JPH0573905U - Structure of differential coil bobbin - Google Patents

Abstract

(57) [Abstract] [Purpose] The differential coil bobbin 1 for the deflection yoke is used as the terminal plate 1.
Securely fix it to 0 and enable automatic winding of the differential coil. [Structure] A frame part 3 around which the differential coil 2 is wound, a plurality of flange parts 4 that come into contact with the surface of the terminal plate 10 when the frame part 3 is connected to a terminal, and an end part separated from the surface of the terminal plate 10. A plurality of legs 5 are integrally formed on the frame, a pin 6 is implanted in the end of the leg 5, and the lead wire of the differential coil 2 is entangled in the pin 6 and then the pin 6 is attached to the terminal plate 10. It was made to penetrate into and soldered.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a differential coil bobbin of a deflection yoke.

[0002]

[Prior art]

 A cathode ray tube such as a television receiver has a deflection yoke for deflecting an electron beam emitted from an electron gun built in a rear neck in a vertical direction and a horizontal direction at the boundary between the neck and the funnel. Installed from. In this deflection yoke, a horizontal deflection coil is wound inside a trumpet-shaped resin bobbin, and a terminal plate is attached to the rear end (small diameter portion) of the bobbin, and the inductance of the horizontal deflection coil is attached to this terminal plate. A differential coil bobbin wound with a differential coil for adjusting is attached.

FIG. 3 shows a state in which a conventional deflection yoke differential coil bobbin 21 is fixed to a terminal plate 30. The differential coil bobbin 21 includes a frame portion 23 around which the differential coil 22 is wound, and a mounting portion 24 integrated with the frame portion 23 for fixing the frame portion 23 to the terminal plate 30. A claw 25 is formed at the tip of the mounting portion 24, and the differential coil bobbin 21 is fixed to the terminal plate 30 by passing the claw 25 through a hole 30 a provided in the terminal plate 30 and projecting it to the back surface.

[0004]

[Problems to be solved by the device]

 As described above, the fixing method by fitting the claws and the holes cannot fix the differential coil bobbin 21 firmly to the terminal plate 30, and thus has a drawback that rattle is likely to occur. Therefore, the claws 25 are bonded to the terminal board 30 with an adhesive after the assembly.

Further, conventionally, each lead wire of the end portion of the differential coil 22 wound around the frame portion 23 is twisted to a terminal 26 provided near the differential coil bobbin 21. Therefore, the terminal plate 30 needs a space for providing the terminal 26, and the work of twisting the lead wire to the terminal 26 must be separate from the work of winding the differential coil. This hinders the automatic winding of the differential coil.

The present invention has been made in view of the above points, and the deflection coil differential coil bobbin can be firmly fixed to the terminal plate, and the differential coil bobbin ends can be connected to the differential coil bobbin. It is an object of the present invention to provide a differential coil bobbin for a deflection yoke that can be connected to a part of the differential coil and can automatically wind the differential coil.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a frame part around which a differential coil is wound, and a plurality of collar parts which are integral with the frame part and whose ends abut on the terminal plate when attached to the terminal plate. A frame having a plurality of legs integrally formed with the frame part, the end of which is separated from the terminal plate when attached to the terminal plate and a pin penetrating the terminal plate is planted at the end part; It is characterized in that an end lead wire of the differential coil wound around the portion is entangled with the pin.

[0008]

[Action]

 With the above configuration, the deflection yoke differential coil bobbin can be firmly fixed to the terminal plate by soldering the pins of the collar portion and the foot portion and the terminal plate to the terminal plate. The wire can be entwined with this pin and then the pin can be inserted into the terminal board.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a differential coil bobbin 1 of a deflection yoke according to the present invention attached to a terminal board 10, and FIG. 2 is a front view thereof.

The main body of the differential coil bobbin 1 according to the present invention is a cylindrical frame portion 3 around which the differential coil 2 is wound. By moving a core (not shown) inserted in the frame portion 3 in the axial direction of the frame portion 3, the inductance of the horizontal deflection coil of the deflection yoke can be finely adjusted.

A frame portion for fixing the bobbin to the terminal board 10 via a plurality of flange portions 4 and pins 6 for partitioning the differential coil 2 when the differential coil 2 is wound around the frame portion 3. It extends integrally from 3 at right angles to its axis. In the illustrated embodiment, two flanges 4 and two feet 5 are provided on each side of the frame 3, and four flanges 4 and one foot 5 are provided on the opposite side. Although two types of flanges 4 having different thicknesses are shown, the dimensions can be freely determined.

The lower end of the collar 4 is in contact with the surface of the terminal plate 10, but the lower end of the foot 5 is separated from the surface of the terminal plate 10 by a distance A. This distance A provides a space for entwining the lead wire of the end portion of the differential coil 2 with the pin 6. Moreover, a pin 6 is planted at the end of the foot portion 5.

The differential coil bobbin 1 having the above structure is fixed to the terminal board 10 by the following procedure. First, the pin 6 is inserted and fixed in the foot portion 5 of the frame portion 3 of the differential coil bobbin 1, and the differential coil 2 is wound around the cylindrical frame portion 3. The lead wire of the differential coil 2 is entwined with the pin 6 to form the entanglement portion 8. In this state, the pin 6 is inserted into the hole 10a provided at a predetermined position on the terminal board 10. At this time, the collar portion 4 is brought into contact with the surface of the terminal board 10. The pins 6 projecting from the back side of the terminal plate 10 are soldered from the back side of the terminal plate 10 to form the soldering portions 7. The terminal board 10 is made of a solderable material such as paper phenol or glass epoxy.

In the above embodiment, the four brim portions 4 and the one foot portion 5 are provided on one side of the frame portion 3, and the two brim portions 4 and the two foot portions 5 are provided on the opposite side. The size, quantity and layout of these can be selected appropriately.

Further, not only the tang portion 8 but also other components such as a resistor and a capacitor can be attached to the space between the foot portion 5 of the differential coil bobbin 1 and the terminal plate 10.

[0017]

[Effect of the device]

 As described above, according to the present invention, when the differential coil bobbin is fixed to the terminal plate, the pin inserted and fixed to the foot is soldered to the terminal plate in the final step of the work, so that the differential coil bobbin is connected to the terminal plate. Firmly fixed to. Since the foot is separated from the terminal board, the lead wire at the end of the differential coil can be entangled with the pin implanted at the lower end of the foot, enabling automatic winding of the differential coil. Become. According to the present invention, since the pull-out end of the differential coil is entangled with the pin and then the pin is inserted into the terminal board, after the pin is inserted into the terminal board as in the conventional case, the operation of tangling the lead wire There is no need to do it by hand, which reduces the work cost. Moreover, since it is not necessary to separately provide a twisting terminal as in the past, it is not necessary to widen the terminal board by that amount, and the cost is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a differential coil bobbin of a deflection yoke according to the present invention is attached to a terminal plate.

FIG. 2 is a front view showing a state in which the differential coil bobbin of the deflection yoke according to the present invention is attached to a terminal plate.

FIG. 3 is a front view showing a conventional differential coil bobbin for a deflection yoke fixed to a terminal plate.

[Explanation of symbols]

 1 differential coil bobbin 2 differential coil 3 frame part 4 collar part 5 foot part 6 pin 7 soldering part 10 terminal plate

Claims (2)

[Scope of utility model registration request] 1. A frame part around which a differential coil is wound, a plurality of flange parts which are integral with the frame part and whose ends abut against the terminal plate when attached to the terminal plate, and the frame part. A plurality of legs which are integrally formed with each other and have an end portion separated from the terminal plate when attached to the terminal plate and a pin penetrating the terminal plate being planted at the end portion and wound around the frame portion. And a structure of a differential coil bobbin in which an end lead wire of the differential coil is connected to the pin. 2. The structure of the differential coil bobbin according to claim 1, wherein the collar portion and the foot portion are arranged offset from each other in the axial direction of the frame portion.