CN103867598A

CN103867598A - Actuating system with return spring combined in piston

Info

Publication number: CN103867598A
Application number: CN201310692531.7A
Authority: CN
Inventors: A·阿尔默特
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2012-12-17
Filing date: 2013-12-17
Publication date: 2014-06-18
Anticipated expiration: 2033-12-17
Also published as: CN103867598B; DE102013224473A1

Abstract

The actuating system (1) for a clutch has an annular cylinder, which is formed by a housing, where an annular piston is arranged in the cylinder. The annular piston is adjustable in the direction of an axial axis (6) in the cylinder, and divides the cylinder in a pressure chamber and in a fleeing oil chamber. The piston has a recess in the fleeing oil chamber, where a return spring is arranged in the recess so that the piston is adjustable by the return spring contrary to an operating direction.

Description

There is the operation system that is combined in the Returnning spring in piston

Technical field

The present invention relates to a kind of for being arranged in the operation system of the friction clutch between driver element and speed changer.

Background technique

This operation equipment for example has along guiding area, by the axially movable operation piece (piston) of operating element, and described operation piece acts on operating device, the lever of for example clutch or cup spring tongue.Described operating element can be for example the lever supporting pivotally, as clutch pedal.Described known, for example, for the operation system of wet-type dual-clutch, proved operational in engine compartment, be usually not enough for the space of this operation system.

Summary of the invention

Thereby task of the present invention is to solve at least in part the technical problem with reference to description of the Prior Art, especially provide a kind of compact especially, for the operation system of clutch.

This task is utilized according to the device of the feature of claim 1 and is solved.Other favourable technological scheme of the present invention provides in the dependent claims.The present invention points out, the feature of individually enumerating in dependent claims can be with arbitrarily, have the mode of technical meaning mutually to combine, and limit other technological scheme of the present invention.In addition, the feature of illustrating in the claims describes in detail and explains in specification, has wherein described other optimal technical scheme of the present invention.

Operation system for clutch according to the present invention has an annular cylinder, the cylinder of described annular consists of a housing, wherein, annular piston is arranged in described cylinder, described piston is removable in the direction of axial axis in cylinder, and described piston by cylinder be divided into pressure chamber and effusion oil pocket (

), wherein, described piston has at least one dead slot in described effusion oil pocket, in described at least one dead slot, arranges at least one Returnning spring, thus described piston can move against direction of operating by least one Returnning spring.

Here the operation system proposing is for joint and the disengaging of clutch, so that the transmission of torque interrupting from the driving motor of automobile to speed changer.Described clutch is the double clutch of double-clutch speed changer preferably.Described operation system has housing, the cylinder of described housing looping.The cylinder of described housing and/or especially annular is preferably roughly rotational symmetric and therefore limit an axial axis and orthogonally from the radial direction of this axis.Described housing is preferably made of metal and has 90 to the inner diameter of 100mm.In addition, described housing preferably has 125 to 135mm outer diameter.In addition, described housing has 20 to 40mm length in axial axis direction.The cylinder of described annular preferably has 15 to 35mm length and at the extended length in the radial direction with 12 to 18mm in axial axis direction.Annular piston is arranged in the annular cylinder consisting of housing, described annular piston in axial axis direction removable and by one especially annular hole stretch out from housing.By it, the motion in cylinder is applied on the operating device of described clutch described piston, for example lever and cup spring tongue.In addition, cylinder is divided into pressure chamber and effusion oil pocket by described piston.High pressure oil can be transported in pressure chamber by pressure oil supply portion, thereby described piston can hydraulically move in cylinder in axial axis direction on direction of operating.Described piston also preferably has pressure chamber's Sealing, and they make described pressure chamber seal with respect to described effusion oil pocket.Pressure chamber's Sealing can be for example one or more seal rings.In addition, described piston has at least one dead slot in the region of described effusion oil pocket, and at least one Returnning spring is arranged in described dead slot, thereby described piston can move against direction of operating by least one Returnning spring.Described dead slot in axial axis direction, preferably extend 11 to 31mm and on the circumferencial direction of described piston (respectively) extension preferably 8 to 15mm.Described at least one Returnning spring preferably has the rigidity of 5 to 10N/mm (every millimeter of ox).Described at least one dead slot refers to the material breach in described piston, thereby Returnning spring can be arranged in material breach.If described piston is pressed from described housing on direction of operating by oil being incorporated in pressure chamber, described Returnning spring is compacted, thereby once the pressure of oil reduces in pressure chamber, described Returnning spring makes described piston reset against described direction of operating.

According to one embodiment of the invention, described at least one dead slot is extending through described piston in the radial direction.Thus, described at least one Returnning spring can be arranged in described at least one dead slot especially simply.

Preferably, described piston has T-shaped in the axial direction cross section, and it has radial zone and axial region.Described radial zone is passing completely through cylinder extension in the radial direction substantially.

Particularly advantageously, described operation system has multiple dead slots, and they distribute and arrange on the circumferencial direction of described piston.Thus, described piston can move against described direction of operating especially equably by described at least one Returnning spring in annular cylinder.

Also advantageously, described at least one Returnning spring utilizes first end to support and lean against on described housing in the direction of axial axis.Thus, described at least one Returnning spring can especially easily make described piston move against described direction of operating.

Preferably, described effusion oil pocket has a looping pit in axial axis direction, and described piston extends through described looping pit at least in part.

Preferably, described at least one Returnning spring is helical spring.

Particularly advantageously, described at least one Returnning spring is arranged at least one retainer.By described at least one retainer, described at least one Returnning spring can be positioned at least one dead slot of described piston reliably.Preferably, described retainer is made up of an inner retainer and an outside retainer.

According on the other hand, the present invention also proposes a kind of clutch for automotive transmission, and described clutch has at least one operations according to the instant invention system.In this respect with reference to the explanation to described operation system.

Described operation system is preferred for being preferably in the wet-type dual-clutch of plate clutch.

Further, the present invention proposes to have the automobile of drivetrain, and this drivetrain has the speed changer with good grounds clutch of the present invention.In this respect with reference to the explanation to described clutch and especially operation system.

Brief description of the drawings

Explain in detail the present invention and technical field below with reference to accompanying drawing.Be pointed out that, accompanying drawing illustrates particularly preferred embodiment of the present invention, but, the invention is not restricted to these particularly preferred embodiments.Accompanying drawing is schematically illustrated:

Fig. 1 illustrates the automobile with speed changer in axial axis direction, and described speed changer has operation system;

Fig. 2 illustrates the operation system of Fig. 1 with longitudinal section;

Fig. 3 illustrates the operation system of Fig. 1 and 2 with three-dimensional cutaway view;

Fig. 4 illustrates according to the detail drawing of the annular cylinder of the operation system of Fig. 1-3 with longitudinal section;

Fig. 5 illustrates annular piston with stereogram; With

Fig. 6 illustrates the annular piston with Returnning spring of Fig. 5.

Embodiment

Fig. 1 illustrate have speed changer 23 and clutch 2 the schematic diagram of automobile 22, wherein, clutch 2 can be coupled and de-coupling by operation system 1.Operation system 1 has toroidal shell 4, the cylinder 3 of toroidal shell 4 loopings.So operation system 1 has axial axis 6, it extends perpendicular to plan in Fig. 1.

Fig. 2 illustrates by the longitudinal section of the operation system 1 of Fig. 1.The cylinder 3 of housing 4 loopings, piston 5 is removable in annular cylinder 3 in the direction of axial axis 6.Housing 4 has inner diameter 24 and outer diameter 25 in the region of annular cylinder 3 in radial direction 12.In addition, housing 4 has length 26 in the region of annular cylinder 3 in the direction of longitudinal axis 6.

Fig. 3 illustrates the stereogram in the longitudinal section of operation system 1 Fig. 2, that have annular cylinder 3.

Fig. 4 illustrates the enlarged detail of the annular cylinder 3 of operation system 1.The cylinder 3 of annular consists of housing 4 in this embodiment, and housing 4 is made up of enclosure interior part 32 and outside part 33.And enclosure interior part 32 has the oily supply portion of effusion.And the cylinder 3 of annular is by covering 29 sealings, lid 29 has oil-in 35.Piston 5 is arranged in annular cylinder 3 inside.Piston 5 has radial zone 14, and radial zone 14 substantially passes completely through annular cylinder 3 and extends in radial direction 12.In addition, piston 5 has axial region 15, and axial region 15 extends through the looping pit 18 of housing 4 from annular cylinder 3.Annular cylinder 3 is divided into pressure chamber 7 and effusion oil pocket 8 by the radial zone 14 of piston 5.By pressure oil supply portion 28 and by entrance 35, oil can be incorporated in pressure chamber 7, thus piston 5 can be in the direction of direction of operating 11, to be especially parallel to axial axis 6(not shown here) direction ground mobile.In addition, the radial zone 14 of piston 5 has Liang Ge pressure chamber Sealing 30, and pressure chamber 7 utilizes pressure chamber's Sealing 30 to seal with respect to effusion oil pocket 8.In addition, effusion oil pocket Sealing 34 is arranged in the region of looping pit 18, thereby the oil of not overflowing can be overflowed from the hole of effusion oil pocket 8 18.By radial zone 14 and axial region 15, piston 5 has T shape cross section 13 in unshowned axial axis 6 directions here.In addition, the axial region 15 of piston 5 has dead slot 9, and Returnning spring 10 is arranged in dead slot 9.In embodiment shown here, Returnning spring is 10 to be helical springs.Returnning spring 10 has first end 17 and the second end 27.Returnning spring 10 utilizes first end 17 to be pressed on housing 4, utilizes the second end 27 to be pressed on radial zone 14, thereby piston 5 can move against direction of operating 11 in annular cylinder 3.For Returnning spring 10 is remained on reliably in the dead slot 9 of piston 5 in radial direction 12, described Returnning spring is arranged in retainer 19, and retainer 19 is made up of inner retainer 20 and outside retainer 21.

Fig. 5 goes out piston 5 with three-dimensional icon, and piston 5 has radial zone 14 and axial region 15, and axial region 15 has multiple dead slots 9 that distribute on circumferencial direction 16 and arrange.

Fig. 6 illustrates the zoomed-in view of piston 5, and piston 5 has the Returnning spring 10 being arranged in dead slot 9, and Returnning spring 10 is fixing by the retainer 19 being made up of inner retainer 20 and outside retainer 21.

Operating system features described here is special compact structure.

Reference numerals list

1 operation system

2 clutches

The cylinder of 3 annulars

4 housings

5 pistons

6 axial axis

7 pressure chambers

8 effusion oil pockets

9 dead slots

10 Returnning springs

11 direction of operating

12 radial direction

13 cross sections

14 radial zones

15 axial region

16 circumferencial directions

17 first ends

18 holes

19 retainers

20 inner retainers

21 outside retainers

22 automobiles

23 speed changers

24 inner diameters

25 outer diameters

26 length

27 the second ends

28 pressure oil supply portions

29 lids

30 pressure chamber's Sealings

The oily supply portion of 31 effusion

32 enclosure interior parts

33 outside parts

34 effusion oil pocket Sealings

35 entrances

Claims

1. for clutch (2) operation system (1), there is the annular cylinder (3) forming by housing (4), wherein, annular piston (5) is arranged in described cylinder (3), described piston (5) in described cylinder (3) in the direction of axial axis (6) removable and described piston (5) described cylinder (3) is divided into pressure chamber (7) and effusion oil pocket (8), it is characterized in that, described piston (5) has at least one dead slot (9) in described effusion oil pocket (8), at least one Returnning spring (10) is arranged in described at least one dead slot (9), thereby described piston (5) is removable against direction of operating (11) by described at least one Returnning spring (10).

2. operation system according to claim 1 (1), wherein, described at least one dead slot (9) is extending through described piston (5) in the radial direction.

3. according to operation system in any one of the preceding claims wherein (1), wherein, described piston (5) has cross section T-shaped in the direction of axial axis (6), and it has radial zone (14) and axial region (15).

4. according to operation system in any one of the preceding claims wherein (1), have multiple dead slots (9), they distribute and arrange on the circumferencial direction of described piston (5).

5. according to operation system in any one of the preceding claims wherein (1), wherein, described at least one Returnning spring (10) utilizes first end (17) to lean against on described housing (4) at the direction upper support of described axial axis (6).

6. according to operation system in any one of the preceding claims wherein (1), wherein, described effusion oil pocket (8) has looping pit (18) in the direction of axial axis (6), and described piston (5) extends through described looping pit (18) at least in part.

7. according to operation system in any one of the preceding claims wherein (1), wherein, described at least one Returnning spring (10) is helical spring.

8. according to operation system in any one of the preceding claims wherein (1), wherein, described at least one Returnning spring (10) is arranged at least one retainer (19).

9. for the clutch (2) of the speed changer (23) of automobile (22), there is at least one according to the operation system described in any one in claim 1 to 8 (1).

10. automobile (22), it has drivetrain, and described drivetrain comprises the speed changer (23) with clutch according to claim 9 (2).