阅读说明：本技术 离合器机构 (Clutch mechanism ) 是由 T·鲍尔 于 2019-09-23 设计创作，主要内容包括：本发明涉及一种离合器机构(1),设有离合器壳体(2),该离合器壳体将例如包括内燃机的驱动单元(21)与诸如变速器(10)的从动装置(8)连接,离合器壳体能够围绕中央轴线(2)旋转,并且离合器壳体在其朝向驱动单元(21)的一侧在离合器壳体的旋转中心的径向延伸区域中指配有轴向的中央突起(25),该中央突起用于接纳容纳电动机器(42)的转子(41)的转子架(40)。中央突起(25)藉由第一连接装置(26)与驱动单元(21)并且藉由第二连接装置(38)与转子架(40)至少防旋转地连接。(The invention relates to a clutch mechanism (1) provided with a clutch housing (2) which connects a drive unit (21), for example comprising an internal combustion engine, with a driven device (8), such as a transmission (10), which is rotatable about a central axis (2), and which is assigned, on its side facing the drive unit (21), in the radially extending region of its center of rotation, an axial central projection (25) for receiving a rotor carrier (40) which accommodates a rotor (41) of an electric machine (42). The central projection (25) is connected at least in a rotationally fixed manner to the drive unit (21) by means of a first connecting device (26) and to the rotor frame (40) by means of a second connecting device (38).)

1. A clutch mechanism (1) with a clutch housing (2) which connects a drive unit (21), for example comprising an internal combustion engine, with a driven device (8), for example a transmission (10), which is rotatable about a central axis (3) and which is assigned, on its side facing the drive unit (21), in a radially extending region of its center of rotation, an axial central projection (25) for receiving a rotor carrier (40) which accommodates a rotor (41) of an electric machine (42), characterized in that the central projection (25) is connected at least in a rotationally fixed manner by first connecting means (26) with the drive unit (21) and by second connecting means (38; 38a) with the rotor carrier (40).

2. Clutch mechanism (1) according to claim 1, characterized in that the central protrusion (25) is firmly connected with the clutch housing (2) by fastening means (49).

3. Clutch mechanism (1) according to claim 1 or 2, characterized in that at least one connection device (26; 38; 38a) and/or the fastening device (49) has a preferably releasable connection element (31, 32; 43; 43 a; 46).

4. Clutch mechanism (1) according to claim 1, characterized in that the first connecting means (26) arranged between the drive unit (21) and the central protrusion (25) are designed to be releasable.

5. Clutch mechanism (1) according to claim 4, wherein the first connection means (26) arranged between the drive unit (21) and the central protrusion (25) are provided with radial teeth (34, 35) on the central protrusion (25) and on a torsional vibration damper (29).

6. Clutch mechanism (1) according to claim 1, characterized in that the central protrusion (25) has a radially outwardly engaging fastening flange (48) for connecting the central protrusion (25) to the clutch housing (2) by means of a connecting element (51) of the fastening means (49).

7. Clutch mechanism (1) according to claim 6, characterized in that the central protrusion (25) is provided with carrier means (51) for the rotor carrier (40) on the side of the fastening flange (48) facing away from the clutch housing (2), the carrier means having: at least one support (52) for the rotor frame (40); and at least one receptacle (55) for at least one preferably releasable connecting element (46) of the fastening device (49).

8. A clutch mechanism (1) according to claim 1, which is arranged in a transmission housing (11) with a cover (63), characterized in that the central protrusion (25) is centered relative to the cover (63) by means of a bearing arrangement (65).

9. Clutch mechanism (1) according to claim 1 or 8, wherein the central protrusion (25) is sealed with respect to the cover (63) by means of a sealing device (66).

10. Clutch mechanism (1) according to claim 1, characterized in that the clutch housing (2) and/or the drive unit (21) comprises a damper system (20).

11. A clutch mechanism (1) according to claim 1, characterized in that the drive unit (21) comprises a torsional vibration damper (29).

12. Clutch mechanism (1) according to claim 6, characterized in that the radially outwardly engaging fastening flange (48) of the central protrusion (25) axially accommodates the rotor carrier (40) between itself and the clutch housing (2).

13. Clutch mechanism (1) according to claim 6, wherein the radially outwardly engaging fastening flange (48) of the central protrusion (25) accommodates the rotor carrier (40) at its side facing away from the clutch housing (2).

14. Clutch mechanism (1) according to claim 6, characterized in that in a circumferential region of the central projection (25) in which a radially outwardly engaging fastening flange (48) is engaged on the clutch housing (2) by means of the connecting element (46) of the fastening device (49), the fastening flange projects radially further outwards in a manner surrounding the connecting element (46) than in a circumferential region between every two connecting elements (46).

15. Clutch mechanism (1) according to claim 14, characterized in that the radially outwardly engaging fastening flange (48) of the central projection (25) has an at least substantially wave-shaped outer contour (68) in its radial circumferential region.

16. Clutch mechanism (1) according to claim 7, characterized in that the carrier means (51) for the rotor carrier (40) are in the form of struts (53) which are provided on the side of the radially outwardly engaging fastening flange (48) of the central projection (25) facing away from the clutch housing (2) and which extend at least substantially radially outwards from the hub (54) of the central projection (25), respectively.

17. Clutch mechanism (1) according to claim 16, wherein the struts (53) each open with their radially inner end into a hub (54) of the central projection (25) and each enclose with their radially outer end at least one receptacle (55) for at least one preferably releasable connecting element (43; 43a) of the second connecting means (38, 38 a).

18. Clutch mechanism (1) according to claim 1, characterized in that the rotor carrier (40) has a plurality of recesses (60, 61) in the circumferential direction at least on its side facing away from the clutch housing (2).

19. Clutch mechanism (1) according to claim 18, characterized in that the rotor carriers (40) are each designed with a recess (60) in the circumferential region of the respective connecting element (51) of the fastening device (49), however radially outside the connecting element.

20. Clutch mechanism (1) according to claim 18, characterized in that the rotor carriers (40) are each designed with a recess (61) in a circumferential region, however radially, within the respective connecting element (51) of the fastening means (49), respectively.

Technical Field

The present invention relates to a clutch mechanism having a clutch housing which connects a drive unit, for example comprising an internal combustion engine, with a driven device, such as a transmission, which clutch housing is rotatable about a central axis and which, on its side facing the drive unit, is assigned an axial central projection in the radial extension of the center of rotation of the clutch housing, which central projection serves to receive a rotor carrier which accommodates a rotor of an electric machine.

Background

Such a clutch mechanism is known from DE 102016014725 a 1. The rotor carrier of the electric machine and thus the rotor are accommodated on a clutch mechanism designed as a hydrodynamic torque converter by means of fastening elements which are part of a releasable connecting unit of the fastening device. A compact axial design of the clutch mechanism is achieved in particular if the rotor extends from the rotor carrier in the direction of the clutch housing and thus at least partially overlaps this clutch housing in the axial direction. However, it is perceived as disadvantageous that the rotor carrier covers the clutch housing almost completely on its side facing the drive, and thus the clutch housing loses the possibility of being directly connected to the drive in a simple manner.

Disclosure of Invention

The object on which the invention is based is to design a clutch mechanism such that it can be connected directly to the drive in a simple manner while being compact in axial design.

To achieve the purpose, the following steps are provided: a clutch mechanism is provided with a clutch housing which connects a drive unit, for example, assigned to an internal combustion engine, with a driven device, such as a transmission, which can rotate about a central axis and which has, on its side facing the drive, in the radially extending region of its center of rotation, an axial central projection for receiving a rotor carrier which accommodates a rotor of an electric machine.

Of particular interest are: the central projection is connected at least in a rotationally fixed manner by first connecting means with a drive unit assigned to the drive and by second connecting means with the rotor frame.

By accordingly establishing an at least anti-rotational connection between the central projection and the drive unit on the one hand and the rotor frame on the other hand, it is possible to transmit the movement of the drive unit (which may comprise, for example, a torsional vibration damper and/or a vibration damper system) to the central projection by means of the first connecting means and from this central projection to the rotor frame by means of the second connecting means in a spatially very compact construction. If the assignment of the central projection to the clutch housing is effected in a rotationally fixed manner by means of the fastening device, it is possible to connect the two machines (in particular the internal combustion engine on the one hand by means of the drive unit and the electric machine on the other hand by means of the rotor carrier) to the clutch housing in a rotationally fixed manner over a very small installation space.

If at least one of the connecting devices, like the fastening device, has a preferably releasable connecting element and the connecting device arranged between the drive unit and the central projection is designed to be releasable, each of the at least anti-rotational connections established by means of these connecting devices and the fastening device can be released again at any time, if appropriate, without damage or even destruction of the clutch mechanism.

In an advantageous embodiment, the connecting device arranged between the drive unit and the central projection can be provided with a toothing, in particular a radial toothing, on the central projection and on the torsional vibration damper, which radial toothings, which act as a plug connection, are brought into operative connection with one another by a predetermined relative movement of the drive unit and the central projection with respect to one another. In the case of the aforementioned radial toothing, it is sufficient to displace the drive unit and the central projection relative to one another in the axial direction, for example by plugging a component of the drive unit onto the central projection.

In order to fasten the central projection smoothly on the clutch housing, the central projection has a radially outwardly engaging fastening flange which is fastened on the clutch housing by means of a preferably releasable connecting element of the fastening device. The central projection is provided with a carrier device for the rotor carrier on the side of the fastening flange facing away from the clutch housing, the carrier device having: at least one support part for the rotor frame; and at least one receptacle for at least one preferably releasable connecting element of the second fastening device.

Thus, in the case of a radially outwardly engaging fastening flange of the central projection, this fastening flange can axially accommodate the rotor carrier between itself and the clutch housing, or can accommodate the rotor carrier on its side facing away from the clutch housing. In the first-mentioned case, a very compact construction in the axial direction is obtained, while in the other case a more smooth assembly is achieved. Particularly advantageous here are: in a circumferential region of the central projecting radially outwardly engaging fastening flange which is engaged on the clutch housing by means of the connecting elements of the fastening device, the fastening flange projects radially further outwardly in a manner surrounding the connecting elements than in a circumferential region between every two connecting elements. In the ideal case, the radially outwardly engaging fastening flange for the central projection therefore has an at least substantially corrugated outer contour in its radial circumferential region, which contributes to the axially elastic properties of the fastening flange, which in turn allows the clutch housing to be decoupled from the vibrations generated by the drive in the axial direction.

Advantageously, the central projection is provided with a carrier device for the rotor carrier on the side of the fastening flange facing away from the clutch housing, the carrier device having: at least one support part for the rotor frame; and at least one receptacle for at least one connecting element of the second fastening device. Particularly preferably, the carrier means for the rotor frame are in the form of struts which are arranged on the side of the radially outwardly engaging fastening flange of the central projection facing away from the clutch housing and which, starting from the hub of the central projection, each extend at least substantially radially outwards. In this case, the struts each open with their radially inner end into the hub of the central projection and each enclose with their radially outer end at least one receptacle for at least one connecting element of the second fastening device.

It can be provided for the rotor carrier to have a plurality of recesses in the circumferential direction at least on its side facing away from the clutch housing. Thereby, different advantages can be obtained, such as the transmission of the rotational movement, the cooling air supply and/or the weight reduction due to saving material.

In particular, the clutch mechanism is preferably arranged in an accommodating space of the transmission housing, which is separated from a further space of the transmission by a cover. The central projection of the clutch mechanism can be centered relative to this cover by means of a bearing arrangement, so that the clutch mechanism can be rotated within the transmission about its longitudinal axis, wherein the central axis of the clutch mechanism preferably coincides with the longitudinal axis of the transmission housing. Additionally, the central protrusion may be sealed relative to the cover by means of a sealing means. Due to this sealing, the clutch mechanism is located, depending on the respective filling degree of the transmission housing, in a moist space in which a fluid mist is preferably contained or in a moist space which can be completely filled with fluid. In contrast to this, the drive unit may be arranged outside the receiving space defined by the covering and thus within the previously mentioned further space. As long as this further space is not wetted by the fluid mist or filled with fluid, this further space is implemented as a dry space.

The drive unit may comprise a torsional vibration damper and/or a shock absorber system. Alternatively or additionally, the clutch housing may also comprise a torsional vibration damper and/or a vibration damper system. In the first-mentioned case, the torsional vibration damper and/or the vibration damper system may be contained in a dry space, and in another case may be contained in a wet space or a wet space.

Drawings

Embodiments are shown in the drawings. In the drawings:

fig. 1 shows a clutch mechanism with a clutch housing which connects a drive unit with a driven device, which clutch housing is assigned, on its side facing the drive unit, in the radial extension of its center of rotation, an axial central projection for receiving a rotor carrier which accommodates a rotor of an electric machine;

FIG. 2 shows the clutch housing and axial central projection from the direction of view of arrow P1 in FIG. 1;

fig. 3 shows a representation of the axial central projection of fig. 1, wherein a rotor carrier for a rotor of the electric machine is arranged on the side of the central projection facing away from the clutch housing;

FIG. 4 is as in FIG. 3, however with a rotor carrier for a rotor of an electric machine disposed axially between the central projection and the clutch housing;

fig. 5 shows the axial center projection of fig. 4 and the rotor frame for the rotor of the electric machine from the viewing direction of an arrow P2 in fig. 4.

Detailed Description

In the drive train illustrated in fig. 1, the clutch mechanism 1 is designed as a torque converter. The clutch mechanism 1 has a clutch housing 2 which can be moved in rotation about a central axis 3. The clutch housing 2 functions as a pump impeller 4 by receiving pump impeller blades, which co-operate with a turbine wheel 5, which is connected in a rotationally fixed manner to a driven device 8 formed by a transmission input shaft 9 of a transmission 10. Between the pump impeller 4 and the turbine wheel 5 in the axial direction, the stator wheel 6 is positioned on a freewheel 7 which is received at least in the rotational direction on a support shaft 15 surrounding a transmission input shaft 9 of the transmission 10. A hydraulic circuit 12 is formed by the pump impeller 4, the turbine wheel 5 and the stator 6, which hydraulic circuit can be bridged by a clutch device 13 in such a way that the movement of the clutch housing 2 is guided to the output 8 bypassing the hydraulic circuit 12. For this purpose, the clutch device 13 must be engaged, for which purpose a piston 14, which is arranged axially displaceably on a clutch housing hub 16, is moved in the following direction: in which direction it brings about an operative connection of the drive-side clutch element 17, which is rotationally fixed to the clutch housing 2, and the driven-side clutch element 18 to one another; the clutch element on the output side is rotationally fixed to the turbine 5 and thus to the output 8. For disengagement, the piston 14 is displaced in axially opposite direction and thereby releases the operative connection between the clutch element 17 and the clutch element 18. Finally, the clutch housing 2 accommodated in the transmission housing 11 of the transmission 10 accommodates a damper system 20, by means of which excitation from the drive unit 21 with the torsional vibration damper 29 can be eliminated.

An axial central projection 25, which projects in the direction of the drive unit 21 and symmetrically surrounds the central axis 3, is provided on the side of the clutch housing 2 facing the drive unit 21. The central projection 25 is connected to the output flange 28 of the torsional vibration damper 29 of the drive unit 21 by means of a first connecting device 26, wherein the first connecting device 26 has radial tooth sections 34, 35, of which one radial tooth section 34 is arranged on a radially inner side of a flange foot 36 of the output flange 28 of the torsional vibration damper 29 and the other radial tooth section 35 is arranged on a radially outer side of the central projection 25. The two radial teeth 34 and 35 can be brought into operative connection with each other or can be released by axial displacement of the driven flange 28 and the central projection 25 of the torsional vibration damper 29. The radial teeth 34 and 35 thus form the releasable connecting elements 31 and 32 of the first connecting device 26.

The central projection 25 is connected in a rotationally fixed manner to a rotor carrier 40 of a rotor 41 of an electric machine 42 by means of a second connecting device 38. To form the connecting means 38, releasable connecting elements 43 in the form of screws 37 are provided, which extend from one side of the drive unit 21 through recesses 44 in the rotor frame 40 and are screwed into threaded recesses 45, which are provided in receptacles 55 of the support 52 of the carrier means 51 for the rotor frame 40, as can be seen from fig. 2. Carrier means 51 for the rotor frame 40 are provided at the radially outwardly engaging fastening flange 48 of the side of the central projection 25 facing away from the clutch housing 2 and accommodate supports 52 for the rotor frame 40 at a uniform angular spacing from one another. The supports 52 each extend at least substantially radially outwards from a hub 54 of the central projection 25 and each form with their radially outer end a receptacle 55 for at least one preferably releasable connecting element 43 (in the form of a screw 37) of the second connecting means 38. Each support 52 has, in the radial region between the hub 54 and the receptacle 55 of the central projection 25, a centering edge 56 for the rotor frame 40, on which the rotor frame 40 can be radially supported.

As fig. 2 shows, the radially outwardly engaging fastening flange 48 of the central projection 25 is firmly connected to the clutch housing 2 by means of a fastening device 49 by means of a connecting element 46 in the form of a rivet 50. In the circumferential region of the central projection 25, in which the fastening flange 48 of the fastening device 49 engages with the connecting elements 46 on the clutch housing 2, the fastening flange projects radially further outward in such a way as to surround the connecting elements 46 than in the circumferential region between every two connecting elements 46. The fastening flange 48 of the central projection 25 thus has an at least substantially corrugated outer contour 68 in its radial circumferential region.

In the embodiment illustrated in fig. 1, the rotor carrier 40 is axially accommodated on the side of the radially outwardly engaging fastening flange 48 of the central projection 25 facing away from the clutch housing 2 and is axially fastened on the fastening flange 48 of the central projection 25 by the connecting element 43 of the second connecting means 38 after being radially supported on the centering edge 56 of the support 52. Such an embodiment is also shown in fig. 3.

The embodiment shown in fig. 4, in which the rotor carrier 40 is accommodated axially between the radially outwardly engaging fastening flange 48 of the central projection 25 and the clutch housing 2, can be designed more compactly in the axial direction. In this embodiment, the second connecting means 38a are provided with connecting elements 43a in the form of rivets 37a which extend through both the recesses 44 in the rotor frame 40 and the recesses 58 in the fastening flange 48 of the central projection 25. As can be seen in fig. 5, in this embodiment the fastening flange 48 of the central protrusion 25 is designed without a support for the carrier means of the rotor frame 40. The rivets 37a of the second connecting means 38a therefore not only assume the axial connection of the rotor frame 40 to the fastening flange 48 of the central projection 25, but also the centering.

As can further be seen in fig. 5, the rotor carrier 40 has a plurality of recesses 60, 61 in the circumferential direction on its side facing away from the clutch housing 2. Thereby, different advantages can be obtained, such as the transmission of the rotational movement, the cooling air supply and/or the weight reduction due to saving material. In the case of the recesses 60, these can be formed in the circumferential region of the respective connecting element 51 of the fastening device 49, however, radially outside the connecting element, while in the case of the recesses 61, these are radially inside the connecting element.

As shown in fig. 1, the clutch mechanism 1 is arranged in a clutch space 62 of the transmission housing 11 of the transmission 10, which is separated from a damper space 64 accommodating the torsional damper 29 by a cover 63 of the transmission housing 11. The cover 63 accommodates at its radially inner end a bearing 65 and a sealing device 66. The bearing 65 serves to center the central protrusion 25 of the clutch mechanism 1, while the sealing device 66 seals the clutch space 62 with respect to the damper space 64. Thus, the clutch space 62 may for example contain fluid or only fluid mist, while the damper space 64 is dry.

List of reference numerals

1 Clutch mechanism

2 Clutch housing

3 central axis

4 pump wheel

5 turbine

6 guide wheel

7 free wheel

8 driven device

9 speed variator input shaft

10 speed variator

11 Transmission housing

12 hydraulic circuit

13 Clutch device

14 piston

15 support shaft

16 Clutch housing hub

17 drive-side clutch element

18 driven-side clutch element

20 shock absorber system

21 drive unit

25 center projection

26 first connecting device

28 driven flange

29 torsional vibration damper

31 connecting element

32 connecting element

34 radial tooth

35 radial tooth

36 flange foot

37 screw

37a rivet

38 second connecting means

40 rotor frame

41 rotor

42 electric machine

43 connecting element

44 recess

45 screw thread recess

46 connecting element

48 fastening flange

49 fastening device

50 riveting piece

51 Carrier arrangement for a rotor frame

52 support part

53 supporting rod

54 hub

55 accommodating part

56 centering edge

58 notch

60 recess

61 notch

62 Clutch space

63 cover part

64 damper space

65 bearing

66 sealing device

68 outer contour