EP0072291A2 - Fastening wedge for a television tube deflection assembly - Google Patents

Fastening wedge for a television tube deflection assembly Download PDF

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Publication number
EP0072291A2
EP0072291A2 EP82401397A EP82401397A EP0072291A2 EP 0072291 A2 EP0072291 A2 EP 0072291A2 EP 82401397 A EP82401397 A EP 82401397A EP 82401397 A EP82401397 A EP 82401397A EP 0072291 A2 EP0072291 A2 EP 0072291A2
Authority
EP
European Patent Office
Prior art keywords
wedge
adhesive
fixing block
coils
thickness
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
EP82401397A
Other languages
German (de)
French (fr)
Other versions
EP0072291A3 (en
EP0072291B1 (en
Inventor
Thilo Kittner
Rudolf Wagner
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.)
Videocolor SA
Original Assignee
Videocolor SA
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 Videocolor SA filed Critical Videocolor SA
Publication of EP0072291A2 publication Critical patent/EP0072291A2/en
Publication of EP0072291A3 publication Critical patent/EP0072291A3/en
Application granted granted Critical
Publication of EP0072291B1 publication Critical patent/EP0072291B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
    • H01J29/823—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements around the neck of the tube
    • H01J29/826—Deflection arrangements

Definitions

  • the present invention relates to a fixing shim for the deflection coils, which is placed between the latter and the cone of the cathode ray tube, in particular, of a cathode ray tube for color television.
  • shims whose lower face is profiled.
  • the final bonding, outside of the adjustment machine, is carried out by injecting an adhesive through openings in the center of the profile. Due to the presence of these central openings for the injection of the adhesive, the insertion depth of these shims is less than about 50%, compared to the solution discussed above. Indeed, the opening of the profile must always remain accessible. This has the consequence that we are obliged to keep shims of different thicknesses in stock.
  • the present invention has set itself the aim of simplifying this wedging procedure by using, to achieve the advantages thereof, as far as possible, a single type of wedge.
  • the fixing block according to the invention comprises a mounting lug of the type specified above, the maximum height of which in its transition region of the mounting lug decreases approximately 60 times and in that it has an opening for the injection of an adhesive which is offset towards the free beginning of the profile.
  • the thickness of the shim decreases from 12 mm to, at most, 0.2 mm.
  • the shim is made of natural or synthetic rubber and of adopting a one-component silicone adhesive for bonding, if necessary.
  • the fixing block according to the invention combines the advantages of the two solutions mentioned above. This results in a wedge having an opening in its profile, and which makes it possible to apply the adhesive in an extremely rational manner, and whose insertion depth is large.
  • An adhesive is injected into the opening 4, in particular a hot adherent glue, which emerges at 7 and hardens.
  • the depth of insertion or insertion of the shims which, in the case of common profiled shims is approximately 20 mm, has been increased to approximately 28 mm.
  • this shim can be pushed into place, even when the deflection coil has tilted to the maximum.
  • Butyl rubber is particularly suitable for the manufacture of these shims because of its good adhesion properties.
  • chlorinated polyethylene, chloroprene and natural rubber the first two having, moreover, the advantage of being hardly flammable, even without the addition of 'an anti-inflammation agent.
  • the shims obtained have a Shore A hardness of around 65.
  • a double-sided adhesive strip 6 is used on the tab, as indicated. This can, for example, be of the 3M-412 type.
  • a silicone adhesive with a single component 8 is preferably used.
  • adhesives having advantageous extrusion properties such as this are particularly suitable. This is the case of the adhesives marketed under the names “Wacker Elastosil, type E41 and E43 or” TORAY-Silicone ".
  • a hot-adhesive adhesive 7 having good heat resistance is used which is marketed under the name "Versalon”.
  • This new fixing shim makes it possible to considerably improve the positioning of the deflection coil 1 on the cone 2 of the tube.
  • Stock keeping is also considerably simplified by the fact that only a standardized wedge model is used.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

1. Fastening wedge (3) for deflection coils (1) to be mounted between the coils and the conical portion of a cathode ray tube (2), in particular of a color television tube, this wedge being provided with a mounting extension (6) and its thickness decreasing from a maximum value in its transitional region with the mounting extension (6) to a minimum value at the location where it forms an edge, said wedge being characterized in that it is provided with an opening (4) for injecting an adhesive, this opening being located in the region of maximum thickness of the wedge, and in that the ratio between the maximum thickness and the minimum thickness of the wedge is approximately 60.

Description

La présente invention se rapporte à une cale de fixation pour les bobines de déviation, venant se placer entre ces dernières et le cône du tube cathodique, en particulier, d'un tube cathodique pour la télévision en couleurs.The present invention relates to a fixing shim for the deflection coils, which is placed between the latter and the cone of the cathode ray tube, in particular, of a cathode ray tube for color television.

Il est d'usage de fixer les bobines de télévision sur la partie conique des tubes à rayons cathodiques, en particulier, des cinescopes pour la télévision en couleurs, au moyen de cales. Il existe à cette fin des cales ou des coins dont la face inférieure est dentée et qu'on glisse sous les bobines de déviation conjointement avec la couche d'adhésif qui a été appliquée auparavent. On utilise ces cales lorsque les bobines sont facilement accessibles dans les automates de réglage, mais aussi lorsqu'on pratique le procédé d'échange, c'est à dire, lorsqu'on remplace successivement des cales provisoires qui ont été mises en place à l'extérieur de l'automate de réglage. Toutefois, l'application de ces cales est limitée, le collage est difficile.It is customary to fix the television coils on the conical part of cathode ray tubes, in particular, cinescopes for color television, by means of wedges. For this purpose there are wedges or wedges whose underside is toothed and which is slipped under the deflection coils together with the layer of adhesive which has been applied before. These shims are used when the coils are easily accessible in the automatic adjustment machines, but also when the exchange process is practiced, that is to say, when successively replacing temporary shims which have been installed at the outside of the adjustment machine. However, the application of these shims is limited, bonding is difficult.

Par ailleurs, il existe également des cales dont la face inférieure est profilée. Le collage définitif, à l'extérieur de l'automate de réglage, s'effectue en injectant un adhésif par des ouvertures ménagées au centre du profil. Du fait de la présence de ces ouvertures centrales pour l'injection de l'adhésif, la profondeur d'introduction de ces cales est inférieure d'environ 50 %, comparativement à la solution discutée plus haut. En effet, l'ouverture du profil doit toujours restée accessible. Ceci a pour conséquence qu'on est obligé de tenir en stock des cales de différentes épaisseurs.Furthermore, there are also shims whose lower face is profiled. The final bonding, outside of the adjustment machine, is carried out by injecting an adhesive through openings in the center of the profile. Due to the presence of these central openings for the injection of the adhesive, the insertion depth of these shims is less than about 50%, compared to the solution discussed above. Indeed, the opening of the profile must always remain accessible. This has the consequence that we are obliged to keep shims of different thicknesses in stock.

La présente invention s'est fixé pour but de simplifier cette procédure de calage en utilisant, pour en réaliser les avantages, dans toute la mesure du possible, un seul type de cale.The present invention has set itself the aim of simplifying this wedging procedure by using, to achieve the advantages thereof, as far as possible, a single type of wedge.

L'invention atteint les buts qu'elle s'est fixée en ce que la cale de fixation selon l'invention comporte une patte de montage du type spécifié ci-dessus dont la hauteur maximale dans sa région de transition de la patte de montage diminue d'environ 60 fois et en ce qu'elle présente une ouverture pour l'injection d'un adhésif qui est décalé vers le commencement libre du profil.The invention achieves the goals which it has set for itself in that the fixing block according to the invention comprises a mounting lug of the type specified above, the maximum height of which in its transition region of the mounting lug decreases approximately 60 times and in that it has an opening for the injection of an adhesive which is offset towards the free beginning of the profile.

De préférence, l'épaisseur de la cale diminue de 12 mm à, au maximum, 0,2 mm.Preferably, the thickness of the shim decreases from 12 mm to, at most, 0.2 mm.

Il est judicieux de pourvoir la patte de la cale d'une bande adhésive double face, c'est à dire, dont les deux côtés sont collants.It is advisable to provide the tab of the wedge with a double-sided adhesive strip, that is to say, whose two sides are sticky.

Il est avantageux que la cale soit constituée par un caoutchouc naturel ou synthétique et d'adopter pour le collage un adhésif aux silicones à un composant, le cas échéant.It is advantageous if the shim is made of natural or synthetic rubber and of adopting a one-component silicone adhesive for bonding, if necessary.

Ainsi, la cale de fixation selon l'invention combine les avantages des deux solutions citées plus haut. Il en résulte une cale ayant une ouverture dans son profil, et qui permet d'appliquer l'adhésif d'une manière extrêmement rationnelle, et dont la profondeur d'insertion est grande.Thus, the fixing block according to the invention combines the advantages of the two solutions mentioned above. This results in a wedge having an opening in its profile, and which makes it possible to apply the adhesive in an extremely rational manner, and whose insertion depth is large.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui va suivre, en référence à la figure unique annexée.Other characteristics and advantages of the invention will emerge from the description which follows, with reference to the attached single figure.

En se référant au dessin, on voit qu'entre la bobine de déviation 1 et le cône 2 du tube cathodique sont interposés un certain nombre de coins 3. Ces coins présentent une région découverte dans laquelle a été prévue une ouverture 4 par laquelle un adhésif peut être injecté. La face inférieure 5 est profilée de telle manière que, à partir d'une épaisseur très faible, par exemple, de 0,2 mm, celle-ci augmente rapidement environ 60 fois, c'est à dire, jusqu'à atteindre 12 mm. Pour faciliter les manipulations, la face inférieure des cales se prolonge par une patte 6. Cette patte 6 est pourvue d'une bande adhésive double face.Referring to the drawing, it can be seen that between the deflection coil 1 and the cone 2 of the cathode ray tube are interposed a number of corners 3. These corners have an uncovered region in which an opening 4 has been provided through which an adhesive can be injected. The lower face 5 is profiled in such a way that, from a very small thickness, for example, 0.2 mm, it increases rapidly about 60 times, that is to say, up to 12 mm . To facilitate handling, the underside of the shims is extended by a tab 6. This tab 6 is provided with a double-sided adhesive strip.

On injecte dans l'ouverture 4 un adhésif, en particulier, une colle adhérent à chaud, laquelle ressort en 7 et durcit.An adhesive is injected into the opening 4, in particular a hot adherent glue, which emerges at 7 and hardens.

La profondeur d'introduction ou d'enfoncement des cales qui, dans le cas des cales profilées courantes est d'environ 20 mm, a été portée à environ 28 mm.The depth of insertion or insertion of the shims which, in the case of common profiled shims is approximately 20 mm, has been increased to approximately 28 mm.

Du fait de sa forme effilée, cette cale peut être poussée en place, même lorsque la bobine de déviation a basculé au maximum.Because of its tapered shape, this shim can be pushed into place, even when the deflection coil has tilted to the maximum.

Le caoutchouc butylique convient particulièrement bien pour la fabrication de ces cales en raison de ses bonnes propriétés d'adhérence. Parmi les substances qui présentent une résistance toute particulière aux déformations permanentes, il convient de citer le polyéthylène chloré, le chloroprène et le caoutchouc naturel, les deux premiers ayant, en outre, l'avantage d'être difficilement inflammables, même sans une addition d'un agent anti- inflammation. Les cales obtenues présentent une dureté Shore A d'environ 65. Pour le collage des coins on utilise, comme il a été indiqué, une bande adhésive double face 6 sur la patte. Celle-ci peut, par exemple, être du type 3M-412. Pour le collage de la partie des cales comprise entre le verre et le bobinage, on utilise, de préférence, un adhésif aux silicones à un seul composant 8. A cette fin conviennent tout particulièrement les adhésifs ayant des propriétés avantageuses d'extrusion comme c'est le cas des adhésifs commercialisés sous les noms "Wacker Elastosil, type E41 et E43 ou "TORAY- Silicone". De plus, dans une variante, on utilise un adhésif adhérent à chaud 7 ayant une bonne résistance à la chaleur qui est commercialisé sous le nom "Versalon".Butyl rubber is particularly suitable for the manufacture of these shims because of its good adhesion properties. Among the substances which have a very particular resistance to permanent deformation, mention should be made of chlorinated polyethylene, chloroprene and natural rubber, the first two having, moreover, the advantage of being hardly flammable, even without the addition of 'an anti-inflammation agent. The shims obtained have a Shore A hardness of around 65. For bonding the corners, a double-sided adhesive strip 6 is used on the tab, as indicated. This can, for example, be of the 3M-412 type. For bonding the part of the shims between the glass and the winding, a silicone adhesive with a single component 8 is preferably used. For this purpose, adhesives having advantageous extrusion properties such as this are particularly suitable. this is the case of the adhesives marketed under the names "Wacker Elastosil, type E41 and E43 or" TORAY-Silicone ". In addition, in a variant, a hot-adhesive adhesive 7 having good heat resistance is used which is marketed under the name "Versalon".

Cette nouvelle cale de fixation permet d'améliorer considérablement le positionnement de la bobine de déviation 1 sur le cône 2 du tube. La tenue de stock est aussi considérablement simplifiée du fait qu'on n'utilise qu'un modèle de cale standardisé.This new fixing shim makes it possible to considerably improve the positioning of the deflection coil 1 on the cone 2 of the tube. Stock keeping is also considerably simplified by the fact that only a standardized wedge model is used.

Claims (4)

1. Cale de fixation pour bobines de déviation qui se place entre les bobines et la partie conique du tube, en particulier, d'un tube à rayons cathodiques pour la télévision en couleurs, caractérisée en ce que la cale (3) est une cale unitaire et en ce que sa hauteur diminue d'une valeur maximale dans la région de transition avec la patte de fixation (6) d'environ 60 fois et en ce que l'ouverture (4) pour l'injection de l'adhésif a été décalée dans la partie libre du commencement du profil.1. Fixing block for deflection coils which is placed between the coils and the conical part of the tube, in particular of a cathode ray tube for color television, characterized in that the wedge (3) is a wedge unitary and in that its height decreases by a maximum value in the transition region with the fixing lug (6) by about 60 times and in that the opening (4) for the injection of the adhesive has been offset in the free part of the beginning of the profile. 2. Cale de fixation selon la revendication 1, caractérisé en ce que l'épaisseur de la cale (3) diminue, à partir de 12 mm, à un maximum de 0,2 mm.2. Fixing block according to claim 1, characterized in that the thickness of the block (3) decreases, from 12 mm, to a maximum of 0.2 mm. 3. Cale de fixation selon l'une quelconque des revendications précédentes, caractérisée en ce que la patte (6) est pourvue d'une bande adhésive double face.3. Fixing block according to any one of the preceding claims, characterized in that the tab (6) is provided with a double-sided adhesive strip. 4. Cale de fixation selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est faite d'un caoutchouc naturel ou synthétique et en ce qu'elle est fixée au moyen d'un adhésif aux silicones à un seul composant (8) et, le cas échéant, en outre, au moyen d'un adhésif (7) s'appliquant à chaud.4. Fixing block according to any one of the preceding claims, characterized in that it is made of natural or synthetic rubber and in that it is fixed by means of a one-component silicone adhesive ( 8) and, if necessary, in addition, by means of an adhesive (7) applying hot.
EP82401397A 1981-08-03 1982-07-27 Fastening wedge for a television tube deflection assembly Expired EP0072291B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3130697 1981-08-03
DE19813130697 DE3130697A1 (en) 1981-08-03 1981-08-03 FIXING WEDGE

Publications (3)

Publication Number Publication Date
EP0072291A2 true EP0072291A2 (en) 1983-02-16
EP0072291A3 EP0072291A3 (en) 1983-12-21
EP0072291B1 EP0072291B1 (en) 1987-10-28

Family

ID=6138484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401397A Expired EP0072291B1 (en) 1981-08-03 1982-07-27 Fastening wedge for a television tube deflection assembly

Country Status (5)

Country Link
EP (1) EP0072291B1 (en)
JP (1) JPS5832343A (en)
DE (2) DE3130697A1 (en)
ES (1) ES274653Y (en)
PT (1) PT75346A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939447A (en) * 1975-01-07 1976-02-17 Rca Corporation Spring mount for a cathode ray tube yoke
US4006301A (en) * 1976-01-16 1977-02-01 Zenith Radio Corporation Yoke adjusting apparatus for a color TV picture tube
GB1538025A (en) * 1976-04-19 1979-01-10 Hitachi Ltd Colour picture tube device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3939447A (en) * 1975-01-07 1976-02-17 Rca Corporation Spring mount for a cathode ray tube yoke
US4006301A (en) * 1976-01-16 1977-02-01 Zenith Radio Corporation Yoke adjusting apparatus for a color TV picture tube
GB1538025A (en) * 1976-04-19 1979-01-10 Hitachi Ltd Colour picture tube device

Also Published As

Publication number Publication date
EP0072291A3 (en) 1983-12-21
EP0072291B1 (en) 1987-10-28
DE3277559D1 (en) 1987-12-03
PT75346A (en) 1982-08-01
JPS5832343A (en) 1983-02-25
ES274653U (en) 1984-07-16
DE3130697A1 (en) 1983-06-09
ES274653Y (en) 1986-05-16

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