CN102844580A

CN102844580A - Clutch actuation system

Info

Publication number: CN102844580A
Application number: CN2011800191624A
Authority: CN
Inventors: J·马里图尔内; S·奥特曼
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2010-04-15
Filing date: 2011-03-28
Publication date: 2012-12-26
Anticipated expiration: 2031-03-28
Also published as: WO2011127891A1; CN102844580B; DE112011101302A5; DE102011015281A1

Abstract

The invention relates to a clutch actuation system for actuating a dual clutch of a vehicle. Said clutch actuation system is composed of two part clutches which are actuated by two engagement bearings which are loaded by means of pressure and are arranged coaxially with respect to one another. Here, the first engagement bearing is connected to an annular piston which is arranged coaxially with respect to a transmission input shaft in a housing and is guided in the housing. The second engagement bearing is actuated by a piston which is arranged outside the housing and is operatively connected to the end of an actuating element. Said actuating element is configured at the other end as a fork, the two arms of which act diametrically on the second engagement bearing. According to the invention, at least one second piston is arranged in the housing radially outside the annular piston and acts on an actuating element within the surface of the latter.

Description

Clutch operating system

Technical field

The present invention relates to a kind of clutch operating system of double clutch that is used to handle Motor Vehicle with claim 1 preamble characteristic.

Background technique

Disclose according to the dissimilar and clutch operating system that is used to handle double clutch mode work.But the clutch operating system that for example exists mechanical type to handle has for example been described it and has been used for simple clutch in DE 196 22 707B4.The action principle of this control system is that the actuating linkage with engage bearings is being directed on the guide pipe on long distance.Said guide pipe is connected with the clutch bell jar at this regularly.Be used for the engaging process of controlled clutch, the engagement, levers that can be called as the lever that can swing is forced into said on the operator that is directed on the guide pipe.Through the guiding of said operator on guide pipe (load-bearing member), during engaging process, operator and engage bearings are provided positive motion in advance.This means, in order to adapt to double clutch, all dispose a sub-mating system that constitutes by engage bearings and the cylindrical actuating element that is connected with this engage bearings for each sub-clutch according to DE 10 2,009 011 809 A1.At this, said sub-mating system is inserted into each other around transmission input shaft with one heart, and each sub-mating system all is connected with corresponding sub-clutch formation effect through corresponding engage bearings.Can handle two engage bearings for two yokes of the engagement, levers of sub-mating system through corresponding configuration.Because each actuating element all has the joint element of two opposite disposed, therefore can be articulated and connected with the yoke end formation of re-spective engagement lever through said actuating element.

But this is based on the clutch operating system a lot of structure spaces of needs of lever system and the high accuracy of manufacturing of structural element, and this causes expensive manufacturing.

But disclose a kind of hydraulic operation by DE 10 2,009 034 401 A1 in addition and be used for the clutch release system of double clutch; It comprises two hydrostatic formulas and around the slave cylinder system and the housing that is received in transmission side of two transmission input shaft settings of dual-clutch transmission, but said slave cylinder system has at least one on-load pressure respectively and is used to handle the piston of corresponding friction clutch.At this, the slave cylinder system that is used to handle the second sub-clutch is made up of annular cylinder, annular piston guiding axially in said annular cylinder.On the contrary, the slave cylinder system that is used to handle the first sub-clutch is made up of a plurality of radially outers at said annular cylinder hydrostatic single cylinder that ground is provided with that on circumference, distributes, the single piston that is loaded uniform pressure guiding axially in said single cylinder.

This couple of CSC needs corresponding big radial structure space equally.

Above-mentioned two kinds of embodiments' of the clutch operating system that is used to handle double clutch combination has been described in FR 2 851 627 B1.At this, two cylinders comprise first cylinder and the annular flange of annular, and first cylinder and transmission input shaft are provided with coaxially, and said annular flange has cylindrical second cylinder that is parallel to first cylinder and is hinged on the fork on the annular flange by means of cup-and-ball joint.Said fork and its cup-and-ball joint end with said cylindrical cylinder diameter to interacting on the opposed point with respect to spin axis on the contrary and being supported on the cylinder piston with its other end.At this, it utilizes its middleware to be supported on the ring, and said ring is felt relieved on said spin axis and had the backstop that is used for the first sub-clutch.Thus, said fork disposes to said other cylinder and acts on the manipulation device of one of two clutches.

In this scheme, also need corresponding big structure space.

Summary of the invention

Therefore, task of the present invention is, advises a kind of clutch operating system that is used for double clutch, needs the minor structure space under the situation of its known conditions in utilizing clutch housing and can make at this with low costly.

Said task solves through the clutch operating system that is used for double clutch with claim 1 characteristic.Draw favourable configuration of the present invention by dependent claims.

In view of the above, the double clutch that comprises two sub-clutches of Motor Vehicle is by means of a kind of clutch operating system, and wherein, said two sub-clutches are handled through two engage bearings by means of pressure-loaded and setting coaxially to each other.At this, the annular piston that first engage bearings and is arranged in the housing with respect to transmission input shaft coaxially is connected, and said annular piston is directed in this housing.Second engage bearings by one be arranged on said outside piston handle, said piston is connected with the end formation effect of a regulating element.This regulating element is configured to fork on the other end, two arms of said fork are acting on the end opposite of diameter on said second engage bearings.According to the present invention, at least one said annular piston radially outer be arranged on together second piston in the said housing in the face internal action of a regulating element on this regulating element.The cross section of a piston can have different shapes at this.It can for example can also have the shape of kidney shape except cylindrical thus.In addition, can be at a plurality of pistons of annular piston outer installment that are arranged on central authorities in housing.The housing of clutch operating system and said at least one be arranged on the outside piston of said annular piston and can be made of plastics at this.

A favourable configuration of the present invention proposes; Said at least one constitute hollowly according to being configured on this position of this housing with respect to second piston of said annular piston partition distance in housing at radially outer, thereby can in this cavity, stroke measuring device be installed.In addition, this piston is made up of an outer piston, and said outer piston surrounds the identical inner carrier of a shape with a distance, thereby makes its side face each interval distance.Said distance between two pistons allows during giving system loads pressure to carry out on piston stroke about the straight line of inner carrier and outer piston the compensation of augular offset.

Particularly advantageously be, in said piston, insert a supporting member in tip side, the head that stretches out from this piston of said supporting member constitutes spherically.

In addition advantageously, the said regulating element head that is configured to lever and each supporting member acts on respectively on the dead slot of an arching in the face that is arranged on said lever.

Another favourable configuration of the present invention proposes; An end of said lever is provided with the dead slot of at least one arching in order to form hinge and the fork-shaped ground, the other end of said lever constitutes; Thereby make this end have two yokes, said yoke with correspondingly be connected being located at the engage bearings formation effect that is used on the operon clutch K1 on the end opposite of diameter.

In addition advantageously; For power hydraulically is delivered on second piston; The pressure chamber that between piston and housing, has an annular; Said pressure chamber is hidden by an antifouling covering device, and said antifouling covering device preferable configuration is the bellow type device, so as reasonably to dispose said at least one be arranged on the axial motion of the piston of said annular piston radially outer.

In addition, in order to form hinge with said lever, said clutch housing advantageously has at least one jut, and the dead slot of the arching on the shape of said jut and the said lever end constitutes on the contrary.

The advantage of this clutch operating system is that the manufacturing of member is simple and with low cost and its assembling is simple.In addition, clutch housing is together considered in the connection of clutch operating system through settling corresponding structure, thus the member that need not add.In addition, can abandon other machine assembly, this makes the structure space demand minimize.The importing that is used for the power of application piston is carried out by means of the pressure medium of underground for two unit in an advantageous manner uniformly.

Description of drawings

Below by means of embodiment and the present invention of accompanying drawing illustrated in detail.Wherein:

Fig. 1 is the sectional view of clutch operating system of the present invention;

Fig. 2 is another sectional view of the part of the clutch operating system among Fig. 1;

Fig. 3 is the perspective view of said clutch operating system;

Fig. 4 is the schematic representation of the regulating element of said clutch operating system about an engage bearings.

Fig. 5 and 6 is the regulating element of said clutch operating system other configuration possibilities about an engage bearings.

Embodiment

At a kind of clutch operating system 1 shown in Fig. 1, it is a kind of hybrid plan, comprises one and half hydraulic unit 1a and slave cylinder (CSC) 1b who is provided with around unshowned transmission input shaft with one heart.Said clutch operating system 1 is used to handle, unshowned double clutch that constitute by two sub-clutch K1 and K2.At this, said slave cylinder or CSC 1b are used to handle said sub-clutch K2 and correspondingly said half hydraulic unit 1a is used to handle said sub-clutch K1.

Said CSC 1b comprises that in known manner 3, one annular pistons 4 of a housing axially are directed to movingly in said housing.Said annular piston 4 is connected with an engage bearings 6 in the clutch side.For the pressure chamber 8 that between annular piston 4 and housing 3, forms is sealed, annular piston 4 is connected with a seal element 7 in tip side.Can find out that from this accompanying drawing 1 housing 3 of said clutch operating system 1 is connected with clutch housing 2.In addition, the hydraulic part of said half hydraulic unit 1a is integrated in the said housing 3 at the radially outer of said CSC 1b.Said hydraulic part comprises the piston 9 that can be handled by hydraulic type in this example equally, and this piston is in order to allow to adapt to two with respect to differing from and be divided into an outer piston 9a and an inner carrier 9b between the angle of straight line.At this, said piston 9b constitutes like this, makes it on the inner face of correspondingly configured housing 3, be directed to, and this housing has a cavity in order to receive one stroke measuring device 19.In addition, it has a seal element 12, and the sealing element seals the pressure chamber 14 between housing 3 and the piston 9.Piston 9a is supported on the side face of said inner carrier 9b (said inner carrier constitutes equally hollowly), thereby the distance that outer piston has with respect to inner carrier is Δ x and is led with a gap by piston 9b.In addition, in tip side one supporting member 11 is set in outer piston 9a, said supporting member is received in this outer piston with its foot.Thereby in order to reduce friction and to reduce wearing and tearing, the head of said supporting member constitutes spherically.Yet what also can consider is, the pressure chamber that a plurality of pistons is set and is sealed for the said hydraulic part of said half hydraulic unit 1a.At this, said piston can have the different cross-sectional areas shape, for example kidney shape.Said pressure chamber also can be placed in the identical zone, pressure chamber said housing 3 and present 8.If not enough, then also can be similar to present embodiment these pressure chambers are set individually this existing structure space.

Can find out from Fig. 1 that in addition the outer piston 9a that is connected with supporting member 11 is connected with a regulating element 13 formation effects, said regulating element is the remaining part of said half hydraulic unit 1a.This piston 9a in the face inside of regulating element to regulating element 13 loading forces.This regulating element 13 is configured to lever at this, and it finishes with two arm 13c in the form of tip side with fork.Obviously, opposed articulated

section

18a, 18b on the end opposite that is provided with on the engage bearings 5 at diameter wherein, can only see articulated section 18b in this view.Two yoke 13c are respectively equipped with support 13d, and said support is connected with said articulated

section

18a, 18b formation effect in order to handle said engage bearings 5.For this reason, said support 13d correspondingly be shaped with increase its in the articulated section 18a, the last supporting surface of 18b.For said lever 13 shapes are rested on the supporting member 11 sealedly, this lever 13 has the dead slot 13a of suitable arching.The other end of said lever 13 is in order to form the dead slot 13b that hinge equally also is provided with arching.The dead slot 13b of said arching surrounds a spherical jut 2a who constitutes at least in part, and said jut is arranged on the clutch housing 2.Since said jut 2a by the arching of said lever 13/spherical dead slot 13b surrounds, and therefore formed the hinge that is used for lever 13 or other supporting position.Thus, under the situation of piston 9 axial motions, said lever 13 is supported on two supporting positions---and be supported on the clutch housing 2 (hinge) at radially outer on the one hand, be supported on the engage bearings 5 that is used for operon clutch K1 on the other hand.Thus, between two strong points, carrying out power imports.

When handling unshowned clutch pedal; Thereby the clutch operating system 1 that is used to handle the whole hydraulic system of double clutch and is integrated in wherein is loaded power, thereby and the engage bearings 6 that not only is used for the engage bearings 5 of operon clutch K1 but also is used for operon clutch K2 also be loaded power.Because it is fully open by some documents and materials to be used to handle the functional mode of engage bearings 6, therefore no longer be described in greater detail and only describe the manipulation of this engage bearings.For this reason, the lever 13 that is bearing on the clutch housing 2 is loaded pressure owing to the axial motion of said piston 9.At this, this lever is in radially outer at supporting point and is supported on the clutch housing 2.Thereby the motion of motion through said lever 13 and the arm 13c (said arm has correspondingly configured support 13d) through this lever, thereby the said engage bearings 5 that is connected with fork support 13d formation effect is moved on axial direction and is handled said sub-clutch K1.In order to receive oscillating motion, articulated section 18a, the formation that 18b is different.For example in this accompanying drawing, can see the articulated section 18b that is configured to ball, constitute barrel-shapedly and have a protruding spheric profile and be arranged on articulated section 18a on the opposite side.

In order to prevent that dirt from entering into the pressure chamber 14 of said annular; Between supporting member 11 and piston 9, protective cover 10 is set; Said protective cover preferable configuration in this case is a bellows arrangement; So that handle the axial motion of said piston rightly, wherein, the power on the piston 9 is greater than the power on the engage bearings.But for this reason in the pressure chamber 14 required swept volume greater than the swept volume on the engage bearings 5.

(not shown in this accompanying drawing) is provided with so-called arrow with AN connector joint with being similar to traditional C C on the housing 3 of clutch operating system 1 in addition, through said AN connector joint to two pressure chambers, 8,14 supply pressure media so that handle said annular piston 4 and said piston 9.

Fig. 2 only illustrates the partial view of the clutch operating system 1 among Fig. 1, and wherein, this sectional drawing extends perpendicular to the sectional drawing among Fig. 1.For simplicity, keep identical reference character for identical member in the description of accompanying drawing below.

In this sectional drawing except housing 2 with 4 and the joining unit that in these two housings, is connected and engage

bearings

5 and 6 with housing can also see fixedly acceptance division 15, thereby interface unit, for example screw can be inserted in the said fixedly acceptance division and the housing 3 of said clutch operating system 1 is connected with the housing of said clutch.In addition, in this accompanying drawing, can see two yoke 13c with support 13d, said support is connected with 18b formation effect with said articulated section 18a.The articulated section 18a that is connected with engage bearings 5 that can see on the accompanying drawing left side is configured to the cylinder of protruding sphere and the articulated section 18b on the right is configured to ball (or ball) at this.Avoided the overdetermination of this system through the said different structure of these two

support

18a and 18b.

Fig. 3 illustrates the perspective view of clutch operating system 1, it comprise two joining units with

engage bearings

5 and 6 and lever 13 with and yoke 13c.Can see from said lever 13 dead slot 13a outstanding, protruding arch the resting on the said dead slot of said piston equally well at this invisible supporting member.From this accompanying drawing, also can draw two arrows 16,17 that are used to infeed pressure medium.

In Fig. 4, lever 13 schematically illustrates as single-piece.The lever 13 that this fork-shaped constitutes has yoke 13c, its in tip side in order to be connected to supporting position (jut) in the clutch housing 2 and to go up and in order to form hinge is provided with protruding arch in the both sides of unshowned housing acceptance division dead slot 13b.Between yoke 13c and said dead slot 13b, can see the dead slot 13a of said protruding arch, said dead slot has the spheroidal shape in this embodiment.In this accompanying drawing, the dead slot 13a of protruding arch preferably is arranged on the face of lever 13 symmetrically, and the arching of said dead slot finishes in two yokes 13 in the separation region of lever 13.Engage bearings 5 schematically shows as just ring surface at this.

Different with Fig. 4 is; Thereby Fig. 5 illustrate said protruding arch dead slot 13a other configuration with possibility is set and is illustrated in the other configuration possibility of unshowned half hydraulic unit in this accompanying drawing; Said half hydraulic unit is made up of two pistons in this example; Thereby in Fig. 5, need the dead slot 13a of two protruding arches, they are provided with about lever axis symmetrically.The spheric region of each dead slot 13a finishes on a yoke at this.Similar among all the other configurations of lever 13 and Fig. 4.

The lever 13 of the other configuration possibility of the dead slot 13a in Fig. 4 shown in Fig. 6 with protruding arch.The dead slot 13a of said protruding arch adapts to the shape of cross section of the unshowned piston of said half hydraulic unit equally at this.Said in this case piston has kidney shape.

The reference character table

1 clutch operating system

1a half hydraulic unit

1b slave cylinder/concentric slave cylinder (CSC)

2 clutch housings

The 2a jut

The housing of 3 clutch operating systems

4 pistons/annular piston

5 engage bearings

6 engage bearings

7 seal elements

8 pressure chambers

9 pistons

The 9a outer piston

The 9b inner carrier

10 dirt protective gear/bellowss

11 supporting members

12 seal elements

13 regulating elements/lever

The dead slot of the protruding arch of 13a

The dead slot of the protruding arch of 13b

The 13c fork end

The support of 13d yoke

14 pressure chambers

15 fixing acceptance divisions

16 pressure piping joints

17 pressure piping joints

The 18a articulated section

The 18b articulated section

19 are used for the acceptance division of stroke measuring device

Claims

1. clutch operating system (1) that is used to handle the double clutch of Motor Vehicle; Said double clutch is by two sub-clutch (K1; K2) form, said sub-clutch is handled through two engage bearings (5,6) by means of pressure-loaded and setting coaxially to each other; Wherein, The annular piston (4) that first engage bearings (6) and is arranged in the housing (3) with respect to transmission input shaft coaxially is connected, and said annular piston is directed in this housing, and said second engage bearings (5) is arranged on outside piston (9) manipulation of said housing (3) by one; Said piston is connected with the end formation effect of a regulating element; Wherein, this regulating element is configured to fork on the other end, and two arms of said fork are acting on the end opposite of diameter on said second engage bearings (4); It is characterized in that, at least one said annular piston (4) radially outer be arranged on together piston (9) in the said housing (3) in the face internal action of a regulating element (13) on this regulating element.

2. by the described clutch operating system of claim 1 (1); It is characterized in that; The said piston (9) that at least one constitutes hollowly is made up of an outer piston (9a), and said outer piston surrounds the identical inner carrier (9b) of a shape with a distance (Δ x).

3. by claim 1 or 2 described clutch operating systems (1), it is characterized in that, in said outer piston (9a), insert a supporting member (11) in tip side.

4. by claim 2 and 3 described clutch operating systems (1), it is characterized in that the head of at least one supporting member (11) constitutes spherically.

5. by the described clutch operating system of claim 1 (1), it is characterized in that said regulating element (13) is configured to lever.

6. by claim 1,3,4 and 5 described clutch operating systems (1), it is characterized in that the head of each supporting member (11) acts on respectively on the dead slot (13a) of an arching in the face that is arranged on said lever (13).

7. by the described clutch operating system of claim 5 (1); It is characterized in that; An end of said lever (13) is provided with the dead slot (13b) of at least one arching in order to form hinge and the fork-shaped ground, the other end of said lever (13) constitutes, thereby makes this end have two yokes (13c).

8. by the described clutch operating system of claim 1 (1), it is characterized in that, between piston (9) and housing (3), have the pressure chamber (14) of an annular.

9. by the described clutch operating system of claim 8 (1), it is characterized in that said pressure chamber (14) are hidden by an antifouling covering device (10).

10. by claim 1 and 7 described clutch operating systems (1); It is characterized in that; In order to form hinge with said lever (13); Said clutch housing (2) has at least one jut (2a), and the dead slot (13b) of the arching on the shape of said jut and said lever (13) end is opposite.