Electromagnetically switchable defined locking device with modular design, a motor vehicle brake comprising the locking device and manufacturing process therefor

Abstract

The invention relates in its core to an automotive parking brake system for a rotating drive train 2, comprising a wheel 3 which is fundamentally rotatable and, if required, electrically lockable by means of a translationally relative displaceable locking element 4 for electrical locking and for holding without current by means of a positive engagement in the wheel 3, comprising an electric locking actuator 5,35 for translationally guided displacement of the locking element 4 from a release position I to a locking position II by means of a defined applied actuator force, with an electronic control and / or regulating unit 7 (ECU, WCU), wherein the electric locking device 1 comprises at least one aggregated sub-assembly / sub-module 10.

Description

The invention relates to a novel parking lock system comprising a new parking lock actuator defined to be electrically switchable, in particular for an electric motor vehicle brake. The locking locking locking actuator is particularly suitable and intended for arrangement, attachment, integration on a motor vehicle wheel brake of the friction brake type. In this context, the locking actuator can be present on the one hand as an independently manufactured component or as a component of a locking wheel brake of the disc brake type and can be specified in this respect without departing from the invention. It is also possible to apply the described locking actuator module to, in and / or for an electrically actuatable (parking) drum brake, which may therefore basically also be present as a combined actuatable motor vehicle drum brake, which in addition to the electrical parking brake function could also assume an electrical service brake function.The invention may in principle be applied to any dynamically driven system with need for locking or parking brakes, i.e. preferably primarily with suitability and determination for vehicle construction but independently thereof in principle also for stationary application such as, for example, general machine, installation and device construction, building construction (for example. The wind generators) etc. can be used. In principle, integration or incorporation in brake force generators, brake amplifiers (boosters), vehicle powder packs, actuating devices and actuator systems, as in the case of the mentioned motor vehicle brake systems or parts or components in this respect, is possible.The invention can be recommended in particular by way of example for preventing rotation in the function of a brake lock acting on the drive train side, and for this purpose the locking device can be inserted on or in a receiving component, such as in particular in a transmission housing, such as in particular in a motor gear unit, or in a motor generator unit, as well as combinations thereof. The technology according to the invention of the locking device is generally freely scalable in terms of performance and size, expandable and can be implemented comparatively universally, i.e. rationally.The invention is primarily preferably suitable for efficient electrical parking power supply in connection with the types of passenger car friction brakes. These may be present, in particular, as partial lining disc brakes or alternatively as full disc brakes, multi-disc brakes or the like.DE 100 54 471 A1 relates to an electromechanically actuatable disc brake with a parking brake system. The parking brake system has a brake mechanism and a trigger for triggering the brake mechanism. The brake mechanism is configured to engage between two teeth of a gear of the disc brake.DE 10 2020 213 916 A1 discloses an electromechanical motor vehicle wheel brake having a brake housing module and a servomotor module with a drive and transmission drive train, which is controlled electrically or electronically via a control unit and to which at least one adjusting means is assigned, which adjusting means is suitable and intended with a transmission means for acting on at least one associated motor vehicle friction lining for the purpose of releasable frictional cooperation with a rotatably mounted brake rotor.DE 197 50 420 A1 relates to an electrically actuatable brake for a motor vehicle having a ratchet wheel which is connected in a rotationally fixed manner to a drive shaft of an electric motor of the brake. Two blocking elements arranged symmetrically to the ratchet wheel are pivotable by means of an electric motor, so that the ratchet wheel and consequently the brake can be mechanically fixed. A spring element serves for latching the ratchet wheel.EP 1 032 773 B1 discloses an electromechanical disc brake with a planetary gear and with a locking device, therefore also comprising a blocking element with linear drive according to the electric lifting magnet principle. For a compact, compacted construction, in all recommended embodiments a parking brake housing is formed on a cover closing a housing of the actuating unit.The invention is based on the problem of providing a novel electrical locking system, in particular an electrical parking brake EPB, which is stable and highly load-compatible and can be obtained with high-volume serial suitability and which, moreover, permits a distortion-free, flickering engagement and can finally be produced with as reduced a weight as possible. The invention is intended to enable, in particular, a rational design development incompetent and flexibility for the purpose of efficient scaling, or to allow a comparatively simple adaptation capability for product variation. The locking system is intended to be provided to any desired customer in industrial production with particular precision and nevertheless rational +secure and at the same time to be able to be mounted simply and simply. In particular, mass-based use as a favorable electric motor vehicle parking brake system is to be universally possible without requiring complicated special configuration or special components or binding. The main goal of a preferred vehicle application is the suitability and determination with focus for the equipment for the motor vehicle wheel brake housings or vehicle drive train arrangement, such as in particular in or on one of a drive train component (for example on or in a vehicle transmission), without being restricted in this respect in any way to any extent.A further subject matter of the present invention is a provision of a vehicle brake with a corresponding locking (brake) system, in particular embodied on the basis of an electrically actuatable motor vehicle wheel brake, or, furthermore, alternatively, a motor vehicle drive train which contains the electric motor vehicle locking brake system.Finally, an important object of the invention is to present to experts efficient means and ways for a particularly robust, stable, reliable and equally labor-intensive manufacturing and assembly method for the purpose of profitably large-scale production and equipment of the consumer systems with the electric parking brake systems, the combined modules or end products (complete automotive wheel brake systems and / or automotive drive trains or motor vehicles containing the same).The respective object is achieved in the most general understanding by means of a modularized plug-and-play formulation (and on the basis of defined conventions) by means of the features of the respective independent patent claims. Advantageous further developments of the respective solution to the problem are to be found in the dependent dependent claims. With regard to an application of the invention in or on a periphery (in vehicle construction, for example dry body side, wet body side, allocated in an oil bath, or without an oil bath, with or without ambient weathering possible), the invention fundamentally does not make any particular claims.A locking device, which is represented according to the invention as a subassembly / submodule, comprises a locking lock actuator which is defined in an electromagnetically switchable manner. In a preferred embodiment of the invention, the subassembly / module is configured to be particularly simple and nevertheless securely implemented in a targeted manner on the basis of a plug-type interface convention according to a plug-and-play concept.A locking device according to the invention enables a positive locking of the respective drive train which is basically secured without current. The parking brake function is defined as required releasably and in principle permanently inhibited without current by form locking. Accordingly, there is a particular suitability and determination of the invention for the purpose of establishing a motor vehicle in the form of an electric parking brake function, in addition to an operating wheel brake function which is defined as being basically free of current. In this case, for an improved modular construction with installation space compression, it is made possible in a preferred embodiment for the parking brake locking actuator to be present as an independently packaged sub-module which can be handled independently (advantage: independently premountable sub-module which can be pretested as a module). This independently prefabricated module of the locking system can consequently be prefabricated very simply and efficiently and can be supplemented as required in situ on or in, for example, an electric wheel brake actuating device of a motor vehicle wheel brake, in order to provide an electric parking brake function. The representation as a submodule follows a demanded industrial logistics with handling advantages for the purpose of targeted use controlled in accordance with requirements. Equipment and installation in the periphery, such as in particular in a wheel brake, is defined in a simplified manner.A spring-biased electromagnetically linearly displaceable (longitudinally guided) locking bolt element of the locking device may be understood dynamically-modelically in the widest sense as an electromagnetically driven physical spring mass system (in a vehicle), which is also influenced by gravity and other external ran condition or vibration excitation. On the one hand, a mass of the locking element which is mounted displaceably and is accelerated from standstill goes to its switchover behavior or system response upon excitation. On the other hand, the situation of the lock-up check under external excitation (particularly, due to vibration of a vehicle wheel brake system due to rough road) is such that system response due to vibration excitation is possible. To avoid resulting malfunction, such as in particular avoiding resonance as a result of external excitation, it is understood that constructive countermeasures are possible and expedient in order to exclude incorrect behavior, i.e. for example a special dimensioning, special weight facilitation or mass aggregation on locking element and / or anchor and / or a spring preload force adapted to the respective vehicle application case.The automotive mass production takes particular advantage of the modular construction proposed. In one embodiment of the invention, a particular convention for correct pairing is offered for this purpose, i.e. preferably the preparation with positively paired coding on the basis of the preferred interface embodiments (plug-socket principle=plug-and-play) which are represented in the form of a profile and which may even be present in different expansion stages (top-down principle) in a stepwise degradable manner on cooperating components or components via the system of the locking system, or if desired in a rolled-out manner over a plurality of component pairings.In the simplest embodiment, one embodiment of the invention includes a pairing assigned in a coded manner on the basis of a projection with a plug-like plug-in interface on a component housing of the locking system, which for the form-fitting plug-in receptacle in a cavity on the peripheral housing (for example. The housing of a motor gear unit MGU) is provided for the wheel brake housing.Based on a parallel subordinate basic idea of the present invention, the relevant industry is decided a significant rationalization potential. For example, according to the invention, previous redundancy-at least with respect to independent drive trains in motor vehicle brake systems-is eliminated in that the locking device according to the invention enables a locking cooperation in conjunction with a drive train of a service brake function, even suitable and intended to cooperate in a combined networked manner with this drive. This can be achieved by engaging this drive train directly with the aid of a positive locking, so that the parking brake system provided thereby fundamentally does not require an independent motor-transmission arrangement (for generating parking brake force), because the service brake actuator system serves for this purpose. Independently of this, it is of course possible, with a particular safety requirement, to nevertheless provide certain redundancy of actuator systems. On the other hand, the invention allows for the first time a particularly flexibleized parking brake system, i.e. a parking brake system which is made possible in a varied modular manner, on the basis of simple subassemblies / module supply as required, which enables in particular the motor vehicle customers intelligent variant formation on the basis of a largely standardized platform concept.By way of example, in rationalization of a manufacture of wheel brake components by a company on the basis of the convention / coding, it can advantageously be provided that, by way of example, the interface agreement (interface convention) according to the invention for the purpose of flexibility-controlled pairing of the modules or components is defined, as required or for all manufactured wheel brake products in the field of wheel brake, such as preferably namely for wheel brake housings, or rather all electrical actuating devices (MGU motor gear units), in such a way that, on the one hand, a particular receiving cavity, for example therefore at least one receiving cavity in each housing, is in principle provided to the periphery as always as possible, and, on each subassembly / submodule of the parking brake system, in principle, at least one special plug-like projection, which is suitable by convention and intended for engagement in the cavity, is always at least one. In the sense of such "operational standardization / factory standard / standard", a locking actuator module can be easily integrated, i.e. assembled, as required, because it is basically suitably equipped according to the interface convention with the plug-in interface arranged accordingly suitably. As a particular advantage of the further developed invention, a rational replacement construction, supplier replacement or the like is accordingly made possible.Ergo makes it possible for a matched cavity in the peripheral interface presented according to the invention and the plug-in coding convention presented for a company to also provide a home-based, specially designed and nevertheless rationalized mutual pairing for all components / modules to be joined together. Thus, in principle, the possibility according to a house standard or even industry standard is opened to a certain extent for an interface of a parking brake system.If, for example, there is now no need for equipment with an integrated parking brake locking module, the receiving cavity on the MGU housing, or on a housing of a wheel brake, could either be simply omitted, or alternatively, for example, the cavity could be formed closed with the aid of a cover, closure, stopper or similar component. Consequently, by means of a modular-independent defined design mode in conjunction with the aforementioned interface definition / convention, a component or component production with added value that is particularly practical and also has a flexibly rationalizable design is made possible.Furthermore, the novel modular design of the locking-locking-actuator system provides, by way of example, a particularly advantageous rational option for repairing or replacing only the locking-actuator system, i.e. a possibly defective electromagnetic sub-component of the sought-after motor vehicle wheel brake, as required. In other words, product sustainability is promoted by repair friendliness, i.e. resource consumption is reduced according to the invention.In particular, each parking brake locking module can be pretested, i.e. tested individually for its correct function already during or after its production by and during a responsible delivery operation. Consequently, a particularly highly qualitatively secured wheel brake assembly is made possible in conjunction with a particularly lowered failure rate, because the delivery of functionally tested locking actuators is easily made possible. Consequently, a favorable and resource-saving and targeting contribution for a 100% reliable function of the parking brake function of a motor vehicle wheel brake is also provided in this respect.In a further embodiment of the invention, it is basically defined that the parking brake locking actuator cooperates with a wheel, preferably a wheel brake actuating device train, which is basically defined in a manner mounted in a rotationally driven manner by electric motor. The wheel can be present as a gear transmission component of a geared motor drive train (MGU motor gear unit of an electromechanically actuatable motor vehicle wheel brake). In order to reduce necessary locking forces, i.e. the transverse force stress of the parking brake system by utilizing a transmission effect, the wheel (locking wheel) is arranged close to the actuating drive (i.e. as far away from the output as possible) and, for example, arranged laterally offset thereto, preferably parallel to a motor shaft or in the extension of the motor shaft. On its circumference, the wheel carries a ratchet toothing (formed in the manner of a stepper mechanism or watch-rest) and serves to detect a parking brake function by means of a positive engagement of the locking element which is guided (or articulated) in such a way that it can be switched over, i.e. at least partially displaced transversely thereto. The locking element can engage into the wheel by means of a switchable linear drive in such a way that the locking device is locked in a non-inhibiting manner by means of the impressed brake application force, and can be released as required.An embodiment of the electric parking brake lock actuator, defined in more detail by way of example, includes an electromagnetically switchable drive as part of the parking brake module. The displaceable locking element is permanently loaded with a defined elastic prestressing force (spring prestressing force) in such a way that it tends to always tend to braces, displace or remain in a normally unlocked (braked) state. This ensures for any case that a non-decelerated, i.e. a non-decelerated, service brake function of the motor vehicle wheel brake is present.A shiftably defined locking drive for the locking element comprises an electrical, namely electromagnetic, linear drive comprising at least one statically fixedly mounted arranged electrical coil and an armature on or in the subassembly as a component of the shiftably configured locking element which is guided in a relatively movable manner relative thereto.The linear drive defined as a result can be configured in a confusion manner according to the electromagnetically contactless lifting magnet principle which has basically proven itself as a switching magnet or alternatively as a proportional magnet (i.e. position-controllable). The electromagnetic linear drive can furthermore in principle offer, by means of current or voltage observation (observation of electrical coil supply or reading out of reverse induction in supply pauses) in conjunction with an electrical control or regulating unit, a quasi-integral ergoefficient electrically automated monitoring function in terms of the blocking element position, assessment of a locking system health, such as in particular by way of example, a simple integral function monitoring for the locking system.It is possible and expedient to provide the behavior or electromagnetic efficiency of the linear drive in a matched manner on the basis of air gap modelling. For this purpose, a special profiling-for example on the basis of flux guide body profiling, armature profiling, i.e. on the basis of geometric shape profile design (in particular unified, conical, conical or frustoconically modeled configuration is preferred) can serve in the magnetic circuit by way of example.A central plunger comprises at least one sliding guide and engages with a particularly illustrated latch engagement contour of the blocking element for switchable positive locking or into the wheel. The weight (gravitational force) of the relatively displaceable locking element and its spatial placement in a vehicle with respect to gravity g can influence the systemic actuating behavior as well as the dimensioning of the elasticity. For the purpose of influencing weight, it is therefore possible, by way of example, for a virtually cylindrically shaped anchor to be present in a relatively voluminous manner, i.e. with increased weight as required, or alternatively an anchor can be at least partially tubular or sleeve-shaped, i.e. substantially hollow and defined with a central hole for the purpose of receiving on the plunger / shaft of the locking element.The kinematic engagement of the transversely displaceably arranged locking element in the rotatably arranged (tooth) wheel can be effected directly or indirectly linked. For example, a gear-like articulation of the locking element can be provided for the purpose of imparting an increased locking force increase, which comprises one or more inserted gear components, articulation parts, or the like, such as, for example, one or more levers.With further reference to an electric geared motor drive train of a preferably designed electromechanically actuatable drum wheel brake, an engagement movement of the blocking element in the wheel enables, as desired, a switchable locking provided with no current inhibition or an unlocking provided with no current inhibition.For a system function of a parking brake locking module / the parking brake locking function that is ensured in a permanent and reproducible manner, increased precision or play-minimized component position in the interface between joined components is advisable. This task can be achieved by a coding if a pawl shaping / pawl contour is permanently and suitably oriented both in relation to and in relation to the shape, i.e. the contour of the desired engagement in the wheel and in relation to the submodule of the locking actuator, and thus contains a rotation prevention means. It is possible that the coding automatically prevents impermissible mismatch or impermissible misassembly.The interface coding can furthermore preferably be provided with a suitable and secured form-fitting guide (in particular a form-fitting linear guide) of the locking blade. A guide which is coded in particular in a rotationally fixed manner can be profiled-for example as a polygonal element (preferably as a profiled shaft such as a square with additional code) and integrally in the submodule between the locking blade and the module housing. The same applies in principle to an interface between module housing and wheel brake housing / MGU housing. For the purpose of providing an indirect guide, an inserted indirect bearing can be defined by way of example on the basis of a lever arrangement. It is also possible in principle for the aforementioned coding to be defined between a housing of an electric actuating device, wheel brake actuating device (MGU housing) and a component housing of the locking device.In the case of a more resolved single-part construction of the parking brake system (for example, without a module housing and with a locking element acting simply radially), it is possible for the simplest case for the coding to be present between a cavity in the adjusting device housing / MGU housing and a pin, guide projection or the like of the locking element. Examples of embodiments or designs that can be formulated as outlined in prototypes can be gathered from an attached drawing.The primary basic idea of the invention is the description of a functional locking assembly comprising an electromagnetic lifting magnet, which is pre-assembled to a certain extent as a parking brake locking system that can be handled independently and can be switched in translation. A further idea is that this parking brake locking system can be checked for correct component function at the end of its manufacture before final assembly takes place in a motor vehicle wheel brake. A particular interface can be defined in order to correctly, i.e. correctly position or mount the locking module in a carrier for the purpose of independent testing or for the purpose of final assembly of a vehicle wheel brake. For the purpose of positionally correct pairing, an interface profiling represented in a form-fitting manner between the components to be paired can be provided. For example, to represent a suitably coded assembly cooperation interface, each locking module is provided with a defined outer profile (cam, projection or the like), and the associated wheel brake component or an associated test carrier has an adapted inner profile (cavity) for preliminary testing.Consequently, a correspondingly coded locking module can be inserted in the correct position and form-locking manner into a suitably counter-coded module receptacle / carrier device on the basis of profiles assigned in a defined manner mutually paired. The module receptacle can be present indirectly or directly in an actuator transmission housing (MGU=motor component) of a brake actuating device. The described electrical coil can preferably be present, for example, as an immediately attached component of a printed circuit board of an open-loop and / or closed-loop control unit (ECU), or as a component of the subassembly / submodule. The first option enables an industrially split logistics according to the principle of a so-called "magnetic plug", in that the ring-shaped coil cooperates through an austenitic cylindrical dome component in a magnetically non-contacting manner with the associated armature of the translationally relatively displaceable locking element.Correct positioning, spacing and also, moreover, the positionally correct orientation between the locking element defined in a rotationally fixed and translationally displaceable manner and the wheel rotatably but translationally non-displaceable is to be ensured for the mutual cooperation and interaction. For this purpose, the invention defines a position orientation defined in a form-fitting manner on the basis of the subassembly described by way of example. This can be provided by means of a square on a shaft of the locking element, which can be arranged so as to be guided in a relatively displaceable manner indirectly or directly in the actuator transmission housing, so that an effective separation of tasks between the absorption of locking force, i.e. the absorption of transverse force on the one hand, and the mutual anti-rotation means on the other hand, is ensured. The blocking element is defined in a unloaded manner. Parasitic torque or transverse forces are absorbed in the actuating device without disturbing / loading an interaction in the module of the parking brake system.In a further embodiment of the invention, it is possible to provide an assignment, i.e. form-fitting coding, in a further development. In this context, it is possible for a first coding to engage between the locking element and the sub-module housing of the locking device and between the sub-module housing of the locking device and a wheel brake housing / MGU housing of a wheel brake actuating device.An advantageous method of producing the locking element is a metal cold forming method in a large series, and a simplified variation with respect to the tooth shape between blade / ratchet wheel with respect to codings, guide contours and / or locking contours is thus also possible.It is possible that the locking module is provided with an extruded metallic component housing. It is possible for this component housing to be provided with the described interface including the coding as an external profile. An angle coding is possible for the purpose of ensuring a correct position assignment or installation position. In the example shown, the position coding mentioned is defined by way of example by a flattened portion and by way of a corresponding mating contour in or on the transmission housing of an actuator actuating device (MGU). If, as defined above, a component housing is present which, for example, is also advantageously present as a pot or cup and can be defined for rationalized large-scale representation in a cold forming process from a steel sheet material or steel wire material, a particularly expediently defined interface profiling can be provided as an angle reduction with a suitable cooperation between contours.For fixing, i.e. fastening, the locking component / locking module to an adjusting device / MGU, a caulking method or alternatively a so-called clinching method is suitable, for example. In this case, a cup- or pot-shaped component housing can be fixed to size in a housing of a brake actuating device or in a wheel brake housing on the basis of a metered and force-locking relative displacement, i.e. with a component insertion or component pressing process into the MGU or brake housing.It is possible in principle, after pairing with a peripheral device, to provide a prepositioning and / or adjustment option during premounting fixation on the basis of an insertion process of the subassembly into a receiving cavity. This makes it possible, by way of example and not necessarily, to mutually coordinate and train all paired components electrically or by software using the electronic control unit. Finally, after positioning, a final caulking process is carried out for the purpose of permanently unreleasably fixing the subassembly on the basis of positive locking, so that impermissible manipulation is ruled out. An initialization, i.e. an electrical teaching process of the parking brake system in conjunction with the drive periphery, may follow.To maintain the caulking, it is advisable if the respective receiving housing is plastically deformed in such a way that it engages at least partially in a form-fitting manner for the purpose of holding it on the subassembly / submodule. The caulking is presented according to requirements and can be presented in a segmented manner in principle circumferentially for increased strength and tightness requirements or with a dosing advantage.According to an advantageous development of the invention, the parking brake assembly / submodule can be installed and installed efficiently on various motor vehicle wheel brakes if this prefabricated submodule is configured with a particularly ready-made interface according to the convention according to the invention. For this purpose, the interface configuration according to the plug-and-socket principle, paired by convention, on the basis of a plug-like plug-in projection, can be very particularly suitable. In other words and also more precisely, the parking brake assembly can provide a corresponding interface with a plug projection for insertion into a correspondingly coordinated receiving cavity (for example, for the purpose of positive insertion engagement. The brake unit may have a bore or special profile) of the motor-transmission assembly (MGU) or electrical brake actuator of the wheel brake.The positionally correct mounting of the submodule can be ensured in a simple manner according to another advantageous refinement of the invention if the protrusion has a module coding for orienting the submodule in a provided rotational position with respect to the motor-transmission assembly (MGU).The module coding is particularly simple in terms of design if the module coding has an out-of-roundness, preferably a flattened portion, arranged on the component housing and designed correspondingly to a recess in the motor-transmission assembly (MGU).Testing of the function of the submodule is particularly simple according to another advantageous refinement of the invention if the structural submodule has the open-loop and / or closed-loop control unit.The submodule is of particularly simple design if the elasticity is a compression spring and is designed to prestress the blocking element.According to another advantageous refinement of the invention, the movement of the blocking element requires a particularly small installation space if the locking actuator comprises an electromagnetic linear drive.Industrial value accumulation is improved if the electromagnetic linear drive has, on the one hand, a statically fixedly arranged electrical coil (mounting on a housing and / or the relevant printed circuit board of the open-loop and / or closed-loop control unit), and a magnet armature as a fixed component of the locking element of the associated subassembly / submodule, which element is guided in a manner such that it can be displaced relatively in a limited translatory manner.For quality assurance on the basis of a variable function check option for the parking brake submodule, it contributes if the coil is either present jointly with the subassembly mentioned, on the one hand, or alternatively forms a structural unit jointly with the open-loop and / or closed-loop control unit, on the other hand.A mass-production industrial assembly sequence is particularly rationalized if the coil is formed as a component for mounting an electrical board by the open-loop and / or closed-loop control unit.Handling and mounting of the locking actuator on peripheral components, such as in particular on or in an engine-transmission assembly, is particularly simple if the locking actuator has a pot-shaped or cup-shaped component housing.A secure, permanent and also current-free, electrically releasable, retaining form-fit connection with low locking forces is made possible according to an advantageous development of the invention if an engagement end of the locking element is curved in the form of a claw or hook. The cooperation of this locking claw is in this case in detail such that its engagement end is shaped for secure positive locking with the wheel in the braced parking brake state such that it can engage behind a tooth of the wheel which is profiled accordingly in the shape of a hook without slipping out in an undesirable manner.A position of the locking element in the locking actuator secured against rotation (about its own axis) can be ensured according to an advantageous development of the invention if the locking actuator and the locking element have a locking element coding for orienting the locking element in a provided rotational position.According to an advantageous further development of the invention, the locking element coding is designed to be particularly simple in terms of construction if the locking element coding has corresponding profiling such as non-roundness, preferably flattened portions or impressions, of the locking element and of the locking actuator.To further simplify the construction of the blocking element coding, it contributes according to an advantageous development of the invention if the blocking element has a shank and if the shank has the blocking element coding.According to an advantageous further development of the invention, a novel automotive parking brake locking system can be produced by an electrically actuatable motor vehicle wheel brake comprising an aforementioned parking brake.According to an advantageous further development of the invention, the mounting of the locking device is particularly simple if a locking actuator, a locking element and an elasticity that prestresses the locking element are combined to form a submodule in a manner that can be handled independently and if this submodule is subsequently fastened to an engine-transmission assembly (MGU) of a motor vehicle wheel brake in the intended position with respect to a rotatable wheel.An industrial reject rate-already before module processing-can be displayed in a reduced manner on the basis of monitoring with function tests according to requirements, in that preferably each assembled submodule is pretested before its further processing / delivery, or before its peripheral fastening, namely for example on the engine-transmission assembly (MGU). This is made possible because the subassembly / submodule is paired +electrically and mechanically with, for example, a test device, open-loop and / or closed-loop control unit, dummy periphery or the like for test purposes, for the desired fixing functions-such as, in particular, for stroke length-to be tested or set.In accordance with an advantageous further development of the invention, it contributes to the coordinated, simplified and thus adjustable organized mounting of the submodule if the attachment of the submodule to the motor-transmission assembly (MGU) is carried out stepwise under monitoring (operator or image processing possible) by prepositioning by means of force-locking pressing in, fine adjustment as required, and subsequent force-locking caulking.To further simplify processing / application of the submodule, it contributes, according to another advantageous development of the invention, if at least one component or a plurality of components comprising the coding in the region of a) module coding and / or in the region of b) blocking element coding is produced in a metallic forming process such as, in particular, a cold forming process (sheet metal forming or solid forming from metallic wire material, for example forward extrusion or reverse extrusion is possible). The base component of the component housing, the locking element and the armature represent, by way of example, a typical metallic press part, such as in particular a metallic extrusion part, and the dome component typically represents an austenitic sheet metal formed part, such as in particular an austenitic sheet metal deep-drawn part. A peripheral housing for receiving the fixing device is usually a cast part (metal casting material such as, in particular, light metal casting material or plastic injection-molded material is conceivable in principle) or a metallic extrusion.The invention permits numerous embodiments. To further clarify its basic principle, a plurality of these are illustrated in the drawing and are described below. This shows in FIG. 1 reduces in principle and by way of example an electric motor vehicle wheel brake 50, which is configured as an electric drum brake including integral electric brake load sensor system 57, with the brake drum removed, FIG. 2 shows schematically, simplified, an electrically parking-brake vehicle axle comprising two electrical wheel brakes 50, 50' with electrical parking devices 1, 1' which are connected to an electronic brake control unit ESP-ECU, and, on a slightly enlarged scale, also illustrates a drive train 2 as a component of an engine-transmission assembly (MGU) 27 of the motor vehicle wheel brake 50, FIG. 3 shows, in principle, slightly enlarged perspective, individual components of the motor-transmission assembly (MGU) 27 from FIG. 2, FIG. 4 is a schematic enlarged sectional view of an advisable variant of a sub-assembly / sub-module 10 of an electric locking device 1, comprising an electromagnetic linear drive 35 as an electric locking actuator 5 for the locking device 1 according to FIG. 1 in a release position I, FIG. 5 shows, in a similar illustration to FIG. 4, a subassembly 10 which in principle is further designed in a varied manner by way of example, FIG. 6 shows an exemplary variant of a subassembly 10 without a drive train 2 / periphery in enlarged perspective partial section, suitable for use as a submodule 10 of a locking actuator 5, in particular for insertion-mounting into a motor vehicle wheel brake 50 according to FIG. 1, in the release position I, FIG. 7 shows the exemplary subassembly / submodule 10 according to FIG. 6 without drive train 2 with locking element 4, shown in a translatory offset manner, in its locking position II (locking actuator 5 is shown with actuating stroke Δ as a result of electrical coil energization), FIG. 8 shows, by way of example, in perspective and in principle greatly enlarged, a locking element 4 which can be implemented in an rotationally secured manner by way of example for a subassembly / submodule 10 as in FIG. 6, comprising a positively locking locking element coding 41, FIG. 9 is an enlarged view of a possible embodiment of a subassembly / submodule 10 with a basically plug-type plug-in interface 24, including exemplary module coding 30, FIG. 10 shows a perspective view and slightly enlarged only of the base component 12 with insertion interface 24 of a component housing 11 as in FIG. 9, and comprising the exemplary module coding 30 as a flat section of a projection 25 in the manner of a key surface, FIG. 11 shows an exemplary embodiment on the basis of an enlarged perspective partial section or partial view of a drive train region 2 of a mounted engine-transmission assembly (MGU, 27), as in FIG. 2, including an exemplary inserted fixing device 1, in the configuration as an inserted subassembly / submodule 10, comparable to FIG. 6 with stop in release position I (adjusting stroke Δ=0), FIG. 12 shows the embodiment as in FIG. 11, in blocking position II with interlocking engagement behind it, i.e. in the non-powered locking position, by means of tooth / claw interlocking engagement between wheel 3 and locking element 4, FIG. 13 shows various details or embodiments in combined drawing illustration a) relating to an encoded plug-in plug-in interface 24 between subassembly 10 and receiving cavity 28 in an associated receiving component 26, or b) proposal about the recommended blocking element encoding 42 in a component housing 11, wherein the proposals a) or b) need not be present explicitly combined in a savatory manner on the basis of common realization, but (as applies in principle to all features, embodiments, i.e. disclosure contributions), in principle any desired sub-combinations and arrangements are possible which may be present in any desired combination, FIG. 14 shows a sketch with a partially sectional illustration, in principle, enlarged, over a preferred embodiment including plug-type plug-in interface 24 with caulking fixing, with enlarged and partially illustrated cross section through a pressure-sensitive peripheral component (housing preferably formed from aluminum material), namely in particular a motor-gear assembly (MGU, 27) with fixing assembly 10 fixed segmentally caulked thereto in release position I, including with suitable punch 60 as pressing / forming / fixing tool on the basis of a pressing force F (drawn in the figure head), and FIG. 15 shows a perspective and frontal view, approximately to scale, of the preferred punch 60, as in FIG. 14, inclusively interrupted, i.e. intermittently circumferentially and axially directed profile projections (3 in pieces) 61, 61', 61" as material displacement / caulking cams defined as suitably profiled, which are consequently interrupted by 3 recesses 62, 62', 62" for the purpose of gently introduced forming with sensitive receiving component 26.FIG. 1 shows a locking system 1 as part of a motor vehicle wheel brake 50 designed as a drum brake. The wheel brake 50, which can be driven electrically or otherwise by a drive train 2, is defined here coaxially with respect to a symbolized wheel rotational axis WA. The wheel brake 50 comprises two friction linings 51, 52 which are mounted in a rotationally fixed and relatively displaceable manner and which can be displaced with respect to the brake drum. The friction linings 51, 52 are arranged such that they can be spread apart on the basis of an actuator system with an actuating device 56 (configured as a spreading device in the case of a drum brake). For this purpose, the friction linings 51, 52 are mounted on a carrier 53. For the purpose of displacing the friction linings 51, 52 back, there are used, elastically prestressed, defined (restoring) restoring rollers 54, 55, with which the elastic prestressing is imposed in the direction of the brake release position (radially inward). The mentioned adjusting device 56 is located between the friction linings 51, 52, which can be defined in principle as desired and very particularly by way of example with an electrical, electromechanical, hydraulic, mechanical or hybrid energy supply and, in the electromechanical drive train configuration, as an expanding device Incl. The method may be performed in a red-trans conversion (preferably with a nut-spindle assembly arranged in a non-self-locking manner). By means of the adjusting device 56, the friction linings 51, 52 can thus be braced radially outwards against the not-shown brake drum for the purpose of wheel brake engagement on the basis of opposite translatory relative displacement. The preferred electric wheel brake actuator system is furthermore preferably such that the actuating device 56 is connected in a drive-driven manner to an engine-transmission assembly (MGU) 27 arranged in multiple stages and constructed in a highly compressed manner, in the form of a gearwheel drive as a receiving component 26.FIG. 2 shows exemplary details of the motor-transmission assembly (MGU) 27 as the receiving component 26 in an enlarged illustration of an adjusting device 56 schematically outlined in an inclusive manner in an embodiment as a spreading device. The motor-gear assembly 27 is basically suitable and intended to pass through an opening in the support 53 and, when assembled, to close said opening as its cover 9. The wheel brake 50 is consequently configured in a comparatively repair-friendly manner. For this purpose, mutually suitably configured holding interfaces with fixing means between carrier 53 and MGU 27 are used. The MGU 27 in turn comprises the electric rotary drive train 2, namely an electric motor with a wheel transmission, and, if desired for braking, serves for driving the adjusting device 56. In the figure, the motor axis is basically defined and aligned coaxially in alignment with the axial direction Ax, such as in particular parallel to an expansion axis Ax' of the friction linings 2, 3, or vice versa, so that an electric motor housing is arranged largely parallel to the carrier without having to provide special transmission or deflection means. Directed orthogonally at right angles (i.e. radially R) to the axial direction Ax of the rotating rotary drive, the electric locking device 1 is arranged in the configuration as an electric parking brake EPB with a locking function defined in a non-positive manner. The translatory relative displacement of a locking element 4 (lock-like latch), which is accordingly allocated so as to be offset orthogonally to the motor rotation axis Ax, accordingly follows along a displacement axis which is to be outlined with R in the present case.FIG. 3 shows, in more detail, enlarged and basic components of the drive train 2 of the engine-transmission assembly 27 from FIG. 2 in cooperation with the locking device 1. As shown, the wheel 3 can be present on or with, in particular separately rotationally fixed on, the motor shaft of the drive train 2 in the vicinity of a drive pinion, so that the wheel 3 in principle participates in a drive rotation or release rotation of the drive train. The wheel 3 itself can serve for the commercial conversion or communication of drive torque which is input in a rotationally driven manner. In the embodiments according to the drawing, however, the wheel 3 does not transmit any drive torque, but rather serves exclusively for the rotary lock as a specially profiled engagement element close to the drive for the purpose of a positive rotary lock against undesired release. In this case, the special profiling with undercut can in principle be arranged in such a way that, if required, it could in principle be re-tensioned with allowance with rotational drive in the clamping direction, because the locking element 4 could be forced out of engagement in a round manner by rotational drive of the wheel 3 with a given profile (so-called "latch-type ticker"), whereas self-action release on the basis of the profile / undercuts is prevented categoristically.In principle, the wheel 3 could be defined as any rotationally fixed component even anywhere on one of the gear wheel axles. However, because the applied torque in conjunction with the reduction gear is lowest close to the motor, this is excellent for a close-to-motor placement of a locking engagement. Basically similar results for reasons of construction space compression, namely for the purpose of reduced structural width or reduction in overall length, with equally rigidly defined placement. It is advantageous if the wheel 3 is placed on the motor shaft with the shortest possible projecting motor wavelength, i.e. reduced overhang, and largely directly adjacent between the motor body and the transmission drive pinion. The motor shaft comprises, side by side, a pair of wheels comprising the spur-toothed wheel 3 and a helical pinion. In FIG. 3, a radial locking engagement between locking element 4 and wheel 3 is therefore substantially aligned, for example, with a meshing toothed gear engagement of one or more adjacent wheel gear stages. As shown, a wheel stage such as, in particular, preferably also allocated on the output side, or in combination with the like, one or more planetary gear stages is quite fundamentally considered as the transmission stage.The locking device 1 of excellent design includes, on the one hand, the wheel 3 which is rotationally placed in the motor-transmission drive train of the MGU 8 and driven along with it and is suitable and intended for positive engagement cooperation with the assigned bolt-like locking element 4, which is switchable or position-controlled by an electromagnetic linear locking actuator 5. In this context, the electric locking device 1 automatically or if desired allows a non-energized locked state of the actuating device 56. According to the invention, an electric wheel brake 50 is locked in a clamped manner for the purpose of the locking function and kept free of current, because the adjusting device 56 is supported, to a certain extent, downstream with corresponding holding reaction force (which is placed under drive) via wheel 3 and locking element 4 on the housing of the receiving component 26. The said flow of holding force is finally closed by a torque-proof brake holder or by a torque-proof carrier of the drive train 2 / of the wheel brake 50, which is braced in an inherently ring-shaped manner.FIG. 4 illustrates, in principle, on the basis of an enlarged sectional diagram, some design solution proposals for an embodiment of a sub-assembly / sub-module 10 relating to the modular and plug-in linear actuator / locking actuator 5, 35 of a fixing device as in FIG. 3. The coil 36 is in principle mounted so as to be axially non-displaceable. For this purpose, it can be mounted fixed on, in, in or in the environment of an electrical open-loop and / or closed-loop control unit 7. The coil 36 is electrically addressed by the electronic control unit 7 and is electrically connected to the latter for this purpose. The locking element 4, which is supported in a translatory manner so as to be guided in a limited manner relative to the displacement, holds an armature 8 which is suitable and intended to cooperate electromagnetically with the coil 16 in such a way that the locking element 4 is automatically impressed with an adjusting force against the prestressing force / restoring force RS of the elasticity (compression spring) 6, if desired / if necessary, in order to execute a locking stroke / actuating stroke Δ for positive engagement in the wheel 3 (locking position II). In short, the linear drive 5, 35 formed therewith serves in principle for the translatory relative displacement drive of the locking element 4, starting from a non-energized release stop position I into a locking stop position II with a positive end stop on / in the wheel 3.In the de-energized release stop position I, as illustrated according to FIGS. 3, 4, 5, 6, 11, 14, the blocking element 4 is seated on a component-housing-side release stop 20 under the vectorally directed prestressing force RS of the elasticity. Acting on the locking element 4 (in addition to its own mass inertia or weight force and, if appropriate, a vibration excitation as a dynamic disturbance variable) is the constant and permanent elastic prestressing force RS of the prestressed elasticity 6.A sub-assembly 10 / sub-module 10 can in principle comprise a component housing 11 having a base component 12, a collar 14 and a dome component 13. The component housing 11 or the base component 12 has an axially directed and plug-like plug-in interface 24, which consequently defines a projection 25. The plug-in interface 24 serves for precisely positionable plug-in receptacle and for fastening (inclusive anti-rotation) between the subassembly / submodule 10 and the receptacle component 26. The plug-in projection 25 is here exemplarily and excellently, as in the embodiments according to FIGS. 9 and 10, positively secured against rotation, coded, formed according to a plug-socket pairing principle, but can in principle also have different variable shape profiles than the rectangular or rectangular basic shape outlined in the drawing.FIG. 5 shows another possible embodiment of a subassembly / submodule 10 containing the electrical locking actuator 5 for the purpose of the fixing device 1 as in FIG. 3. Furthermore, the blocking element 4 shown has a blocking element coding 41, 42 for rotation-secured assignment and orientation between blocking element 4 and component housing 11.FIGS. 6 and 7 illustrate a further embodiment of a subassembly / submodule 10, which differs from FIGS. 4 and 5 in that the blocking element 4 is defined by a square-shaped shank 43 which is guided in a guide 15 of the component housing 11. An anchor 8 of the locking actuator 4 is fastened to the blocking element 4 by a separate fastening means 37, in particular by a securing ring. FIG. 6 shows the locking actuator 214 in the non-energized state-in release stop position I. FIG. 7 illustrates a locking actuator 5 in the energized state, i.e. parking brake actuated, in locking position II. In the energized state, the armature 8 of the locking actuator 5 is attracted by a coil 36 and displaces such that the blocking element 4 moves with stroke Δ out of the component housing 11 in the direction of the locking stop position II. In this case, the blocking element 4 moves against the counterforce of the elasticity 6 (blocking element 4 is extended). In the locking stop position II, the locking element 4 is suitable and determines that it searches for and finds positive engagement with the wheel 3 (cf. FIG. 12 ). By a corresponding shape engaging behind one another between locking element 4 and wheel 3, a permanent, to some extent, interlocked form fit between locking element 4 and wheel 3 can be ensured even after power has been switched off (actuator drive current / coil current), which meets the particularly high safety criteria for the permanent, reliable, non-energized holding of a parked, parking-braked motor vehicle.FIG. 8 shows, by way of example, in principle an advisable embodiment for a blocking element 4 of a subassembly 10 as per FIG. 6 or 7 in an enlarged perspective illustration. The locking element 4 has a locking element coding 41 with a groove-shaped indentation 44. The component housing 11 is designed to fit the indentation 44 and, for example, ensures a paired mating contour for the rotation-proof and correct assembly assignment of a locking element 4.FIG. 9 illustrates a submodule 10 as from FIGS. 6 and 7 in a side view. It can be seen here that the component housing 11 has a module coding 30. The coding is defined as an out-of-roundness 31, which can be designed as a key surface, flattened portion or similar. The part of the component housing 11 having the non-roundness 31 is shown in perspective in FIG. 10 for the sake of clarity. The coding on the basis of roundness 31 ensures, according to the key-keyhole principle with a correspondingly paired configuration, as shown by way of example in FIGS. 11 and 12, a receiving cavity 28 of a motor-gear assembly 27 that is positioned correctly and arranged in a rotationally secured manner and that is plug-in assembly between subassembly / submodule 10 and receiving component 26.FIG. 11 illustrates a latch actuator 5 for a receiving component 26 / motor-transmission assembly (MGU) in release stop position I, in which the foot 40 is removed from engagement with the wheel 3. FIG. 12 shows the locking actuator 5 fixed to the motor-gear assembly (MGU) 27 in the locking stop position II, in which the positive connection between the foot 40 of the locking element 4 is present by engagement with the wheel 3.FIG. 13 shows a module coding 30 of the component housing 11 in conjunction with an associated receiving cavity 28 in the motor-gear assembly (MGU) 27 and also an embodiment of a blocking element coding 41 on the basis of a blocking element 4 in the component housing 11. In this embodiment, the blocking element coding 41 has an impression formed as a flattened portion on a shank 43 of the blocking element 4.For mounting the locking device 1, a sub-assembly 10 comprising the blocking element 4 with the prestressing elasticity 6 is initially pre-assembled. The subassembly / submodule 10 with a plug-like projection 25 and with automatically correctly arranged mutual positioning on the basis of the coding is then inserted into a receiving cavity 28 of a receiving component 26. This results, to a certain extent, automatically in the appropriate positioning between rotatable wheel 3 and locking actuator 5 in a defined allocation on engine-transmission assembly (MGU) 27 of motor vehicle wheel brake 50. When pre-assembly and pairing a sub-module 10 with a testing device having a control and / or regulating unit 7, the correct function of a sub-module / sub-module 10 can be checked before delivery, so that, according to the invention, a very rationally increased product safety is ensured. The attachment of the sub-module 10 to the motor-transmission assembly (MGU) 27 is effected by force-locking press-fitting and subsequent form-locking caulking. For improved metering, the caulking is defined in segmented fashion using a special shaping tool.List of reference characters1 Electrical locking device 2 Drive train 3 Wheel 4 Locking element 5 Locking actuator 6 Elasticity 7 Open-loop and / or closed-loop control unit (ECU= El Control Unit; WCU= Wheel Control Unit) 8 Armature 9 Cover 10 Subassembly / submodule 11 Component housing 12 Base component 13 Dome component 14 Collar 15 Longitudinal guide 16 Through bore 17 18 19 20 Release end stop 21 Seat 22 Wall 23 24 Plug-in interface 25 Projection 26 Receptacle components 27 Motor-gear assembly 28 Receptacle cavity 29 30 Module coding 31 Non-roundness 33 34 35 Linear drive 36 Coil 37 Fastening means 38 39 40 Foot 41 Locking element coding (on the locking bar side) 42 Locking element coding) component housing side) 43 Shaft 44 Groove-shaped form 50 Motor vehicle wheel brake 51 Friction lining 52 Friction lining 53 Carrier 54 Spring element 55 Spring element 56 Adjusting device 57 Brake load sensor system 58 59 60 Plunger 61, 61', 61" Profile projection 62, 62', 62" Cutout Ax Axial direction R Radial direction T Tangential direction RS Restoring force I Release position II Locking position C Camera-assisted automated industrial image (data) processing (KI-supported) / TQM WA Wheel rotational axis S Air gap R Rotation (drive)+ application (rotational) direction / release (rotational) direction Δ StrokeReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 100 54 471 A1

[0005] DE 10 2020 213 916 A1

[0006] DE 197 50 420 A1

[0007] EP 1 032 773 B1

[0008]

Claims

Electrical locking device (1) for locking a rotating drive train (2) which has a wheel (3) which is defined in a basically rotatable manner and electrically lockable as required, having a locking element (4) which can be displaced relative to one another to a limited extent for the purpose of electrical locking and holding it in a non-powered manner by means of a positive engagement in the wheel (3), having an electrical locking actuator (5) for the purpose of translatory limited displacement of the locking element (4) from a release position I into a locking position II on the basis of actuator force imposed in a defined manner, and having a definedly prestressed elasticity (6) which permanently elastically acts on the locking element (4) with restoring force RS in order to fix the unactuated locking element (4) in a basic manner in the release position I out of engagement, or to shift the locking element (4) back, if desired, starting from the locking position II into the release position I, and with an electronic open-loop and / or closed-loop control unit (7; ECU, WCU) which is assigned to the locking actuator (5), and wherein the electrical fixing device (1) defines a subassembly / submodule (10) which is arranged in a combined manner.Electrical fixing device (1) according to Claim 1, characterized in thatat least two components of the locking actuator (5), namely in particular the blocking element (4) and the elasticity (6), are designed in a pre-assembled manner as a constituent part of the subassembly / submodule (10).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the subassembly / submodule (10) has a component housing (11).Electrical fixing device (1) according to Claim 3, characterized in that the component housing (11) is constructed and preferably has at least one base component (12) and at least one cup-shaped dome component (13).Electrical fixing device (1) according to Claim 4, characterized in that the component housing (11), such as in particular the base component (12) and / or the dome component (13), is provided for receiving, mounting, guiding and / or abutting the locking element (4), wherein furthermore preferably the locking element (4) is longitudinally displaceable to a limited extent indirectly or directly on or in the base component (12) and / or indirectly or directly on or in the dome component (13).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the component housing (11), or the blocking element (4), or both, is formed as a cold-formed metal part, such as in particular as a cold-formed striking part or cold-formed extruded part.Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the blocking element (4) extends through a central through-bore (16) of the base component (12), and in that preferably both parts (4, 12) are secured against rotation relative to one another and are joined in a longitudinally guided manner (15).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the release position I is defined in that the component housing (11) forms a release end stop (20) for the blocking element (4) and a seat (21) for the elasticity (6), and wherein the elasticity (6) is elastically clamped permanently between the seat (21) and a support on the blocking element (4) in such a way that the blocking element (4) in its release position rests automatically prestressed on the release end stop (20).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the elasticity (6) is present as an elastically prestressed compressed compression spring element, wherein the elasticity (6) is preferably formed as at least one metallic helical spring.Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the elasticity (6) is arranged so as to be guided at least partially within a wall (22) of the stepped through bore (16) of the component housing (11), and in that the component housing (11) is preferably present so as to pass centrally through the blocking element (4).Electrical locking device (1) according to one or more of the preceding claims, characterized in that, for the purpose of axially coordinated pairing between the subassembly / submodule (10) and the receiving component (26), an insertion interface (24) including an end stop is defined in such a way that the subassembly / submodule (10) is equipped with at least one plug-like projection (25) for insertion, which is positive-locking and preferably limited, into a receiving cavity (26) of the receiving component (26).Electrical locking device (1) according to one or more of the preceding claims, characterized in that the base component (12) defines the plug-like projection (25) and the collar (14) at a distance as an insertion interface (24) in such a way that the ensemble is thereby subjected to an automatically limited housing end stop as an ease of assembly when the subassembly / submodule (10) is correctly inserted into the receiving cavity (28), in particular the motor-gear subassembly (27).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the subassembly / submodule (10) and the receiving component (26) have, via a module coding (30), for positively rotationally fixed placement and / or fixing of the subassembly / submodule (10 in a defined rotational position relative to the receiving component (26), namely in particular in relation to the motor-transmission subassembly (MGU, 27).Electrical fixing device (1) according to Claim 13, characterized in that the module coding (30) is positively locking, and permits a positionally accurate pairing between the component housing (11) and the receiving component (26) on the basis of corresponding profiling, which in particular, by way of example, comprises a profile recess which furthermore, by way of example, contains a designed runout (31), namely preferably a flattened portion.Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the subassembly / submodule (10) integrates the electrical open-loop and / or closed-loop control unit (7), or vice versa.Electric locking device (1) according to one or more of the preceding claims, characterized in that the locking actuator (15) integrates an electromagnetic linear drive (35).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the electromagnetic linear drive (35) has an electrical coil (36) which is arranged such that it cannot be displaced in translation and cooperates with an armature (8) which can be moved in relative directions, and wherein the armature (8) is accommodated in the dome component (13) such that it can be displaced in translation to a limited extent.Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the armature (8) is rotationally symmetrical and at least partially drilled, hollow, such as in particular tubularly profiled, with respect to its central axis, and in that the armature (8) is a one-piece component or a component of the blocking element (4) which is fixedly mounted with fastening means (37).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that a modified air gap S is formed between the armature (8) and the base component (12).Electrical fixing device (1) according to one or more of the preceding claims, characterized in that an open-loop and / or closed-loop control unit (7, ECU; WCU) having an electrical coil (36) has an independent subassembly (10) ("magnetic plug" principle), or in that a coil (36) is present as part of the subassembly / submodule (10), and in that the coil (36) is subsequently connected, namely in particular plugged in, to the open-loop and / or closed-loop control unit (123).Electrical fixing device (1) according to Claim 20, characterized in that the coil (36) is designed as a component for mounting a printed circuit board (in particular PCB=Print Circuit Board) of the open-loop and / or closed-loop control unit (7, ECU; WCU) soldered and / or plugged thereto.Electrical locking device (1) according to one or more of the preceding claims, characterized in that a foot (40) of the locking element (4) is profiled with an undercut, such as in particular exemplarily as a single tooth contour, and is curved in a hook-shaped manner in such a way that in the locking position II it engages behind an associated counter contour with an undercut on the wheel (3) in a positive-locking manner, and vice versa.Electrical fixing device (1) according to one or more of the preceding claims, characterized in that the component housing (11), such as in particular the base component (12) of the locking actuator (5) and the blocking element (4), have a defined mutual positioning via a mutually associated blocking element coding (41, 42) for the purpose of preventing the blocking element (4) from rotating.Electrical locking device (1) according to claim 23, characterised in that the locking element coding (41, 42) contains interlocking profilings such as runout, preferably key face, toothing, impression on locking element (4) and on component housings (11), in particular on the base component (12) of the component housing (11).Electrical locking device (1) according to claim 23 or 24, characterised in that the locking element (4) has a shank (43) which is placed somewhat centrally between the anchor (8) and the foot (40), and wherein the shank (43) has the coding (41) on the locking element side.Electrically actuatable motor vehicle wheel brake (50), comprising a locking device (1) according to one or more of the preceding claims 1 - 24.Electrically actuatable motor vehicle wheel brake (50), comprising a locking device (1) according to claim 26, characterised in that for fastening between the subassembly / submodule (10) and the receiving component (26) a releasable screw fastening or a non-releasable form-fitting fastening, such as in particular a taper or caulking, and furthermore in particular preferably a caulked (63) which is stamped on in a segmented manner, is defined.Method for mounting an electric locking device (1) according to one or more of the preceding claims, characterized in that a locking actuator (5) comprising a blocking element (4) and an elasticity (6) prestressing the blocking element (4) are pre-assembled in order to form a subassembly / submodule (10) which can be handled independently, and in that the subassembly / submodule (10) is subsequently inserted in a definedly adjusted relative positioning with respect to a rotatable wheel (3) on or in the drive train (2) of an engine-transmission subassembly (MGU, 27) of a motor vehicle wheel brake (50) and is finally fixed thereon in a releasable or non-releasable manner.Method according to Claim 28, characterized in that the sub-module (10) is checked for correct functioning at least once before it is fixed to the engine-transmission assembly (MGU) (27), that is to say after it has been preassembled, and wherein preferably a function check of a motor vehicle wheel brake (50) including the brake device (1) takes place together with the sub-assembly / sub-module (10) after pairing has been carried out.Method according to one or more of the preceding claims, characterized in that a non-detachable mounting and fixing between the sub-module / sub-module (10) and the receiving component (26) of a motor-transmission assembly (MGU, 27) is produced by force-locking plug-in pressing and subsequent force-locking pressing, such as in particular by caulking ductile metal material from a housing of the receiving component (26).Method according to claim 30 with caulking (63), wherein the mutual fastening is such that the caulked receiving component (26) engages positively and circumferentially or partially segmented at or via the projection (25) of the component housing (11), and wherein the housing of the receiving component (26) is preferably present annularly and segmented caulked.Method according to one or more of the preceding claims, characterized in that at least one caulking and / or module coding and / or blocking element coding is entered using cold forming methods.

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