EP0324084A2 - High-voltage transformer for television sets - Google Patents
High-voltage transformer for television sets Download PDFInfo
- Publication number
- EP0324084A2 EP0324084A2 EP88119532A EP88119532A EP0324084A2 EP 0324084 A2 EP0324084 A2 EP 0324084A2 EP 88119532 A EP88119532 A EP 88119532A EP 88119532 A EP88119532 A EP 88119532A EP 0324084 A2 EP0324084 A2 EP 0324084A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage transformer
- extension
- voltage
- sleeve
- cable
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/42—Flyback transformers
-
- 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
- H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications
Definitions
- High-voltage transformer for television sets consisting of at least one primary and at least one secondary winding, which are arranged in an insulating housing, and at least one connecting cable which is in electrical contact with a connection of the secondary winding.
- Such a high-voltage transformer is known (EP-B-66804).
- the cable ends which are electrically conductively connected to the corresponding connections of the secondary winding for example the high-voltage cable and the cable for the focusing voltage, are firmly connected, for example soldered, to these connections.
- the invention is therefore based on the technical problem of creating a high-voltage transformer for televisions, to which the connecting cables for the high direct voltages are detachable but nevertheless fastened in a manner that ensures good contact with the connections inside the high-voltage transformer and the one if possible has low overall height.
- the insulating housing has an integrally molded tubular extension with an integrally molded eyelet, that one can be plugged onto the extension and has one piece at its lower end molded resilient, provided with the eyelet cooperating sleeve is provided on which is integrally formed a plunger into the space provided for receiving the high-voltage cable extension.
- the primary winding 2 and the secondary windings of the high-voltage transformer are arranged in the insulating material housing 1.
- the secondary windings are accommodated in chambers of the coil former 3, and diodes 4 are arranged between the secondary windings accommodated in the chambers.
- the pin 5 is the high voltage connection.
- the tip of the connecting pin 5 ends in a plug 6 made of conductive rubber, which is arranged at the lowest point of the tubular extension 7.
- the core 8 of the high-voltage cable 9 is also immersed in the plug 6.
- connection cable 10 to the high-voltage transformer and arranged in the recess 20 of the insulating housing 1; this connection cable can be, for example, the cable with which the focusing voltage is led from the high-voltage transformer to the television chassis.
- the electrically conductive connection is established in that the corresponding tap on the secondary development is guided with the connecting pin 11 in the plug 12 made of conductive rubber, in which the core 13 of the connecting cable 10 is also immersed.
- the extension 7 of the insulating material housing 1 has - at least in the upper part - an inside diameter that decreases from top to bottom.
- a radially inwardly directed clamping lug 14 is integrally formed on the inner wall of the extension 7. Since these components of the high-voltage transformer will generally be plastic injection-molded parts, the integrally molded parts have already been produced during the production of the plastic injection-molded parts.
- the eyelet 15 On the outside of the extension 7, the eyelet 15 has also been integrally formed.
- the sleeve 16 has a tab 17 which extends into the interior of the extension 7.
- the hook 18 is integrally formed on the lower end of the sleeve 16 and engages behind the eyelet 15.
- the sleeve 16 is provided with the integrally molded bracket 19.
- the high-voltage cable 9 is installed in the following way: After the sleeve 16 has been plugged onto the end of the high-voltage cable 9, on which the core 8 has been exposed, this end of the high-voltage cable is pushed into the extension 7 up to the plug 6. The sleeve 16 is then pushed onto the extension 7. The tab 17 is pushed between the inner surface of the extension 7 and the surface of the high-voltage cable 9. As a result, the end of the high-voltage cable 9 is clamped on the one hand in the extension 7 and, on the other hand, the clamping lug 14 penetrates into the insulation of the high-voltage cable 9. This creates a form-fitting attachment of the high-voltage cable. The position of the sleeve 16 is secured in that the hook 18 is locked behind the eyelet 15.
- the contact is made with the connecting cable 10 in the recess 20 with the same means as with the high-voltage cable 9.
- the strain relief of the connecting cable 10 takes place in that it is clamped on the clamp 19.
- the solution according to the invention brings about an improvement in several respects. It simplifies the assembly of the connection cables. Pushing the cable ends into the intended location is possible without hindrance. Only one component is required to fasten two or more cables. With the new high-voltage transformer, the required safety values can be maintained even with a lower overall height.
- the required insulation length for the high-voltage connection of the new high-voltage transformer is set by the length of the sleeve 16.
- the sleeve 16 is only assembled during the final assembly of the television set, the new high-voltage transformer has a lower overall height in the manufacture of the television set chassis than in the final state, which makes handling the television chassis easier.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Details Of Television Scanning (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Hochspannungstransformator für Fernsehgeräte, bestehend aus wenigstens einer Primär- und wenigstens einer Sekundärwicklung, welche in einem Isolierstoffgehäuse angeordnet sind, und wenigstens einem mit einem Anschluß der Sekundärwicklung in elektrischen Kontakt stehenden Anschlußkabel.High-voltage transformer for television sets, consisting of at least one primary and at least one secondary winding, which are arranged in an insulating housing, and at least one connecting cable which is in electrical contact with a connection of the secondary winding.
Ein solcher Hochspannungstransformator ist bekannt (EP-B-66804). Bei dem bekannten Hochspannungstransformator sind die mit den entsprechenden Anschlüssen der Sekundärwicklung elektrisch leitend verbundenen Kabelenden, beispielsweise das Hochspannungskabel und das Kabel für die Fokussierspannung, fest mit diesen Anschlüssen verbunden, beispielsweise verlötet.Such a high-voltage transformer is known (EP-B-66804). In the known high-voltage transformer, the cable ends which are electrically conductively connected to the corresponding connections of the secondary winding, for example the high-voltage cable and the cable for the focusing voltage, are firmly connected, for example soldered, to these connections.
Das ist aus fertigungstechnischen Gründen vielfach unerwünscht. Bei der Fabrikation von Fernsehgeräten werden neuerdings, teilweise sogar auf weitgehend automatisch arbeitenden Fertigungsstraßen, den gleichen Aufbau aufweisende Fernsehgerätechassis für mit verschiedenen Bildröhren ausgerüstete Fernsehgeräte hergestellt. Auf diesen Fernsehgerätechassis sind auch bereits die Hochspannungstransformatoren montiert. Da diese Fernsehgerätechassis verschiedene Fertigungsstufen durchlaufen, beispielsweise auch über ein Lötbad geführt werden, sind mit dem Hochspannungstransformator fest verbundene Kabel unerwünscht, weil sie Störungen bei der Fertigung der Fernsehgerätechassis verursachen können.This is often undesirable for manufacturing reasons. In the manufacture of television sets, television set chassis for television sets equipped with different picture tubes have recently been produced, in some cases even on production lines which operate largely automatically, for the television set. The high-voltage transformers are already mounted on this television chassis. Since these television set chassis go through different production stages, for example also run through a solder bath, cables connected to the high-voltage transformer are undesirable because they can cause disruptions in the manufacture of the television set chassis.
Außerdem stellt sich mitunter erst bei der Montage der Fernsehgeräte heraus, welches Kabel für die Verbindung des auf dem Fernsehgerätechassis angeordneten Hochspannungstransformators mit der Bildröhre benötigt wird. In einem solchen Fall ist eine einfache Montage dieser Verbindungen erwünscht.In addition, it sometimes only becomes apparent when the television sets are being assembled which cable is required for connecting the high-voltage transformer arranged on the television set chassis to the picture tube. In such a case, simple assembly of these connections is desirable.
Der Erfindung liegt daher das technische Problem zugrunde, einen Hochspannungstransformator für Fernsehgeräte zu schaffen, an dem die Anschlußkabel für die hohen Gleichspannungen lösbar, aber dennoch zugfest befestigt sind, bei dem eine gute Kontaktgabe mit den Anschlüssen im Inneren des Hochspannungstransformators gewährleistet ist und der eine möglichst geringe Bauhöhe aufweist.The invention is therefore based on the technical problem of creating a high-voltage transformer for televisions, to which the connecting cables for the high direct voltages are detachable but nevertheless fastened in a manner that ensures good contact with the connections inside the high-voltage transformer and the one if possible has low overall height.
Dieses technische Probelm ist erfindungsgemäß dadurch gelöst, daß das Isolierstoffgehäuse eine einstückig angeformte rohrförmige Verlängerung mit einer einstückig angeformten Öse besitzt, daß eine auf die Verlängerung aufsteckbare, an ihrem unteren Ende mit einem einstückig angeformten federnden, mit der Öse zusammenwirkenden Haken versehene Hülse vorgesehen ist, an der einstückig eine in den für die Aufnahme des Hochspannungskabels vorgesehenen Raum der Verlängerung eintauchende Lasche angeformt ist.This technical problem is solved according to the invention in that the insulating housing has an integrally molded tubular extension with an integrally molded eyelet, that one can be plugged onto the extension and has one piece at its lower end molded resilient, provided with the eyelet cooperating sleeve is provided on which is integrally formed a plunger into the space provided for receiving the high-voltage cable extension.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Ansprüchen 2 bis 4 enthalten. Sie ist nachstehend anhand der Figuren 1 und 2 näher erläutert. Es zeigen:
- Fig.1 den Längsschnitt durch den Teil eines Hochspannungstransformators mit den erfindungsgemäßen Merkmalen und
- Fig.2 die Draufsicht auf einen Schnitt entlang der Linie AB gemäß Fig.1.
- 1 shows the longitudinal section through the part of a high-voltage transformer with the features according to the invention and
- 2 shows the top view of a section along the line AB according to FIG.
Wie aus Fig.1 zu erkennen, sind in dem Isolierstoffgehäuse 1 die Primärwicklung 2 und die Sekundärwicklungen des Hcohspannungstransformators angeordnet. Die Sekundärwicklungen sind in Kammern des Spulenkörpers 3 untergebracht, und zwischen den in den Kammern untergebrachten Sekundärwicklungen sind Dioden 4 angeordnet. Daran ist zu erkennen, daß es sich bei den gezeigten Ausführungsbeispiel um einen Diodensplit - Hochspannungstransformator handelt. Bei dem Anschlußstift 5 handelt es sich um den Hochspannunganschluß. Die Spitze des Anschlußstiftes 5 endet in einem Pfropfen 6 aus Leitgummi, welcher an der tiefsten Stelle der rohrförmigen Verlängerung 7 angeordnet ist. In den Pfropfen 6 taucht auch die Seele 8 des Hochspannungskabels 9 ein.As can be seen from FIG. 1, the primary winding 2 and the secondary windings of the high-voltage transformer are arranged in the insulating material housing 1. The secondary windings are accommodated in chambers of the coil former 3, and
Es ist ein weiteres Anschlußkabel 10 zum Hochspannungstransformator geführt und in der Vertiefung 20 des Isolierstoffgehäuses 1 angeordnet; bei diesem Anschlußkabel kann es sich beispielsweise um das Kabel handeln, mit dem die Fokussierungsspannung vom Hochspannungstransformator zum Fernsehgerätechassis geführt wird. Auch bei dieser Anordnung ist die elektrisch leitende Verbindung dadurch hergestellt, daß der entsprechende Abgriff an der Sekundärabwicklung mit dem Anschlußstift 11 in den Pfropfen 12 aus Leitgummi geführt ist, in welchen auch die Seele 13 des Anschlußkabels 10 eintaucht.There is a
Die Verlängerung 7 des Isolierstoffgehäuses 1 weist - wenigstens im oberen Teil - einen von oben nach unten abnehmenden Innendurchmesser auf. Im unteren Teil des Inneren der Verlängerung 7, nicht weit von der Oberfläche des Pfropfens 6 entfernt, ist an der Innenwand der Verlängerung 7 eine radial nach innen gerichtete Klemmnase 14 einstückig angeformt. Da es sich bei diesen Bauteilen des Hochspannungstransformators in der Regel um Kunststoffspritzteile handeln wird, sind die einstückig angeformten Teile bereits bei der Herstellung der Kunststoffspritzteile mit hergestellt worden. Auf der Außenseite der Verlängerung 7 ist auch die Öse 15 einstückig angeformt worden.The
Bei der aus Fig.1 ersichtlichen Darstellung, bei welcher das Hochspannungskabel 9 und das Anschlußkabel 10 bereits fest montiert sind, ist erkennbar, daß die Hülse 16 über die Verlängerung 7 geschoben worden ist.1, in which the high-voltage cable 9 and the connecting
Die Hülse 16 besitzt eine sich in den Innenraum der Verlängerung 7 erstreckende Lasche 17. Am unteren Ende der Hülse 16 ist der Haken 18 einstückig angeformt, welcher hinter der Öse 15 einrastet. Außerdem ist die Hülse 16 mit der einstückig angeformten Klammer 19 versehen.The
Die Montage des Hochspannungskabels 9 erfolgt in folgender Weise:
Nachdem die Hülse 16 auf das Ende des Hochspannungskabels 9, an dem die Seele 8 freigelegt worden ist, aufgesteckt worden ist, wird dieses Ende des Hochspannungskabel bis zum Pfropfen 6 in die Verlängerung 7 eingeschoben. Anschließend wird die Hülse 16 auf die Verlängerung 7 aufgeschoben. Dabei schiebt sich die Lasche 17 zwischen die Innenfläche der Verlängerung 7 und die Oberfläche des Hochspannungskabels 9. Dadurch wird das Ende des Hochspannungskabels 9 einerseits in der Verlängerung 7 festgeklemmt und andererseits dringt die Klemmnase 14 in die Isolation des Hochspannungskabels 9 ein. Das erzeugt eine formschlüssige Befestigung des Hochspannungskabels. Die Lage der Hülse 16 ist dadurch gesichert, daß der Haken 18 hinter der Öse 15 eingerastet ist.The high-voltage cable 9 is installed in the following way:
After the
Die Kontaktgabe erfolgt beim Anschlußkabel 10 in der Vertiefung 20 mit den gleichen Mitteln wie beim Hochspannungskabel 9. Die Zugentlastung des Anschlußkabels 10 erfolgt dadurch, daß es an der Klammer 19 festgeklemmt ist.The contact is made with the connecting
Die Ausgestaltung der Klammer 19, der Lasche 17 und der Öse 15 ist aus Fig.2 deutlich zu erkennen.The design of the
Die erfindungsgemäße Lösung bringt eine Verbesserung in mehrfacher Hinsicht. Sie vereinfacht die Montage der Anschlußkabel. Das Hineinschieben der Kabelenden an den vorgesehenen Ort ist ohne Behinderung möglich. Für die Befestigung von zwei oder mehr Kabeln ist nur ein Bauteil erforderlich. Bei dem neuen Hochspannungstransformator können die erforderlichen Sicherheitswerte auch bei einer geringeren Bauhöhe eingehalten werden.The solution according to the invention brings about an improvement in several respects. It simplifies the assembly of the connection cables. Pushing the cable ends into the intended location is possible without hindrance. Only one component is required to fasten two or more cables. With the new high-voltage transformer, the required safety values can be maintained even with a lower overall height.
Die erforderliche Isolationslänge beim Hochspannungsanschluß des neuen Hochspannungstransformators wird durch die Länge der Hülse 16 eingestellt. Da die Hülse 16 aber erst bei der Endmontage des Fernsehgerätes montiert wird, weist der neue Hochspannungstransformator bei der Herstellung des Fernsehgerätechassis eine geringere Bauhöhe als im Endzustand auf, wodurch die Handhabung des Fernsehgerätechassis erleichtert wird.The required insulation length for the high-voltage connection of the new high-voltage transformer is set by the length of the
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3800477 | 1988-01-11 | ||
DE3800477A DE3800477A1 (en) | 1988-01-11 | 1988-01-11 | HIGH VOLTAGE TRANSFORMER FOR TELEVISIONS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0324084A2 true EP0324084A2 (en) | 1989-07-19 |
EP0324084A3 EP0324084A3 (en) | 1990-06-27 |
EP0324084B1 EP0324084B1 (en) | 1994-01-19 |
Family
ID=6345038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88119532A Expired - Lifetime EP0324084B1 (en) | 1988-01-11 | 1988-11-24 | High-voltage transformer for television sets |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0324084B1 (en) |
DE (2) | DE3800477A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0461713A1 (en) * | 1990-06-14 | 1991-12-18 | Koninklijke Philips Electronics N.V. | Device comprising a connection member provided with a seal for a high-voltage cable |
EP0676778A1 (en) * | 1994-04-09 | 1995-10-11 | NOKIA TECHNOLOGY GmbH | High-voltage transformer |
FR2726686A1 (en) * | 1994-11-07 | 1996-05-10 | Thomson Television Components | HIGH VOLTAGE TRANSFORMER WITH FRACTIONAL RECTIFICATION WITH CLUSTERED DIODES |
GB2298318A (en) * | 1995-02-27 | 1996-08-28 | Murata Manufacturing Co | Flyback transformer |
GB2298521A (en) * | 1995-02-28 | 1996-09-04 | Murata Manufacturing Co | Flyback transformer |
EP1073073A1 (en) * | 1999-07-27 | 2001-01-31 | Thomson Television Components France | Transformer, especially for powering cathode ray tubes |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4232090C1 (en) * | 1992-09-25 | 1994-04-07 | Loewe Opta Gmbh | HV transformer for display monitor or TV receiver CRT - has transformer windings carried by plastics former enclosed by sealed housing filled with insulation liquid. |
DE19609656C1 (en) * | 1996-03-12 | 1997-07-24 | Acer Peripherals Inc | Clamping bracket for outputs from horizontal line deflection transformer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0236642A1 (en) * | 1985-12-13 | 1987-09-16 | OREGA ELECTRONIQUE & MECANIQUE | High-voltage connection device, particularly for a high-voltage transformer |
-
1988
- 1988-01-11 DE DE3800477A patent/DE3800477A1/en not_active Withdrawn
- 1988-11-24 DE DE88119532T patent/DE3887311D1/en not_active Expired - Fee Related
- 1988-11-24 EP EP88119532A patent/EP0324084B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0236642A1 (en) * | 1985-12-13 | 1987-09-16 | OREGA ELECTRONIQUE & MECANIQUE | High-voltage connection device, particularly for a high-voltage transformer |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0461713A1 (en) * | 1990-06-14 | 1991-12-18 | Koninklijke Philips Electronics N.V. | Device comprising a connection member provided with a seal for a high-voltage cable |
EP0676778A1 (en) * | 1994-04-09 | 1995-10-11 | NOKIA TECHNOLOGY GmbH | High-voltage transformer |
FR2726686A1 (en) * | 1994-11-07 | 1996-05-10 | Thomson Television Components | HIGH VOLTAGE TRANSFORMER WITH FRACTIONAL RECTIFICATION WITH CLUSTERED DIODES |
WO1996014645A1 (en) * | 1994-11-07 | 1996-05-17 | Thomson Television Components France | Fractionated-rectification high-voltage transformer with grouped diodes |
US6133698A (en) * | 1994-11-07 | 2000-10-17 | Thomson Multimedia S.A. | Fractionated-rectification high-voltage transformer with grouped diodes |
US5742218A (en) * | 1995-02-27 | 1998-04-21 | Murata Manufacturing Co., Ltd. | Flyback transformer |
GB2298318B (en) * | 1995-02-27 | 1999-09-08 | Murata Manufacturing Co | A lead wire connection and flyback transformer including a lead wire connection |
GB2298318A (en) * | 1995-02-27 | 1996-08-28 | Murata Manufacturing Co | Flyback transformer |
GB2298521A (en) * | 1995-02-28 | 1996-09-04 | Murata Manufacturing Co | Flyback transformer |
US5815378A (en) * | 1995-02-28 | 1998-09-29 | Murata Manufacturing Co., Ltd. | Flyback transformer |
GB2298521B (en) * | 1995-02-28 | 2000-03-29 | Murata Manufacturing Co | Flyback transformers |
EP1073073A1 (en) * | 1999-07-27 | 2001-01-31 | Thomson Television Components France | Transformer, especially for powering cathode ray tubes |
US6552641B1 (en) | 1999-07-27 | 2003-04-22 | Thomson Licensing S.A. | Transformer, especially for powering cathode ray tubes |
Also Published As
Publication number | Publication date |
---|---|
DE3887311D1 (en) | 1994-03-03 |
EP0324084B1 (en) | 1994-01-19 |
DE3800477A1 (en) | 1989-07-20 |
EP0324084A3 (en) | 1990-06-27 |
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