JPH11307013A - Deflection yoke device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deflection yoke device where fracture of a board is prevented even when strong force is applied to it. SOLUTION: A board 5 is substantially contacted to protrusions 1c of a flange 1a1 and mounted to it, with the lower end of it being retained by a pair of ribs 10a, 10b. A protective cover 16 covers and protects the board 5. Ribs 16b are formed in the positions opposed to the protrusions 1c and the rib 10b, in the internal surface of the protective cover 16. The board 5 is pinched by the ribs 16b, protrusions 1c and the rib 10b, which prevents the board 5 from being applied with a force damaging it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke device having a terminal board for connecting a board or lead wire on which circuit components are mounted, and a protective cover for protecting the board and the terminal board. The present invention relates to a deflection yoke device capable of preventing damage to these substrates and terminal plates.

[0002]

2. Description of the Related Art FIG. 5 is a partial side view showing an example of a conventional deflection yoke device in a partially broken state, and FIG. 6 is a perspective view showing an example of a conventional deflection yoke device. 5 and 6, this deflection yoke device has a large diameter portion on one side (lower side in the figures) and another side (upper side in the figures), for example, by a separator 1 in which a pair of semi-annular devices are combined. It is formed in a funnel shape with a small diameter portion. The large diameter portion is on the screen (face) side of the cathode ray tube, and the small diameter portion is on the neck side.

A saddle-type horizontal deflection coil 2 (shown in FIG. 5) is mounted on the inner surface of the separator 1, and a saddle-type vertical deflection coil 3 is mounted on the outer surface. The deflection coil 3 is electrically insulated and held. A core 4 made of ferrite or the like is mounted on the outer surface of the vertical deflection coil 3.

A deflection yoke device having such a configuration usually requires a circuit for correcting deflection characteristics, and a substrate 5 on which such a circuit is mounted is mounted on a side surface of the separator 1. A method for fixing the substrate 5 to the separator 1 will be described later. Since a high voltage is applied to the circuit of the substrate 5, the substrate 5 is covered with a protective cover 6 made of an insulating material for preventing electric shock and protecting the circuit and the like. FIGS. 5 and 6 show a state immediately before the protective cover 6 is mounted on the substrate 5.

[0005] A plurality of flanges 1a1, 1a2, 1a3 (hereinafter referred to as neck side flanges) 1a are provided on the neck side of the separator 1, and flanges (hereinafter, face side flanges) are provided on the face side. 1)
b is provided. A four-pole correction coil 7 called a pair of 4P coils is fitted on the neck-side flange 1a1 of the neck-side flange 1a. Further, claws 8a and 8b (shown in FIG. 5) for mounting the substrate 5 on the separator 1 are provided on the flange 1a3 closest to the face side by integral molding. The board 5 is formed with holes for engaging the claws 8a and 8b.

[0006] The board 5 is mounted on the face side flange 1b.
Ribs 10a, 10b for holding the face side end of the
Is provided by integral molding, and the face-side end of the substrate 5 is fitted and held in a groove formed by the ribs 10a and 10b. The lower end of the substrate 5 is
a, 10b, and pushes the substrate 5 in the direction of the separator 1 (the direction of arrow A), the claws 8a, 8b
And the substrate 5 is fixed to the separator 1. Thus, the substrate 5 is held on the separator 1 by the ribs 10a, 10b and the claws 8a, 8b.

A plurality of pins 9 for connecting lead wires are press-fitted into the substrate 5, and these pins 9 are connected to the lead wire 7a of the correction coil 7, the lead wire 2a of the horizontal deflection coil 2, and the vertical deflection coil. The lead wire 3a of the coil 3 is tangled. The pins 9 and the lead wires 2a, 3a, 7a are soldered and electrically and mechanically connected to the substrate 5. The protective cover 6 is mounted on the board 5 after the connection of the lead wires 2a, 3a, 7a to the board 5 is completed.

At the end of the flange 1a1 on the substrate 5 side, a plurality of projections 1c (here, two locations) are provided by integral molding, and the substrate 5 comes into contact with or close to the projections 1c. Contact). In addition,
The portion of the substrate 5 where the projection 1c contacts or approaches is a place where there is no pattern or soldering. A slight gap is formed between the end of the flange 1a1, 1a2, 1a3 on the substrate 5 side where the projection 1c is not provided and the substrate 5. This is because a pattern is formed or solder is also applied to the back surface side (separator 1 side) of the substrate 5, so that the end portions of the flanges 1 a 1, 1 a 2, 1 a 3 on the substrate 5 side are slightly separated from the substrate 5. It is.

Further, the protective cover 6 is formed in a box shape with one surface open, and a plurality of elastic claws 6a are integrally formed at the upper and lower ends of the open surface. The inner surface of the protective cover 6 has ribs 6b at the upper and lower ends.
However, a rib 6c is provided at the center. The ribs 6c are formed inside the front and rear surfaces of the protective cover 6 in FIG.

When the protective cover 6 is attached to the substrate 5, first, as shown in FIG. 6, a claw 6 a at the end on the face side (lower end) is hooked on the lower end of the substrate 5. The upper part is the direction of the separator 1 (the direction of arrow A)
And the nail 6a at the neck side end (upper end) is
Hook on top of Then, the end of the substrate 5 is claw 6a.
And between the ribs 6b and 6c. That is,
The protective cover 6 is held by the substrate 5 so as to hold the substrate 5.

In the example described above, the deflection yoke device has the protection cover 6 mounted on the substrate 5 on which the electric circuit is mounted. However, the deflection yoke has the protection cover mounted on a terminal plate for connecting lead wires. In the device, the protective cover is attached to the terminal plate in a similar configuration.

[0012]

In the conventional deflection yoke device constructed as described above, when the protective cover 6 is mounted on the substrate 5, the deflection yoke device is carried, or the deflection yoke device is carried. In this case, if a strong force is applied to the deflection yoke device, the substrate 5 may be broken.

This problem will be described with reference to FIG. FIG. 7 is a partial plan view of the deflection yoke device shown in FIGS. 5 and 6 as viewed from the neck side. As shown in FIG. 7, in the conventional deflection yoke device, a rib 6b formed on the inner surface of the protective cover 6 and a convex portion 1c formed on the flange 1a1.
7 is shifted from the position shown in FIG.
7, a force is applied to the substrate 5 with the point a in FIG. 7 as a fulcrum and the point b as an action point.
As a result, as shown by the broken line, the substrate 5 was sometimes damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to provide a deflection yoke device in which a plate-like member (substrate, terminal plate) is not damaged even when a strong force is applied. And

[0015]

According to the present invention, in order to solve the above-mentioned problems of the prior art, (1) one part is formed as a large diameter part and the other is formed as a small diameter part in a funnel shape. A separator having a first flange on the side of the portion, a second flange on the side of the large diameter portion, the first flange having a convex portion formed partially at an end thereof, In a deflection yoke device including a plate-shaped member that is attached to or adjacent to the protrusion on a side portion of a separator and a protective cover that covers the plate-shaped member and protects the plate-shaped member, (2) A deflection yoke device, wherein a rib that is in contact with or close to the plate member is formed at a position on the inner surface of the protective cover that faces the protrusion via the plate member. ) One is a large diameter part and the other is a small diameter part, funnel-shaped Is formed having a first flange on the small-diameter portion, a second flange on the large diameter portion,
A separator having a pair of ribs formed of first and second ribs formed on the second flange; and a plate-like member having an end held by the pair of ribs on a side portion of the separator. In a deflection yoke device including a member and a protection cover that covers the plate member and protects the plate member, the deflection yoke device faces at least one of the pair of ribs via the plate member on an inner surface of the protection cover. A deflection yoke device, wherein a third rib that is in contact with or close to the plate-like member is formed at a position where
(3) one is a large-diameter portion and the other is a small-diameter portion, which is formed in a funnel shape, has a first flange on the small-diameter portion side, and has a second flange on the large-diameter portion side; A separator formed by forming a pair of ribs including a first rib and a second rib on the second flange; And a plate-shaped member whose end is held by the pair of ribs and which is in contact with or close to the protrusion, and which protects the plate-shaped member by covering the plate-shaped member. A deflecting yoke device provided with a protective cover, wherein a third rib in contact with or proximate to the plate member is provided on the inner surface of the protective cover at a position facing the convex portion via the plate member. Formed on the inner surface of the protective cover via the plate member. Of at least one opposite to the position of the ribs, there is provided a deflection yoke apparatus characterized by the formation of the fourth rib to or close contact with the plate-like member.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A deflection yoke device according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially cutaway perspective view showing one embodiment of the deflection yoke device of the present invention, FIG. 2 is a partially cutaway side view showing one embodiment of the deflection yoke device of the present invention, and FIG. FIG. 4 is a partially broken perspective view showing one embodiment of the deflection yoke device of the present invention, and FIG. 4 is a partial perspective view for explaining a modification of the deflection yoke device of the present invention. 1 to 4, the same parts as those in FIGS. 5 to 7 are denoted by the same reference numerals.

1 to 3, this deflection yoke device has a large diameter portion on one side (lower side in the figures) and the other (lower side in the figures), for example, by a separator 1 in which a pair of semi-annular devices are combined. The upper part) is formed in a funnel shape having a small diameter part. The large diameter portion is on the screen (face) side of the cathode ray tube, and the small diameter portion is on the neck side.

A saddle type horizontal deflection coil 2 (shown in FIG. 2) is mounted on the inner surface of the separator 1, and a saddle type vertical deflection coil 3 is mounted on the outer surface. The deflection coil 3 is electrically insulated and held. A core 4 made of ferrite or the like is mounted on the outer surface of the vertical deflection coil 3.

The deflection yoke device thus configured usually requires a circuit for correcting deflection characteristics, and a substrate 5 on which such a circuit is mounted is mounted on the side surface of the separator 1. A method for fixing the substrate 5 to the separator 1 will be described later. Since a high voltage is applied to the circuit of the substrate 5, the substrate 5 is covered with a protective cover 16 made of an insulating material for preventing electric shock and protecting the circuit and the like. Note that, in FIG.
Is not mounted on the substrate 5.

A plurality of flanges 1a1, 1a2, 1a3 (hereinafter referred to as neck side flanges) 1a are provided on the neck side of the separator 1, and flanges (hereinafter, face side flanges) are provided on the face side. 1)
b is provided. A four-pole correction coil 7 called a pair of 4P coils is fitted on the neck-side flange 1a1 of the neck-side flange 1a. A claw 8a (shown in FIGS. 2 and 3) for mounting the substrate 5 on the separator 1 is provided on the flange 1a3 closest to the face side by integral molding. The substrate 5 has a hole for engaging the claw 8a. In the present embodiment, a pair of claws 8a are arranged in parallel with the surface of the flange 1a. However, as shown in FIG. 5, the claws 8b arranged in the vertical direction of the claws 8a (in the tube axis direction) are provided. It is good also as a structure provided.

The board 5 is mounted on the face side flange 1b.
Ribs 10a, 10b for holding the face side end of the
Are provided by integral molding, and a face-side end (lower end) of the substrate 5 is fitted and held in a groove formed by the ribs 10a and 10b. When the lower end of the substrate 5 is held by the ribs 10a and 10b and the substrate 5 is pushed in the direction of the separator 1, the claws 8a engage with the holes provided in the substrate 5, and the substrate 5 is fixed to the separator 1. Thus, the substrate 5 is held on the separator 1 by the ribs 10a, 10b and the claws 8a.

A plurality of pins 9 (shown in FIGS. 2 and 3) for connecting lead wires are press-fitted into the substrate 5, and these pins 9 are connected to the lead wires 7a of the correction coil 7 and the horizontal deflection. The lead wire (not shown) of the coil 2 and the vertical deflection coil 3
Lead wire 3a. Pin 9 and lead 3
The lead wires a, 7a and the horizontal deflection coil 2 are soldered and electrically and mechanically connected to the substrate 5.
The protective cover 16 is attached to the board 5 after the connection of the leads 3a, 7a and the lead of the horizontal deflection coil 2 to the board 5 is completed. Note that, in FIG.
Are omitted from the figure.

At the end of the flange 1a1 on the substrate 5 side, a plurality of projections 1c (here, two locations) are provided by integral molding, and the substrate 5 comes into contact with or close to the projections 1c. Contact). In addition,
The portion of the substrate 5 where the projection 1c contacts or approaches is a place where there is no pattern or soldering. A slight gap is formed between the end of the flange 1a1, 1a2, 1a3 on the substrate 5 side where the projection 1c is not provided and the substrate 5. This is because a pattern is formed or solder is also applied to the back surface side (separator 1 side) of the substrate 5, so that the end portions of the flanges 1 a 1, 1 a 2, 1 a 3 on the substrate 5 side are slightly separated from the substrate 5. It is.

Further, the protective cover 16 is formed in a box shape with one surface opened, and a plurality of elastic claws 16a (shown in FIG. 2) are integrally formed at upper and lower ends of the open surface. Have been. Further, ribs 16b are provided on the inner surface of the protective cover 16 at the upper and lower ends. The inside of the front and back surfaces of the protective cover 16 in FIG.
Although the rib corresponding to the rib 6c shown in FIG. 5 may or may not be provided, it can be said that it is more preferable not to provide the rib corresponding to the rib 6c shown in FIG. This will be described in detail later.

When attaching the protective cover 16 to the substrate 5, first, hook the claw 16 a of the face side end (lower end) on the lower end of the substrate 5, and then put the upper part of the protective cover 16 in the direction of the separator 1. Then, the nail 16 a at the neck side end (upper end) is hooked on the upper end of the substrate 5. Then, the end of the substrate 5 fits into a gap 6d (shown in FIG. 2) between the claw 16a and the ribs 16b and 6c. That is, the protective cover 16 is held by the substrate 5 so as to hold the substrate 5.

In the deflection yoke device of the present invention, unlike the conventional example, the rib 16b formed on the inner surface of the protective cover 16 is formed as follows. As shown in FIG. 1, the rib 16 b on the inner surface of the upper surface in the drawing of the protective cover 16 is formed so as to be located at a position facing the convex portion 1 c of the flange 1 a 1 via the substrate 5. This rib 16
The tip of b is in contact with or close to (substantially in contact with) the substrate 5.

Further, the rib 16b on the inner surface of the lower surface of the protective cover 16 in the figure is formed so as to be located inside the ribs 10a and 10b for holding the lower end of the substrate 5. In this example, the rib 16b on the inner surface of the lower surface in the drawing of the protective cover 16 is opposed to the rib 10b via the substrate 5, and the tip of the rib 16b is in contact with or close to (substantially) the substrate 5. Contact). This rib 1
6b is brought into contact with or close to the rib 10a, and the rib 16b
The same effect can be obtained by indirectly bringing the front end portion of the substrate close to the substrate 5. Even with such a configuration, the rib 16b
Is in a category close to the substrate 5.

In this way, the substrate 5 is sandwiched between the rib 16b on the inner surface of the upper surface of the protective cover 16 in the figure and the convex portion 1c of the flange 1a1, and the lower surface of the protective cover 16 in the figure. Rib 16b and rib 1 on the inner surface of
0b, and even if a force is applied to the protective cover 16 in the direction of the substrate 5, the substrate 5 does not receive such a force as to damage the substrate 5 as described with reference to FIG. .

As described above, it is preferable that no rib corresponding to the rib 6c shown in FIG. 5 be provided inside the front and rear sides of the protective cover 16 in FIG. This is because when a force is applied to the protective cover 16 in the direction of the substrate 5, the ribs apply a force to the front and rear ends of the substrate 5 in FIG. 2. Therefore, a rib corresponding to the rib 6c shown in FIG.
It is desirable to increase the interval between the two. However, the above-described opposing relationship between the upper rib 16b and the convex portion 1c and the opposing relationship between the lower rib 16b and the rib 10b greatly reduce the force applied to the substrate 5.
Even if a rib corresponding to the rib 6c shown in FIG. 5 is provided, breakage of the substrate 5 can be significantly reduced.

The shape of the rib 16b of the protective cover 16 is not limited to the embodiment shown in FIGS.
Other shapes may be used. In FIG. 4, (A) corresponds to the embodiment as shown in FIGS. In FIG. 4A, the rib 16b is formed such that the surface of the plate-like rib 16b is orthogonal to the surface of the projection 1c. In FIG. 4, (B) shows the rib 16b formed so that the surface of the plate-like rib 16b is parallel to the surface of the projection 1c. The rib 16b shown in FIG.
b '. The end face of the rib 16b 'on the substrate 5 side and the end face of the protrusion 1c on the substrate 5 side are opposed to each other via the substrate 5.

In the configuration shown in FIG. 4B, the protective cover 1
6 is displaced in the tube axis direction with respect to the substrate 5, the end face of the rib 16 b ′ on the substrate 5 side and the substrate 5
Side end face will be displaced. Therefore, it can be said that FIG. 4A is a more preferred embodiment. Further, in FIG. 4, (C) shows a columnar rib 16b ″ instead of the plate-like rib 16b.
The ribs 16b 'and 16b "shown in (B) and (C) can be used as the rib 16b facing the rib 10b.

In the present embodiment described above, the lower end of the substrate 5 is held by the ribs 10a and 10b.
There is also a configuration in which the substrate 5 is held only by the claws 8a and 8b as described in FIG. In such a case, the substrate 5 may be sandwiched between the rib 16b on the inner surface of the upper surface of the protective cover 16 in the figure and the convex portion 1c of the flange 1a1.

In the above-described embodiment, the deflection yoke device in which the protective cover 16 is mounted on the substrate 5 on which the electric circuit is mounted is shown. However, other plates on which the electric circuit is not mounted, for example, lead wires In a deflection yoke device in which a protective cover is attached to a terminal plate for connecting the
A configuration similar to the present invention can be adopted. Further, in this embodiment, a so-called saddle / saddle type deflection yoke device has been described, but it goes without saying that a saddle / toroidal type deflection yoke device may be used. The present invention is applicable to all deflection yoke devices that protect a plate-like member with a protective cover.

[0034]

As described above in detail, in the deflection yoke device of the present invention, the rib is formed on the inner surface of the protective cover, and the rib is brought into contact with or close to the plate-like member (substrate, terminal plate). And the plate-like member is sandwiched between these ribs, so that the plate-like member can be extremely damaged when a strong force is applied to the deflection yoke device. It can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing one embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing one embodiment of the present invention.

FIG. 3 is a partially broken perspective view showing one embodiment of the present invention.

FIG. 4 is a partial perspective view for explaining a modification of the present invention.

FIG. 5 is a partially cutaway side view showing a conventional example.

FIG. 6 is a perspective view showing a conventional example.

FIG. 7 is a partial plan view for explaining a problem of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Separator 1a, 1a1, 1a2, 1a3 Neck side flange 1b Face side flange 1c Convex part 2 Horizontal deflection coil 3 Vertical deflection coil 4 Core 5 Substrate (plate-like member) 7 Correction coil 8a Claw 9 Pin 10a, 10b, 16b, 16b ', 16b "Rib 16 Protective cover 16d Clearance

Claims (3)

[Claims] 1. A large diameter part and a small diameter part are formed in a funnel shape, and a first flange is provided on the small diameter part side and a second flange is provided on the large diameter part side. The first flange includes a separator having a convex portion partially formed at an end thereof, and a plate-like member attached to or adjacent to the convex portion on a side of the separator. A deflection yoke device provided with a protective cover that covers the plate-shaped member and protects the plate-shaped member, wherein the plate is disposed at a position on an inner surface of the protection cover facing the convex portion via the plate-shaped member. A deflection yoke device, wherein a rib is formed in contact with or in proximity to the member. 2. A large diameter part and a small diameter part are formed in a funnel shape. The small diameter part has a first flange, and the large diameter part has a second flange. The second flange is provided with a separator formed with a pair of first and second ribs, and an end portion is attached to a side portion of the separator with the end held by the pair of ribs. In a deflection yoke device provided with a plate-shaped member and a protective cover that covers the plate-shaped member and protects the plate-shaped member, at least one of the pair of ribs via the plate-shaped member on the inner surface of the protective cover. 3. A deflection yoke device, wherein a third rib which is in contact with or close to the plate-like member is formed at a position facing the plate-like member. 3. A large diameter portion and a small diameter portion are formed in a funnel shape, the first having a first flange at the small diameter portion, and the second having a second flange at the large diameter portion. A separator formed by forming a pair of ribs including a first rib and a second rib on the first flange; A plate-like member having an end held by the pair of ribs and being attached to or proximate to the protrusion, and a plate-like member covering the plate-like member, on a side portion of the separator. A deflecting yoke device provided with a protective cover that protects the plate-like member at a position on the inner surface of the protective cover that faces the convex portion via the plate-like member. Forming a rib, through the plate-shaped member on the inner surface of the protective cover. A deflection yoke device, wherein a fourth rib is formed at a position facing at least one of the pair of ribs so as to be in contact with or close to the plate-shaped member.