MXPA97005121A - Deflex yoke - Google Patents

Abstract

A deflection yoke is disclosed which includes first and second spacers 5, each of which is formed in a configuration that takes half of a funnel configuration, and a magnetic wire wound around the first and second spacers 5, wherein at least one of the first and second spacers 5 has a plurality of through holes 8 formed in an outer peripheral portion thereof, and the pins 9 are selectively inserted in the through holes 8. A horizontal deflecting H-turn is formed from this by winding the magnetic wire around the first and second spacers 5, while the magnetic wire is retained on the pins 9, whereby the distribution of the winding is adjusted in a manner fi

Description

"YOKE OF DEFLEXION" BACKGROUND OF THE INVENTION The present invention relates to a deflection yoke and, particularly with a deflection yoke including a deflection turn formed in a section winding manner using a coil of turns, wherein the coil of turns has a plurality of through holes, whereby, a winding distribution of a wire can be adjusted finer than that in a deflection yoke of the related art, by using pins selectively inserted in the through holes. In a deflection yoke of the related art, a convergence characteristic, etc. it has been controlled by adjusting a winding distribution and, for this purpose, a baffle coil has been formed in a so-called roll-up manner in section using winding grooves formed in a coil of turns. The Figure is a front view of a horizontal deflecting H-turn formed in a sectional winding manner. The horizontal deflecting H-turn is formed by winding a magnetic wire around a spacer 1, formed in a configuration that is about half of a funnel configuration approximately. The separator 1 has "L" shaped projections 2 on each of the end surfaces thereof, both on a curved funnel side and on the curved side of the neck. The linear projections extending along the axis of the tube of a cathode ray tube are formed on an internal side surface of the separator 1, so that they correspond to the "L" shaped projections 2. Each winding slot M is formed between the adjacent linear projections. In this deflection yoke, the horizontal baffle H is formed by winding the magnetic wire along the winding slots M, while retaining in the "L" shaped projections on the curved side of the funnel and on the side curved neck During this time, in order to form a desired deflecting magnetic field, a winding distribution is formed by forming the horizontal deflecting H-turn, while an arrangement of the M-grooves of the winding is appropriately selected. In the deflection yoke of the related art, however, "even when the winding distribution is adjusted by appropriately selecting the arrangement of the winding slots M, it is actually difficult to entirely correct an erroneous convergence of the deflection yoke and, consequently, the The remaining erroneous convergence is corrected using an auxiliary device such as a corrective turn.If the winding distribution can be adjusted finer, it can be considered that the auxiliary device configuration of this type can be simplified and, works for convergence adjustment and similar factors can also be simplified.

COMPENDIUM OF THE INVENTION An object of the present invention is to provide a deflection yoke capable of adjusting a finer winding distribution than in the deflection yoke of the related art. To achieve the aforementioned object, in accordance with the present invention, a deflected yoke is provided which extends from a neck portion of a cathode ray tube along the axis of the cathode ray tube, including: first and second separators, each of which is formed in a configuration that is taken as half of a funnel configuration; and a magnetic wire is wound around the first and second spacers; wherein at least one of the first and second spacers has a plurality of through holes formed in an outer peripheral portion thereof. In the aforesaid deflection yoke, preferably pins are selectively inserted in the through holes, and a horizontal deflection coil is formed by winding the magnetic wire around the first and second spacers, while retaining the magnetic wire in the pins. Each of the pins preferably includes an insertion portion and a flange portion. Preferably, the spacer has an end surface on the curved side of the funnel and an end surface on the curved side of the neck, and the "L" shaped projections are formed on each of the end surfaces both on the side Curved funnel as on the curved side of the neck. In addition, linear projections extending in the direction of the cathode ray tube are preferably formed on an internal side surface of the spacer, to correspond to the "L" shaped projections. In accordance with the present invention, the provision of a plurality of through holes in a coil of turns along the circumferential direction allows a wire to be restrained in position by the use of pins projecting from the internal side surface of the wire. the coil of turns through the through holes. As a result, by selectively placing these pins, a winding distribution of the wire can be adjusted finer than that in the deflection yoke of the related art.

BRIEF DESCRIPTION OF THE DRAWINGS These and other objects of the invention are seen with reference to the description that is taken together with the accompanying drawings, in which: Figure 1 is a front view of a horizontal deflector turn in accordance with a first embodiment of the present invention; Figure 2 is a side view of a separator; Figure 3 is a side view of the separator, as viewed fthe side opposite to that in Figure 2; Figure 4 is a sectional view taken along the line -A of Figure 2; Figure 5 is a perspective view showing another embodiment of the pin; and Figure 6 is a front view of a horizontal deflection turn of the related art.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES Next, the embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 is a front view of a horizontal deflecting coil of a deflection yoke in accordance with a first embodiment of the present invention. The horizontal deflection yoke H is formed in a sectional winding manner using a spacer 5, followed by the combination with another horizontal deflecting coil, and then vertical deflection turns, a core and the like are placed outside the combined horizontal baffle coils , whereby a deflection yoke is formed. Figures 2, 3 show the separator 5, as seen fthe inside and outside thereof, respectively. As shown in these Figures, the separator 5 is formed of resin by injection molding in a configuration that is taken as half of an approximately funnel configuration. The separator 5 has "L" shaped projections 6 on each of the end surfaces thereof, both on the curved side of the funnel and on the curved side of the neck. The linear projections 7, which extend along the axis of the tube of the cathode ray tube, are formed on an internal side surface of the separator 5, to correspond to the projections 6 in the form of "L". Each winding groove M is formed between the adjacent linear projections 7. In this way, the horizontal baffle H is formed around the separator 5, selectively placing the winding slots M. In the separator 5, each of the linear projections 7 is disconnected in a region near the side of the funnel and each of the grooves of the winding is disconnected in the region where each projection 7 is disconnected. In the region where each winding groove M is disconnected, the spacer 5 has a plurality of through holes 8 extending along the circumferential direction. Each of the through holes 8 is formed in a circular configuration and as shown in Figure 4 which is a sectional view taken along line A-A of Figure 2 is off-center in the circumferential direction fthe center of the corresponding winding slot M. In the separator 5, the pins 9 are inserted into the through hole 8 fthe outer peripheral side of the separator 5, as necessary, and consequently, the horizontal deflecting H-turn can be formed in a desired winding distribution by winding the magnetic wire around the separator 5, while retaining on the pins 9. Specifically, the pin 9 is adjustably retained in the through hole 8 in a state such that a columnar front end of the pin 9 is inserted into the hole 8 through and projecting fthe inner side surface of the separator 5 until a lens 9A formed in the base of the pin 9 is brought into contact with the external lateral surface of the separator 5. In the step of forming the horizontal deflection spiral H of the yoke of deflection in accordance with this embodiment, the horizontal deflecting H-turn is formed by winding the magnetic wire around the separator 5 having the configuration n previously cited. As shown in Figures 1, 2, the pins 9 are inserted in the through holes 8 of the separator 5 in accordance with the necessary winding distribution and the separator 5 in a state such that it is placed in a winding machine. By a way of winding the magnetic wire along the desired winding slots M, while retaining it in the "L" shaped projections 6 formed on the end surfaces of the curved side of the funnel and on the side curved neck In the aforementioned winding, the magnetic wire for the horizontal deflecting H-turn is offset from the winding slots M and is retained by the pins 9 in the region where the pins 9 are inserted in the through holes 8. The winding angle of the magnetic wire, therefore, is changed locally in the region where the winding slots M are disconnected, with the result that the distribution of the winding can be adjusted finer than that in the case of winding. where the magnetic wire simply rolls up along the winding slots. With this configuration, since the separator 5 has the plurality of through holes 8 placed along the circumferential direction, the horizontal deflection H winding distribution can be adjusted very thinly by winding the magnetic wire for the horizontal deflection spiral. H around the separator 5, while retaining it on the pins 9 selectively inserted in the through holes 8. As a result, it is possible to correspondingly improve the convergence characteristic of the deflection yoke and also flexibly adjust the changes in the characteristics caused to the production time.

The pin having the columnar leading end corresponding to the circular through hole has been used in the aforementioned embodiment; however, the present invention is not limited to this and it should be understood that the pins corresponding to the through holes having various configurations can of course be used. For example, a pin having a planar front end shown in Figure 5 can insert into a slit-like through hole. The pins have been inserted directly into the separator in the aforementioned mode; however, the present invention is not limited to this and it must be understood that the pins can be inserted by a winding machine. In this case, after the winding is carried out using the pins, the magnetic wire is fixed with an adhesive and then the pins are removed. Although the description has been made by way of the example of the horizontal baffle formation in the aforementioned embodiment, this description is for illustrative purposes only and it should be understood that the present invention can be applied extensively to the formation of a vertical deflecting coil .

Claims (5)

R E I V I N D I C A C I O N E S:

1. A deflection yoke positioned to extend from a portion of the neck of a cathode ray tube, along the axis of the cathode ray tube tube, comprising: first and second spacers 5, each of which is formed in one configuration that is taken as half of a funnel configuration; and a magnetic wire wound around the first and second spacers 5; wherein at least one of the first and second spacers 5 has a plurality of through holes 8 formed in an outer peripheral portion thereof.

A deflection yoke according to claim 1, wherein the pins 9 are selectively inserted in the through holes 8, and a horizontal baffle H is formed by winding the magnetic wire around the first and separators 5, while retaining the magnetic wire in the pins 9.

The deflection yoke according to claim 2, wherein each of the pins 9 comprises an insertion portion and a portion 9A of the flange.

4. The deflection yoke according to claim 1, wherein the spacer has an end surface on the curved side of the funnel and an end surface on the curved side of the neck, and the "L" shaped projections 6 are formed on each of the end surfaces on both the curved side of the funnel and on the curved side of the neck. A deflection yoke according to claim 4, wherein the linear projections 7 extending in the direction of the cathode ray tube are formed on an internal side surface of the separator, in order to correspond to the projections 6 in "L" shape.