JPH09320871A - Fly-back transformer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable wiring work to be carried out simultaneously with other assembly works at the time of assembling a image-display equipment, by directly connecting an anode cap to a fly-back transformer body, so as to unify them. SOLUTION: An anode cap 5 is provided which is formed in a cap shape using an insulator, such as, rubber, and has a contact piece 6 at the axial, center position thereof. A socket portion 5a is formed on a bottom portion of the anode cap 5 and is loosely fitted to be rotatable in a direction of arrow R with respect to the fly-back transformer body 2. In addition, a pin portion 6a at the proximal end of the contact piece 6 is fitted and fixed in a cylindrical high-voltage terminal 2a provided in the fly-back transformer body 2. The contact piece 6 is then fitted with an anode button provided in a funnel portion of a cathode-ray tube, and the contact piece and the anode button are electrically connected with each other. Thus, assembly work of a image-display equipment and wiring work between the fly-back transformer body directly connected with the anode cap and the anode button of the cathode-ray tube may be carried out simultaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flyback transformer used for video equipment such as a television receiver.

[0002]

2. Description of the Related Art A conventional flyback transformer will be described below with reference to the drawings. FIG. 4 is an external perspective view showing an example of a conventional flyback transformer and its use state. In the figure, 1 is a printed circuit board, 2 is a flyback transformer main body mounted on the printed circuit board 1, 3 is a cathode ray tube, Reference numeral 4 is an anode lead wire, and 5 is an anode cap, which is connected to an anode button provided on the funnel surface of the cathode ray tube 3. Thus, the electrical connection between the flyback transformer body 2 and the anode button of the cathode ray tube 3 is usually made through the flexible anode lead wire 4, and is disclosed in Japanese Patent Laid-Open No. 63-188817 or in actual practice. The one proposed in Japanese Patent Laid-Open No. 63-158056 is also based on the connection via the anode lead wire.

[0003]

However, when this conventional flyback transformer is used, the anode lead wire whose position is difficult to fix is interposed between the anode button of the cathode ray tube connecting this flyback transformer and the wiring work thereof. Was forced to work manually, which was one of the obstacles to rationalization of assembly work.

The present invention solves this problem, and eliminates the above-mentioned manual connection work, and carries out this wiring work simultaneously with other assembly work when assembling the video equipment. Intended to provide a transformer.

[0005]

In the flyback transformer of the present invention, an anode cap is directly connected to the flyback transformer body, and both are integrated.

According to the present invention, the above-mentioned wiring work is performed in conjunction with other assembling work at the time of assembling the video equipment, for example, the work of mounting the printed circuit board having the flyback transformer and other circuit parts mounted on the video equipment. A flyback transformer is obtained that contributes to the rationalization of assembly work.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Note that the same reference numerals are used for the same parts as those of the conventional one. 1 is a partial cross-sectional side view showing the configuration of an embodiment of the flyback transformer of the present invention, FIG. 2 is a partial cross-sectional side view showing the connection state of the flyback transformer and the anode button of a cathode ray tube, FIG. FIG. 6 is a perspective view for explaining a wiring work between the flyback transformer and an anode button of a cathode ray tube. In each figure, 1 is a printed circuit board, 2
Is a flyback transformer body mounted on the printed circuit board 1, 3 is a cathode ray tube, 5 is a cap made of an insulating material such as rubber, and an anode cap provided with a contact piece 6 at its axial center position. A socket 5a is formed at the base of the flyback transformer main body 2 and is loosely fitted in the flyback transformer body 2 in the direction of arrow R shown in FIG.
Further, the pin portion 6a at the base end of the contact piece 6 is fitted and fixed to a cylindrical high voltage terminal 2a provided in the flyback transformer body 2, and a spring portion 6c is formed in the middle portion thereof. At the same time, the tip portion 6b has a taper portion 6d and a space portion 6e.
Is provided. As shown in FIG. 2, the contact piece 6 is fitted to the anode button 3b provided on the funnel portion 3a of the cathode-ray tube 3 to electrically connect the two, but at this time, the contact of the tip portion 6b ensures a stable contact. The state is obtained. Reference numeral 7 denotes a cabinet of the video equipment, and a guide groove 7a for slidingly inserting the printed circuit board 1 into the cabinet 7 is provided on the bottom surface thereof.

As shown in FIG. 3, the flyback transformer body 2 in which the anode cap 5 is directly connected is mounted on the printed circuit board 1 together with other components (not shown), and is mounted along the guide groove 7a. When the cathode ray tube 3 is arranged as shown in the figure when it is pushed into the inside of the cathode ray tube for assembly, the contact piece 6 in the anode cap 5 is fitted to the anode button 3b of the cathode ray tube 3 in conjunction with this assembling work. Will be electrically connected, and assembly work and wiring work can be performed at the same time. In this case, the socket portion 5a of the anode cap 5 is rotatably loosely fitted to the flyback transformer body 2, and the contact piece 6
Since there is a spring action of the spring portion 6c provided in the intermediate portion of the anode cap 5, the anode cap 5 is held with respect to the flyback transformer main body 2 in the directions R and Z shown in FIG. Since the taper portion 6d of the tip end portion 6b of 6 and the space portion 6e have good attachability and detachability, the assembling work can proceed smoothly. The pin portion 6a at the base end of the contact piece 6 is adapted to be fitted and fixed in the cylindrical high-voltage terminal 2a provided in the flyback transformer main body 2. The 6a side may be cylindrical and the high voltage terminal 2a side may be pin-shaped.

[0009]

As described above, according to the present invention, the assembling work of the video equipment and the wiring work of the flyback transformer main body directly connected to the anode cap and the anode button of the cathode ray tube can be performed at the same time. The advantageous effect that it can contribute to the rationalization, such as automation, is obtained.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing the configuration of an embodiment of a flyback transformer of the present invention.

FIG. 2 is a partial cross-sectional side view showing a connection state between a flyback transformer and an anode button of a cathode ray tube in one embodiment of the flyback transformer of the present invention.

FIG. 3 is a perspective view of a main part for explaining a wiring work between a flyback transformer and an anode button of a cathode ray tube in one embodiment of the flyback transformer of the present invention.

FIG. 4 is a perspective view of an essential part showing an example of a connection state between a conventional flyback transformer and an anode button of a cathode ray tube.

[Explanation of symbols]

1 ... Printed circuit board, 2 ... Flyback transformer body,
3 ... CRT, 4 ... Anode lead wire, 5 ... Anode cap, 6 ... Contact piece, 7 ... Cabinet.

Claims (4)

[Claims] 1. A flyback transformer in which an anode cap is directly connected to a flyback transformer body to integrate them. 2. The flyback transformer according to claim 1, wherein the anode cap is directly connected so as to be free to move. 3. The flyback transformer according to claim 1, wherein the anode cap is rotatably connected directly. 4. The flyback transformer according to claim 1, wherein the anode cap is slidably directly connected.