EP0747923A1 - Schliessvorrichtung für ein Ablenkjoch - Google Patents

Schliessvorrichtung für ein Ablenkjoch Download PDF

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Publication number
EP0747923A1
EP0747923A1 EP95830243A EP95830243A EP0747923A1 EP 0747923 A1 EP0747923 A1 EP 0747923A1 EP 95830243 A EP95830243 A EP 95830243A EP 95830243 A EP95830243 A EP 95830243A EP 0747923 A1 EP0747923 A1 EP 0747923A1
Authority
EP
European Patent Office
Prior art keywords
pin
deflection yoke
wedge
yoke
tube
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.)
Withdrawn
Application number
EP95830243A
Other languages
English (en)
French (fr)
Inventor
Anthony Stanley Baran
Gildo Di Domenico
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 SpA
Original Assignee
Videocolor SpA
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 SpA filed Critical Videocolor SpA
Priority to EP95830243A priority Critical patent/EP0747923A1/de
Priority to SG9609820A priority patent/SG82559A1/en
Priority to KR1019960019703A priority patent/KR100423383B1/ko
Priority to JP8146120A priority patent/JPH09102289A/ja
Priority to CN96106843A priority patent/CN1091939C/zh
Publication of EP0747923A1 publication Critical patent/EP0747923A1/de
Withdrawn legal-status Critical Current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
    • H01J29/70—Arrangements for deflecting ray or beam
    • 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 deflection yoke for a cathode ray tube and more specifically, to an arrangement for locking the yoke to the tube after positioning adjustment of the yoke is completed.
  • the deflection yoke of a cathode ray tube is placed on the neck of the tube. After adjustment of the yoke relative to the tube has been completed, the yoke is permanently attached or locked to the tube in a manner to prevent further relative movement of the yoke-tube combination. It is desirable to prevent the locking operation from changing the yoke position or geometric shape, so as not to alter the horizontal and vertical deflection fields.
  • US Patent 4,338,584 describes a deflection yoke 1, illustrated in FIGURE 1, including a separator 12, generally made of plastic for isolating the horizontal deflection coils 13 from the vertical deflection coils 14.
  • a ring-shaped rear part 5 is secured by clamp 6 on neck 3 of the tube.
  • the front part 8 of the deflection yoke is locked in position after adjustment by pins 9 with teeth 10.
  • Pins 9 are able to move inside bushing 7 toward the flared part 4 of the tube.
  • the bushing forms an integral part of the separator. Teeth 10 mesh with notched part 11 of the bushing to prevent rearward movement of pin 9.
  • pin 9 moves by fixed increments and not by continuous or gradual displacement.
  • Such arrangement may not always allow the front of the deflection yoke to be held in a given position, causing either a jump, if the pin is not in contact with surface 4, or a reaction force, pushing back on the front of the separator. Because of the flexibility of the separator, the reaction force produces a change in the position of the deflection coils relative to the tube.
  • Another disadvantage is that it is no longer possible to move back the pins if they are pushed too far against part 4 of the tube.
  • a front ring of the separator shown in FIGURE 2 is provided with threaded bushings 24.
  • Threaded pins 26 having contact head 28 are threaded in bushing 24 in a continuous or gradual manner.
  • the torque transmitted may cause rotation of the deflection yoke around the longitudinal axis Z of the tube.
  • the reaction force transmitted by contact head 28 may deform the flexible front part 8 of the separator, causing movement of the deflection coils relative to the cathode ray tube.
  • the pin is translated or made to slide in a non-threaded bushing until the slide pin comes in contact with the flared part of the tube. Then, a wedge with a cross-sectional area greater than a cross-sectional area of a hollow part of the pin is forced into the hollow part. Thus, further relative movement of the pin in the bushing is prevented.
  • a deflection yoke for a cathode ray tube embodying an aspect of the invention includes a liner.
  • the liner includes a front ring, having an outer section which includes sleeves.
  • a corresponding pin is received in a given sleeve to support a front portion of the deflection yoke on a flared part of the tube.
  • a rear section of the pin is hollow and serves as a housing for a wedge that locks the pin into the given sleeve.
  • FIGURE 1 illustrates a cross section of a prior art deflection yoke mounted on a cathode ray tube.
  • FIGURE 2 illustrates a second embodiment of a locking arrangement of a prior art deflection yoke.
  • FIGURE 3 illustrates a side view of a deflection yoke, embodying an aspect of the invention.
  • FIGURE 4 shows the separator of FIGURE 3 and the position locking arrangement in more detail.
  • FIGURES 5A and B are longitudinal and side views, respectively, of a pin for fastening the deflection yoke of FIGURE 3 or 4 on the flared part of the tube.
  • FIGURE 6A and 6B are longitudinal and side views, respectively, of a wedge inserted in the pins of FIGURES 5A or 5B and,
  • FIGURE 7 shows an alternate embodiment of a locking pin for the yoke of FIGURE 3 or 4.
  • FIGURE 3 illustrates a deflection yoke 120, embodying an aspect of the invetion, including a yoke liner or separator.
  • a cylindrically shaped rear part 165 of deflection yoke 120 is locked on a tube neck 160 by a clamp 175 in a conventional manner.
  • the separator has a front ring 110 that supports sleeves or bushings 100. Inside each of bushing 100, a slide pin 115 is inserted and translated in bushing 100 until a front end of slide pin 115 comes in contact with a flared part 140 of the tube. Pin 115 is locked in position by inserting, in its rear hollow part, a block or wedge 116. Wedge 116 has a cross-sectional area which is greater than that of the hollow part of pin 115.
  • FIGURE 4 shows the separator of FIGURE 3 in a partially exploded view. Similar symbols and numerals in FIGURES 3 and 4 indicate similar items or functions.
  • pins 115, supporting the front part 110 of the deflection yoke, are shown before and after being inserted in bushings 100. The locking in position of the yoke is made by the insertion of wedge 116 in the hollow rear part of a given bushing 100.
  • the yoke When the position of the deflection yoke is being adjusted on the tube neck, the yoke is held by an external arrangement, not shown. After slide pins 115 have been inserted in bushings 100, the yoke is locked on tube neck 160 by tightening clamp 175. A given wedge 116, which has a larger cross-sectional area than that of the hollow part of pin 115 is initially pushed against pin 115 to bring pin 115 in contact with the tube surface 140. Then, wedge 116 penetrates the hollow part of pin and causes the wall of pin 115 to expend radially. Thereby, pin 115 is locked against the internal walls of bushing 100. Because the deflection yoke is then locked on the tube, the external holding arrangement, not shown, is released and removed. Advantageously, the deflection yoke is, thereby, locked in position without applying any reactive force to ring 110 that could cause the yoke to move or to be deformed, during insertion of the locking wedges 116 in pins 115
  • pins 115 are hollow with an approximately cylindrically shaped. Similar symbols and numerals in FIGURES 3, 4, 5A, 5B, 6A, 6B and 7 indicate similar items or functions.
  • Four slots 201 of FIGURE B spaced 90 degrees apart are formed in the wall of the hollow part along a portion 200 of a length 203 of FIGURE 5A. Slots 201 extend from a rear part 202 of FIGURE 5A along its longitudinal axis. Slots 201 divide the wall into radially expandable flexible section.
  • Locking wedge 116 of FIGURE 6A is cylindrically shaped along a portion 301, equal to approximately two-thrids of its length 302. Locking wedge 116 terminates with a tapered front part 305 that facilitates the insertion of wedge 116 in the hollow part of pin 115 and the expansion of the wall sections of pin 115.
  • wedge 116 is provided with a channel 304 for injection of glue. The glue permanently bonds parts 100, 115 and 116 to one another and to the surface of the tube by flow of the glue through opening 204 in pin 115.
  • each pin 115 includes a single slot forming a helical opening coming out at the rear 202 of the pin.
  • wedge 116 of FIGURE 3 it may be desirable to release wedge 116 of FIGURE 3. This can be done by making wedge 116 longer than the length of the hollow part of pin 115. In this way, when the yoke is held in position on the tube, a portion of wedge 116 protrudes outside of pin 115. Thereby, the withdrawal, if necessary, of wedge 116 by traction of the protruding section is facilitated.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
EP95830243A 1995-06-09 1995-06-09 Schliessvorrichtung für ein Ablenkjoch Withdrawn EP0747923A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP95830243A EP0747923A1 (de) 1995-06-09 1995-06-09 Schliessvorrichtung für ein Ablenkjoch
SG9609820A SG82559A1 (en) 1995-06-09 1996-05-17 Deflection yoke locking arrangement
KR1019960019703A KR100423383B1 (ko) 1995-06-09 1996-06-04 편향요크로킹장치
JP8146120A JPH09102289A (ja) 1995-06-09 1996-06-07 偏向ヨーク固定配置
CN96106843A CN1091939C (zh) 1995-06-09 1996-06-08 偏转线圈锁定装置和锁定方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95830243A EP0747923A1 (de) 1995-06-09 1995-06-09 Schliessvorrichtung für ein Ablenkjoch

Publications (1)

Publication Number Publication Date
EP0747923A1 true EP0747923A1 (de) 1996-12-11

Family

ID=8221944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830243A Withdrawn EP0747923A1 (de) 1995-06-09 1995-06-09 Schliessvorrichtung für ein Ablenkjoch

Country Status (5)

Country Link
EP (1) EP0747923A1 (de)
JP (1) JPH09102289A (de)
KR (1) KR100423383B1 (de)
CN (1) CN1091939C (de)
SG (1) SG82559A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723143A1 (de) * 1977-05-23 1978-11-30 Licentia Gmbh Fernsehbildroehre mit einer daran befestigten ablenkeinheit
DE3010262A1 (de) * 1980-03-18 1981-09-24 Videocolor GmbH, 7900 Ulm Verfahren zum ausrichten und befestigen einer ablenkspulenanordnung
US4338584A (en) 1980-11-24 1982-07-06 Rca Corporation Television deflection yoke mount
EP0431229A1 (de) * 1989-12-08 1991-06-12 THOMSON TUBES & DISPLAYS SA Ablenkungsjochaufbau für eine Kathodenstrahlröhre und seine Halterung
US5185872A (en) 1990-02-28 1993-02-09 Intel Corporation System for executing different cycle instructions by selectively bypassing scoreboard register and canceling the execution of conditionally issued instruction if needed resources are busy

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986156A (en) * 1975-01-16 1976-10-12 Rca Corporation Yoke mount assembly
JPS5540688Y2 (de) * 1975-12-24 1980-09-22
US4195315A (en) * 1978-09-29 1980-03-25 Zenith Radio Corporation Lockable adjustment means for self-converging adjustable yoke assembly
KR890007730Y1 (ko) * 1987-01-31 1989-10-31 김경재 액자틀
JP2871698B2 (ja) * 1988-08-24 1999-03-17 株式会社日立製作所 偏向ヨーク付きカラーブラウン管
US5028898A (en) * 1988-08-24 1991-07-02 Hitachi, Ltd. Color cathode-ray tube having deflection yoke
DE3923110A1 (de) * 1989-07-13 1991-01-17 Graetz Nokia Gmbh Abstuetzeinrichtung fuer eine bildroehrenkomponente
JPH0377355A (ja) * 1989-08-19 1991-04-02 Fujitsu Ltd 放熱型半導体装置
JP2862104B2 (ja) * 1991-07-23 1999-02-24 三菱重工業株式会社 微粒子混合燃料焚きディーゼルエンジンの燃料供給方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723143A1 (de) * 1977-05-23 1978-11-30 Licentia Gmbh Fernsehbildroehre mit einer daran befestigten ablenkeinheit
DE3010262A1 (de) * 1980-03-18 1981-09-24 Videocolor GmbH, 7900 Ulm Verfahren zum ausrichten und befestigen einer ablenkspulenanordnung
US4338584A (en) 1980-11-24 1982-07-06 Rca Corporation Television deflection yoke mount
EP0431229A1 (de) * 1989-12-08 1991-06-12 THOMSON TUBES & DISPLAYS SA Ablenkungsjochaufbau für eine Kathodenstrahlröhre und seine Halterung
US5185872A (en) 1990-02-28 1993-02-09 Intel Corporation System for executing different cycle instructions by selectively bypassing scoreboard register and canceling the execution of conditionally issued instruction if needed resources are busy

Also Published As

Publication number Publication date
CN1143828A (zh) 1997-02-26
CN1091939C (zh) 2002-10-02
KR100423383B1 (ko) 2004-06-16
SG82559A1 (en) 2001-08-21
KR970003374A (ko) 1997-01-28
JPH09102289A (ja) 1997-04-15

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