DE102014216929A1 - Actuator for a coupling with a multi-part rotor and a contoured wire spring - Google Patents

Abstract

The invention relates to an actuator for a clutch with a rotor, on the radial outer side of a Wälzkörperumlaufleiteinrichtung is present, which forms an outwardly open channel, wherein within the channel a plurality of rolling elements is guided and wherein the rolling elements in a radially inwardly projecting Guiding device of a carriage are guided, wherein within a portion of the channel at least one contoured wire profile is used.

Description

The invention relates to an actuator for a clutch, with a rotor, on the radial outer side of a Wälzkörperumlaufleiteinrichtung is present, which forms an outwardly open channel, wherein within the channel a plurality of rolling elements is guided, and the plurality of rolling elements in one after radially inwardly projecting counterguide of a carriage is guided.

Wälzkörperumlaufleiteinrichtungen are part of a Wälzkörpergetriebetriebs, such as a ball screw (KGT).

Such actuators can be used in clutches, such as dual clutches, especially in motor vehicles, such as cars, trucks or other commercial vehicles. They can operate dry or wet couplings and be part of an electrical central release (EZA).

From the state of the art, such as the older, but not previously published DE 10 2011 102 222.1 is an actuator for a clutch with a stator, a rotatable with respect to the stator rotatable rotor device and a respect. The rotor device in the axial direction limited movable carriage device known.

Between the rotor device and the carriage device, a Wälzkörpergewindetrieb is provided with a plurality of turns and a substantially annular Wälzkörperumlauf with rolling elements. The substantially annular Wälzkörperumlauf has a track change region formed in such a way that rolling elements run in the circumferential direction before the lane change region between a first and a second turn, and rolling elements in the circumferential direction after the lane change region between the second and a third turn run.

From the older but not pre-published DE 10 2012 205 452.9 Furthermore, a further actuating device is known. It discloses an actuating device for a clutch with a stator device, a rotor device rotatable with respect to the stator device and a slide device limited in axial direction with respect to the rotor device, wherein between the rotor device and the carriage device a rolling element screw having at least three turns and a substantially annular Wälzkörperumlauf is provided with rolling elements, wherein the substantially annular Wälzkörperumlauf has a track change region formed such that rolling elements run in the circumferential direction before the lane change area between a first and a second turn, and rolling elements in the circumferential direction after the lane change region between the second and a third turn run wherein the substantially annular Wälzkörperumlauf is formed from at least two components.

The content of this older application should be considered as integrated here with respect to the geometric and material design.

In particular, the use of the actuating device for the clutch of a motor vehicle is already described above. In particular, such a clutch is a friction clutch, as provided between the internal combustion engine and / or an electric motor and the transmission of a motor vehicle for the gear change. In particular, the actuating device may be provided in hybrid vehicles. The coupling may be formed on the one hand as a single clutch, but may also be designed as a multiple clutch, in particular as a double clutch. In a double clutch preferably two actuators of the aforementioned type are provided.

Furthermore, the coupling can be designed both as a dry clutch and as a wet clutch. The clutch may be on the one hand to an engaged in the non-actuated state, that is normal-engaged clutch, or on the other hand, a disengaged in the non-actuated state, that is normal-disengaged clutch. In a normally-engaged clutch, the lever element on which the actuator acts, is usually designed as a plate spring, while in a normally-disengaged clutch, the lever element on which the actuator acts, is usually designed as a lever spring. Further, the clutch on the one hand as a depressed clutch, that is, as a clutch in which the actuating device exerts a pressing force on the lever member, or on the other hand as a drawn clutch, that is, as a clutch, in which the actuating device exerts a pulling force on the lever member is formed be.

The stator device and the rotatable rotor device with respect to the stator device preferably form an electric motor. The electric motor is preferably designed as a three-phase motor in which magnets, more specifically permanent magnets, rotor side and alternately energizable windings are provided on the stator side. According to a preferred embodiment of the electric motor is designed as an external rotor, that is, in its interior on the stator, which is surrounded by the annular rotatable rotor means. However, the electric motor can also be designed as an internal rotor.

The actuating device can be supplied with current via a power supply and is preferably mounted in the drive train of the motor vehicle such that it must be energized exclusively for engagement and disengagement of the clutch. Through the Wälzkörpergewindetrieb, which is arranged in the effective direction between the rotor means and the carriage means, a rotational movement of the rotor means is converted into a translational movement of the carriage means. The Wälzkörpergewindetrieb is preferably self-locking.

About a release bearing, which is for example designed as angular contact ball bearings, but can also be designed as a tapered roller bearing, needle bearing or sliding bearing, the carriage means can act directly or indirectly on the lever member of the clutch.

For example, the stator can be non-rotatably formed with a support portion, in particular with a housing support, so that the power supply to the stator by means of cables and without rotary feedthrough or inductive coupling is possible. In the radial direction within the stator, the input shaft of the clutch or the output shaft of the internal combustion engine extends. The input shaft is rotatably mounted with respect to the stator device or the carrier section.

However, it is also possible that the stator is rotatably mounted on the input shaft of the clutch, that is, rotates with the speed of the internal combustion engine. In this case, a rotary feedthrough or an inductive coupling for energizing the actuator is required. The energization of the actuator in one direction produces an increased rotational speed of the rotor means compared to the input speed of the driveline, thereby disengaging the clutch. The energization of the actuator in the other direction produces a reduced rotational speed of the rotor device compared to the input rotational speed of the drive train, whereby the clutch is engaged. Therefore, the disengagement operation of the clutch can be initiated via an acceleration of the rotor device, while the engagement of the clutch is initiated via a deceleration of the rotor device. Likewise, it is also possible that the disengagement process of the clutch is initiated by a braking of the rotor device, while the engagement of the clutch is initiated by an acceleration of the rotor device.

It is a Wälzkörpergewindetrieb disclosed with an outer sleeve, in which a form spring is inserted, which has a plurality of turns. The form spring is formed in particular from a helically wound spring wire, wherein in a preferred embodiment, the coiled spring wire is contoured, that is provided in the axial direction on both sides with a contact contour, which is separated by an intervening comb. The adjacent contact contours of two successive turns of the form spring form part of the surface geometry of the rolling element, so that the respective rolling element can be guided in the axial direction in a direction extending in the circumferential direction track between two adjacent turns of the form spring.

The outer sleeve is closed by a lid for supporting the shaped spring, which is screwed to the outer sleeve by a plurality of circumferentially distributed arranged screws. Between the cover and the outer sleeve, a shim is preferably provided. Shims exist in different thicknesses to ensure the operation of the actuator on the one hand, the widest possible backlash of Wälzkörpergewindetriebs in the axial direction and on the other hand, the ease of movement and in particular the freedom of Klemmz Wälzkörpergewindetriebs. By means of the appropriate shim is therefore the axial length of the space in which the helical shape spring is arranged to adjust exactly when assembling the actuator.

The space in which the shape spring is arranged, is delimited in the axial direction on both sides by a respective seal to the outside. Each of the two seals, one of which is provided on the outer sleeve side and the other cover side, is slidable, each with an inner sleeve in abutment to allow the translational movement of the carriage means. The space between the two seals is preferably filled with grease, that is designed as a grease space in order to minimize the friction of the Wälzkörpergewindetriebs and to prevent jamming of the rolling elements.

In addition to the rolling element-filled annular rolling element circulation, the rotor device has a yoke. The yoke of the rotor device is rotatably supported via a support bearing, in particular via a radial bearing, indirectly or directly on the stator device.

The yoke and the annular Wälzkörperumlauf are preferably formed as separate components. However, it is also possible that one of the two components of the Wälzkörperumlaufs is formed integrally with the yoke.

When both components of the annular Wälzkörperumlaufs are formed separately from the yoke, it is advantageous if the yoke as a two-part yoke with a first yoke sleeve and a second Yoke sleeve is formed. The two annular components of the Wälzkörperumlaufs are rotatably mounted on the first yoke sleeve. The second yoke sleeve is also rotatably mounted on the first yoke sleeve and abuts in the axial direction preferably on one of the two components of the Wälzkörperumlaufs. In particular, it is advantageous if the support bearing is provided between a collar of the second yoke sleeve and a collar of the first yoke sleeve, by means of which the yoke is supported on the stator.

For non-rotatable connection or the components of the annular Wälzkörperumlaufs can be materially connected, for example by welding, soldering or gluing, with the yoke or the first yoke sleeve. Alternatively or additionally, the one or more components of the annular Wälzkörperumlaufs can be positively connected, for example by means of a spline or a feather key, with the yoke or the first yoke sleeve. Alternatively or additionally, the one or more components of the annular Wälzkörperumlaufs non-positively, for example by pressing or shrinking, be connected to the yoke or the first yoke sleeve.

It is possible that two components of the Wälzkörperumlaufs are formed as rings. The two rings preferably have the same diameter. Each of the two rings preferably has a part of the lane change area.

It is possible that between the two components of the Wälzkörperumlaufs a parting plane is defined, which extends substantially in the radial direction. "Substantially in the radial direction" in this context means that the parting plane can also be inclined slightly to a radial plane from which the axis of rotation of the actuating device is pierced vertically. Furthermore, the parting plane can be defined by a screw contour and in particular have a jump section in the lane change region of the rolling element circulation.

The actuator may be part of an electrical Zentralausrückers and can be used as an actuator for axial actuation.

In the current state of the art, rolling element raceways, such as ball raceways, are produced with a certain pitch by machining. The ball races are pre-milled, hardened, ground and deburred. A ball deflection is currently intended as a plastic insert.

Unfortunately, making an inner ball track takes a considerable amount of time. The necessary pre-milling with oversize means that a suitable gear must be sought for grinding. Would be sanded into the solid material, more time would be needed.

To ball deflectors must also be made a suitable recording, which is also time-consuming and costly. But this also causes a deformation in a heat treatment, which is undesirable. Furthermore, any necessary oversize must be machined again. Furthermore, conventional solutions tend to imbalances in the overall system. The machined steel is replaced by plastic from the deflection.

In order to integrate a support bearing in the rotor, this is in a conventional manner with its bearing outer ring made in one piece with the rotor, which is disadvantageous for the assembly.

It is also complicated to install permanent magnets within the rotor, since then the bearing surfaces of the rotor must be cleaned after the support bearing assembly. This causes increased costs.

Unfortunately, a conventional solid rotor manufacturing, which forms the outer bearing shell of the support bearing, a high inertia. However, this massive design results from production-related minimum wall thicknesses and material-related magnetic flux optimization requirements.

However, it is precisely the object of the present invention to eliminate the disadvantages of the prior art and to achieve cost optimization while reducing weight and inertia. Also, the support bearing should be mounted separately.

This is achieved in a generic actuator according to the invention in that within a portion of the channel at least one contoured wire profile is used.

Advantageous Ausführungsfomen are claimed in the subclaims and are explained in more detail below.

So it is advantageous if the wire profile has a Wälzkörperanlagefläche to come into contact with the rolling elements and / or a Leiteinrichtungsanlagefläche, preferably on the side facing away from the Wälzkörperanlagefläche, come into contact with the Wälzkörperumlaufleiteinrichtung. The wire profile can then be easily inserted into the channel and positively, positively and / or materially secured to the Wälzkörperumlaufleiteinrichtung. A wear-reducing construction is then the result.

In order to further reduce wear on both sides of the channels, it is advantageous if two preferably separate wire profiles are inserted into the channel and a guide track for the rolling elements is formed therebetween. In the guideway then run the rolling elements, which may be spherical, roller-like, barrel-like or needle-like, as possible from play.

If the Wälzkörperumlaufleiteinrichtung is divided along a transverse plane into two separate rings, so the production can be simplified. A transversal plane is understood to mean a plane which is perpendicular to an axis of rotation of the rotor or the actuating device. It could also be called a radial plane. It is also possible that the Wälzkörperumlaufleiteinrichtung is subdivided in a plane employed to the transverse plane in two separate rings. The rotation axis would then be skewed on this plane.

It is advantageous if the Wälzkörperumlaufleiteinrichtung is fitted between a first yoke sleeve and a second yoke sleeve. As a result, the position of the Wälzkörperumlaufleiteinrichtung is precisely determined.

It is also advantageous if on the outside of the Wälzkörperumlaufleiteinrichtung projections are present, which engage in opposite recesses of the corresponding first or second yoke sleeve. In this way, a rotationally fixed connection between the Wälzkörperumlaufleiteinrichtung and the yoke sleeves or can be achieved.

It is also expedient if the Wälzkörperumlaufleiteinrichtung is used in a connection to this radially outside. The connection sleeve can then, for example, be pressed into the rolling element circulation guide device. A non-rotatable and / or in the direction of the axis of rotation translational connection is thus easily accessible.

It is also advantageous if the rotor u. a. composed of the two Jochhülsen and the connecting sleeve and any Pemanentmagneten, and within the second yoke sleeve, as well as axially on a collar of the connecting sleeve a support bearing, such as a roller bearing, such as a ball bearing is arranged in the manner of an angular contact ball bearing or a double ball bearing.

Further, it is advantageous if a release bearing, such as a rolling bearing, is fitted on the carriage, for example in the manner of a ball bearing, such as an angular contact ball bearing, and the release bearing acts on a lever spring.

An advantageous embodiment is also characterized in that the wire profile is formed in the manner of a preferably circular or spirally bent spring.

The deflection of the rolling elements of the Wälzkörpertriebs is also simplified if the wire profile has a 360 ° rotation minus a range for a predetermined deflection angle.

It is also advantageous if the rings made of plastic, the wire profiles of a metal alloy and / or the Jochhülsen and the connecting sleeve of non-cutting formed sheets are constructed or consist of these materials / material mixtures. The wire profile may, for example, consist of spring steel and the Joch sleeves be constructed of steel sheets. The Jochhülsen and the connecting sleeves can have the same wall thickness and consist of the same material.

In other words, it is proposed, at least in a section of the ball track contoured wire profiles, approximately comparable to a form spring to provide, so that in this area an uncontoured groove or groove, in particular forming technology can be formed and a subsequent machining of the groove or groove in this area can be omitted. By the Umformtechnische production without subsequent machining machining costs can be reduced.

The production of a spindle-side or a motor-side ball raceway of an electrical Zentralausrückers is simplified by the ball track is separated along its radial plane in two parts. Both parts contain, viewed in a lateral sectional view, an approximately 90 ° comprehensive partial profile of the ball groove. If both parts are assembled, the two sub-profiles complement each other to form a U-shaped ball groove, which is formed by the Wälzkörperumlaufleiteinrichtung. Due to the division, both partial profiles can be produced inexpensively tool falling, in particular punched.

Although it is advantageous if the ball track is divided along its radial plane, but the yoke or the spindle or nut can also be integrally formed. It should be noted that the principle of Wälzkörperumlaufleiteinrichtung with an outwardly open channel and a radially inwardly projecting counter-guide can also be reversed. Thus, the counter-guide device protrude radially outward, whereas then the Wälzkörperumlaufleiteinrichtung has a radially inwardly opened groove. The active principle can be reversed.

The Wälzkörperumlaufleiteinrichtung can use rolling elements, which are designed as balls. It is then created by the channel a ball track. For the outer geometry of the ball track a form spring is used. If you wrap the same shaped spring profile inside, this can serve as an inner race.

The replacement of a massive inner raceway by two equal parts / equal parts is desired. A plastic deflector with integrated spring receiver, which is centered on metal sleeves, is used.

The construction with sheet metal sleeves allows installation to a pre-assembled bearing / support bearing, with no contamination during installation occur. The use of low-carbon material, in particular to increase the magnetic flux, the reduction of inertia and the elimination of cutting reworking is a desired consequence.

The wire profile used can have chamfers at the beginning and end, or the inlet and outlet can be provided with bevels, the cutting is done by embossing to make the transition to the deflection on.

The free inner / outer diameter of the spring may be slightly smaller than the seat, so that the form spring at the deflection up to the rolling elements, such as the ball, can fill the space completely. This also allows a separate pre-assembly of the wire profile and a separate diverter. The Wälzkörperumlaufleiteinrichtung receiving the wire profile may have two (each other) symmetrical rings, which are formed as equal parts. This can increase the number of pieces and better exploit the tool with which the rings are made. It can also be held against rotation and positioning on the rings. Furthermore, an end stop for preventing rotation of the spring may be formed on the ring made of plastic.

The rings may have flaps. For small pitches, the flaps can be designed so that the wire is positioned by the respective counterpart part during assembly. In this case, no slope is necessary in the production of wire profiles.

The Jochhülsen and connecting sleeves can be formed as sheet metal sleeves. With the use of deep-drawing steel, the insertion of a pre-mountable bearing / support bearing is made possible. The material of these sleeves is low in carbon and improves the magnetic flux in the rotor.

The Joch sleeves can be connected by pins and / or noses with the rings. Other means to increase friction between the elements can be used. For example, contours, grains and coatings are ideal.

The axial force is intercepted directly via a board. A connection between the respective sleeves can be achieved as required by material, positive and / or non-positive connection types. It offers press seats, radial riveting, spot welding or laser welding.

The support bearing can be preassembled and soiling caused by greases can be avoided. The connection sleeve can be cleaned prior to assembly and immediately after the assembly of the assembly with the connection of the magnets to be mounted on the rotor, namely on the connection sleeve, in particular its inside, can be started.

In this way, large quantities per year can be produced and a cost reduction of 30 to 45% can be achieved. There is no need for machining, no heat treatment of the parts is more necessary and compact solutions that are lighter / lighter, are the result. It can be used a variety of identical parts for assembly. The realization of pre-assembled subassemblies is achievable. A pair of parts for Druckwinkelbewältigung is possible.

The invention will be explained in more detail with the aid of a drawing, in which a first embodiment is shown in more detail. Show it:

1 a longitudinal section through a portion of an actuator according to the invention, as installed in a coupling,

2 a perspective view of the outside of a through the Wälzkörperumlaufleiteinrichtung the actuator from 1 formed rings,

3 a singular, perspective representation of a wire profile inserted into the channel,

4 a perspective view of a single ring of Wälzkörperumlaufleiteinrichtung,

5 the assembly of two rings and two wire profiles to Wälzkörperumlaufleiteinrichtung,

6 an enlarged view of the in two yokes on a connecting sleeve located Wälzkörperumlaufleiteinrichtung with inserted wire profiles,

7 the Wälzkörperumlaufleiteinrichtung with two Jochhülsen, a connecting sleeve and a support bearing in a longitudinal sectional view,

8th a perspective view of the components 7 , and

9 and 10 the force curve through the in 1 illustrated actuating device.

The figures are merely schematic in nature and are only for the understanding of the invention. The same elements are given the same reference numerals.

Features that are not marked in the present description as essential to the invention are to be understood as optional. Therefore, the following description also relates to further embodiments of an actuator 1 which have sub-combinations of the features to be explained below. Likewise, the following description relates to the combination or assembly of the actuator 1 with a clutch 2 that is a lever element 3 starts. It also relates to a drive train of a motor vehicle.

The coupling 2 is rotatably mounted about a rotational axis Z and has at least one pressure plate, not shown, at least one counter-pressure plate, not shown, and at least one in the axial direction A of the coupling 2 between the pressure plate and the counter-pressure plate arranged, not shown, clutch disc. The counter-pressure plate is connected to a housing component of the coupling 2 , in particular a clutch cover, firmly connected, in particular screwed. The pressure plate is rotatably mounted in the clutch housing, in particular within the clutch cover and limited in the axial direction A displaced.

In particular, the pressure plate is non-rotatably mounted in the clutch housing by means of a plurality of leaf springs, not shown, and biased away from the counter-pressure plate. In addition, the clutch points 2 a lever element 3 on top of that, for a normally-engaged clutch 2 as a plate spring and for a normally-disengaged clutch 2 can be designed as a lever spring. The lever element 3 is supported on the housing side and by the actuator 1 actuated. The housing-side support can be done for example by a coupling plate attached to the bearing unit, not shown, through which the lever element 3 tilted is hung. For this purpose, the bearing unit, for example, two spaced in the axial direction A wire rings, between which the lever element 3 in the radial direction R of the coupling 2 extends. About lever tips, in the radial direction R on the inside of the preferably substantially ring-shaped lever member 3 are arranged, is the lever element 3 through the actuator 1 actuated. For a normally-engaged clutch 2 outweighs the effective force of the trained as a plate spring lever element 3 the opposing force of the leaf springs, while in a normally-disengaged clutch 2 the opposing force of the leaf springs, the effective force of the lever spring designed as a lever element 3 predominates. Accordingly, an operation of the diaphragm spring of the normally-engaged clutch 2 through the actuator 1 for disengaging the clutch 2 by tilting or snapping the plate spring, that is, for lifting the pressure plate and for removing the pressure plate of the counter-pressure plate, while an actuation of the lever spring in a normally-disengaged clutch 2 through the actuator 1 for engaging the clutch 2 by tilting the lever spring leads.

With engaged clutch 2 is a torque from the input side of the clutch 2 , For example, by a dual-mass flywheel or an internal combustion engine or an electric motor, via the clutch housing and both the counter-pressure plate and the pressure plate, which are both rotatably connected to the clutch housing, in particular the clutch cover, frictionally transmitted to the clutch disc. From the clutch disc, which is frictionally clamped between the counter-pressure plate and the pressure plate, the torque to the output side of the clutch 2 transmitted, for example, to an input shaft of a transmission.

Since due to the frictional engagement both the friction linings of the clutch disc, and to a lesser extent the friction surface of the counter-pressure plate and the pressure plate are subject to wear, must over the life of the clutch 2 the pressure plate are moved closer and closer to the counter-pressure plate to compensate for the decrease in the thickness of the friction linings and the strength of the friction surfaces in the axial direction A and establish the frictional engagement or the clutch 2 to be able to get in. This is in the clutch 2 For example, a non-illustrated, force-based or path-based wear adjustment can be used.

The actuator 1 on the lever element 3 the coupling acts, has a stator, which is not shown and with respect to the stator / the stator rotatable rotor 4 which may also be referred to as a rotor device. The stator may be non-rotatably formed with a support portion, in particular with a housing support.

Preferably, the stator and the rotor form 4 an electric motor, in particular a three-phase motor. For this purpose, the stator is provided with a power supply to generate a changing electromagnetic field in not shown, stator-side coils. The rotor 4 has magnets for magnetic interaction with the stator-side electromagnet, namely permanent magnets.

Preferably, the electric motor is designed as a so-called external rotor, ie the stator is in the radial direction R of the actuating device 1 or the clutch 2 inside the rotor 4 arranged. However, it is also possible to form the electric motor as an internal rotor, ie the stator in the radial direction R outside of the rotor 4 to arrange. This arrangement will not be discussed further.

On the radial outside 5 of the rotor 4 , in particular a connecting sleeve 6 , is a Wälzkörperumlaufleiteinrichtung 7 educated. The Wälzkörperumlaufleiteinrichtung 7 has two rings 8th and 9 on. Together, the rings form 8th and 9 a gutter 10 out. The gutter 10 is made of wire profiles on both sides 11 limited. Between the wire profiles 11 is thereby formed a guideway, on / in the rolling elements 12 namely balls 13 can roll off. The rolling elements 12 also be in a counterguide facility 14 guided.

The counterguide 14 is on a sled 15 established. On the radial outside of the carriage 15 is a release bearing 16 arranged over a sleeve 17 on the lever element 3 can act. Upon actuation of the lever element 2 will the clutch 2 on or off. The counterguide 14 is through a shaped spring 18 formed, which has different turns. The balls 13 run within / between the turns.

The Wälzkörperumlaufleiteinrichtung 7 is between a first yoke sleeve 19 and a second yoke sleeve 20 clamped or fitted. Radially inside the second yoke sleeve 20 is a support camp 21 , built in the manner of a rolling bearing. The support bearing 21 can be designed as double deep groove ball bearings.

magnets 22 , in particular permanent magnets 23 are at the connection sleeve 6 fastened on the inside.

In 2 are two inserted wire profiles 11 in the gutter 10 to recognize the a deflection section 24 in which no wire profiles 11 are included. At this point, a corresponding rolling elements 12 transferred from a first transverse plane in a second transverse plane. On the axial outer sides, of the respective ring 8th or 9 away, the respective ring points 9 or 8th projections 25 on, in the opposite recesses 26 to grab. In this way a Drehunverschieblichkeit is caused.

One of the two unclosed, circular section curved wire profiles 11 are shown.

The ring 9 in 4 forms on his right, the ring 8th facing side, one half of the gutter 10 out. The ring 8th trains the other half.

In 5 is a folded Wälzkörperanlagefläche 27 at rolling elements, not shown 12 at. Outer Leiteinrichtungsanlageflächen 28 lie on contact surfaces 29 the gutters 8th and 9 at. The contact surfaces 29 are in the direction of the gutter 10 overhanging.

In 6 is the intervention of the projections 25 in recesses 26 shown. The assembly off 7 is explosive in too 8th as shown, wherein striking a bearing outer shell 30 of the support bearing 21 on a collar 31 the connection sleeve 6 can be seen.

The different force courses are the 9 and 10 good to take.

LIST OF REFERENCE NUMBERS

1

 actuator

2

 clutch

3

 lever member

4

 rotor

5

 radial outside

6

 connecting sleeve

7

 Wälzkörperumlaufleiteinrichtung

8th

 ring

9

 ring

10

 gutter

11

 wire profile

12

 rolling elements

13

 Bullet

14

 Gegenleiteinrichtung

15

 carriage

16

 release bearing

17

 shell

18

 shaped spring

19

 first yoke sleeve

20

 second yoke sleeve

21

 support bearings

22

 magnet

23

 permanent magnet

24

 deflecting

25

 head Start

26

 recess

27

 Wälzkörperanlagefläche

28

 Leiteinrichtungsanlagefläche

29

 contact area

30

 Outer bearing shell

31

 collar

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011102222 [0004]
• DE 102012205452 [0006]

Claims (10)

Actuating device ( 1 ) for a clutch ( 2 ) with a rotor ( 4 ), on the radial outer side ( 5 ) a Wälzkörperumlaufleiteinrichtung ( 7 ), which has an outwardly open channel ( 10 ), whereby within the channel ( 10 ) a plurality of rolling elements ( 12 ) is guided and wherein the plurality of rolling elements ( 12 ) in a radially inwardly projecting counter-guide device ( 14 ) of a sled ( 15 ), characterized in that within a subsection of the channel ( 10 ) at least one contoured wire profile ( 11 ) is used. Actuating device ( 1 ) according to claim 1, characterized in that the wire profile ( 11 ) a rolling element contact surface ( 27 ) come into contact with the rolling element ( 12 ) and a Leiteinrichtungsanlagefläche ( 28 ) come into contact with the Wälzkörperumlaufleiteinrichtung ( 7 ) having. Actuating device ( 1 ) according to one of claims 1 or 2, characterized in that two wire profiles ( 12 ) into the gutter ( 10 ) are used and a guide track for the rolling elements ( 12 ) is formed therebetween. Actuating device ( 1 ) according to one of claims 1 to 3, characterized in that the Wälzkörperumlaufleiteinrichtung ( 7 ) along a transverse plane into two separate rings ( 8th . 9 ) is divided. Actuating device ( 1 ) according to one of claims 1 to 4, characterized in that the Wälzkörperumlaufleiteinrichtung ( 7 ) between a first yoke sleeve ( 19 ) and a second yoke sleeve ( 20 ) is fitted. Actuating device ( 1 ) according to one of claims 1 to 5, characterized in that the Wälzkörperumlaufleiteinrichtung ( 7 ) on a connection sleeve ( 6 ) is placed radially on the outside. Actuating device ( 1 ) according to claim 6, characterized in that the rotor ( 4 ) inter alia from the two yoke sleeves ( 19 . 20 ) and the connecting sleeve ( 6 ) and within the second yoke sleeve ( 20 ), and axially on a collar ( 31 ) of the connection sleeve ( 6 ) a support bearing ( 21 ) is arranged. Actuating device ( 1 ) according to one of claims 2 to 7, characterized in that the wire profile ( 11 ) is formed in the manner of a bent spring. Actuating device ( 1 ) according to claim 8, characterized in that the wire profile ( 11 ) has a 360 ° turn minus a deflection angle. Actuating device ( 1 ) according to one of claims 4 to 9, characterized in that the rings ( 8th . 9 ) made of plastic, the wire profiles ( 11 ) of a metal alloy and / or the yoke sleeves ( 19 . 20 ) as well as the connection sleeve ( 6 ) are constructed from non-cutting formed sheets.

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