EP0255638B1 - Incandescence lamp and manufacturing of its tubular envelope - Google Patents
Incandescence lamp and manufacturing of its tubular envelope Download PDFInfo
- Publication number
- EP0255638B1 EP0255638B1 EP87110420A EP87110420A EP0255638B1 EP 0255638 B1 EP0255638 B1 EP 0255638B1 EP 87110420 A EP87110420 A EP 87110420A EP 87110420 A EP87110420 A EP 87110420A EP 0255638 B1 EP0255638 B1 EP 0255638B1
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- European Patent Office
- Prior art keywords
- section
- mandrel
- wire
- spiral
- bulb
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/18—Mountings or supports for the incandescent body
- H01K1/24—Mounts for lamps with connections at opposite ends, e.g. for tubular lamp
Definitions
- the invention relates to an electric light bulb with an incandescent spiral, which is enclosed by a tube bulb and is supported by at least one retaining ring, which in turn is in contact with the tube bulb.
- the incandescent lamp is a gas-filled incandescent lamp (so-called halogen light floodlight) with a tube bulb flattened at both ends, especially of halogen line spotlights. Furthermore, the invention relates to the manufacture of the tubular bulb by forming and inserting the retaining ring in the piston.
- the spiral is provided in a known manner with the retaining ring in such a way that a mandrel is inserted into the spiral and the part of the retaining ring comprising the spiral is clamped onto the turns of the spiral, after which the spiral provided with the retaining ring is inserted into the tube bulb and the Mandrel is withdrawn.
- the relatively brittle spiral can break when the mandrel is inserted into the spiral, during the clamping of the retaining ring on the spiral, the spiral can deform in an undesirable manner and further disadvantageous deformations can occur when the spiral is inserted with the retaining ring into the piston.
- the retaining rings are only loosely fitted to the inner wall of the tube bulb, they cannot hold the spiral in the axis of the bulb with corresponding certainty during the operation of the incandescent lamp, so the spiral can easily move out of the axis of the tube bulb.
- an essential process step in the manufacture of the retaining ring is the one in which a mandrel is drawn into the spiral in order to be able to pull the ring part comprising the spiral onto the spiral.
- the object of the invention in addition to eliminating the disadvantages mentioned above, is to provide an incandescent lamp with such a retaining ring, which forms a unit with the tubular bulb, and furthermore the development of such a method for producing the tubular bulb with the retaining ring, with the help of which the complete automation of lamp assembly manufacturing technology can be solved.
- the invention is based on the finding that the spiral can be held more precisely and without deformation in the axis line of the tube bulb during operation of the lamp if the retaining rings form a unit with the tube bulb and not with the spiral.
- the spiral of gas-filled incandescent lamps with a tubular bulb flattened at both ends was converted from one with the other Inner wall of the tubular piston in contact with the first section and adjoining, surrounding the spiral and thereby holding this in the axis of the tubular piston second section existing retaining ring, the first of which is provided with a length exceeding a complete turn and a larger diameter Section presses against the inner wall of the tube bulb, during which the second section adjoining the first section, which has a smaller diameter and also a length exceeding a complete turn, has an inner diameter which exceeds the outer diameter of the spiral arranged in its interior and thus surrounds it loosely.
- one end of a flexible metal wire is attached to a mandrel of appropriate size provided with an insert, the wire by winding onto the mandrel body and onto the insert, likewise in a length exceeding at least one winding turn applied, then cut the wire at its unsecured end.
- the tube piston located in the axis of the mandrel is then pulled onto the mandrel provided with the wire up to a corresponding stop point. As soon as the tube bulb reaches the stop point, the attached wire end is exposed by pulling back the insert.
- the larger diameter section of the retaining ring made of flexible metal wire now presses against the inner wall of the tube bulb.
- the mandrel is withdrawn and, if necessary, positioned to produce another retaining ring.
- the largest diameter of the retaining ring wound on the mandrel must be designed in such a way that it does not prevent the tube piston from being pulled onto the mandrel, ie the tube piston can be guided onto the mandrel without friction.
- the diameter of the smaller diameter section of the retaining ring wound on the mandrel is determined by the dimensions of the insert and the elasticity of the wire and has to be such that it surrounds the spiral of the light bulb only loosely.
- the spiral of the incandescent lamp is pulled into the retaining rings using a special tool.
- the spiral can move freely inside the retaining ring, so it retains its shape both during assembly and during operation and does not deform.
- the gas-filled incandescent lamp provided with a retaining ring designed according to the invention can be operated not only in a horizontal position but also in any position.
- the retaining ring remains in any position of the piston due to its position pressed against the inner wall of the piston in the position assumed during assembly, in contrast to the conventional retaining rings, which only remain in the position received during assembly in the horizontal position of the piston.
- a holding a spiral 2 in the axis of the tube bulb 1 holding ring 3 is arranged.
- the retaining ring 3 has two sections: a spiral-shaped first section which exceeds a complete winding path in length and which presses tightly against the inner wall of the tubular bulb 1, and this adjoins the first section and also has a length which adjoins the first section spiral-shaped second section which completely exceeds the winding path, the inside diameter of which is smaller than the diameter of the first section, but exceeds the outside diameter of the spiral which extends in its interior.
- the retaining ring 3 cannot move in the tube bulb 1, but the spiral 2 can move in the retaining ring 3 in the axial direction, since the length of the second section of the retaining ring is greater than one turn of the winding but shorter than the conventional one, which means that The number of spiral passages that are not glowing in a corresponding manner and are excluded from the function is lower.
- FIGS. 3a and 3b An example of the manufacture and insertion of this retaining ring 3 in the piston is illustrated schematically in FIGS. 3a and 3b.
- one end of a flexible metal wire in the present example a tungsten wire
- a tungsten wire is inserted into a recess formed on the mandrel 5 after the displacement of an insert 6.
- the insert 6 is returned to its original position, whereby the wire end is fastened.
- the mandrel 5 is moved in the radial and tangential direction, during which the insert 6 also moves forward.
- the wire winds on the mandrel body and on the insert.
- the tube piston 1 arranged in the axis line of the mandrel 5 is moved forward until a predetermined position is reached (up to a stop point), i.e.
- the advantage of the retaining ring designed according to the invention is that the deformation of the spiral of the incandescent lamp is largely prevented and is secured during operation of holding the spiral in the axis line of the lamp in any position of the incandescent lamp.
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- Vessels And Coating Films For Discharge Lamps (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Resistance Heating (AREA)
Abstract
Description
Die Erfindung betrifft eine elektrische Glühlampe mit einer Glühspirale, die von einem Röhrenkolben umschlossen ist und von mindestens einem Haltering gestützt wird, der seinerseits mit dem Röhren kolben in Berührung steht.The invention relates to an electric light bulb with an incandescent spiral, which is enclosed by a tube bulb and is supported by at least one retaining ring, which in turn is in contact with the tube bulb.
Bei der Glühlampe handelt es sich um eine gasgefüllte Glühlampe (sogenannter Halogen-Lichtfluter) mit an beiden Enden abgeflachtem Röhrenkolben, insbesondere von Halogen-Linienstrahlern. Desweiteren betrifft die Erfindung die Herstellung des Röhrenkolbens durch Ausbildung und Einsetzen des Halteringes in den Kolben.The incandescent lamp is a gas-filled incandescent lamp (so-called halogen light floodlight) with a tube bulb flattened at both ends, especially of halogen line spotlights. Furthermore, the invention relates to the manufacture of the tubular bulb by forming and inserting the retaining ring in the piston.
Gemäß der zur Zeit allgemein bekannten und praktisch alleinstehenden Fertigungstechnologie, die in der Patentschrift US-A-3295007 und auch in dem Fachbuch "Fényforrások" (Lichtquellen) auf den Seiten 81 - 83 beschrieben wurde (das Fachbuch wurde im Jahre 1985 in Budapest von dem Technischen Verlag herausgegeben) sind die aus zwei Abschnitten bestehenden Halteringe in gasgefüllten Glühlampen mit an beiden Enden abgeflachtem Röhrenkolben mit ihrem einen Abschnitt zwischen den Windungsgängen der Glühspirale an diese anmontiert und liegen mit inrem anderen Abschnitt locker an der Innenwand des Rohrenkolbens an. Die Spirale wird auf bekannte Weise derart mit dem Haltering versehen, daß in die Spirale ein Dorn eingesetzt wird und an die Windungsgänge der Spirale der die Spirale umfassende Teil des Halteringes aufgespannt wird, wonach die mit dem Haltering versehene Spirale in den Röhrenkolben eingebracht wird und der Dorn zurückgezogen wird. Bei der Durchführung dieser Operationen kann bei dem Einsetzen des Dornes in die Spirale die verhältnismässig spröde Spirale zerspringen, bei dem Aufspannen des Halteringes auf die Spirale kann sich die Spirale auf unerwünschte Weise deformieren und bei dem Einsetzen der Spirale mit dem Haltering in den Kolben können weitere nachteiligen Deformationen auftreten. Da die Halteringe nur locker an die Innenwand des Röhrenkolbens angepaßt sind, können diese die Spirale wahrend des Betriebes der Glühlampe nicht mit entsprechender Sicherheit in der Achse des Kolbens halten, somit kann sich die Spirale leicht aus der Achse des Röhrenkolbens herausbewegen.According to the currently well-known and practically stand-alone manufacturing technology described in US-A-3295007 and also in the book "Fényforrások" (light sources) on pages 81-83 (the book was published in 1985 in Budapest by the Published by the technical publisher), the two-section retaining rings in gas-filled incandescent lamps with a tubular bulb flattened at both ends are attached to it with one section between the turns of the glow spiral and rest loosely on the inner wall of the tubular bulb with the other section. The spiral is provided in a known manner with the retaining ring in such a way that a mandrel is inserted into the spiral and the part of the retaining ring comprising the spiral is clamped onto the turns of the spiral, after which the spiral provided with the retaining ring is inserted into the tube bulb and the Mandrel is withdrawn. When carrying out these operations, the relatively brittle spiral can break when the mandrel is inserted into the spiral, during the clamping of the retaining ring on the spiral, the spiral can deform in an undesirable manner and further disadvantageous deformations can occur when the spiral is inserted with the retaining ring into the piston. Since the retaining rings are only loosely fitted to the inner wall of the tube bulb, they cannot hold the spiral in the axis of the bulb with corresponding certainty during the operation of the incandescent lamp, so the spiral can easily move out of the axis of the tube bulb.
Alle diese Umstände führen dazu, dass die bekannte Methode für Spiralen, deren Durchmesser unter einem bestimmten Wert liegt, nicht verwendet werden kann, weiterhin für die Fälle nicht geeignet ist, in denen der Dorn nicht in die Spiralen eingesetzt werden kann. (Wie bereits oben erwähnt wurde, ist ein unerläßlicher Verfahrensschritt bei der Fertigung des Halteringes derjenige, bei dem in die Spirale ein Dorn gezogen wird, um den die Spirale umfassenden Ringteil auf die Spirale aufziehen zu können.)All these circumstances mean that the known method cannot be used for spirals whose diameter is below a certain value, nor is it suitable for cases in which the mandrel cannot be inserted into the spirals. (As already mentioned above, an essential process step in the manufacture of the retaining ring is the one in which a mandrel is drawn into the spiral in order to be able to pull the ring part comprising the spiral onto the spiral.)
Das der Erfindung gestellte Ziel ist neben der Beseitigung der oben erwähnten Nachteile die Schaffung einer Glühlampe mit einem solchen Haltering, der mit dem Röhrenkolben eine Einheit bildet, desweiteren die Entwicklung eines solchen Verfahrens zur Herstellung des Röhren kolbens mit dem Haltering, mit Hilfe dessen gleichzeitig die vollständige Automatisierung der Fertigungstechnologie der Lampenmontage gelöst werden kann.The object of the invention, in addition to eliminating the disadvantages mentioned above, is to provide an incandescent lamp with such a retaining ring, which forms a unit with the tubular bulb, and furthermore the development of such a method for producing the tubular bulb with the retaining ring, with the help of which the complete automation of lamp assembly manufacturing technology can be solved.
Die Erfindung beruht auf der Erkenntnis, daß die Spirale während des Betriebes der Lampe genauer und ohne Deformierung in der Achsenlinie des Röhrenkolbens gehalten werden kann, wenn die Halteringe nicht mit der Spirale sondern mit dem Röhrenkolben eine Einheit bilden.The invention is based on the finding that the spiral can be held more precisely and without deformation in the axis line of the tube bulb during operation of the lamp if the retaining rings form a unit with the tube bulb and not with the spiral.
Aufgrund dieser Erkenntnis wurde zur Abstützung der Spirale von gasgefüllten Glühlampen mit an beiden Enden abgeflachtem Röhrenkolben ein aus einem mit der Innenwand des Röhrenkolbens in Berührung stehenden ersten Abschnitt und sich daran anschließendem, die Spirale umgebenden und dadurch diese in der Achse des Röhrenkolbens haltenden zweiten Abschnitt bestehender Haltering ausgebildet, wobei im Sinne der Erfindung dessen mit einer einen vollständigen Windungsgang überschreitenden Länge und einem größeren Durchmesser versehener erster Abschnitt sich an die Innenwand das Röhrenkolbens anpreßt, während dessen sich an den ersten Abschnitt anschließender, mit kleinerem Durchmesser und ebenfalls einer einen vollständigen Windungsgang überschreitenden Länge versehener zweiter Abschnitt einen den Außendurchmesser der in seinem Inneren angeordneten Spirale überschreitenden Innendurchmesser aufweist und somit diese locker umgibt.On the basis of this knowledge, the spiral of gas-filled incandescent lamps with a tubular bulb flattened at both ends was converted from one with the other Inner wall of the tubular piston in contact with the first section and adjoining, surrounding the spiral and thereby holding this in the axis of the tubular piston second section existing retaining ring, the first of which is provided with a length exceeding a complete turn and a larger diameter Section presses against the inner wall of the tube bulb, during which the second section adjoining the first section, which has a smaller diameter and also a length exceeding a complete turn, has an inner diameter which exceeds the outer diameter of the spiral arranged in its interior and thus surrounds it loosely.
Zur Herstellung dieses Halteringes und dessen Einsetzen in den Kolben wird im Sinne der Erfindung ein Ende eines flexiblen Metalldrahtes an einem mit einer Einlage versehenen Dorn entsprechender Abmessung befestigt, der Draht durch Wicklung auf den Dornkörper und auf die Einlage, gleicherweise in mindestens einen Windungsgang überschreitender Länge aufgebracht, dann der Draht an seinem unbefestigten Ende abgeschnitten. Danach wird der in der Achse des Dorns befindliche Röhrenkolben auf den mit dem Draht versehenen Dorn bis zu einem entsprechenden Anschlagspunkt gezogen. Sowie der Röhrenkolben den Anschlagspunkt erreicht, wird durch Zurückziehen der Einlage das befestigte Drahtende freigelegt. Der einen grösseren Durchmesser aufweisende Abschnitt des aus flexiblem Metalldraht gefertigten Halteringes preßt sich nun an die Innenwand des Röhrenkolbens an. Der Dorn wird zurückgezogen und falls erforderlich zur Herstellung eines weiteren Halteringes positioniert.For the production of this retaining ring and its insertion in the piston, one end of a flexible metal wire is attached to a mandrel of appropriate size provided with an insert, the wire by winding onto the mandrel body and onto the insert, likewise in a length exceeding at least one winding turn applied, then cut the wire at its unsecured end. The tube piston located in the axis of the mandrel is then pulled onto the mandrel provided with the wire up to a corresponding stop point. As soon as the tube bulb reaches the stop point, the attached wire end is exposed by pulling back the insert. The larger diameter section of the retaining ring made of flexible metal wire now presses against the inner wall of the tube bulb. The mandrel is withdrawn and, if necessary, positioned to produce another retaining ring.
Der größte Durchmesser des auf den Dorn gewickelten Halteringes ist derart auszubilden, daß er das Aufziehen des Röhrenkolbens auf den Dorn nicht verhindert, d.h. der Röhrenkolben ohne Reibung auf den Dorn geführt werden kann.The largest diameter of the retaining ring wound on the mandrel must be designed in such a way that it does not prevent the tube piston from being pulled onto the mandrel, ie the tube piston can be guided onto the mandrel without friction.
Der Durchmesser des einen kleineren Durchmesser aufweisenden Abschnittes des auf den Dorn aufgewickelten Halteringes wird durch die Abmessungen der Einlage und die Elastizität des Drahtes bestimmt und hat ein solches Maß aufzuweisen, daß dieser die Spirale der Glühlampe nur locker umgibt.The diameter of the smaller diameter section of the retaining ring wound on the mandrel is determined by the dimensions of the insert and the elasticity of the wire and has to be such that it surrounds the spiral of the light bulb only loosely.
Nachdem die Halteringe in vorgegebener Anzahl auf die obenbeschriebene Weise in den Röhrenkolben eingesetzt wurden, wird die Spirale der Glühlampe mittels eines Spezialwerkzeuges in die Halteringe gezogen.After the retaining rings have been inserted into the tube bulb in the manner described above, the spiral of the incandescent lamp is pulled into the retaining rings using a special tool.
Die Spirale kann sich im Inneren des Halteringes geringfügig frei bewegen, somit behält sie sowohl während der Montage als auch während des Betriebes ihre Form bei, deformiert sich nicht. Die mit einem gemäß der Erfindung ausgebildeten Haltering versehene gasgefüllte, an beiden Enden abgeflachte Glühlampe kann nicht nur in waagerechter, sondern sogar in beliebiger Position betrieben werden. Der Haltering bleibt bei jeder beliebigen Lage des Kolbens durch seine an die Innenwand des Kolbens angepreßte Position in der bei der Montage angenommenen Lage, im Gegensatz zu den herkömmlichen Halteringen, die nur in der waagerechten Position des Kolbens in der während der Montage aufgenommenen Position verbleiben.The spiral can move freely inside the retaining ring, so it retains its shape both during assembly and during operation and does not deform. The gas-filled incandescent lamp provided with a retaining ring designed according to the invention can be operated not only in a horizontal position but also in any position. The retaining ring remains in any position of the piston due to its position pressed against the inner wall of the piston in the position assumed during assembly, in contrast to the conventional retaining rings, which only remain in the position received during assembly in the horizontal position of the piston.
Nachstehend wird die Erfindung anhand der Zeichnung ausführlicher beschrieben, wobei in der Zeichnung ein Ausführungsbeispiel des erfindungsgemäßen Halteringes und ein Beispiel für die Herstellung des Halteringes und seine Montage in den Röhrenkolben veranschaulicht sind. In der Zeichnung zeigen:
- Fig. 1
- einen Längsschnitt eines Ausschnittes einer an beiden Enden abgeflachten, mit Röhrenkolben versehenen, gasgefüllten Glühlampe,
- Fig. 2
- einen entlang der Linie II-II aufgenommenen Querschnitt der mit einem Röhrenkolben versehenen, gasgefüllten Glühlampe gemäß Fig. 1,
- Fig. 3a
- den den Haltering ausbildenden Dorn gemeinsam mit dem darauf aufgewickelten Draht,
- Fig. 3b
- einen Längsschnitt eines Ausschnittes des Röhrenkolbens mit dem darin befindlichen und in Seitenansicht sichtbaren Dorn und dem von dem Dorn frei werdenden, ebenfalls in Seitenansicht sichtbaren Haltering.
- Fig. 1
- 2 shows a longitudinal section of a section of a gas-filled incandescent lamp flattened at both ends and provided with tubular bulbs,
- Fig. 2
- 2 shows a cross section, taken along line II-II, of the gas-filled incandescent lamp provided with a tubular bulb according to FIG. 1,
- Fig. 3a
- the mandrel forming the retaining ring together with the wire wound on it,
- Fig. 3b
- a longitudinal section of a section of the tube bulb with the mandrel located therein and visible in side view and the retaining ring becoming free from the mandrel, also visible in side view.
Aus Fig. 1 ist ersichtlich, daß in einem Röhrenkolben 1 einer als Beispiel veranschaulichten, gasgefällten, an beiden Enden abgeflachten Glühlampe ein eine Spirale 2 in der Achse des Röhrenkolbens 1 haltender Haltering 3 angeordnet ist. Der Haltering 3 weist zwei Abschnitte auf: einen in seiner Länge einen vollständigen Windungsgang überschreitenden, spiralförmigen ersten Abschnitt, der sich dicht an die Innenwand des Röhrenkolbens 1 anpreßt, an dieser anliegt, und einen sich an den ersten Abschnitt anschließenden, ebenfalls in seiner Länge einen vollständigen Windungsgang überschreitenden, spiralförmigen zweiten Abschnitt, dessen Innendurchmesser kleiner als der Durchmesser des ersten Abschnittes ist, den Außendurchmesser der sich in seinem Inneren hinziehenden Spirale jedoch überschreitet. Der Haltering 3 kann sich in dem Röhrenkolben 1 nicht bewegen, die Spirale 2 kann sich jedoch in dem Haltering 3 in axialer Richtung bewegen, da die Länge des zweiten Abschnittes des Halteringes größer als ein Windungsgang, jedoch kürzer als bei der herkömmlichen ist, wodurch die Anzahl der nicht auf entsprechende Weise glühenden, von der Funktion ausgeschlossenen Spiralgänge geringer ist.From Fig. 1 it can be seen that in a tube bulb 1 of an exemplified, gas-precipitated, flattened bulb at both ends, a holding a spiral 2 in the axis of the tube bulb 1 holding ring 3 is arranged. The retaining ring 3 has two sections: a spiral-shaped first section which exceeds a complete winding path in length and which presses tightly against the inner wall of the tubular bulb 1, and this adjoins the first section and also has a length which adjoins the first section spiral-shaped second section which completely exceeds the winding path, the inside diameter of which is smaller than the diameter of the first section, but exceeds the outside diameter of the spiral which extends in its interior. The retaining ring 3 cannot move in the tube bulb 1, but the spiral 2 can move in the retaining ring 3 in the axial direction, since the length of the second section of the retaining ring is greater than one turn of the winding but shorter than the conventional one, which means that The number of spiral passages that are not glowing in a corresponding manner and are excluded from the function is lower.
Aus Fig. 2 ist ersichtlich, daß sich der mit größerem Durchmesser ausgebildete Abschnitt des Halteringes 3 an seinem gesamten Umfang an den Innenmantel des Röhrenkolbens 1 anpreßt, sogar bei größeren mechanischen Einwirkungen nicht bewegt und einen integrierten Teil des Röhrenkolbens 1 bildet. Eine beispielsweise Herstellung und Einsetzung dieses Halteringes 3 in den Kolben ist in den Figuren 3a und 3b schematisch veranschaulicht.From Fig. 2 it can be seen that the Larger diameter section of the retaining ring 3 presses on its entire circumference against the inner jacket of the tube piston 1, does not move even with greater mechanical effects and forms an integrated part of the tube piston 1. An example of the manufacture and insertion of this retaining ring 3 in the piston is illustrated schematically in FIGS. 3a and 3b.
Wie aus Fig. 3a ersichtlich ist, wird ein Ende eines flexiblen Metalldrahtes, in dem vorliegenden Beispiel eines Wolframdrahtes, nach dem Verschieben einer Einlage 6 in eine auf dem Dorn 5 ausgebildete Ausnehmung eingelegt. Danach wird die Einlage 6 in ihre ursprüngliche Lage zurückgeführt, wodurch das Drahtende befestigt wird. Der Dorn 5 wird in radiale und tangentiale Richtung bewegt, währenddessen bewegt sich auch die Einlage 6 vorwärts. Der Draht wickelt sich auf den Dornkörper und auf die Einlage auf. Nachdem der Draht mit einer vorgegebenen Länge aufgewickelt wurde, wird er mit einer Schneidevorrichtung abgeschnitten. Danach wird der in der Achsenlinie des Dornes 5 angeordnete Röhrenkolben 1 bis zum Erreichen einer vorgegebenen Position (bis zu einem Anschlagspunkt) nach vorn bewegt, d.h. auf den Dorn 5 auf die in Fig. 3b veranschaulichte Weise aufgeschoben. Durch Verschieben der Einlage 6 wird das befestigte Drahtende freigegeben. Daraufhin preßt sich der Haltering 3 infolge der in ihm gespeicherten Federkraft an die Innenwand des Röhrenkolbens 1 und befestigt sich an dieser.As can be seen from FIG. 3a, one end of a flexible metal wire, in the present example a tungsten wire, is inserted into a recess formed on the mandrel 5 after the displacement of an insert 6. Then the insert 6 is returned to its original position, whereby the wire end is fastened. The mandrel 5 is moved in the radial and tangential direction, during which the insert 6 also moves forward. The wire winds on the mandrel body and on the insert. After the wire has been wound up with a predetermined length, it is cut off with a cutting device. Thereafter, the tube piston 1 arranged in the axis line of the mandrel 5 is moved forward until a predetermined position is reached (up to a stop point), i.e. pushed onto the mandrel 5 in the manner illustrated in FIG. 3b. By moving the insert 6, the attached wire end is released. Then the retaining ring 3 presses due to the spring force stored in it on the inner wall of the tube bulb 1 and attaches to it.
Obiges zusammenfassend besteht der Vorteil des erfindungsgemäß ausgebildeten Halteringes darin, daß die Deformation der Spirale der Glühlampe weitgehend verhindert wird und bei einem in beliebiger Position der Glühlampe erfolgenden Betrieb des Halten der Spirale in der Achsenlinie der Lampe gesichert wird. Ein wesentlicher Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß eine automatische (maschinelle) Glühlampenmontage gewährleistet wird.To summarize the above, the advantage of the retaining ring designed according to the invention is that the deformation of the spiral of the incandescent lamp is largely prevented and is secured during operation of holding the spiral in the axis line of the lamp in any position of the incandescent lamp. There is a significant advantage of the method according to the invention in that an automatic (mechanical) light bulb assembly is guaranteed.
Claims (2)
- Electric incandescent lamp comprising a helical incandescent filament enclosed by a tubular bulb (1) and supported by at least one support ring (3) constituted by a spiral-shaped member made of flexible metal wire, the support ring (3) having a first section of greater diameter contacting the tubular bulb (1), and a second section of smaller diameter surrounding the helical filament (2) and holding it approximately in the axis of the tubular bulb (1), characterised in that the first section of the support ring (3) is of a length exceeding at least one complete turn and presses itself against the inner wall of the tubular bulb (1), while the second section of the support ring (3) following the first section also exceeds the length of at least one complete turn and has an inner diameter exceeding the outer diameter of the helical filament (2) arranged therein.
- Manufacture of a tubular bulb (1) having at least one support ring (3) clamped on the inner wall of the bulb for supporting the helical incandescent filament (2) for the manufacture of an electric incandescent lamp according to claim 1, characterised in that for forming the support ring (3), one end of a flexible metal wire is fastened to a mandrel (5) provided with an insert (6), a length of the wire exceeding at least one turn is wound onto the insert (6), the wire is cut off, the tubular bulb (1) is drawn onto the mandrel (5) up to a predetermined stop point, then the fastened end of the wire is released by displacing the insert (6), and the mandrel (5) is withdrawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT87110420T ATE89100T1 (en) | 1986-08-06 | 1987-07-17 | ELECTRIC BULB AND MANUFACTURE OF ITS TUBE BULB. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU863377A HU195707B (en) | 1986-08-06 | 1986-08-06 | Ring for supporting the spiral filament of gas-filled incandescent lamp with tube-like envelope flattened on both ends and method for making the said ring and for putting the said ring into the envelope |
| HU337786 | 1987-06-11 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0255638A2 EP0255638A2 (en) | 1988-02-10 |
| EP0255638A3 EP0255638A3 (en) | 1989-11-29 |
| EP0255638B1 true EP0255638B1 (en) | 1993-05-05 |
Family
ID=10963811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87110420A Revoked EP0255638B1 (en) | 1986-08-06 | 1987-07-17 | Incandescence lamp and manufacturing of its tubular envelope |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0255638B1 (en) |
| JP (1) | JPS6348741A (en) |
| AT (1) | ATE89100T1 (en) |
| DE (1) | DE3785703D1 (en) |
| HU (1) | HU195707B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3489277B2 (en) | 1995-07-17 | 2004-01-19 | トヨタ自動車株式会社 | Vehicle braking system |
| EP1349755B1 (en) | 2001-01-10 | 2006-10-25 | KSR Industrial Corporation | Brake pedal assembly with variable ratio |
| US6781291B2 (en) | 2001-06-27 | 2004-08-24 | Asm America Inc. | Filament support for lamp |
| US6856078B2 (en) | 2001-06-27 | 2005-02-15 | Asm America, Inc. | Lamp filament design |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1321044A (en) * | 1961-03-23 | 1963-03-15 | Lampes Sa | Filament holders for incandescent lamps |
| US3295007A (en) * | 1964-06-25 | 1966-12-27 | Gen Electric | Differential output tubular incandescent lamp |
| US3820207A (en) * | 1972-02-04 | 1974-06-28 | Gen Electric | Method of manufacturing lamp with filament support structure |
-
1986
- 1986-08-06 HU HU863377A patent/HU195707B/en unknown
-
1987
- 1987-07-17 AT AT87110420T patent/ATE89100T1/en not_active IP Right Cessation
- 1987-07-17 DE DE8787110420T patent/DE3785703D1/en not_active Expired - Lifetime
- 1987-07-17 EP EP87110420A patent/EP0255638B1/en not_active Revoked
- 1987-08-05 JP JP62194558A patent/JPS6348741A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0255638A3 (en) | 1989-11-29 |
| HUT44359A (en) | 1988-02-29 |
| EP0255638A2 (en) | 1988-02-10 |
| DE3785703D1 (en) | 1993-06-09 |
| HU195707B (en) | 1988-06-28 |
| JPS6348741A (en) | 1988-03-01 |
| ATE89100T1 (en) | 1993-05-15 |
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