CN101688584B

CN101688584B - Friction clutch with a clutch disk for transmitting torques

Info

Publication number: CN101688584B
Application number: CN2008800234859A
Authority: CN
Inventors: S·莱曼; D·西贝尔
Original assignee: Schaeffler Technologies AG and Co KG
Priority date: 2007-07-05
Filing date: 2008-06-16
Publication date: 2011-11-16
Anticipated expiration: 2028-06-16
Also published as: DE112008001560A5; WO2009006869A1; DE102008028570A1; CN101688584A

Abstract

The invention relates to a friction clutch with a clutch disk (9) for transmitting torques in a drivetrain (5) of a motor vehicle (7), having a dynamic damper (19) which has a mass (21) and a rotary vibration damper (23), wherein the mass can be or is coupled to the clutch disk by means of an energy store (29) of the rotary vibration damper and by means of a slipping clutch (49) which is connected in series to the rotary vibration damper. The invention is characterized in that the slipping clutch has an axial spring friction element (39) which is fixedly assigned to the clutch disk and which is assigned to the rotary vibration damper in a frictionally engaging manner or so as to rotate in a sliding manner in the event of a maximum friction torque being exceeded, and which serves to exert an axial pressure force on the rotary vibration damper and to generate the friction torque.

Description

The friction clutch that is used for transmitting torque with clutch driven plate

Technical field

The present invention relates in the power train of Motor Vehicle, be used for the friction clutch with clutch driven plate of transmitting torque, it comprises a dynamic shock-absorber with a quality and a torsional vibration damper, wherein, this quality connects maybe with clutch driven plate and can connect by an accumulator and a sliding clutch of connecting with torsional vibration damper of torsional vibration damper.

Background technique

Friction clutch can be used for transmitting torque, for example the torque that is produced by the internal-combustion engine of Motor Vehicle.The clutch driven plate of clutch or friction clutch can be disposed flywheel to a multi-part type of power train for this reason.What is called when it connects is pulled and is drawn vibration for fear of torsional vibration or friction clutch, known a vibration absorber is set.DE 101 17 745 A1 disclose a kind of clutch driven plate that is particularly useful for the friction clutch of Motor Vehicle, and it is provided with a dynamic shock-absorber.

Summary of the invention

Task of the present invention is, a kind of improved friction clutch is provided, and it especially is provided with improved dynamic shock-absorber on the structure.

This task will solve on a friction clutch, this friction clutch is provided with a clutch driven plate that is used at the power train transmitting torque of Motor Vehicle, dynamic shock-absorber with a quality and a torsional vibration damper, wherein this quality connects maybe with clutch driven plate and can connect by an accumulator and a sliding clutch of connecting with torsional vibration damper of torsional vibration damper, this task solves like this: sliding clutch has one and disposes the axial elasticity friction member of giving clutch driven plate regularly, and this axial elasticity friction member friction sealedly is maybe slidably disposed to torsional vibration damper when surpassing a maximum friction moment with reversing and is used for being applied to an axial pressing force on the torsional vibration damper and producing friction torque.This axial elasticity friction member can advantageously satisfy two functions, and the first applies and is used to produce the required axial pressing force of friction torque, and it two is to be provided with a rubbing surface, causes friction torque by this axial pressing force on this rubbing surface.This axial elasticity friction member directly forms the contact that reclines with a corresponding rubbing surface of torsional vibration damper for this reason.

This task also will solve on a friction clutch, this friction clutch is provided with a clutch driven plate that is used at the power train transmitting torque of Motor Vehicle, dynamic shock-absorber with a quality and a torsional vibration damper, wherein this quality connects with clutch driven plate by an accumulator and a sliding clutch of connecting with torsional vibration damper of torsional vibration damper, and this task solves like this: friction clutch has an other clutch driven plate.This other clutch driven plate can additionally transmit a torque.Connection on clutch driven plate and this other clutch driven plate is decided, and also can advantageously come the excitation of this other clutch driven plate of damping to torsional vibration by the dynamic clutch that is provided with.

Other embodiment of this friction clutch is characterised in that: this friction clutch is configured double clutch or double plate clutch.On a double clutch, for gearshift, selectively closed described clutch driven plate or a described other clutch driven plate of the speed changer in the power train that is located at Motor Vehicle.The torsional vibration that set dynamic shock-absorber also can advantageously be decayed and may encourage thus when load torque is delivered to an other clutch driven plate by a clutch driven plate and in the opposite direction transmits.On a double plate clutch, common two clutch driven plates are side by side closed or open, wherein also advantageously, and the torsional vibration that set dynamic shock-absorber also can be decayed and may occur at this.

This task also will solve on a friction clutch, this friction clutch is provided with a clutch driven plate that is used at the power train transmitting torque of Motor Vehicle, dynamic shock-absorber with a quality and a torsional vibration damper, wherein this quality connects with clutch driven plate by an accumulator and a sliding clutch of connecting with torsional vibration damper of torsional vibration damper, and this task solves like this: the accumulator of torsional vibration damper has the stage clip of at least two mutual preloads of quilt in a zero position.Clutch driven plate and quality can be advantageously by these stage clips quilt preloads mutually, wherein for example can regulate the relative clutch driven plate of this quality in described zero position radially and/or axial location, this zero position basically with the gravitational independent that acts on this double clutch.

Other embodiment of this friction clutch is characterised in that: torsional vibration damper has a retainer.This retainer can be provided to support described accumulator.

Other embodiment of this friction clutch is characterised in that: this retainer forms to recline with the axial elasticity friction member and contacts.Advantageously, this retainer can have the corresponding rubbing surface that forms the contact that reclines with the rubbing surface of axial elasticity friction member, to produce friction torque.

Other embodiment of this friction clutch is characterised in that: this retainer is a two-piece type.Accumulator and retainer can advantageously assemble simply.

Other embodiment of this friction clutch is characterised in that: one first stage clip in described at least two stage clips is connected between one first backstop of tooth of described quality and described retainer, and one second stage clip in described at least two stage clips is connected between second backstop of this tooth and this retainer one and this first backstop positioned opposite.These two stage clips can be arranged between this first and second backstop to preload like this, so that described tooth centre between these two backstops of retainer in described zero position.

Other embodiment of this friction clutch is characterised in that: this retainer has one first dish and second dish that axially is adjacent to arrange with this first dish.But these dish shapes do not have sealedly with relatively rotating and contact with each other, so that when the slip that may occur, two dishes synchronously slide in case of necessity.Other rubbing surface can advantageously form to recline with this clutch driven plate itself and contact, and the slip of this friction clutch both can also can originally realize under catabiotic situation at this clutch driven plate on the axial elasticity friction member on one's body thus.

This task is also realized by a Motor Vehicle with above-mentioned friction clutch in addition.

By advantage, feature and the details that can obtain other in the following explanation of embodiment being described in detail with reference to accompanying drawing.For identical, similarly and/or the identical part of function represent with identical label.

Description of drawings

Fig. 1 a: section of the longitudinal section of the double clutch of the power-shifting transmission of the power train of a Motor Vehicle;

Fig. 2: the plan view of a clutch driven plate of the double clutch shown in Fig. 1;

Fig. 3 a: longitudinal section of the clutch driven plate shown in Fig. 2;

Fig. 4: the detailed drawing of cutting part open in the dynamic shock-absorber zone of the plan view of the clutch driven plate shown in Fig. 2;

Fig. 5 a: detailed drawing of the longitudinal section of the clutch driven plate shown in Fig. 3;

Fig. 6: a three-dimensional disintegration figure who sees from oblique the place ahead of the clutch driven plate shown in Fig. 2 to 5;

Fig. 7 a: section of the longitudinal section of the double plate clutch of the power train of a Motor Vehicle;

Fig. 8: the plan view of a clutch driven plate of the double plate clutch shown in Fig. 7;

Fig. 9 a: longitudinal section of clutch driven plate shown in Fig. 8;

Figure 10: the detailed drawing of cutting part open in the dynamic shock-absorber zone of the plan view of the clutch driven plate shown in Fig. 8;

Figure 11 a: detailed drawing of the longitudinal section of the clutch driven plate shown in Fig. 9; And

A three-dimensional figure that disintegrates of the clutch driven plate shown in Figure 12: Fig. 8 to 11.

Embodiment

Fig. 1 represents the double clutch 1 of power-shifting transmission 3 of the power train 5 of a Motor Vehicle 7.This double clutch 1 has a clutch driven plate 9 and another clutch driven plate 11.Control on double clutch 1 is decided, and the engine torque of a unshowned internal-combustion engine of Motor Vehicle 7 will be delivered on the solid shaft 13 by this another clutch driven plate 11, or be delivered on the hollow shaft 15 by clutch driven plate 9.Carry out the gearshift of power-shifting transmission by two clutch driven

plates

9,11 or affiliated sub-clutch under the situation of power shfit, wherein during another clutch was opened, a clutch was little by little closed.Length on the overlapping stage is decided, and so-called pulling can occur and draw vibration or torsional vibration.Usually under many circumstances torsional vibration can appear when friction clutch of operating motor vehicle, this owing to friction plate 17 with and the clutch driven

plate

9,11 of its formation frictional fit between pull and draw phenomenon.We also are called and pull pull type clutch.This pulling draws vibration mainly based on the inhomogeneous rotation that may exist of the driving motor of Motor Vehicle 7, and the fluctuation of the impacting force in the interactional rubbing surface zone, for example the fluctuation of the impacting force that is produced by the uneven rubbing surface of friction plate 17.And, for example draw vibration in the power train 5 of Motor Vehicle 7 because the friction factor wave energy that the variation of Sliding velocity causes between variation of temperature and/or the rubbing surface produces to pull.Draw the periodicity fluctuation of speed of generation will cause alternately quickening of Motor Vehicle by pulling of double clutch 1, should alternately quicken to make the people feel uncomfortable, the Motor Vehicle noise can occur in addition as so-called push-and-pull.Advantageously, this phenomenon that causes by double clutch 1 will decay for the dynamic shock-absorber 19 of clutch driven plate 9 by configuration effectively.

A plan view and a longitudinal section of Fig. 2 and 3 expression clutch driven plates 9.Fig. 4 and 5 respectively is illustrated in a detailed drawing of the dynamic shock-absorber 19 of the clutch driven plate 9 shown in Fig. 2 and 3.Dynamic shock-absorber 19 has a quality 21, and it disposes rotationally to clutch driven plate 9.The configuration of 21 pairs of clutch driven plates 9 of quality realizes by a rotational-torsional vibration damper 23 with accumulator 29 of realizing by first stage clip 25 and second stage clip 27.

Stage clip

25 and 27 can pass among Fig. 4 to cut part open in sight.Accumulator 29 can have many to

stage clip

25,27, and for example the stage clip on four circumference that are evenly distributed in clutch driven plate 9 is right.Fig. 4 is illustrated in a dynamic shock-absorber 19 or a torsional vibration damper 23 in the zero position, and wherein quality 21 tooth 31 is in first backstop 33 of a retainer 37 of clutch driven plate 9 and the centre between second backstop 35.Therefore first stage clip 25 is connected between the tooth 31 of first backstop 33 of retainer 37 and quality 21.Second stage clip 27 but is being connected on the opposite side of tooth 31 between second backstop 35 of this tooth 31 and retainer 37 similarly.As can be seen, by this preload can make relative retainers of quality 21 37 fixed in, wherein preload by this, advantageously obtain one approx with the radial location of the gravitational independent of quality 21 or fixed in.Can realize axial fixing by

stage clip

25 and 27 in addition.Retainer 37 is set between clutch driven plate 9 and the axial elasticity friction member 39.Axial elasticity friction member 39 does not have configuration by rivet 41 with relatively rotating and gives clutch driven plate 9.

Axial elasticity friction member 39 is seen axial force left in orientation at Fig. 5 of effect on the retainer 37, represent it by arrow 43 in Fig. 5.Axial elasticity friction member 39 forms to recline on first rubbing surface 45 with retainer 37 and contacts.Retainer 37 forms to recline with clutch driven plate 9 on one second rubbing surface 47 and contacts.Axial elasticity friction member 39 has formed a sliding clutch 49 for its retainer 37 with its

rubbing surface

45 and 47 with configuration; avoid excessive accelerating torque with protection torsional vibration damper 23, this excessive accelerating torque for example can occur in the power train 5 at Motor Vehicle 7 under the special load condition.Also can avoid

stage clip

25 and 27 to be pressed into piece in the case, in order to avoid noise occurs, wherein the corresponding friction torque of first and second rubbing

surface

45,47 can be less than a spring force that is pressed into the

stage clip

25,27 of piece.Reversing under the relatively little situation of acceleration and/or torsional vibration, the quality 21 of dynamic shock-absorber 19 can correspondingly be rotated relative to clutch driven plate 9 with the degrees of freedom of torsional vibration damper 23.Can eliminate the torsional vibration that in the power train 5 of Motor Vehicle 7, occurs in the case.Also can be advantageously, the natural frequency of the torsional vibration damper 23 that make dynamic shock-absorber 19, promptly combines with quality 21 adapts to the critical resonant frequency that exists in power train 5.

The disintegration figure of a three-dimensional of the clutch driven plate 9 of the double clutch 1 shown in Fig. 6 presentation graphs 2 to 5.Can see that this torsional vibration damper 23 has four pairs of

stage clips

25,27 altogether.Also can see axial elasticity friction member 39, it can be connected with the remaining part of clutch driven plate 9 by six rivets 41 altogether, and wherein this axial elasticity friction member will sealedly maybe slidably be pressed on the remaining part of clutch driven plate 9 when above maximum friction moment rotationally with its retainer 37 frictions that axially are adjacent to arrange.

Right for the stage clip of

fixing stage clip

25 and 27, quality 21 has four teeth 31.Can be provided with four other backstop teeth 51 between these teeth 31, the outer side surface of the housing 53 of retainer 37 can be in outside backstop on these backstop teeth.By the outer side surface of backstop on backstop tooth 51 of housing 53, can avoid

stage clip

25 and 27 to be pressed into piece.Therefore can: may be high reverse acceleration the time, at first be housing 53 backstops on the backstop tooth 51 and higher when reversing acceleration, slide based on the sliding clutch 49 that is provided with at interior whole dynamic shock-absorber 19 together with retainer 37, promptly together with retainer 37 in the interior whole dynamic shock-absorber 19 relative friction torque that produces by first and

second rubbing surface

45,47 of the remaining part of clutch driven plate 9 opposing and reversing generally.

Fig. 7 represents the section of longitudinal section of double plate clutch 55 of the power train 5 of a Motor Vehicle 7.This double plate clutch 55 also has a clutch driven plate 9 and another clutch driven plate 11, wherein clutch driven plate 9 has also been disposed a dynamic shock-absorber 19.A plan view of the clutch driven plate 9 shown in Fig. 8 presentation graphs 7.Clutch driven plate 9 longitudinal section shown in Fig. 9 presentation graphs 8.Figure 10 and 11 each expression are according to the detailed drawing of the dynamic shock-absorber 19 of the view of the clutch driven plate 9 of Fig. 8 and 9.Figure 12 represents a three-dimensional disintegration figure being seen by oblique the place ahead of the clutch driven plate shown in Fig. 8 to 11 9.Only describe difference below in detail with the double clutch 1 shown in Fig. 1 to 6.

The torsional vibration damper 23 of different is this dynamic shock-absorber 19 only has three, and each is not by the stage clip 57 of preload.As another difference is that retainer 37 is divided into two-part and has 61 and one second dishes 63 of one first dish.Dish 61 and 63 constitutes retainer 37, and wherein this retainer has three dead slots 59, but inserts to both sides backstop stage clip 57 in these dead slots.The extension of dead slot 59 on its circumference adapts to the corresponding intermediate gaps 65 of quality 21.The intermediate gaps 65 of quality 21 is each positioned between two driving cogs 67 of quality 21.As shown in figure 10, stage clip 57 can be inserted in the dish 61 of retainer 37 and 63 the dead slot 59 and can similarly be inserted in the intermediate gaps between the driving cog 67 of quality 21.Quality 21 spring force that can resist stage clip 57 rotates relative to retainer 37 in the case.Retainer 37 similarly by axial elasticity friction member 39 friction before surpassing the peak torque of sliding clutch 49 dispose remaining part to clutch driven plate 9 sealedly.Second dish 63 of different is retainer 37 has the rubbing surface 47 of sliding clutch 49.Therefore second dish 63 forms to recline with the remaining part of clutch driven plate 9 and contact, and first coil 61 and recline with the formation of axial elasticity friction member and to contact.This axial elasticity friction member 39 disposes by six rivets 41 similarly and gives clutch driven plate 9.The driving cog 67 of quality 21 will satisfy one difunctional, promptly on the one hand be used for the supporting of stage clip 57 or be used to transmit the spring force of stage clip 57 and constitute backstop tooth 51 similar backstops with the quality 21 shown in Fig. 1 to 6 on the other hand.Therefore driving cog 67 on the one hand can by stage clip 57 transmit dynamic shock-absorbers 19 torsional vibration damper 23 torsional torque and directly on the backstop 69 of first and second dish 61,63 of retainer 37, transmit excessive torque on the other hand by backstop.

By contrast, the accumulator 29 of this torsional vibration damper 23 only has three stage clips 57.

The double clutch 1 of putting it briefly has at least one torsional vibration damper 23.Can consider that two clutch driven

plates

9,11 have a torsional vibration damper 23.Same double plate clutch 55 can be provided with torsional vibration damper 23, wherein also is that two clutch driven

plates

9,11 can have such torsional vibration damper 23.The axial elasticity friction member 39 that advantageously can constitute the saucerspring form can apply an axial force (arrow 43) equably and have first rubbing surface that is used to produce corresponding friction torque.

In order further to reduce outside friction and bearing friction, (Fig. 1 to 6) can be by preload each other in zero position for first stage clip 25 and second stage clip 27.

Therefore the combination of an alternative independent belleville spring of axial elasticity friction member and a supporting disk.

Usually can be regarded as in the clutch friction torque fluctuation of self or external excitation for " pull and draw ", this friction torque fluctuation is activated to corresponding vibration with power train 5, and this vibration shows as uncomfortable Motor Vehicle extensional vibration again.Can be advantageously in order to overcome it, at clutch driven plate 9, a what is called is set at least one of 11 pulls and draw vibration absorber or dynamic shock-absorber 19, its natural frequency and pulling of power train 5 draw consistent and its vibration by opposite phase of natural frequency to prevent that pulling of power train 5 from drawing the foundation of vibration.

The details of Fig. 4 and 5 expression clutch driven plates 9.The hub of a clutch driven plate carries the parts of dynamic shock-absorber 19.What belong to these parts has a sliding clutch 49, and it is constituted by 39 preloads of axial elasticity friction member by retainer 37.Here axial elasticity friction member 39 is connected with hub by rivet 41.Also can for example be threaded with other connection, welding, bonding etc.Torque is delivered on oscillating mass or the quality 21 by the

stage clip

25,27 of retainer 37 by the mutual preload of quilt.Preloading of

stage clip

25,27 both is used for radially maintaining quality 21 and reduces possible bearing friction thus, for example by conduct the preloading of reaction force of the gravity of quality 21 realized.This preloads the possible outside friction that has reduced 25,27 pairs of quality 21 of stage clip and retainer 37 simultaneously.

Fig. 7 represents a section of double plate clutch 55.A torque to be passed side by side is delivered to each sub-clutch driven plate 9 of double plate clutch 55 by each two rubbing surface, on 11, this a little clutch driven plate or dividually this torque is imported a transmission shaft 71 of power train, or this torque is focused in the clutch driven plate and for example is delivered on the transmission shaft 71 by the grafting tooth portion 73 of clutch driven

plate

9,11 and the hub 75 of another clutch driven plate 11.Having fixed one at least one of two clutch driven

plates

9,11 pulls and draws vibration absorber or dynamic shock-absorber 19.That sub-clutch driven

plate

9,11 can be rigidity or as shown in Fig. 7 to 12, equipped a torsional vibration damper.Although double plate clutch 55 has the rubbing surface of double number but can be advantageously draws vibration by the dynamic shock-absorber 19 that is provided with pulling of coming that damping may occur with strengthening, so that still can only relatively little pulling draw vibration transfer on power train 5.

The parts that draw vibration absorber or dynamic shock-absorber 19 are pulled in the Moving plate carrying of taking of clutch driven plate 9 or clutch driven plate 9.What belong to these parts has a sliding clutch 49, and it is constituted by 39 preloads of axial elasticity friction member by the dish 61,63 of retainer 37.Here axial elasticity friction member 39 with take Moving plate or clutch driven plate 9 is connected by rivet 41.Placement with other also is possible.Torque by the dish 61,63 of retainer 37 by not being delivered on the quality 21 by the stage clip 57 of preload.In according to the embodiment of Fig. 7 to 12, also can carry out preload in principle.First clutch driven disc 9 is connected with another clutch driven plate 11 by grafting tooth portion 73.This another clutch driven plate transmits 50% of engine torque.The embodiment of different embodiments' feature Cheng Xin capable of being combined.

The reference number inventory:

1. double clutch 23. rotational-torsional vibration dampers

3. power-shifting transmission 25. first stage clips

5. power train 27. second stage clips

7. Motor Vehicle 29. accumulators

9. clutch driven plate 31. teeth

11. another clutch driven plate 33. first backstops

13. solid shaft 35. second backstops

15. hollow shaft 37. retainers

17. friction plate 39. axial elasticity friction members

19. dynamic shock-absorber 41. rivets

21. quality 43. arrows

45. first rubbing surface, 49. sliding clutches

47. second rubbing surface, 51. backstop teeth

53. housing

55. double plate clutch

57. stage clip

59. dead slot

61. first dish

63. second dish

65. intermediate gaps

67. driving cog

69. backstop

71. transmission shaft

73. grafting tooth portion

75. hub

77. torsional vibration damper

Claims

1. friction clutch is provided with:

One is used for the clutch driven plate (9) at a power train (5) transmitting torque of Motor Vehicle (7),

One has the dynamic shock-absorber (19) of a quality (21) and a torsional vibration damper (23), wherein, this quality (21) can connect with this clutch driven plate (9) by an accumulator (29) and a sliding clutch (49) of connecting with this torsional vibration damper (23) of this torsional vibration damper (23), it is characterized in that: this sliding clutch (49) has one and disposes the axial elasticity friction member (39) of giving this clutch driven plate (9) regularly, and this axial elasticity friction member friction sealedly is maybe slidably disposed to give this torsional vibration damper (23) and be used for that an axial pressing force is applied to this torsional vibration damper (23) when surpassing a maximum friction moment with reversing and gone up and produce this friction torque.

2. according to the friction clutch of claim 1, it is characterized in that: this friction clutch has an other clutch driven plate (11).

3. according to one friction clutch in the above claim, it is characterized in that: this friction clutch is designed to double clutch (1) or double plate clutch (55).

4. according to the friction clutch of claim 1, it is characterized in that: this accumulator (29) of this torsional vibration damper (23) has the stage clip (25,27) of at least two mutual preloads of quilt in a zero position.

5. according to the friction clutch of claim 4, it is characterized in that: this torsional vibration damper (23) has a retainer (37).

6. according to the friction clutch of claim 5, it is characterized in that: this retainer (37) is in to recline with this axial elasticity friction member (39) and contacts.

7. according to the friction clutch of claim 5, it is characterized in that: this retainer (37) is for two-piece type.

8. according to one friction clutch in the claim 5 to 7, it is characterized in that: described at least two stage clips (25,27) first stage clips of 1 in (25) are connected between one first backstop (33) of the tooth (31) of this quality (21) and this retainer (37), one second stage clip (27) in described at least two stage clips (25,27) is connected between this tooth (31) and second backstop (35) that one and this first backstop (33) of this retainer (37) are faced mutually.

9. according to one friction clutch in the claim 5 to 7, it is characterized in that: this retainer (37) has one first dish (61) and and second coils (63) with this first dish axially is adjacent to arrange.

10. Motor Vehicle (7) is characterized in that: it has one according to one friction clutch in the above claim.