Source: https://patents.google.com/patent/DE102012221949A1/en
Timestamp: 2020-08-07 18:04:46
Document Index: 525487553

Matched Legal Cases: ['art 14', 'art 14', 'art 22', 'art 22', 'art 14', 'art 14', 'art 22', 'arts 14', 'art 34', 'arts 36', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14', 'art 14']

DE102012221949A1 - Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part - Google Patents
Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part
DE102012221949A1
DE102012221949A1 DE201210221949 DE102012221949A DE102012221949A1 DE 102012221949 A1 DE102012221949 A1 DE 102012221949A1 DE 201210221949 DE201210221949 DE 201210221949 DE 102012221949 A DE102012221949 A DE 102012221949A DE 102012221949 A1 DE102012221949 A1 DE 102012221949A1
DE201210221949
Gerd Ahnert
2012-11-30 Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
2012-11-30 Priority to DE201210221949 priority Critical patent/DE102012221949A1/en
2014-06-05 Publication of DE102012221949A1 publication Critical patent/DE102012221949A1/en
238000002485 combustion Methods 0.000 title claims description 15
F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
The device (10) has a rotatable part (14) i.e. flywheel (18), including a rotor (20), and a centrifugal force pendulum part (36) including a supporting unit (42) for supporting pendulum masses (40). The centrifugal force pendulum part is completely formed by a centrifugal force pendulum module (16) to be separated from the rotatable part. A holding and fastening unit (38) assemblies the centrifugal force pendulum module, and is formed such that the centrifugal force pendulum part completely or partially lies in a recess that is formed in the rotatable part. Independent claims are also included for the following: (1) a pre-assembled centrifugal pendulum module for installation during assembly or partial assembly of a rotating part in a drive train of a vehicle (2) a drive train for a vehicle.
The invention relates to a torque transmission device for a drive train of a vehicle, comprising a rotary part, in particular a flywheel having at least one flywheel, and a centrifugal pendulum device with pendulum masses and a support means carrying the pendulum masses. The invention further relates to a centrifugal pendulum module providing the centrifugal pendulum device and to a drive train with a torque transmission device.
A corresponding torque transmission device for the drive train of a motor vehicle is known. This has a flywheel with at least one flywheel and a centrifugal pendulum device with pendulum masses and a pendulum masses carrying support means and a friction clutch. In the drive train, the torque transmission device is interposed between an internal combustion engine and a transmission.
In the combustion chambers of the internal combustion engine, combustion processes take place, which transmit a non-continuous torque to the crankshaft driving the drive train as a result of their design-related mode of operation. As a result, torsional or torsional vibrations occur, for the damping of which so-called torsional vibration dampers or torsional vibration dampers are used. Torsional vibration dampers are integrated, for example, in clutch discs of the friction clutch. A special design of a torsional vibration is the centrifugal pendulum pendulum masses are arranged on raceways with circumferential and radial component, so that the pendulum masses take different radii for torsional vibrations and thus increases the moment of inertia of the pendulum masses receiving component and the component is slowed down for a short time.
It is the object of the invention to provide a torque transmission device with centrifugal pendulum device, a centrifugal pendulum module for forming the centrifugal pendulum device and a drive train with a torque transmission device in which the centrifugal pendulum device is simple and space-saving mountable.
The object is achieved according to the invention by the features of claims 1, 8 and 10. Preferred embodiments of the invention are specified in the subclaims, which individually or in combination may represent an aspect of the invention.
In the torque transmission device according to the invention, it is provided that the centrifugal pendulum device is completely formed by a separable from the rotary part centrifugal pendulum module, which further also has a holding and fastening device for mounting the centrifugal pendulum module, which is designed such that the centrifugal pendulum device of the mounted centrifugal pendulum -Moduls - held by the holding and fastening device - completely or at least partially rests in a recess formed in the rotary part. The term "assembly" refers in particular to the assembly of the centrifugal pendulum module within the torque transmission device.
There are the following advantages:
The centrifugal pendulum module can be used as a completed unit with a few simple assembly steps in the torque transmission device or the drive train.
The centrifugal pendulum device can be subjected to a functional test before assembly. Subsequently, the centrifugal pendulum module can be delivered as a tested unit.
In the torque transmission device according to the invention, no or only slight adjustments to the surrounding components, in particular the rotary part, must be made.
Furthermore, the connection of the centrifugal pendulum device to the rotary part, in particular of the flywheel, is improved (since simplified). For example, an influence of the thermal deformation of the flywheel or other rotating part can be isolated from the centrifugal pendulum.
The torque transmission device has, in particular, a rotary part designed as a flywheel with at least one flywheel. In the context of the embodiment of the invention described here, the term "flywheel mass" is understood to mean both a mass (in the physical sense) and a mass body (ie, a flywheel mass body) applying this flywheel mass.
According to a preferred embodiment of the invention it is provided that the holding and fastening device is designed as a holding and fastening device for simultaneous Mitmontage of the module during assembly or partial assembly of the remaining torque transmitting device or at least the rotary member in the drive train. The term "assembly" in this context refers both to the assembly of the centrifugal pendulum module within the Torque transmission device as well as on the assembly (or partial assembly) of the torque transmission device or at least the arrangement of rotary member and centrifugal pendulum module in the drive train.
According to a further preferred embodiment of the invention, it is provided that the assembly or partial assembly of the remaining torque transmission device in the drive train is a connection of the remaining torque transmission device with a torque transmission device driving and / or driven by the torque transmission device rotational element of the drive train, in which also the centrifugal pendulum module is connected to the rotary member and the rotary member.
Preferably, the rotation element is an output element of a drive machine of the drive train, in particular a crankshaft of an internal combustion engine.
According to yet another preferred embodiment of the invention, it is provided that the connection between the rotary member and the rotary member is a screw, in which the centrifugal pendulum module is screwed with.
It is provided in particular that the carrier device of the centrifugal pendulum device is connected via the holding and fastening device of the centrifugal pendulum module fixed to the rotary member.
Preferably, the centrifugal pendulum module is designed as a preassembled centrifugal pendulum module and thus has a functional centrifugal pendulum device.
The invention further relates to a preassembled centrifugal pendulum module for simultaneous Mitmontage in the assembly or partial assembly of a rotating part, in particular a flywheel, in a drive train of a vehicle, said centrifugal pendulum module centrifugal pendulum means pendulum masses, with at least one pendulum masses supporting means and a holding - And fastening device for Mitmontage the centrifugal pendulum module has. The centrifugal pendulum module is in particular a centrifugal pendulum module for forming the torque transmission device described above.
According to a preferred embodiment of the invention, it is provided that at least one opening for receiving at least one corresponding screw of the screw is formed in the holding and fastening device for Mitmontage carried out by means of a screw mounting or partial assembly. The holding and fastening device together with corresponding structures of the rotary part preferably also forms at least one projection-engagement alignment structure for aligning the centrifugal pendulum module with the rotary part. This makes it easy to mount the centrifugal pendulum module and rotating part together.
Alternatively or additionally, the centrifugal pendulum module, in particular its fastening device, designed such that the centrifugal pendulum module can be aligned on the rotary member.
The drive train according to the invention for a vehicle has a drive machine, in particular an internal combustion engine (an internal combustion engine), a transmission and an intermediate between the drive machine and the transmission torque transmission device, which is designed as a torque transmission device mentioned above.
1 FIG. 2 shows a torque transmission device according to a first preferred embodiment of the invention in a sectional representation, FIG.
1A : the individual components of the torque transmission device of 1 before their assembly,
2 FIG. 2 shows the torque transmission device according to a second preferred embodiment of the invention in a sectional representation and FIG
2A : the individual components of the torque transmission device of 2 before their assembly.
The 1 shows a sectional view of a torque transmission device 10 for a drive train of a vehicle, more precisely a motor vehicle. In this case, only the top of the torque transmission device 10 up to a rotation axis 12 shown. The torque transmitting device 10 has two assemblies 14 . 16 on, namely as a flywheel 18 trained rotary part 14 and a centrifugal pendulum module 16 , In addition to these two modules 14 . 16 can the torque transmission device 10 optionally also have further modules or components (not shown here). It is conceivable, for example, that the Torque transfer device 10 further comprising components which alone or together with the rotary part 14 and / or the centrifugal pendulum module 16 form a friction clutch of the vehicle. Such a torque transmission device 10 is in the powertrain of a motor vehicle generally interposed between the crankshaft of the internal combustion engine (the internal combustion engine) and a transmission input shaft of a transmission (both not shown).
The 1A shows the mutually separated assemblies (as a flywheel 18 trained rotary part and centrifugal pendulum module) 14 . 16 the in 1 shown torque transmission device 10 ,
The flywheel 18 is as a substantially disc-shaped one-mass flywheel with a arranged in the radial outer area flywheel (a flywheel mass body) 20 educated. Inside there is a flange 22 the flywheel 18 , This is formed cranked. The flywheel 20 and the flange part 22 are integrally formed. The flange part 22 has several breakthroughs 24 for inserting screws of a screw (not shown), by means of which the flywheel 18 or the other rotating part 14 can be attached to the crankshaft of the internal combustion engine.
Such attachment is part of a mounting of the rotary part 14 or the torque transmission device 10 in the drive train of the vehicle.
The flywheel 18 forms on one of its side surfaces 26 in the area of the flywheel 20 a recess 28 out. This recess 28 has the shape of a (wide) annular groove. At the outer circumference 30 the flywheel 18 or the flywheel 20 is a starter ring gear 32 the torque transmitting device 10 attached. The flange part 22 has one side surface 26 as a flywheel 18 trained rotary parts 14 still a head start 34 whose function is related to the centrifugal pendulum module 16 will be explained below.
The centrifugal pendulum module 16 has two functionally different parts 36 . 38 on, namely a centrifugal pendulum device 36 and a centrifugal pendulum device 36 holding holding and fastening device 38 , This device 38 is also designed as a flange. The centrifugal pendulum device 36 includes the following components: Several pendulum masses 40 and one the pendulum masses 40 supporting carrier device 42 (which may consist of several, each a pendulum mass 40 may consist of associated components). The pendulum masses 40 are circumferentially distributed regularly, in the figures only one pendulum mass 40 is shown. The carrier device 42 and the holding and fastening device 38 are integrally formed, more precisely designed as a common sheet metal part.
The holding and fastening device 38 has two types of breakthroughs 44 . 46 on. The breakthroughs 44 the one kind are used around with the lead 34 of the rotary part 14 a projection-engagement alignment structure 48 (to align the centrifugal pendulum module 16 on the rotation part 14 ) The breakthroughs 46 the other type are used to the centrifugal pendulum module 16 together with the rotary part 14 to be fastened by means of the screw connection to the crankshaft of the internal combustion engine. The centrifugal pendulum module is thus during assembly of the rotary part 14 with mounted. The holding and fastening device 38 is designed to be the centrifugal pendulum device 36 in the by means of the alignment structure 48 aligned position in the rotation part 14 trained recess 28 holds.
The centrifugal pendulum device is constructed as follows: Each of the pendulum masses 40 is by means of at least one (not shown) slotted guide along guide surfaces 50 . 52 the carrier device 42 guided on appropriate tracks. In addition, each of the pendulum masses 40 with (not shown) sliding recesses and the support means 42 in the area of their guiding surfaces 50 . 52 with further (not shown) Kulissenausnehmungen for engagement of at least one guide roller 54 Mistake. Per pendulum mass 40 For example, there are two guide rollers each 54 intended. Each of the leadership roles 54 passes through a sliding recess of their associated pendulum mass 40 and the other Kulissenausnehmungen of the guide surfaces 50 . 52 forming element of the carrier device 42 , The sliding recesses form roller conveyors of the guide rollers 54 , Each of the pendulum masses 40 is in the example of 1 . 1A designed as a laminated core pair whose laminated cores by means of rivets 56 held together, with each of the pendulum masses 40 the one package on one side and the other package on the other side of the guide surfaces 50 . 52 providing and as a guide sheet 58 trained carrier device 42 is arranged.
The torque transmitting device 10 of the 2 essentially corresponds to the torque transmission device 10 of the 1 so that only the differences are discussed here.
The 2A shows the mutually separated assemblies (as a flywheel 18 trained rotary part and centrifugal pendulum module) 14 . 16 the in 2 shown torque transmission device 10 ,
The rotation part 14 of the 2 respectively 2A completely corresponds to the rotation part 14 of the 1 respectively 1A , The momentum 20 the centrifugal pendulum device 36 of the 2 and 2A are contrary to those of the 1 and 1A each formed as a one-piece laminated core, between two guide plates 58 . 60 the carrier device 42 to be led. In this case, the respective inwardly facing side surface of the guide plates forms 58 . 60 one guide surface each 50 . 52 , The designed as a flange part holding and fastening device 38 of the 2 is integral with the one of the two guide plates 58 executed. The other guide plate 60 is on this one guide plate 58 attached.
Also in the centrifugal pendulum module of 2 is the holding and fastening device 38 designed so that they are the centrifugal pendulum device 36 in the by means of the alignment structure 48 aligned position in the rotation part 14 trained recess 28 holds.
The for the centrifugal pendulum device 36 available space provides the rotation part 14 through the recess 28 to disposal. The centrifugal pendulum device 36 is from a self-contained, separate assembly of the torque transmitting device 10 namely the centrifugal pendulum module 16 , educated. The centrifugal pendulum module 16 can be delivered functional in this completed form. If for this module (this unit) 16 a suitable fixation, for example combined with the screw connection on the crankshaft of the internal combustion engine is used, is the centrifugal pendulum device 36 So as an optional module 16 (add-on variant) feasible.
The centrifugal pendulum module 16 is mounted as a closed unit, without the surrounding components (in particular the rotary part 14 ) be included. The centrifugal pendulum module 16 is therefore separately testable as a functional unit.
There are no or only minor changes or processing of flywheel back 26 required, especially is no complex processing of fixation points on the flywheel 18 necessary. Furthermore, no special fixation parts are required. During assembly, no complicated assembly steps are necessary.
The fixation of the centrifugal pendulum module 16 can for example be combined with the crankshaft screw connection. The centering can directly to the rotation element (in particular to the crankshaft) or over the projection 34 (Paragraph) on the flywheel 18 respectively.
Crankshaft end, flywheel 18 and centrifugal pendulum module 16 may possibly be carried out so that even only one fixation of the flywheel 18 without centrifugal pendulum module 16 is possible. The necessary connection forms on the flywheel 18 and the crankshaft are then always given. The centrifugal pendulum can therefore as a module 16 be used.
For fixing the centrifugal pendulum module 16 Only a small space requirement is claimed. The inner edge of the centrifugal pendulum module 16 may for example be formed as a thin sheet metal disc.
Centrifugal pendulum module
Breakthrough (rotation part)
Centrifugal pendulum device
Holding and fastening device
pendulum mass
Breakthrough (centrifugal pendulum module)
Projection engaging alignment structure
Torque transmission device ( 10 ) for a drive train of a vehicle, with a rotary part ( 14 ), in particular a at least one flywheel ( 20 ) having flywheel ( 18 ), and a centrifugal pendulum device ( 36 ) with pendulum masses ( 40 ) and one of the pendulum masses ( 40 ) carrying carrier device ( 42 ), characterized in that the centrifugal pendulum device ( 36 ) completely from one of the rotary part ( 14 ) separable centrifugal pendulum module ( 16 ) is also formed, a holding and fastening device ( 38 ) for mounting the centrifugal pendulum module ( 16 ), which is designed such that the centrifugal pendulum device ( 36 ) of the mounted centrifugal pendulum module ( 16 ) completely or at least partly in one in the rotation part ( 14 ) formed recess ( 28 ) is present.
Torque transmission device according to claim 1, characterized in that the holding and fastening device ( 38 ) as a holding and fastening device for simultaneous Mitmontage the centrifugal pendulum module ( 16 ) in a mounting or partial assembly of the remaining torque transmitting device ( 14 ) or at least the rotary part ( 14 ) is formed in the drive train.
Torque transmission device according to claim 2, characterized in that the assembly or partial assembly of the remaining torque transmission device ( 14 ) in the drive train connecting the remaining torque transmitting device ( 14 ) with a torque transmission device ( 10 ) and / or by the torque transmission device ( 10 ) is to be driven rotational element of the drive train, in which also the centrifugal pendulum module ( 16 ) with the rotary part ( 14 ) and the rotation element is connected.
Torque transmission device according to claim 3, characterized in that the rotational element is an output element of a drive machine of the drive train, in particular a crankshaft of an internal combustion engine.
Torque transmission device according to claim 3 or 4, characterized in that the connection between the rotary part ( 14 ) and rotary element is a screw connection, in which the centrifugal pendulum module ( 16 ) is screwed with.
Torque transmission device according to one of claims 1 to 5, characterized in that the carrier device ( 42 ) of the centrifugal pendulum device ( 36 ) via the holding and fastening device ( 38 ) fixed to the rotary part ( 14 ) connected is.
Torque transmission device according to one of claims 1 to 6, characterized in that the centrifugal pendulum module ( 16 ) as a preassembled centrifugal pendulum module ( 16 ) is trained.
Pre-assembled centrifugal pendulum module ( 16 ) for the simultaneous Mitmontage during assembly or partial assembly of a rotating part ( 14 ), in particular a flywheel ( 18 ), in a drive train of a vehicle, this centrifugal pendulum module ( 16 ) a centrifugal pendulum device ( 36 ) with pendulum masses ( 40 ), with at least one of the pendulum masses ( 40 ) carrying carrier device ( 42 ) and a holding and fastening device ( 38 ) for mounting the centrifugal pendulum module ( 16 ) during assembly or partial assembly of the rotary part ( 14 ) in the drive train.
Centrifugal pendulum module according to claim 8, characterized in that in the holding and fastening device ( 38 ) at least one breakthrough for mounting with the assembly or partial assembly by means of a screw connection ( 46 ) is provided for receiving at least one corresponding screw of the screw.
A drive train for a vehicle, comprising a drive machine, in particular an internal combustion engine, a transmission and a torque transfer device interposed between the drive machine and the transmission ( 10 ), characterized in that said torque transmitting device ( 10 ) as a torque transmission device ( 10 ) is designed according to one of claims 1 to 8
DE201210221949 2012-11-30 2012-11-30 Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part Pending DE102012221949A1 (en)
DE201210221949 DE102012221949A1 (en) 2012-11-30 2012-11-30 Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part
DE102012221949A1 true DE102012221949A1 (en) 2014-06-05
ID=50725953
DE201210221949 Pending DE102012221949A1 (en) 2012-11-30 2012-11-30 Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part
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