DE102014218034A1 - Positioning a molded stator for a clutch actuator or a gear actuator and introducing a rotor magnet in such an actuator - Google Patents

Abstract

The invention relates to an actuator for a motor vehicle, comprising a stator having a stator and a rotor rotatably mounted relative to the stator via a rolling bearing, electromagnetic drive device, wherein the rotor has a rotor member interacting electromagnetically with the rotor arranged in the radial direction within the stator is, and wherein the rotor is further connected via a transducer unit with a trigger element, which converter unit converts the rotational movement of the rotor into a translational movement of the trigger element, wherein the rolling bearing in the radial direction within a rotor member receiving, extending in the axial direction holding portion of a support element of the rotor is arranged.

Description

The invention relates to an actuator / actuator (such as a clutch actuator, a belt starter actuator or a planetary gear actuator (PGA)) for a motor vehicle, such as a car, truck, bus or agricultural utility vehicle, with a stator and a rotatable relative to the stator via a rolling bearing wherein the rotor has a rotor element cooperating electromagnetically with the stator, which is arranged in the radial direction inside the stator, and wherein the rotor further comprises a converter unit with a trigger element (such as a piston, a gear of a gearbox, about a planetary gear, or a nut) is connected, which converter unit converts the rotational movement of the rotor in a translational movement of the trigger element.

Such actuators are already known from the prior art. So revealed the WO 2011/127888 A2 a Hydrostataktor with a master cylinder, in particular in a motor vehicle containing a housing and an axially displaceable in the housing, a pressure medium filled with pressure chamber acting piston. The piston is driven by a rotating drive electric motor with a stator and a rotor by means of a rotary drive in an axial movement changing Planetenwälzgetriebes. The Planetenwälzgetriebe is centered in the housing and a driven by the electric motor spindle is supported by a single radial bearing relative to the housing. These known systems, in particular those in the clutch actuator range, are based on a bearing concept which is not integrated in the stator.

In the known stator design thus no function of a rolling bearing, such as a ball bearing is integrated. The function of the bearing is occupied by a bearing (axially) outside the rotor. As a result, however, the tolerance range with respect to the position / position of the rotor to the stator is relatively large. Because the rolling bearing is in operation a kind of fulcrum by which the rotor, in particular the rotor rod / shaft, can tilt relative to the stator. In order to enable this relative movement / tumbling, however, a larger air gap must be maintained, which in turn brings disadvantages with respect to the installation space and the electromagnetic drive with it.

It is an object of the present invention to overcome the known from the prior art disadvantages and to enable an actuator that is more compact and more powerful. The actuator should also be cheaper to produce.

This object is achieved in that the rolling bearing is arranged in the radial direction within a rotor member receiving, extending in the axial direction holding portion of a supporting element of the rotor.

Since the rolling bearing is now located centrally in the support element of the rotor, the pivot point about which the rotor, in particular the rotor rod / shaft, tilted relative to the stator, arranged more favorably. Because of the smaller tumble paths, the air gap can be designed as small as possible, whereby even the smallest air gap tolerances can be achieved. As a result, a particularly compact arrangement of the rotor and the stator is possible. This compact design also makes the actuator itself more efficient to build. In particular, lower costs are achieved precisely for the magnets used on the stator and / or on the rotor. Furthermore, can be reduced by the radial nesting of the rolling bearing in the rotor, the axial length of the actuator / motor module of the actuator. The invention thus leads to the integration of the bearing carrier function in the stator. This is particularly suitable for systems that need to be implanted in a confined space. The bearing / roller bearing can be integrated into existing components that are already needed in the structure of the actuator. There are then no further components necessary.

Further advantageous embodiments are claimed in the subclaims and are explained in more detail below.

Thus, according to a further embodiment, it is also advantageous if the stator has a cup-shaped bearing carrier which is non-rotatably connected to a bearing outer ring of the rolling bearing. As a result, a single component can receive both (on its outer side) a stator coil of the drive device and the rolling bearing can be accommodated on its inner side. As a result, the required space is further reduced.

It is also advantageous if the bearing carrier is made of a plastic or a metal material (steel, aluminum alloy, etc.), since the stator can thus absorb different loads. A bearing carrier made of plastic is particularly easy and inexpensive to produce, a bearing carrier made of metal continues to be particularly stable.

If the bearing carrier of the stator is designed in this context as an injection molded part produced by injection molding, this component can be produced with as few machining steps as possible.

It is also expedient if the bearing carrier has a sleeve-shaped holding portion which receives the bearing outer ring of the rolling bearing, wherein the bearing outer ring is supported on an inner peripheral side of the holding portion in the radial direction to the outside. As a result, a simple and firm recording of the rolling bearing on the stator is possible.

Furthermore, it is also advantageous if the bearing outer ring with the bearing carrier form fit, such as by means of a snap connection and / or a locking ring, non-positively, for example by means of a press fit, and / or materially connected. This further improves the connection of the rolling bearing on the stator.

Conveniently, the bearing carrier is also connected by means of a Anbindefanansches with a housing of the actuator, wherein the bearing carrier is preferably positively (by crimping or Toxen / clinching), non-positively (press fit) and / or cohesively (by welding or soldering) connected to the Anbindeflansch , As a result, the stator is particularly stable connected to the actuator housing.

It is also advantageous if a bearing inner ring of the rolling bearing is rotatably connected to a support member receiving the rotor rod. As a result, the actuator is even more compact ausgestaltbar.

In this context, it is also expedient for the support element with the rotor rod non-positively, for example by means of a press fit, form-fitting, for example by means of a flange, and / or material fit, for example by means of a weld or soldering to connect. As a result, the assembly of the rotor is further improved.

If the rotor rod continues to be designed as a spindle rod, forming a part of the converter unit, and has a threaded portion, the converter unit can also be designed in a particularly space-saving manner. The threaded portion can then interact directly with the trigger element, such as a nut.

It is furthermore advantageous if the drive device has an encapsulation made of an electrically insulating material on at least one side facing a control unit, wherein the control unit is electronically connected to the drive device and controls it. The control unit is usually arranged spatially next to the drive device, whereby certain signs of wear during operation can lead to a loss of function. For example. For example, substances such as equipment may, from the drive means, enter the housing space receiving the control unit over time, thereby affecting the electrical contacts, eventually leading to damage or even separation of these contacts. Furthermore, it may happen in an already advanced state of wear of the control unit, that not all functions of the control unit can be reliably performed due to the additional vibrations occurring in operation and applied to the actuator. For example, the rotational position sensor of the control unit could no longer reliably reproduce the rotational position of the rotor under certain circumstances. Therefore, the actuator can also have an electrically connected to the drive device, the drive device controlling, electronic control unit, wherein the drive means at least on the control unit side facing one of an electrically insulating material, preferably plastic, in the form of an encapsulation or encapsulation existing geometry having.

Such an encapsulation therefore has the effect that the drive device embodied as an electric motor, which comprises the stator and the rotor, is arranged by means of a kind of spacer at a certain distance from the control unit. The encapsulation can be precisely adjusted in terms of thickness. The encapsulation layer is thus arranged spatially between the drive device and the control unit and serves as a spatial separation. This makes it possible to provide as reproducible as possible alignment of these two components for mass production, wherein the actuator can be used over a longer life cycle.

If the extrusion coating continues to be bonded to the stator and / or the rotor in a material-, force- or form-fitting manner, then the extrusion coating can be connected directly to a part of the output device. The actuator is characterized particularly space-saving ausgestaltbar.

According to a further embodiment, it is also advantageous if the stator is encapsulated on its side facing the control unit with a stator separation layer which at least partially forms the encapsulation, wherein the stator separation layer is preferably cup-shaped and a continuous bottom region of the stator separation layer in the axial direction between the control unit and the side of the stator facing the control unit is arranged and a sidewall region of the stator separator layer adjoining the bottom region surrounds the stator on a radially outer peripheral side. As a result, the encapsulation can be configured partially or completely as an envelope of a stator, which then has a type Forming stator separation layer, which separates the stator spatially from the control unit receiving portion of the housing. By this separation, the stator and the accommodating space in the housing including the driving means (ie, the electric motor) can be sealed by the housing space accommodating the control unit. As a result, the penetration of particles and liquids (oil, water, salt water, etc.), in particular wear particles and fluid fractions, in the control unit receiving area of the housing can be avoided. The life of the drive device and in the first place the reliability, but also the control unit, are significantly increased and implemented by the cup-shaped design to save space.

It is also advantageous if at least one axially extending first positioning pin is formed on the stator separation, which extends to the control unit and on which the control unit is held relative to the drive means in the axial and / or radial direction, preferably a circuit board and / or a housing cover of the control unit is held directly by the at least one first positioning pin. This makes it possible to correctly attach the control unit together with the board in one step, in particular in the axial direction to the stator and to center / centered align. As a result, the assembly is further simplified and high positioning accuracy between sensor components in the control unit and mech. Ensures elements in the electric motor unit.

It is also advantageous if at least one second positioning pin extending in the axial direction is formed on the stator separating layer, which extends toward the control unit and wherein a heat dissipation housing part is held in the axial and / or radial direction on the at least one second positioning pin. As a result, it is also possible to design a heat dissipating part embodied as a housing part, which is simultaneously placed in the correct axial and / or radial direction relative to the stator and, moreover, also centered relative to the rotor, so that the best possible heat dissipation can take place. The Wärmeableitteil, which is usually made of aluminum, thus optimally cooling acts on the stator. As a result, the performance of the actuator is further increased.

It is also expedient if the stator has a bearing carrier, such as a bearing outer ring of a roller bearing, wherein an inner peripheral surface of the stator separator, the stator separator to the rotor rotational axis centering on a radially outer retaining ring of the bearing carrier. As a result, the stator and the stator housing are also optimal for the rotor, i. centered on the axis of rotation of the rotor, which on the one hand, the torque uniformity of the electric motor is optimized and on the other hand, the ease of assembly is increased.

According to another embodiment, it is also advantageous if the rotor is encapsulated on its side facing the control unit with a Umspritzung at least partially forming Rotorumspritzung, wherein the Rotorumspritzung is preferably pot-shaped, and wherein a bottom portion of the Rotorumspritzung in the axial direction between the control unit and the control unit side facing the rotor is arranged and adjoining the bottom region side wall portion of the rotor injection surrounds the rotor on a radial outer peripheral side. Such a rotor encapsulation, which can be provided optionally in addition to the stator separation layer or instead of the stator separation layer, can also be provided with an encapsulation of the rotor. Such Rotorumspritzung has the advantage that this example. Can be applied to a front end of the rotor, thus ensuring the most accurate and optimal positioning and recording a position magnet in the rotor and the usually directly mounted on the board of the control unit rotor position sensor metrologically optimized to place the rotor. As a result, a very compact design of an actuator is created, in particular in the embodiment of the electric motor as a brushless DC motor. The rotor magnet can be further included directly in this Rotorumspritzung and its distance to the control unit on the position in the encapsulation are arbitrarily set in the axial direction. As a result, the housing space is exploited even more intense.

It is also advantageous if, in this context, a magnet receiving cap is connected to the rotor extrusion which rotatably receives a magnet holder ring arranged centrally to accommodate the axis of rotation of the rotor for receiving a position magnet, wherein the magnet receiving cap is formed integrally with the rotor encapsulation or plugged into the rotor encapsulation, such as locked, is. As a result, an optimized for receiving the position magnets area on the Rotorumspritzung be ausgestaltbar, the position magnets in this area, eg. About a press fit, centered and fixed in the axial direction to ensure optimum distance to the control unit. As a result, the rotational position of the rotor is detected as reliable as possible. In this case, the magnet receiving cap serves as a balance between the thermal expansion coefficients of the material of the Rotorumspritzung and the magnet in both a sintered, as well as a plastic-sprayed magnet.

In this context, it is also advantageous if the magnetic retaining ring with rib-shaped projections on its inner peripheral surface is ausgestaltbar, wherein the position magnet is rotatably pressed in the magnet retaining ring, snapped and / or glued. As a result, a particularly easy to produce centering and mounting the position magnets implemented, whereby the manufacturing cost of the actuator can be further reduced and the assembly forces for the pressing and / or or locking by reducing the contact surface are further reduced.

If the position magnet continues to be a plastic-bonded or sintered magnet and / or the position magnet is located on a board and / or the rotor has a laminated core and a hub part, then the inventive actuator can be produced even more efficiently.

In other words, the invention provides a corresponding mounting of the electric motor via the stator, wherein the Statortopf (bearing carrier) on the outer ring of the bearing (bearing outer ring) is supported and the inner ring of the bearing (bearing inner ring) with the spindle (rotor rod / shaft ), eg over a press bandage. In this structure, the electric motor is built from the electronics side, the stator is arranged in a two-part pot. The stator pot extends axially in the direction of electronics between the rotor and stator. Due to the proposed structures of bearing, spindle, rotor and stator variants of the assembly are possible, which run so that initially the stator is connected to the bearing. The rotor may then be connected to the shaft as a separate component (e.g., crimped) and then slid into the stator until stopped by the bearing. The bearing can be held axially by means of a retaining ring or snap locks on the stator. For this purpose, the stator is designed in the radially inner region such that it axially overlaps the shaft between the rotor and the shaft. The stator pot extends from the direction of the electronics, i. in the direction of the actuator (shaft). The structure can be done in a further alternative again from the electronics side. Here, the Statortopf extends again axially between the rotor and shaft, but it is constructed in one piece and surrounds the stator. The Statortopf extends towards the electronics.

Furthermore, a particularly compact design of a BLDC (brushless DC (DC)) rotor (internal rotor) with an integrated rotor magnet is possible. This design allows optimal mechanical centering and attachment of the rotor magnet together with the rotor unit and at the same time a space-optimized integration of the rotor magnet on the rotor facing away from the control electronics front side of the rotor. In the proposed design, the safety with respect to a relative angular rotation between the rotor magnet and the position of the permanent magnet in the stator continues to increase in a very compact design. Conventional BLDC motors in actuators with high demands on position accuracy usually require a sensor-based commutation. A very common and accurate method of commutation, which at the same time offers relatively low costs for series solutions, is the commutation of the EC motor (electrically commutated motor) by an AMR / GMR sensor (magnetoresistive, giant magnetoresistive effect based sensors).

A front side, or diametrically two-pole magnetized (rotor position) magnet is usually mounted on the output shaft (where the rotor of the EC motor is mounted). The integration can be made by a press fit on the (rotor) shaft, or by gluing (shaft front side). Thus, the rotor magnet in the tangential direction is rigidly connected to the (output / rotor) shaft. Through this connection, the rotor magnet transmits the exact rotation angle from the rotor in the direction of the sensor module in the electronic module / the control unit, which is important for the commutation of the current direction in the stator of the EC motor with a high efficiency. This sensor module usually has an IIF incremental interface. In order to enable the integration of the rotor magnet on the shaft, one needs the corresponding interface on the shaft of the rotor. That you need e.g. in the case of a compression bandage, an additional length for the interference fit (on the inner or outer diameter). Furthermore, a small part of the magnetic flux is short-circuited by the rotor magnet through the shaft material, and thus, possibly, a lower flux density is obtained in the sensor region. In a BLDC rotor design for an actuator, it is necessary to provide a very compact design, in that preferably no shaft protrudes in the direction of the control electronics. The goal is to make the integration of the rotor magnet within the rotor space. In this case, the axial position of the magnetic front side, which faces the control electronics, must be calibrated to compensate for axial tolerances in the assembly.

The rotor magnet can be further integrated in a board, which is part of the overmolding of the rotor. The encapsulation of the rotor also serves as burst protection / mechanical fixation of the permanent magnets in the rotor and as an interface for the integration of the rotor magnet. The rotor magnet is pressed in / pressed in a board in the encapsulation of the rotor package. Press-fitting can be combined optionally with a snap-in function with a hook geometry in the rotor extrusion coating, or with an adhesive process for fixing in a specific position in the axial direction. Of the Depending on the requirements of magnetic circuit design (sensor position, minimum / maximum magnetic flux density in the sensor area as a function of the radial and axial tolerances, etc.), the rotor magnet can be designed as a plastic-bonded or sintered magnet. This results in the possibility, if the rotor magnet additionally sticks, that after the Kleberdispensen the axial position of the rotor magnet is adjusted to a certain reference in Aktuatorzusammenbau. Thus, one could possibly compensate for higher tolerances in the axial direction in the production process. Alternatively, a laminated rotor package can also be implemented. As injection molding more accurate diameter tolerances on a certain number of ribs in the scope are much easier to control, you can provide the interface for the pressing of the rotor magnet with ribs. In two other variants for the mounting of the rotor magnet in the Umspritzung is a clip for locking in position (without compensation of the axial tolerances in the axial direction in the manufacturing process) and pressing in the axial direction with respect to a specific reference in Aktor- / Aktuatorzusammenbau (with compensation the axial tolerances in the axial direction in the manufacturing process) can be used. In the second variant, a certain amount of adhesive is laid in the mounting interface of the rotor magnet and after pressing (preferably slight interference fit between magnet and plastic material of the encapsulation), the adhesive will harden and finally secure the position of the rotor magnet. The rotor magnet can also be fixed in a plastic carrier, which is fixed by means of clip geometry on the rotor hub. A certain number of clips / clips of the rotor-magnet carrier (also referred to as magnetic holding cap) meet along the circumference in openings in the rotor hub and / or the rotor encapsulation and engage in the pressing.

The invention therefore relates to a compact design of a BLDC (brushless DC) rotor (inner rotor) with an integrated rotor magnet (RL magnet). This design allows optimal mechanical centering and attachment of the rotor magnet together with the rotor unit and at the same time a space-optimized integration of the rotor magnet on the rotor facing away from the control electronics front side of the rotor. In the proposed design, the safety against a relative angular rotation between rotor magnet and position increases the permanent magnet in the stator in a very compact design. The rotor magnet can be pressed in different ways into the encapsulation of the rotor / the rotor package, wherein ribs in the encapsulation, a latching function with hook geometry, and / or a combination of these previous possibilities are provided with an adhesive process / is. It is also possible to use a plastic-bonded or sintered magnet as a rotor magnet. The magnet is on a board and is pressed in with it. Also, the rotor is made of laminated core and hub part and has an integrated (rotor position) magnet.

The invention also relates to a Statorumspritzung, which is made with a plastic or with a non-conductive material. The encapsulation achieves a separation from the electronics so that no particles from the electronics area (LCU "Local Control Unit") can penetrate into the motor area. The encapsulation furthermore has a receptacle for the end region of the rotor for this purpose. In order to align the rotor, the lid or the electronics has a position sensor, which detects at least the radial position of the rotor, for example, by magnetic field lines, an extra magnet provided. By positioning pins / holes and / or spacer pins, the position (angular / axial) of a board and / or a lid, which is placed on the motor area, can be predetermined. The cast-in stator is received by a housing with heat dissipation elements. For this purpose, corresponding positioning pins stator and / or encapsulation side provided. In order to increase the efficiency of the actuator in relation to the used space of the electric motor, the space tolerances, in particular with respect to the air gap of the electric motor are reduced according to the invention. For this purpose, the encapsulation is designed with an inner diameter, which is supported on a positioning aid (edge) of the ball bearing for the rotor. By doing this relative positioning of the stator to the motor, the necessary tolerances can be reduced. The functional surface of the inner diameter of the encapsulation for centering is preferably distributed over a certain number of ribs on the diameter circumference. Thus, on the one hand, the tolerances of the centering diameter are increased via individual ribs (injection molding condition) and, on the other hand, the assembly forces are thereby reduced (smaller contact area).

The invention will now be explained in more detail below with the aid of drawings, in which different embodiments are shown.

Show it:

1 a longitudinal section through an actuator according to the invention according to a first embodiment, wherein the section is carried out along a plane in which the axis of rotation of the rotor is running, and the actuator is shown in an axial region of the designed as an electric motor drive means,

2 an isometric exploded view of the stator-rotor control unit assembly of the drive device, wherein the stator is shown from the side facing the control unit and holes of a board of the control unit are aligned to positioning pins of the stator,

3 an isometric view of a housing cover, which closes the board of the control unit to a side facing away from the stator of the board, wherein the housing cover from a bottom, that is one of the board in the operating state side facing, is shown,

4 4 is an exploded isometric view of the housing cover-board assembly, illustrating the relative position of these two components in the operating state,

5 4 is an exploded isometric view of the heat sink housing stator assembly with a heat sink housing portion centered and secured to the stator by bolts;

6 the in 5 illustrated heat sink housing stator assembly in an assembled state,

7 a longitudinal sectional view according to the 1 wherein the actuator is shown in a slightly larger area and in particular the board of the control unit can be seen,

8th a detailed view of the in 7 marked area VIII, wherein the centering between a bearing carrier and the stator separation layer is shown,

9 an isometric view of an encapsulation designed as a rotor encapsulation, which is sprayed onto an end of a rotor rod of a rotor in an operating state of the actuator, and in which rotor encasing the rotor magnet is inserted in a magnet receiving cap of the rotor encapsulation,

10 an isometric representation of the already in 9 Rotorumspritzspritz shown, in particular, the inner peripheral surface of the magnet receiving cap is particularly well visible,

11 a side view of in 9 illustrated rotor Umspritzung, this side view represents the Rotorumspritzung in a plane which is aligned parallel to the rotor axis of rotation,

12 a cross section through the rotor injection according to the invention along the in the 11 illustrated section line XII-XII, ie in a plane to which the axis of rotation of the rotor / the rotor rod is aligned orthogonally in the operating state, where particularly well the distribution of the rotor drive magnets in the Rotorumspritzung can be seen

13 a rear view of the Rotorumspritzung after the 9 to 12 , the rear side of the rotor encapsulation, ie the side facing the rotor / rotor rod in the operating state of the actuator, being shown,

14 a longitudinal sectional view of the Rotorumspritzung along in the 13 illustrated section line XIV-XIV, in which a laminated core of the rotor is inserted, wherein the longitudinal section is carried out in a plane in which the rotor axis of rotation is running,

15 a front view of the in the 9 to 14 illustrated Rotorumspritzung,

16 an isometric representation of the already in 14 in longitudinal section shown Rotorumspritzung and the rotor,

17 an isometric view of a Rotorumspritzung according to the invention according to a further embodiment, in particular a front side of the Rotorumspritzung, ie, a side which faces away from the rotor in the operating state is shown,

18 a side view of in 17 illustrated rotor Umspritzung, this side view represents the Rotorumspritzung in a plane which is aligned parallel to the rotor axis of rotation,

19 a cross-sectional view along in 18 marked section line XIX-XIX, ie along a plane to which the axis of rotation of the rotor is oriented orthogonally in the operating state,

20 a rear view of the Rotorumspritzung after the 17 to 19 wherein the rear side of the rotor encapsulation, ie the side facing the rotor in the operating state of the actuator, is shown,

21 a longitudinal sectional view of the Rotorumspritzung along in 20 marked section line XXI-XXI,

22 a front view of the in the 17 to 21 illustrated Rotorumspritzung,

23 an isometric longitudinal section of the already in 21 illustrated Rotorumspritzung and the rotor,

24 a longitudinal sectional view of another embodiment of a rotor encapsulation according to the invention, wherein the attachment of the rotor magnet magnet on the magnet receiving cap has been made with a positive connection,

25 a longitudinal sectional view of a further embodiment of a rotor encapsulation according to the invention, wherein between the rotor magnet and the Rotorumspritzung an adhesive for adhesive attachment of the magnet is provided,

26 a longitudinal sectional view of a further embodiment of a rotor encapsulation according to the invention, wherein the magnet receiving cap is clipped / plugged in the rotor encapsulation,

27 a longitudinal section through an actuator according to the invention according to a further, second embodiment, wherein the section is carried out along a plane in which the axis of rotation of the rotor is running, and the actuator is shown in an axial region of the designed as an electric motor drive means, and wherein the Rotor is mounted relative to the stator rolling bearing on the bearing bracket by means of a locking ring,

28 a longitudinal section through an actuator according to the invention according to a further, third embodiment, wherein the cut is carried out along a plane in which the axis of rotation of the rotor is running, and the actuator is shown in an axial region of the drive device designed as an electric motor, and wherein the rolling bearing is held on the bearing carrier by means of a snap connection,

29 an isometric view of a sleeve-shaped holding portion of the bearing carrier according to 28 wherein the configuration of the snap-in connection enabling snap-in projections is illustrated,

30 a detailed view of the sleeve-shaped holding portion according to 29 wherein the holding portion is cut in the longitudinal direction and in particular the snap projections are shown in an intermediate position in which they are bent in the radial direction outwards and the rolling bearing is inserted into the holding portion,

31 the holding section after 30 wherein the holding portion is shown in a retracted position in which the rolling bearing is locked in the snap projections of the holding portion,

32 a holding portion of a bearing carrier according to a further embodiment, wherein the bearing carrier in principle as in 27 shown bearing carrier is executed, the locking ring is now arranged axially spaced from the rolling bearing,

33 a holding section of a bearing carrier according to a further embodiment, wherein the rolling bearing is held by means of a press fit,

34 a front view of a further connection between the rolling bearing and the holding portion, wherein the rolling bearing is recognizable, which has on an outer side of the bearing outer ring a plurality of circumferentially-introduced recesses for forming a flange with the holding portion,

35 a longitudinal section through an actuator according to the invention according to a further embodiment, wherein the section is carried out along a plane in which the axis of rotation of the rotor is running, and the actuator is shown in an axial region of the designed as an electric motor drive means, the bearing support of the stator by means of a Anbindefanansches is attached to an actuator housing,

36 an isometric representation of the in 35 used connecting flange,

37 a detailed view in the connection region between the bearing carrier and the Anbindefanansch (nach 35 ), wherein bearing support and Anbindeflansch are connected to each other by means of a flanging, and

38 a detailed view in the connection region between the bearing carrier and the Anbindeflansch, wherein the bearing carrier and Anbindeflansch are connected to each other by means of a weld in a further embodiment.

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

In 1 is an embodiment of an actuator according to the invention 1 shown. This actuator 1 is especially optimized for use in motor vehicles such as cars, trucks, buses or agricultural vehicles. He can, for example, as an actuator 1 for actuating a clutch (ie as a clutch actuator) or as an actuator 1 for actuating a planetary gear (Planetengetriebeaktuators / PGA), in particular for the operation of a pulley drive, be configured. In general, such a constructive design of the combination e-motor / control unit at all Actuator types are used in the motor vehicle engine compartment, which use a conversion of rotational in translational motion, or a rotational movement. The highly integrated control unit offers enormous advantages in terms of functional reliability and compactness of the solution.

The actuator 1 is essentially in its assembly like the one in the WO 2011/127888 constructed Hydrostatic actuator and executed, wherein it is substantially with respect to the drive device described in more detail below 3 and its spatial connection / separation with respect to the electronic control device / control unit 6 different. The actuator of WO 2011/127888 is considered integrated herein.

The actuator 1 points, as well as the WO 2011/127888 , a housing 2 on, which is preferably designed in several parts. From the case 2 enclosed and in the housing 2 recorded is an electromagnetic drive device 3 acting as an electric motor 3 is executed and therefore also below as an alternative electric motor 3 is designated. The drive device 3 / the electric motor 3 has a stator 4 with several fixed magnetizable elements and a rotor 5 on, relative to the stator 4 is rotatably mounted. The rotor 5 has at least one electromagnetically with the stator 4 cooperating rotor element 43 (about a rotor magnet) on. The rotor 5 is furthermore connected to a spindle drive designed as a converter unit, which is not shown here, with a triggering element which can be moved in the axial direction 42 connected. At a rotation of the rotor 5 about its axis of rotation of the spindle drive acts as a converter unit and the rotational movement / rotation of the rotor 5 is in an axial movement / translational movement of the trigger element 42 transformed. The rotor 5 is still relative to the stator 4 via a rolling bearing 24 rotatably mounted. The rolling bearing 24 is in the radial direction within a rotor element 43 receiving, extending in the axial direction holding area 44 one as a rotor pot 40 trained support element 40 of the rotor 5 arranged.

The trigger element 42 is in the first embodiment after 1 designed as a mother. The rotor 5 includes a rotating rod 38 (hereinafter also referred to as rotor bar 38 or spindle rod 38 referred to) of the spindle drive / the converter unit. The pole 38 may be directly integral part of the rotor or alternatively be designed as a separate component and, for example. By means of a laminated core with the spindle rod 38 connected / postponed to this. In any case, the rotor drives 5 the spindle rod 38 of the spindle drive rotating.

The spindle rod 38 indicates to her the rotor 5 remote end region (not shown here) a spindle-like external thread, which in an internal thread of the nut / the trigger element 42 engages, so this upon rotation of the spindle rod 38 in the axial direction, ie translationally moved / shifted. This translational movement leads to a switching movement of the actuator 1 , As an alternative to a nut, the triggering element 42 also be designed as a gear of a transmission, such as a planetary gear. For example. could be the trigger element 42 having a planetary gear with the external thread of the spindle rod 38 combs and twisting the pole 38 through the rotor 5 a ring gear drives, which ring gear in turn displaces a piston in the axial direction, which piston cooperates with a pressure chamber and thus also a switching movement of the actuator 1 causes.

In the operating state of the actuator 1 ie, in a ready assembled and assembled state of the actuator 1 is the electric motor 3 by means of an electronic control unit 6 connected to a power source. The control unit 6 includes at least one circuit board 7 that with the electric motor 3 is electrically connected, so that the electric motor 3 completely controllable by the electronics unit. The board 7 is particularly vivid in 2 shown. The control unit 6 is how particularly good in 7 can be seen, in the axial direction adjacent to the rotor 5 and the stator 4 / the electric motor 3 arranged.

In the embodiment according to 1 is now according to the invention on the stator 4 an encapsulation 8th attached, which encapsulation 8th as a separate material layer, subsequently as a stator separation layer 9 designated, is configured. The stator separation layer 9 is designed in the cured state substantially cup-shaped and therefore has an annular side wall area 10 that's the stator 4 encloses radially from the outside and fits tightly against this. At one end of this sidewall area 10 closes a floor area 11 at. This floor area 11 extends in the radial direction continuously inward (to the center of the electric motor 3 towards) and thus represents a kind of continuous floor, which is sealed. The floor area 11 closes at the end of the sidewall area 10 , the control unit 6 facing, so that the bottom area 11 axially between the electric motor 3 and the control unit 6 / the board 7 , is arranged. The electric motor 3 still lies above the stator separator layer 9 so on the case 2 and / or on a housing-fixed component, that it passes through the stator separation layer 9 to the control unit 6 out, ie the housing space in which the control unit 6 and its board 7 is absorbed, sealed. For electrical coupling of the stator 4 with the control unit 6 is in the ground area 11 preferably, an electrically conductive contact wire and / or leadframe pin performed by the stator separation layer 9 is also sealed, so that only electrical energy (current / voltage) between the control unit 6 and the electric motor 3 can flow back and forth.

Furthermore, the encapsulation 8th at their control unit 6 facing side, extending in the axial direction, first positioning pins 12 on. These first positioning pins 12 are along the circumference of the stator 4 on the floor area 11 arranged distributed. Each of these first positioning pins 12 extends substantially in the axial direction (in the operating state to the control unit 6 towards) and is substantially parallel to the adjacent first positioning pins 12 running out. Each of the first positioning pins 12 is in a hole 13 , which is designed as a bore / through hole, the board 7 insertable, leaving the board 7 in the radial direction and in the axial direction by simultaneous abutment of the end face of the blank on stops 14 the first positioning pins 12 is secured. The first positioning pins 12 each have a rod-shaped projection / rod areas 15 up, away from the stop 14 extending in an axial direction towards the board and in a hole 13 the board 7 is inserted. The bar areas 15 in turn continue to have a projection extending along the circumference, such as an annular projection on. This ring projection is after its passage through the hole 13 the board 7 behind the board 7 locked and fixed the board 7 via a positive connection. This positive connection may alternatively be performed somewhat differently to the one extending along the circumference projection. For example. For example, a plurality of circumferentially extending projections / annular projections could be axially adjacent to the rod portion 15 be arranged, for example, to form a kind of Christmas tree structure. In addition to the positive connection or alternatively, the rod area 15 also have a constant diameter over its length substantially, in which case the board 7 at the stop 14 and / or the bar area 15 is glued on. The board 7 has three holes 13 on, in the three first positioning pins 12 are inserted.

From the electric motor 3 opposite side, as they are particularly good in the 3 and 4 it is recognizable on the board 7 and / or on the stator 4 a housing cover 16 fixed. Also this housing cover 16 preferably also has positioning pins extending substantially in the axial direction 17 , hereinafter referred to as third positioning pins 17 referred to. Also these third positioning pins 17 can each in holes 13 the board 7 engage and / or be plugged in there and held in the axial direction and radial direction (material, non-positive or positive fit), so that a relative assurance of the housing cover 16 relative to the control unit 6 / the board 7 he follows. Also, the housing cover points 16 preferably pen shots 19 on, at least some of the through the board 7 projecting ends of the rod areas 15 the first positioning pins 12 record and record.

As continue in the 5 and 6 is particularly well visible, is between the stator separator 9 and the board 7 a Wärmeableitteil 18 arranged. This usually made of aluminum Wärmeableitteil 18 has integrated, radially inwardly extending projections, which act as tabs 39 are formed and through the several holes 20 are introduced. On the one hand, these holes are used 20 as through-holes for screws 21 , At one of the stator 4 opposite side of each of these through holes is a screw head of a screw 21 at the flap 39 on. The screws 21 turn in tapped holes 22 in the stator separation layer 9 or in the stator 4 , or preferably in the tabs of a metallic case of the stator 4 screwed. As a result, a better strength of the screw connection against vibration loads is achieved. On the other hand, the holes are used 20 for receiving additional positioning pins 23 also at the stator separator 9 are sprayed with. These positioning pins 23 are below as second positioning pins 23 designated. These second positioning pins 23 extend substantially in the axial direction and preferably comprise a latching device, in the form of a projection extending along the circumference, such as an annular projection, at least in the operating state in the respective bore 20 is engaged. As a result, a positive retention of the Wärmeableitteils is also 18 opposite the encapsulation 8th and thus the stator 4 possible.

In the 7 and 8th is again vivid the centering between the stator separation layer 9 / the encapsulation 8th and the rotor 5 shown. As can be seen well herein, the rotor is 5 by means of a rolling bearing 24 relative to the stator 4 rotatably mounted. For optimum centering of the stator 4 opposite the rotor 5 is on an outer ring of the rolling bearing 24 a bearing carrier 25 Pressed, which bearing carrier 25 fixed to the housing (as a component fixed to the housing). Again on the bearing carrier 25 , namely on a ring region extending in the axial direction 26 of the bearing carrier 25 is the sidewall area 10 the stator separation layer 9 postponed. This is the side wall area 10 with a radial inside at a radial outside of the ring area 26 of the bearing carrier 25 on. These two peripheral surfaces are tolerance matched so that the Statortrennschicht 9 with the bearing carrier 25 at least in some areas along the circumference performs a press fit. Thus, the stator separation layer is 9 on the bearing carrier 25 pressed.

In addition to the (first) encapsulation 8th acting as a stator separator 9 is designed, can also be the rotor 5 with an encapsulation 28 , hereinafter referred to as second encapsulation 28 designated to be executed. The first encapsulation 8th and the second encapsulation 28 In this case, they can be integrally connected with one another to form an encapsulation. The first and second overmolding 8th . 28 However, as in the 1 to 26 is preferably provided, be configured in two parts / separated from each other. The second encapsulation 28 is as Rotorumspritzung 29 executed and on a front end of the rotor rod 38 of the rotor 5 sprayed.

The rotor encapsulation 29 furthermore serves to accommodate a rotor magnet / position magnet 30 , This position magnets 30 as well as it is especially good at 1 it can be seen is centric to a sensor 31 arranged which sensor 31 again directly on the board 7 is attached, namely on a front side of the board 7 that the electric motor 3 in the operating state is facing. Between sensor 31 and position magnet 30 is again the floor area 11 the first overmoulding 8th Gradient. The sensor 31 is designed as a rotary position sensor and detected in the usual way by means of the rotationally fixed over the Rotorumspritzung 29 with the rotor 5 connected position magnets 30 the rotational position of the rotor 5 , The various embodiments of Rotorumspritzung 29 are in connection with the 9 to 26 illustrated. The rotor encapsulation 29 is always designed substantially cup-shaped and with an annular side wall area 32 around the rotor 5 arranged to run around. To the sidewall area 32 closes at an axial end, which in the operating state of the control unit 6 facing, a floor area 33 at. The floor area 33 is substantially inward in the radial direction and is in a radial center region, ie, a region that is more inward in the radial direction than the sidewall region 32 , with a magnetic retaining ring 34 comprehensive magnetic holder cap 27 connected. The magnetic retaining ring 34 again extends substantially in the axial direction. In the magnet retaining ring 34 is then the position magnet 30 held against rotation.

According to a further embodiment of the rotor encapsulation 29 that in the 9 to 16 is shown, for the purpose of Lagemagnetfixierung the inner peripheral surface 35 a plurality of circumferentially distributed inwardly projecting projections / retaining projections 36 on. The inner diameter of these retaining projections 36 is so on the outer diameter of the annular bearing magnet 30 matched that the position magnet 30 with the magnet retaining ring 34 a press fit is received. The position magnet 30 is thus in the Magnethaltering 34 the Rotorumspritzung 29 pressed. With its inner peripheral surface 35 holds the magnet retaining ring 34 the position magnet 30 firm against rotation. The magnetic retaining ring 34 is also integral with the floor area 33 connected.

As continues in 12 can be seen are in the sidewall area 32 imbedded multiple rotor drive magnets and thus fixed along the circumference, wherein the polarity of the mutually adjacent magnets along the circumference each differ.

As continues in 14 can be seen, is the rotor 5 according to this embodiment at its front end, which in the Rotorumspritzung 29 sticks out, as a laminated core 37 designed. The laminated core 37 has several adjacent discs and is in the rotor injection 29 held. The laminated core 37 and the rotor extrusion 29 as well as the rotor drive magnets therefore form part of the rotor 5 out. The pole 38 the spindle drive is in the operating condition, as it is, for example. In 1 it can be seen in the laminated core 37 inserted and held in this rotation. This design is also particularly good in 16 to recognize.

As an alternative to the design only as a laminated core 37 It is also possible, as it is in the 17 to 23 is executed, the Rotorumspritzung 29 instead of just on a laminated core 37 also radially from the outside on the rotor pot 40 with a pressed-on laminated core aufzuspritzen what combination of Rotortopf 40 and laminated core then in the operating state also rotatably with the spindle rod 38 is connected, for example by a press fit and / or a welded joint. This alternative embodiment has the advantage that thereby a space for storage in the inner region of the rotor 5 is created freely.

Furthermore, it is alternative or in addition to that in the 9 to 23 realized press fit between the position magnet 30 and magnetic retaining ring 34 also possible, the position magnet 30 in the magnetic retaining ring 34 different rotatably to install. For example. by means of a clip / snap connection, via a latching on the inner peripheral surface 35 or on the outer peripheral surface of the position magnet 30 arranged projections in grooves / annular grooves of the outer peripheral surface of the position magnet 30 or the inner peripheral surface 35 of the magnetic retaining ring 34 as it is in 24 is shown. Furthermore, as it is in 25 is shown, it is also possible, the position magnet 30 additionally or alternatively by means of an adhesive bond to the magnet retaining ring 34 to fix.

Furthermore, it is also possible, instead of the magnetic pickup cap 27 (as in the 1 to 25 described) integral with the floor area 33 to design, as one from the bottom area 33 perform separate ring as it is in 26 is shown. This separate ring is then provided with a clip connection, such as one or more annular projections, which latches into an undercut and the magnet receiving cap 27 then about this clip holder in the Rotorumspritzung 29 holds against rotation. Into the magnet receiving cap 27 is then again the position magnet 30 used. It is also possible, a burst protection 41 radially around the rotor extrusion 29 to arrange around to protect the overmoulding from herniation.

The rotor encapsulation 29 and / or the stator separation layer 9 are made of an electrically insulating material, such as a plastic, and on the drive device by means of a plastic casting process, such as an injection molding process 3 applied.

Coming back to 1 is the rolling bearing in the first embodiment 24 designed as a ball bearing. As an alternative to the configuration as a ball bearing / deep groove ball bearings, however, it is also possible to use the rolling bearing 24 to design differently, for example as a roller, barrel or needle roller bearings. The rolling bearing 24 also usually has a bearing inner ring 45 and one in the radial direction outside of the bearing inner ring 45 arranged bearing outer ring 46 on which two rings 45 and 46 by a plurality of rolling elements distributed along the circumference 47 spaced and rotatable to each other are stored. The rolling elements 47 are, as already mentioned, shaped as spheres. According to the explanations 1 is the bearing inner ring 45 rotatably with the rotor rod 38 connected, namely pressed onto this. Also the support element 40 which is designed essentially pot-shaped and therefore also as a rotor pot 40 is designated, is with the rotor rod 38 connected and thus recorded on this. For connection to the rotor bar 38 has the support element 40 an axially extending, sleeve-shaped rod receiving portion 48 on. This rod receiving area 48 is preferably also on the rotor rod 38 pressed and thus firmly connected with this. From the pole receiving area 48 extends a bottom portion of the support element 40 in the radial direction to the outside, to which also in the axial direction extending holding area 44 out. The holding area 44 is again in the axial direction, in which also the rod receiving area 48 extends. This holding area 44 runs so far in the axial direction that he the rolling bearing 24 radially covered from the outside / surmounted. On an outer circumferential surface of the holding area 44 is then again the rotor element 43 fixed / fixed, which rotor element 43 designed as a magnet.

The bearing outer ring 46 of the rolling bearing 24 is in turn rotationally fixed with the bearing carrier 25 connected. The bearing carrier 25 is also designed essentially pot-shaped and thus also referred to as Statortopf. The bearing carrier 25 has a sleeve-shaped holding portion for attachment to the bearing outer ring 49 on. The holding section 49 extends in the axial direction in a space between the bearing outer ring 46 and the holding area 44 of the support element 40 , In this embodiment, the bearing outer ring is preferably press-bonded to an inner peripheral side / inner peripheral surface of the holding portion 49 connected. The bearing outer ring 46 is therefore over the holding section 49 supported in the radial direction to the outside. The bearing carrier 25 is preferably made of a metal sheet. Through several deep drawing operations, this metal sheet is then in the desired cup shape of the bearing carrier 25 reshaped. As an alternative to the embodiment as a metal component, the bearing carrier 25 However, also be made of a plastic material, for example by means of an injection molding process.

Another embodiment of the actuator according to the invention 1 is in 27 shown, which embodiment according to the embodiment according to 1 is carried out essentially, but in particular with respect to the bearing carrier 25 Has differences. The representation after 27 is mirrored to the representation in 1 , In contrast to the embodiment according to 1 is the holding section 49 configured such that it has a radially extending paragraph paragraph 50 has, at which the bearing outer ring 46 in a first axial direction. On a this paragraph 50 opposite side of the bearing outer ring 46 is in a circumferential groove in the holding section 49 placed in a circlip 51 snapped / engaged to the bearing outer ring 46 to be secured in position in a second axial direction. Additionally or alternatively, the bearing outer ring 46 again with the inner peripheral surface of the holding section 49 to form a press federation. In addition, the bearing carrier 25 in this embodiment, preferably made of a plastic material, for example by means of an injection molding process.

In 32 a further embodiment is shown, wherein the bearing outer ring 46 again at a paragraph 50 abuts, but to the side (second axial direction) of the locking ring 51 spaced from the retaining ring 51 is arranged. In this case, the bearing outer ring 46 in the holding section 49 pressed.

As continue in connection with 33 it is also possible, however, the bearing outer ring 46 exclusively in the holding section 49 Press in without providing another circlip.

Combined with 34 Another embodiment is possible, wherein the bearing outer ring 46 may be configured such that it by means of a flanging with the holding portion 49 connected is. For this purpose, the bearing outer ring 46 on its outer peripheral side a plurality of extending in the axial direction and around the circumference of the rolling bearing 24 around arranged recesses 52 on. Preferably, there are three recesses 52 arranged offset by about 120 ° along the circumference to each other. For non-rotatable connection with the bearing carrier 25 becomes the holding section 49 formed from the outside with a crimping or clinching tool, so that the holding section 49 at least partially deformed into these recesses. As a result, a positive connection is given.

In the 28 to 31 Yet another embodiment is shown as the holding section 49 can still be configured. The holding section 49 has at its the bearing outer ring 46 receiving end portion a plurality of axially extending and circumferentially spaced apart slots, thereby forming a plurality of snap projections 53 form. These snap tabs 53 as well as in the 30 and 31 are particularly well visible, are elastically deformable / bendable in the radial direction, so that the bearing outer ring 46 in these snap tabs 53 (form-fitting) can be latched. Each of the snap tabs 53 has a retaining lug at its end 54 on, which extends in the radial direction inwards. The 30 shows here first the Einschiebevorgang the rolling bearing 24 in the holding section 49 , wherein the snap tab 53 in an elastically bent position, that is in an intermediate position, is located. The operating position is then in 31 represented in the bearing outer ring 46 in the holding section 49 positively engaged / snapped / inserted and the bearing outer ring 46 is held positively and is fixed in the axial direction.

As continues in 28 also visible, is also the support element 40 alternatively to the in 1 shown press fit (non-positively) positively and / or cohesively with the rotor rod 38 connectable. In this version after 28 is the pole receiving area 48 flanged so that it along a peripheral region in a recess 55 the rotor bar 38 protrudes. The recess 55 is designed as an annular groove. The pole receiving area 48 is thus crimped in the radial direction inwards / clinched. In addition, the support element 40 also on the rotor bar 38 welded or soldered.

In connection with 35 is then still another embodiment of the actuator according to the invention 1 represented, which execution in turn essentially as the execution after 1 is constructed, but in addition a tether 56 is provided. The connection flange 56 , as well as in particular in 36 is clearly visible, has a sleeve-shaped connecting portion 57 on, with it on a radial outside of the bearing carrier 25 is attached. In the execution after 35 is the connecting section 57 preferably welded or brazed (brazing), as this connection also in connection with 38 is shown. Alternatively, however, he may also be soldered. As related to 37 it can also be seen on the outer peripheral side of the bearing carrier 25 be clinched or beaded. The connection flange 56 has one to the connecting portion 57 subsequent, extending in the radial direction flange 58 which in turn has a plurality of (four) through holes for receiving (four) fasteners such as screws or rivets, which are used to attach the Anbindeflansches 56 on the housing 2 serve. The housing 2 In this embodiment, it is preferably designed as an actuator housing, which is the mechanical part of the actuator / actuator 1 includes.

In other words, by the invention, a bearing (rolling bearings 24 ), which is designed as a ball bearing / deep groove ball bearings. Alternatively, depending on the load parameters (speed, load collective, operating temperature, etc.), the bearings 24 also be designed as a plain bearing. The plain bearing can then directly as part of the encapsulation of the stator 4 be executed. Alternatively, an additional plastic bearing sleeve with optimized sliding properties (material selection, focused on function: bearing) can be mounted separately in the stator encapsulation. The bearing guide is by an additional part, namely the bearing carrier 25 , set. This bearing carrier 25 is in the actuator housing 2 positioned and with fasteners, namely four screws, together with LCU headsink, stator housing and actuator housing 2 attached. The stator centering takes place at the stator inner diameter.

The stator 4 , in particular the bearing carrier 25 can be designed as a plastic part. The stator 4 is also encased in plastic. This plastic forms the seat of the bearing outer ring 46 , The axial stop of the bearing 24 is formed in a plastic housing. The advantage of this variant is the bearing carrier function in the stator 4 to complete. Furthermore, there are different variants for attachment of the rotor pot 40 on the shaft (rotor bar 38 ) (for function: torque overlay). First, there is a press federation between the Rotortopf 40 on the rotor bar 38 if possible, alternatively, the rotor pot 40 also by means of a flange or a flange and a weld combined on the rotor rod 38 fixable.

Depending on the assembly concept, different integration variants for the bearing can be used 24 be proposed in the stator injection. First, the spindle / rod 38 , the sensor magnet 30 , the warehouse 24 and the Rotortopf 40 prefabricated / pre-assembled as a subassembly. The sub-assembly then becomes together with the bearing 24 in a Snapringgeometrie (snap tabs 53 ). Alternatively, a cylindrical interference fit of the subassembly between the bearing 24 and the bearing carrier 25 , preferably in plastic. In an assembly concept, where the rotor pot 40 only after mounting the subassembly of the rod / shaft 38 , the sensor magnet 30 and the camp 24 is to be mounted in the Statorumspritzungsgeometrie, in turn, then the sub-assembly in the Statortopf / bearing carrier 25 To assemble, in turn, various integration options are suitable. In this regard, the subassembly / bearing assembly may include a circlip 51 secured axially. This can be done, for example, before installing the rotor pot 40 or if the rotor pot 40 with the wave 38 and the rotor magnet 30 as a subassembly after assembly of the bearing 24 / Circlip 51 be mounted to be executed. In this case, the outer diameter of the rotor magnet must 30 smaller than the inner diameter of the bearing 24 be.

Furthermore, the function of the bearing carrier 25 also directly in the stator 4 to get integrated. This in turn reduces the concentricity error and thus the air gap can be further reduced. In this context, then is the camp 24 axially in the bearing carrier 25 Supported from metal (part of the Statortopfes 25 ). This in turn results in different variants for the axial protection of the bearing: Press Association of the bearing 24 in the bearing carrier 25 , axial circlip 51 on the outer diameter of the bearing 24 or twisting in the bearing carrier 25 on the outer diameter of the bearing 24 for axial mounting of the bearing 24 , For example, it is possible here to form three embossing points which are arranged offset from each other by 120 degrees of the circumference. Also, different concepts for the integration of the Anbindeflansches 56 suitable. These are in the 35 to 38 shown. The connection flange 56 (Bayonet) can by Toxen (clinching) or flanging along with the Static pot 25 be connected, or only by welding (eg spot welding) or brazing with the Statortopf 25 get connected.

LIST OF REFERENCE NUMBERS

1

 actuator

2

 casing

3

 Drive device / electric motor

4

 stator

5

 rotor

6

 control unit

7

 circuit board

8th

 Encapsulation / first encapsulation

9

 Statortrennschicht

10

 Sidewall region

11

 floor area

12

 first positioning pin

13

 hole

14

 attack

15

 bar area

16

 housing cover

17

 third positioning pin

18

 Heat dissipation member / Wärmeableitgehäuseteil

19

 pin receptacle

20

 drilling

21

 screw

22

 threaded hole

23

 second positioning pin

24

 roller bearing

25

 bearing bracket

26

 ring area

27

 Magnetic receiving cap

28

 Encapsulation / second encapsulation

29

 Rotorumspritzung

30

 position solenoid

31

 sensor

32

 Sidewall region

33

 floor area

34

 Magnetic retaining ring

35

 Inner circumferential surface

36

 retaining projection

37

 laminated core

38

 Rod / rotor rod / spindle rod

39

 flap

40

 Rotortopf / support element

41

 Burst protection

42

 triggering element

43

 rotor member

44

 holding area

45

 Bearing inner ring

46

 Bearing outer ring

47

 rolling elements

48

 Rod receiving area

49

 holding section

50

 paragraph

51

 circlip

52

 recess

53

 click projection

54

 retaining nose

55

 recess

56

 Anbindeflansch

57

 connecting portion

58

 flange

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

• WO 2011/127888 A2 [0002]
• WO 2011/127888 [0076, 0076, 0077]

Claims (10)

Actuator ( 1 ) for a motor vehicle, with a stator ( 4 ) and one relative to the stator ( 4 ) via a rolling bearing ( 24 ) rotatably mounted rotor ( 5 ), electromagnetic drive device ( 3 ), wherein the rotor ( 5 ) an electromagnetically with the stator ( 4 ) cooperating rotor element ( 43 ), which in the radial direction within the stator ( 4 ), and wherein the rotor ( 5 ) via a transducer unit with a trigger element ( 42 ), which converter unit controls the rotational movement of the rotor ( 5 ) in a translational movement of the trigger element ( 42 ), characterized in that the rolling bearing ( 24 ) in the radial direction within a rotor element ( 43 ) receiving, extending in the axial direction holding area ( 44 ) of a supporting element ( 40 ) of the rotor ( 5 ) is arranged. Actuator ( 1 ) according to claim 1, characterized in that the stator ( 4 ) a pot-shaped bearing carrier ( 25 ), the non-rotatably with a bearing outer ring ( 46 ) of the rolling bearing ( 24 ) connected is. Actuator ( 1 ) according to claim 2, characterized in that the bearing carrier ( 25 ) is made of a plastic or a metal material. Actuator ( 1 ) according to claim 2 or 3, characterized in that the bearing carrier ( 25 ) of the stator ( 4 ) is designed as an injection molded part produced by injection molding. Actuator ( 1 ) according to one of claims 2 to 4, characterized in that the bearing carrier ( 25 ) a sleeve-shaped holding portion ( 49 ), which the bearing outer ring ( 46 ) of the rolling bearing ( 24 ), wherein the bearing outer ring ( 46 ) on an inner peripheral side of the holding portion (FIG. 49 ) is supported in the radial direction to the outside. Actuator ( 1 ) according to one of claims 2 to 5, characterized in that the bearing outer ring ( 46 ) with the bearing carrier ( 25 ) positively, for example by means of a snap connection and / or a retaining ring ( 51 ), non-positively, for example by means of a press fit, and / or materially connected. Actuator ( 1 ) according to one of claims 2 to 6, characterized in that the bearing carrier ( 25 ) by means of a connecting flange ( 56 ) with a housing ( 2 ) of the actuator ( 1 ), the bearing carrier ( 25 ) preferably positively, non-positively and / or cohesively with the Anbindeflansch ( 56 ) connected is. Actuator ( 1 ) according to one of claims 1 to 7, characterized in that a bearing inner ring ( 45 ) of the rolling bearing ( 24 ) rotatably with a the support element ( 40 ) receiving rotor rod ( 38 ) connected is. Actuator ( 1 ) according to claim 8, characterized in that the supporting element ( 40 ) with the rotor rod ( 38 ) non-positively, for example by means of a press fit, positively, for example by means of a flanging, and / or materially, for example by means of a weld, is connected. Actuator ( 1 ) according to one of claims 1 to 9, characterized in that the drive device ( 3 ) at least at one, a control unit ( 6 ) facing side of an existing electrically insulating material encapsulation ( 8th . 28 ), wherein the control unit ( 6 ) electronically with the drive device ( 3 ) and controls them.

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