Clutch cover

Abstract

Clutch cover (24) for a clutch device (10) in a drive train of a motor vehicle for covering the clutch device (10) with a first section (26) extending at least partially in the circumferential and radial directions beyond a pressure plate (16) for axial limitation of the clutch device (10) and a second section (28) extending at least partially in the circumferential and axial directions beyond the pressure plate (16) towards a counter plate (14) for radial limitation of the clutch device (10). The use of the clutch cover (24) enables a space-saving and safe clutch device (10).

Description

[0001] The invention relates to a clutch cover for a clutch device in a drive train of a motor vehicle for covering the clutch device in order to prevent the escape of burst clutch components in the radial direction.

[0002] From DE 10 2014 200 784 A1 a clutch cover for covering a clutch on one side, in particular on the transmission side, is known, in which the clutch cover, according to Fig. 4 of DE 10 2014 200 784 A1, is arranged in the area of ​​the pressure plate. Furthermore, a clutch and a transmission with such a clutch cover are disclosed.

[0003] There is a constant need to reduce the damage potential of burst components of a coupling device by space-saving means.

[0004] The object of the invention is to show measures that enable a space-saving and safe coupling device.

[0005] The object is achieved by a clutch cover having the features of claim 1 and a clutch device having the features of claim 7. Preferred embodiments of the invention are specified in the subclaims and the following description, which may each individually or in combination represent an aspect of the invention.

[0006] One embodiment relates to a clutch cover for a clutch device in a drive train of a motor vehicle for covering the clutch device with a first section extending at least partially in the circumferential direction and radial direction beyond a pressure plate for axially delimiting the clutch device and a second section extending at least partially in the circumferential direction and axial direction beyond the pressure plate in the direction of a counter plate for radially delimiting the clutch device.

[0007] The clutch cover can shield damaged and rotating components, in particular clutch discs and / or intermediate plates, of the clutch device from the surrounding motor vehicle components, in particular the clutch bell housing. This is particularly advantageous when fragments of burst components, in particular clutch discs and / or intermediate plates, are ejected radially from the clutch device due to the high rotational speed along a rotational axis of the clutch device. Such fragments generally have a very high damage potential and are capable of damaging the surrounding motor vehicle components, in particular the clutch bell housing. The clutch cover can advantageously extend axially beyond the pressure plate to the counter plate.As a result, radial movement of the rotating components, particularly clutch discs and / or intermediate plates, between the counterplate and the pressure plate can be limited by the clutch cover, thus preventing them from falling out. The use of the clutch cover enables a space-saving and secure clutch device.

[0008] With the clutch cover, in particular in a friction clutch, a pressure plate can be axially displaced with the aid of a lever element pivotally mounted on the clutch cover in order to frictionally press a clutch disc coupled to a transmission input shaft of a motor vehicle transmission between the pressure plate and a counter-plate coupled directly or indirectly to a drive shaft of a motor vehicle engine.

[0009] In particular, the first section and the second section are formed as a single piece. This allows for the realization of a very stable clutch cover. The single-piece design also facilitates simple assembly and cost-effective production of the clutch cover. The first section can extend essentially in the radial direction, and the second section essentially in the axial direction. This allows the first section and the second section to be arranged at an angle of 85° to 105° to one another. "Single piece" can in particular mean that the first section and the second section are integrally connected to one another.

[0010] Preferably, the second section is arranged downstream of at least one intermediate plate of the clutch device in the radial direction. The at least one intermediate plate can be arranged in the axial direction, in particular, between the counterplate and the pressure plate. The at least one intermediate plate can be arranged in the axial direction, in particular, between two clutch discs. Due to the arrangement of the second section, the clutch cover can prevent fragments of a damaged intermediate plate from escaping from the clutch device.

[0011] Particularly preferably, the second section is arranged downstream of at least one clutch disc of the clutch device in the radial direction. The at least one clutch disc can be arranged in the axial direction, in particular, between the counterplate and the pressure plate. Due to the arrangement of the second section, the clutch cover can prevent fragments of a damaged clutch disc from escaping from the clutch device.

[0012] In particular, the clutch cover is essentially designed as an annular disc. An annular disc is understood to be a disc that runs in the radial direction and thus defines the second plane essentially parallel to the first plane. In this case, it is not necessary for the annular disc to be round in the second plane, i.e., in particular, it does not have to have an inner and / or outer radius. The decisive factor is that forces can be transmitted in the circumferential direction that arise in one section of the clutch cover and can be absorbed in another section. The clutch cover is made in particular from sheet metal. The clutch cover in particular has a wall thickness of a maximum of 5 mm, preferably a maximum of 3 mm or particularly preferably a maximum of 1 mm. This allows the clutch cover to be lighter and to be easily manufactured using metal forming.

[0013] The clutch cover can preferably be manufactured by primary forming and / or forming. The clutch cover can be manufactured, in particular, by compression forming, tensile compression forming, tensile forming, bending forming, and / or shear forming. This allows the clutch cover to be produced cost-effectively and in large quantities.

[0014] A further embodiment relates to a clutch device for a drive train of a motor vehicle for the indirect or direct coupling of a drive shaft of a motor vehicle engine to at least one transmission input shaft of a motor vehicle transmission, with a counterplate for introducing a torque, at least one clutch disc for discharging the torque, a pressure plate displaceable in the axial direction relative to the counterplate for pressing the at least one clutch disc between the counterplate of the pressure plate and a clutch cover according to the features of the description.

[0015] In particular, the clutch device comprises at least one intermediate plate arranged between the counter plate and the pressure plate for force-locking, particularly friction-locking, torque transmission. The additional friction surface of the intermediate plate allows the clutch device to transmit greater torque.

[0016] The clutch device is preferably designed as a two-disk clutch, particularly preferably as a double clutch. The two-disk clutch can, in particular, have two clutch discs and an intermediate plate for torque transmission. The two clutch discs and the intermediate plate allow for reliable transmission of larger torques. The double clutch can, in particular, additionally have two hollow shafts for the rotationally fixed connection, each with a transmission input shaft. However, other embodiments in the field of multi-disk clutches are also conceivable.

[0017] Particularly preferably, the intermediate plate can be brought into frictional contact with a friction lining of the at least one clutch disc either with its first axial side facing the counter-plate and with its second axial side facing the pressure plate, or the intermediate plate can be brought into frictional contact with a friction lining of the clutch disc only with its second axial side facing the pressure plate and is axially supported on the counter-plate with its first axial side facing the counter-plate.

[0018] The invention will be explained below by way of example with reference to the accompanying drawings using a preferred embodiment, wherein the features presented below can represent an aspect of the invention both individually and in combination. It shows: Fig. 1: a side sectional view of a first embodiment of a coupling device.

[0019] The Fig.The clutch device 10 shown in Figure 1 is operatively connected to a dual-mass flywheel 12. The clutch device 10 has a counterplate 14 for introducing torque from the dual-mass flywheel 12. At the opposite end of the clutch device 10, a pressure plate 16 is arranged, which is axially displaceable relative to the counterplate 14 and is used to press the clutch discs 18 arranged between the counterplate 14 and the pressure plate 16 and the intermediate plate 20. The axial displacement of the pressure plate 16 creates a force-fitting, in particular friction-fitting, connection between the counterplate 14, the clutch discs 18, the intermediate plate 20, and the pressure plate 16. As a result, the torque introduced into the clutch device 10 via the counterplate 14 can be transmitted to a ring gear 22 via the clutch discs 18. The torque can then be transmitted to a transmission input shaft via the ring gear 22.To protect the clutch device 10 and the surrounding motor vehicle components, the clutch device 10 has a clutch cover 24 with a first section 26 extending at least partially in the circumferential and radial directions beyond a pressure plate 16 for axially defining the clutch device 10, and a second section 28 extending at least partially in the circumferential and axial directions beyond the pressure plate 16 in the direction of a counter-plate 14 for radially defining the clutch device 10. As a result, broken pieces of the intermediate plate 20 and / or the clutch discs 18, which can be ejected radially from the clutch device 10 due to the high torques in the clutch device 10, can be stopped by the clutch cover 24. In this way, the potential damage from broken components in the clutch device 10 can be reduced. List of reference symbols 10 Coupling device 12 Dual-mass flywheel 14 Counter plate 16 Pressure plate 18 clutch discs 20 intermediate plate 22 ring gear 24 clutch cover 26 first section 28 second section QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2014 200 784 A1

[0002]

Claims

[1] Clutch cover for a clutch device (10) in a drive train of a motor vehicle for covering the clutch device (10) with a first section (26) extending at least partially in the circumferential direction and radial direction beyond a pressure plate (16) for axially delimiting the clutch device (10) and a second section (28) extending at least partially in the circumferential direction and axial direction beyond the pressure plate (16) in the direction of a counter-plate (14) for radially delimiting the clutch device (10). [2] Clutch cover according to claim 1, wherein the first portion (26) and the second portion (28) are formed in one piece. [3] Clutch cover according to claim 1 or 2, wherein the second portion (28) is arranged downstream of at least one intermediate plate (20) of the clutch device (10) in the radial direction. [4] Clutch cover according to one of the preceding claims, wherein the second portion (28) is arranged downstream in the radial direction of at least one clutch disc (18) of the clutch device (10). [5] Clutch cover according to one of the preceding claims, wherein the clutch cover (24) is essentially designed as an annular disc. [6] Clutch cover according to one of the preceding claims, wherein the clutch cover (24) can be produced by primary forming and / or forming. [7] Coupling device for a drive train of a motor vehicle for the indirect or direct coupling of a drive shaft of a motor vehicle engine to at least one transmission input shaft of a motor vehicle transmission, with a counter-plate (14) for introducing a torque, at least one clutch disc (18) for discharging the torque, a pressure plate (16) which is displaceable in the axial direction relative to the counter-plate (14) for pressing the at least one clutch disc (18) between the counter-plate (14) of the pressure plate (16) and a clutch cover (24) according to one of claims 1 to 6. [8] Coupling device according to claim 7, comprising at least one intermediate plate (20) arranged between the counter-plate (14) and the pressure plate (16) for non-positive, in particular frictional torque transmission. [9] Coupling device according to claim 7 or 8, wherein the coupling device (10) is designed in particular as a two-disk clutch, particularly preferably as a double clutch. [10] Clutch device according to claim 8 or 9, wherein the intermediate plate (20) can be brought into frictional contact with a friction lining of the at least one clutch disc (18) either with its first axial side facing the counter-plate (14) and with its second axial side facing the pressure plate (16), or the intermediate plate (20) can be brought into frictional contact with a friction lining of the clutch disc (18) only with its second axial side facing the pressure plate (16) and is axially supported on the counter-plate (14) with its first axial side facing the counter-plate (14).

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