JP2577307Y2 - Deflection yoke device - Google Patents

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 in which a back bobbin is mounted on the tail side of a deflection yoke.

[0002]

2. Description of the Related Art As is well known, a deflection yoke attached to a cathode ray tube of a television receiver or a display device is
A pair of horizontal deflection coils are mounted on the top side and bottom side along the inner peripheral surface of the bobbin shaped like a bosh by combining the half-split bobbins, and a pair of vertical deflection coils are mounted outside the bobbin. is there. Usually, one or two pairs of FC (Field Control) coils are attached as correction coils to the enlarged diameter portion on the tail side of the bobbin of this type of deflection yoke.

[0003]

However, when the FC coil is mounted on the bobbin, since the bobbin is divided in half as described above, the horizontal deflection coils are mounted on the upper and lower bobbins, and the upper and lower sides are mounted. It is inconvenient that the correction coil cannot be attached to the enlarged diameter portion only after the bobbins are assembled together. In this case, there is a problem that the mounting and wiring work of the correction coil becomes very complicated and complicated, and the workability is very poor.

[0004] The applicant has repeatedly studied to solve such a problem and succeeded in developing an innovative deflection yoke device. In the developed deflection yoke device, a back cover bobbin is detachably mounted on the enlarged diameter portion on the tail side of the bobbin of the deflection yoke, and a correction coil is mounted on the back cover bobbin. With this development device, the correction coil can be attached to the back cover bobbin in advance, so simply attaching the back cover bobbin to the deflection yoke bobbin completes the attachment of the correction coil to the deflection yoke, and the wiring work is very easy. It will be easier. However, in this development device, since the lead wire of the correction coil attached to the back cover bobbin is in a free state, it loosens or protrudes from the back cover bobbin, and the back cover bobbin is enlarged. When fitting into the diameter part, the lead wire of the correction coil is pinched between the wall surface of the enlarged diameter part and the wall surface of the back cover bobbin, or hooked on the hand to break the wire, There is a problem that a short circuit occurs due to contact with a deflection coil or the like.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to make a lead wire of a correction coil provided on a back cover bobbin mounted on a tail side of a deflection yoke slack or protrude. Accordingly, it is an object of the present invention to provide a deflection yoke device which does not cause a problem of disconnection or short circuit.

[0006]

The present invention is configured as follows to achieve the above object. That is, in the deflection yoke device of the present invention, a back cover bobbin is mounted on the tail side of the deflection yoke, the back cover bobbin is provided with a back plate facing the rear end surface of the tail side of the deflection yoke, and an edge of the back plate. projects formed and a peripheral wall attached to the tail side of the deflection yoke from the correction coil on the inner surface of the back plate of the back cover bobbin their
The central axis of the coil is disposed in parallel with the inner surface of the back plate, and a coil receiving hole is provided on the back plate at a position where the correction coil is disposed, and the correction coil is received in the coil receiving hole. The rear side of the correction coil is disposed so as to protrude from the coil receiving hole to the outside rear of the back plate, and a rib for stopping a lead of the correction coil is provided on the wall surface of the back cover bobbin. I have.

[0007]

In the present invention having the above construction, a correction coil is disposed on the back cover bobbin mounted on the tail side of the deflection yoke, and the lead of the correction coil is fixed to a rib provided on the back cover bobbin. Prevents sagging and protrusion.

[0008] The correction coil installed on the back bobbin is the back cover
It is housed in the coil housing hole provided on the back plate of the bobbin.
And the back side of the coil is outward and rearward from the coil receiving hole.
The rear end of the deflection yoke on the tail side
The distance between the surface and the back plate of the back cover bobbin is the coil accommodation hole of the back plate
Enough to accommodate the front side of the correction coil that protrudes inward
Attached to the deflection yoke because it is only necessary to secure the space between them
The back bobbin is prevented from becoming bulky and the deflection yaw
This makes it possible to reduce the size of the locking device.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a deflection yoke according to an embodiment of the present invention. As is well known, the deflection yoke 10 is a bosh bobbin 11
A pair of horizontal deflection coils (not shown) are mounted on the top side and the bottom side along the inner peripheral surface, and a pair of vertical deflection coils (not shown) are mounted outside the bobbin 11.
An enlarged diameter portion 13 is provided on the head side of the bobbin 11, and an enlarged diameter portion 12 is formed on the tail side. This deflection yoke 10
Of the enlarged diameter portion 12 is mounted is back lid bobbin 1, the compensation coil 3 is disposed on the back plate 16 of the back lid bobbin 1.

The back cover bobbin 1 is offset from the edge of the back plate 16.
A peripheral wall 17 protruding toward the tail side of the direction yoke 10 is provided.
An engaging claw 14 is provided at a tip end of the peripheral wall 17 , and is configured to be detachably mounted by fitting with the enlarged diameter portion 12 on the tail side.

FIG. 1 shows a main part structure of the back cover bobbin 1 as viewed from the inside.
Are mounted on the inner surface 15 of the back plate 16 of the back cover bobbin 1, and a total of four correction coils 3 are provided in a pair on the upper, lower, left and right sides.
A posture in which the center axis of the coil is parallel to the inner surface of the back plate 16
It is arranged in. The back plate 16 is provided with a coil receiving hole 18 at a position where each correction coil 3 is provided, and the correction coil 3 is received in the coil receiving hole 18, as shown in FIG.
The rear side of the correction coil 3 projects from the coil receiving hole 18 to the rear outside of the back plate 16, and the front side of the correction coil 3 projects from the coil receiving hole 18 to the front inside of the back plate 16. The front side of the correction coil 3 is accommodated in the space between the rear end face 19 of the deflection yoke 10 and the back plate 16 when the back cover bobbin 1 is mounted on the tail side of the deflection yoke 10.

[0012] The outgoing lead 5 of the correction coil 3 is stopped by a plurality of ribs 6 provided on the inner wall surface 15 of the back lid bobbin 1, or hung on the rib 6, with or tied, the shortest in the desired direction Since the lead is guided at a distance and the free state is eliminated, the drawer lead 5 is connected to the terminal plate 2 without sagging or protruding outside the back cover bobbin 1.

FIG. 3 shows an example of the shape of a rib 6 for stopping the lead 5 of the correction coil 3 in this embodiment.
To stop it. FIG. 4 shows a rib 6 having another shape.
As shown in (b), the structure is such that it can be used by being hooked on the claw 9 at the tip of the rib 6.

In this embodiment, the rib 6 for stopping the lead 5 of the correction coil 3 is provided on the inner wall surface 15 of the back cover bobbin 1 mounted on the tail side of the deflection yoke. Since it is stopped and guided to the terminal plate 2, it does not sag or protrude outside the back cover bobbin 1, and when the back cover bobbin 1 is fitted into the enlarged diameter portion, it is caught between the wall surfaces of the both or caught on the hand. Or short circuit or disconnection can be prevented.

The present invention is not limited to the above embodiment, but can take various embodiments. For example, in the above-described embodiment, the shape of the rib 6 for stopping the lead 5 of the correction coil 3 is a shape suitable for hooking or tying a wire as shown in FIGS. As shown in FIG. 5, it can be arbitrarily designed according to the specifications so as to have a shape suitable for guiding along the lead 5 while holding it down.

Although the rib 6 is formed integrally with the back cover bobbin 1, the rib 6 may be fixed by bonding or fitting.

[0017]

[Effect of the Invention] In the present invention , the back plate of the back cover bobbin mounted on the tail side of the deflection yoke is used as a fixing plate for mounting the correction coil.
Since it was made to function, I attached a correction coil
It is not necessary to provide a special plate for
The configuration can be simplified. In addition, the correction coil
The correction coil on the back bobbin side
Can be placed and the back cover bobbin
After connecting to the directional yoke, the connection work is done on the terminal on the deflection coil side.
Only needs to be connected to the wire on the correction coil side.
It is very easy to do the work and the productivity
Can be improved.

Further , since the correction coil is disposed on the back cover bobbin and the rib for stopping the lead of the correction coil is provided, the lead is appropriately stopped and guided by the rib, and the slack is provided. Since it does not protrude, the back cover bobbin does not get caught between the wall surfaces of the deflection yoke or is caught on a hand or an object when the back cover bobbin is mounted on the tail side of the deflection yoke.

Furthermore, a coil is provided on the inner surface of the back plate of the back cover bobbin.
The correction coil arranged with the central axis parallel is accommodated in the coil accommodation hole provided on the back plate of the back cover bobbin, and the rear side of the coil projects outward and rearward from the coil accommodation hole. Therefore, the space between the rear end surface of the deflection yoke on the tail side and the back plate of the back cover bobbin only needs to secure a space enough to accommodate the front side of the correction coil projecting inward from the coil housing hole of the back plate. Also, the bulkiness of the back cover bobbin mounted on the deflection yoke is prevented, and the size of the deflection yoke device can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a configuration example of a main part of a back cover bobbin constituting a deflection yoke device according to the present invention.

FIG. 2 is an explanatory diagram of a deflection yoke device according to the present embodiment.

FIG. 3 is an explanatory diagram of a rib shape provided on a back cover bobbin of the embodiment.

FIG. 4 is an explanatory view of another shape of the rib of the embodiment.

FIG. 5 is an explanatory view of still another shape of the rib of the embodiment.

[Explanation of symbols]

 Reference Signs List 1 back cover bobbin 2 terminal board 3 correction coil 5 lead lead 6 rib

Claims (1)

(57) [Scope of request for utility model registration] A back cover bobbin is mounted on the tail side of the deflection yoke. The back cover bobbin is opposed to a rear end surface of the deflection yoke on the tail side, and the deflection yoke projects from an end edge of the back plate. the formation and a peripheral wall attached to the tail side, the correction coil in the coil on the inner surface of the back plate of the back cover bobbin
The center axis is arranged in parallel with the inner surface of the back plate, and the back plate is provided with a coil receiving hole at a position where the correction coil is disposed, and the correction coil is received in the coil receiving hole and the correction coil is provided. A deflection yoke device, wherein the rear side of the back yoke is disposed so as to protrude from the coil receiving hole to the outside rear of the back plate, and a rib is provided on a wall surface of the back cover bobbin for stopping a lead for drawing out a correction coil.