JPH0577920U - Coil bobbin - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a vertical coil coil bobbin for use in a coil that generates a high voltage in a step-up transformer or the like that is easy to assemble and has high reliability. [Structure] An upper collar 6 and a lower collar 16 made of an insulating material, each of which is provided with a through hole at a central portion thereof, and a winding made of a cylindrical insulating material on one outer surface of which a first coil is wound. A cylindrical insulating frame 15 is integrally formed on the frame 7 and its outer position,
The lower brim 16 is provided with a through hole having the same size as the through hole of the upper brim in the central portion, and the winding frame 14 of the upper brim and the insulating frame 1 are provided.
In the corresponding position of 5, the insulating frame 13 and the bobbin 7 are formed in the same manner as the upper collar.
A coil bobbin having a structure in which the upper collar 6 and the lower collar 16 are combined, and the tips of the respective winding frames and insulating frames are fixed to the inside of the other upper and lower collars facing each other by adhesion or welding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a vertical coil bobbin used for a step-up transformer of electronic equipment.

[0002]

[Prior Art]

 In the conventional bobbin 2 of the step-up transformer, as shown in FIG. 3, the coils on the primary side and the secondary side are arranged side by side in a direction parallel to the axis of the coil so that a high voltage is obtained on the secondary side. The high voltage was obtained by dividing the high voltage by dividing it with a plurality of partition plates 5 within a range in which the coating of the winding can withstand the high voltage. Recently, however, there has been a strong demand for a thin type, and especially for a cathode ray tube, the cathode tube has become thinner, so that the transformer itself is required to be short. Therefore, in the above-mentioned structure, there is a limit in making the height short due to the thickness of the core and the thickness of the bobbin, and there is a problem that the requirements cannot be met. Therefore, the coils on the primary side and the secondary side are arranged vertically in a direction perpendicular to the axial direction of the coil, and a bobbin with one frame is used. In this case, in order to obtain a large number of turns, it is necessary to make the winding frame thin, but if it is made thin, the mechanical strength is low, workability is reduced, and the first coil (secondary coil) and the second coil (primary coil) Insulation between the side coils) is provided by insulating tape, etc., but there was a problem of insufficient reliability due to insufficient insulation.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to solve the above problems and provide a coil bobbin that is thin, easy to assemble, and highly reliable for high voltage, and is used for high voltage generating components such as step-up transformers.

[0004]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a winding portion of a first coil (generally a secondary side coil) and a second coil (generally a primary side coil) in a direction perpendicular to the axial direction of the coil. A coil bobbin made of an insulating material, which is composed of two flanges, a through hole is provided in the center of one of the flanges, and a winding frame for winding the first coil on one outer side of the through hole. An insulating frame having the same width is integrally formed on the outer side of the flange, a lead-out hole for leading out a coil end is formed near the outermost peripheral portion of the first coil of the flange portion, and a terminal is provided on the outer peripheral portion of the flange. Similarly, another through hole is provided in the center of the other second flange portion, and the same circumference as that of the through hole is provided around the through hole, and the reel of the first flange has the same width as that of the center reel of the first flange portion. An insulating frame of a size that fits inside is integrally molded at a corresponding position, and the outside of the insulating frame is fitted on the outside of the insulating frame of the first collar portion and has a second coil of the same width. A winding bobbin is integrally provided, and a coil bobbin having a structure in which the winding bobbin of the two flanges and the tip of the insulating frame are pressed or pressed against other flanges to be bonded or welded is provided.

That is, the present invention relates to a coil bobbin used for a vertical coil in which a plurality of coils are arranged in a direction perpendicular to the axis of the coil, the coil bobbin including an upper collar and a lower collar made of an insulating material. , A through hole is provided in the central part, and a winding frame made of a tubular insulator for winding the first coil is integrally formed on one surface on the outer side of the through hole. A cylindrical insulating frame made of an insulating material having the same width as the winding frame is formed on the outer side of the coil portion of No. 1, and the lower flange has the same size as the through hole of the upper flange at the center. A through-hole is provided and is made of an insulating material having a size that fits inside the bobbin of the upper collar at a corresponding position of the bobbin of the upper collar and has the same width as that of the bobbin of the upper collar. An insulating frame is provided, and at a position where the insulating frame of the upper collar corresponds, a size that fits inside the insulating frame. A winding frame for the second coil having the same width as that of the insulating frame is provided, and the end of the first coil and the second coil are provided at opposite positions on the outer circumference of the upper and / or lower flanges. It has a terminal for each end and has a structure in which a lead hole for leading out the end of the first coil is formed inside the bobbin for the second coil. After combining the upper and lower flanges, each bobbin The coil bobbin has a structure in which the tip of the insulating frame is fixed to the inside of the upper and lower flanges facing each other by adhesion or welding.

[0006]

[Action]

 It is disassembled into two collars, and a winding frame for winding the primary side coil or the secondary side coil is concentrically provided on each of them, and an insulating frame having the same width is provided at the corresponding position inside each winding frame. It is sized to fit in. For this reason, a sufficient edge surface distance can be secured by assembling them face-to-face by winding up or winding up only the first coil, and if necessary, bonding or welding may be performed within a range in which mechanical strength can be maintained. In addition, a terminal provided at the end of the flange and a terminal provided at a position opposite to the terminal provide a sufficient distance between the high-voltage part and other parts, and a reliable air-core coil can be obtained. It

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a view showing the structure of a coil bobbin for a step-up transformer according to the present invention. FIG. 1A is a perspective view showing an exploded appearance, and FIG. 1B is a perspective view showing a state of being integrally assembled. 2A and 2B are cross-sectional views showing a cross section taken along the line AA of the coil bobbin shown in FIG. 1, illustrating steps for assembling the step-up transformer coil. FIG. 2A shows the state before the assembly, and FIG. Indicates assembly.

As shown in FIG. 1A, the coil bobbin of the embodiment of the present invention shown in FIG. 1 is composed of two parts, an upper collar 6 and a lower collar 16, and the upper collar 6 has a magnetic core in the center. Is provided with a through-hole into which a first coil (secondary coil) is wound, and a winding frame 14 around which a first coil (secondary coil) having substantially the same size is wound is provided, and a first coil and a second coil (1 An insulating frame 15 that insulates the secondary coil is integrally formed of an insulating material of the same material as the upper collar 6. A through hole is provided in the center of the lower flange 16, and further, the insulating frame 13 and the winding frame 7 around which the second coil is wound are provided on one surface of the upper flange 6 at the corresponding positions of the winding frame 14 and the insulating frame 15. It is integrally molded with the collar 16 and the same insulating material. A drawing hole 8 for drawing out the end of the first coil is formed in an inner position of the winding frame 7 of the lower collar 16. Further, the terminals 1 are separately arranged for each coil at opposite ends of the outer circumference of the lower collar 16.

Next, an example of assembling an air-core coil for a step-up transformer will be described with reference to FIG. As shown in FIG. 2A, the first coil 10 (here, the secondary coil in this case) is mounted on the winding frame 14 inside the upper collar 6 in the same width as the winding frame 14 via an insulating tape or the like. It is wound in several layers. On the other hand, the second coil 11 (the coil on the primary side in this case) is wound around the winding frame 7 outside the lower collar 16 to have a width substantially the same as the width of the winding frame 7. Next, as shown in FIG. 2 (b), the lead wire 9 of the first coil 10 processed into the upper collar 6 is pulled out from the lead hole 8 provided in the lower collar, and the winding frames 14 and 7 of each collar and the insulating frame are drawn. 15 and 13 are fitted face-to-face with each other, and are pushed in until the welded portion 12 at each tip comes into contact with the inner wall of the other flange, and welded or adhered to fix. After that, the terminal of each coil is terminated to the terminal 1 to complete the air core coil for the step-up transformer. The step-up transformer is completed by attaching the magnetic core to the through hole at the center of this air-core coil. As described above, the assembly can be easily performed, and the insulation between the magnetic core and the first coil and between the first coil and the second coil is such that the tip of the winding frame or the insulating frame is partially covered by another brim. It was welded and fixed to the inner wall of the, and sufficient pressure resistance could be secured even if some voids were generated. In addition, the entire product could be made extremely thin.

[0010]

[Effect of the device]

 As described above, according to the present invention, it is possible to obtain an economical and highly reliable coil bobbin in which the step-up transformer and the like can be made thin, the assembling is easy, and the insulation between the high-voltage part and other parts can be surely maintained.

[Brief description of drawings]

1 is a view showing the structure of a coil bobbin for a boosting transformer according to the present invention, FIG. 1 (a) is an exploded perspective view of the appearance, FIG.
FIG. 3B is a perspective view showing a state of being integrally assembled.

2 shows a cross section taken along the line AA of the coil bobbin shown in FIG.
FIG. 2A is a cross-sectional view illustrating a step of assembling the step-up transformer coil, FIG. 2A shows the state before the assembly, and FIG. 2B shows the assembled state.

FIG. 3 is an external perspective view showing an example of a coil bobbin used in a conventional step-up transformer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 terminal 2 bobbin 3 secondary side reel 4 primary side reel 5 partition plate 6 upper collar 7 reel 8 reel hole 9 lead wire 10 coil 11 coil 12 welded portion 13 insulating frame 14 reel 15 insulating frame 16 lower collar

Claims (1)

[Scope of utility model registration request] 1. A coil bobbin used for a vertical coil in which a plurality of coils are arranged in a direction perpendicular to an axis of the coil, the coil bobbin including an upper collar and a lower collar made of an insulating material, and the upper collar having a central portion. A through-hole is provided in the outer surface of the first coil, and a winding frame made of a tubular insulator that winds the first coil is integrally molded on one outer surface of the through-hole. At the outer position, a cylindrical insulating frame made of an insulating material having the same width as that of the winding frame is formed, and the lower flange is provided with a through hole having the same size as the through hole of the upper flange at the center. And an insulating frame made of an insulating material having a width that is the same as that of the bobbin of the upper collar and is fitted to the inside of the bobbin of the upper collar at a corresponding position of the bobbin of the upper collar. In addition, at the position where the insulating frame of the upper collar corresponds, the size that fits inside the insulating frame, and the width of this insulating frame A winding frame for the second coil is provided, and terminals for terminating the first coil and the second coil are provided at opposing positions on the outer circumference of both or one of the upper and lower flanges, respectively. The second coil has a structure in which a lead hole for leading out the end of the first coil is formed inside the winding frame, and after combining the upper and lower flanges, the ends of each winding frame and the insulating frame are opposed to each other. A coil bobbin characterized by a structure in which it is fixed to the inside of the tsuba and the lower tsuba by adhesion or welding.