EP0217103A1 - Transformateur à encapsulage isolant coulé - Google Patents
Transformateur à encapsulage isolant coulé Download PDFInfo
- Publication number
- EP0217103A1 EP0217103A1 EP86111589A EP86111589A EP0217103A1 EP 0217103 A1 EP0217103 A1 EP 0217103A1 EP 86111589 A EP86111589 A EP 86111589A EP 86111589 A EP86111589 A EP 86111589A EP 0217103 A1 EP0217103 A1 EP 0217103A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- winding
- connection rubber
- iron core
- connection
- 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
Links
Images
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
- H01F27/02—Casings
- H01F27/022—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/005—Impregnating or encapsulating
Definitions
- the invention relates to a transformer with a cast insulating jacket, in particular for underfloor airfield lighting, and a method for its production.
- Such transformers are recessed into the runways of airfields with the connected headlights and, in addition to a small installation space, must have complete tightness and resistance to alkalis, acids and sea water, in particular to ensure operational safety.
- a high-voltage-resistant, insulating-coated transformer in particular for use in underfloor airport lighting systems, is to be created which, despite simple manufacture and only a small size, can ensure the tightness and required resistance to sea water and alkalis and acids.
- the transformer according to the invention without additional separate buffering of the active part, with its only directly injection-molded elastic sheathing of the winding applied to a coil former spacing the iron core on all sides and the injection of the space between the iron core and coil former, which is ensured in a simple manner by the spacer webs requirements for tightness and resistance to soil, sea water as well as alkalis and acids can be met even if the inner active part heats up;
- the penetration of moisture along the outward connection means for the outer connection line is now also clearly prevented by the fact that the connection rubber bushings which are pre-fixed on the coil former and already co-injected during the production of the sheathing during cooling of the insulating sheath in the sense of a press connection with a high sealing pressure of the injection molding compound are enclosed.
- connection rubber bushings for holding the part to be overmolded at least consisting of core, bobbin with primary or secondary winding and pre-fixed connection means existing connection part for holding in the injection mold until the overmolded insulation cools mass shared.
- injection is preferably carried out in the direction of the coil axis.
- the coil former 2 used in the transformer according to the invention is shown in FIGS. 1 to 3.
- the winding space for the primary winding 7 is located between the right end flange 21 and the opposite central flange 23, and the winding space for the secondary winding 8 is located between the left end flange 22 and the opposite central flange 24.
- At the top of the coil former 2 are 21 on the right end flange 21 two brackets 25, 26 for the pre-fixed mounting of connection rubber bushings 3, 4 for the primary winding 7 and on the upper side of the left end flange 22 a mounting bracket 27 for the pre-fixed mounting of a connection rubber bushing 5 for the secondary winding 8 is also molded.
- Fig. 4 shows a single connection rubber bushing 4, which receives in its center a connection means for the respective winding end and an outer connection line and has a pin 41 cast into the side of this connection means, with which the connection rubber bushing 4 connects to the in 3 shown mounts can be inserted and thereby pre-fixable.
- a plug-in sleeve 10 is inserted as a connection means into the connection rubber bush.
- One winding end of the primary or secondary winding 7 or 8 is inserted and soldered or crimped into the lower sleeve part protruding from the connecting rubber bushing; a plug connected to the stripped part of an outer connecting line is inserted into the upper sleeve part, the stripped part of the outer connecting line being pressed directly or indirectly into the recess 42 of the connecting rubber bushing.
- 11 is a second embodiment of an advantageously sealed connection vulcanized into the connecting rubber bushing 4 as a prefabricated connecting component, the inner stripped end 92 of which is stripped and protrudes from the connecting rubber bushing and is connected to one winding end of the primary and secondary winding 7; 8.
- connection rubber bushings 3 The assembly of the entire bobbin 2 with all pre-fixed connection rubber bushings can be seen in Figures 5,6 and 9.
- the high-voltage primary winding has two separate connection rubber bushings 3, 4, each with a connection means 71 and 72, respectively, for connecting an outer line to the primary winding 7; in the single rubber socket 5 for the secondary winding 8, both connection means 81, 82 for the outer line or the winding ends of the secondary winding 8 are combined.
- FIGS. 7, 8 show the wound and equipped active part of the transformer according to FIG. 5 or FIG. 6 after the molded insulating jacket; 10 shows the view of the active part of the transformer according to FIG. 9 after its injection-molded casing.
- spacer webs 28 are attached to the inner surfaces of the rectangular coil core of the coil body 2, which comprises the inserted iron core, such that the transformer iron core 1 is kept at a distance from the coil body 2 in accordance with the height of the distance webs 28 the resulting space between the transformer iron core 1 and the coil body 2 and thus the primary winding 7 and secondary winding 8 can also be completely filled with the injection-molded insulating material made of elastic thermoplastic.
- the spacer webs 28 abut one another outside the corners the inner surfaces of the right-angled coil core of the coil body 2 are arranged so that the core corners, at which particularly high field strengths occur, have reliable insulation from the surrounding primary or secondary winding.
- an earthing strap 6, which protrudes from the injection-molded insulating jacket can additionally be welded onto the outside of the laminated core, for example.
- the wound and equipped active part to be overmolded is advantageously set up in the injection mold by means of its connecting rubber bushings 3-5, so that no further additional external spacing means are necessary which could give rise to dangerous inhomogeneous zones in the insulating sheathing .
- the injection molding compound filled in under high pressure is preferably injected in the direction of the coil axis, so that the transformer is held in the injection mold in the centered position and thus sufficient insulation sheathing guaranteed on all sides.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
- Insulating Bodies (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86111589T ATE43454T1 (de) | 1985-09-03 | 1986-08-21 | Transformator mit gegossener isolierummantelung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3531445 | 1985-09-03 | ||
DE3531445 | 1985-09-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0217103A1 true EP0217103A1 (fr) | 1987-04-08 |
EP0217103B1 EP0217103B1 (fr) | 1989-05-24 |
Family
ID=6280041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86111589A Expired EP0217103B1 (fr) | 1985-09-03 | 1986-08-21 | Transformateur à encapsulage isolant coulé |
Country Status (7)
Country | Link |
---|---|
US (1) | US4763095A (fr) |
EP (1) | EP0217103B1 (fr) |
JP (1) | JPS6255914A (fr) |
AT (1) | ATE43454T1 (fr) |
DE (1) | DE3663601D1 (fr) |
DK (1) | DK415186A (fr) |
FI (1) | FI862409A (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5056214A (en) * | 1989-12-19 | 1991-10-15 | Mark Iv Industries, Inc | Method of making a molded transformer enclosure |
US5589808A (en) * | 1993-07-28 | 1996-12-31 | Cooper Industries, Inc. | Encapsulated transformer |
US5528091A (en) * | 1994-05-16 | 1996-06-18 | Xolox Corporation | Swing-type actuator and device for locating terminal pins relative to coil for same |
DE19613127A1 (de) * | 1996-04-02 | 1997-10-09 | Sel Alcatel Ag | Spulenkörper für die Ständerwicklung eines Elektrokleinmotors und mit diesem hergestellter Elektrokleinmotor |
US5853643A (en) * | 1996-07-19 | 1998-12-29 | Bauer; Scott V. | Method for constructing a liquid-impervious electric motor assembly |
MY120386A (en) * | 1999-07-28 | 2005-10-31 | Samsung Electronics Co Ltd | High voltage transformer for microware oven and method of manufacturing therefor. |
EP2426679A1 (fr) * | 2010-09-03 | 2012-03-07 | RS Isolsec, S.L. | Transformateur de tension/courant avec boitier intégral en résine moulée et sa méthode de fabrication |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2725539A (en) * | 1954-05-21 | 1955-11-29 | Elastic Stop Nut Corp | Transformers |
FR1525962A (fr) * | 1967-01-26 | 1968-05-24 | Augier Sa | Transformateur pour l'éclairage public |
US4019167A (en) * | 1975-05-19 | 1977-04-19 | Amerace Corporation | Encapsulated transformer |
GB2089764A (en) * | 1980-11-25 | 1982-06-30 | Legrand Sa | Coil former for transformer |
FR2529376A1 (fr) * | 1982-06-28 | 1983-12-30 | Siemens Ag | Petit transformateur |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3525966A (en) * | 1968-07-24 | 1970-08-25 | Square D Co | Encapsulated coil and method of making same and spacer for use during encapsulation |
DE7309528U (de) * | 1973-03-13 | 1973-06-07 | Siemens Ag | Spule insbesondere erregerspule fuer laugenpumpen |
US3909759A (en) * | 1974-04-08 | 1975-09-30 | Gen Electric | Bushing well for instrument transformer and transformers including such well |
US3959760A (en) * | 1974-04-08 | 1976-05-25 | General Electric Company | Dry type instrument transformer with potential tap and connector therefor |
US4161776A (en) * | 1977-07-13 | 1979-07-17 | Denki Onkyo Co., Ltd. | Flyback transformer with high tension connector |
JPS608412Y2 (ja) * | 1980-03-12 | 1985-03-25 | 三洋電機株式会社 | フライバツクトランス |
NL8105830A (nl) * | 1981-12-24 | 1983-07-18 | Philips Nv | Werkwijze voor het met een isolerende laag bedekken van een induktieve stabilisatieballast, alsmede induktieve stabilisatieballast die volgens die werkwijze met een isolerende laag bedekt is. |
-
1986
- 1986-06-05 FI FI862409A patent/FI862409A/fi not_active Application Discontinuation
- 1986-08-08 US US06/894,781 patent/US4763095A/en not_active Expired - Fee Related
- 1986-08-21 AT AT86111589T patent/ATE43454T1/de not_active IP Right Cessation
- 1986-08-21 EP EP86111589A patent/EP0217103B1/fr not_active Expired
- 1986-08-21 DE DE8686111589T patent/DE3663601D1/de not_active Expired
- 1986-08-27 JP JP61201194A patent/JPS6255914A/ja active Pending
- 1986-09-01 DK DK415186A patent/DK415186A/da not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2725539A (en) * | 1954-05-21 | 1955-11-29 | Elastic Stop Nut Corp | Transformers |
FR1525962A (fr) * | 1967-01-26 | 1968-05-24 | Augier Sa | Transformateur pour l'éclairage public |
US4019167A (en) * | 1975-05-19 | 1977-04-19 | Amerace Corporation | Encapsulated transformer |
GB2089764A (en) * | 1980-11-25 | 1982-06-30 | Legrand Sa | Coil former for transformer |
FR2529376A1 (fr) * | 1982-06-28 | 1983-12-30 | Siemens Ag | Petit transformateur |
Also Published As
Publication number | Publication date |
---|---|
DK415186D0 (da) | 1986-09-01 |
JPS6255914A (ja) | 1987-03-11 |
DE3663601D1 (en) | 1989-06-29 |
FI862409A (fi) | 1987-03-04 |
DK415186A (da) | 1987-03-04 |
US4763095A (en) | 1988-08-09 |
ATE43454T1 (de) | 1989-06-15 |
FI862409A0 (fi) | 1986-06-05 |
EP0217103B1 (fr) | 1989-05-24 |
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