CN1167101C - Deflecting coil - Google Patents
Deflecting coil Download PDFInfo
- Publication number
- CN1167101C CN1167101C CNB001080369A CN00108036A CN1167101C CN 1167101 C CN1167101 C CN 1167101C CN B001080369 A CNB001080369 A CN B001080369A CN 00108036 A CN00108036 A CN 00108036A CN 1167101 C CN1167101 C CN 1167101C
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- CN
- China
- Prior art keywords
- back shroud
- coil
- deflecting coil
- guide rod
- correction component
- 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.)
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- Details Of Television Scanning (AREA)
Abstract
The present invention relates to a deflecting coil for cathode ray tubes, which comprises a coil separator, a horizontal deflecting coil, a vertical deflecting coil, a correcting member and a position adjusting member, wherein the coil separator is composed of a screen cover part, a back cover plate and a neck; the position adjusting member is arranged or installed between the back cover plate and the correcting member, and is used for ensuring the slight and accurate adjustment of the position of the correcting member by using the back cover plate as the center; consequently, picture deflection is improved accurately and stably, and a vertical magnetic field is corrected accurately and stably. The present invention has the advantage that the correcting member is connected into an integral guide rod for preventing the correcting member from deflecting or disengaging from the back cover plate. Consequently, the present invention enhances working efficiency and reliability.
Description
Technical field
The present invention relates to a kind of deflecting coil, more particularly, relate to the fixture of the coil separator of this kind deflecting coil, to be easy to and exactly the correction component of this deflecting coil to be mounted on the coil separator.
Background technology
For those skilled in the art, well-known, the deflecting coil that generally is used for the cathode ray tube (CRT) of television receiver or computer display can be divided into polytype, for example: saddle-lopps type deflecting coil or saddle-saddle type deflecting coil etc.
As shown in Figure 1, general deflecting coil (10) is provided with or is installed on the neck (2) of cathode ray tube (1), and, can be divided into as Fig. 2 and saddle as shown in Figure 3-saddle type deflecting coil and as Fig. 4 and saddle as shown in Figure 5-lopps type deflecting coil according to the winding arrangement of coil.
This deflecting coil (10) is used to make the BGR electron gun electrons emitted bundle by being installed in cathode ray tube (1) neck (2), blue (B), red (R) and green (G) light beam up and down, the deflection of left and right side direction, so that play the fluoroscopic accurate position that makes it to arrive cathode ray tube (1), and on the screen cover, form required image.
Fig. 2 and Fig. 3 are the structural representations of relevant traditional saddle-saddle type deflecting coil, as shown in the figure, in this traditional saddle-saddle type deflecting coil, the upper and lower side of screen cover portion inner cylinder at conical coil separator (11) is equipped with one group of saddle horizontal deflection coil (12), and at the left and right side of screen cover portion outer cylinder one group of saddle frame deflector coil (13) is installed.
In order to strengthen the magnetic field of frame deflector coil (13), similar cylindrical ferrite core (14) is installed on the screen cover portion outer cylinder of coil separator (11).
And coma is installed around coil separator (11) neck outer cylinder is eliminated coil (15), to proofread and correct the comatic aberration that is produced by frame deflector coil (13).
Fig. 4 and Fig. 5 are the structural representations about traditional saddle-lopps type deflecting coil.In this traditional saddle-lopps type deflecting coil, horizontal deflection coil (12) is installed on the upper and lower side of screen cover portion inner cylinder of copl separator (11), cylindrical ferrite core (14) then is installed on its outer cylinder, and, be wound with one group of ring-type frame deflector coil (16) along ferrite core (14) upper and lower part appearance.
Coma is set or is equipped with around the outer cylinder of coil separator (11) neck eliminate coil (15), be used for proofreading and correct the coma that is produced by frame deflector coil (16).
Yet, there is following drawback in traditional deflecting coil: in Fig. 2 and saddle-saddle deflecting coil shown in Figure 3, the ferrite core (14) that is wound with frame deflector coil (13) must be installed on the outer cylinder of the coil separator (11) that horizontal deflection coil (12) is installed.Yet when ferrite core (14) being fixed in coil separator (11) outside, the spatial deviation of ferrite core (14) and the skew of frame deflector coil (13) coil very easily cause the misconvergence phenomenon on the picture.
That is, in as Fig. 6 and traditional deflecting coil as shown in Figure 7, can occur on the vertical direction and horizontal direction on the misconvergence phenomenon.
The method of existing this misconvergence of recoverable comprises the steps: that as shown in Figure 8 (11a) is provided with or correcting member (20) is installed on the back shroud of coil separator (11), with the misconvergence on the level of corrections direction, and the magnetic field on the level of corrections direction.On the other hand, to the correction of the misconvergence on the vertical direction, be installed in the volume on the circuit board (mark) of coil separator (11) side by control, or make whole deflecting coil (10), to proofread and correct vertical magnetic field around cathode ray tube (1) rotation.
In conventional art, by adjusting the volume on the circuit board, or whole deflecting coil (10) is rotated, though can carry out to a certain degree correction to vertical magnetic field, but there is following defective in it: owing to the adjustment of volume is given peripheral magnetic field such as: harmful effect is caused in the magnetic field of vertical direction etc., thereby increases extra correction work; And the method by making deflecting coil (10) proofread and correct vertical magnetic field around cathode-ray tube CRT (1) rotation, to the operation of final stage, i.e. ITC operation impacts, thereby reduces operating efficiency.
Summary of the invention
The present invention invents in order to solve the above-mentioned drawback of conventional coil, the purpose of its invention is for a kind of deflecting coil is provided: the misconvergence that is easy to carry out on the picture vertical direction is proofreaied and correct, especially, even under the situation of fixed deflection coil, also can carry out correction to picture, and need not to increase other correction operation or, also can not have any impact the ITC operation.
In order to realize above-mentioned purpose of the present invention, providing a kind of is the deflecting coil of feature with following content, and it comprises: by the screen cover portion of the screen cover that is connected in cathode ray tube, extend to the rear portion and back shroud that described cathode ray tube rear portion is covered and extend to the rear portion and coil separator that the neck that the electron gun of described cathode ray tube covers is constituted from described back shroud from described screen cover portion; One group of setting or be installed on the inside and outside cylinder of described coil separator, to form the level and the frame deflector coil of horizontal deflection magnetic field and vertical deflection magnetic field; Be provided with or be installed on the back shroud of described coil separator, to proofread and correct vertical magnetic field and picture correction for drift member; Be provided with or be installed between described back shroud and the correction component, so that correction component is fixed on the back shroud, and the position adjustments part that it is accurately adjusted corresponding to the position of back shroud.
In the above-mentioned deflecting coil, described correction component is comprising: be arranged on the back shroud, be center and symmetry with the neck of described coil separator, and its inside is equipped with the pair of guide rails of guide-track groove; The guide-track groove that is arranged at described guide rail inside is interior and removable, be used to proofread and correct two correcting members of vertical magnetic field and picture deviation; And the guide rod that the outboard end of described correcting member is connected as one.
Described correcting member preferably is made of metal, and described guide rod is preferably formed by the synthetic resin compacting.
In the technical process of the described guide rod of injection mo(u)lding, correcting member is inserted in the described guide rod, and make it to take shape in one with described guide rod.
In above-mentioned deflecting coil, described position adjustments member comprises: the one group of fixed projection that is arranged at the guide rail back shroud outside on every side; Be arranged at described correction component downside, be used for and the movable movable projection that engages of the fixed projection of back on the cap.
Described movable projection setting or be installed on the downside at the guide rod two ends on the described correction component.
Position with respect to described correction component on described back shroud is provided with an elastic component, and described elastic component has elasticity upwards, in order to prevent moving formed loosening phenomenon owing to described correction component corresponding to back shroud.
Fixed projection is arranged at the elastic component top.
Description of drawings
Other purpose of the present invention and feature and advantage are able to more clearly describe by following relevant drawings.
Fig. 1 is the sectional drawing of traditional cathode ray tube that deflecting coil adopted;
Fig. 2 and Fig. 3 are the sectional drawing of traditional saddle-saddle type deflecting coil;
Fig. 4 and Fig. 5 are the sectional drawing of saddle-lopps type deflecting coil;
Fig. 6 and Fig. 7 are the view of display frame misconvergence phenomenon in the horizontal and vertical directions;
Fig. 8 is the phantom view of traditional deflecting coil with imbalance correcting member;
Fig. 9 is the phantom view of deflecting coil involved in the present invention;
Figure 10 is the plane graph of deflecting coil shown in Figure 9;
Figure 11 is the sectional drawing of deflecting coil of the present invention;
Figure 12 is the schematic diagram of the correction component of deflecting coil of the present invention;
Figure 13 is that the A-A of Figure 12 is to sectional drawing.
*Explanation to the symbol of main pattern:
100: deflecting coil 110: the coil separator
120: screen cover portion 130: back shroud
140: neck 200: correction component
210: guide rail 220: correcting member
230: guide rod 300: the position adjustments member
310,320: the guide rail projection
400: flexure strip
Embodiment
Fig. 9 to Figure 13 represents the deflecting coil of most preferred embodiment of the present invention.As shown in the figure, deflecting coil of the present invention (100) comprises by symmetrical two parts and the coil separator (110) that is integrated.
As shown in figure 11, coil separation (110) is made of following three parts: the screen cover portion (120) that is connected the screen cover plate of cathode ray tube (1); Extend to the rear portion and back shroud (130) that described cathode ray tube (1) rear portion is covered and extend to the rear portion and neck (140) that the electron gun portion of described cathode ray tube (1) is covered from described screen cover portion (120) from described back shroud (130).
The horizontal deflection coil (111) that produces horizontal deflection magnetic field is arranged in coil separator (110) installed inside, so that electron beam is to horizontal direction deflection, and the frame deflector coil (112) that produces vertical deflection magnetic field is installed in its outside, so that electron beam is to vertical direction deflection.
And the magnetic field that is produced for enhanced level and frame deflector coil (111,112), can use anchor clamps that one ferrite core (150) is fixed on the lateral surface of coil separator (110).
On the back shroud (130) of coil separator (110), be provided with or be equipped with correction component (200), to proofread and correct vertical magnetic field and picture deviation; And between this correction component (200) and back shroud (130), be provided with position adjustments member (300), so that be the center, slightly and accurately regulate the position of correction component (200) with back shroud (130).
Fig. 9-Figure 12 represents the concrete structure of above-mentioned correction component (200).As shown in the figure, correction component (200) comprises two guide rails (210) and two correcting members (220) and guide rod (230).
Guide rail (210) is installed on the back shroud (130), and is the center with back shroud (130) neck (140), makes it to form symmetry, and the inner guide-track groove (211) that forms in each both sides.
Correcting member (220) is movably set in the guide-track groove (211) of guide rail (210), the improvement and the vertical magnetic field of picture deviation is proofreaied and correct guaranteeing.
On the other hand, correcting member (220) is stable to be inserted on the guide rail (210) in order to make, and guide rod (230) plays control action to this, especially, the outboard end of correcting member (220) is connected as one, thereby play the effect that is integrated.
Above-mentioned correcting member (220) is preferably formed by stamped metal, and guide rod (230) is then preferably made by synthetic resin.
Among the present invention, when injection mo(u)lding guide rod (230), correcting member (220) is arranged at guide rod (230) accurate position on every side, preferably correcting member (220) and guide rod (230) are shaped to one, thereby when making correcting member (200), improved its operating efficiency.
Position adjustments member (300) can be finely tuned correction component (200), to carry out accurate magnetic field correction.Above-mentioned position adjustments member (300) comprising: one group of fixed projection (320) and one group of movable projection (310) that is arranged at correcting member (200) downside that is arranged near the back shroud (130) of guide rail (210).The guide rail projection is intermeshed between (310,320).Thereby guarantee the position of correction component (200), realize the fine setting of position and accurately adjusting with respect to the back shroud (130) of guide rail (210).
That is, the movable projection (310) of position adjustments member (300) is arranged at the downside of each end of guide rod (230) of correcting member (200), and fixed projection (320) is arranged at back shroud (130) end face and the movable corresponding position of projection (310).
In deflecting coil of the present invention (100), must guarantee that the back shroud (130) of correction component (200) engages, so that prevent guide rod (230) back shroud (130) skew relatively.And the loosening phenomenon in order to prevent from connection procedure, may occur, certain-length is cut at back shroud (130) both ends, form two and have certain width and the flexible elastic component (400) that makes progress.Simultaneously, at the top of this elastic component (400) fixed projection (320) is set all.
Has deflecting coil related among the present invention of feature like this (100), for the picture deviation being improved and vertical magnetic field being strengthened, the correcting member (220) that will constitute correction component (200) inserts in the guide rail (210) of back shroud (130) top formation.
At this moment, by controlling the spacing between movable projection (310) and the fixed projection (320), slightly and accurately adjust the position of the relative back shroud of correction component (200) (130), in the guide rail (210) with correcting member (220) the insertion back shroud (130) of correction component (200).
That is,, can accurately carry out correction to magnetic field by slight adjustment correcting member (220) displacement of back shroud (130) relatively.
On the other hand, in the process of the guide rail (210) that the correcting member (220) of correction component (200) is inserted back shroud (130), the guide rod (230) of correction component (200) meshes together with guide rail (210), and forms bias voltage upwards by elastic component (400).Thereby effectively prevented correcting member (220) the loosening phenomenon of back shroud (130) relatively.
Therefore, effectively prevent to make the phenomenon of correcting member (220) from the guide rail disengaging owing to staff's error.
As mentioned above, the deflecting coil that relates among the present invention can make correcting member move slightly and accurately on the guide rail of back shroud, correctly and stably to carry out to the improvement of picture deviation with to the correction of vertical magnetic field.
And the guide rod by correcting member is connected as one, can prevent from correcting member to be departed from or break away from, thereby can increase work efficiency from back shroud.
Claims (6)
1. deflecting coil comprises:
By the screen cover portion of the screen that is connected cathode ray tube, extend to the rear portion and back shroud that described cathode ray tube rear portion is covered and extend to the rear portion and coil separator that the neck that the electron gun portion of described cathode ray tube covers is constituted from described back shroud from described screen cover portion; One group of setting or be installed on the inside and outside cylinder of described coil separator, to form the level and the frame deflector coil of horizontal deflection magnetic field and vertical deflection magnetic field; Be provided with or be installed on the back shroud of described coil separator, to proofread and correct vertical magnetic field and picture correction for drift member; Be provided with or be installed between described back shroud and the correction component, so that the position adjustments member that correction component is regulated corresponding to the position of back shroud is characterized in that:
Described correction component comprises: be arranged on the back shroud, be center and symmetry with the neck of described coil separator, and portion is equipped with the pair of guide rails of guide-track groove within it; The vertical magnetic field that the guide-track groove that is arranged at described guide rail inside is interior and removable, be used to proofread and correct and two correcting members of picture deviation; And the guide rod that the outboard end of described correcting member is connected as one;
Described position adjustments member comprises: in the described back shroud outside, near be provided with guide rail one group of fixed projection; Be arranged at described correction component downside, be used for second group of movable projection engaging with the fixed projection of back shroud.
2. deflecting coil according to claim 1 is characterized in that: described correcting member is made of metal, and described guide rod is formed by the synthetic resin compacting.
3. deflecting coil according to claim 1 and 2 is characterized in that: when the described guide rod of injection mo(u)lding, correcting member is inserted in the described guide rod, and take shape in one with described guide rod.
4. deflecting coil according to claim 1 is characterized in that: described second group of movable projection setting or be installed on the downside at the guide rod two ends on the described correction component.
5. deflecting coil according to claim 1, it is characterized in that: the position with respect to described correction component on described back shroud is provided with an elastic component, described elastic component has elasticity upwards, in order to prevent moving formed skew owing to described correction component corresponding to back shroud.
6. deflecting coil according to claim 5 is characterized in that: fixed projection is arranged on the described elastic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001080369A CN1167101C (en) | 2000-06-09 | 2000-06-09 | Deflecting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001080369A CN1167101C (en) | 2000-06-09 | 2000-06-09 | Deflecting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1328337A CN1328337A (en) | 2001-12-26 |
| CN1167101C true CN1167101C (en) | 2004-09-15 |
Family
ID=4579098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001080369A Expired - Fee Related CN1167101C (en) | 2000-06-09 | 2000-06-09 | Deflecting coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1167101C (en) |
-
2000
- 2000-06-09 CN CNB001080369A patent/CN1167101C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1328337A (en) | 2001-12-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |