EP0121676A1 - Self ou petit transformateur, en particulier ballast inductif pour lampes luminescentes à gaz - Google Patents

Self ou petit transformateur, en particulier ballast inductif pour lampes luminescentes à gaz Download PDF

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Publication number
EP0121676A1
EP0121676A1 EP84101271A EP84101271A EP0121676A1 EP 0121676 A1 EP0121676 A1 EP 0121676A1 EP 84101271 A EP84101271 A EP 84101271A EP 84101271 A EP84101271 A EP 84101271A EP 0121676 A1 EP0121676 A1 EP 0121676A1
Authority
EP
European Patent Office
Prior art keywords
choke
wall
transformer according
insulating
winding
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.)
Granted
Application number
EP84101271A
Other languages
German (de)
English (en)
Other versions
EP0121676B1 (fr
Inventor
Bernhard Albeck
Dieter Hammer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vossloh Schwabe Deutschland GmbH
Original Assignee
SCHWABE GmbH and CO KG ELEKTROTECHNISCHE FABRIK
Schwabe & Co KG Elektrotechnische Fabrik GmbH
SCHWABE KG ELEKTROTECH FAB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SCHWABE GmbH and CO KG ELEKTROTECHNISCHE FABRIK, Schwabe & Co KG Elektrotechnische Fabrik GmbH, SCHWABE KG ELEKTROTECH FAB filed Critical SCHWABE GmbH and CO KG ELEKTROTECHNISCHE FABRIK
Priority to AT84101271T priority Critical patent/ATE22193T1/de
Publication of EP0121676A1 publication Critical patent/EP0121676A1/fr
Application granted granted Critical
Publication of EP0121676B1 publication Critical patent/EP0121676B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • 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
    • H01F27/326—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures specifically adapted for discharge lamp ballasts
    • 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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H01F27/402—Association of measuring or protective means

Definitions

  • the invention relates to a choke or a transformer, in particular as a ballast for gas discharge lamps, with a laminated core consisting of a core and a jacket, composed of sheet metal laminations, and with a winding placed on the core and insulated from it and the jacket, on the winding heads of each Independent molded insulating parts are placed laterally, which have a tongue inserted into the space between the core and the respective winding head and an outer wall lying in front of the winding head, openings limited by the outer wall and the adjacent end wall of the laminated core, possibly completely or, connected to the laminated core are partially covered by a mounting rail and / or covered by side walls of the molded insulating parts.
  • the molded insulating parts pushed onto the winding heads of the winding formed in the form of an insulated coil are designed as one-piece insulating material housings which bear against the laminated core and which are in contact with the adjacent one End wall of the laminated core delimit a lower opening, which is covered by a mounting rail connected to the laminated core.
  • These insulating material housings result in a significant simplification of the insulation of the winding because, after winding the coil, they are simply plugged onto the coil insulated in the area of their legs by means of a film sheathing, the wire ends of the coil being connected to connection devices provided on the insulating material housings before the whole is placed on the core.
  • the object of the invention is therefore to provide a choke or a transformer of the type mentioned, in which or in the case of a winding consisting of several coils, a perfect insulation of the winding heads of the individual coils from each other is ensured without this in the context of Mass production would increase the manufacturing time of the choke or the transformer, while at the same time a perfect insulation of the winding overhangs is also guaranteed to the outside.
  • the arrangement of the choke or the transformer according to the invention is such that, in the case of a winding consisting of at least two coils, the molded insulating parts each have at least one partition wall projecting between the winding heads of two adjacent coils and isolating them from one another.
  • the partition wall of the molded insulating parts ensures that when the molded insulating parts are plugged in, the winding heads of the individual coils are insulated against one another at the same time. It does not need its own inserts in the form of press strips or the like between the winding heads. to be inserted, which would have to be done as part of additional operations that would increase manufacturing time.
  • the tongue and the outer wall of the molded insulating parts ensure perfect insulation both against the core of the laminated core and also towards the outside, with gaps remaining between the outer wall and the laminated core through the mounting rail or other parts already connected to the laminated core, for example a sheet metal jacket, can be covered.
  • the partition wall can be arranged in the area between the tongue and the outer wall running approximately parallel to the tongue, the two coils assigned to it being inserted one into the other. This results in a very space-saving arrangement of the coils which is also advantageous in terms of production and insulation technology.
  • the molded insulating part can be in one piece, the intermediate wall being formed on an upper wall part connecting the tongue to the outer wall.
  • the intermediate wall, the winding overhang of the internal coil with two legs laterally encompassing is designed with an approximately U-shaped cross-sectional shape.
  • the insulating part can be formed in a cap-like manner with side walls molded onto the outer wall, which counteract the adjacent end wall of the laminated core is supported.
  • openings without openings formed on the outer wall of the insulating molded part between the outer wall and the adjacent end wall of the laminated core, which are then covered by parts firmly connected to the laminated core, can remain free that the end winding is also insulated so that it is safe to touch from the side
  • a separate separate opening can be provided for each wire end of each coil. If the molded insulating part is provided with a partition wall with a U-shaped cross section, then Adjacent, optionally edge-open openings can each be separated by a web formed by one of the legs of the associated U-shaped profiled partition.
  • the embodiments of the molded insulating parts described above are generally in one piece.
  • multi-piece insulation elements can also be used with advantage for the end windings.
  • a covering cap made of insulating material and at least partially encompassing the insulating material part can be pushed onto the described insulating material part, which, for example, provides the lateral covering of the end windings.
  • the cover cap has connection devices for the wire ends of the coils and insulated channels for the individual wire ends of the coils are formed between at least one wall of the molded insulating part and an associated wall of the cover cap leading to the connection devices.
  • the channels can advantageously between the outer wall of the molded insulating part and a arranged at a distance from the front wall of the cover cap and separated from one another by webs formed on the outer and / or front wall.
  • the channels are also conceivable in which the channels are provided between mutually assigned and adjacent side walls of the molded insulating part and the cover cap.
  • the coils of the winding are arranged one above the other but rather one above the other.
  • the arrangement can be such that on each side of the laminated core each coil is assigned its own molded insulating part and that the isolating molded parts of the individual coils are connected to each other on each side of the laminated core to form the partition. This results in particularly simple conditions if the mutually associated molded insulating parts are plugged into one another and the partition is formed by an upper transverse wall of the inserted molded plastic part.
  • the assembly of the winding head insulation is particularly simple because only the individual molded insulating parts are successively plugged onto the winding heads of the coils lying one above the other and then plugged into one another.
  • Each of the molded insulating parts can have its own tongue and thus the insulation of the assigned winding head against the core. Basically, however, embodiments are also conceivable in which, for example, only the outermost insulating molded part has a tongue which insulates all the winding heads of the coils lying one above the other from the core.
  • the interlocking molded insulating parts have mutually associated guide parts that hold the molded parts together in the correct position.
  • each insulating molded part has its own connection devices, which means that the individual coils of the winding can each be provided with their own winding head insulation and connected with their wire ends to the associated connection devices.
  • the pre-made coils are then simply placed on top of each other, with the molded insulating parts their winding head insulation are inserted into each other in the manner already described. Then the whole thing is applied to the core of the sheet metal package. Additional developments of the choke or the transformer are the subject of further subclaims.
  • a symmetrical series choke is shown, the winding of which consists of two separate coils 1, 2, which have a substantially rectangular shape in the manner shown in FIG. 1 and which are nested in the manner shown in the two figures are arranged.
  • the two coils 1, 2 are mutually isolated also in the areas of their coil sides at 3, 4 each individually with a pronounce.weiter shown insulating film wrapped and p lation through this Nutenis both against the schematically indicated at 5 laminated core.
  • the laminated core 5 is composed of individual laminations and consists of a T-shaped core 6 and a U-shaped jacket 7 assigned to it.
  • other laminated cuts for example an E / I cut, are also conceivable.
  • Independent insulating material molded parts 8 are placed laterally on each of the winding heads 1 a, 2 a of the two coils 1, 2 that protrude from the end of the sheet stack 5, which are formed in the form of a cap in the embodiment shown.
  • Each insulating material molded part 8 has a tongue 9 inserted between the core 6 and the inner winding head 2a and an outer wall 10 lying in front of the outer winding head 1a, the tongue 9 and the outer wall 10 being connected to one another by an upper wall 11 to which two side walls 12 are connected, which are supported at 13 with a strip-like widening against the adjacent end wall of the laminated core 5.
  • the side walls 12 with the strip-like widenings 13 can also be omitted, which also applies to the upper wall 11 except for a web connecting the tongue 9 to the outer wall 10.
  • the tongue 9, the wall thickness of which is generally greater than that of the outer wall 10, as shown, can be of solid construction or divided into individual fingers lying next to one another. It is only essential that the tongue keeps the winding head 2a at a distance from the end wall of the laminated core 5.
  • the winding heads 1a, 2a are covered laterally by the side walls 12 and the upper wall 11. These walls can be extended downwards in the manner indicated by dashed lines in FIG. 2 to a mounting rail 14 which closes the lower opening 15 delimited by the outer wall 10, the side walls 12 and the end face of the laminated core 5.
  • this lower opening 15 can remain open or in which the lateral covering - with the omission of the side walls 12 and possibly the upper wall 11, is carried out, for example, by means of an advanced sheet metal jacket connected to the laminated core 5.
  • the molded insulating material part has a partition 16, which projects between the winding heads 1a, 2a of the adjacent coils 1, 2 and which is molded onto the upper wall 11 and approximately parallel to the tongue 9 and the outer wall 10 runs.
  • the partition 16 is, around the winding head 2a of the inner coil 2 with two legs 17, formed with an approximately U-shaped cross-sectional shape, so that the winding head insulation extends into the area of the straight coil sides 3, 4 and flawlessly adheres to the slot insulation there the coil sides connects.
  • the insulating molded part 8 has on its upper side in the region of the upper wall 11 at right angles to the outer wall 10 groove-like recesses 18 into which metallic connecting lugs 19 are inserted, each provided with a connecting eye 20 for a wire end of one of the two coils 1, 2 are.
  • These wire ends are guided through openings 22 provided in the region of the upper wall 11 of the molded insulating part 8, the arrangement being such that for each wire end 21 each of the two coils 1, 2 each has its own separate opening 22.
  • the edge-open openings 22 are separated from one another in the manner shown in FIG. 1 by a web formed by one of the legs 17 of the U-shaped profiled partition 16.
  • the winding head insulation explained is in one piece on both sides of the laminated core 5.
  • a cover cap 24 made of insulating material is pushed onto the molded insulating part 8 on both coil sides and has a substantially box-like shape with a front wall 25, two side walls 26 and an upper cover wall 27.
  • Guide strips 28 are formed on the side walls 26, which engage behind the molded insulating part 8, as can be seen from FIG. 3.
  • Parallel channels 29 are formed between the outer wall 10 of the molded plastic part 8 and the adjacent front wall 27 of the covering cap 24, which channels are separated from one another by webs 30 formed on the outer wall 10. Run in channels 29 the wire ends 21 of the two coils 1, 2, so that they are properly insulated from one another and from the winding heads 1a, 2a when the cover cap 24 is pushed on.
  • the channels 29 lead to connection devices 32 for the wire ends 21 provided on the front wall 27 of the cap 26.
  • the connection devices 32 each consist of tubes 33 formed on the front wall 27 and slotted at the bottom, to the slot of which an open-edge insertion slot 34 connects and which is not Metallic crimp sleeves shown further can be placed, with which the wire ends 21 inserted into the tubes 33 can be crimped to produce a perfect electrical connection.
  • the two coils 1, 2, the coil sides 3, 4 of which are in turn provided with the conventional groove insulation consisting of an insulating film which surrounds them, are arranged one above the other, so that both of them Exit winding heads in the manner shown in FIG. 6 one above the other from the end face of the laminated core 5.
  • the insulation of the winding heads 1 a, 2 a is designed in this case in such a way that a separate insulating molded part 8 a, 8 b is plugged onto each winding body p f 1 a, 2 a on each side of the laminated core 5.
  • Each molded plastic part 8a, 8b has its own tongue 9a, 9b and an outer wall 10a, 10b running parallel thereto, which is connected to the tongue 9a or 9b by an upper wall 11a or 11b.
  • side walls 12a, 12b are integrally formed on the outer wall 10a or 10b of the two molded insulating parts 8a, 8b, but embodiments are also conceivable in which these side walls 12a,
  • the two molded insulating parts 8a, 8b are connected to one another by being inserted into one another in the manner shown in the figures, the upper wall 11b of the inserted molded plastic part 8b forming the partition between the two winding heads 1a, 2a.
  • the outer wall 10a of the outer molded insulating part 8a has a rectangular, edge-open recess 40, into which the outer wall 10b of the inner molded plastic part 8b is inserted with a raised part (FIG. 5), the connecting devices 32 in the form of the slotted tubes 33 and the insertion slots 34 for the wire ends of the associated coil 2.
  • Corresponding connection devices 32 for the connection wire ends of the coil 1 assigned to the outer molded part 8a are provided adjacent to the outer wall 10a of the molded part 8a.
  • each insulating material part 8a, 8b can be placed on the associated coil 2 or 1 for itself, whereupon the coil is preassembled by connecting its wire ends to the associated connection devices 32.
  • the coils thus pre-assembled are then placed one on top of the other in such a way that their Insulated-molded parts 8b are inserted into the molded-molded parts 8a of the adjacent coil, the molded-molded parts 8a, 8b being held against one another in the correct position by guide parts indicated at 41, so that the The whole forms a solid unit, which can then be applied to the core as a whole.
  • FIGS. 7 to 9 essentially corresponds to that according to FIGS. 5, 6.
  • the same parts are therefore provided with the same reference numerals, so that a further explanation is unnecessary.
  • the inner molded insulating part 8b has a tongue 9c which is molded onto its upper wall 11b (FIG. 7) and is rectangular in cross section, which extends on both sides of the upper wall 11b and is designed in the form of a profile tube which is open on both sides and whose cavity is indicated at 50.
  • the plugged-on outer molded insulating part 8a is provided with a guide element in the form of a profile pin 51, which is integrally formed on its upper wall 11a at the rear and whose outer dimensions correspond to the inner dimensions of the tubular tongue 9c. In the assembled state, the profile pin 51 protrudes into the hollow tongue 9c in the manner shown in FIG. 7, so that the two molded insulating parts 8a, 8b are properly guided against one another.
  • the inner insulating molded part 8b - in relation to FIG. 7 in the vertical direction - is somewhat shorter than the interior of the outer insulating molded part 8a, so that it can be displaced to a limited extent in the outer insulating molded part 8a.
  • the guidance between the two molded insulating parts 8a, 8b is always maintained.
  • This displaceability of the inner insulating molded part 8b in relation to the outer molded insulating part 8a it is also possible to use the same molded insulating parts to perfectly insulate the winding heads of different sizes on top of one another.
  • parallel channels 29 are formed between the outer wall 10a of the outer molded insulating part 8a and the outer wall 10b of the inner molded plastic part 8b, which are insulated from one another by webs 30 molded onto the outer wall 10b.
  • the connecting wires for the wire ends of the two coils 1a, 2a run to connection devices 32 in the form of slotted tubes 33, to which insertion slots 34 (FIG. 8) for the wire ends of the coils 1a, 2a are assigned.
  • a cover cap 24a which is also made of insulating material, is pushed onto the outer molded insulating part 8a, leaving the tubes 33 free in the region of its front wall 27a and carrying a rectangular, substantially L-shaped molded nose 53 which is designed in the manner of a groove.
  • the nose 53 engages over a clamping element 54 arranged on the mounting rail 14, which is designed, for example, as a luster terminal and is fixed by it on the mounting rail 14.
  • the cover cap 24a is over claws 55, from one of which is shown in FIG. 7, and which engage in corresponding recesses on the upper wall 11a of the outer molded insulating part 8a, is latched to the outer molded insulating part 8a.
  • a space 55 is left between adjacent walls of the outer molded insulating part 8a and the cover cap 24a, which is connected to two continuous cylindrical bores 56 formed in the profile pin 51. These bores 56 and the space 55 allow the electrical leads 57 to be one at 58 indicated and accommodated in the cavity 50 of the tongue 9c temperature-sensitive element 58 protected on all sides to the clamping element 54 or another suitable connection device to the outside.
  • the temperature-sensitive element 58 can be a micro-fuse or a micro-switch which responds when a certain maximum winding temperature is exceeded.
  • the cover cap 24a can also have additional spacing or guiding devices which cooperate with corresponding parts of the outer molded insulating part 8a in order to ensure that the two parts are assigned correctly in the correct position.
  • the outer molded insulating part 8a is provided with guide strips 28 in the region of its side walls, 3, which form a channel-like guide for the side walls of the inserted inner insulating molded part 8b, as can be seen, for example, from FIG. 8.
  • the devices described can also be designed as small transformers. Embodiments are also conceivable in which there are more than two coils, adjacent coils in each case being insulated from one another in the manner described by a partition in the region of the winding heads.
  • the cavity 50 receiving the temperature-sensitive element 58 is laterally enclosed by the walls of the tubular tongue 9c.
  • this cavity 50 is groove-like, i.e. is open on one side, so that the temperature-sensitive element 58 accommodated in this cavity rests directly on the laminated core 5.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP84101271A 1983-03-15 1984-02-08 Self ou petit transformateur, en particulier ballast inductif pour lampes luminescentes à gaz Expired EP0121676B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84101271T ATE22193T1 (de) 1983-03-15 1984-02-08 Drossel oder transformator, insbesondere als vorschaltgeraet fuer gasentladungslampen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3309110 1983-03-15
DE3309110A DE3309110C2 (de) 1983-03-15 1983-03-15 Drossel oder Transformator, insbesondere als Vorschaltgerät für Gasentladungslampen

Publications (2)

Publication Number Publication Date
EP0121676A1 true EP0121676A1 (fr) 1984-10-17
EP0121676B1 EP0121676B1 (fr) 1986-09-10

Family

ID=6193441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101271A Expired EP0121676B1 (fr) 1983-03-15 1984-02-08 Self ou petit transformateur, en particulier ballast inductif pour lampes luminescentes à gaz

Country Status (4)

Country Link
EP (1) EP0121676B1 (fr)
AT (1) ATE22193T1 (fr)
DE (1) DE3309110C2 (fr)
FI (1) FI77541C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562495A2 (fr) 1992-03-26 1993-09-29 Knobel Ag Lichttechnische Komponenten Transformateur ou inductance comprenant des pièces profilées de matériau isolant aux têtes de bobines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915355A1 (de) * 1999-04-06 2000-10-26 Vossloh Schwabe Gmbh Elektrische Verbindungs- oder Anschlußklemme

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027279A (en) * 1975-07-21 1977-05-31 Katsumi Shigehara Device for attaching leads to a transformer or the like
DE2244158C3 (de) * 1972-09-08 1979-09-06 Fa. Hermann Schwabe, 7067 Urbach Drossel oder Transformator, insbesondere als Vorschaltgerät für Gasentladungslampen
DE2916639A1 (de) * 1979-04-25 1980-10-30 Hofsass P Spulenkoerper mit waermeschutzschalter
DE2950789A1 (de) * 1979-12-17 1981-06-25 May & Christe Gmbh, Transformatorenwerke, 6370 Oberursel Vorschaltgeraet fuer leuchtstofflampen
EP0041288A1 (fr) * 1980-05-30 1981-12-09 Philips Electronics Uk Limited Composants électriques enroulés

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2161635C3 (de) * 1971-12-11 1974-11-21 Fa. Hermann Schwabe, 7067 Urbach Drossel oder Transformator, insbesondere als Vorschaltgerät für Gasentladungslampen
NL7611328A (nl) * 1976-10-14 1978-04-18 Philips Nv Induktieve stabilisatieballast voor een ont- ladingslamp.
DE2850190A1 (de) * 1978-11-18 1980-05-29 Licentia Gmbh Hochspannungsfester uebertrager

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2244158C3 (de) * 1972-09-08 1979-09-06 Fa. Hermann Schwabe, 7067 Urbach Drossel oder Transformator, insbesondere als Vorschaltgerät für Gasentladungslampen
US4027279A (en) * 1975-07-21 1977-05-31 Katsumi Shigehara Device for attaching leads to a transformer or the like
DE2916639A1 (de) * 1979-04-25 1980-10-30 Hofsass P Spulenkoerper mit waermeschutzschalter
DE2950789A1 (de) * 1979-12-17 1981-06-25 May & Christe Gmbh, Transformatorenwerke, 6370 Oberursel Vorschaltgeraet fuer leuchtstofflampen
EP0041288A1 (fr) * 1980-05-30 1981-12-09 Philips Electronics Uk Limited Composants électriques enroulés

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0562495A2 (fr) 1992-03-26 1993-09-29 Knobel Ag Lichttechnische Komponenten Transformateur ou inductance comprenant des pièces profilées de matériau isolant aux têtes de bobines
EP0562495A3 (en) * 1992-03-26 1993-11-03 Knobel Lichttech Transformer or inductor with shaped pieces of insulating material at the coil end turns

Also Published As

Publication number Publication date
FI840962A0 (fi) 1984-03-09
FI77541B (fi) 1988-11-30
DE3309110A1 (de) 1984-09-27
FI77541C (fi) 1989-03-10
EP0121676B1 (fr) 1986-09-10
DE3309110C2 (de) 1985-03-21
ATE22193T1 (de) 1986-09-15
FI840962A (fi) 1984-09-16

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