Core for a coil

Abstract

The present invention relates to a core (1) for a coil (40), in particular for a switching device (60), such as an electromagnetic relay. The core (1) comprises an armature abutment portion (2) for abutting an armature (48) in a closed state, an armature support portion (4) for mounting the armature (48) to the core (1), and a coil portion (6) for receiving the coil (40). The coil portion (6) extends along a longitudinal axis (X) from the armature abutment portion (2) to the armature support portion (4). In order to provide a core (1) that allows for the assembly of a thinner switching device (60), at least one, preferably both, of the armature abutment portion (2) and the armature support portion (4), and the coil portion (6) extend in separate planes that are offset from each other perpendicular to the longitudinal axis (X).

Description

Field of the Invention

[0001] The present invention relates to a core for a coil, in particular for a switching device, such as an electromagnetic relay. Background Art

[0002] Such a core is designed to carry a coil and is used in a switching device, such as an electromagnetic relay. Usually, the coil is wound around a bobbin, which serves as a permanent container for the wire to maintain its shape and stiffness and to facilitate the assembly of the winding onto the core. Switching devices are widely used, for example, in household appliances, automation systems, communication devices, remote control devices, and automobiles. For each application, the function of the switching device can be different, and thus these applications are often subject to various size limitations. Therefore, there has been a constant desire to provide smaller, especially thinner, switching devices. Currently, the width of the switching device is determined by the core and / or the coil. Summary of the Invention

[0003] Therefore, an object of the present invention is to provide a core for a coil that allows for the design of a thinner switching device.

[0004] The present invention solves this object by providing a core for a coil, which includes an armature adjacent portion for adjacent to an armature in a closed position, an armature support portion for mounting the armature to the core, and a coil portion for receiving the coil. The coil portion extends from the armature adjacent portion to the armature support portion along a longitudinal axis. At least one of the armature adjacent portion and the armature support portion and the coil portion extend along separate planes, offset from each other perpendicular to the longitudinal axis.

[0004]

[0005] According to the solution of the present invention, the coil portion is offset from at least one of the armature adjacent portion and the armature support portion perpendicular to the longitudinal axis. Thus, a clearance is formed between the coil portion and at least one of the armature adjacent portion and the armature support portion. When the coil is mounted on the coil portion, the width by which the coil protrudes from the core is reduced due to this clearance. Therefore, with the core of the present invention, the width of the switching device can be further reduced.

[0006] The core can be elongated along the longitudinal axis and have a longitudinally thin body, which means that the core can have a length in a direction substantially parallel to the longitudinal axis, a height in a direction substantially parallel to the vertical axis, and a material thickness in a direction substantially parallel to the transverse axis, each axis being perpendicular to each other, where the length is greater than the height, and the height is greater than the material thickness. At least one of the armature adjacent portion and the armature support portion and the coil portion can extend along separate planes offset from each other in a direction substantially parallel to the transverse axis.

[0005]

[0007] The present invention can be further improved by the following features, which are independent of each other in terms of their respective technical effects and can be combined arbitrarily.

[0008] For example, the core can be an iron core, especially a soft iron core. When current flows through the coil, a magnetic field is generated in the iron core. The magnetic field can act on the armature, pulling the armature towards the core or repelling the core. Therefore, there is no need to provide an additional magnetizable element between the core and the coil. The core or at least the coil part can preferably include soft iron because it does not retain its magnetism when the current is cut off; or in other words, it is not permanently magnetized.

[0009] The coil part can especially be elongated along the longitudinal axis direction. Preferably, the coil part can have a substantially cuboid form, elongated along the longitudinal axis. Thus, the wound coil can include a substantially rectangular or elliptical cross-section in a plane perpendicular to the longitudinal axis, further reducing the width of the wound coil.

[0010] The armature adjacent part and the armature can each form an end of the core, which are arranged opposite to each other along the longitudinal axis and are connected to each other via the coil part.

[0011] Preferably, each part can include a substantially planar flat surface having a normal substantially perpendicular to the longitudinal axis. The flat surface of the coil part can preferably be offset from the flat surfaces of both the armature support part and the armature adjacent part along the normal direction. Thus, the coil part can be easily distinguished from the armature adjacent part and the armature support part. The flat surfaces of each part can advantageously be arranged parallel to each other, wherein the normal of each flat surface can extend substantially parallel to the transverse axis.

[0012] According to another advantageous embodiment of the present invention, the armature support part and the armature adjacent part can be aligned with each other along the longitudinal axis. In particular, the flat surfaces of the armature support part and the armature adjacent part can be aligned with each other along the longitudinal axis.

[0013] Compared with the magnetic component and / or the switching device having an armature with a lower material thickness, in order to allow the installation of an armature with a larger material thickness without increasing the total width of the magnetic component and / or the switching device, the material thickness of the armature support part can be lower than the material thickness of the coil part.

[0014] The armature adjacent part can include a material thickness greater than the material thickness of the armature support part, such that the armature adjacent part can be rigid and will not be deflected by the armature due to magnetic attraction, which further increases the durability of the core.

[0015] Alternatively, the armature support part and the armature adjacent part can have the same material thickness. This can further reduce the complexity of the core and allow easier manufacture of the core.

[0016] The coil portion can be formed as a constricted portion of the core in a direction parallel to the vertical axis. In other words, the armature support portion and the armature adjacent portion can extend beyond the coil portion in a direction parallel to the vertical axis. Thus, the coil portion and the other portions can be further distinguished from each other. Further, slippage of the spool and / or the coil in a direction parallel to the longitudinal axis can be prevented because the protruding wings of the corresponding portions can act as stop portions for the spool and / or the coil.

[0017] The armature adjacent portion and the armature support portion can extend parallel to each other beyond the coil portion in a direction parallel to the vertical axis. Preferably, the armature adjacent portion and the armature support portion can extend beyond the coil portion along the vertical axis at either end of the coil portion. Thus, when viewed from a direction substantially parallel to the transverse axis, the core can include a substantially H-shaped configuration.

[0018] The height of the armature support portion in a direction substantially parallel to the vertical direction can be greater than the height of the coil portion in a direction substantially parallel to the vertical direction. Thus, the armature support portion includes an increased surface area, thereby allowing optimization of the magnetic flux of the armature support portion. Accordingly, the magnetic flux acting on the armature at the armature support portion can be increased.

[0019] To further increase the magnetic flux at the armature adjacent portion, the height of the armature adjacent portion in a direction substantially parallel to the vertical direction can be greater than the height of the armature support portion. This can be particularly advantageous in the off configuration such that the magnetic flux at the armature adjacent portion can overcome the air gap between the armature adjacent portion and the armature and act on the armature.

[0020] To further simplify the manufacturing process, particularly when mass-producing the core, it is preferred that the armature adjacent portion, the armature support portion, and the coil portion are integrally formed with each other as a monolithic core.

[0021] The coil portion can be bent into different planes, deviating from the plane of at least one of the armature adjacent portion and the armature support portion, preferably deviating from both planes. If the coil portion can be a raised portion of the core, a simple and effective way to offset the coil portion in the transverse direction is achieved. The coil portion can be formed as a laterally offset portion or a crank of the core, wherein the intermediate axis of the coil portion substantially parallel to the longitudinal axis is laterally offset from the intermediate axes of the armature adjacent portion and the armature support portion substantially parallel to the longitudinal axis.

[0022] At the transition region between the coil portion and at least one of the armature adjacent portion and the armature support portion, a step connecting the laterally offset portions of the core can be formed. The step can be an inclined portion of the coil portion, inclined with respect to the longitudinal axis, and connecting a portion of the coil portion arranged parallel to the longitudinal axis and the armature adjacent portion or the armature support portion, respectively.

[0023] Each of the opposing flat surfaces of the coil portion may be laterally offset from the corresponding opposing flat surface of at least one, preferably both, of the armature adjacent portion and the armature support portion. The opposing flat surfaces may be laterally offset in opposite directions such that the coil portion further forms a neck of the core in the lateral direction. In this embodiment, the width by which the wound coil projects beyond the corresponding flat surface of at least one, preferably both, of the armature adjacent portion and the armature support portion may be reduced on either side.

[0024] However, generally in a switching device, the width of the core having the coil only affects the width of the relay on one side. On the opposite side, the armature may be arranged. The armature may be formed like a frame around the coil portion and the coil. Thus, the coil portion may advantageously be laterally offset towards the side where the armature is to be mounted without increasing the width of the magnetic assembly and thus without increasing the width of the switching device.

[0025] A flange may be provided in the transition region to separate the coil portion from the armature adjacent portion and the armature support portion. The flange may be formed of a resin material that is not magnetized during application. In addition, the flange may ensure that the installed coil retains its shape in the coil portion.

[0026] At least in the transition region separating the coil portion from the armature support portion, a flange may be provided. The flange may be formed as an overmolded part. Preferably, the flange may be part of a mounting bracket for mounting the armature to the armature support portion. This has the advantage that the flange is part of a larger molded part, which further facilitates the process of overmolding the flange to the transition region.

[0027] An additional flange may be formed in the transition region between the coil portion and the armature adjacent portion. Optionally, the armature adjacent portion itself may serve as a stop for the wound coil.

[0028] A magnetic assembly for a switching device, in particular an electromagnetic relay, may include a core according to any of the above configurations and a coil arranged on the coil portion.

[0029] According to a further advantageous embodiment, a bobbin may be formed on the coil portion. For example, the bobbin may be an overmolded part adapted to hold the coil firmly in place. However, since the coil portion is clearly distinguishable from the armature support portion and the armature adjacent portion, the coil may also be wound directly around the coil portion.

[0030] The armature may be mounted to the core at the armature support portion and the armature may be movable from an open position where a distal end opposite the support portion is remote from the armature adjacent portion to a closed position where this distal end of the armature abuts the armature adjacent portion.

[0031] The armature can be attracted or repelled by a magnetic field induced by a current flowing through the coil. Thus, the magnetic field can cause the armature to move from an open position to a closed position, or from a closed position to an open position.

[0032] The armature can preferably include an opening, and the coil portion can be at least partially received in the opening. For example, the armature can be formed as a frame, mounted to the core at the armature support portion, and extending around a cross-section in a plane substantially perpendicular to the plane spanned by the longitudinal axis and the vertical axis. Thus, at least in the closed position, the coil portion and / or the coil can be at least partially received in the opening and framed by the armature. Thus, the width of the switching device can be further reduced.

[0033] The armature can be mounted to the armature support portion via a spring, for example. After the current in the coil is removed, the spring can move the armature to its initial position such that the armature is no longer attracted or repelled by the magnetic field.

[0034] The armature can be held by a mounting bracket molded to the armature support portion. The mounting bracket can hold the position of the armature at least in a direction parallel to the longitudinal axis, for example by form-fitting.

[0035] To further reduce the thickness of the magnetic assembly, the coil can preferably not extend laterally beyond the flat surface of the mounting bracket on the side facing away from the armature. The coil can include an outer surface that is at least partially aligned with the flat surface of the mounting bracket.

[0036] A switching device, such as an electromagnetic relay, can include a magnetic assembly according to any of the above configurations. Description of the Drawings

[0037] Hereinafter, the core and the electromagnetic assembly according to the present invention will be explained in more detail with reference to the drawings, in which exemplary embodiments are shown.

[0038] In the drawings, the same reference numerals are used for elements that correspond to each other in terms of function and / or structure.

[0039] According to the description of the various aspects and embodiments, if the technical effects of the elements shown in the drawings are not required for a particular application, these elements can be omitted, and vice versa, i.e., if the technical effects of those particular elements are advantageous in a particular application, elements not shown or described in the reference drawings but described above can be added.

[0040] In the drawings:

[0041] Figure 1 A schematic front view of an exemplary embodiment of a core according to the present invention is shown;

[0042] Figure 2shows Figure 1 a schematic top view of the core shown;

[0043] Figure 3 a schematic perspective view of an exemplary embodiment of a magnet assembly according to the present invention;

[0044] Figure 4 a schematic front view of a magnet assembly having an armature; and

[0045] Figure 5 a schematic cross-sectional view of an exemplary embodiment of a switching device. DETAILED DESCRIPTION

[0046] First, reference is made to Figure 1 and Figure 2 to describe an exemplary embodiment of the core 1 according to the present invention.

[0047] The core 1 for a coil, in particular for a switching device such as an electromagnetic relay, includes an armature adjacent portion 2 for adjacent to the armature in the closed state, an armature support portion 4 for mounting the armature to the core 1, and a coil portion 6 for receiving the coil. The coil portion 6 extends from the armature adjacent portion 2 to the armature support portion 4 along a longitudinal axis X. In order to provide a core 1 that allows for the assembly of a thinner switching device, at least one, preferably both, of the armature adjacent portion 2 and the armature support portion 4, and the coil portion 6 extend in separate planes that are offset from each other perpendicular to the longitudinal axis X.

[0048] The core 1 can be elongated along the longitudinal axis X and have a longitudinally thin body, which means that the core 1 can have a length in a direction substantially parallel to the longitudinal axis X, a height in a direction substantially parallel to the vertical axis Y, and a material thickness in a direction substantially parallel to the transverse axis Z, with each axis being perpendicular to each other, where the length is greater than the height, and the height is greater than the material thickness.

[0049] Each portion can include a substantially planar flat surface 8 that is substantially parallel to the plane spanned by the longitudinal axis X and the vertical axis Y. The flat surface 8 of the coil portion 6 can be laterally offset from at least one of the flat surfaces 8 of the armature adjacent portion 2 and the armature support portion 4.

[0050] Preferably, the flat surface 10 of the coil portion 6 facing the opposite direction to the flat surface 8 of the coil portion 6 can be laterally offset from at least one of the flat surface 10 of the armature adjacent portion 2 and the flat surface 10 of the armature support portion 4. In this advantageous embodiment, each of the flat surfaces 8, 10 of the coil portion 6 is laterally offset from the corresponding flat surfaces 8, 10 of the armature adjacent portion 2 and / or the armature support portion 4 in the same direction. Therefore, the coil portion 6 includes an intermediate axis parallel to the longitudinal axis X, and this intermediate axis is laterally offset from the intermediate axis of at least one, preferably both, of the armature adjacent portion 2 and the armature support portion 4. Thus, the coil portion 6 forms a crank 12 of the core 1.

[0051] Alternatively, the flat surfaces 8, 10 of the coil portion 6 can be laterally offset from the corresponding flat surfaces 8, 10 of the armature adjacent portion 2 and / or the armature support portion 4 in opposite directions, thereby forming a constricted portion of the core 1 parallel to the transverse axis Z.

[0052] Due to this offset, a clearance 14 in a direction substantially parallel to the transverse axis Z is provided between the flat surface 8 of the coil portion 6 and the corresponding flat surface 8 of the armature adjacent portion 2 and / or the armature support portion 4. When the coil is mounted on the coil portion 6, this clearance 14 can compensate for the coil width extending laterally from the flat surface 8 of the coil portion 6. Therefore, the width of the coil protruding from the said side of the core 1 can be reduced, thus allowing an optimal space-saving assembly of the switching device.

[0053] The coil portion 6 can be bent into a separate plane to offset the coil portion 6 from at least one of the armature adjacent portion 2 and the armature support portion 4. To provide a simple and cost-effective way to form an offset between the coil portion 6 and at least one of the armature adjacent portion 2 and the armature support portion 4, the coil portion 6 can be formed as a convex portion 16 of the core 1.

[0054] The armature adjacent portion 2 and the armature support portion 4 can be aligned in a direction substantially parallel to the longitudinal axis X, which means that the intermediate axis of the armature adjacent portion 2 parallel to the longitudinal axis X is aligned with the intermediate axis of the armature support portion 4 parallel to the longitudinal axis X. Alternatively, the armature adjacent portion 2 and the armature support portion 4 can also be laterally offset from each other.

[0055] The armature adjacent portion 2, the armature support portion 4, and the coil portion 6 can be integrally formed with each other as a monolithic core 18. The core 1 can be a magnetic core, such as an iron core. Preferably, the core 1 can be formed of a soft magnetic material, i.e., a magnetizable material with low coercivity (such as hysteresis), silicon steel, or ferrite.

[0056] The armature adjacent part 2 and the armature support part 4 can each form an end of the core 1, and these ends are arranged opposite to each other along the longitudinal axis X. The coil part 6 can extend from the armature adjacent part 2 to the armature support part 4 substantially parallel to the longitudinal axis X, having a substantially thin and elongated rectangular parallelepiped form. In other words, the coil part 6 can have a length 20 substantially parallel to the longitudinal axis X, a height 22 substantially parallel to the vertical axis Y, and a material thickness 24 substantially parallel to the transverse axis Z.

[0057] At least the armature support part 4 can include a material thickness 26 smaller than the material thickness 24 of the coil part 6. Therefore, an armature with a larger material thickness can be adopted without increasing the overall width dimension of the switching device.

[0058] The material thickness 26 of the armature support part 4 and the material thickness 28 of the armature adjacent part 2 can be the same. However, it may be desirable to have a more rigid armature adjacent part 2 so that it will not be deflected by the force that the armature presses against the armature adjacent part 2. Therefore, the material thickness 28 of the armature adjacent part 2 can be greater than the material thickness 26 of the armature support part 4.

[0059] However, in order to keep the core 1 simple and easy to manufacture, the material thickness 24 of the coil part 6, the material thickness 26 of the armature support part 4, and the material thickness 28 of the armature adjacent part 2 can be substantially the same.

[0060] From Figure 2 it can be seen that the coil part 6 can be formed as a constricted part 30 of the core 1 in a direction parallel to the vertical axis Y. In other words, the armature adjacent part 2 and the armature support part 4 can include wings 32 that extend beyond the coil part 6 in a direction parallel to the vertical axis Y.

[0061] Therefore, in a direction parallel to the vertical axis Y, the height 33 of the armature support part 4 can be greater than the height 22 of the coil part 6. Therefore, the magnetic flux at the armature support part 4 can be increased in order to mount the armature to the armature support part 4.

[0062] The wings 32 of the armature adjacent part 2 and the armature support part 4 can extend parallel to each other, and thus the wing 32 of the armature adjacent part 2 can extend further than the wing 32 of the armature support part 4. Therefore, the armature adjacent part 2 can provide a larger surface for the armature, so that the force with which the armature abuts against the armature adjacent part 2 can be evenly distributed over a larger area. In addition, the magnetic flux at the armature adjacent part 2 can be increased, thereby allowing the air gap between the armature in the off configuration and the armature adjacent part 2 to be overcome.

[0063] The armature adjacent portion 2 and the armature support portion 4 may include wing portions 32 that extend beyond the coil portion 6 on both sides along the vertical axis Y. Accordingly, the core portion 1 includes a substantially H-shaped configuration. The wing portions 32 may further help clearly distinguish the coil portion 6 from the armature adjacent portion 2 and the armature support portion 4, and prevent the coil from slipping off the coil portion 6 in a direction substantially parallel to the longitudinal axis X.

[0064] At a transition region 34 between the coil portion 6 and at least one of the armature adjacent portion 2 and the armature support portion 4, a step 36 may be formed that connects the lateral offset portions of the core portion 1. The step 36 may be an inclined portion of the coil portion 6, inclined with respect to the longitudinal axis, and connects a portion of the coil portion 6 arranged parallel to the longitudinal axis to the armature adjacent portion 2 and / or the armature support portion 4, respectively.

[0065] Turning to Figure 3 , the figure shows a perspective view of an exemplary embodiment of a magnetic assembly 38 according to the present invention.

[0066] The magnetic assembly 38 includes a core portion 1 and a coil 40 disposed on the coil portion 6 of the core. When current flows through the coil 40, a magnetic field is induced. The core portion 1 may confine and direct the magnetic field, greatly increasing the intensity of the magnetic field.

[0067] The coil 40 may be directly wound around the coil portion 6, thereby further reducing the size of the magnetic assembly 38 since no additional spool need be provided. However, a spool may also be formed by overmolding the coil portion 6. The spool may be formed of a resin material and is adapted to hold the coil 40 securely in place.

[0068] To further separate the coil portion 6 from at least the armature support portion 4, a flange 42 may be provided at the transition region 34 between the coil portion 6 and the armature support portion 4. The flange 42 may fix the coil 40 at the coil portion 6 and prevent the coil from moving in a direction parallel to the longitudinal axis X. The flange 42 may be formed by overmolding and may preferably include a resin material.

[0069] To further facilitate the molding of the flange 42, the flange 42 may be integrally formed with a mounting bracket 44 as a one-piece component 46. Accordingly, the flange 42 is part of a larger component and is easier to mold. The mounting bracket 44 is overmolded onto the armature support portion 4 and may be adapted to fix the armature at least in a direction substantially parallel to the longitudinal axis X.

[0070] In this embodiment, the armature adjacent portion 2 directly serves as a flange for further fixing the coil 40 at the coil portion 6. However, an additional overmolded flange may be provided at the transition region 34 between the coil portion 6 and the armature adjacent portion 2.

[0071] Since the coil portion 6 has a long and thin cuboid shape, the coil 40 wound around the coil portion 6 includes a rectangular or oval shape in a cross-section in a plane substantially perpendicular to the longitudinal axis X. Thus, the width of the coil 40 is further reduced, allowing for a more slender component of the switching device.

[0072] Figure 4 is shown Figure 3 a magnetic assembly in which an armature 48 is mounted to an armature support region 4. The armature 48 can be substantially O-shaped, having a frame 50 that forms an opening 52. The frame 50 can include axially extending notches 54 at the ends on both sides along the axial axis Y, which are mounted to the armature support region 4. The mounting bracket 44 includes complementary formed locking latches 56 that extend into the respective notches 54, thereby forming a form-fit in a direction parallel to the longitudinal axis X.

[0073] The opening 52 can preferably be aligned with the coil portion 6 such that the coil portion 6 can be at least partially received in the opening 52. Thus, the width of the coil portion 6 and the coil 40 on the side facing the armature do not negatively affect the width of the magnetic assembly, allowing for the assembly of an even more slender switching device.

[0074] The distal end of the frame 50 remote from the armature support portion 4 preferably abuts the armature adjacent portion 2 such that the distal end of the frame 50 can abut the armature adjacent portion 2 in the closed position of the armature 48. The armature 48 can be adapted to directly contact the contact spring of the switching device or can be provided with an actuating arm portion 58 molded to the distal end of the frame 50.

[0075] Figure 5 A cross-sectional view of an exemplary embodiment of a switching device 60 is shown. The switching device 60 can be an electromagnetic relay 61 and includes a magnetic assembly 38 according to the present invention.

[0076] The armature 48 can be moved from an open position, in which, as Figure 5 shown, the armature 48 pivots away from the armature adjacent portion 2, to a closed position, in which the armature 48 abuts the armature adjacent portion 2. By passing a current through the coil 40, a magnetic field is formed that attracts or repels the armature 48, causing a change in the position of the armature 48. The actuating arm portion transfers the motion to the contact spring 62, thereby closing or opening the contact between the contact spring and a complementary contact spring 64.

[0077] From Figure 5As can be seen, the coil portion 6 can be laterally offset in a lateral direction pointing to the armature 48 relative to the armature adjacent portion 2 and the armature support portion 4. Therefore, the width by which the coil 40 protrudes from the side of the core 1 facing away from the armature 48 can be minimized. Preferably, the coil 40 does not protrude beyond the flat surface 66 of the mounting bracket 44, thereby further minimizing the width of the magnetic assembly 38. This offset can be set such that the coil 40 includes an outer surface on the side facing away from the armature 48, which outer surface is aligned with the flat surface 66 of the mounting bracket 44.

[0078] List of Reference Numerals

[0079] 1 Core

[0080] 2 Armature Adjacent Portion

[0081] 4 Armature Support Portion

[0082] 6 Coil Portion

[0083] 8 Flat Surface

[0084] 10 Flat Surface in Opposite Direction

[0085] 12 Crank

[0086] 14 Clearance

[0087] 16 Protrusion

[0088] 18 Monolithic Core

[0089] 20 Length of Coil Portion

[0090] 22 Height of Coil Portion

[0091] 24 Material Thickness of Coil Portion

[0092] 26 Material Thickness of Armature Support Portion

[0093] 28 Material Thickness of Armature Adjacent Portion

[0094] 30 Shrinkage Portion

[0095] 32 Wing Portion

[0096] 33 Height of Armature Support Portion

[0097] 34 Transition Region

[0098] 36 Step

[0099] 38 Magnetic Assembly

[0100] 40 Coil

[0101] 42 Flange

[0102] 44 Mounting Bracket

[0103] 46 Monolithic component

[0104] 48 Armature

[0105] 50 Frame

[0106] 52 Opening

[0107] 54 Notch

[0108] 56 Locking latch

[0109] 58 Actuating arm

[0110] 60 Switch device

[0111] 61 Electromagnetic relay

[0112] 62 Contact spring

[0113] 64 Complementary contact spring

[0114] 66 Flat surface of mounting bracket

[0115] X Longitudinal axis

[0116] Y Vertical axis

[0117] Z Transverse axis

Claims

1. A core (1) for a coil (40), the core (1) comprising an armature abutment portion (2) for abutting an armature (48) in a closed state, an armature support portion (4) for mounting the armature (48) to the core (1), and a coil portion (6) for receiving the coil (40), the coil portion (6) extending along a longitudinal axis (X) from the armature abutment portion (2) to the armature support portion (4), wherein, The armature abutment portion (2) and at least one of the armature support portion (4) and the coil portion (6) extend along separate planes offset from each other perpendicular to the longitudinal axis (X), wherein a step (36) is formed at a transition region (34) between the armature abutment portion (2) and at least one of the armature support portion (4) and the coil portion (6), the step (36) being an inclined portion of the coil portion (6), inclined relative to the longitudinal axis (X), and connecting a portion of the coil portion (6) arranged parallel to the longitudinal axis (X) and the armature abutment portion (2) or the armature support portion (4), respectively.

2. The core (1) according to claim 1, wherein At least one flat surface (8) of the coil portion (6) is offset from a flat surface (8) of at least one of the armature abutment portion (2) and the armature support portion (4).

3. The core part (1) according to claim 1 or 2, wherein, The coil portion (6) is offset from both the armature abutment portion (2) and the armature support portion (4) in a direction perpendicular to the longitudinal axis (X).

4. The core part (1) according to claim 1 or 2, wherein, The armature abutment portion (2) and the armature support portion (4) are aligned with each other.

5. The core (1) according to claim 1 or 2, wherein The height (22) of the coil portion (6) in a direction perpendicular to the longitudinal axis (X) is smaller than the height (33) of the armature support portion (4).

6. The core part (1) according to claim 1 or 2, wherein, The material thickness (26) of the armature support part (4) is less than or equal to the material thickness (24) of the coil part (6).

7. The core part (1) according to claim 1 or 2, wherein, The coil portion (6) forms a constriction (30) of the core (1) in a direction perpendicular to the longitudinal axis (X).

8. The core part (1) according to claim 1 or 2, wherein, The armature abutment portion (2), the armature support portion (4), and the coil portion (6) are integrally formed with each other as a single-piece core (18).

9. The core (1) according to claim 1 or 2, wherein The coil portion (6) forms a relief portion (16) of the core (1).

10. The core part (1) according to claim 1, wherein, A flange (42) is provided at at least one transition region (34) for separating at least one of the armature abutment portion (2) and the armature support portion (4) from the coil portion (6).

11. The core part (1) according to claim 10, wherein, The flange (42) and the mounting bracket (44) are integrally formed with each other as a one-piece component (46), and the mounting bracket (44) is attached to the armature support portion (4) for mounting the armature (48).

12. The core part (1) according to any one of claims 1 to 11, wherein, The coil (40) is a coil (40) of a switching device (60).

13. A magnetic assembly (38) comprising a core (1) according to any one of claims 1 to 11 and a coil (40) arranged on the coil part (6).

14. The magnetic component (38) according to claim 13, wherein, The magnetic assembly (38) is used in a switching device (60).

15. The magnetic component (38) according to claim 13 or 14, wherein, An armature (48) is mounted to the armature support portion (4), the armature (48) being movable from an open configuration in which the armature (48) is away from the armature abutment portion (2) to a closed configuration in which the armature (48) abuts the armature abutment portion (2).

16. A switching device (60) comprising a magnetic assembly (38) according to any one of claims 13 to 15.

17. The switch device (60) according to claim 16, wherein: The switching device (60) is an electromagnetic relay (61).

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