JPS6223067Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flyback transformer that supplies high voltage to the cathode ray tube anode of a television receiver.

In recent years, flyback transformers used in television receivers are constructed by directly attaching and fixing the flyback transformer to a printed circuit board in the receiver (set) via pin-shaped terminals. For more secure fixation, the receiver is also fixed to the chassis in the receiver.

In the conventional flyback transformer, the first
As shown in the figure, a projecting plate 4 is attached to the upper end of the case 3 of the flyback transformer 2 fixed on the printed circuit board 1.
The other end (bent part) 7A of the mounting bracket 7 (or the other end (bent part) 7A of the mounting bracket 7, one end of which is fixed to the chassis 6 through the screw hole 5 formed in the thickness direction (horizontal direction) of the projecting plate 4 Instead, a bent end portion of an arm-shaped support piece (not shown) formed directly on the chassis 6)
It was configured by fixing it with screws 8 from the horizontal direction (lateral direction).

However, in such a configuration, the mounting bracket 7 (or arm-shaped support piece) is screwed and fixed to the projecting plate 4 from the horizontal direction (lateral direction), and there are many obstacles when screwing. In addition, in a flyback transformer configured to have a resistor back with a focus volume and a screen volume mounted integrally on the side of the case 3, the focus lead and screen lead are extremely poor. The screws are pulled out from the side of the case 3 toward the top, which has drawbacks such as difficulty in screwing in the horizontal direction.

The present invention relates to a flyback transformer intended to eliminate the above-mentioned drawbacks.

Hereinafter, one embodiment of the flyback transformer of the present invention will be described in detail with reference to the drawings. In FIGS. 2 and 3, 10 is a flyback transformer, which houses a core 11, low-voltage/high-voltage coils (not shown) wound around the core 11, and low-voltage/high-voltage coils inside. It is composed of a cylindrical case 12 and an insulating resin (not shown) injected into the case 12, and is connected to a printed circuit board P in a television receiver (set) via pin-shaped terminals 13, etc. It is placed and fixed in a predetermined position. Flyback transformer 1
A resistor pack 14 having a focus volume and a screen volume V is integrated with the case 12 and attached to the side surface of the case 12 of the resistor pack 14.
5. The screen lead 16 is guided upward. The upper end 17 of the case 12 has the resistor pack 14 attached to its side surface, that is, the upper end 17 is located close to the resistor pack 14 on the upper end surface when the flyback transformer 10 is fixed on the printed circuit board P. upright wall 18 in a direction perpendicular to
will be provided. A cylindrical fixing part 19 is provided on the surface of the upright wall 18 facing the resistor pack 14, and a screw hole 20 is formed in the fixing part 19 in the vertical direction. On the other surface of the upright wall 18 (the surface facing the surface on which the fixing part 19 is provided), a stepped recess 21 is formed at the center, and an engagement groove 22 is formed at the side. be done. Stepped recess 21 provided in upright wall 18
A bent portion 25 provided at the tip end portion 24A of an arm-shaped support piece 24 formed by bending a portion of the chassis 23 of the television receiver (set) in a right angle direction is fitted into the frame. A screw hole 2 provided in the fixing part 19 is located near the tip 24A of the arm-shaped support piece 24.
A thread groove 26 is formed corresponding to 0. In addition, a metal piece 2 for core grounding is provided in the engagement groove 22 of the upright wall 18.
7 is engaged and fixed. Core case metal piece 27
As shown in FIG. 4, the plate-shaped portion 27A engages with the engagement groove 22, the fixing portion 27B formed at one end of the plate-shaped portion 27A, and the upright wall extending downward from the plate-shaped portion 27A. It consists of an elastic tongue piece 27C that partially contacts the core 11 while being fixed to the fixing part 27B, and a screw groove 27D is formed in the fixing part 27B. Reference numeral 28 denotes a screw, which is connected to each screw groove 26, 27D of the arm-shaped support piece 24, the core grounding metal piece 27, and the fixing part 1.
The arm-shaped support piece 24 and core grounding metal piece 27 are attached to the fixing part 19 of the upright wall 18 through the screw holes 20 of 9.
It is for fixing to.

In a flyback transformer with such a configuration,
The flyback transformer 10 is attached to a predetermined position on the printed circuit board P with terminals 13 and fixing metal fittings (not shown).
Place and fix it via etc. After that, Shashi 23
The bent portion 25 of the arm-shaped support piece 24 extending from the case 12 is fitted into the stepped recess 21 of the upright wall 18 provided on the case 12, and the core earthing metal piece 27 is inserted into the tongue piece 27C.
The plate-shaped portion 27A is engaged with the engagement groove 22 of the upright wall 18 while the is in contact with the core 11. The flyback transformer 10 is fixed to the chassis 23 via the arm-shaped support piece 24 by passing it through the screw hole 20 of the fixing part 19 from the same vertical direction.

In one embodiment of the flyback transformer of the present invention, an arm-shaped supporting piece from the chassis is fixed to the upright wall provided at the upper end of the case, and a metal piece for core grounding is also fixed at the same time. Of course, the grounding may be done by other means. Furthermore, in one embodiment of the present invention, an arm-shaped support piece is formed directly from the chassis, but as shown in FIG. 5, a mounting bracket 29 having a substantially U-shaped cross section may also be used. In this case, one end 29A is fixed to the chassis,
The other end 29B is fitted into a stepped recess provided in an upright wall. Furthermore, in one embodiment of the present invention, a flyback transformer is described in which a resistor pack is integrally attached to the side of the case, but the present invention may also be applied to a normal flyback transformer that does not include a resistor pack. It is something.

As described above, according to the flyback transformer of the present invention, an upright wall is provided in the upper end of the case in the vertical direction, and a fixing part having a screw hole in the vertical direction is formed on one surface of the upright wall. A part of the chassis of the TV set is fixed through a screw hole, and a part of the chassis (arm-shaped support piece, mounting bracket, etc.) is fixed with screws from a direction perpendicular to the fixed part of the upright wall. It is fixed with screws, so there are no obstacles when screwing, which improves work efficiency. Even when applied to a flyback transformer equipped with a resistor pack, it can be used as a focus lead,
It has the effect of being able to be screwed together without being affected by the direction in which the screen lead is pulled out, and it also has the effect of being applicable to fixing metal fittings for core cases, etc., making it practical. It is extremely effective.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional flyback transformer fixed to a chassis, and FIG. 2 is a front view of a flyback transformer according to an embodiment of the present invention.
FIG. 3 is a perspective view of the flyback transformer fixed to the chassis, FIG. 4 is an exploded perspective view of the main parts, and FIG. 5 is a perspective view of a mounting bracket in another embodiment of the present invention. 10... flyback transformer, 12... case, 17... upper end of case, 18... upright wall, 1
9... Fixed part, 20... Screw hole, 23... Chassis.

Claims (1)

[Scope of utility model registration request] An upright wall is provided in the vertical direction at the upper end of the case in which the coil is housed and filled with insulating resin, a fixing part having a screw hole in the vertical direction is formed on one surface of the upright wall, and a TV is attached to the fixing part. A flyback transformer characterized in that a part of the chassis of the set is fixed through the screw hole.