Driver coil device

Abstract

The invention relates to a drive coil arrangement, in particular for a vibrating armature pump (20), comprising: at least one coil former (32); at least one coil wire wound on the bobbin (32) to form a coil (34); and at least one coil receiving portion (40) arranged to at least partially receive the coil (34). It is proposed that the coil receptacle (40) has at least one contact interface (60), which is arranged to receive at least one end (36) of the coil wire.

Description

Technical Field

[0001] The invention relates to a drive coil arrangement according to claim 1 , a vibrating armature pump according to claim 14 and a beverage vending machine according to claim 15 . Background Art

[0002] A driver coil arrangement having a coil made of copper wire is known. The coil is usually provided with an injection-molded covering which is provided to protect the coil from displacement of the coil wire or other damage. Summary of the invention

[0003] The object of the invention is in particular to provide a universal device with improved properties in terms of simple production and / or improved cooling. According to the invention, this object is achieved by the features of claim 1, while advantageous embodiments and improvements of the invention can be derived from the dependent claims.

[0004] The present invention relates to a drive coil device, in particular a drive coil device for a vibrating armature pump, which comprises: at least one coil frame; at least one coil wire, which is wound on the coil frame to form a coil; and at least one coil receiving portion, which is configured to at least partially receive the coil.

[0005] It is proposed that the coil receiving portion has at least one contact interface, which is configured to receive and, in particular, contact at least one end of the coil wire. By providing the contact interface, it is possible to achieve, in particular, a simple installation of a device having a drive coil device, in particular a vibrating armature pump. In particular, the coil frame is designed to be cylindrical, in particular a hollow cylindrical shape. In particular, the coil frame surrounds at least one cavity, which is configured to receive a magnet, in particular an armature of a vibrating armature pump. In particular, the coil is configured to generate a magnetic field at least in a current-operated state, which is configured to move the magnet from its static position. In particular, the coil is configured to be a hollow cylindrical shape. In particular, the coil is configured to be a long coil, i.e., in particular, it has a length greater than the inner diameter of the coil. For example, the coil has at least 200 turns, in particular at least 500 turns.

[0006] "Coil receiving part" should be understood in particular as a mechanical receiving part, in particular a housing. In particular, the coil receiving part is at least partially, for example at least 50%, advantageously at least 90%, formed by at least one plastic. The coil receiving part can be arranged to cover at least 30%, in particular at least 50%, advantageously at least 60% of the spatial angle around the geometric center of the coil. In particular, the coil receiving part is arranged to cover at least 30%, in particular at least 50%, advantageously at least 60% of the possible directions and / or angles around the central axis of the coil. Advantageously, the coil receiving part has holes and / or gaps. Preferably, these holes and / or gaps each have a size of a maximum of 0.2sr, advantageously a maximum of 0.1sr, preferably a maximum of 0.05sr relative to the geometric center of the coil. In particular, these holes and / or gaps are used to ventilate and / or cool the coil. In particular, these holes and / or gaps, in particular in determining the spatial angle coverage or angle coverage of the coil by the coil receiving part, should be regarded as belonging to the coil receiving part. In particular, the proportion of the holes is a maximum of 90%, for example a maximum of 50%, in particular a maximum of 30% of the solid angle covered by the coil receptacle. In particular, the holes and / or gaps each have a maximum of 2 cm 2 , for example, maximum 1cm 2 , especially up to 0.5cm 2 For example, the total area of ​​the holes and / or gaps is at most 200%, for example at most 100%, in particular at most 50% of the outer area formed by the coil receptacle. For example, at least 10%, in particular at least 50%, advantageously at least 90%, preferably at least 99% of the coil receptacle is spaced at least 0.5 mm, in particular at least 1 mm from the coil.

[0007] The coil wire preferably comprises a single metal wire which is coated with one or more insulating layers. In particular, the metal wire has a thickness of at least 0.01 mm. 2 , especially at least 0.1 mm 2 , advantageously at least 0.5 mm 2 For example, a metal wire has a cross section of maximum 2mm 2 , especially up to 1mm 2 , advantageously up to 0.5 mm 2 cross section.

[0008] According to a further embodiment, the coil wire can also be designed as a litz wire, ie can in particular have a stranding of a plurality of metal wires, which are insulated individually and / or together.

[0009] A "contact interface" is to be understood in particular as an interface having at least two contacts and being arranged to electrically connect the two contacts to one another. In particular, the contact interface is arranged to connect two different electrical conductors to one another in different ways, in particular in terms of material, line cross section and / or design.

[0010] “Contacting” is to be understood in particular to mean electrical contact, ie, for example, the establishment of a quasi-resistance-free electrical connection.

[0011] “Provided” is to be understood in particular to mean specially programmed, designed and / or equipped. Providing an object for a specific function is to be understood in particular to mean that the object performs and / or carries out the specific function in at least one application state and / or operating state.

[0012] Furthermore, it is proposed that the contact interface has at least one blade terminal, which in particular forms an internal contact and is arranged to electrically contact the coil wire by means of the blade contact. In particular, a simple and reliable contact should be achieved. The blade terminal is in particular arranged to cut the insulation layer of the coil wire and in particular to cut into the metal wire when the coil wire is introduced, so that contacting of the bare metal is achieved.

[0013] Furthermore, it is proposed that the contact interface has at least one external contact, in particular in the form of a soldering contact, for attaching the feed line, in particular on the side opposite the blade terminal. In particular, the soldering contact has at least one hole, in particular in the plate-shaped contact, which is provided to achieve a form-fitting connection, to strengthen the soldering connection and / or to partially accommodate the feed line. In particular, a mechanically and electrically stable connection can be achieved.

[0014] Alternatively or additionally, the external contact can also have a plug contact, in particular a plug contact in the form of a plug or a socket, for contacting a corresponding plug contact of the power supply line. In particular, the external contact can be provided for both a plug connection and a solder connection. According to another design, the external contact can also be formed by a blade terminal.

[0015] According to a further embodiment, it is proposed that the coil wire has an aluminum wire and is formed in particular from an insulated aluminum wire. A particularly cost-effective embodiment can be achieved. In addition, a lower weight of the drive coil device can be achieved. According to an alternative embodiment, the coil wire has a copper wire or a stainless steel wire. In addition, embodiments with wires based on one or more other conductive materials are conceivable.

[0016] Preferably, the coil housing is different from the sealed injection molded coating of the coil. The sealed injection molded coating is to be understood in particular as an injection molded coating based on, for example, silicone, epoxy and / or thermoplastics, which is arranged to protect the coil from mechanical and / or chemical damage. The sealed injection molded coating can be arranged in particular to avoid or prevent the movement of the turns of the coil wire, in particular caused by alternating magnetic loads. In particular, the sealed injection molded coating directly abuts against the coil and / or the coil wire. For example, the sealed injection molded coating may cause the turns of the coil to be displaced during the injection molding, which in turn may cause the coil to fail prematurely.

[0017] In particular, the coil has no sealing injection-molded coating. Furthermore, a smaller design and / or a weight reduction can be achieved in particular. In particular, when aluminum wire is used as the coil wire, the sealing injection-molded coating can be omitted, since aluminum is more rigid than, for example, copper. Even when copper wire is used, however, the coil receptacle can ensure the protection of the turns of the coil, even without the sealing injection-molded coating. Moreover, aluminum is less susceptible to environmental influences due to the naturally occurring passivation effect that chemically and electrically insulates the aluminum wire and is more tolerant of possible damage to the additional insulating layer. In particular, the wire ends of the coil are held and secured only by the coil receptacle.

[0018] According to another embodiment, the coil receiving portion can have at least one base body. In particular, the base body is formed in one piece with the coil former. Preferably, the coil receiving portion has at least one wall, which is connected to the base body and / or the coil former in a form-fitting and / or force-fitting manner. Preferably, the wall is connected to the base body in a tool-free installable and / or detachable manner. In particular, the wall and the base body are connected to each other by means of a snap-on connection. This allows simple installation. Preferably, the wall is configured in a grid-like manner, in particular configured with holes and / or gaps.

[0019] In addition, it is proposed that the coil accommodating portion includes at least one retainer for accommodating a thermal fuse, which is arranged to arrange the thermal fuse near the coil, especially in mechanical contact with the coil. In particular, a simple installation of the coil device can be achieved. Preferably, the coil device includes a thermal fuse. In particular, the thermal fuse is arranged to be connected in series with the coil. In particular, the thermal fuse is arranged to interrupt or at least inhibit the flow of current through the coil when the limit temperature is exceeded. In particular, the thermal fuse has a nonlinear resistance. In particular, the thermal fuse is configured as a fuse. Alternatively, the thermal fuse can have a switching element, in particular a semi-switching element or a bimetallic switching element. In particular, the retainer is arranged to accommodate the thermal fuse in a form-fitting manner, in particular by means of at least one snap-on connector.

[0020] Furthermore, the coil receiving portion can have at least one diode holder for receiving a power diode, wherein the power diode is particularly arranged to be connected in series with the coil. In particular, a simple installation of the coil arrangement can be achieved as a result. Preferably, the coil arrangement comprises a power diode. In particular, the power diode is arranged to allow a current to flow through the coil only in one current direction, in particular in order to avoid a deflection of the armature of the vibrating armature coil in the wrong direction. In particular, the diode holder is arranged to receive the power diode in a form-fitting manner, in particular by means of at least one snap-on connection.

[0021] In addition, it is proposed that the coil receiving portion has at least one, at least two or at least three other contact interfaces. In particular, the first of the other contact interfaces is arranged to contact the second end of the coil wire in particular by means of a blade terminal and to contact the first connection contact of a power diode or a thermal switch in particular by means of a blade terminal. In particular, the second of the other contact interfaces is arranged to contact the second connection contact of a thermal fuse or a thermal switch in particular by means of another blade terminal, wherein the other blade terminal in particular has another soldering contact for attaching another power feeder. In particular, the third of the other contact interfaces is arranged to contact the second connection contact of a power diode and the first connection contact of a thermal fuse. Compact structural mode and / or simple installation or assembly can be particularly achieved.

[0022] Preferably, the drive coil arrangement has at least one magnetic field binding unit, in particular also referred to as a coil core or yoke plate, which frames the coil at least relative to a main plane intersecting the longitudinal axis of the coil. In this way, a compact design and a high efficiency can be achieved in particular. The magnetic field binding unit has in particular at least one, for example at least two, magnetic field binding elements. The magnetic field binding elements are in particular at least mostly formed from ferromagnetic material, ferrite and / or a material that is at least comparable in terms of magnetic properties. In particular, the magnetic field binding unit is configured to guide and / or bind an external magnetic field of the coil.

[0023] Preferably, the wall covers the side surface of the coil that is not provided with the magnetic field binding unit. A material-saving design can be achieved in particular, since in particular the magnetic field binding unit and the coil receptacle jointly accommodate the coil. In particular, the coil receptacle can be designed to completely accommodate the coil together with the magnetic field binding unit. In particular, the wall is arranged at least substantially parallel to the main plane, so that the maximum distance of the wall from the main plane corresponds in particular to a maximum of 150%, in particular to a maximum of 110%, of the minimum distance of the wall from the main surface. Preferably, the wall has a distance to the coil, in particular at least to the turns of the coil, which is at least 2.5 mm. However, it is also conceivable that the distance between the wall and the coil is partially reduced, in particular in areas in which no components or lines are arranged on the wall.

[0024] Furthermore, it is proposed that the coil receptacle, in particular the base body, and the magnetic field binding unit each have at least one form-fitting means, which are jointly provided to connect the coil receptacle to the magnetic field binding unit in a form-fitting manner. In particular, a simple assembly can be achieved. In particular, the coil receptacle, in particular at least the base body, is arranged at least partially, in particular at least 20%, within a frame formed by the magnetic field binding unit.

[0025] According to another design scheme, the present invention relates to a drive coil device, in particular a drive coil device for a vibrating armature pump, which has at least one coil frame and at least one coil wire, which is wound on the coil frame to form a coil, wherein the coil wire has an aluminum wire. It is proposed that the drive coil device has a base body, which has a contact interface, and the contact interface is configured to accommodate at least one end of the coil wire. In particular, the base body and the coil frame are formed in a single piece. Alternatively, the base body and the coil frame are formed in multiple pieces. "Contact interface" should be understood in particular as such an interface, which has at least two contacts, and the interface is configured to electrically connect the two contacts to each other. In particular, the contact interface is configured to connect two different electrical conductors to each other in different ways, especially in terms of material, line cross section and / or design. Can especially achieve favorable weight reduction and material saving.

[0026] Furthermore, it is proposed that the coil is free of at least one wall. Preferably, the base body surrounds the coil in at least two extension directions. In particular, advantageous weight reductions and material savings can be achieved.

[0027] Furthermore, a vibrating armature pump having at least one drive coil arrangement as described above and a beverage vending machine, in particular a coffee machine, having at least one such vibrating armature pump are proposed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Further advantages result from the following description of the drawings. An embodiment of the invention is shown in the drawings. The drawings, the description and the claims contain many combined features. It is also appropriate for a person skilled in the art to consider these features individually and to combine them into meaningful further combinations. In the drawings:

[0029] Figure 1 A beverage vending machine according to the present invention is shown in a schematic diagram;

[0030] Figure 2 A schematic diagram shows a driver coil arrangement according to the present invention;

[0031] Figure 3 A schematic diagram shows a driver coil arrangement according to the present invention;

[0032] Figure 4 A schematic diagram shows a driver coil arrangement according to the present invention;

[0033] Figure 5 A schematic diagram shows a driver coil arrangement according to the present invention;

[0034] Figure 6 Shown according to Figure 5 An exploded view of the driver coil assembly; and

[0035] Figure 7 A schematic diagram shows a driver coil arrangement according to the invention. DETAILED DESCRIPTION

[0036] Figure 1 The beverage vending machine 10 is shown. The beverage vending machine 10 is designed as a coffee machine. The beverage vending machine 10 is designed as a capsule coffee machine. The beverage vending machine 10 has an operating unit 12. The beverage vending machine 10 also has a dispensing unit 14, by means of which beverages can be dispensed. The beverage vending machine 10 has a placement surface 18. The placement surface 18 is in particular designed as a screen in order to collect, for example, overflowing beverages. A storage space 16 is arranged between the placement surface 18 and the dispensing unit 14, for example for beverage containers, in particular cups with or without handles.

[0037] Furthermore, the beverage vending machine 10 has a vibrating armature pump 20. The vibrating armature pump 20 is configured to deliver a liquid. The vibrating armature pump 20 is configured to press heated water under pressure into a coffee metering capsule.

[0038] The vibrating armature pump 20 includes a driver coil arrangement 30 .

[0039] The driver coil device 30 has a coil former 32 (see Figure 2 ). In addition, the driver coil device 30 has a coil wire, which is wound around a coil former 32 to form a coil 34. The driver coil device 30 has a coil receiving portion 40, which is configured to receive the coil 34 at least partially.

[0040] The coil receptacle 40 has a contact interface 60 which is provided to receive at least one end 36 of the coil wire.

[0041] The contact interface 60 has a blade terminal 61 which is provided to electrically contact the end 36 of the coil wire by means of a blade contact.

[0042] The blade terminal 61 has a contact point configured as a plug contact for attaching a power supply line, in particular for contacting with a flat plug sleeve. Alternatively, the blade terminal 61 has a soldering contact. According to another alternative, the contact point for attaching the power supply line is configured as a separate component of the blade terminal. According to another design, the contact interface can have a contact element, in particular a spiral contact or a plug contact, for contacting the coil wire instead of a blade contact.

[0043] The coil wire has an aluminum wire. The coil wire is formed of an insulated aluminum wire.

[0044] The coil receptacle 40 is different from the sealing injection-molded coating of the coil 34. The coil 34 has no sealing injection-molded coating.

[0045] The coil receptacle 40 has a base body 42 and at least one wall 44, in particular two walls 44, 45, alternatively exactly one wall (see in particular Figure 6 ).

[0046] The contact interface 60 is formed on the base body 42. The base body 42 has, for example, two cover plates, which are each arranged on different longitudinal ends of the coil 34. The cover plates are formed in one piece with the coil former 32. The contact interface 60 is formed on one of the cover plates.

[0047] The walls 44, 45 are connected or connectable to the base body 42 in a tool-free installable and / or detachable manner. For example, the base body 42 has a locking groove, which is configured to receive the locking pins of the walls 44, 45.

[0048] According to another embodiment, it is possible that at least one of the two cover plates, in particular both cover plates, is formed separately from the coil former. For example, the two cover plates are formed in one piece with one of the walls or are rigidly and / or tool-free and inseparable connected to the wall. For example, only one of the walls is connected or connectable to the base body in a tool-free mountable and / or releasable manner.

[0049] The coil receiving portion 40 includes a retainer 46 for receiving a thermal fuse 47. The driver coil device 30 has a thermal fuse 47, which is received in the retainer 46. The retainer 46 is configured to arrange the thermal fuse 47 near the coil. The thermal fuse 47 is configured as a bimetallic switch, for example, or alternatively as a semiconductor switch. The retainer 46 is configured to receive the thermal fuse 47 itself in a particularly cage-shaped receiving chamber. The retainer 46 also has a form-fitting device, in particular a locking nose, which is configured to retain the thermal fuse 47 in the receiving chamber. The retainer 46 is formed by the coil receiving portion 40, in particular the wall 44 itself, in particular formed therein. The retainer 46 is formed on the wall 44.

[0050] The coil receptacle 40 has a diode holder 48 for receiving a power diode. In the illustrated arrangement, the driver coil arrangement 30 does not have a power diode arranged in the diode holder 48. According to another embodiment, the diode holder 48 is omitted. The diode holder 48 is formed by the coil receptacle 40, in particular the base body 42, for example one of the cover plates itself, in particular is integrally formed therein.

[0051] The coil receiving portion 40 has three further contact interfaces 62, 64, 66. The first of the further contact interfaces 62 is arranged to electrically contact the second end 38 of the coil wire by means of a double blade terminal 63. The double blade terminal 63 is also arranged to electrically contact the first connection contact of the thermal fuse 47.

[0052] A second one of the further contact interfaces 64 is provided for contacting a second connecting contact of the thermal fuse 47 by means of a further blade terminal 65 , wherein the further blade terminal 65 has a further contact point designed as a plug contact for attaching a further power supply line.

[0053] The third of the further contact connections 66 remains unassembled. According to another embodiment, the further third contact connection 66 is omitted.

[0054] The driver coil device 30 also has a magnetic field binding unit 50, which frames the coil 34 at least relative to a main plane intersecting the longitudinal axis of the coil 34. The magnetic field binding unit 50 has a magnetic field binding element 52. The magnetic field binding element 52 is formed by a ferromagnetic material. The magnetic field binding element 52 forms a frame around the coil 34. The coil receptacle 40, in particular at least the base body 42 or the cover of the base body 42 is partially arranged in the frame. The wall 44 covers the side surface of the coil 34, which is free of the magnetic field binding unit 50. The wall 44 covers the open side of the frame formed by the magnetic field binding unit. The magnetic field binding unit 50 also includes pole sleeves 70, 72, which are arranged in an inner space surrounded by the coil 34 and the coil frame 32, in particular in order to direct, guide and / or guide the magnetic field generated by the coil during operation (see in particular Figure 6 ). The pole sleeves 70, 72 are separated from each other by a non-magnetic spacer ring 74. The pole sleeves 72, 74 are both slotted. The pole sleeves 70, 72 each have a longitudinal groove. The pole sleeves 70, 72 are formed, for example, from rolled and / or bent metal sheets.

[0055] Alternatively, the pole sleeve can also be designed without longitudinal grooves, in particular as a turned part.

[0056] The coil receiving part 40 and the magnetic field binding unit 50 both have form-fitting means 56, 43, which are jointly arranged to connect the coil receiving part 40 and the magnetic field binding unit 50 in a form-fitting manner or to determine at least one position of the magnetic field binding unit 50, in particular at least the magnetic field binding element 52, relative to the coil receiving part 40. During assembly, after the coil 34 is wound, the magnetic field binding element 52 is sleeved onto the base body 42 of the coil receiving part 40. Then, the pole sleeves 70, 72 and the spacer ring 74 are introduced into the coil former 32. The pole sleeves 70, 72 protrude slightly from the coil former 32 and are arranged to connect the coil former 32 and the magnetic field binding element 52 to each other in a form-fitting manner.

[0057] According to an alternative embodiment, it is conceivable that the magnetic field binding element which forms a frame around the coil is designed in multiple parts.

[0058] exist Figures 3 to 5 and Figure 7In the figure, three further embodiments of the invention are shown. To distinguish the embodiments, the letters a, b, c or b are respectively added to the reference numerals of the further embodiments, wherein the same reference numerals may be used for components that are identical or at least functionally similar. The further description is essentially limited to the differences between the embodiments, wherein reference may be made to the corresponding components, features and functions. Figure 1 to Figure 2 For components with the same names, in particular components with the same reference numerals, reference can also be made in principle to Figure 1 to Figure 2 Figures and / or descriptions of embodiments of the present invention.

[0059] Figure 3 The driver coil arrangement 30a is shown. The driver coil arrangement 30a has a power diode 49a. The power diode 49a is connected in series with the coil 34a. The diode holder 48a is configured to receive two of the contact wires of the power diode 49a, in particular in each case in a clamping piece of the diode holder in a form-fitting manner, wherein the power diode itself is preferably arranged between the clamping pieces.

[0060] A first of the further contact interfaces 62a is provided for contacting the second end 38a of the coil wire by means of a double blade terminal 63a and for contacting a first connecting contact of a power diode 49a.

[0061] A second one of the further contact interfaces 64a is provided to contact a second connection contact of the thermal fuse 47a by means of a further blade terminal 65a, wherein the further blade terminal 65a has a further soldering contact for attaching a further power supply line.

[0062] A third one of the further contact interfaces 66 a is provided to contact the second connection contact of the power diode 49 a and the first connection contact of the thermal fuse 47 a .

[0063] Figure 4 Shown according to Figure 2 A variation of the design scheme of , in which the thermal fuse 47b is formed as a fuse. The retainer 46b is configured as a clamping member, which is arranged to surround the thermal fuse 47b. The coil receiving portion 40b, in particular the wall 44b, has a guide channel to guide and retain the contact conductor of the thermal fuse 47b to the contact interface 64, 66.

[0064] Figure 5 Shown according to Figure 3 A variation of the design of , in which thermal fuse 47c is designed as a fuse.

[0065] Figure 6 Example according to Figure 5In addition to the modifications in the design of the wall 44, the thermal fuse 47 and / or the power diode 49, according to Figures 1 to 4 The design scheme has an equivalent exploded view.

[0066] Figure 7 An embodiment of a driver coil device 30d is shown, which has a coil frame 32d and a coil wire, which is wound on the coil frame 32d to form a coil 34d, wherein the coil wire has an aluminum wire. The driver coil device 30d has a base body 42d, which has a contact interface 60d, and the contact interface 60d is configured to receive at least one end of the coil wire 36d. The base body 42d and the coil frame 32d are formed in a single piece. Alternatively, the base body 42d and the coil frame 32d are formed in multiple pieces. The driver coil device 30d has no wall. The base body 42d surrounds the coil 34d in at least two extension directions. Description of reference numerals: 10 Beverage vending machines 12 operation units 14 output units 16 Storage Space 18 Placement Surface 20 Vibrating armature pump 30 Driver coil assembly 32 Coil frame 34 coils 36 end 38 end 40 coil accommodating part 42 Matrix 43Form-fitting devices 44 walls 45 wall 46 retainer 47 Thermal Fuse 48 diode keeper 49 Power diode 50 magnetic field binding units 52 Magnetic field binding element 56Form-fitting devices 60-contact interface 61 blade terminal 62-contact interface 63 double blade terminal 64-contact interface 65 blade terminal 66-contact interface 70-pole sleeve 72-pole sleeve 74 Spacer Ring

Claims

1. A drive coil device, in particular a drive coil device for a vibrating armature pump (20), comprising: at least one coil former (32); at least one coil wire, which is wound onto the coil former (32) to form a coil (34); and at least one coil receiving portion (40), which is configured to at least partially receive the coil (34), characterized in that: The coil accommodating portion (40) has at least one contact interface (60), and the contact interface (60) is configured to receive at least one end portion (36) of the coil wire.

2. The driver coil device according to claim 1, characterized in that: The contact interface (60) has at least one blade-shaped terminal (61), and the blade-shaped terminal (61) is configured to electrically contact the coil wire by means of a blade-shaped contact.

3. The driver coil device according to claim 2, characterized in that: The blade terminal (61) has at least one contact point, in particular a plug contact, for attaching a power supply line.

4. A driver coil arrangement according to any one of the preceding claims, characterized in that The coil wire has an aluminum wire.

5. The driver coil arrangement according to the preamble of claim 1 and in particular according to any one of the preceding claims, characterized in that The coil receptacle (40) has at least one wall (44, 45) which is connected to the coil former (32) in a form-fitting and / or force-fitting manner.

6. A driver coil arrangement according to any one of the preceding claims, characterized in that The coil receiving portion (40) is different from the sealing injection-molded coating of the coil (34).

7. A driver coil arrangement according to any one of the preceding claims, characterized in that The coil (34) has no sealing injection-molded coating.

8. A driver coil arrangement according to any one of the preceding claims, characterized in that The coil accommodating portion (40) includes at least one retainer (46) for receiving a thermal fuse (47), the retainer (46) being configured to arrange the thermal fuse (47) near the coil.

9. A driver coil arrangement according to any one of the preceding claims, characterized in that The coil accommodating portion (40) has at least one diode holder (48) for accommodating a power diode (49), and the power diode (49) is arranged to be connected in series with the coil (34).

10. A driver coil arrangement according to claims 3, 8 and 9, characterized in that The coil receptacle (40) has at least three further contact connections (62, 64, 66), wherein: - a first one of the further contact interfaces (62) is arranged to contact the second end (38) of the coil wire and the first connection contact of the power diode (49) by means of a double blade terminal (63); - a second one of the further contact interfaces (64) is arranged to contact a second connection contact of the thermal fuse (47) by means of a further blade terminal (65), wherein the further blade terminal (65) has a further soldering contact for attaching a further feeder line; and A third of the further contact interfaces (66) is arranged to contact the second connection contact of the power diode (49) and the first connection contact of the thermal fuse (47).

11. A driver coil arrangement according to any one of the preceding claims, characterized in that At least one magnetic field binding unit (50) frames the coil (34) at least with respect to a main plane intersecting a longitudinal axis of the coil (34).

12. The driver coil device according to claim 11, characterized in that The coil accommodating portion (40) has at least one wall (44) which covers a side surface of the coil (34) that is not provided with the magnetic field binding unit (50).

13. The driver coil device according to claim 11 or 12, characterized in that: The coil receiving portion (40) and the magnetic field binding unit (50) each have at least one form-fitting device (43, 56), and the form-fitting devices (43, 56) are jointly arranged to connect the coil receiving portion (40) and the magnetic field binding unit (50) in a form-fitting manner.

14. A drive coil device, in particular a drive coil device for a vibrating armature pump (20), comprising at least one coil former (32) and at least one coil wire, the coil wire being wound around the coil former (32) to form a coil (34), the coil wire comprising an aluminum wire, characterized in that A base body (42) has at least one contact interface (60) configured to receive at least one end (36) of the coil wire.

15. The driver coil device according to claim 14, characterized in that: The coil (34) is devoid of at least one wall (44, 45).

16. A vibrating armature pump having a drive coil arrangement (30) according to any one of the preceding claims.

17. A beverage vending machine, in particular a coffee machine, comprising at least one vibrating armature pump (20) according to claim 14.

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