EP0794551B1 - Electron beam deflection system for a cathode ray tube - Google Patents
Electron beam deflection system for a cathode ray tube Download PDFInfo
- Publication number
- EP0794551B1 EP0794551B1 EP96400495A EP96400495A EP0794551B1 EP 0794551 B1 EP0794551 B1 EP 0794551B1 EP 96400495 A EP96400495 A EP 96400495A EP 96400495 A EP96400495 A EP 96400495A EP 0794551 B1 EP0794551 B1 EP 0794551B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coils
- separator
- deflector according
- saddle
- deflector
- 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.)
- Expired - Lifetime
Links
- 238000010894 electron beam technology Methods 0.000 title description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 208000031968 Cadaver Diseases 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
- H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
-
- 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 invention relates to a system for deflecting electron beams for cathode ray tubes, and more particularly to the device ensuring both the support of the deflection coils and the mechanical rigidity of the system.
- Such a deflection system also called a deflector, generally consists of a pair of vertical deflection coils, a pair of horizontal deflection coils and a ring of substantially frustoconical shape made of magnetic material intended to concentrate the flow created. by the coils.
- the two pairs of deflection coils are electrically insulated by a separator, generally made of plastic, which also makes it possible to improve the mechanical rigidity of the deflection device, to fix the coils relative to each other and to adjust the together on the neck of the tube.
- the separator consists of a main body, in one or more parts, substantially in the form of a funnel, and a flexible rear part conforming to the neck of the tube and intended to fix the position of the deflection system along the longitudinal axis. tube; this fixing is generally effected by means of a clamping collar placed above the flexible rear part.
- a deviation system is disclosed in the approach of patent EP 690471.
- the deflection coils are installed on the separator and adjusted in position, with respect to each other so as to generate the deflection fields, vertical and horizontal, in accordance with the tube to cathode rays that the deflector is intended to equip.
- the coils After positioning, the coils, in a subsequent step must be fixed definitively, for example by gluing to the body of the separator.
- the main problem consists in maintaining the relative positioning of the coils on the separator between the moment when the adjustment is made and the moment when the coils are definitively fixed on the separator.
- FIG. 1 shows a deflection system also called a deflector, comprising a pair of horizontal deflection coils 3 in the form of a saddle, a pair of vertical deflection coils 4 also in the form of a saddle, isolated from the previous one by a separator 2; a ring of ferromagnetic material 5 is placed around the coils 3 and 4.
- the assembly is arranged on the neck 8 of a cathode ray tube 6, of main axis Z, in order to deflect the electron beams coming from the barrel 7, along the axes X and Y, so that they explore the screen surface 9 of the tube.
- the deflection coils are arranged on the body of the separator and their relative positioning is precisely adjusted so as to generate deflection fields of desired conformation. Once this adjustment has been made, the coils must remain in place until the subsequent stage of final immobilization on the separator, a stage generally carried out by bonding the coils to the body of the separator.
- Figures 2 and 3 show how are maintained, in the prior art, the vertical deflection coils 4 on the separator 2.
- the front 10 of the coils is inserted in the housing formed by the wall of the separator, at least one lug 13 holding the front of the coils and their position along the Z axis, while a tooth 12 ensures the position along the Y axis of the part 10; the rear 11 of the coils is then adjusted against the rear of the substantially cylindrical separator, the whole is then held in position by surrounding the parts 11 with an adhesive 15.
- the two coils are separated by an edge 14 extending in the YZ plan.
- the adjustment of the position of the coils before the bonding phase on the body of the separator can be modified, when manipulating the pre-adjusted deflector, either by the rotation of the front part 11 around the Z axis according to an amplitude 16 depending shapes of the coils and tolerances allowed, ie displacements of the rear 11 in the XY plane, the manufacturing tolerances leaving a gap 17 between the internal surface of 11 and the surface of the separator.
- the deflector according to the invention has a separator whose particularity is to have on at least one of its surfaces the means for positioning and holding a pair of deflection coil, these means ensuring the maintenance of the adjustment. initial coils until the bonding phase of said coils on the separator.
- These means are produced by molding the material of the separator during the production of the latter and therefore do not require the use of adhesive or additional part.
- the blocking of the front part in rotation about the Z axis and in position along the Y axis is ensured by at least two lugs 20 arranged on the surface of the separator 28 such that they each come at at least one point 21 into contact with the coils in the internal window 22 free of conductor.
- the blocking of the front part of each coil is ensured by at least one edge extending over the surface of the separator, so that its ends come into contact with the coil in the window free of conductor of said coil.
- the final design of the deflection coils goes through iteration steps, for example to perfectly adapt the convergence of the electron beams on the screen of the tube; to introduce these modifications, if necessary, without having to modify the mold for manufacturing the separators, an extremely expensive mold to manufacture, it is customary to modify the geometric distribution of the conductors, which involves modifying the shape of the internal window of the coil.
- the means for locking in rotation of the front of the coils are preferably arranged on the surface of the separator so as to come into contact with the coils in the part of the window rather situated towards the front of the separator: thus the designer will be able to introduce changes in the conformation of the fields without it being necessary to move the means of blocking 20 on the body of the separator and therefore having to make a new mold to manufacture said separator.
- the edge 14 for separating the vertical deflection coils is such that its rear part 30 is shaped so as to produce a substantially planar wall 33, parallel to the plane XZ.
- the end 35 of the wall is bevelled so as to favor the insertion of the rear part 30 into the space provided between the wall 33 and the surface of the separator.
- This wall is located at a distance 32 from the surface of the separator, a distance substantially equal to the thickness of the coil which is intended to be housed below.
- This wall may extend on either side of each of the edges 14.
- the rear part of the edge 14 is shaped so as to produce a curved wall 33 substantially parallel to the cylindrical surface of the separator, the curved shape of these walls being adapted to avoid that , by reaction to the stress, the coils do not come out during manipulation of the housing in which they are inserted
- the embodiments described above are not limiting; thus several parts of each of the edges 14 can be shaped to form several walls 33; similarly the means described for positioning and maintaining vertical deflection coils are similarly adapted to horizontal deflection coils provided that they are placed on the internal surface of the separator.
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Description
L'invention se rapporte à un système de déviation des faisceaux électroniques pour tube à rayons cathodiques, et plus particulièrement au dispositif assurant à la fois le support des bobines de déviation et la rigidité mécanique du système.The invention relates to a system for deflecting electron beams for cathode ray tubes, and more particularly to the device ensuring both the support of the deflection coils and the mechanical rigidity of the system.
Un tel système de déviation, encore appelé déviateur, est généralement constitué d'une paire de bobines de déviation verticale, d'une paire de bobines de déviation horizontale et d'un anneau de forme sensiblement tronconique en matériau magnétique destiné à concentrer le flux créé par les bobines. Les deux paires de bobines de déviation sont isolées électriquement par un séparateur, généralement en matière plastique, lequel permet en outre d'améliorer la rigidité mécanique du dispositif de déviation, de fixer les bobines les unes par rapport aux autres et d'ajuster l'ensemble sur le col du tube. Le séparateur est constitué d'un corps principal, en une ou plusieurs parties, sensiblement en forme d'entonnoir, et d'une partie arrière flexible épousant le col du tube et destinée à fixer la position du système de déviation selon l'axe longitudinal du tube; cette fixation est généralement opérée grâce à un collier de serrage disposé au-dessus de la partie arrière flexible. Un tel système de déviation est divulgué dans la démarche du brevet EP 690471.Such a deflection system, also called a deflector, generally consists of a pair of vertical deflection coils, a pair of horizontal deflection coils and a ring of substantially frustoconical shape made of magnetic material intended to concentrate the flow created. by the coils. The two pairs of deflection coils are electrically insulated by a separator, generally made of plastic, which also makes it possible to improve the mechanical rigidity of the deflection device, to fix the coils relative to each other and to adjust the together on the neck of the tube. The separator consists of a main body, in one or more parts, substantially in the form of a funnel, and a flexible rear part conforming to the neck of the tube and intended to fix the position of the deflection system along the longitudinal axis. tube; this fixing is generally effected by means of a clamping collar placed above the flexible rear part. Such a deviation system is disclosed in the approach of patent EP 690471.
Lors de l'assemblage des éléments constitutifs du déviateur, les bobines de déviation sont installées sur le séparateur et réglées en position , les unes par rapport aux autres de manière à engendrer les champs de déviation, vertical et horizontal, en conformité avec le tube à rayons cathodiques que le déviateur est destiné à équiper.During the assembly of the constitutive elements of the deflector, the deflection coils are installed on the separator and adjusted in position, with respect to each other so as to generate the deflection fields, vertical and horizontal, in accordance with the tube to cathode rays that the deflector is intended to equip.
Après positionnement, les bobines , dans une étape ultérieure doivent être fixées de manière définitive, par exemple par collage sur le corps du séparateur. Le principal problème consiste à maintenir le positionnement relatif des bobines sur le séparateur entre l'instant où le réglage est effectué et le moment où les bobines sont définitivement fixées sur le séparateur.After positioning, the coils, in a subsequent step must be fixed definitively, for example by gluing to the body of the separator. The main problem consists in maintaining the relative positioning of the coils on the separator between the moment when the adjustment is made and the moment when the coils are definitively fixed on the separator.
Dans le cas, par exemple de bobines de déviation verticale en forme de selle, il est connu de fixer l'avant des bobines par clipsage sur l'avant du séparateur et de maintenir le positionnement des parties arrières à l'aide d'un adhésif venant entourer les dites parties arrières. Ce procédé engendre deux problèmes
- Le clipsage sur la partie avant de la bobine ne garantie pas un absolu maintien en rotation de cette partie avant.
- Compte tenu des tolérances de fabrication, la surface interne de la partie arrière de chaque bobine a un rayon légèrement plus grand que la surface externe du séparateur. Le maintien à l'aide d'un adhésif ne garantit pas que le réglage initial va être conservé, d'où une perte de précision par rapport à ce réglage et une disparité dans les caractéristiques des déviateurs fabriqués selon cette méthode.
- The clipping on the front part of the coil does not guarantee an absolute maintenance in rotation of this front part.
- Given the manufacturing tolerances, the internal surface of the rear part of each coil has a radius slightly larger than the external surface of the separator. Maintaining with an adhesive does not guarantee that the initial setting will be retained, resulting in a loss of precision compared to this setting and a disparity in the characteristics of the deflectors manufactured according to this method.
L'invention sera mieux comprise à l'aide des dessins suivants:
- la figure 1 représente une coupe longitudinale d'un tube à rayons cathodiques sur le col duquel est installé un dispositif de déviation des faisceaux électroniques
- la figure 2 est une vue de l'arrière d'un déviateur selon l'état de la technique
- la figure 3 est une coupe transversale de la partie avant du séparateur montant un exemple de dispositif de maintien de la partie avant d'une bobine en forme de selle selon l'état de la technique
- la figure 4 représente vu de l'arrière un déviateur selon l'invention
- la figure 5 est une vue de coté d'un séparateur destiné à un déviateur selon l'invention
- la figure 6 est une vue en détail de la partie arrière sensiblement annulaire du séparateur destiné à un déviateur selon l'invention.
- la figure 7 est une vue en détail de la partie arrière sensiblement annulaire du séparateur destiné à un déviateur selon un mode de réalisation alternatif de l'invention.
- Figure 1 shows a longitudinal section of a cathode ray tube on the neck of which is installed a device for deflecting the electron beams
- Figure 2 is a rear view of a deflector according to the state of the art
- Figure 3 is a cross section of the front part of the separator mounting an example of a device for holding the front part of a saddle-shaped coil according to the prior art
- FIG. 4 represents seen from the rear a diverter according to the invention
- Figure 5 is a side view of a separator for a deflector according to the invention
- Figure 6 is a detail view of the substantially annular rear part of the separator for a diverter according to the invention.
- Figure 7 is a detailed view of the substantially annular rear portion of the separator for a diverter according to an alternative embodiment of the invention.
La figure 1 représente un système de déviation encore appelé déviateur, comprenant une paire de bobines de déviation horizontale 3 en forme de selle, une paire de bobines de déviation verticale 4 également en forme de selle, isolée de la précédente par un séparateur 2; un anneau en matériau ferromagnétique 5 est disposé autour des bobines 3 et 4 . L'ensemble est disposé sur le col 8 d'un tube à rayons cathodiques 6 , d'axe principal Z, afin de dévier les faisceaux d'électrons issus du canon 7, selon les axes X et Y , pour qu'ils explorent la surface écran 9 du tube.FIG. 1 shows a deflection system also called a deflector, comprising a pair of horizontal deflection coils 3 in the form of a saddle, a pair of vertical deflection coils 4 also in the form of a saddle, isolated from the previous one by a separator 2; a ring of ferromagnetic material 5 is placed around the coils 3 and 4. The assembly is arranged on the neck 8 of a cathode ray tube 6, of main axis Z, in order to deflect the electron beams coming from the barrel 7, along the axes X and Y, so that they explore the screen surface 9 of the tube.
Lors de l'assemblage des éléments constitutifs du déviateur les bobines de déviation sont disposées sur le corps du séparateur et leur positionnement relatif est réglé précisément de manière à engendrer des champs de déviation de conformation désirée. Une fois ce réglage accompli, les bobines doivent rester en place jusqu'à l'étape ultérieure d'immobilisation finale sur le séparateur, étape généralement réalisée par collage des bobines sur le corps du séparateur.During the assembly of the constituent elements of the deflector the deflection coils are arranged on the body of the separator and their relative positioning is precisely adjusted so as to generate deflection fields of desired conformation. Once this adjustment has been made, the coils must remain in place until the subsequent stage of final immobilization on the separator, a stage generally carried out by bonding the coils to the body of the separator.
Les figures 2 et 3 montrent comment sont maintenues, dans l'état de la technique , les bobines de déviation verticales 4 sur le séparateur 2. L'avant 10 des bobines est inséré dans le logement constitué par la paroi du séparateur, au moins un ergot 13 maintenant l'avant des bobines et leur position selon l'axe Z, alors qu'une dent 12 assure la position selon l'axe Y de la partie 10; l'arrière 11 des bobines est ensuite réglé contre l'arrière du séparateur de forme sensiblement cylindrique le tout est ensuite maintenu en position en entourant les parties 11 par un adhésif 15. Les deux bobines sont séparées par une arêtes 14 s'étendant dans le plan YZ. Le réglage de la position des bobines avant la phase de collage sur le corps du séparateur peut se modifier , lors des manipulations du déviateur pré-réglé, soit par la rotation de la partie avant 11 autour de l'axe Z suivant un amplitude 16 dépendant des formes des bobines et des tolérances admises, soit des déplacements de l'arrière 11 dans le plan XY, les tolérances de fabrication laissant un interstice 17 entre la surface interne de 11 et la surface du séparateur.Figures 2 and 3 show how are maintained, in the prior art, the vertical deflection coils 4 on the separator 2. The front 10 of the coils is inserted in the housing formed by the wall of the separator, at least one lug 13 holding the front of the coils and their position along the Z axis, while a tooth 12 ensures the position along the Y axis of the part 10; the rear 11 of the coils is then adjusted against the rear of the substantially cylindrical separator, the whole is then held in position by surrounding the parts 11 with an adhesive 15. The two coils are separated by an edge 14 extending in the YZ plan. The adjustment of the position of the coils before the bonding phase on the body of the separator can be modified, when manipulating the pre-adjusted deflector, either by the rotation of the front part 11 around the Z axis according to an amplitude 16 depending shapes of the coils and tolerances allowed, ie displacements of the rear 11 in the XY plane, the manufacturing tolerances leaving a gap 17 between the internal surface of 11 and the surface of the separator.
Les deux problèmes précédents peuvent par ailleurs se combiner pour modifier le réglage initial de la position des bobines .The two previous problems can also be combined to modify the initial setting of the position of the coils.
Pour éviter ces déplacements , le déviateur selon l'invention possède un séparateur dont la particularité est de posséder sur au moins une de ses surfaces les moyens de positionnement et de maintien d'une paire de bobine de déviation, ces moyens assurant le maintien du réglage initial des bobines jusqu'à la phase de collage des dites bobines sur le séparateur. Ces moyens sont réalisés par moulage de la matière du séparateur lors de la réalisation de ce dernier et ne nécessitent donc pas l'utilisation d'adhésif ou de pièce supplémentaires .To avoid these displacements, the deflector according to the invention has a separator whose particularity is to have on at least one of its surfaces the means for positioning and holding a pair of deflection coil, these means ensuring the maintenance of the adjustment. initial coils until the bonding phase of said coils on the separator. These means are produced by molding the material of the separator during the production of the latter and therefore do not require the use of adhesive or additional part.
Dans un mode de réalisation tel qu'illustré par la figure 4, le blocage de la partie avant en rotation autour de l'axe Z et en position selon l'axe Y est assuré par au moins deux ergots 20 disposés sur la surface du séparateur 28 de telle manière qu'ils viennent chacun en au moins un point 21 au contact des bobines dans la fenêtre interne 22 libre de conducteur. Dans un autre mode de réalisation non représenté, le blocage de la partie avant de chaque bobine est assuré par au moins une arête s'étendant sur la surface du séparateur, de manière à ce que ses extrémités viennent au contact de la bobine dans la fenêtre libre de conducteur de la dite bobine.In an embodiment as illustrated in FIG. 4, the blocking of the front part in rotation about the Z axis and in position along the Y axis is ensured by at least two lugs 20 arranged on the surface of the separator 28 such that they each come at at least one point 21 into contact with the coils in the internal window 22 free of conductor. In another embodiment not shown, the blocking of the front part of each coil is ensured by at least one edge extending over the surface of the separator, so that its ends come into contact with the coil in the window free of conductor of said coil.
La conception définitive des bobines de déviation passe par des étapes d'itération, par exemple pour parfaitement adapter la convergence des faisceaux d'électrons sur l'écran du tube; pour introduire ces modifications, si nécessaire, sans avoir à modifier le moule de fabrication des séparateurs, moule extrêmement onéreux à fabriquer, il est d'usage de modifier la répartition géométrique des conducteurs, ce qui entraîne à modifier la forme de la fenêtre interne de la bobine.The final design of the deflection coils goes through iteration steps, for example to perfectly adapt the convergence of the electron beams on the screen of the tube; to introduce these modifications, if necessary, without having to modify the mold for manufacturing the separators, an extremely expensive mold to manufacture, it is customary to modify the geometric distribution of the conductors, which involves modifying the shape of the internal window of the coil.
On a remarqué que les opérations d'itération pouvait entraîner des modifications géométriques des fenêtre internes des bobines plutôt situées dans leur partie milieu ou arrière sans qu'il soit nécessaire de modifier la partie située à l'avant du séparateur, c'est-à-dire sa partie la plus évasée.It was noted that the iteration operations could lead to geometric modifications of the internal window of the coils rather located in their middle or rear part without it being necessary to modify the part located at the front of the separator, i.e. - say its most flared part.
Il en résulte que les moyens de blocage en rotation de l'avant des bobines sont de manière préférentielle disposés sur la surface du séparateur de manière à venir au contact des bobines dans la partie de la fenêtre plutôt située vers l'avant du séparateur : ainsi le concepteur pourra introduire des modification de conformation des champs sans qu'il soit nécessaire de déplacer les moyens de blocage 20 sur le corps du séparateur et donc d'avoir à réaliser un nouveau moule pour fabriquer le dit séparateur..As a result, the means for locking in rotation of the front of the coils are preferably arranged on the surface of the separator so as to come into contact with the coils in the part of the window rather situated towards the front of the separator: thus the designer will be able to introduce changes in the conformation of the fields without it being necessary to move the means of blocking 20 on the body of the separator and therefore having to make a new mold to manufacture said separator.
Pour immobiliser les parties des bobines qui sont situées sur la partie arrière sensiblement cylindrique du séparateur des logement sont réalisés par moulage de manière à ce que les bords des bobines viennent s'engager sous une légère contrainte dans ces logements.To immobilize the parts of the coils which are located on the substantially cylindrical rear part of the housing separator, are produced by molding so that the edges of the coils engage under slight stress in these housings.
Dans l'exemple illustré par les figures 5 et 6, l'arête 14 de séparation des bobines de déviation verticale est telle que sa partie arrière 30 est conformée de manière à réaliser une paroi sensiblement plane 33, parallèle au plan XZ. L'extrémité 35 de la paroi est biseautée de manière à favoriser l'insertion de la partie arrière 30 dans l'espace aménagé entre la paroi 33 et la surface du séparateur. Cette paroi est située à une distance 32 de la surface du séparateur, distance sensiblement égale à l'épaisseur de la bobine qui est destinée à venir se loger dessous.In the example illustrated by FIGS. 5 and 6, the edge 14 for separating the vertical deflection coils is such that its rear part 30 is shaped so as to produce a substantially planar wall 33, parallel to the plane XZ. The end 35 of the wall is bevelled so as to favor the insertion of the rear part 30 into the space provided between the wall 33 and the surface of the separator. This wall is located at a distance 32 from the surface of the separator, a distance substantially equal to the thickness of the coil which is intended to be housed below.
Cette paroi peut s'étendre de part et d'autre de chacune des arêtes 14.This wall may extend on either side of each of the edges 14.
De cette façon, l'arrière 11 des bobines 4 va venir se loger en contrainte sous ces parois 33 qui les maintiendront dans leur position selon les axes X et Y jusqu'à l'étape de collage .In this way, the rear 11 of the coils 4 will be housed under stress under these walls 33 which will keep them in their position along the axes X and Y until the bonding step.
Dans un autre mode de réalisation illustré par la figure 7, la partie arrière de l'arête 14 est conformée de manière à réaliser une paroi courbe 33 sensiblement parallèle à la surface cylindrique du séparateur, la forme courbe de ces parois étant adaptées pour éviter que, par réaction à la contrainte, les bobines ne sortent en cours de manipulation du logement dans lequel elles sont insérées Les modes de réalisation décrit ci-dessus ne sont pas limitatifs; ainsi plusieurs parties de chacune des arêtes 14 peuvent être conformées pour former plusieurs parois 33; de même les moyens décrits pour positionner et maintenir des bobines de déviation verticales sont de la même façon adaptés à des bobines de déviation horizontales à condition de les disposer sur la surface interne du séparateur.In another embodiment illustrated by FIG. 7, the rear part of the edge 14 is shaped so as to produce a curved wall 33 substantially parallel to the cylindrical surface of the separator, the curved shape of these walls being adapted to avoid that , by reaction to the stress, the coils do not come out during manipulation of the housing in which they are inserted The embodiments described above are not limiting; thus several parts of each of the edges 14 can be shaped to form several walls 33; similarly the means described for positioning and maintaining vertical deflection coils are similarly adapted to horizontal deflection coils provided that they are placed on the internal surface of the separator.
Claims (11)
- Deflector for a cathode-ray tube, which comprises a pair of vertical deflection coils, a pair of horizontal deflection coils, at least one of these two pairs being saddle-shaped, a rigid separator insulating the pairs of deflection coils from each other, and a ring made of ferromagnetic material of substantially frustoconical shape arranged above at least part of the deflection coils, characterized in that one of the pairs of saddle-shaped deflection coils is applied against the body of the separator and is held in place, both on its front part and on its rear part, using means for positioning the coils and for holding them in place which form integral parts of the body of the separator.
- Deflector according to Claim 1, characterized in that means for positioning the coils and for holding them in place are produced during the moulding of the body of the separator.
- Deflector according to Claim 2, characterized in that one of the means for positioning a saddle-shaped deflection coil and for holding it in place is formed by at least two pegs intended to extend into the conductor-free internal window of the coil.
- Deflector according to Claim 2, characterized in that one of the means for positioning a saddle-shaped deflection coil and for holding it in place is formed by at least one edge intended to extend into the conductor-free internal window of the coil.
- Deflector according to one of the preceding claims, characterized in that means for positioning the saddle-shaped deflection coils and for holding them in place are housings which partly cover the said coils.
- Deflector according to Claim 5, characterized in that housings partly cover the front and rear of the said coils.
- Deflector according to either of Claims 5 and 6, characterized in that at least one of the housings is produced by moulding part of the edges which separate one of the coils of the same pair from the other.
- Deflector according to Claim 7, characterized in that the moulded part partially covers the two deflection coils of the same pair.
- Deflector according to Claim 7 or 8, characterized in that the moulded part forms a wall having a bevelled end.
- Deflector according to one of Claims 7 to 9, characterized in that the moulded part forms a curved wall.
- Cathode-ray tube equipped with a deflector in accordance with any one of the preceding claims.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96400495A EP0794551B1 (en) | 1996-03-08 | 1996-03-08 | Electron beam deflection system for a cathode ray tube |
DE69615334T DE69615334T2 (en) | 1996-03-08 | 1996-03-08 | Electron beam deflection system for a cathode ray tube |
US08/807,844 US5818159A (en) | 1996-03-08 | 1997-02-26 | Electron beam deflection system for a cathode ray tube |
SG9700674A SG97754A1 (en) | 1996-03-08 | 1997-03-06 | Electron-beam deflection system for a cathode-ray tube |
KR1019970007345A KR100464705B1 (en) | 1996-03-08 | 1997-03-06 | Electron-beam deflection system for a cathode-ray tube |
JP9068970A JPH103865A (en) | 1996-03-08 | 1997-03-07 | Deflection yoke for cathode-ray tube |
MXPA/A/1997/001774A MXPA97001774A (en) | 1996-03-08 | 1997-03-07 | Electron beam deviation system for a catodi ray tube |
MYPI97000958A MY113644A (en) | 1996-03-08 | 1997-03-07 | Electron-beam deflection system for a cathode-ray tube |
CNB971116334A CN1148779C (en) | 1996-03-08 | 1997-03-08 | Electron-bean deflection system for cathode-ray tube |
HK98103094A HK1003919A1 (en) | 1996-03-08 | 1998-04-15 | Electron-beam deflection system for a cathode-ray tube |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96400495A EP0794551B1 (en) | 1996-03-08 | 1996-03-08 | Electron beam deflection system for a cathode ray tube |
US08/807,844 US5818159A (en) | 1996-03-08 | 1997-02-26 | Electron beam deflection system for a cathode ray tube |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0794551A1 EP0794551A1 (en) | 1997-09-10 |
EP0794551B1 true EP0794551B1 (en) | 2001-09-19 |
Family
ID=26144022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96400495A Expired - Lifetime EP0794551B1 (en) | 1996-03-08 | 1996-03-08 | Electron beam deflection system for a cathode ray tube |
Country Status (3)
Country | Link |
---|---|
US (1) | US5818159A (en) |
EP (1) | EP0794551B1 (en) |
JP (1) | JPH103865A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6278348B1 (en) * | 1999-11-19 | 2001-08-21 | Sony Corporation | Deflection yoke |
US6624560B2 (en) | 2001-05-22 | 2003-09-23 | Sony Corporation | Deflection yoke |
KR20040010112A (en) * | 2002-07-22 | 2004-01-31 | 삼성전기주식회사 | Deflection yoke with v-coil fixing structure |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS594823B2 (en) * | 1976-06-01 | 1984-02-01 | ソニー株式会社 | deflection yoke |
US5519371A (en) * | 1993-12-22 | 1996-05-21 | Sony Corporation | Deflection apparatus |
ATE173561T1 (en) * | 1994-07-01 | 1998-12-15 | Thomson Tubes & Displays | ELECTRON BEAM DEFLECTION SYSTEM FOR CATHODE RAY TUBES |
ATE163107T1 (en) * | 1994-07-01 | 1998-02-15 | Thomson Tubes & Displays | ELECTRON BEAM DEFLECTION SYSTEM FOR CATHODE RAY TUBES |
-
1996
- 1996-03-08 EP EP96400495A patent/EP0794551B1/en not_active Expired - Lifetime
-
1997
- 1997-02-26 US US08/807,844 patent/US5818159A/en not_active Expired - Fee Related
- 1997-03-07 JP JP9068970A patent/JPH103865A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US5818159A (en) | 1998-10-06 |
EP0794551A1 (en) | 1997-09-10 |
JPH103865A (en) | 1998-01-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0944101B1 (en) | Bus-bar device and electrical feed-through | |
FR2613884A1 (en) | ELECTRIC MACHINE COMPRISING A PACKET OF SHEETS SUPPORTING A WINDING, AND METHOD FOR THE PRODUCTION THEREOF | |
EP0271413A1 (en) | Insulation displacement connector for a monoconductor cable | |
EP0794551B1 (en) | Electron beam deflection system for a cathode ray tube | |
EP0690468B1 (en) | Electron beam deflection system for cathode ray tubes | |
EP0617217B1 (en) | Pipe, in particular for a motor vehicle | |
EP0690470B1 (en) | Electron beam deflection system for cathode ray tubes | |
EP0690471B1 (en) | Electron beam deflection system for cathode ray tubes | |
FR2545980A1 (en) | MEANS FOR CORRECTING CORRECTION OF THE FRAME BY MODIFYING EXTERNAL FIELDS OF THE WIND DEFLECTOR OF THE TELEVISION | |
EP0821388B1 (en) | Device for fixing a deflector on the neck of a cathode ray tube | |
FR2623340A1 (en) | REINFORCED TETINE FOR IGNITION CABLE | |
FR2757681A1 (en) | DEVIATION SYSTEM FOR CATHODE RAY TUBES ADAPTED TO CONTROL THE NORTH / SOUTH GEOMETRY OF IMAGE | |
EP0739057A1 (en) | Arrangement for connecting a cable shield | |
FR2791467A1 (en) | ELECTRONIC BEAM DEVIATION SYSTEM FOR CATHODIC RADIUS TUBE | |
EP0107987B2 (en) | Transforming method of a deflection unit permitting its use in autoconvergent imaging tubes of different dimensions, and deflection unit so obtained | |
FR2565395A1 (en) | DEVICE FOR RAPID ASSEMBLY OF A PLATINUM ON A CHASSIS, ESPECIALLY FOR A RECORDER | |
FR2623021A1 (en) | Earthing device for receiver or transmitter antenna of electromagnetic waves, especially for car radio and antenna equipped with such an earthing device | |
FR2689678A1 (en) | Method of positioning a deflector on the neck of a cathode ray tube and device implementing the method | |
EP0074891B1 (en) | Apparatus for placing and fixing the static convergence correction unit to the neck of a colour television tube | |
CA1227326A (en) | Process for making a transformer, transformer thus made, and wheel for winding it coils | |
EP1103094B1 (en) | Device for protecting from shield interruption an electric cable provided with optical fibres arranged in metal tubes | |
EP0656246B1 (en) | Method of crimping a crimping ring placed axially behind an obstacle und device therefor | |
FR2797993A1 (en) | CATHODIC RAY TUBE DEFLECTION UNIT WITH SADDLE-SHAPED VERTICAL DEFLECTION COILS | |
FR2729010A1 (en) | ANTENNA FOR A MOTOR VEHICLE CAPABLE OF RECEIVING AN ACTIVE IMPEDANCE ADAPTER AND ASSEMBLY ACTIVE IMPEDANCE ADAPTER FOR SUCH ANTENNA | |
FR2778016A1 (en) | DEFLECTION UNIT FOR COLOR CATHODE RAY TUBES COMPRISING ASYMMETRIC COILS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THOMSON TUBES & DISPLAYS S.A. |
|
17P | Request for examination filed |
Effective date: 19980309 |
|
17Q | First examination report despatched |
Effective date: 19980403 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
REF | Corresponds to: |
Ref document number: 69615334 Country of ref document: DE Date of ref document: 20011025 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20011201 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090226 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20090319 Year of fee payment: 14 Ref country code: DE Payment date: 20090325 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090324 Year of fee payment: 14 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100308 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20101130 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100331 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100308 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100308 |