return device can be set up and designed in such a way that, with the help of the at least one connecting device, the actuating device and the displacement device have a second axial distance to each other in a second state, in which a coupling device can be deactivated or activated.

[0038] In this process, for example in the second state, the second axial distance can be greater than the first axial distance. In this way, a "normally open" or "normally closed" coupling can be realized. The at least one connecting device can be designed and configured to reduce or restore the axial distance from the second state to the first state.

[0039] Furthermore, it may be provided that the actuating device and / or the sliding device has at least one through-hole in which a connecting unit of the connecting device between actuating device and connecting device and / or between sliding device and connecting device can be arranged.

[0040] The at least one penetration can be designed as a through-hole or as a through-hole.

[0041] Furthermore, at least one through-hole can be designed as an elongated hole in the radial and / or tangential direction.

[0042] Alternatively, at least one through-hole can be formed within the actuating device or within the sliding device; e.g., away from an edge of the actuating device or the sliding device.

[0043] Alternatively, the at least one feedthrough can be arranged at the edge of the actuating device or the sliding device in such a way that the edge is at least partially formed by the at least one feedthrough. This allows for the use of limited installation space.

[0044] Furthermore, the fastening device can be in the form of an annular plate and / or a hollow cylindrical shape.

[0045] The fastening device can also have an inner surface or a radially inwardly oriented surface with projections and / or recesses into which geometrically adapted recesses and / or projections of a coupling device housing can engage, so that the fastening device can be arranged rotationally fixed on a coupling device housing.

[0046] Furthermore, the fastening device can have an outer cylindrical surface or a radially outward-oriented surface with a centering section on which the actuating device is arranged and / or centered. This allows the actuating device to be centered on the fastening device. Additionally, the fastening device can have an outer cylindrical surface or a radially outward-oriented surface with an axial stop against which the actuating device rests. This allows the axial position of the actuating device on the fastening device to be defined.

[0047] Furthermore, the fastening device can have at least one end face or at least one axially outwardly oriented surface with at least one ball receptacle in which a ball of the return device is rotatably arranged. The at least one ball receptacle can be at least partially designed as a spherical shell.

[0048] Furthermore, at least one end face or at least one surface oriented axially outwards can be inclined in the direction of the axis of rotation of the return device, so that an axial and radial force can be transmitted to a ball of the return device.

[0049] Furthermore, the actuating device can be in the form of an annular plate and / or a hollow cylinder.

[0050] The actuating device can also be designed and / or arranged to be displaceable and rotatable about an axis of rotation relative to the fastening device.

[0051] Furthermore, the actuating device may be provided with an inner circumferential surface or a radially inwardly oriented surface, by which the actuating device can be arranged on the mounting device and / or centered on the actuating device. In this way, centering of the actuating device on the mounting device is possible.

[0052] The actuating device can also be rotatably arranged and / or centered on the fastening device or rotatably on a centering section of an outer cylindrical surface or a surface of the fastening device oriented radially outwards.

[0053] Furthermore, the actuating device can have at least one end face or at least one axially outwardly oriented surface, with which the actuating device can be arranged on the mounting device or on a stop of an outer cylindrical surface or a radially outwardly oriented surface of the mounting device. Thus, the axial position of the actuating device on the mounting device can be determined.

[0054] Furthermore, the actuating device may have teeth for receiving a rotary motion and / or on an outer cylindrical surface or on a surface oriented radially outwards. An electric drive for a coupling device may be arranged on the teeth.

[0055] Furthermore, it is possible that the displacement device is displaceable along the axis of rotation and, by means of the connecting device, is rotationally fixed to and / or on the actuating device.

[0056] The sliding device can also be slidable along the axis of rotation and rotatable about an axis of rotation relative to the fastening device and / or connected to the actuating device in a rotationally fixed manner.

[0057] The shifting device can be in the form of an annular plate and / or a hollow cylindrical shape.

[0058] Furthermore, the displacement device can have an inner cylindrical surface or a surface oriented radially inwards, with which the displacement device forms a bearing ring of a release bearing of the return device.

[0059] Furthermore, the displacement device can be centered via rolling elements of a release bearing of the return mechanism. Alternatively, the displacement device can center itself on the mounting device via a chamfer on its at least one ramp or ramp guide.

[0060] Furthermore, the sliding device can be arranged to rotate relatively freely relative to the fastening device or to rotate relatively freely on the fastening device via balls of the return device.

[0061] Furthermore, the displacement device can have an inner cylindrical surface or a surface oriented radially inwards, with which the displacement device can form a running surface for rolling elements of a release bearing of the return device.

[0062] Furthermore, the displacement device can have at least one end face or at least one surface oriented axially outwards with at least one ball receptacle in which a ball of the return device can be rotatably arranged.

[0063] Furthermore, at least one ball receptacle can be designed at least partially as a spherical shell.

[0064] The at least one end face or the at least one surface oriented axially outwards can also be inclined away from the axis of rotation of the return device, so that an axial and radial force can be transmitted to a ball of the return device.

[0065] The at least one end face or the at least one axially outwardly oriented surface of the displacement device can have at least one ramp in which a ball of the return device can be arranged in order to change the axial distance between the mounting device and the displacement device according to the ramp profile when the displacement device is rotated relative to the mounting device.

[0066] Furthermore, the return device can have a release bearing for opening and / or closing a clutch device, which can be arranged on a pressure plate of a clutch device.

[0067] The inner or outer ring of the release bearing can be designed and / or configured to bear against a pressure plate of a clutch assembly. Alternatively, a bearing ring, e.g., the outer ring, of the release bearing can be formed by the displacement mechanism.

[0068] It should be noted that the term "backlash-free" can refer to a transition fit with a tight fit (for example, the tolerance fields M, N for the unit shaft or m, n for the unit bore) and / or an interference fit.

[0069] Furthermore, the term "gap fit" can refer to a transition fit with a light fit (for example, the tolerance fields J, JS for the unit shaft or j, k for the unit bore) and / or a clearance fit.

[0070] A second aspect of the present invention comprises a coupling device for a motor vehicle. A motor vehicle can be, for example, a hybrid vehicle or a battery-electric vehicle. It is expressly pointed out that the features of the reverse device, as mentioned under the first aspect, can be applied individually or in combination to the coupling device.

[0071] In other words, the features relating to the return device mentioned above under the first aspect of the invention can also be combined with further features under the second aspect of the invention.

[0072] A coupling device for a motor vehicle includes a return device according to the first aspect. A motor vehicle can be, for example, a hybrid vehicle or a battery-electric vehicle.

[0073] Furthermore, the coupling device can have a housing within which the return device is arranged.

[0074] Furthermore, the coupling device can include a pressure plate for opening and / or closing a coupling. The pressure plate can rest against the return mechanism or against a release bearing of the return mechanism.

[0075] Furthermore, it may be provided that the coupling device includes an electric drive which engages in a toothing of the actuating device to receive a rotary motion in order to transmit a rotary motion to the return device.

[0076] The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawings. These schematically show:

[0077] Fig. 1 shows a spatial sectional view of a retraction device for engaging and / or disengaging a clutch device of a motor vehicle;

[0078] Fig. 2 is a top view of the section from Figure 1;

[0079] Fig. 3 shows a first sectional view of an actuating device, a sliding device and a connecting device of the return device in the direction of the connecting device; Fig. 4 shows a second sectional view of an actuating device, a sliding device and a connecting device of the return device transverse to the connecting device;

[0080] Fig. 5 shows a sectional view of a sliding device of the

[0081] Return device with a connecting unit according to a first embodiment;

[0082] Fig. 6 shows a sectional view of a sliding device of the

[0083] Return device with a connecting unit according to a second embodiment; and

[0084] Figs. 7a) to 7c) show possible locations for a feedthrough in an actuating device or in a sliding device of the return mechanism.

[0085] In the following description, the same reference symbols are used for the same objects.

[0086] Figure 1 shows a three-dimensional sectional view of a return device 1 for engaging and / or disengaging a clutch device of a motor vehicle. Figure 2 further shows a top view of the section from Figure 1.

[0087] In addition, Figures 3 and 4 show a first and second sectional view of an actuating device 3, a sliding device 4 and a connecting device 6 of the return device 1 in the direction of the connecting device 6 (Figure 3) and transversely to the connecting device 6 (Figure 4).

[0088] For the sake of simplicity, figures 1 to 4 are described together below.

[0089] Figures 1 to 4 show a return device 1 for engaging and / or disengaging a clutch device of a motor vehicle.

[0090] The return device 1 comprises a fastening device 2 for rotationally fixed attachment of the return device 1 to a housing (not shown) of a coupling device and for holding and / or supporting further components of the return device 1. Furthermore, the return device 1 has an actuating device 3 for initiating an axial displacement of a release bearing 5 of the return device 1, wherein the actuating device 3 is rotatably arranged on the fastening device 2.

[0091] Furthermore, the return device 1 has a displacement device 4 for axially displacing a release bearing 5 of the return device 1, wherein the displacement device 4 is rotatably arranged on the fastening device 2 and is relatively displaceable relative to the fastening device 2 and to the actuating device 3.

[0092] According to Figures 1 to 4, the fastening device 2 is arranged between the actuating device 3 and the sliding device 4.

[0093] Furthermore, it can be seen from Figures 1 to 4 that the fastening device 2 and the sliding device 4 are arranged and designed in such a way that a rotation of the sliding device 4 relative to the fastening device 2 causes a change in the axial distance in axial direction A from the sliding device 4 to the fastening device 2.

[0094] Specifically, the displacement device 4 has several ramps (not shown), in each of which a ball 11 of the return device 1 is arranged in order to change the axial distance between the mounting device 2 and the displacement device 4 according to the ramp profile when the displacement device 4 is rotated relative to the mounting device 2.

[0095] Opposite the ramps, the fastening device 2 on one of its two end faces comprises several ball receptacles 2A, in each of which a ball 11 of the return device 1 is rotatably arranged. Each ball receptacle 2A is at least partially designed as a spherical shell. Thus, the positions of the balls 11 relative to the fastening device 2 are fixed, whereas the positions of the balls 11 relative to the displacement device 4 are variable due to the ramps.

[0096] Using the ramps mentioned above, a rotational movement of the actuating device 3 can be converted into a translational movement of the displacing device 4.

[0097] Furthermore, the return device 1 comprises several connecting devices 6, which are arranged between the actuating device 3 and the sliding device 4 and which transmit a rotary movement of the actuating device 3 to the sliding device 4. Both clockwise and counterclockwise rotary movements can be transmitted. The connecting devices 6 are arranged in a tangentially distributed manner in the direction T.

[0098] The return device 1 is set up and designed in such a way that, by means of the connecting devices 6, the actuating device 3 and the displacement device 4 have a first axial distance to each other in a first state, in which a coupling device (not shown) can be deactivated.

[0099] In addition, the return device 1 is set up and designed in such a way that the actuating device 3 and the displacement device 4 have a second axial distance to each other in a second state, in which a coupling device can be activated.

[0100] In the second state, the second axial distance is greater than the first axial distance. Therefore, the connecting devices 6 are designed and configured to reduce the axial distance from the second state back to the first state. Figures 1 to 4 show only the first state.

[0101] Furthermore, it should be noted that each connecting device 6 is elastically deformable in axial direction A and resilient or energy-storing in order to be able to increase the first axial distance between actuating device 3 and sliding device 4 to the second axial distance between actuating device 3 and sliding device 4.

[0102] In addition, each connecting device 6 is elastically deformable in axial direction A and designed to be resilient or energy-storing in order to reduce the second axial distance between actuating device 3 and sliding device 4 to the first axial distance between actuating device 3 and sliding device 4.

[0103] More precisely, each connecting device 6 has an energy storage element 7, which is designed as a spring beam or a leaf spring (see Figures 1 and 4). Furthermore, the energy storage element 7 is Z-shaped (see Figure 4). In addition, each connecting device 6 is designed to transmit torque in the tangential direction T.

[0104] As shown in Figures 1 to 4, each connecting device 6 is rotatably arranged and axially fixed against displacement A on the actuating device 3 and on the displacement device 4. In other words, each connecting device 6 is connected to the actuating device 3 and to the displacement device 4 without play in the axial direction A.

[0105] Furthermore, each connecting device 6 is connected with the actuating device 3 and with the displacement device 4 with play in the radial direction R and in the tangential direction T.

[0106] As can be seen in Figure 1, each connecting device 6 has two ends, each of which has a through-hole 6A in which a connecting unit 8 of the connecting device 6 is arranged. Each through-hole 6A is designed as a through-bore or through-hole.

[0107] Furthermore, each connecting device 6 includes a connecting unit 8 for rotatably and securely connecting the actuating device 3 and the connecting device 6, and the sliding device 4 and the connecting device 6.

[0108] Figure 5 shows a sectional view of a displacement device 4 of the return device 1 with a connecting unit 8, 9 according to a first embodiment.

[0109] Here, the connecting device 6 shown as an example is riveted to the sliding device 4. Although not shown, the same applies to the actuating device 3 instead of the sliding device 4.

[0110] In other words, the connecting unit 8, 9 of the connecting device 6 has a rivet 8 which rotatably connects the connecting device 6 or its energy storage device 7 to the sliding device 4. The rivet 8 is arranged with clearance or with a transition or clearance fit within a passage 4A of the sliding device 4, while the rivet 10 is arranged without clearance within the passage 6A of the connecting device 6. Although not shown, the same applies to the actuating device 3 instead of the sliding device 4.

[0111] Furthermore, the connecting unit 8, 9 of the connecting device 6 has a sleeve 9 which is arranged within a passage 4A of the sliding device 4. The rivet 8 is arranged without play within the sleeve 9.

[0112] The sleeve 9 is arranged with play or with a transition or clearance fit within a passage 4A of the displacement device 4. The above descriptions relate by way of example only to a connecting unit 8, 9 with a rivet 8 and a sleeve 9. The return device 1, however, comprises several connecting units 8, 9.

[0113] Figure 6 shows a sectional view of a sliding device 4 of the return device 1 with a connecting unit 10 according to a second embodiment. This embodiment is also shown in Figures 1 and 2.

[0114] Figures 1, 2 and 6 show that the connecting unit 10 comprises a stepped bolt 10 with a first and second diameter D1, D2. The first diameter D1 is larger than the second diameter D2.

[0115] Furthermore, the first diameter D1 is arranged within a passage 4A of the displacement device 4. The same applies to the actuating device 3 instead of the displacement device 4. The second diameter D2, however, is arranged within a passage 6A of the connecting device 6.

[0116] The stepped bolt 10 with its first diameter D1 is arranged with play or with a transition or clearance fit within the passage 4A of the displacement device 4, wherein the stepped bolt 10 with its second diameter D2 is arranged without play within the passage 6A of the energy storage device 7 of the connecting device 6.

[0117] The above descriptions refer, by way of example, to only one connecting unit 10 with a stepped bolt 10. However, the return device 1 comprises several connecting units 10.

[0118] According to Figures 1 to 4, the actuating device 3 and also the sliding device 4 have several through-holes 3A, 4A in which - as already indicated - a connecting unit 8 of the connecting device 6 is arranged between actuating device 3 and connecting device 6 or between sliding device 4 and connecting device 6.

[0119] Each passage 3A, 4A is designed as a through-hole or through-bore within the actuating device 3 or within the displacement device 4.

[0120] Against this background, it is conceivable that, according to Figures 7a) to 7c), which show possible locations for a through-hole 3A, 4A in the actuating device 3 or in the displacement device 4 of the return device 1, one or each through-hole 3A, 4A is designed as an elongated hole in radial direction R (see Figure 7c).

[0121] Alternatively, according to Figure 7b), it is possible that one or each passage 3A, 4A is arranged at the edge of the actuating device 3 or the sliding device 4 in such a way that the edge is at least partially formed by the passage 3A, 4A.

[0122] Figure 7a) shows another alternative, which can be found in Figures 1 to 4 and in which one or each passage 3A, 4A is formed within the actuating device 3 or within the sliding device 4.

[0123] Regarding Figures 1 to 4, it should also be noted that the fastening device 2 is designed in the form of an annular plate.

[0124] The fastening device 2 has an inner surface with projections and recesses 12, into which geometrically adapted projections and recesses of a housing of a coupling device (not shown) can engage, so that the fastening device 2 can be arranged rotationally fixed on a housing of a coupling device.

[0125] Furthermore, as shown in Figures 1 to 4, the fastening device 2 has an outer cylindrical surface with a centering section 2B on which the actuating device 3 is arranged and centered. The outer cylindrical surface also has a stop 2C in the axial direction A against which the actuating device 3 rests.

[0126] Furthermore, the fastening device 2 has an end face with several ball receptacles 2A, in each of which a ball 11 of the return device 1 is rotatably arranged. Each ball receptacle 2A is at least partially designed as a spherical shell.

[0127] Furthermore, as shown in Figures 1 and 2, the end face or the surface oriented outwards in the axial direction A is inclined in the direction of the axis of rotation D of the return device 1, so that an axial and radial force can be transmitted to a ball 11 of the return device 1. Figures 1 and 2 also show that the actuating device 3 is designed in the form of an annular plate and is arranged so as to be displaceable and rotatable about an axis of rotation D relative to the mounting device 2.

[0128] The actuating device 3 has an inner lateral surface with which the actuating device 3 is arranged on the fastening device 2 or is centered on the actuating device 3.

[0129] Furthermore, Figures 1 and 2 show that the actuating device 3 is rotatably arranged and centered on the fastening device 2 or rotatably on a centering section 2B of the outer lateral surface of the fastening device 2.

[0130] As shown in Figures 1 and 2, the actuating device 3 also has an end face with which the actuating device 3 is arranged on the fastening device 2 or on a stop 2C of the outer surface of the fastening device 2.

[0131] Furthermore, Figure 1 shows that the actuating device 3 has a toothing 3B for receiving a rotary motion on the outer lateral surface.

[0132] Furthermore, Figures 1 and 2 show that the sliding device 4 is slidably arranged along the axis of rotation D and is fixedly connected to the actuating device 3 by means of the connecting device 6. Thus, the sliding device 4 is slidably arranged along the axis of rotation D and rotatably connected to the actuating device 3 about the axis of rotation D and fixedly connected to the actuating device 3.

[0133] The displacement device 4 is designed in the form of an annular plate and has an inner cylindrical surface with which the displacement device 4 forms a bearing ring of a release bearing 5 of the return device 1.

[0134] The displacement device 4 is centered via rolling elements 5B of a release bearing 5 of the return device 1.

[0135] The sliding device 4 is also rotatably arranged relative to the fastening device 2, or, via balls 11 of the return device 1, is rotatably arranged on the fastening device 2. Furthermore, Figures 1 and 2 show that the sliding device 4 has an inner cylindrical surface with which the sliding device 4 forms a running surface for rolling elements 5B of a release bearing 5 of the return device 1.

[0136] Furthermore, the displacement device 4 has an end face with several ball receptacles 4B, in each of which a ball 11 of the return device 1 is rotatably arranged. Each ball receptacle 4B is at least partially designed as a spherical shell.

[0137] Furthermore, it can be seen from Figures 1 and 2 that an end face is inclined away from the axis of rotation D of the return device 1, so that an axial and radial force can be transmitted to a ball 11 of the return device 1.

[0138] Furthermore, this end face of the displacement device 4 has several ramps (not shown), in each of which a ball 11 of the return device 1 is arranged in order to change the axial distance between the mounting device 2 and the displacement device 4 according to the ramp profile when the displacement device 4 is rotated relative to the mounting device 2.

[0139] Furthermore, Figures 1 and 2 show that the return device 1 has a release bearing 5 for opening and / or closing a coupling device, which can be arranged on a pressure plate of a coupling device.

[0140] The inner ring 5A of the release bearing 5 is designed and configured to bear against a pressure plate of a clutch device, with the outer ring of the release bearing 5 being formed by the displacement device 4.

[0141] List of reference signs

[0142] 1 Rear mounting device

[0143] 2A Ball joint

[0144] 2B hundredweight section

[0145] 2C stop

[0146] 3 Actuating device

[0147] 3A Implementation

[0148] 3B gearing

[0149] 4. Shifting device

[0150] 4A Implementation

[0151] 4B ball mount

[0152] 5 Release bearings

[0153] 5A inner ring

[0154] 5B Rolling elements

[0155] 6 Connection device

[0156] 6A Implementation

[0157] 7 Energy storage

[0158] 8 Connecting unit - rivet

[0159] 9 Connection unit - sleeve

[0160] 10 Connecting unit - stepped bolt

[0161] 11 balls

[0162] 12 forward and backward leaps

[0163] A axial direction

[0164] R radial direction

[0165] T tangential direction

[0166] D1 first diameter

[0167] D2 second diameter

[0168] D axis of rotation

Claims

Patent claims 1. Return device (1) comprising for engaging and / or disengaging a clutch device of a motor vehicle: - a fastening device (2) for rotationally fixed fastening of the return device (1) to a housing of a coupling device and for holding and / or supporting further components of the return device (1), - an actuating device (3) for initiating an axial displacement of a release bearing (5) of the return device (1 ), - a displacement device (4) for axially displacing a release bearing (5) of the return device (1 ), - wherein the fastening device (2) and the sliding device (4) are arranged and designed such that a rotation of the sliding device (4) relative to the fastening device (2) causes a change in the axial distance (A) of the sliding device (4) to the fastening device (2), - at least one connecting device (6) arranged between the actuating device (3) and the sliding device (4) and which transmits a rotary movement of the actuating device (3) to the sliding device (4), and - wherein the at least one connecting device (6) is connected with play to the actuating device (3) and / or to the sliding device (4).

2. Return device according to claim 1 , - wherein the at least one connecting device (6) is connected with play to the actuating device (3) and / or to the displacement device (4) in the radial direction (R) and / or in the tangential direction (T), and / or - wherein the at least one connecting device (6) is connected without play to the actuating device (3) and / or to the displacing device (4) in the axial direction (A).

3. Return device according to claim 1 or 2, - wherein the at least one connecting device (6) has a connecting unit (8, 9, 10) for rotatably and securely connecting the actuating device (3) and the connecting device (6) and / or the sliding device (4) and the connecting device (6), - wherein the connecting unit (10) comprises a stepped bolt (10) with a first and second diameter (D1 , D2), - wherein the stepped bolt (10) is arranged with its first diameter (D1) having clearance or with a transition or clearance fit within a passage (3A, 4A) of the actuating device (3) or the at least one sliding device (4), and / or - wherein the stepped bolt (10) with its second diameter (D2) is arranged without play within a passage (6A) of the at least one connecting device (6) or its energy storage device (7).

4. Return device according to one of the preceding claims, - wherein the at least one connecting device (6) has a connecting unit (8, 9, 10) for rotatably and securely connecting the actuating device (3) and the connecting device (6) and / or the sliding device (4) and the connecting device (6), - wherein the connecting unit (8, 9) comprises a rivet (8) which connects the at least one connecting device (6) or its energy storage device (7) to the actuating device (3) and / or to the sliding device (4), - wherein the rivet (8) is arranged with play or with a transition or clearance fit within a passage (3A, 4A) of the actuating device (3) or of the at least one sliding device (4), and / or - wherein the rivet (10) is arranged without play within a passage (6A) of the at least one connecting device (6).

5. Return device according to one of the preceding claims, - wherein the at least one connecting device (6) has a connecting unit (8, 9, 10) for rotatably and securely connecting the actuating device (3) and the connecting device (6) and / or the sliding device (4) and the connecting device (6), - wherein the connecting unit (8, 9) comprises a sleeve (9) which is arranged within a passage (3A) of the actuating device (3) and / or within a passage (4A) of the at least one displacement device (4), and - wherein the sleeve (9) is arranged with clearance or with a transition or clearance fit within a passage (3A, 4A) of the actuating device (3) or of the at least one sliding device (4).

6. Return device according to one of the preceding claims, - wherein the at least one connecting device (6) is elastically deformable and / or spring-like or energy-storing in the axial direction in order to be able to increase a first axial distance between actuating device (3) and displacement device (4) to a second axial distance between actuating device (3) and displacement device (4), - wherein the at least one connecting device (6) is elastically deformable and / or spring-like or energy-storing in the axial direction in order to reduce a second axial distance between actuating device (3) and displacement device (4) to a first axial distance between actuating device (3) and displacement device (4), and - where the second axial distance is greater than the first axial distance.

7. Return device according to one of the preceding claims, - wherein the at least one connecting device (6) comprises an energy storage device (7), and / or - wherein the at least one connecting device (6) is designed to transmit torque in the tangential direction (T).

8. Return device according to one of the preceding claims, - wherein the at least one connecting device (6) has two ends, each of which has a feedthrough (6A) in which a connecting unit (8, 9, 10) of the at least one connecting device (6) can be arranged.

9. Return device according to one of the preceding claims, - wherein the actuating device (3) and / or the sliding device (4) has at least one through-hole (3A, 4A) in which a connecting unit (8, 9, 10) of the connecting device (6) can be arranged between actuating device (3) and connecting device (6) and / or between sliding device (4) and connecting device (6), - wherein at least one through-hole (3A, 4A) is designed as an elongated hole in the radial (R) and / or tangential direction (T), or - wherein at least one through-passage (3A, 4A) is formed within the actuating device (3) or within the sliding device (4), or - wherein the at least one through-hole (3A, 4A) is arranged at the edge of the actuating device (3) or the sliding device (4) such that the edge is at least partially formed by the at least one through-hole (3A, 4A).

10. Having a coupling device for a motor vehicle: - a return device (1) according to one of the preceding claims, - a housing within which the return device (1) is arranged, and - a pressure plate for opening and / or closing a coupling, - wherein the pressure plate is attached to the return device (1) or to a release bearing (5) the return device (1) is attached.

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