JP3061936U - Electronic beam deflection device - Google Patents

Abstract

(57) Abstract: To provide an electron beam deflector that can be easily mounted without damaging the horizontal deflection coil when mounting the horizontal deflection coil on the inner surface of the coil separator. A locking piece (21) is formed in a through hole (22) of a coil separator (20) and extends in the direction of the display from the neck to the edge of the window (12) of the horizontal deflection coil (10) on the inner surface of the locking piece (21). A hook 23 that contacts the portion 12a is formed, and the locking piece 21 is urged outward so that the hook 23 does not protrude inward from the inner surface of the coil separator. , A protrusion 24 is formed to engage with the recess formed in the through hole 22.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a ventless type electron beam deflecting device capable of easily mounting a horizontal deflection coil without damaging the horizontal deflection coil when mounting the horizontal deflection coil on a coil separator.

[0002]

[Prior art]

 As shown in FIG. 11, a cathode ray display tube (hereinafter simply referred to as a “display tube”) used for a television or a computer display includes a tubular neck portion 110 having a built-in emission section 101 for an electron beam E, A display section 120 extending from the neck portion 110 to display an image by the projection of the electron beam E; and an outer periphery of the path of the electron beam E, which is coaxial with the axis P of the display tube. An electron beam deflecting device 200 formed in a tubular shape whose diameter gradually increases from the cervical side toward the display unit side is mounted. The electron beam deflecting device 200 deflects the electron beam E emitted by carrying the image signal in the electron beam emitting section 101 in the horizontal and vertical directions. The same applies to the case of a color display tube, in which three electron beams carrying image signals corresponding to the three primary colors of R (red), G (green), and B (blue) are emitted from the electron beam emitting unit. The electron beam is deflected in the horizontal and vertical directions by the electron beam deflector, and the deflected electron beam collides with fluorescent dots emitting R, G, and B light on the phosphor screen of the display unit to form an image. Form.

As shown in FIGS. 11 and 12, an electron beam deflecting device used for these display tubes is generally coaxial with an axis P of the display tube 100 and from the neck side of the display tube 100. A pair of horizontal deflection coils 210, 210 which are formed into a tubular shape whose diameter gradually increases toward the side and are arranged to face each other in the vertical direction, and a coil separator 220 having the horizontal deflection coils 210, 210 mounted on the inner surface thereof. And a pair of vertical deflection coils 230, 230 which are formed along the outer periphery and are arranged to face each other in the horizontal direction, and an annular ferromagnetic core (ferrite core) 240 disposed on the outer periphery. doing.

In the electron beam deflecting device 200, a pair of horizontal deflection coils 210 and 210 have a function of deflecting the electron beam E in the horizontal direction by applying a vertical magnetic field to the path of the electron beam E. The pair of vertical deflection coils 230, 230 has the function of deflecting the electron beam in the vertical direction by applying a horizontal magnetic field to the path of the electron beam. The coil separator 220 separates the horizontal deflection coil 210 and the vertical deflection coil 230 from each other and supports them so that their positions do not shift. The ferromagnetic core 240 is mounted to increase the density of the magnetic flux formed on the path of the electron beam E by the horizontal deflection coil 210 and the vertical deflection coil 230.

As shown in FIG. 10, the horizontal deflection coil 210 is generally formed in a saddle shape whose diameter gradually increases from the neck of the display tube toward the display. The conventional horizontal deflection coil is called a “vent type”, and a portion in which an electric wire rises radially with respect to the axis P in a flange shape and is wound, that is, a vent portion 211 is formed on the neck side. There. In the bent type electron beam deflector, the vertical deflection coil 230 is also formed into a substantially similar shape, and a similar vent portion 231 is formed.

However, the vent type has a complicated assembly procedure. For example, the ferromagnetic core 240 and the like cannot be mounted unless the split type is used. For example, as shown in FIG. 9, one example of a horizontal deflection coil is a so-called “ventless type” horizontal deflection coil and a vertical deflection coil that only gradually expands in diameter from the neck to the display, but lacks a vent. Coils have come to be used. This ventless type horizontal deflection coil 210 is wound in bundles 213... In a saddle-shaped surface whose diameter gradually increases from the neck toward the display. Is formed with a through-hole-shaped window 212.

In this ventless type electron beam deflector, the horizontal deflection coil 210 and the vertical deflection coil 230 only unilaterally increase in diameter from the neck side to the display unit side. The flange-shaped vent portions 211 and 231 are not formed. Therefore, when assembling the electron beam deflector, a pair of vertical deflection coils 230 and 230 are mounted on the outer surface of the coil separator 220 having a pair of horizontal deflection coils 210 and 210 mounted on the inner surface, and then the outer periphery thereof is mounted. The above-mentioned annular ferromagnetic core 240 may be simply fitted, and the fitted ferromagnetic core 240 may be bonded and fixed to the coil separator 220 using a hot melt adhesive or the like, so that the number of parts and the number of assembly steps are reduced. There is an advantage that it can be greatly reduced.

However, in the aforementioned ventless type electron beam deflector, since the horizontal deflection coil 210 does not have the vent portion 211, it cannot be held and fixed to the inner surface of the coil separator 220 with the vent portion 211 interposed therebetween. Therefore, through a through-hole window 212 formed in the center of the horizontal deflection coil 210, the inner surface of the coil separator 220 is bonded and fixed with a hot melt adhesive or the like. However, in this method, the fixing position of the horizontal deflection coil 210 varies, and many man-hours are required for this fixing.

In order to solve this problem, the following simple fixing method has been developed. As shown in FIG. 13, the coil separator 220 is provided with two axially symmetric ribs 229 that partition the inner surface of the coil separator 220 up and down along the axis P. In addition, a through hole 221 penetrating through the inside and outside of the coil separator 220 is formed on the inner surface of the coil separator separated by the two ribs 225, and the through hole 221 has an edge 221a on the neck side thereof. And a hook 225 which is in contact with the neck 212a of the window 212 of the horizontal deflection coil 210 on the neck side thereof. The locking piece 223 is urged inward such that the hook 225 protrudes inward from the inner surface 228 of the coil separator 220.

When the horizontal deflection coil 210 is mounted on the coil separator 220, one of the horizontal deflection coils 210 is attached to the display section so as to be in close contact with the inner wall 228 sandwiched between the two ribs 229 of the coil separator 220. Insert from the side. At this time, the end of the horizontal deflection coil 210 on the neck side comes into contact with the hook 225 of the locking piece, but is inserted regardless. At this time, the hook 225 is pushed up by the horizontal deflection coil 210 against the urging, and goes over the wire bundle 213 of the coil while rubbing the wire bundle 213 and falls into the window 212, and the edge 212a on the neck side of the window comes into contact with the window 212. Abut Thereby, the horizontal deflection coil 210 is fixed so as not to get out of the display unit side. Similarly, if the other pair of horizontal deflection coils 210 is also fixed, the mounting of the horizontal deflection coils is completed.

[0011]

[Problems to be solved by the invention]

 As described above, in the conventional ventless type electron beam deflector, when the horizontal deflection coil 210 is mounted on the coil separator 220, the wire bundle 213 of the coil pushes up the hook 225 against the urging, so that the window 212 Until it reaches. Here, in order to secure the horizontal deflection coil 210, it is necessary to insert the hook 225 deeply into the window 212 of the horizontal deflection coil. If the hook depth is increased, the horizontal deflection coil 210 and the hook 225 at the time of insertion are required. And the friction between the coil and the coil becomes large, thereby causing a problem that the yield of the product is reduced by deforming the coil or scratching the electric wire. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and accordingly, an object thereof is to provide an electron beam deflector which can easily be mounted without damaging the horizontal deflection coil when mounting the horizontal deflection coil on the coil separator. Is to provide.

[0012]

[Means for Solving the Problems]

 In order to solve the above problem, according to the present invention, in claim 1, the coil separator has a through hole penetrating through the inside and outside of the side wall, and the through hole extends from the edge on the neck side of the coil separator. A locking piece having a free end in the direction of the horizontal deflection coil is formed, and a hook is formed on the inner surface of the locking piece to be in contact with the edge on the neck side of the window at the center of the horizontal deflection coil. The piece is urged outward so that the hook does not project inward from the inner surface of the coil separator, and the locking piece has a convex portion formed at its free end. An electron beam deflecting device is provided in which a concave portion engaging with the convex portion is formed at an edge portion of the through hole facing the display portion on the display portion side.

In the electron beam deflecting device according to the first aspect of the present invention, since the hook of the locking piece does not protrude inward from the inner surface of the coil separator, when the horizontal deflection coil is mounted inside the coil separator from the display unit side. The hook does not contact the horizontal deflection coil and does not deform or scratch the coil. When the horizontal deflection coil is sufficiently inserted inside the coil separator, the hook is located at a position facing the window, so that the locking piece is pushed inward against the bias from the outside of the coil separator. The hook contacts the edge of the window at the center of the horizontal deflection coil that faces the neck, and is fixed so that the horizontal deflection coil does not come off the display. At the same time, the convex portion of the free end of the locking piece engages with the concave portion formed at the edge of the through hole, so that even if the locking piece is urged outward, it does not rebound. As a result, the horizontal deflection coil can be easily fixed to the coil separator without causing deformation or scratching of the coil.

[0014] In the above, it is preferable that the coil separator has a slit parallel to the edge of the through hole on the display portion side from the edge portion on the display portion side. Due to the formation of the slit, the edge of the through-hole bends toward the display unit side, and the protrusion of the free end of the locking piece and the recess of the edge of the through-hole are correspondingly bent. The engagement depth can be increased, and the engagement piece is prevented from coming off due to an impact or the like, and the locking piece is prevented from jumping outward.

According to the present invention, in the third aspect, the coil separator has a through-hole penetrating through the inside and outside of the side wall, and the through-hole extends from an edge on the neck portion side and has a free end in the direction of the display unit. A hook is formed on the inner surface of the locking piece, the hook being in contact with the edge of the horizontal deflection coil on the neck side of the window. An electronic beam deflector is provided which is urged inward so as to protrude inward from the inner surface of the separator, and wherein the locking piece has cutouts formed at both corners of its free end. I do.

In the electron beam deflecting device according to the third aspect, prior to inserting the horizontal deflection coil inside the coil separator, the toe of the jig is hooked on the both notches and the locking is performed against urging. The free end of the piece is fished out, and the horizontal deflection coil is inserted into the coil separator while the hook does not protrude inward from the inner surface of the coil separator. Therefore, the hook does not rub against the horizontal deflection coil during insertion and does not cause deformation or scratches. When the horizontal deflection coil is sufficiently inserted inside the coil separator, since the hook is located at a position facing the window, the jig is removed and the hook protrudes inward by the repulsive force of the locking piece. Then, the horizontal deflection coil can be fixed so as not to come out to the display unit side by making contact with the edge on the neck side of the window. That is, since the notch for receiving the tip of the jig is formed in the locking piece, the horizontal deflection coil can be easily fixed to the coil separator without deforming or scratching the coil.

[0017]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings using examples. Embodiment 1 FIG. 1 shows an electron beam deflector according to Embodiment 1 of the present invention. The electron beam deflecting device 1 is of a so-called ventless type, and is entirely formed into a tube whose diameter gradually increases from the neck side of the display tube (not shown) to the display portion side. , A coil separator 20, a vertical deflection coil 30, and a ferrite core 40.

The horizontal deflection coil 10 is the same as that used in the conventional ventless electron beam deflector shown in FIG. 8, and as shown by reference numeral 10 in FIG. Is formed into a saddle shape whose diameter gradually increases from the part side to the display part side. In this saddle-shaped surface, the electric wires are wound in bundles 13... 12 are formed.

The coil separator 20 is a plastic molded product formed into a tubular shape whose diameter gradually increases from the neck portion of the display tube (not shown) to the display portion side. Two ribs 29 are vertically symmetrically divided into two partitions, and the horizontal deflection coils 10 are arranged on the respective inner surfaces divided by the two ribs 29 so as to face each other in the vertical direction. ing.

A locking piece 21 is formed on each of the inner surfaces of the coil separator 20 divided into two by the two ribs 29. As shown in FIGS. 3 and 4, the locking piece 21 extends from the edge 22 a on the neck side into a through hole 22 formed to penetrate the inside and outside of the side wall of the coil separator 20. To form a free end 21b in the direction of the display section. On the inner surface of the locking piece 21, a hook 23 is formed which comes into contact with the edge 12a on the neck side of the window 12 formed in the horizontal deflection coil 10. The locking piece 21 is urged outward so that the hook 23 does not project inward from the inner surface of the coil separator 20.

The locking piece 21 further has a convex portion 24 at its free end 21b. On the other hand, a concave portion 25 that engages with the convex portion 24 is formed on an edge portion 22 b of the through hole 22 facing the convex portion 24 on the display unit side. Further, a slit 26 parallel to the edge 22b is formed further on the display portion side than the edge 22b on the display portion side of the through hole 22 of the coil separator.

When the horizontal deflection coil 10 is fixed to the inner surface of the coil separator 20, the horizontal deflection coil 10 is placed along the inner surface of the coil separator 20 from the display unit side. The edge 12a of the window is inserted until the edge of the window exceeds the contact surface of the hook 23. In this state, the tip of the locking piece 21 is pushed inward against the bias. As a result, the hook 23 projects inside the coil separator and comes into contact with the edge 12a of the horizontal deflection coil 10. At the same time, the convex portion 24 of the locking piece 21 gets over the edge 22 b of the through hole 22 on the display portion side and engages with the concave portion 25.

The hook 23 is outside the inner surface of the coil separator 20 until the locking piece 21 is pushed inward against the urging, so that the horizontal deflection coil 10 is The horizontal deflection coil 10 does not come into contact with the hook 23 when inserted along the inner surface of the hook. Therefore, the horizontal deflection coil 10 is not deformed or scratched by the contact with the hook 23.

When the tip of the locking piece 21 is pushed inward after the horizontal deflection coil 10 is inserted, the convex portion 24 of the free end 21 b of the locking piece rides over the display side edge 22 b of the through hole and the concave portion 25. Therefore, the locking piece 21 does not rebound regardless of being urged outward, and is fixed in a pushed-in state. At the same time, the pushed hook (23) comes into contact with the edge 12a of the horizontal deflection coil, and the horizontal deflection coil 10 is fixed so as not to come off toward the display section.

A slit 26 is formed parallel to the edge 22b of the coil separator 20 on the display section side from the display section side edge 22b of the through-hole, so that the free end 21b of the locking piece 21 is positioned inside. When pushed into, the edge portion 22b of the through hole is bent toward the display portion side, and the convex portion 24 of the locking piece easily gets over the edge portion 22b. After overcoming, the edge 22b returns to the original state by the repulsive force, so that the engagement between the convex portion 24 and the concave portion 25 is strongly maintained.

Second Embodiment FIG. 5 shows an electron beam deflector according to a second embodiment of the present invention. In the following description, elements having the same functions as those described in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted or simplified. The electron beam deflecting device 2 is of a ventless type similar to that of the first embodiment, and is formed in a tubular shape whose diameter gradually increases from the neck to the display portion, and a horizontal deflection coil 10 and a coil in order from the innermost layer. The separator 50, the vertical deflection coil 30, and the ferrite core 40 are each configured to be embedded in a fitting manner. The horizontal deflection coil 10 used here is the same as that used in the first embodiment.

The coil separator 50 is a plastic molded article having a tubular shape whose diameter gradually increases from the neck side toward the display section side. Two ribs 59 are formed axially symmetrically, and the horizontal deflection coils 10 are arranged on the inner surface divided by the two ribs 59 so as to face each other in the vertical direction.

An engagement piece 51 is formed on each of the inner surfaces of the coil separator 50 divided by the two ribs 59. As shown in FIGS. 6 and 7, the locking piece 51 extends from a rim 52 a on the neck side into a through hole 52 formed to penetrate the inside and outside of the side wall of the coil separator 50. A free end 51b is formed in the part direction. On the inner surface of the locking piece 51, a hook 53 is formed which is in contact with the edge 12a on the neck side of the window 12 formed in the horizontal deflection coil 10. The locking piece 51 is urged inward so that the hook 53 projects inward from the inner surface of the coil separator 50. Further, notches 54A and 54B are formed at both corners of the free end 51b of the locking piece 51, respectively.

In the electron beam deflecting device 2 according to the second embodiment, a jig shown in FIG. 8 is used to fix the horizontal deflection coil 10 on the inner surface of the coil separator 50. In FIG. 8, the jig 60 is formed in a substantially U-shape. One end 61 of the jig abuts the edge 52a on the neck side of the through hole through which the locking piece 51 extends, and the other end has a bifurcated shape. Each of the hooks (only one of the hooks 62A is shown in FIG. 8) has a notch (one of the notches in FIG. 8) formed at the free end 51b of the locking piece 51. 54A only), the free end 51b of the locking piece 51 can be hooked by the curved toes 63 of both hooks, and can be fished out against the bias.

When fixing the horizontal deflection coil 10 to the inner surface of the coil separator 50, first, both the hooks 62 A and 62 B (not shown) of the jig 60 are cut out 54 A, 54 B of the locking piece 51 (FIG. 7). 8), and the free end 51b of the locking piece 51 is hooked by each toe 63, and the other end 61 is brought into contact with the neck side edge 52a of the through hole 52, as shown in FIG. Then, the hook 55 is fished out against the urging until the hook 55 does not protrude inward from the inner surface of the coil separator 50. Next, while maintaining this state, the horizontal deflection coil 10 is moved from the display unit side along the inner surface of the coil separator 50 so that the edge 12 a of the horizontal deflection coil 10 The jig 60 is removed after insertion, the locking piece 51 is returned to its original state by the repulsive force, and the hook 53 is protruded inward to make contact with the edge 12a of the horizontal deflection coil. Then, the horizontal deflection coil 10 can be fixed so as not to come off to the display unit side.

In the electron beam deflecting device 2 described above, the jig 60 locks the hook 53 so as not to protrude inward from the inner surface of the coil separator while the horizontal deflection coil 10 is being inserted. While the coil 10 is inserted along the inside of the coil separator, the horizontal deflection coil 10 does not contact the hook 53. Therefore, the horizontal deflection coil 10 is not deformed or scratched by the hook 53. Further, after the insertion, the locking piece 51 returns to the original state by the repulsive force, so that the horizontal deflection coil 10 can be fixed so as not to come off toward the display unit side.

In the electron beam deflecting device 2, although the jig 60 is inserted into the inside from the gap between the free end 51 b of the locking piece and the display side edge 52 b of the through hole 52, Since the hooks 62A and 62B of 60 are respectively inserted into the notches 54A and 54B of the locking piece 51, the gap between the free end 51b of the locking piece 51 and the edge 52b of the through hole 52 facing the locking piece 51 is formed. As a result, the strength of the coil separator 50 can be improved, and the insulation between the horizontal deflection coil 10 and the vertical deflection coil 30 can be ensured.

[0033]

[Effect of the invention]

 In the first aspect of the present invention, the locking piece formed in the through-hole of the coil separator has a hook that comes into contact with an edge on the neck side of the window of the horizontal deflection coil, and the hook is located on the inner surface of the coil separator. A projection is urged outward so as not to protrude inward, and a projection is formed at a free end of the locking piece so as to engage with a recess formed at an edge of the through hole on the display section side. Therefore, the horizontal deflection coil can be easily fixed to the coil separator without deforming or scratching the coil. In claim 3 of the present invention, the locking piece formed in the through hole of the coil separator is urged inward so that the hook projects inward from the inner surface of the coil separator, and has a free end at the free end thereof. Since notches are formed at both corners, the locking piece can be easily caught using a jig, and the horizontal deflection coil can be fixed to the coil separator without deforming or scratching the coil. Can be.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a horizontal deflection coil used in the embodiment of FIG.

FIG. 3 is a partial sectional view of the embodiment of FIG. 1;

FIG. 4 is a plan view of the portion of FIG. 3 viewed from the outside.

FIG. 5 is a vertical sectional view showing another embodiment of the present invention.

FIG. 6 is a partial sectional view of the embodiment of FIG.

FIG. 7 is a plan view of the part of FIG. 6 viewed from the outside.

FIG. 8 is a cross-sectional view showing one embodiment of the portion shown in FIG. 6;

FIG. 9 is a perspective view of a general ventless type horizontal deflection coil.

FIG. 10 is a perspective view of a general bent horizontal deflection coil.

FIG. 11 is a schematic diagram of a display tube equipped with an electron beam deflector.

FIG. 12 is a perspective view showing a configuration of a general electron beam deflection device.

FIG. 13 is a sectional view showing a method of fixing a horizontal deflection coil in a conventional electron beam deflection device.

[Explanation of symbols]

1: Electron beam deflector 10: Horizontal deflection coil 12: Window 12a; Edge 13 (on the neck side) 13: Wire bundle 20: Coil separator 21: Locking piece 21b; Free end 22: Through hole 22a; Edge) 22b;
Edge (on display side) 23: hook 24: convex portion 25: concave portion 26: slit 29: rib 30: vertical deflection coil 40: ferrite core 2: electron beam deflector 50: coil separator 51: locking piece 51b; Free end 52: Through hole 52a; Edge (on neck side) 53: Hook 54A, 54B: Notch 59: Rib 60: Jig 61: End of (one of the jig) 62A: Hook 63: Toe P : Axis

Claims (3)

[Utility model registration claims] 1. A ventless type electron beam which is formed in a tubular shape and surrounds a path of an electron beam in a cathode ray display tube and gradually expands in diameter from a neck portion to a display portion side coaxially with the cathode ray display tube. A deflecting device, wherein the electron beam deflecting device is a coil separator formed in a tubular shape whose diameter gradually increases from the neck side of the cathode ray display tube toward the display unit, and the coil separators are vertically arranged along the inner wall thereof. A pair of horizontal deflection coils arranged opposite to each other, wherein the horizontal deflection coil is formed by winding an electric wire in a bundle and forming a through-hole-shaped window in the center thereof, and The separator has a through hole penetrating the inside and outside of the side wall, and a locking piece extending from the edge on the neck side and having a free end in the direction of the display section is formed in the through hole. On the inner surface of the horizontal deflection coil A hook that is in contact with an edge on the neck side of the coil separator is formed. The hook is urged outward so that the hook does not protrude inward from the inner surface of the coil separator. A convex portion is formed at a free end thereof, and a concave portion is formed at an edge portion of the through hole facing the convex portion on the display portion side, the concave portion engaging with the convex portion is formed inside the coil separator. When fixing the deflection coil, this horizontal deflection coil is inserted inside the coil separator, and after reaching the position where the edge of the window of the horizontal deflection coil comes into contact with the hook, the locking piece is pushed inward, The hook and the edge of the window are brought into contact with each other, and the projection of the locking piece and the recess of the through hole are engaged to prevent the locking piece from rebounding outward. Electron beam deflecting device. 2. The electron beam deflecting device according to claim 1, wherein the coil separator has a slit parallel to the edge of the through-hole on a display portion side from an edge portion on the display portion side. apparatus. 3. A ventless type electron beam which is formed in a tubular shape and surrounds a path of an electron beam in a cathode ray display tube and gradually expands in diameter from a neck portion to a display portion side coaxially with the cathode ray display tube. A deflecting device, wherein the electron beam deflecting device is a coil separator formed in a tubular shape whose diameter gradually increases from the neck side of the cathode ray display tube toward the display unit, and the coil separators are vertically arranged along the inner wall thereof. A pair of horizontal deflection coils arranged opposite to each other, wherein the horizontal deflection coil is formed by winding an electric wire in a bundle and forming a through-hole-shaped window in the center thereof, and The separator has a through-hole penetrating through the inside and outside of the side wall, and a locking piece extending from the edge on the neck side and having a free end in the direction of the display portion is formed in the through-hole. On the inner surface of the horizontal deflection coil A hook that is in contact with an edge on the neck side of the coil separator, and the locking piece is urged inward so that the hook protrudes inward from the inner surface of the coil separator; In
Notches are formed at both corners of the free end, and when fixing the horizontal deflection coil inside the coil separator, the toe of a jig is hooked on both of the notches and the locking piece is opposed to bias. Fishing out the free end of
The horizontal deflection coil is inserted into the coil separator in a state where the hook does not protrude inward from the inner surface of the coil separator, and when the edge of the window of the horizontal deflection coil reaches a position where it comes into contact with the hook, the jig is removed. The electron beam deflecting device, wherein the hook is protruded inward and the hook is brought into contact with an edge of the window.