EP0821388B1 - Dispositif de fixation d'un déviateur sur le col d'un tube à rayons cathodiques - Google Patents
Dispositif de fixation d'un déviateur sur le col d'un tube à rayons cathodiques Download PDFInfo
- Publication number
- EP0821388B1 EP0821388B1 EP97401693A EP97401693A EP0821388B1 EP 0821388 B1 EP0821388 B1 EP 0821388B1 EP 97401693 A EP97401693 A EP 97401693A EP 97401693 A EP97401693 A EP 97401693A EP 0821388 B1 EP0821388 B1 EP 0821388B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separator
- tube
- neck
- coils
- deflection coils
- 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
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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 invention relates to a beam deflection system electronic devices for cathode ray tube, and more particularly device ensuring the immobilization of said system on the neck of the tube.
- Such a deflection system also called deviator, is generally consisting of a pair of vertical deflection coils, a pair of horizontal deflection coils and a substantially shaped ring frustoconical magnetic material for concentrating the flow created by the coils.
- Horizontal deflection coils are usually saddle shape; the vertical deflection coils can be shaped saddle or torus-shaped and in the latter case are wrapped around of the ring made of magnetic material.
- the two pairs of deflection coils are electrically isolated by a separator, generally of plastic material, which furthermore allows to improve the mechanical rigidity of the deflection device, to position the coils relative to each other and adjust the set on the neck of the tube.
- the separator consists of a main body, in one or several parts, substantially funnel-shaped, and partly flexible back that fits the neck of the tube and is intended to fix the position of the deflection system along the longitudinal axis of the tube; this fixation is usually operated by means of a fixation collar arranged above the flexible rear part.
- the coils deflectors are installed on the separator and adjusted in position, the to each other so as to generate the fields of deflection, vertical and horizontal, in accordance with the ray tube cathodic that the deflector is intended to equip.
- the deviator is then placed on the neck of the tube, its position on the main axis Z of the tube is set so that, in the absence of a deflection field, the three electron beams from the electron gun converge on the screen of the said tube.
- the deviator is kept in this position usually thanks to a clamp on the back ring of the separator, part designed to have the necessary flexibility to allow the introduction of the deflector and its subsequent tightening on the neck of the tube.
- Such a deflection system is described in EP 0 690 470.
- this design requires leaving the outer surface free ring of the separator, at the rear end of the deflection coils, surface on which will be arranged the clamping collar ensuring the maintenance definitive in position along the Z axis of the deflector.
- the main defect that induces this structure is the final length that must present the separator and therefore the deviator to integrate the support functions of deflection and fixing coils on the neck of the tube.
- the length of deviator influences the length of the neck of the tube that will support it. That is even more sensitive for the deviators including the deflection coils vertical are saddle-shaped, which extend along the Z axis on a length greater than that of the toroidal coils.
- the deflector comprises a pair of vertical deflection coils, a pair of deflection coils horizontal, at least one of these two pairs being saddle-shaped, a rigid separator insulating from each other the pairs of coils of deflection, a ferromagnetic material ring of substantially truncated cone disposed over at least a portion of the coils of deflection and a fastening element for securing to the separator to fix the back of the deflator on the neck of the tube, the fixing element comprising a flexible part which extends between the separator and the neck of the tube, in a region partly situated under the vertical deflection coils, characterized in that the flexible part is in the form of a substantially frustoconical ring ( 22) and cooperates with a shoulder (20) disposed on the rear inner surface of the separator (2) so as to fix the separator on the neck of the tube by the hoop effect.
- FIG. 1 represents a deflection system also called deflector, comprising a pair of horizontal deflection coils 3 in the form of saddle, a pair of vertical deflection coils 4 also shaped seat, isolated from the previous by a separator 2; a ring in ferromagnetic material 5 is disposed around the coils 3 and 4.
- the assembly is disposed on the neck 8 of a cathode ray tube 6, Z main axis, to deflect the electron beams from the barrel 7, along the X and Y axes, so that they explore the screen surface 9 of the tube.
- the coils of deflection are arranged on the separator body and their relative positioning is precisely tuned to generate deflection fields of desired conformation. Once this setting accomplished, the reels must remain in place until the later stage final immobilization on the separator, a step generally carried out by gluing of the coils on the separator body.
- the deflector is then installed on the neck 8 of the tube in a position precise to adjust the position of horizontal deflection centers and vertical. This adjustment made; immobilization of the deflector along the Z axis is definitely ensured thanks to a clamp 11 arranged on the rear portion 10 of the separator and exerting a force substantially radial on this part 10 to press against the neck of the tube.
- the vertical and horizontal deflection coils 4 and 3 are saddle-shaped, their respective length along the Z axis is substantially the same.
- the separator 2 shifts the coils 4 with respect to the coils 3 so that the rear part of the vertical deflection coils extends more towards the cylindrical end of the tube than the deflection coils horizontal.
- the length of the Vertical deflection windings is barely larger than the length along the Z axis of ring 5. It may happen that for needs related to desired performance, that the length of said ring 5 is such that the rear part of the vertical deflection coils extends, in this case also, more towards the cylindrical end of the tube than the coils of horizontal deflection.
- the invention uses the free space conductor 13, partly located under the rear end of the coils of vertical deflection at the rear of horizontal deflection coils; according to the invention, the element action zone making the attachment of the deflector on the neck of the tube is located in space 13.
- the fastening element 21 has at least two parts: a first part 23 intended to make the element 21 integral with the separator and a part 22 intended to ensure the attachment of the separator on the neck of the tube.
- Part 22 is a substantially frustoconical ring pierced with openings radial 31 showing a series of teeth 30.
- the inner surface of the ring is cylindrical, of diameter 35, slightly greater than diameter of the neck of the tube.
- the fastening element is for example in flange 23 formed with apertures 24 in a parallel direction to the axis of revolution of the ring 22.
- FIG. 2 is an exemplary embodiment of the invention using a clamping member as shown in Figures 3A and 3B.
- the end cylindrical of the separator 2 has a shoulder 20 of surface 28 substantially frustoconical and a collar 25 aperture opening 26 in a direction parallel to the Z axis.
- the flange 25 comprises at least two openings 26, diametrically opposed coming opposite openings 24 located on the flange 23 of the fastener.
- the separator is fixed after adjusting the Z position of the deflector on the neck of the tube by insertion of the fastening element 21 on the collar and translation to the deflector; the frustoconical portion 22 of the element 21 enters the free area between the separator and the collar of the tube, at least partly under the rear of vertical deflection coils 4; part 22 passes under the shoulder 20 bringing, taking into account the complementary frustoconical shapes the surfaces 27 and 28, respectively elements 20 and 21 in contact with each other.
- the forced approximation of the clamping element 21 against the shoulder 20, given the radial flexibility of the teeth 30, pushes the said teeth against the surface 8 of the neck of the tube ensuring the maintenance in position from the back of the diverter by fret effect.
- the shape of the shoulder 20 not being necessarily complementary to that of Part 22.
- the shoulder 20 is in ring shape of semi circular section.
- the shoulder 20 will also push back the flexible portion 22, substantially frustoconical against the glass surface of the tube ensuring a clamping by fret effect.
- At least two pawns 51 integral with the separator body extend towards the rear of the latter in a direction parallel to the Z axis. These pins are intended to cooperate with non-return washers 52 arranged in the openings 24 of the flange 25 of the fastening element 21 to prevent any movement of withdrawal when the pin 51 has penetrated into the opening of the washer 52.
- the shoulder 20 may alternatively be made in one piece with the plastic material injection separator in the mold of manufacture of said separator, either it can be a patch and by example glued to the back of the separator. In the latter case the material may be different from that of the separator and chosen according to its own qualities. As shown in Figure 4, splines 40 can be practiced on the surface 28 to reduce the mass of the annular shoulder 20.
- the fastening element 21 can be made integrally by injection plastic material in a mold; in one embodiment alternative element 21 can be made of at least two parts in different material. In the latter case the material constituting the flange can be chosen for these qualities of high mechanical rigidity plastic or metal, for example, while Part 22 may be material chosen to obtain good flexibility and / or to improve the contact with the glass neck of the tube to prevent slipping on this collar after immobilization (eg rubber or silicone).
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Description
- la figure 1 est une coupe transversale d'un dispositif de déviation selon l'état de la technique.
- la figure 2 représente en coupe un dispositif de déviation conforme à la présente invention
- les figures 3A et 3B sont en perspective, une représentation d'un mode de réalisation de l'élément de fixation assurant la fixation du déviateur sur le col du tube.
- la figure 4 représente la vue selon l'axe Z de la partie arrière du séparateur selon l'invention
- la figure 5 est une représentation d' un autre mode de réalisation de l'invention
- la figure 6 illustre vu en coup, un autre mode de réalisation avantageux de l'invention
Claims (9)
- Dispositif de déviation de faisceaux d'électrons pour tube à rayons cathodiques comprenant une paire de bobines de déviation verticale (4), une paire de bobines de déviation horizontale (3), au moins une des ces deux paires étant en forme de selle, un séparateur rigide (2) isolant l'une de l'autre les paires de bobines de déviation, un anneau en matériau ferromagnétique (5) de forme sensiblement tronconique disposé au-dessus d'au moins une partie des bobines de déviation et un élément de fixation (21) destiné à se solidariser au séparateur pour fixer l'arrière du déviateur sur le col du tube, l'élément de fixation comportant une partie flexible qui s'étend entre le séparateur et le col du tube, dans une région en partie située sous les bobines de déviation verticale caractérisé en ce que la partie flexible est en forme d'anneau sensiblement tronconique (22) et coopère avec un épaulement (20) disposé sur la surface interne arrière du séparateur (2) de façon à fixer le séparateur sur le col du tube par effet de frette.
- Dispositif de déviation de faisceaux d'électrons pour tube à rayons cathodiques selon la revendication précédente, caractérisé en ce que ladite partie flexible est déformée lorsqu'elle est amenée au contact de la partie arrière (2) du séparateur pour fixer ledit séparateur sur le col du tube par effet de frette.
- Dispositif selon une des revendications 1 ou 2 caractérisé en ce que la partie (22) de l'élément de fixation en forme d'anneau sensiblement tronconique est déformable selon des directions sensiblement radiales.
- Dispositif selon l'une des revendications 2 à 3 caractérisé en ce que l'élément de fixation (21) est réalisé dans au moins deux matériaux différents.
- Dispositif selon l'une des revendications 2 à 4 caractérisé en ce que des encoches (31) sont ménagées sur la partie sensiblement tronconique (22) de l'élément de fixation (21).
- Dispositif selon l'une des revendications 1 à 5 caractérisé en ce que des cannelures (40) sont disposées sur la surface interne de l'épaulement (20).
- Dispositif selon l'une des revendications précédentes caractérisé en ce que la solidarisation du moyen de fixation (21) au séparateur (2) s'effectue à l'aide d'au moins deux couples vis/écrou.
- Dispositif selon l'une des revendications 1 à 6 caractérisé en ce que la solidarisation de l'élément de fixation au séparateur s'effectue à l'aide d'au moins deux pions (51) s'étendant selon l'axe Z destiné chacun à pénétrer l'orifice d'une rondelle anti retour (52).
- Tube à rayons cathodiques comportant un dispositif conforme à l'une au moins des revendications précédentes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9609398A FR2751786B1 (fr) | 1996-07-25 | 1996-07-25 | Dispositif de fixation d'un deviateur sur le col d'un tube a rayons cathodiques |
FR9609398 | 1996-07-25 | ||
US08/844,814 US5923117A (en) | 1996-07-25 | 1997-04-22 | Deflection yoke securing device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0821388A1 EP0821388A1 (fr) | 1998-01-28 |
EP0821388B1 true EP0821388B1 (fr) | 2005-06-01 |
Family
ID=26232871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97401693A Expired - Lifetime EP0821388B1 (fr) | 1996-07-25 | 1997-07-15 | Dispositif de fixation d'un déviateur sur le col d'un tube à rayons cathodiques |
Country Status (5)
Country | Link |
---|---|
US (1) | US5923117A (fr) |
EP (1) | EP0821388B1 (fr) |
JP (1) | JP3976846B2 (fr) |
CN (1) | CN1294612C (fr) |
FR (1) | FR2751786B1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6404118B1 (en) * | 2000-12-09 | 2002-06-11 | Samsung Electro-Mechanics Co., Ltd. | Deflection yoke with a coil separator firmly engaged to the printed circuit board for preventing fluctuation |
WO2006073412A1 (fr) * | 2004-12-31 | 2006-07-13 | Thomson Licensing | Dispositif de fixation de bobine de deviation pour tube cathodique |
WO2006073411A1 (fr) * | 2004-12-31 | 2006-07-13 | Thomson Licensing | Dispositif de fixation de bloc de deviation pour tube cathodique |
JP4763522B2 (ja) | 2006-06-14 | 2011-08-31 | 株式会社ブリヂストン | タイヤ検査装置 |
JP4512578B2 (ja) | 2006-10-27 | 2010-07-28 | 株式会社ブリヂストン | 分離フィルタ決定装置及びタイヤ検査装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4016363A (en) * | 1976-03-15 | 1977-04-05 | Rca Corporation | Method for adhering components platform to cathode-ray tube and product thereof |
JPS58198833A (ja) * | 1982-05-14 | 1983-11-18 | Hitachi Ltd | カラ−ブラウン管 |
NL8304215A (nl) * | 1983-12-07 | 1985-07-01 | Philips Nv | Afbuigspoelenstel voor een beeldweergeefbuis. |
US4616265A (en) * | 1984-12-21 | 1986-10-07 | Rca Corporation | Deflection yoke assembly and mounting arrangement |
JPH081788B2 (ja) * | 1985-04-10 | 1996-01-10 | 松下電器産業株式会社 | 偏向ヨーク |
KR930000341Y1 (ko) * | 1990-10-24 | 1993-01-25 | 삼성전관 주식회사 | 편향 요크 |
KR930004295Y1 (ko) * | 1990-12-06 | 1993-07-10 | 삼성전관 주식회사 | 편향 요크 |
KR940005605Y1 (ko) * | 1991-08-29 | 1994-08-19 | 주식회사 금성사 | 칼라브라운관의 편향요크 유동 방지 장치 |
KR950011706B1 (ko) * | 1992-11-10 | 1995-10-07 | 삼성전관주식회사 | 투사형 수상관용 편향요크 및 포커스 마그네트의 고정구조 |
AU5953294A (en) * | 1993-12-16 | 1995-07-03 | Thomson Consumer Electronics, Inc | Method for mounting a deflection yoke and support structure therefor |
EP0690471B1 (fr) * | 1994-07-01 | 1998-11-18 | THOMSON TUBES & DISPLAYS S.A. | Système de déviation des faisceaux électroniques pour tube à rayons cathodiques |
DE69408443T2 (de) * | 1994-07-01 | 1998-09-03 | Thomson Tubes & Displays | Elektronenstrahl-Ablenksystem für Kathodenstrahlröhren |
CA2157104C (fr) * | 1994-08-29 | 2002-03-12 | Masanobu Honda | Collier de deviation et tube cathodique couleur utilisant ce collier |
-
1996
- 1996-07-25 FR FR9609398A patent/FR2751786B1/fr not_active Expired - Fee Related
-
1997
- 1997-04-22 US US08/844,814 patent/US5923117A/en not_active Expired - Fee Related
- 1997-07-15 EP EP97401693A patent/EP0821388B1/fr not_active Expired - Lifetime
- 1997-07-25 JP JP20006397A patent/JP3976846B2/ja not_active Expired - Lifetime
- 1997-07-25 CN CNB971153442A patent/CN1294612C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2751786A1 (fr) | 1998-01-30 |
JP3976846B2 (ja) | 2007-09-19 |
JPH10106453A (ja) | 1998-04-24 |
EP0821388A1 (fr) | 1998-01-28 |
FR2751786B1 (fr) | 1998-10-16 |
CN1173038A (zh) | 1998-02-11 |
US5923117A (en) | 1999-07-13 |
CN1294612C (zh) | 2007-01-10 |
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