JPH0351932Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a transformer, and more specifically, relates to an improvement of a transformer for correcting pincushion distortion, for example.

[Conventional technology]

It is well known that pincushion distortion occurs in television receivers as the deflection angle increases.

[The problem that the invention attempts to solve]

This pincushion distortion includes left-right pincushion distortion and vertical pincushion distortion. For example, in left-right pincushion distortion, the horizontal amplitude is insufficient in the center, so it is known that it is corrected by superimposing a correction current for the insufficient amplitude on the horizontal deflection coil. Therefore, a distortion correction transformer is used. This distortion correction transformer has a base plate on which terminals are molded, and a vertical coil bobbin and a horizontal coil bobbin are integrally formed, and a vertical coil with a large number of turns using a fine wire and a horizontal coil with a small number of turns using a thick wire are respectively wound on these. Because it is integrated with the board, it is troublesome to set it on the winding machine, and the terminals that protrude from the bobbin are a nuisance and must be visually monitored.In addition, due to the structure, it is troublesome to insert the E and I type cores. It has certain drawbacks.

[Purpose of invention]

This invention aims to eliminate the above-mentioned drawbacks of the prior art.

[Summary of the idea]

In order to achieve the above-mentioned purpose, this invention includes a base plate and a first tube protruding from the center of the base plate.
a coil bobbin, a through hole for passing through the core provided in the base plate at the lower part of the first coil bobbin, and a through hole for passing through the core provided on the left and right sides of the base plate sandwiching the first coil bobbin. , a second coil bobbin disposed corresponding to each of the through holes, and a first coil bobbin wound around each of the first coil bobbin and the second coil bobbin, respectively.
a coil and a second coil, a closed magnetic circuit forming core disposed to penetrate through each of the first and second coil bobbins and each through hole of the base plate, and a core that covers the outer surface of the first coil. and an insulator having a substantially U-shaped cross section having a pair of lead wire clamp protrusions, and the lead wires of each of the second coils are clamped by the clamp protrusions and protruded from the base plate. The present invention provides a transformer characterized in that it is electrically connected and fixed to a terminal pin.

[Structure of the embodiment of the invention]

As shown in FIGS. 1 to 6, the transformer of this invention has a substantially rectangular first coil bobbin 2 projecting from the upper center of a rectangular base plate 1, and a core penetrating through the center of the first coil bobbin 2. A through hole 3 for the coil bobbin 2 and a through hole 4 for core penetration on the left and right sides sandwiching the first coil bobbin 2 are respectively provided, and second coil bobbins 5, 5 are provided corresponding to each of the through holes 4, respectively. The coil bobbin 2 and the second coil bobbins 5, 5 each have a first coil _l1 and a second coil l1, respectively.
coils l ₂ and l ₂ are wound, and the core 7 for forming a closed magnetic circuit is passed through each of the first and second coil bobbins 2, 5 and each of the through holes 3, 4 of the base plate 1, and is disposed therein. and an insulator 9 having a substantially U-shaped cross section and covering the outer surface of the first coil l ₁ and having a pair of lead wire clamp protrusions 8, and a lead wire 10 of each of the second coils l ₂ and l _2. are clamped by the clamp protrusion 8 and electrically connected and fixed to terminal pins 11 and 14 protruding from the base plate 1, respectively.

The first coil bobbin 2 has a rectangular cylindrical winding core 31.
A collar 32 is formed at the upper end thereof at a constant interval, and two protrusions 36 are formed on the collar 32 for positioning an I-shaped core, which will be described later.

FIG. 2 shows an insulator 9 with a substantially U-shaped cross section that covers the outer periphery of the first coil _l1 , and one side has a pair of clamp protrusions 8, 8 for locking the coil lead wire.
is provided.

These base plate 1 and second coil bobbin 5 are assembled as shown in FIG. When assembling, attach the first coil l 1 to the first coil bobbin 2 shown in FIG. 1 as shown in FIGS. 3 and 5 _.
After winding the second coil l2 around two separately prepared second coil bobbins ₅ with flanges at both ends, the magnetic legs 81 of the closed magnetic circuit forming core 7,
The magnetic legs 83 are inserted into the second coil bobbin 5 and the magnetic legs 82 are inserted into the first coil bobbin 2, so that they are formed integrally with the coil bobbin 2, respectively. At this time, the first coil
Install the insulator ₉ so that the claw 42 forming side faces the base plate side so as to cover the insulator 9, and pass the winding start ends of the two second coils _l1 and _l2 through the coil extraction grooves 15 on both sides. To the terminal pins 11 on both ends,
The winding end ends are engaged with the clamp protrusions 8, 8, and then vertically pulled down, passed through the central coil pull-out groove 16, and connected to the central terminals 14 by soldering. The beginning and the end of the winding of the first coil _l1 are passed through the coil extraction groove 23 and tied to the terminals, and then connected by soldering, and then the I core 17 is arranged between the protrusions 36 and the ends of the magnetic legs 81 to 83 are connected. and one surface of the core, and then adjust the core gap to
By fixing the core 17 with adhesive, the transformer A for pincushion distortion correction is completed.

[Effect of invention]

This invention can eliminate left and right pincushion distortion and top and bottom pincushion distortion, and this distortion correction transformer is integrated with a base plate with molded terminals to form a vertical coil bobbin and a horizontal coil bobbin. A horizontal coil with a small number of turns is wound with the coil and thick wire, and as mentioned above, it is integrated with the base plate, making it easy to set it on the winding machine.

[Effect of idea]

As described above, this invention consists of a base plate, a first coil bobbin protruding from the center of the base plate, and a through-hole for the core to pass through the base plate at the bottom of the first coil bobbin. and a core penetrating hole provided on the left and right sides of the base plate sandwiching the first coil bobbin, and a second coil bobbin provided corresponding to each of the through holes, respectively;
A first coil l 1 and second coils l ₂ and l ₂ wound around the first coil bobbin and the _second coil bobbin, respectively, and each of the first and second coil bobbins and the base plate. Each of the coils includes a core for forming a closed magnetic circuit disposed through the through hole, and an insulator having a substantially U-shaped cross section and covering the outer surface of the first coil _l1 and having a pair of lead wire clamp protrusions. and each of the second coils
Since the lead wires of l ₂ and l ₂ are clamped by the clamp protrusion and electrically connected and fixed to the terminal pins protruding from the base plate, the coils can be wound around the first coil bobbin using a winding machine. The manufacturing cost is low because the horizontal coil can be wound easily and efficiently, and the first coil
l 2nd coil for insulator 9 placed over ₁
l ₂ is maintained well, the end of the coil lead can be processed reliably and easily, the insulator 9 can be prevented from being pulled out by the coil lead wire, and the insulator can be installed easily and reliably. have

[Brief explanation of drawings]

The figures show one embodiment of this invention; Fig. 1 is a perspective view of the base plate integrated with the coil bobbin, Fig. 2 is a perspective view of the insulator, and Fig. 3 is a perspective view of the transformer for correcting pincushion distortion. 4 is a longitudinal sectional view of the transformer, FIG. 5 is a sectional view taken along the line AA shown in FIG. 4, and FIG. 6 is a sectional view taken along the line BB. 1... Base plate, 2... First coil bobbin,
3, 4...Through hole, 5...Second coil bobbin, 7
... Core for forming a closed magnetic path, 8 ... Clamp protrusion, 9
...Insulator, 10...Lead wire, 11...
...terminal pin, l ₁ ... first coil, l ₂ ... second coil.

Claims (1)

[Scope of utility model registration request] a base plate, a first coil bobbin protruding from the center of the base plate, a core penetration hole formed in the base plate at a lower part of the first coil bobbin, and a first coil bobbin in the base plate; Through-holes for core penetration provided on the left and right sides sandwiching the coil bobbin, second coil bobbins arranged corresponding to each of these through-holes, and winding on each of the first coil bobbin and the second coil bobbin, respectively. The first
a coil and a second coil, a closed magnetic circuit forming core disposed to penetrate through each of the first and second coil bobbins and each through hole of the base plate, and a core that covers the outer surface of the first coil. and an insulator having a substantially U-shaped cross section having a pair of lead wire clamp protrusions, the lead wires of each of the second coils being clamped by the clamp protrusions and protruding from the base plate. A transformer characterized by being electrically connected and fixed to terminal pins.