CN111181352A

CN111181352A - Electromagnetic actuator

Info

Publication number: CN111181352A
Application number: CN201911086744.9A
Authority: CN
Inventors: H·芒; F·施赖伯; M·弗里斯; J·舒尔茨
Original assignee: SVM Schultz Verwaltungs GmbH and Co KG
Current assignee: SVM Schultz Verwaltungs GmbH and Co KG
Priority date: 2018-11-09
Filing date: 2019-11-08
Publication date: 2020-05-19
Also published as: DE102018128142A1

Abstract

The invention relates to an electromagnetic actuator for actuating a valve, comprising a housing, a core and a yoke which are arranged opposite to each other on or in the housing, a coil body which is loaded with at least one coil winding and is arranged in the housing and at least partially surrounds an armature space, an armature which is arranged in the armature space in an axially movable manner, and a socket part which is provided for inserting a corresponding plug and is arranged on an outer face of the yoke, wherein the yoke comprises at least one positioning part and the socket part comprises at least one positioning element.

Description

Electromagnetic actuator

Technical Field

The present invention relates to an electromagnetic actuator for actuating a valve. The electromagnetic actuator comprises a housing, a core and a yoke arranged opposite to each other on or in the housing, a coil body loaded with at least one coil winding and arranged in the housing and at least partially surrounding an armature cavity, and an armature movably arranged in the axial direction in the armature cavity. The electromagnetic actuator further includes a socket member provided on an outer end surface of the yoke portion for inserting a corresponding plug.

Background

A large number of different designs of such electromagnetic actuators are known from the prior art and are used for actuating linearly mechanically actuatable devices, such as flaps of valves.

The mode of operation of the electromagnetic actuator described by way of introduction is based on the so-called magnetic circuit, i.e. the closed path of the magnetic flux, which comprises a housing, a core, a yoke and an armature. When a voltage is applied to the coil winding, a current flows in the coil winding, thereby generating a magnetic flux in a magnetic circuit of the electromagnetic actuator. The magnetic flux exerts a force on the armature that moves the armature linearly in the axial direction.

Switching the electromagnetic actuator on to or off from the voltage source is simplified by the socket. Because of the socket piece, the process is carried out simply by plugging in and out a corresponding plug connected to a voltage source.

Usually, the yoke is machined by turning, i.e. in a cutting method. The turned workpiece always has rotational symmetry and can be formed with great precision, so that the surface of the turned workpiece is particularly well suited as a bearing surface for rotary or linear bearings. The turned yoke has a circular or ring-shaped outer end face.

The socket member is arranged and fixed on an outer end face of the yoke. When the electromagnetic actuator is mounted, a relative positional error or an orientation error of the socket member and the yoke portion may easily occur, which is undesirable.

Disclosure of Invention

The object of the present invention is therefore to provide an electromagnetic actuator which is improved with respect to the disadvantages and which can be produced inexpensively.

This is achieved according to the invention by an electromagnetic actuator.

The invention relates to an electromagnetic actuator for actuating a valve, comprising a housing, a core and a yoke which are arranged opposite one another on or in the housing, a coil body which carries at least one coil winding and is arranged in the housing and surrounds at least an armature space, an armature which is arranged in the armature space so as to be movable in the axial direction, and a socket part which is provided for inserting a corresponding plug and is arranged on one outer face of the yoke.

The housing, core, yoke and armature are components of a magnetic circuit that is created by energizing the coil windings. For the energization of the coil windings, the coil windings are subjected to a voltage. The socket allows simple connection of the electromagnetic actuator to the voltage source or simple separation of the electromagnetic actuator from the voltage source, for example for maintenance.

In a preferred embodiment, it is provided that the yoke has at least one positioning part and the socket has at least one positioning element, wherein the at least one positioning part and the at least one positioning element correspond to one another. The positioning member and the positioning element allow a simple mutual alignment of the socket and the yoke, thereby simplifying the mounting of the electromagnetic actuator.

In a further preferred embodiment, the yoke is formed in the form of a sintered molded part or is produced in a molding process, in particular by means of 3D printing, metal powder injection molding, selective laser melting or selective laser sintering. Sintering or forming processes are inexpensive manufacturing methods, whereby also almost any shaped workpiece can be manufactured in a single process step. A two-step machining of complex and expensive yokes by means of turning and milling can thus be avoided.

Furthermore, it is provided that the at least one positioning element of the socket is formed on an outer surface pointing towards the yoke, while the at least one positioning element of the yoke is formed on an outer end face of the yoke. In a mounted state of the electromagnetic actuator, an outer end surface of the yoke and an outer surface of the socket member contact each other. Accordingly, the positioning elements of the socket part and the positioning parts of the yoke part are formed on mutual bearing surfaces.

It is expedient if the yoke comprises a disk-shaped, in particular ring-disk-shaped, radial section and if at least one positioning element of the yoke is arranged in the outer edge region of the outer end face. Because of the arrangement at the edge, the plurality of positioning parts are spaced apart from each other, whereby a high accuracy can be obtained in the relative orientation of the socket and the yoke.

In an advantageous embodiment, it is provided that the yoke and the socket each have a plurality of, preferably four, corresponding positioning parts and positioning elements, which are arranged opposite one another in pairs in the respective surface. The four mutually corresponding positioning parts and positioning elements can be easily handled when the socket part and the yoke part are relatively oriented and also ensure sufficient accuracy.

It is also advantageously provided that the positioning part of the yoke and the positioning element of the socket form a code which determines the relative positioning and/or orientation of the yoke and socket. This coding forces the socket and yoke to be arranged relative to each other only in exactly one way. In this way, installation errors during the installation of the electromagnetic actuator are eliminated.

It is also advantageously provided that the positioning means comprise at least one recess formed in the outer end face, while the positioning element of the socket piece has at least one projection projecting from the outer surface and engaging with said at least one recess. The recesses and the corresponding projections are proven and easy to handle positioning means or positioning elements. The recess of the yoke can be produced simply and inexpensively by means of sintering or molding.

The at least one groove may be open at a radially outer side thereof. Thereby facilitating the insertion of the respective protrusions. In addition, the respective projection may also project laterally from a radial edge of the yoke in the mounted state.

In addition, the edge of the circumferential wall may have at least one cutout corresponding to the slot of the yoke. It is clear that the yoke and the circumferential wall are oriented relative to each other such that the slot of the yoke is aligned with the cut-out. In this way, the projections inserted into the recesses can also be inserted simultaneously into the cutouts, thereby determining the relative orientation of the yoke and the circumferential wall, whereby the mounting of the electromagnetic actuator is further simplified.

It is provided in an expedient manner that the at least one projection projects laterally from the socket part. The laterally projecting projections can also correspond to the recesses of the edge if the socket only partially covers the outer end face of the yoke, i.e. if its radial extent is smaller than the yoke.

In a further embodiment, it is provided that the at least one recess has an undercut, with which a corresponding locking projection of the at least one projection engages in a form-fitting manner. The undercut and the locking projection are mechanisms which can be produced inexpensively by means of sintering or moulding methods and are also easy to handle in order to lock the socket part and the yoke part to one another.

The at least one projection is expediently in engagement with the at least one recess (Verstemmen) and/or is clamped in the at least one recess by means of a separate clamp. The socket piece is held securely in place on the yoke by means of a scarf joint or a clamping.

Ideally, four protrusions engage with four recesses. With four projections and four recesses, the socket is quadruplely fixed to the yoke, with the consequent strong hold in place.

In addition, it is advantageously provided in the proposal that at least one bearing surface is formed on the outer end face, on which bearing surface a fastening clip for fastening the electromagnetic actuator can be mounted. When the socket member tightly covers the outer end face of the yoke, the uncovered portion of the outer end face may form a bearing surface for securing the clip. For example, the retaining clip can be rotatably held on the valve and can clamp the electromagnetic actuator in order to bear against the bearing surface when the electromagnetic actuator is fixed on the valve.

It is provided in a smart manner that the socket part is adhesively bonded to the outer end face of the yoke part. As an alternative or in addition to the aforementioned fastening, a planar fastening of the socket part to the yoke is provided by this adhesive bond, which is a very strong connection between the socket part and the yoke.

It is also advantageously provided that the socket part has at least two electrical contacts for contacting electrically at least two corresponding electrical contacts of the plug, each electrical contact being connected to the at least one coil winding in an electrically conductive manner by a connecting line. Two electrical contacts are required to connect the two poles of a voltage source. In the case of a plurality of individual coil windings, a plurality of pairs of electrical contacts can be provided accordingly.

It is also provided that the socket part has a recess formed in an outer surface facing the yoke and a cover plate which is inserted into the recess and in particular at least partially covers the recess. The cover plate allows the socket to be secured to the yoke in two steps. When the cover plate is fixed to the yoke, it can prevent foreign matter such as, for example, debris from entering the electromagnetic actuator.

It is expedient to provide that at least one channel, in particular two channels, through which the two connecting lines extend, is formed in the yoke. The connecting leads pass through the channels on their way from the electrical contacts of the socket piece to the coil windings.

In many embodiments, it is provided that the at least one channel is open on its radially outer side. This simplifies the mounting of the electromagnetic actuator, since the connecting wires do not have to be guided through holes or the like. In the yoke mounted state, the passage is delimited at its radially outer side by a circumferential wall of the housing.

In a further preferred embodiment, it is provided that the armature comprises an armature body and an armature rod, which passes through the armature body and is fixed in the armature body. The two-piece construction of the armature allows for the use of a variety of different materials for the armature body and armature rod. The fixing of the armature pin can be effected, for example, by means of a press fit, form fit or adhesive bonding.

It is advantageously provided that the armature rod passes through the central bore of the core and the yoke. The armature rod projects outwardly from the core at least in one position of the armature, for example, in order to actuate a flap of a valve connected to the electromagnetic actuator. Two through-structures may also be used to support the armature within the electromagnetic actuator.

In a preferred proposed design, it is provided that the yoke has a tubular axial section which is integrally formed on and projects inwardly from the disk-shaped radial section. The yoke thus formed conducts magnetic flux well, thereby improving the magnetic circuit of the electromagnetic actuator.

The housing may have a cylindrical circumferential wall with a circumferential step, which is formed along an inner surface of an edge of the circumferential wall and in which a radial portion of the yoke is fixed. The step forms a bearing surface for the yoke and makes it easy to accurately position the yoke within the housing.

It is provided in an expedient manner that the radial portion of the yoke is pressed against a step of the axial wall. Thus, the yoke is held in the housing by press fitting.

In addition, it is advantageously provided that the coil body is fixed to the outer circumferential surface of the axial portion of the yoke portion and/or to the outer circumferential surface of the core portion. In this way, a dedicated mechanism for holding the coil body is superfluous, with the consequent low number of parts and simple mounting of the electromagnetic actuator.

The coil body can be held in place on the outer circumferential surface of the axial portion of the yoke portion and/or on the outer circumferential surface of the core portion in a force-fitting or shape-fitting manner. The coil body is fixed in the housing by force fit or form fit.

It is expedient to provide that the core has a cylindrical recess for receiving or supporting the armature body, which is formed in the inwardly directed end face of the core. In other words, the armature body can be inserted into the core in one position of the armature, whereby the axial length of the electromagnetic actuator is shortened.

In other designs, the recess, together with the axial portion of the yoke portion, defines an armature cavity for the armature body. The armature chamber defines the stroke of the armature and thus of the electromagnetic actuator.

The core and yoke are preferably axially spaced from each other. By means of the axial spacing, the stroke of the armature is adjusted. In addition, the axial spacing prevents close proximity magnetic flux between the core and the yoke.

Drawings

In the drawings, an embodiment of the invention is shown, particularly schematically, in which:

figure 1 shows a schematic cross-sectional view of an electromagnetic actuator according to an embodiment of the invention,

figure 2a shows a schematic perspective view of the electromagnetic actuator as shown in figure 1,

figure 2b shows an end side schematic top view of the electromagnetic actuator as shown in figure 1,

FIG. 3 shows a schematic perspective view of a socket member of the actuator shown in FIG. 1, an

Fig. 4 shows a perspective view of a yoke of the actuator as shown in fig. 1.

Detailed Description

In the drawings, the same or mutually corresponding parts are respectively provided with the same reference numerals and are therefore not described again unless inappropriate. The disclosure contained throughout the specification may be applied to the same components with the same reference numerals or the same component names according to meanings. The orientation specifications selected in the description, such as, for example, up, down, sideways, etc., also relate to the figures described and shown immediately above and are intended to be applied to the new orientation according to the meaning when the orientation changes. Furthermore, individual features or combinations of features from the embodiments shown and described can also be individual themselves, inventive or a solution according to the invention.

Fig. 1 shows an electromagnetic actuator 1, which is used, for example, to actuate a valve. The electromagnetic actuator 1 first comprises a housing 12. The housing 12 has a cylindrical circumferential wall 13 with a circumferential step 14, which is formed along the inner side of the axial edge of the circumferential wall 13.

The electromagnetic actuator 1 further comprises a core 10 with a central bore, which is arranged on the housing 12 at one axial end of the housing 12. The core 10 also has a cylindrical recess 15 formed in an end face of the core 10 directed inwards.

Furthermore, the electromagnetic actuator 1 comprises a yoke 3, which is formed in the form of a sintered part or is machined in a molding method, for example by means of 3D printing, metal powder injection molding, selective laser melting or selective laser sintering, and is arranged in the housing 12 on an axial end of the housing 12 opposite the step 14. For this purpose, the yoke 3 has a disk-shaped or ring-disk-shaped fastening 30, which is fastened, in particular pressed, in the circumferential step 14. In addition, the yoke 3 has a tubular axial portion 31 which is integrally formed on the ring-disk-shaped fixing portion 30 and projects inwardly from the ring-disk-shaped fixing portion 30.

The yoke 3 has a circular or ring-shaped outer end face 33 and has four positioning members 34 and one cylindrical groove 32 formed in the outer end face 33 of the yoke 3. At the outer end face 33, a bearing surface 36 is formed on which a fastening clip can be supported, which serves to fasten the electromagnetic actuator 1, for example, to a valve. The positioning part 34 of the yoke 3 is formed at the outer end face 33 of the yoke 3, more specifically in the outer edge region of the outer end face 33. Two channels 35 are also formed in the yoke 3, which channels are open on their radially outer side.

The core 10 and the yoke 3 are axially spaced from and opposed to each other. The recess 15 of the core 10 defines the armature cavity 11 together with the axial portion 31 of the yoke 3.

Furthermore, the electromagnetic actuator 1 comprises a coil 6 with a coil winding 61 and a coil body 60, which is fixed in the housing 12. The coil body 60 surrounds the armature chamber 11 and carries a coil winding 61. The coil body 60 is fixed to the outer peripheral surface of the axial portion 31 of the yoke 3 and the outer peripheral surface of the core 10. Specifically, the coil body 60 is held in place on the outer circumferential surfaces of the axial portion 31 of the yoke 3 and the outer circumferential surface of the core 10 in a force-fitting manner, but may alternatively or additionally be held in place in a form-fitting manner.

The electromagnetic actuator 1 further comprises an armature 2, which is movably arranged in the axial direction in an armature chamber 11. The armature 2 comprises an armature body 21 and an armature rod 20, which passes through the armature body 21 and is fixed in the armature body 21. The armature rod 20 passes through the central hole of the core 10 and the yoke 3 and is supported in the central hole of the core 10 and the support 5 of the electromagnetic actuator 1 fixed to the yoke 3.

The armature body 21 is arranged in the armature chamber 11, which in this way defines the axial travel of the armature 12.

The electromagnetic actuator 1 further comprises a socket member 4 arranged for insertion of a corresponding plug. The socket part 4 has at least two electrical contacts 44 for contacting two corresponding electrical contacts of a corresponding plug, each of which is electrically conductively connected to the at least one coil winding 61 by a connecting line. The connecting leads each extend through one of the passages 35.

The socket 4 has a recess 41 formed in an end face directed towards the yoke 3 and comprises a cover plate 40 corresponding to the recess 41, which cover plate is fitted into the recess 41 and at least partly covers the recess 41. The socket 4, in particular the cover plate 40 of the socket 4, is fixed to the outer end surface 33 of the yoke, specifically bonded to the outer end surface 33 of the yoke 3, in contact with the outer end surface 33 of the yoke. The cover plate 40 may have the at least two electrical contacts 44 mounted thereon.

The socket 4 has four positioning elements 43, which correspond to the positioning parts 34 of the yoke 3. The positioning element 43 of the socket 4 is formed on the outer surface 42 of the socket 4 facing the yoke 3. The positioning parts 34 of the yoke 3 and the positioning elements of the socket 4 are aligned in the

respective surfaces

33, 42. In this way, the positioning part 34 of the yoke 3 and the positioning element 43 of the socket 4 form a code which determines the relative positioning and orientation of the yoke 3 and the socket 4.

The positioning element 43 of the plug member 4 comprises four projections 43, each projecting laterally from the plug member 4 and from the outer surface 42 and having a locking projection.

The positioning member 34 of the yoke 3 includes four grooves 34 formed in the outer end face 33 and opened on the radially outer side thereof. The grooves 34 also have undercuts corresponding to the locking projections, respectively. Correspondingly, the axial edge of the circumferential wall of the housing 12 has four cutouts 16 corresponding to the recesses 34 of the yoke 3.

The groove 34 engages with the projection 43. Specifically, the locking projections of the projections 43 are in form-fitting engagement with the undercuts of the recesses 34, respectively. In this way, the projection 43 engages with the four recesses 34. Alternatively or additionally, each projection 43 may be clamped in the recess 34 by means of a separate clamp.

The yoke 3 for the electromagnetic actuator 1 is sintered or form-machined, i.e. by means of 3D printing, metal powder injection moulding, selective laser melting, selective laser sintering, etc. In other words, the yoke 3 is not manufactured by means of turning and milling, i.e. a machining method. The required grooves 34 and channels 35 of the yoke 3 can be machined more simply by sintering or forming methods than by cutting methods. The method of shaping the yoke 3 thus offers economic advantages over machining in two steps, for example turning and then milling.

In the following, the proposed possible features are presented structurally. The features presented by the following structuring can be combined with one another in any desired manner and can be incorporated in any combination in the claims of the present application. It is clear to the skilled person that the invention has been derived from a subject with minimal characteristics. In particular, the following presents several designs that are advantageous or possible, but not several of the possible designs of the present invention.

The present invention comprises:

an electromagnetic actuator for actuating a valve comprises a housing, a core and a yoke which are arranged opposite to each other on or in the housing, a coil body which is loaded with at least one coil winding and is arranged in the housing and at least partially surrounds an armature cavity, an armature which is arranged in the armature cavity in an axially movable manner, and a socket piece which is provided for inserting a corresponding plug and is arranged on an outer end face of the yoke.

The electromagnetic actuator as set forth in the preceding, wherein the yoke has at least one positioning part and the socket has at least one positioning element, wherein said at least one positioning part and at least one positioning element correspond to each other.

The electromagnetic actuator as described above, wherein the yoke is constructed in the form of a sintered molded part or is processed in a molding method, in particular by means of 3D printing, metal powder injection molding, selective laser melting or selective laser sintering.

The electromagnetic actuator as set forth in the foregoing, wherein the at least one positioning element of the socket is formed on an outer surface directed toward the yoke, and the at least one positioning part of the yoke is formed on an outer end surface of the yoke.

The electromagnetic actuator as described above, wherein the yoke comprises a disk-shaped, in particular ring-disk-shaped, radial portion, the at least one positioning part of the yoke being arranged in an outer edge region of the outer end face.

The electromagnetic actuator as described above, wherein the yoke and the socket each have a plurality of, preferably four, corresponding positioning parts and positioning elements, which are arranged in pairs opposite in the respective surface (33, 42).

The electromagnetic actuator as described above, wherein the positioning part of the yoke and the positioning element of the socket form a code determining the relative positioning and/or orientation of said yoke and socket.

The electromagnetic actuator as set forth above wherein the locating feature comprises at least one groove formed in the outer end face, the locating element of the socket member comprising at least one projection projecting from the outer surface and engaging said at least one groove.

The electromagnetic actuator as set forth in the preceding, wherein said at least one recess is open at a radially outer side thereof.

The electromagnetic actuator as described above, wherein the edge of the circumferential wall has at least one cutout corresponding to the yoke groove.

The electromagnetic actuator as set forth above, wherein said at least one projection projects laterally from the socket member.

The electromagnetic actuator as set forth in the preceding, wherein said at least one recess has an undercut with which a corresponding locking protrusion of said at least one protrusion is in form-fitting engagement.

The electromagnetic actuator as described above, wherein the at least one projection is nested with the at least one recess and/or clamped in the at least one recess by means of a separate clamp.

The electromagnetic actuator as described above, wherein the four protrusions are engaged with the four recesses.

The electromagnetic actuator as described above, wherein at least one bearing surface on which a fixing clip for fixing the electromagnetic actuator can be supported is formed on the outer end face.

The electromagnetic actuator as described above, wherein the socket member is bonded to the outer end face of the yoke.

The electromagnetic actuator as described in the foregoing, wherein the socket member has at least two electrical contacts for contacting electrically at least two corresponding electrical contacts of the plug, each electrical contact being conductively connected to the at least one coil winding by a connecting wire.

The electromagnetic actuator as described above, wherein the socket part has a recess formed in an outer surface directed towards the yoke and has a cover plate which is fitted into the recess and in particular at least partially covers the recess.

The electromagnetic actuator as described in the foregoing, wherein at least one channel, in particular two channels, through which two connecting wires extend, is formed in the yoke.

The electromagnetic actuator as set forth in the preceding, wherein said at least one passage is open on a radially outer side thereof.

The electromagnetic actuator as described above, wherein the armature includes an armature body and an armature rod, the armature rod passing through the armature body and being fixed in the armature body.

The electromagnetic actuator as described above, wherein the armature rod passes through the central bore of the core and the yoke.

The electromagnetic actuator as set forth in the foregoing, wherein the yoke has a tubular axial portion integrally formed to the disk-like radial portion and projecting inwardly from the disk-like radial portion.

The electromagnetic actuator as described above, wherein the housing has a cylindrical peripheral wall including a surrounding step portion that is formed along an inner side face of an edge of the peripheral wall and in which the radial portion of the yoke is fixed.

The electromagnetic actuator as described above, wherein the radial portion of the yoke is pressed in the step portion of the circumferential wall.

The electromagnetic actuator as described above, wherein the coil body is fixed on the outer peripheral surface of the axial portion of the yoke portion and/or the outer peripheral surface of the core portion.

The electromagnetic actuator as described above, wherein the coil body is held on the outer peripheral surface of the axial portion of the yoke portion and/or the outer peripheral surface of the core portion in a force-fitting or shape-fitting manner.

An electromagnetic actuator as hereinbefore described wherein the core has a cylindrical recess for receiving or supporting the armature body, the recess being formed in an inwardly directed end face of the core.

The electromagnetic actuator as described above, wherein the recess defines an armature cavity for the armature body with the axial portion of the yoke portion.

The electromagnetic actuator as set forth above, wherein the core and the yoke are axially spaced from each other.

The invention also comprises a method for producing a yoke for an electromagnetic actuator, in particular an electromagnetic actuator according to the invention, wherein the yoke is sintered or form-machined, in particular by means of 3D printing, metal powder injection molding, selective laser melting or selective laser sintering.

The claims, which are presently filed with the application and later, are broadly entitled to protection without sacrificing further claims.

If this or other features are to be indicated herein as advantageous for the purposes of the invention, but not decisive, in particular also in the recent examination of the relevant prior art, it is evident that the present endeavor is to make a statement that this feature is no longer present in the independent claims. Such sub-combinations are also encompassed by the disclosure of the present application.

It is further noted that the designs and variants of the invention described in the various embodiments and shown in the figures can be combined with one another in any desired manner. In this case, some features or a plurality of features can be interchanged at will. Such combinations of features are also disclosed.

The references stated in the dependent claims indicate further developments of the subject matter of the independent claims by means of the features of the respective dependent claims. However, they should not be construed as giving up individual specific protection to the features of the dependent claims cited.

Features disclosed in the specification or individual characteristics from claims containing a plurality of features may, at any time, be considered as essential to the invention, for the purpose of separating from the prior art, be incorporated in their entirety or into the subclaims, even when such features are described or achieve advantageous results with respect to other features.

Claims

1. An electromagnetic actuator (1) for actuating a valve, having a housing (12), a core (10) and a yoke (3), a coil body (60), an armature (2) and a socket (4), the core (10) and the yoke (3) being arranged opposite one another on or in the housing (12), the coil body carrying at least one coil winding (61) and being arranged in the housing (12) and at least partially surrounding an armature chamber (11), the armature being arranged movably in the axial direction in the armature chamber (11), the socket being provided for insertion of a corresponding plug and being provided on an outer face (33) of the yoke (3), characterized in that the yoke (3) has at least one positioning part (34), the socket (4) has at least one positioning element (43), wherein the at least one positioning part (34) and the at least one positioning element (43) correspond to each other.

2. Electromagnetic actuator according to claim 1, wherein the yoke (3) is constructed in the form of a sinter molding or is processed in a molding method, in particular by means of 3D printing, metal powder injection molding, selective laser melting or selective laser sintering.

3. The electromagnetic actuator according to any of the preceding claims, characterized in that the at least one positioning element (43) of the socket (4) is formed on an outer surface (42) directed towards the yoke (3), the at least one positioning part (34) of the yoke (3) is formed on the outer end face (33) of the yoke (3) and/or the yoke (3) comprises a disc-shaped, in particular ring-disc-shaped, radial portion (30), the at least one positioning part (34) of the yoke (3) being arranged in an outer edge region of the outer end face (33) and/or the yoke (3) and the socket (4) having a plurality of, preferably four, corresponding positioning parts (34) and positioning elements (43) respectively, which are arranged in pairs in respective surfaces (33,42) and/or the positioning parts (34) of the yoke (3) and the positioning elements (43) of the socket (4) The element (43) forms a code which determines the relative positioning and/or orientation of the yoke (3) and the socket (4).

4. Electromagnetic actuator according to any one of the preceding claims, wherein the positioning member (34) comprises at least one recess (34) formed in the outer end face (33), the positioning element (43) of the socket (4) comprising at least one projection (43) projecting from the outer surface (42) and engaging with the at least one recess (34).

5. Electromagnetic actuator according to any one of the preceding claims, wherein the at least one groove (34) is open on its radially outer side and/or the edge of the circumferential wall (13) has at least one cutout (16) corresponding to the groove (34) of the yoke (3) and/or the at least one projection (43) projects laterally from the socket part (4) and/or the at least one groove (34) has an undercut, with which a corresponding locking projection of the at least one projection (43) is in form-fitting engagement.

6. Electromagnetic actuator according to any of the preceding claims, wherein the at least one projection (43) engages with the at least one groove (34) and/or the at least one projection is clamped in the at least one groove (34) by means of a separate clamp and/or four projections (43) engage with four grooves (34) and/or the socket (4) is glued to the outer end face (33) of the yoke (3).

7. Electromagnetic actuator according to one of the preceding claims, characterized in that at least one bearing surface (36) is formed on the outer end face (33) on which a fixing clip for fixing the electromagnetic actuator (1) can bear.

8. Electromagnetic actuator according to any one of the preceding claims, wherein the socket part (4) has a cover plate (40) and a recess (41), which is formed in the outer surface (42) directed towards the yoke (3), the cover plate being fitted into the recess (41) and in particular covering the recess (41) at least partially, and/or at least one channel (35), in particular two channels (35), through which two connecting leads extend being formed in the yoke (3), wherein in particular the at least one channel (35) is open on its radial outside.

9. The electromagnetic actuator according to any of the preceding claims, characterized in that the housing (12) has a cylindrical circumferential wall (13) with a surrounding step (14) formed along an inner side of an edge of the circumferential wall (13) and in that the radial portion (30) of the yoke (3) is fixed in the step.

10. Electromagnetic actuator according to any of the preceding claims, wherein the radial portion (30) of the yoke (3) is pressed in the step (14) of the circumferential wall (13) and/or the core (10) has a cylindrical recess (15) for receiving or supporting the armature body (20), which is formed in an inwardly facing end face of the core (10).