DE102019130984A1 - Component for an electromagnetic actuator, electromagnetic actuator and method for manufacturing a component - Google Patents

Abstract

A component is proposed for an electromagnetic actuator (10) through which a central longitudinal axis (B) extends in its longitudinal direction, comprising an armature receiving section (102) for optionally receiving an armature unit (30), comprising a wall section (104) which has a Anchor receiving space (106) delimited on the circumferential side and has a receiving space base (110) which delimits the anchor receiving space (106) on the bottom side, teeth (112) being formed adjacent to one another in the circumferential direction with respect to the longitudinal axis (B) of the wall section (104) or with this wherein each of the teeth (112) has two circumferential flanks (114, 116) and extends in the direction of the longitudinal axis of movement (B) from a tooth root (118) to a tooth head (120).

Description

The invention relates to a component for an electromagnetic actuator according to the preamble of claim 1, an electromagnetic actuator according to claim 9 and a method for producing a component according to claim 10.

An electromagnetic actuator is usually composed of various components. An armature is arranged within the actuator so as to be adjustable along a central longitudinal axis of movement. The longitudinal axis of movement can reach through the actuator and thus also its components in the longitudinal direction. A component for an actuator can comprise an armature receiving section for optionally receiving the armature of an armature unit. The anchor receiving section can in turn comprise a wall section which delimits an anchor receiving space on the circumferential side and has a receiving space base which delimits the anchor receiving space on the bottom side. In and out of this anchor receiving space, an anchor unit is adjustable at least in sections.

In order to influence a magnetic force stroke characteristic and thereby the magnetic flux between two components of an actuator, the use of a control cone is known from practice. Such a control cone is arranged centrally to the longitudinal axis of movement and runs around it in an annular manner. One tilted surface of the control cone thus runs in the direction of the longitudinal axis of movement or the cone runs in the radial direction. This previous design of a control cone means that very thin material thicknesses are formed in the distal end region of the control cone. For this reason, components of electromagnetic actuators comprising a radial control cone have hitherto had to be manufactured by means of cost-intensive processes, for example by means of machining processes. In addition, the previously known radial, ring-shaped and one-piece control cone offers little design leeway for advantageously influencing the magnetic force stroke characteristic.

The invention is therefore based on the object of creating a component for an electromagnetic actuator which has the control function of the magnetic flux known from the control cone for influencing the magnetic force stroke characteristic, but which allows increased design leeway with the same use of space and can be manufactured more cost-effectively. In this context, an electromagnetic actuator and a method for manufacturing a component are also proposed.

The main features of the invention are specified in the characterizing part of claim 1 and named in claims 9 and 10. Claimed configurations are the subject matter of claims 2 to 8.

According to the invention, a component for an electromagnetic actuator is proposed, which is penetrated in its longitudinal direction by a central longitudinal axis of movement, comprising an armature receiving section for optionally receiving an armature unit, comprising a wall section which delimits an armature receiving space on the circumference and has a receiving space base which delimits the armature receiving space on the bottom wherein teeth are formed adjacent to one another in the circumferential direction with respect to the longitudinal axis of movement on the wall section or with this, each of the teeth having two circumferential flanks and extending in the direction of the longitudinal axis of movement from a tooth base to a tooth tip.

The two circumferential flanks can be designed in such a way that they are at least largely aligned in the circumferential direction, whereby a cone can be formed in each case in the circumferential direction. “At least largely”, viewed in the longitudinal direction of the component, should be understood to mean a pivoting of at least one flank relative to the radius by an angle of 45 ° to 0 °. The invention thus provides that the control cone, which has hitherto been designed as a closed ring and extending in the radial direction, can be replaced by a completely different configuration. Each of the individual teeth has its own cone, which now extends in the circumferential direction. As a result, a greater material thickness can be formed in the distal end area of each tooth or at the tooth head, compared with the known radial control cone. As a result, manufacturing processes for the component can be used which are less precise and therefore fundamentally more cost-effective than previously used machining processes. The teeth can be designed, for example, in the manner of a Hirth serration. The arrangement of the teeth on a component can also be referred to as a toothed ring.

The invention also offers decisive advantages from a constructional point of view. With previous control cones, the slope of its tilted surface could be changed in order to control the characteristic. There weren't many more constructive options. With the same use of space, considerably more design options are given by means of the invention. Not only can the surfaces of the teeth be tilted, for example the number of teeth or the size of the spaces between the teeth can also be changed.

The teeth can also be formed jointly with the wall section, so that they themselves form the wall section comprising the armature receiving space.

The teeth also lead to an end surface of the component being enlarged compared to a control cone extending in the radial direction, which provides an enlarged connecting surface for adjacent components. This enables a more solid connection.

A preferred embodiment of the component can provide that at least one of the circumferential flanks, preferably both circumferential flanks, has / have a course that is at least partially tilted in the circumferential direction. With this configuration, in particular with both tilted circumferential flanks, teeth with an obtuse head angle or circumferential flank angle (angle enclosed by the circumferential flanks) can be realized. The distal end area of the teeth is therefore less filigree. This enables a geometry with comparable functionality that can be produced using less precise manufacturing processes.

Alternatively or additionally, the component according to one of the preceding paragraphs can be characterized in that at least one of the circumferential flanks, preferably both circumferential flanks, has / have a flat surface profile. This is because the surface of previous control cones is curved at least in the circumferential direction. In contrast, a flat surface represents a simplified geometry which cannot be realized at all by a known control cone and which reduces the geometrical complexity of the component and thereby lowers manufacturing costs.

Alternatively or additionally, the component according to one of the preceding paragraphs can be characterized in that at least one of the circumferential flanks, preferably both circumferential flanks, has / have a simply curved or cambered surface profile. This configuration is also conceivable for an inner flank and / or an outer flank. This configuration can be used for a special characteristic control and can also be implemented on the teeth.

According to a development of the component according to the invention, at least one of the circumferential edges of the circumferential flanks intersects the longitudinal axis of movement. All peripheral edges preferably intersect the longitudinal axis of movement. A circumferential edge is that edge assigned to the circumferential flank which delimits the corresponding circumferential flank in the circumferential direction. As a result, the teeth have a course directed towards the longitudinal axis of movement, which allows a magnetic flux that is as interference-free as possible. In addition, in the areas of the teeth in which the magnetic flux jumps to an adjacent element or in which the component receives the magnetic flux, slim and magnetic flux-guiding geometries can be realized. As a result, teeth can be formed which can engage in identically formed teeth of a connection partner, for example this is advantageous in the case of the pole tube or pole tube section.

According to a further development, the component according to the invention can be designed in such a way that the two circumferential flanks together enclose at least one circumferential flank angle between 0 ° and 179 °, preferably between 30 ° and 90 °, particularly preferably 60 °. The circumferential flank angle itself lies in the tangential direction with respect to the circumferential direction. With an included angle of 0 °, the two circumferential flanks run parallel to one another. The angle of 60 ° in particular can be produced by means of a cost-effective method and nevertheless enables the magnetic field lines to be advantageously passed on, for example to an armature.

Alternatively or additionally, the component according to one of the preceding paragraphs can be characterized in that the teeth extend over a height between the base of the receiving space and the tooth head. In this way, separate teeth that are not directly connected to one another are realized, with each of the teeth having its own cone.

Alternatively or additionally, the component according to one of the preceding paragraphs can be characterized in that the depth extension of the teeth at the tooth root in the radial direction corresponds to the depth extension of the wall section in the radial direction. In this way, steps or shoulders that interfere with the flow of the magnetic field lines can be prevented, since the tooth root depth corresponds to the wall section depth. The wall section can therefore merge steplessly into the teeth.

According to a preferred embodiment of the component according to the invention, an inner flank and / or an outer flank of the teeth is / are designed to run parallel to the longitudinal axis of movement. If a tooth has a square base, it is delimited in the circumferential direction by the two circumferential flanks and in the radial direction on the inside by the inner flank and on the outside by the outer flank. The neighboring flanks abut one another and form an edge there.

In a further development of the component according to the invention, an inner flank and / or an outer flank of the teeth is / are radially tilted or designed to run radially conically. The geometry that can be realized by means of the invention is so flexible that, in addition to the cone formation in the circumferential direction, it can have a radially tilted outer flank so as to have a cone formation in the radial direction. The teeth can therefore unite two cones running orthogonally to one another in order to conduct magnetic field lines even more effectively.

According to a preferred embodiment of the component according to the invention, a bottom section is formed between adjacent teeth which lies in the plane of the bottom of the receiving space. Thus, there is an interdental space between adjacent teeth in such a way that their tooth roots are not in direct contact with one another. Filigree structures and tight spaces between adjacent teeth, as in the case of teeth that are directly adjacent to one another, are thus avoided, which enables improved manufacturability by means of cost-effective processes.

As an alternative or in addition, the component according to one of the preceding paragraphs can be characterized in that the teeth on the tooth tip side have a tooth tip tip, a tooth tip edge and / or a tooth tip plane.

Alternatively or additionally, the component according to one of the preceding paragraphs can be characterized in that it is a core, a core cover, a yoke, a pole tube section or a pole tube arrangement with a pole tube base section.

Alternatively or additionally, the component in the embodiment as a pole tube arrangement according to the preceding paragraph can be characterized in that the pole tube arrangement comprises, in addition to the pole tube base section, a preferably non-magnetic pole tube web section and / or a pole tube end section, which are arranged adjacent to one another along the longitudinal axis of movement, with one against the other directed end faces of adjacent sections, the teeth are formed, wherein mutually directed teeth of adjacent sections are formed interlocking. The above-mentioned enlargement of the end surface of the component leads to considerable advantages, especially in the case of a multi-part pole tube arrangement, compared with a control cone that extends exclusively in the radial direction. The meshing of the mutually directed teeth increases an effective connection area, which leads to a stronger connection between the adjacent parts without adversely affecting a magnetic field line flux. The teeth can serve as guide and / or centering elements when assembling adjacent pole tube sections.

Alternatively or additionally, the component in the embodiment as a pole tube arrangement according to one of the preceding paragraphs can be characterized in that each mutually facing end faces of adjacent sections each have a connection surface for connection to the adjacent section, the connection surface preferably being a material connection surface, more preferably a soldering surface, is a welding surface or an adhesive surface.

Alternatively or additionally, the component in the embodiment as a pole tube arrangement according to one of the preceding paragraphs can be characterized in that the pole tube end section forms an armature stroke limitation acting in the direction of the longitudinal axis of movement.

According to a further preferred embodiment of the component according to the invention, the component is at least partially a sintered part. Sintering is an inexpensive method and has not yet been able to be used for the production of components for electromagnetic actuators. The reason for this is the extremely stringent requirements for tolerances and geometrical accuracy. The proposed geometry according to the invention is considerably simplified compared with known control cones extending in the radial direction and avoids filigree areas which cannot be satisfactorily produced by means of sintering. Only then is it possible to use cost-effective manufacturing processes such as sintering.

According to the invention, an electromagnetic actuator is also proposed, comprising a coil unit, which has a winding that can be optionally energized, an armature unit, which has an armature, which by means of the winding energization along the longitudinal axis of movement B. is adjustable, and a component according to one of the preceding paragraphs.

The advantages already described above with regard to the component also result analogously for the actuator, to which reference is hereby made.

• - Bereitstellen eines Grünlings, welcher in seiner Längsrichtung von einer zentralen Bewegungslängsachse durchgriffen ist, umfassend einen Ankeraufnahmeabschnitt zur wahlweisen Aufnahme einer Ankereinheit, umfassend einen Wandungsabschnitt, welcher einen Ankeraufnahmeraum umfangsseitig begrenzt sowie einen Aufnahmeraumgrund aufweist, welcher den Ankeraufnahmeraum bodenseitig begrenzt, wobei an dem Wandungsabschnitt oder mit diesem Zähne zueinander benachbart in Umfangsrichtung bezüglich der Bewegungslängsachse ausgebildet sind, wobei jeder der Zähne zwei Umfangsflanken aufweist und sich in Richtung der Bewegungslängsachse von einem Zahnfuß zu einem Zahnkopf erstreckt, und
• - Sintern des Grünlings.

According to the invention, a method for producing a component is also proposed, comprising the steps:

• - Provision of a green body, which is penetrated in its longitudinal direction by a central longitudinal axis of movement, comprising an anchor receiving section for optionally receiving an anchor unit, including a wall section which delimits an anchor receiving space on the periphery and has a receiving space base which delimits the anchor receiving space at the bottom, with the wall section or with these teeth adjacent to each other in Are formed circumferentially with respect to the longitudinal axis of movement, each of the teeth having two circumferential flanks and extending in the direction of the longitudinal axis of movement from a tooth root to a tooth tip, and
• - Sintering the green body.

The advantages already described above with regard to the component also result analogously for the method, to which reference is hereby made.

A component according to one of the preceding paragraphs can be produced by means of the method according to the invention. By means of the process, powdery or granulated starting materials are firmly bonded to one another at high temperatures, the shape of which is retained after the green compacts have been produced. In the first step, green compacts are produced and / or provided, which can also be referred to as shaping. This is followed by the actual sintering, namely the compression at high temperatures.

According to the invention, use of a component according to one of the preceding paragraphs in an electromagnetic actuator is also proposed, preferably as a core, as a core cover, as a yoke, as a pole tube section and / or as a pole tube arrangement with a pole tube base section.

From the above paragraphs it follows that the formation of the teeth according to the invention on a stationary component for an electromagnetic actuator is advantageous. The following configuration of a movable component also solves the problem mentioned at the beginning. In the following, the concept of the invention is applied, as it were, to an armature for an electromagnetic actuator.

With view on 14th to 18th is therefore also an anchor for an electromagnetic actuator ( 10 ) conceivable, which in its longitudinal direction from a central longitudinal axis of movement ( B. ) is penetrated, comprising a first end face that can be turned towards a core or core section ( 324 ) and one of the first face ( 324 ) the other end opposite second end face, whereby on the first end face ( 324 ) Teeth ( 112 ) adjacent to each other in the circumferential direction with respect to the longitudinal axis of movement ( B. ) are formed, each of the teeth ( 112 ) two circumferential flanks ( 114 , 116 ) and extends in the direction of the longitudinal axis of movement ( B. ) from a tooth root ( 118 ) to a tooth head ( 120 ) extends.

Alternatively or additionally, the anchor according to the preceding paragraph can be characterized in that at least one of the circumferential flanks ( 114 , 116 ), preferably both circumferential flanks ( 114 , 116 ), one in the circumferential direction ( U ) has / have a tilted course at least in sections.

Alternatively or additionally, the anchor can be characterized according to one of the preceding paragraphs in that at least one of the circumferential flanks ( 114 , 116 ), preferably both circumferential flanks ( 114 , 116 ), has / have a flat surface profile.

Alternatively or additionally, the anchor can be characterized according to one of the preceding paragraphs in that at least one of the circumferential flanks ( 114 , 116 ), preferably both circumferential flanks ( 114 , 116 ), has / have a simply curved or cambered surface profile. This configuration is also conceivable for an inner flank and / or an outer flank.

Alternatively or additionally, the anchor according to one of the preceding paragraphs can be characterized in that at least one of the peripheral edges ( 114a , 114b , 116a , 116b ) of the circumferential flanks ( 114 , 116 ) the longitudinal axis of movement ( B. ) cuts, preferably all peripheral edges ( 114a , 114b , 116a , 116b ) the longitudinal axis of movement ( B. ) to cut.

Alternatively or additionally, the anchor can be characterized according to one of the preceding paragraphs in that the two circumferential flanks ( 114 , 116 ) include at least one circumferential flank angle (a) between 0 ° and 179 °, preferably between 30 ° and 90 °, particularly preferably of 60 °.

Alternatively or additionally, the anchor can be characterized according to one of the preceding paragraphs in that the teeth ( 112 ) over a height ( H ) between the floor of the recording room ( 110 ) and the tooth tip ( 120 ) extend.

Alternatively or additionally, the anchor according to one of the preceding paragraphs can be characterized in that the depth extension ( TZ ) the teeth ( 112 ) at the tooth root ( 118 ) in the radial direction of the depth extension ( TW ) corresponds to a wall section in the radial direction.

Alternatively or additionally, the anchor according to one of the preceding paragraphs can be characterized by the fact that an inner flank ( 122 ) and / or an outer flank ( 124 ) the teeth ( 112 ) parallel to the longitudinal axis of movement ( B. ) is / are designed to run.

Alternatively or additionally, the anchor according to one of the preceding paragraphs can be characterized by the fact that an inner flank ( 122 ) and / or an outer flank ( 124 ) the teeth ( 112 ) is / are designed to be radially tilted or radially conical.

Alternatively or additionally, the armature according to one of the preceding paragraphs can be characterized by the fact that between adjacent teeth ( 112 ) a floor section ( 126 ) is formed, which lies in the plane of the first end face.

Alternatively or additionally, the anchor can be characterized according to one of the preceding paragraphs in that the teeth ( 112 ) on the tooth tip side a tooth tip tip, a tooth tip edge ( 128 ) and / or a tooth tip level ( 130 ) exhibit.

Alternatively or additionally, the armature according to one of the preceding paragraphs can be characterized in that it is at least partially a sintered part.

The advantages already described above with regard to the individual configurations of the component also result analogously for the individual configurations of the armature, to which reference is hereby made.

An electromagnetic actuator is also conceivable ( 10 ), comprising a coil unit ( 20th ), which has an optionally energizable winding ( 22nd ), and an anchor unit ( 30th ), comprising an anchor ( 320 ), which by means of the winding energization along the longitudinal axis of movement ( B. ) is adjustable, and is designed according to one of the preceding paragraphs.

The advantages already described above with regard to the component also result analogously for the actuator, to which reference is hereby made.

• - Bereitstellen eines Grünlings, welcher in seiner Längsrichtung von einer zentralen Bewegungslängsachse (B) durchgriffen ist, umfassend eine erste einem Kern oder Kernabschnitt zuwendbare Stirnseite und eine der ersten Stirnseite anderenends gegenüberliegende zweite Stirnseite, wobei an der ersten Stirnseite (324) Zähne (112) zueinander benachbart in Umfangsrichtung bezüglich der Bewegungslängsachse (B) ausgebildet sind, wobei jeder der Zähne (112) zwei Umfangsflanken (114, 116) aufweist und sich in Richtung der Bewegungslängsachse (B) von einem Zahnfuß (118) zu einem Zahnkopf (120) erstreckt, und
• - Sintern des Grünlings.

A method for producing an anchor is also conceivable, comprising the steps:

• - Provision of a green body, which in its longitudinal direction from a central longitudinal axis of movement ( B. ) is penetrated, comprising a first end face facing a core or core section and a second end face opposite the first end face at the other end, wherein on the first end face ( 324 ) Teeth ( 112 ) adjacent to each other in the circumferential direction with respect to the longitudinal axis of movement ( B. ) are formed, each of the teeth ( 112 ) two circumferential flanks ( 114 , 116 ) and extends in the direction of the longitudinal axis of movement ( B. ) from a tooth root ( 118 ) to a tooth head ( 120 ) extends, and
• - Sintering the green body.

The advantages already described above with regard to the component also result analogously for the method, to which reference is hereby made.

It is also conceivable to use an armature according to one of the preceding paragraphs in an electromagnetic actuator ( 10 ).

The advantages already described above with regard to the component also result analogously for the use of the anchor, to which reference is hereby made.

• 1 eine Längsschnittansicht durch einen elektromagnetischen Aktuator,
• 2 eine perspektivische Ansicht eines Bauteils als Kerndeckel,
• 3 eine Draufsicht auf das Bauteil nach 2,
• 4 eine Seitenansicht des Bauteils nach 2,
• 5 eine erste perspektivische Ansicht eines Bauteils als Polrohranordnung,
• 6 eine zweite perspektivische Ansicht des Bauteils nach 5,
• 7 eine Längsschnittansicht durch einen elektromagnetischen Aktuator mit einem Bauteil als Polrohranordnung nach 5,
• 8 einen Zahn gemäß einer ersten Ausführungsform,
• 9 einen Zahn gemäß einer weiteren Ausführungsform,
• 10 einen Zahn gemäß einer weiteren Ausführungsform,
• 11 einen Zahn gemäß einer weiteren Ausführungsform,
• 12 einen Zahn gemäß einer weiteren Ausführungsform,
• 13 einen Zahn gemäß einer weiteren Ausführungsform,
• 14 eine Längsschnittansicht durch einen weiteren elektromagnetischen Aktuator,
• 15 eine perspektivische Ansicht eines Bauteils als Anker,
• 16eine Draufsicht auf das Bauteil nach 15,
• 17eine Längsschnittansicht durch das Bauteil nach 15 und
• 18 eine Längsschnittansicht durch einen weiteren elektromagnetischen Aktuator.

Further features, details and advantages of the invention emerge from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Show it:

• 1 a longitudinal sectional view through an electromagnetic actuator,
• 2 a perspective view of a component as a core cover,
• 3 a plan view of the component according to 2 ,
• 4th a side view of the component according to 2 ,
• 5 a first perspective view of a component as a pole tube arrangement,
• 6th a second perspective view of the component according to 5 ,
• 7th a longitudinal sectional view through an electromagnetic actuator with a component as a pole tube arrangement according to 5 ,
• 8th a tooth according to a first embodiment,
• 9 a tooth according to a further embodiment,
• 10 a tooth according to a further embodiment,
• 11 a tooth according to a further embodiment,
• 12th a tooth according to a further embodiment,
• 13th a tooth according to a further embodiment,
• 14th a longitudinal sectional view through a further electromagnetic actuator,
• 15th a perspective view of a component as an anchor,
• 16one Top view of the component after 15th ,
• 17a Longitudinal section through the component according to 15th and
• 18th a longitudinal sectional view through a further electromagnetic actuator.

In the figures, elements that are the same or that correspond to one another are each designated by the same reference symbols and are therefore not described again unless expedient. The disclosures contained in the entire description can be applied mutatis mutandis to the same parts with the same reference symbols or the same component names. The position details chosen in the description, e.g. above, below, to the side, etc., refer to the figure immediately described and shown and are to be transferred accordingly to the new position in the event of a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions.

1 shows a central longitudinal section through an electromagnetic actuator 10 . This is central in its longitudinal direction from a longitudinal axis of movement B. penetrated. The actuator 10 includes an actuator housing 12th , which is the electromagnetic actuator 10 ends and in which a coil unit 20th is arranged. The coil unit 20th has one on a bobbin 24 intended winding 22nd on, which can optionally be energized. The bobbin 24 is entirely on its outside and partially on its inside from the actuator housing 12th encompassed. The actuator housing 12th therefore engages with an engaging portion 14th in one of the coil carrier 24 formed anchor space 26th a. Inside the actuator housing 12th is also an anchor unit 30th arranged. The anchor unit 30th has an anchor 32 on, which by means of the winding energization along the longitudinal axis of movement B. is adjustable. At the anchor 32 attached and movable with this is an anchor tappet 34 , which from the actuator housing 12th protrudes. Inside the actuator housing 12th is also a core unit 40 arranged. The core unit 40 includes a component that acts as a core cover 100 is formed and the electromagnetic actuator 10 ends at the end. In the core lid 100 is a plunger recess 101 formed through which the anchor tappet 34 protrudes. The bobbin 24 is one end of the actuator housing 12th and the other end of the core cover 100 held.

The in 1 core cover shown 100 knows how in the 2 to 4th better to recognize a base section 103 and an armature receiving section arranged thereon and here embodied in the manner of a base 102 on. The anchor receiving section 102 comprises a wall section 104 and a receiving room bottom 110 . An anchor room 106 is bounded on the circumferential side by the wall section 104 and on the bottom side of the receiving space base 110 . In the anchor room 106 can the anchor 32 optionally immerse and thus from the anchor receiving space 106 be included. With the wall section 104 are identical teeth 112 adjacent to one another in the circumferential direction with respect to the longitudinal axis of movement B. formed with the teeth 112 at least part of the wall section 104 and form a ring gear in the manner of a Hirth serration. Every tooth 112 extends over a height H between the recording room floor 110 and a tooth head 120 . The deep extension TZ of each tooth 112 at the respective tooth root 118 in the radial direction corresponds to the depth extension TW of the wall section 104 in the radial direction, with the teeth in the embodiments shown 112 the wall section 104 train yourself.

Each of the twelve teeth 112 has a square or, more precisely, a ring segment-like base area and thus two square circumferential flanks 114 , 116 , a trapezoidal inner flank 122 and a trapezoidal outer flank 124 on. The circumferential flanks 114 , 116 are each aligned in the circumferential direction and both have a flat surface course, whereby they are in the direction of the longitudinal axis of movement B. from a tooth root 118 to the tooth head 120 extend. Between neighboring flanks 114 , 116 , 122 , 124 one edge and the inner flank are formed 122 and the outer flank 124 of each tooth 112 are parallel to the longitudinal axis of movement B. designed to run or run vertically. The inside flank 122 and the outer flank 124 point due to the ring segment-like base of the tooth 112 one with the longitudinal axis of movement B. corresponding simply curved surface course.

The tooth head 120 includes a tooth tip level 130 , which are planes parallel to the base section 103 runs and at the same time an end face 108 Are defined. The tooth tip level 130 includes a trapezoidal tooth tip surface 131 whose tapered area is in the direction of the longitudinal axis of movement B. shows the magnetic field lines in the armature 32 respectively.

The circumferential flanks 114 , 116 have one in the circumferential direction U tilted course and thus form a distal tapered tooth 112 out. The two circumferential flanks 114 , 116 close a circumferential flank angle with one another α of 60 °, where the circumferential flank angle α in the tangential direction with respect to the circumferential direction U is located how 4th shows. The core cover 100 so has teeth 112 each with a cone in the circumferential direction U on.

Between neighboring teeth 112 is a floor section each 126 formed, which in the plane of the receiving space bottom 110 lies. The base of the recording room 110 thus forms with the bottom sections 126 a common area.

How 3 shows is between the tooth tip surface 131 and a peripheral flank 114 a peripheral edge 114a and between a floor section 126 and the peripheral flank 114 a peripheral edge 114b educated. Analogous to this is between the tooth tip surface 131 and a peripheral flank 116 a peripheral edge 116a and between a floor section 126 and the peripheral flank 116 a peripheral edge 116b educated. These peripheral edges 114a , 114b , 116a , 116b the circumferential flanks 114 , 116 intersect the longitudinal axis of movement B. , making a tooth 112 is formed, which magnetic field lines in the direction of the longitudinal axis of movement B. directs.

The 5 and 6th each show a perspective view of a component as a pole tube arrangement 200 , in which 5 a connection position of the parts shown and 6th shows an exploded position. The pole tube arrangement 200 comprises a partially hollow cylindrical pole tube base section 210 , a non-magnetic and hollow cylindrical pole tube web section 220 and a hollow cylindrical pole tube end section 230 , which along the longitudinal axis of movement B. are arranged adjacent to one another. The pole tube base section 210 can in its structure the core cover 100 basically resemble and has at its the pole tube web section 220 facing front side 212 the teeth described above 112 analog on. The pole tube web section 220 has a front side as a middle part at both ends 222 , 224 on which each also has the teeth 112 are designed accordingly. Also the pole tube end section 230 has at its the pole tube web section 220 facing front side 212 the teeth described above 112 corresponding to. The opposing teeth 112 adjacent sections 210 , 220 , 230 now engage in one another in a form-fitting manner via the large connecting surfaces 240, so that a strong connection, preferably a material connection, is formed.

7th shows a central longitudinal section through part of an electromagnetic actuator 10 . The three-part pole tube arrangement is shown here 200 from the 5 and 6th , which has an anchor room 26th encloses and in which an anchor 32 as well as an anchor ram 34 along the longitudinal axis of movement B. are adjustable. It can also be seen that the pole tube base section 210 on the one hand and the pole tube end section 230 on the other hand, one in each case in the direction of the longitudinal axis of movement B. form effective armature stroke limitation.

The 8th to 11 show different longitudinal cross-sections of teeth viewed in the radial direction 112 . 8th forms a tooth 112 with flanks 114 , 116 which is located on the head side in a tooth tip edge 128 to meet. That tooth 112 thus does not have a tooth tip level 130 with tooth tip surface 131 on. Both sides of the tooth 112 is each a floor section 126 formed, which creates an interdental space. 9 shows the tooth 112 out 8th but without bottom sections 126 between adjacent teeth 112 . 10 develops the tooth 112 out 8th further, however, there is now the tooth tip level 130 shown. 11 shows a tooth 112 with flanks 114 , 116 that have a simply curved surface and are located on the head side in a tooth tip edge 128 to meet. The 12th and 13th each show a longitudinal cross-section seen in the tangential direction of teeth 112 . The tooth 112 according to 12th has an inner flank 122 on, which is designed to be tilted radially - the teeth 112 thus together form a radial inner control cone. The tooth 112 according to 13th has an outer flank 124 on, which is designed to be radially tilted - as is already known from practice. The teeth 112 thus together form a radial outer control cone.

14th shows a central longitudinal section through a further electromagnetic actuator 10 . This is central in its longitudinal direction from a longitudinal axis of movement B. penetrated. The actuator 10 includes an actuator housing 12th , which is the electromagnetic actuator 10 ends and in which a coil unit 20th is arranged. The coil unit 20th has one on a bobbin 24 intended winding 22nd on, which can optionally be energized. The bobbin 24 is entirely on its radial outside from the actuator housing 12th encompassed. The bobbin 24 forms an anchor space 26th out. Inside the actuator housing 12th is also an anchor unit 30th arranged. The anchor unit 30th has an anchor 320 on, which by means of the winding energization along the longitudinal axis of movement B. is adjustable. At the anchor 320 attached and movable with this is an anchor tappet 34 , which from the actuator housing 12th protrudes. The actuator housing 12th has an anchor recess at the end 105 on by which the anchor 320 can optionally protrude, wherein the actuator housing 12th a guide ring for this 107 having. Inside the actuator housing 12th is also a core unit 40 arranged. The core unit 40 includes a core cover 1000 , which is the electromagnetic actuator 10 ends at the end. In the core lid 1000 is a plunger recess 101 formed through which the anchor tappet 34 protrudes. The bobbin 24 is one end of the actuator housing 12th and the other end of the core cover 1000 held.

The in 14th shown anchor 320 knows how in the 15th to 17th better to see a cylindrical body 322 on which of the longitudinal axis of movement B. is penetrated centrally. The anchor 320 a first includes the core cover 1000 as a core section facing face 324 and one of the first end face 324 on the other end opposite second end face. On the first face 324 are identical teeth 112 adjacent to one another in the circumferential direction U with respect to the longitudinal axis of movement B. formed and form a ring gear in the manner of a Hirth serration. Every tooth 112 extends over a height H between the first face 324 and a tooth head 120 . The deep extension TZ of each tooth 112 at the respective tooth root 118 in the radial direction corresponds to the depth extension TW of a wall section in the radial direction, the teeth in the embodiments shown 112 form the wall section itself.

Each of the twelve teeth 112 has a square or, more precisely, a ring segment-like base area and two square circumferential flanks 114 , 116 , a trapezoidal inner flank 122 and a trapezoidal outer flank 124 on. The circumferential flanks 114 , 116 are each aligned in the circumferential direction and both have a flat surface course, whereby they are in the direction of the longitudinal axis of movement B. from a tooth root 118 to the tooth head 120 extend. Between neighboring flanks 114 , 116 , 122 , 124 one edge and the inner flank are formed 122 and the outer flank 124 of each tooth 112 are parallel to the longitudinal axis of movement B. designed to run or run vertically. The inside flank 122 and the outer flank 124 point due to the ring segment-like base of the tooth 112 one with the longitudinal axis of movement B. corresponding simply curved surface course.

The tooth head 120 includes a tooth tip level 130 , which are plane parallel to the face 324 runs. The tooth tip level 130 includes a trapezoidal tooth tip surface 131 whose tapered area in the direction of the longitudinal axis of movement B. shows to record the magnetic field lines.

The circumferential flanks 114 , 116 have one in the circumferential direction U tilted course and thus form a distal tapered tooth 112 out. The two circumferential flanks 114 , 116 close a circumferential flank angle with one another α of 60 °, where the circumferential flank angle α in the tangential direction with respect to the circumferential direction U is located how 15th shows. The anchor 320 so has teeth 112 each with a cone in the circumferential direction U on.

Between neighboring teeth 112 a bottom section 1260 is formed, which is in the plane of the end face 324 lies. The front side 324 thus forms with the bottom sections 126 a common area.

How 16 shows is between the tooth tip surface 131 and a peripheral flank 114 a peripheral edge 114a and between a floor section 126 and the peripheral flank 114 a peripheral edge 114b educated. Analogous to this is between the tooth tip surface 131 and a peripheral flank 116 a peripheral edge 116a and between a floor section 126 and the peripheral flank 116 a peripheral edge 116b educated. These peripheral edges 114a , 114b , 116a , 116b the circumferential flanks 114 , 116 intersect the longitudinal axis of movement B. , making a tooth 112 is formed, which magnetic field lines from the direction of the longitudinal axis of movement B. can take in well.

14th now shows that the core cover 1000 a base section 1030 comprises, which has a cross-sectionally stepped base portion 1040 having. One face 1050 of the base section 1040 serves as a stop surface for the front side 324 of the anchor 320 . The base section 1040 has a circumferential ring recess 1060 on, in which the teeth 112 can protrude if the front side 324 of the anchor 320 at the front 1050 of the base section 1040 comes to rest between the distal end of the teeth and the core cover 1000 an air gap remains so that the teeth 112 do not come into the plant.

18th shows a central longitudinal section through a further electromagnetic actuator 10 . This is central in its longitudinal direction from a longitudinal axis of movement B. penetrated. The actuator 10 includes an actuator housing 12th , which is the electromagnetic actuator 10 partially closes at the end and in which a coil unit 20th is arranged. The coil unit 20th has one on a bobbin 24 intended winding 22nd on, which can optionally be energized. The bobbin 24 is entirely from the actuator housing on its circumferential outer side 12th encompassed. Inside the bobbin 24 is a pole tube arrangement 2000 with a magnetically conductive pole tube base section 2100 and a non-magnetic pole tube web section arranged thereon 2200 arranged. The pole tube base section 2100 closes an anchor space formed therein 26th and the actuator 10 from the end. Inside the anchor room 26th is also an anchor unit 30th arranged. The anchor unit 30th has an anchor 320 on, which by means of the winding energization along the longitudinal axis of movement B. is adjustable and already regarding the 14th to 17th has been described. At the anchor 320 attached and movable with this is a Anchor tappet 34 , which from the actuator housing 12th protrudes. Inside the actuator housing 12th is also a core unit 40 arranged. The core unit 40 includes a core cover 1000 , which is the electromagnetic actuator 10 ends at the end. In the core lid 1000 is a plunger recess 101 formed through which the anchor tappet 34 protrudes. The bobbin 24 is one end of the actuator housing 12th and the other end of the core cover 1000 held.

The ones in the 14th to 18th shown teeth 112 can according to the 8th to 13th be designed.

All of the components mentioned in the description of the figures can be sintered components, at least in sections.

It has also been shown that a sintered component according to the invention has significantly improved switching properties compared to a comparable component with a known control cone, in particular, for example, an armature in a sintered core cover provided with teeth according to the invention has in the de-energized state, i.e. in the position extended from the armature space , a 30% lower force level compared to free-cutting steel.

The invention is not limited to one of the embodiments described above, but can be modified and combined in many ways, provided that it is technically possible.

All of the features and advantages arising from the claims, the description and the drawing, including structural details, spatial arrangements and method steps, can be essential to the invention both individually and in a wide variety of combinations.

In order to avoid repetitions, features disclosed in accordance with the device should also apply and be claimable as disclosed in accordance with the method. Likewise, features disclosed in accordance with the method should apply and be claimable as disclosed in accordance with the device.

List of reference symbols

10

Actuator

12th

Actuator housing

14th

Engaging portion

20th

Coil unit

22nd

Winding

24

Bobbin

26th

Anchor room

30th

Anchor unit

32

anchor

34

Anchor tappet

40

Core unit

100

Core cover

101

Tappet recess

102

Anchor receiving section

103

Base section

104

Wall section

105

Anchor recess

106

Anchor receiving space

107

Guide ring

108

Front side

110

Recording room base

112

tooth

114

Circumferential flanks

114a

Peripheral edge

114b

Perimeter edges

116

Circumferential flanks

116a

Peripheral edge

116b

Perimeter edges

118

Tooth root

120

Tooth head

122

Inside flank

124

Outer flank

126

Floor section

128

Tooth tip edge

130

Tooth tip level

131

Tooth tip surface

200

Pole tube arrangement

210

Pole tube base section

212

Front side

220

Pole tube web section

222

Front side

224

Front side

230

Pole tube end section

232

Front side

320

anchor

322

body

324

first face

1000

Core cover

1030

Base section

1040

Base section

1050

Front side

1060

Ring recess

2000

Pole tube arrangement

2100

Pole tube base section

2200

Pole tube web section

α

Circumferential flank angle

B.

Longitudinal axis of movement

H

height

TW

Depth of the wall section

TZ

Depth of the tooth

U

Circumferential direction

Claims (10)

Component for an electromagnetic actuator (10) through which a central longitudinal axis (B) of movement extends in its longitudinal direction, comprising an armature receiving section (102) for optionally receiving an armature unit (30), comprising a wall section (104) which has an armature receiving space (106 ) delimited on the circumferential side and has a receiving space base (110) which delimits the armature receiving space (106) on the bottom side, characterized in that teeth (112) are formed adjacent to one another in the circumferential direction with respect to the longitudinal axis (B) of the wall section (104) or with this, wherein each of the teeth (112) has two circumferential flanks (114, 116) and extends in the direction of the longitudinal axis of movement (B) from a tooth root (118) to a tooth head (120). Component after Claim 1 , characterized in that at least one of the circumferential flanks (114, 116), preferably both circumferential flanks (114, 116), has a course that is at least partially tilted in the circumferential direction (U). Component according to one of the preceding claims, characterized in that at least one of the circumferential edges (114a, 114b, 116a, 116b) of the circumferential flanks (114, 116) intersects the longitudinal axis (B) of movement, preferably all of the circumferential edges (114a, 114b, 116a, 116b) intersect the longitudinal axis of movement (B). Component according to one of the preceding claims, characterized in that the two circumferential flanks (114, 116) with each other enclose at least one circumferential flank angle (a) between 0 ° and 179 °, preferably between 30 ° and 90 °, particularly preferably 60 °. Component according to one of the preceding claims, characterized in that an inner flank (122) and / or an outer flank (124) of the teeth (112) is designed to run parallel to the longitudinal axis (B) of movement. Component according to one of the preceding claims, characterized in that an inner flank (122) and / or an outer flank (124) of the teeth (112) is designed to be radially tilted or radially conical. Component according to one of the preceding claims, characterized in that a bottom section (126) is formed between adjacent teeth (112) which lies in the plane of the bottom of the receiving space (110). Component according to one of the preceding claims, characterized in that the component is at least partially a sintered part. Electromagnetic actuator (10), comprising a coil unit (20) which has a winding (22) that can optionally be energized, an armature unit (30) which has an armature (32) which can be adjusted along the longitudinal axis (B) of the movement by means of the winding energization, and a component according to one of the preceding claims. Method for manufacturing a component, comprising the steps: a. Providing a green body through which a central longitudinal axis (B) of movement extends in its longitudinal direction, comprising an armature receiving section (102) for optionally receiving an armature unit (30), including a wall section (104) which delimits an armature receiving space (106) on the circumferential side and as well has a receiving space base (110) which delimits the armature receiving space (106) on the bottom side, teeth (112) being formed adjacent to one another in the circumferential direction with respect to the longitudinal axis of movement (B) on the wall section (104), each of the teeth (112) having two circumferential flanks ( 114, 116) and extends in the direction of the longitudinal axis (B) of a tooth base (118) to a tooth head (120), and b. Sintering the green compact.

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