EP4290537A1 - Throttle and method for manufacturing such a throttle - Google Patents
Throttle and method for manufacturing such a throttle Download PDFInfo
- Publication number
- EP4290537A1 EP4290537A1 EP22178352.5A EP22178352A EP4290537A1 EP 4290537 A1 EP4290537 A1 EP 4290537A1 EP 22178352 A EP22178352 A EP 22178352A EP 4290537 A1 EP4290537 A1 EP 4290537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bobbin
- throttle
- base plate
- magnetic core
- sheets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 5
- 238000004804 winding Methods 0.000 claims abstract description 36
- 239000004033 plastic Substances 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
- H01F5/02—Coils wound on non-magnetic supports, e.g. formers
Definitions
- the invention relates to a choke with at least one winding, each with two connections and a magnetic core provided with an air gap, which magnetic core is made up of a large number of sheets stacked one on top of the other.
- the invention further relates to a method for producing or assembling such a throttle.
- a choke is a coil or inductor for limiting currents in electrical lines, for temporarily storing energy, for impedance matching or for filtering.
- Such chokes with a magnetic core are used for various functions, particularly in more powerful electrical devices. To avoid saturation, the magnetic core has an air gap.
- Such chokes are used, for example, in inverters, in particular photovoltaic inverters, in the power section, for example as output filter chokes. Such chokes are also used in welding machines, battery chargers and other electrical devices.
- Chokes whose magnetic core consists of a large number of sheets stacked one on top of the other, in particular made of iron or another magnetic material, are usually manufactured and assembled by screwing the sheet metal package together using screws and pressure plates.
- a so-called air gap plate made of non-magnetic material is often included in the legs of the magnetic core in order to be able to create a defined air gap.
- the amount of work and thus the labor costs for assembling the sheets of the magnetic core is very high when producing and assembling the throttle.
- a bobbin for a transformer is protected, which contains locking elements on the front side of the flange areas, on which further bobbins can be mechanically coupled to one another.
- the structure of the individual bobbins is not discussed in detail.
- the object of the present invention is to create a throttle and a method for producing such a throttle, whereby a throttle can be manufactured or constructed as quickly and easily as possible and, if possible, without additional parts. Disadvantages of known throttles, which have to be manufactured with relatively great effort, should be avoided or at least reduced.
- a bobbin is provided for receiving the at least one winding, which bobbin consists of at least two parts which can be connected to one another without tools, and a base plate is also provided for receiving the sheets of the magnetic core , which base plate can be connected to the bobbin without tools.
- a coil body is created from at least two parts and a base body, which hold the at least one winding and the sheets of the magnetic core and can be connected to one another without tools. The sheets of the magnetic core are held in the desired position by the parts of the coil former and the base plate, without the need for fastening screws and corresponding tools.
- the parts of the coil body and the base plate are designed in such a way that the desired air gap in the magnetic core is maintained without the need to arrange a separate air gap plate.
- the throttle can therefore be manufactured or assembled particularly quickly and easily.
- the disassembly is preferably also carried out without tools.
- assembled chokes are often immersed in a paint or resin bath in order to insulate them and, above all, to protect the metal sheets of the magnetic core from corrosion. In this case it is Dismantling the throttle is not planned and also not desirable.
- the at least two parts of the bobbin have locking elements for connecting the at least two parts of the bobbin without tools.
- locking elements By appropriate structural design of the locking elements, a simple and quick, tool-free connection of the at least two parts of the bobbin can be achieved after receiving the at least one winding of the throttle. If necessary, a separation of the at least two parts of the bobbin can also be achieved again.
- the locking elements can also be designed in such a way that only a one-time connection of the parts of the bobbin is permitted.
- the base plate of the throttle and the at least two parts of the bobbin also preferably have latching elements for connecting the base plate to the bobbin without tools.
- the magnetic core consisting of the sheets stacked one on top of the other can be assembled in the correct position without the use of additional fastening elements, such as fastening screws, and held in this position after the base plate has been connected to the bobbin.
- additional fastening elements such as fastening screws
- the latching elements can, for example, each be formed by a latching lug and by an opening or a projection for receiving the latching lug. This represents a simple implementation of a tool-free connection.
- the coil body and the base plate are made of plastic, which has no influence on the magnetic field of the choke and provides electrical insulation between the magnetic core and the at least one winding.
- the corresponding locking elements for connecting the parts of the bobbin and for connecting the base plate to the bobbin are preferably made immediately during manufacture Parts of the bobbin and the base plate are provided, so that no complex subsequent processing of the components is necessary.
- the plastic it is important to pay attention to its ease of processing and certain properties such as temperature resistance or flame retardancy.
- polyamide is suitable for producing the bobbin and the base plate.
- the bobbin and the base plate are preferably manufactured using an injection molding process or 3D printing process. This means that even more complex geometries of the components of the throttle can be produced quickly and cost-effectively, at least for larger quantities.
- the base plate contains pins and the sheets for building the magnetic core have corresponding openings, the sheets can be stacked on top of each other on the pins easily and, above all, without tools, to form the magnetic core.
- the pins of the base plate preferably have stiffening ribs. Such stiffening ribs give the pins the necessary stability even when the material is thin and ensure the correct position of the sheets of the magnetic core by adapting the openings in the sheets to the contour of the pins in cross section.
- the magnetic core can consist of an E-shaped part and an I-shaped part, with the air gap being formed between the free ends of the E-shaped part and the I-shaped part.
- windings can be arranged on one or all legs of the E-shaped magnetic core, which produce the corresponding magnetic field.
- An edge to form the air gap is arranged on at least part of the bobbin. With such an edge on at least part of the coil body, a defined air gap can be defined and maintained without the need for an air gap plate as a separate component of the throttle. This makes the production of the throttle or its assembly even easier.
- the throttle can be mounted quickly and easily on a circuit board or the like with simple electrical contacting of the connections of the throttle.
- the connections of the prefabricated windings protrude through these openings in the base plate and can be quickly and easily soldered to contact surfaces on a circuit board or connected via clamp connections.
- part of the bobbin contains elements for placing the at least one winding.
- the at least one prefabricated winding can be quickly arranged on these elements and the choke can be produced quickly and, above all, without tools.
- Additional centering elements are preferably provided, which center the at least one winding accordingly and determine its desired position.
- the base plate with the pins is moved through the openings in the sheets. This allows the magnetic core to be assembled and held in its desired position without the use of mounting screws.
- the tool-free connection of the first part of the bobbin to the second part of the bobbin and the tool-free connection of the base plate to the bobbin are accomplished by snapping locking lugs into corresponding openings on the parts of the bobbin and the base plate.
- the choke can be immersed in a paint bath, especially a bath of water-based paint, and preferably dried at a higher temperature, especially 100°C to 150°C, the choke can be insulated and protected from environmental influences and corrosion. Solvent-based paints can be used. In addition, the assembled choke can also be covered or cast with resins.
- Fig. 1 is a perspective view of a throttle 1 constructed according to the invention with an E-shaped magnetic core 5.
- the throttle 1 shown contains three windings 2, each with two connections 3, 4.
- the magnetic core 5 is made up of a large number of sheets 7 stacked one above the other, in particular made of iron or an iron alloy.
- the magnetic core 5 consists of an E-shaped part 5 'and an I-shaped part 5'', with an air gap 6 with a defined one between the free ends of the legs of the E-shaped part 5' and the I-shaped part 5". Width is arranged.
- the three windings 2 are arranged, which cause a corresponding magnetic field when current flows through the windings 2.
- a bobbin 8 preferably made of plastic, is used for receiving the windings 2 are provided.
- the bobbin 8 is made up of at least two parts 9, 10, which can be connected to one another without tools.
- a base plate 11 is provided, which is also preferably made of plastic and serves to hold the sheets 7 of the magnetic core 5.
- the base plate 11 can be connected to the bobbin 8 or at least a part 9, 10 of the bobbin without tools.
- locking elements 12, 13 are preferably arranged (see Figures 2 to 8 ).
- Corresponding locking elements 14, 15 are also preferably used to connect the base plate 11 to the bobbin 8 without tools (see Figures 2 to 8 ).
- the base plate 11 preferably contains pins 16 on which the sheets 7 can be stacked one above the other with corresponding openings 17 to build up the magnetic core 5.
- the pins can have stiffening ribs 24 (see Fig. 7 ). Openings 19 for passing through the connections 3, 4 of the windings 2 can also be arranged in the base plate 11.
- the throttle 1 shown can be assembled or manufactured very easily and quickly without tools, without the need for fastening screws, pressure plates or air gap plates.
- a part 9 of the bobbin 8 is shown, which is used to hold the windings 2.
- the part 9 of the bobbin is preferably made of plastic using injection molding or 3D printing.
- latching elements 12, 15 for connection to the second part 10 of the bobbin 8 and for connection to the base plate 11 are arranged.
- the locking elements 12 for connection to the second part 10 of the bobbin 8 are formed by corresponding locking lugs 22.
- the locking element 15 for connecting the part 9 of the bobbin 8 to the base plate 11 is formed by an opening 23.
- Further 8 centering elements 21 are provided on part 9 of the bobbin, through which the windings 2 are centered and held in the desired position.
- Fig. 3 shows the part 9 of the bobbin 8 with arranged windings 2.
- the three windings 2 are pushed onto the elements 20 of the part 9 and through the centering elements 21 (see Fig. 2 ) held in the desired position.
- the connections 3, 4 of the windings 2 protrude downwards and can later be soldered to a circuit board, for example (not shown).
- the second part 10 of the bobbin 8 is connected to the part 9 without tools.
- latching elements 13 are provided on part 10, which are designed to be complementary to the latching elements 12 of the first part 9 of the bobbin 8.
- the locking elements 13 on part 10 of the bobbin 8 are designed for connection to the part 9 through openings 23 or projections into which the locking elements 12 of the part 9 designed as locking lugs 22 snap.
- corresponding locking elements 15 are also arranged on the part 10, for example in the form of an opening 23 or a projection for receiving a locking lug 22 on the base plate 11.
- the sheets 7 are arranged to form the E-shaped part 5 'of the magnetic core 5.
- the part 10 of the coil former 8 has an edge 18.
- the sheets 7 are arranged to form the I-shaped part 5" of the magnetic core 5 on part 10 of the bobbin 8, the edge 18 on part 10 ensures that an air gap 6 is maintained between the E-shaped part 5' and the I-shaped part 5 " of the magnetic core 5 with a defined width.
- Fig. 7 shows a base plate 11 of the throttle according to the invention, which is also preferably made of plastic using injection molding or 3D printing.
- the base plate 11 has pins 16, which preferably have stiffening ribs 24.
- openings 19 are arranged in the base plate for the connections 3, 4 of the windings 2 to pass through.
- the stiffening ribs 24 of the pins 16 are designed so that the sheets 7 can be arranged with corresponding openings 17 to form the magnetic core 5.
- Fig. 8 is shown how the base plate 11 is connected to the parts 9, 10 of the bobbin 8 without tools.
- the windings 2 and sheets 7 of the magnetic core 5 have been hidden for better visibility.
- the base plate 11 is connected to the parts 9, 10 of the bobbin via the locking elements 14, 15, which are formed, for example, by locking lugs 22 and openings 23. With the arrangement of the windings 2 and sheets 7 of the magnetic core 5, the throttle 1 results Fig. 1 .
- the present invention enables rapid and tool-free production of a throttle 1 with at least one winding 2 and a magnetic core 5, which is interrupted by an air gap 6, without additional elements.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Die Erfindung betrifft eine Drossel (1) mit zumindest einer Wicklung (2) mit jeweils zwei Anschlüssen (3, 4) und einem mit einem Luftspalt (6) versehenen Magnetkern (5), welcher Magnetkern (5) aus einer Vielzahl übereinander gestapelter Bleche (7) aufgebaut ist, und ein Verfahren zur Herstellung einer solchen Drossel (1). Erfindungsgemäß ist ein Spulenkörper (8) zur Aufnahme der zumindest einen Wicklung (2) vorgesehen, welcher Spulenkörper (8) aus zumindest zwei Teilen (9, 10) besteht, welche werkzeuglos miteinander verbindbar sind, und weiters eine Grundplatte (11) zur Aufnahme der Bleche (7) des Magnetkerns (5) vorgesehen, welche Grundplatte (11) mit dem Spulenkörper (8) werkzeuglos verbindbar ist.
The invention relates to a choke (1) with at least one winding (2), each with two connections (3, 4) and a magnetic core (5) provided with an air gap (6), which magnetic core (5) consists of a large number of sheets (5) stacked one above the other ( 7) is constructed, and a method for producing such a throttle (1). According to the invention, a bobbin (8) is provided for receiving the at least one winding (2), which bobbin (8) consists of at least two parts (9, 10) which can be connected to one another without tools, and furthermore a base plate (11) for receiving the Sheets (7) of the magnetic core (5) are provided, which base plate (11) can be connected to the coil body (8) without tools.Description
Die Erfindung betrifft eine Drossel mit zumindest einer Wicklung mit jeweils zwei Anschlüssen und einem mit einem Luftspalt versehenen Magnetkern, welcher Magnetkern aus einer Vielzahl übereinander gestapelter Bleche aufgebaut ist.The invention relates to a choke with at least one winding, each with two connections and a magnetic core provided with an air gap, which magnetic core is made up of a large number of sheets stacked one on top of the other.
Weiters betrifft die Erfindung ein Verfahren zur Herstellung bzw. zum Zusammenbau einer solchen Drossel.The invention further relates to a method for producing or assembling such a throttle.
Eine Drossel ist eine Spule bzw. Induktivität zur Begrenzung von Strömen in elektrischen Leitungen, zur Zwischenspeicherung von Energie, zur Impedanzanpassung oder zur Filterung. Insbesondere in leistungsstärkeren elektrischen Geräten werden derartige Drosseln mit Magnetkern für verschiedene Funktionen eingesetzt. Zur Vermeidung der Sättigung weist der Magnetkern einen Luftspalt auf.A choke is a coil or inductor for limiting currents in electrical lines, for temporarily storing energy, for impedance matching or for filtering. Such chokes with a magnetic core are used for various functions, particularly in more powerful electrical devices. To avoid saturation, the magnetic core has an air gap.
Derartige Drosseln werden beispielsweise bei Wechselrichtern, insbesondere Photovoltaik-Wechselrichtern, im Leistungsteil, beispielsweise als Ausgangsfilterdrosseln, eingesetzt. Auch bei Schweißgeräten, Batterieladegeräten aber auch anderen elektrischen Geräten werden solche Drosseln eingesetzt.Such chokes are used, for example, in inverters, in particular photovoltaic inverters, in the power section, for example as output filter chokes. Such chokes are also used in welding machines, battery chargers and other electrical devices.
Drosseln, deren Magnetkern aus einer Vielzahl übereinander gestapelter Bleche, insbesondere aus Eisen oder einem anderen magnetischen Material, besteht, werden üblicherweise durch Verschrauben des Blechpakets mit Hilfe von Schrauben und Druckplatten hergestellt und montiert. Zusätzlich wird oft eine sogenannte Luftspaltplatte aus nicht magnetischem Material in den Schenkeln des Magnetkerns beigelegt, um einen definierten Luftspalt realisieren zu können. Der Arbeitsaufwand und somit die Arbeitskosten für die Montage der Bleche des Magnetkerns ist bei der Herstellung und Montage der Drossel sehr hoch. Zusätzlich fallen Kosten für die Schrauben, Druckplatten und die Luftspaltplatte an.Chokes whose magnetic core consists of a large number of sheets stacked one on top of the other, in particular made of iron or another magnetic material, are usually manufactured and assembled by screwing the sheet metal package together using screws and pressure plates. In addition, a so-called air gap plate made of non-magnetic material is often included in the legs of the magnetic core in order to be able to create a defined air gap. The amount of work and thus the labor costs for assembling the sheets of the magnetic core is very high when producing and assembling the throttle. In addition, there are costs for the screws, pressure plates and the air gap plate.
In der
In der
Die Aufgabe der vorliegenden Erfindung besteht in der Schaffung einer Drossel und eines Verfahrens zur Herstellung einer solchen Drossel, wodurch eine Drossel möglichst rasch und einfach und möglichst ohne zusätzliche Teile hergestellt bzw. aufgebaut werden kann. Nachteile bekannter Drosseln, welche mit relativ großem Aufwand hergestellt werden müssen, sollen vermieden oder zumindest reduziert werden.The object of the present invention is to create a throttle and a method for producing such a throttle, whereby a throttle can be manufactured or constructed as quickly and easily as possible and, if possible, without additional parts. Disadvantages of known throttles, which have to be manufactured with relatively great effort, should be avoided or at least reduced.
Gelöst wird die erfindungsgemäße Aufgabe durch eine oben genannte Drossel, wobei ein Spulenkörper zur Aufnahme der zumindest einen Wicklung vorgesehen ist, welcher Spulenkörper aus zumindest zwei Teilen besteht, welche werkzeuglos miteinander verbindbar sind, und wobei weiters eine Grundplatte zur Aufnahme der Bleche des Magnetkerns vorgesehen ist, welche Grundplatte mit dem Spulenkörper werkzeuglos verbindbar ist. Erfindungsgemäß wird ein Spulenkörper aus zumindest zwei Teilen und ein Grundkörper geschaffen, welche die zumindest eine Wicklung und die Bleche des Magnetkerns halten und werkzeuglos miteinander verbunden werden können. Die Bleche des Magnetkerns werden durch die Teile des Spulenkörpers und die Grundplatte in der gewünschten Position gehalten, ohne dass Befestigungsschrauben und entsprechendes Werkzeug notwendig ist. Gleichzeitig werden die Teile des Spulenkörpers und die Grundplatte so gestaltet, dass der gewünschte Luftspalt im Magnetkern eingehalten wird, ohne dass die Anordnung einer eigenen Luftspaltplatte erforderlich ist. Somit kann die Drossel besonders rasch und einfach hergestellt bzw. zusammengebaut werden. In Abhängigkeit der Gestaltung der Teile des Spulenkörpers und der Grundplatte kann gegebenenfalls auch ein Zerlegen der Drossel ermöglicht werden. Dabei erfolgt die Zerlegung vorzugsweise ebenfalls werkzeuglos. Häufig werden zusammengebaute Drosseln aber in ein Lack- oder Harzbad getaucht, um diese zu isolieren und vor allem die Bleche des Magnetkerns vor Korrosion zu schützen. In diesem Fall ist eine Zerlegung der Drossel nicht vorgesehen und auch nicht erwünscht.The object according to the invention is achieved by an above-mentioned throttle, wherein a bobbin is provided for receiving the at least one winding, which bobbin consists of at least two parts which can be connected to one another without tools, and a base plate is also provided for receiving the sheets of the magnetic core , which base plate can be connected to the bobbin without tools. According to the invention, a coil body is created from at least two parts and a base body, which hold the at least one winding and the sheets of the magnetic core and can be connected to one another without tools. The sheets of the magnetic core are held in the desired position by the parts of the coil former and the base plate, without the need for fastening screws and corresponding tools. At the same time, the parts of the coil body and the base plate are designed in such a way that the desired air gap in the magnetic core is maintained without the need to arrange a separate air gap plate. The throttle can therefore be manufactured or assembled particularly quickly and easily. Depending on the design of the parts of the coil former and the base plate, it may also be possible to disassemble the throttle. The disassembly is preferably also carried out without tools. However, assembled chokes are often immersed in a paint or resin bath in order to insulate them and, above all, to protect the metal sheets of the magnetic core from corrosion. In this case it is Dismantling the throttle is not planned and also not desirable.
Gemäß einem weiteren Merkmal der Erfindung weisen die zumindest zwei Teile des Spulenkörpers Rastelemente zur werkzeuglosen Verbindung der zumindest zwei Teile des Spulenkörpers auf. Durch entsprechende konstruktive Gestaltung der Rastelemente kann eine einfache und rasche werkzeuglose Verbindung der zumindest zwei Teile des Spulenkörpers nach der Aufnahme der zumindest einen Wicklung der Drossel erzielt werden. Gegebenenfalls kann auch wieder eine Trennung der zumindest zwei Teile des Spulenkörpers erzielt werden. Die Rastelemente können aber auch so gestaltet werden, dass nur eine einmalige Verbindung der Teile des Spulenkörpers zulässig ist.According to a further feature of the invention, the at least two parts of the bobbin have locking elements for connecting the at least two parts of the bobbin without tools. By appropriate structural design of the locking elements, a simple and quick, tool-free connection of the at least two parts of the bobbin can be achieved after receiving the at least one winding of the throttle. If necessary, a separation of the at least two parts of the bobbin can also be achieved again. The locking elements can also be designed in such a way that only a one-time connection of the parts of the bobbin is permitted.
Auch die Grundplatte der Drossel und die zumindest zwei Teile des Spulenkörpers weisen bevorzugt Rastelemente zur werkzeuglosen Verbindung der Grundplatte mit dem Spulenkörper auf. Auf diese Weise kann der aus den übereinandergestapelten Blechen bestehende Magnetkern ohne die Verwendung zusätzlicher Befestigungselemente, wie Befestigungsschrauben, in der richtigen Position zusammengebaut und nach der Verbindung der Grundplatte mit dem Spulenkörper in dieser Position gehalten werden. Auch hier kann gegebenenfalls auch wieder eine Trennung der Grundplatte vom Spulenkörper ermöglicht werden oder eine unlösbare Verriegelung erzielt werden.The base plate of the throttle and the at least two parts of the bobbin also preferably have latching elements for connecting the base plate to the bobbin without tools. In this way, the magnetic core consisting of the sheets stacked one on top of the other can be assembled in the correct position without the use of additional fastening elements, such as fastening screws, and held in this position after the base plate has been connected to the bobbin. Here too, a separation of the base plate from the bobbin can be made possible again or an inseparable lock can be achieved.
Die Rastelemente können beispielsweise jeweils durch eine Rastnase und durch eine Öffnung bzw. einen Vorsprung zur Aufnahme der Rastnase gebildet sein. Dies stellt eine einfache Realisierung einer werkzeuglosen Verbindung dar.The latching elements can, for example, each be formed by a latching lug and by an opening or a projection for receiving the latching lug. This represents a simple implementation of a tool-free connection.
Idealerweise bestehen der Spulenkörper und die Grundplatte aus Kunststoff, welcher keinen Einfluss auf das Magnetfeld der Drossel besitzt und eine elektrische Isolierung zwischen dem Magnetkern und der zumindest einen Wicklung bewirkt. Somit lassen sich die Bestandteile der Drossel einfach und kostengünstig herstellen. Die entsprechenden Rastelemente zur Verbindung der Teile des Spulenkörpers sowie zur Verbindung der Grundplatte mit dem Spulenkörper werden vorzugsweise gleich bei der Herstellung der Teile des Spulenkörpers und der Grundplatte vorgesehen, sodass keine aufwändige nachträgliche Bearbeitung der Bestandteile notwendig ist. Bei der Auswahl des Kunststoffes ist auf eine leichte Verarbeitbarkeit zu achten und auf bestimmte Eigenschaften, wie Temperaturbeständigkeit oder Flammschutzeigenschaften. Beispielsweise eignet sich Polyamid für die Herstellung des Spulenkörpers und der Grundplatte.Ideally, the coil body and the base plate are made of plastic, which has no influence on the magnetic field of the choke and provides electrical insulation between the magnetic core and the at least one winding. This means that the components of the throttle can be manufactured easily and cost-effectively. The corresponding locking elements for connecting the parts of the bobbin and for connecting the base plate to the bobbin are preferably made immediately during manufacture Parts of the bobbin and the base plate are provided, so that no complex subsequent processing of the components is necessary. When selecting the plastic, it is important to pay attention to its ease of processing and certain properties such as temperature resistance or flame retardancy. For example, polyamide is suitable for producing the bobbin and the base plate.
Dabei sind der Spulenkörper und die Grundplatte vorzugsweise in einem Spritzgießverfahren oder 3D-Druckverfahren hergestellt. Dadurch können auch komplexere Geometrien der Bestandteile der Drossel rasch und zumindest bei höheren Stückzahlen auch kostengünstig hergestellt werden.The bobbin and the base plate are preferably manufactured using an injection molding process or 3D printing process. This means that even more complex geometries of the components of the throttle can be produced quickly and cost-effectively, at least for larger quantities.
Wenn die Grundplatte Stifte enthält, und die Bleche zum Aufbau des Magnetkerns entsprechende Öffnungen aufweisen, können zur Bildung des Magnetkerns die Bleche einfach und vor allem werkzeuglos auf den Stiften übereinander gestapelt werden.If the base plate contains pins and the sheets for building the magnetic core have corresponding openings, the sheets can be stacked on top of each other on the pins easily and, above all, without tools, to form the magnetic core.
Die Stifte der Grundplatte weisen vorzugsweise Versteifungsrippen auf. Derartige Versteifungsrippen verleihen den Stiften auch bei geringer Materialstärke die notwendige Stabilität und sorgen für die richtige Position der Bleche des Magnetkerns, indem die Öffnungen in den Blechen entsprechend an die Kontur der Stifte im Querschnitt angepasst werden.The pins of the base plate preferably have stiffening ribs. Such stiffening ribs give the pins the necessary stability even when the material is thin and ensure the correct position of the sheets of the magnetic core by adapting the openings in the sheets to the contour of the pins in cross section.
Der Magnetkern kann aus einem E-förmigen Teil und einem I-förmigen Teil bestehen, wobei zwischen den freien Enden des E-förmigen Teils und dem I-förmigen Teil der Luftspalt gebildet ist. Je nach Ausführungsform der Drossel können auf einem oder allen Schenkeln des E-förmigen Magnetkerns Wicklungen angeordnet werden, welche das entsprechende Magnetfeld hervorrufen.The magnetic core can consist of an E-shaped part and an I-shaped part, with the air gap being formed between the free ends of the E-shaped part and the I-shaped part. Depending on the embodiment of the throttle, windings can be arranged on one or all legs of the E-shaped magnetic core, which produce the corresponding magnetic field.
An zumindest einem Teil des Spulenkörpers ist ein Rand zur Bildung des Luftspalts angeordnet. Durch einen solchen Rand an zumindest einem Teil des Spulenkörpers kann ein definierter Luftspalt festgelegt und eingehalten werden, ohne dass eine Luftspaltplatte als eigener Bestandteil der Drossel notwendig ist. Somit wird die Herstellung der Drossel bzw. deren Zusammenbau noch weiter vereinfacht.An edge to form the air gap is arranged on at least part of the bobbin. With such an edge on at least part of the coil body, a defined air gap can be defined and maintained without the need for an air gap plate as a separate component of the throttle. This makes the production of the throttle or its assembly even easier.
Wenn in der Grundplatte Öffnungen zur Durchführung der Anschlüsse der zumindest einen Wicklung angeordnet sind, resultiert eine rasche und einfache Montage der Drossel auf einer Leiterplatte oder dgl. mit einer einfachen elektrischen Kontaktierung der Anschlüsse der Drossel. Die Anschlüsse der vorgefertigten Wicklungen ragen durch diese Öffnungen in der Grundplatte und können rasch und einfach an Kontaktflächen auf einer Leiterplatte angelötet oder über Klemmverbindungen angeschlossen werden.If openings for the connections of the at least one winding are arranged in the base plate, the throttle can be mounted quickly and easily on a circuit board or the like with simple electrical contacting of the connections of the throttle. The connections of the prefabricated windings protrude through these openings in the base plate and can be quickly and easily soldered to contact surfaces on a circuit board or connected via clamp connections.
Ein Teil des Spulenkörpers enthält gemäß einem weiteren Merkmal der Erfindung Elemente zum Aufsetzen der zumindest einen Wicklung. Dadurch kann die zumindest eine vorgefertigte Wicklung rasch an diesen Elementen angeordnet und die Drossel schnell und vor allem werkzeuglos hergestellt werden. Vorzugsweise sind zusätzliche Zentrierelemente vorgesehen, welche die zumindest eine Wicklung entsprechend zentrieren und deren gewünschte Lage festlegen.According to a further feature of the invention, part of the bobbin contains elements for placing the at least one winding. As a result, the at least one prefabricated winding can be quickly arranged on these elements and the choke can be produced quickly and, above all, without tools. Additional centering elements are preferably provided, which center the at least one winding accordingly and determine its desired position.
Gelöst wird die erfindungsgemäße Aufgabe auch durch ein oben genanntes Verfahren zur Herstellung einer Drossel, welches die folgenden Schritte beinhaltet:
- a) Aufsetzen und Zentrieren der zumindest einen Wicklung am ersten Teil des Spulenkörpers;
- b) Werkzeugloses Verbinden des ersten Teils des Spulenkörpers mit dem zweiten Teil des Spulenkörpers;
- c) Einschieben und Stapeln der Bleche des Magnetkerns in den Spulenkörper;
- d) Werkzeugloses Verbinden der Grundplatte mit dem Spulenkörper. Somit kann die Drossel rasch, einfach und werkzeuglos hergestellt werden, ohne dass zusätzliche Befestigungselemente, wie Befestigungsschrauben, Druckplatten oder Luftspaltplatten notwendig sind. Neben dem geringeren Herstellungsaufwand können auch die Materialkosten gesenkt werden. Zu den weiteren Vorteilen wird auf die obige Beschreibung der Drossel verwiesen.
- a) placing and centering the at least one winding on the first part of the bobbin;
- b) connecting the first part of the bobbin to the second part of the bobbin without tools;
- c) inserting and stacking the sheets of the magnetic core into the coil body;
- d) Tool-free connection of the base plate to the bobbin. The throttle can therefore be manufactured quickly, easily and without tools, without the need for additional fastening elements such as fastening screws, pressure plates or air gap plates. In addition to the lower manufacturing effort, material costs can also be reduced. For further advantages, please refer to the above description of the throttle.
Vorteilhafterweise wird vor dem werkzeuglosen Verbinden der Grundplatte mit dem Spulenkörper die Grundplatte mit den Stiften durch die Öffnungen in den Blechen bewegt. Dadurch kann der Magnetkern ohne den Einsatz von Befestigungsschrauben zusammengebaut und in seiner gewünschten Position gehalten werden. Vorteilhafterweise wird das werkzeuglose Verbinden des ersten Teils des Spulenkörpers mit dem zweiten Teil des Spulenkörpers und das werkzeuglose Verbinden der Grundplatte mit dem Spulenkörper durch Einschnappen von Rastnasen in entsprechende Öffnungen an den Teilen des Spulenkörpers und der Grundplatte erledigt.Advantageously, before the base plate is connected to the bobbin without tools, the base plate with the pins is moved through the openings in the sheets. This allows the magnetic core to be assembled and held in its desired position without the use of mounting screws. Advantageously, the tool-free connection of the first part of the bobbin to the second part of the bobbin and the tool-free connection of the base plate to the bobbin are accomplished by snapping locking lugs into corresponding openings on the parts of the bobbin and the base plate.
Wenn die zusammengebaute Drossel in ein Lackbad, insbesondere ein Bad aus wasserbasiertem Lack, getaucht und vorzugsweise bei höherer Temperatur, insbesondere 100°C bis 150°C, getrocknet wird, kann die Drossel isoliert und vor Umwelteinflüssen und Korrosion geschützt werden. Dabei können lösungsmittelbasierte Lacke zur Anwendung kommen. Darüber hinaus kann die zusammengebaute Drossel auch mit Harzen überzogen oder eingegossen werden.If the assembled choke is immersed in a paint bath, especially a bath of water-based paint, and preferably dried at a higher temperature, especially 100°C to 150°C, the choke can be insulated and protected from environmental influences and corrosion. Solvent-based paints can be used. In addition, the assembled choke can also be covered or cast with resins.
Die vorliegende Erfindung wird anhand der beigefügten Zeichnungen, welche eine Ausführungsform der Erfindung zeigen, auf die sie nicht beschränkt sein soll, näher erläutert. Darin zeigen:
- Fig. 1
- eine perspektivische Ansicht auf eine erfindungsgemäß aufgebaute Drossel mit einem E-förmigen Magnetkern; und
- Fig. 2-8
- verschiedene Ansichten auf die Drossel gemäß
Fig. 1 in verschiedenen Herstellungsstadien.
- Fig. 1
- a perspective view of a throttle constructed according to the invention with an E-shaped magnetic core; and
- Fig. 2-8
- different views on the throttle according to
Fig. 1 in different stages of production.
In
Die Grundplatte 11 enthält vorzugsweise Stifte 16, an welchen die Bleche 7 zum Aufbau des Magnetkerns 5 mit entsprechenden Öffnungen 17 übereinander gestapelt werden können.The
Die Stifte können Versteifungsrippen 24 aufweisen (siehe
Die dargestellte Drossel 1 kann sehr einfach und rasch werkzeuglos zusammengebaut bzw. hergestellt werden, ohne dass Befestigungsschrauben, Druckplatten oder Luftspaltplatten erforderlich sind.The
Anhand der
In
Gemäß
Im Herstellungsstadium der Drossel 1 gemäß
Werden gemäß
In
Die vorliegende Erfindung ermöglicht eine rasche und werkzeuglose Herstellung einer Drossel 1 mit zumindest einer Wicklung 2 und einem Magnetkern 5, der durch einen Luftspalt 6 unterbrochen ist, ohne zusätzliche Elemente.The present invention enables rapid and tool-free production of a
Claims (15)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22178352.5A EP4290537A1 (en) | 2022-06-10 | 2022-06-10 | Throttle and method for manufacturing such a throttle |
IL311396A IL311396A (en) | 2022-06-10 | 2023-06-09 | Choke, and method for manufacturing such a choke |
PCT/EP2023/065434 WO2023237708A1 (en) | 2022-06-10 | 2023-06-09 | Choke, and method for manufacturing such a choke |
CN202380013794.2A CN118020120A (en) | 2022-06-10 | 2023-06-09 | Choke and method for producing such a choke |
AU2023284998A AU2023284998B2 (en) | 2022-06-10 | 2023-06-09 | Choke, and method for manufacturing such a choke |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22178352.5A EP4290537A1 (en) | 2022-06-10 | 2022-06-10 | Throttle and method for manufacturing such a throttle |
Publications (1)
Publication Number | Publication Date |
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EP4290537A1 true EP4290537A1 (en) | 2023-12-13 |
Family
ID=82019747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP22178352.5A Pending EP4290537A1 (en) | 2022-06-10 | 2022-06-10 | Throttle and method for manufacturing such a throttle |
Country Status (5)
Country | Link |
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EP (1) | EP4290537A1 (en) |
CN (1) | CN118020120A (en) |
AU (1) | AU2023284998B2 (en) |
IL (1) | IL311396A (en) |
WO (1) | WO2023237708A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030098769A1 (en) * | 2001-11-28 | 2003-05-29 | Delta Electronics, Inc. | Winding structure of transformer |
DE112012002017T5 (en) * | 2011-05-10 | 2014-02-06 | Sumitomo Electric Industries, Ltd. | Reactor, current transformer and power conversion device |
US20140266527A1 (en) * | 2013-03-15 | 2014-09-18 | Ford Global Technologies, Llc | Inductor assembly support structure |
DE202015102905U1 (en) | 2015-06-04 | 2016-09-06 | Manfred Schmelzer Gmbh | Spool for transformers |
WO2018033451A1 (en) | 2016-08-18 | 2018-02-22 | Manfred Schmelzer Gmbh | Multi-phase differential mode power choke |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016209613A1 (en) * | 2016-06-01 | 2017-12-07 | Würth Elektronik eiSos Gmbh & Co. KG | Mounting kit for a throttle and throttle |
-
2022
- 2022-06-10 EP EP22178352.5A patent/EP4290537A1/en active Pending
-
2023
- 2023-06-09 IL IL311396A patent/IL311396A/en unknown
- 2023-06-09 WO PCT/EP2023/065434 patent/WO2023237708A1/en active Application Filing
- 2023-06-09 CN CN202380013794.2A patent/CN118020120A/en active Pending
- 2023-06-09 AU AU2023284998A patent/AU2023284998B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030098769A1 (en) * | 2001-11-28 | 2003-05-29 | Delta Electronics, Inc. | Winding structure of transformer |
DE112012002017T5 (en) * | 2011-05-10 | 2014-02-06 | Sumitomo Electric Industries, Ltd. | Reactor, current transformer and power conversion device |
US20140266527A1 (en) * | 2013-03-15 | 2014-09-18 | Ford Global Technologies, Llc | Inductor assembly support structure |
DE202015102905U1 (en) | 2015-06-04 | 2016-09-06 | Manfred Schmelzer Gmbh | Spool for transformers |
WO2018033451A1 (en) | 2016-08-18 | 2018-02-22 | Manfred Schmelzer Gmbh | Multi-phase differential mode power choke |
Also Published As
Publication number | Publication date |
---|---|
WO2023237708A1 (en) | 2023-12-14 |
AU2023284998B2 (en) | 2024-12-12 |
CN118020120A (en) | 2024-05-10 |
IL311396A (en) | 2024-05-01 |
AU2023284998A1 (en) | 2024-02-29 |
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