JPH07220964A - High-voltage transformer - Google Patents

Abstract

PURPOSE:To provide a high-voltage transformer having a structure that prevents a low-voltage coil part from getting caught on a high-voltage coil part during assembly. CONSTITUTION:A high voltage transformer is provided with a low-voltage coil part 2 and a high-voltage coil part 3 wherein the low-voltage coil part 2 is inserted. A plurality of lines of section brims 7 are formed parallel along a shaft center direction on an outer surface of a tubular bobbin 6 of the low- voltage coil part 2 whereon a lead wire 5 is wound by section winding. The section brim 7 formed on the tubular bobbin 6 of the low-voltage coil part 2 is tapered to narrow as it comes up to a tip side toward the high-voltage coil part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high voltage transformer having a structure in which a low voltage coil portion is inserted into a high voltage coil portion, and more specifically, a section formed on the outer surface of a cylindrical bobbin constituting the low voltage coil portion. Regarding the structure of the tsuba.

[0002]

2. Description of the Related Art As a high voltage transformer of this type, a flyback transformer (hereinafter referred to as an FBT) for supplying a DC high voltage to an anode of a cathode ray tube such as a television is known, and this FBT is shown in FIG. The overall structure is shown in simplified form. That is, this FBT
Is a pair of upper and lower cores 1 which are U-shaped in a side view and arranged to face each other, a primary low-voltage coil portion 2 into which one side leg portion of these cores 1 is inserted, and the low-voltage coil portion 2 Externally fitted high-voltage coil section 3 and this high-voltage coil section 3
And a case 4 which is filled with an insulating resin (not shown), and the legs of both cores 1 are bonded together by using an adhesive (not shown). It is joined together.

The low-voltage coil portion 2 of the FBT is constructed by winding a conductor wire 5 such as an enamel copper wire around a cylindrical bobbin (hereinafter referred to as a low-pressure bobbin) 6 in sections (divided). A plurality of rows of section flanges 7 that insulate the conductors 5 from each other are formed in parallel on the outer surface of the conductors 6 along the axial direction. Each of the section collars 7 here is divided along the circumferential direction of the low pressure bobbin 6, and each end of the conductor wire 5 wound between the section collars 7 is pulled out to the lower side of the low pressure bobbin 6. Then, the low pressure bobbin 6 is connected to each of the terminal pins 8 projecting from the flange portion 6a. Further, the high-voltage coil unit 3 constituting this FBT is equipped with a cylindrical bobbin (hereinafter referred to as a high-voltage bobbin) 9 into which the low-voltage coil unit 2 is inserted. The conducting wire 10 is wound around.

[0004]

By the way, this FBT
At the time of assembling, the low-voltage coil portion 2 is inserted into the high-voltage coil portion 3 as shown in the explanatory view showing the insertion procedure of FIG. 6, but the high-voltage coil of the section collar 7 formed on the low-pressure bobbin 6 is Since the tip end facing the portion 3 is flat, these section flanges 7 may be caught on the high pressure bobbin 9 of the high voltage coil portion 3, and the low pressure bobbin 6 and the high pressure bobbin 9 are likely to be damaged. It was Moreover, the time required for inserting the low-pressure bobbin 6 into the high-pressure bobbin 9 becomes long, and it is difficult to improve productivity.

In order to avoid such an inconvenience, it is necessary to accurately position the low voltage coil section 2 and the high voltage coil section 3 during assembly, and the high voltage coil section 3 is provided with the low voltage coil section 2. It is necessary to improve the accuracy of the robot and sequencer block used when inserting, but in this case, the cost related to these facilities will increase significantly. .

The present invention was devised in view of these disadvantages, and an object of the present invention is to provide a high-voltage transformer configured so that the low-voltage coil portion will not be caught by the high-voltage coil portion during assembly.

[0007]

A high-voltage transformer according to the present invention includes a low-voltage coil section and a high-voltage coil section into which the low-voltage coil section is inserted, and a low-voltage coil section around which a conductor wire is wound. A tubular bobbin, that is, a plurality of rows of section flanges formed in parallel on the outer surface of the low-pressure bobbin along the axial direction, and the section flange formed on the low-pressure bobbin has a tip side toward the high-voltage coil section. The feature is that the taper shape is narrowed.

[0008]

According to the above construction, since the section flange formed on the low pressure bobbin is tapered so as to become narrower toward the tip side toward the high voltage coil section, when the low voltage coil section is inserted into the high voltage coil section. Also in the above, the low pressure bobbin does not get caught on the high pressure bobbin.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an FBT which is an example of a high voltage transformer will be described below with reference to the drawings.

Each of FIGS. 1 to 4 is an explanatory view showing an external structure of a cylindrical bobbin constituting the low voltage coil portion of the FBT, that is, a low voltage bobbin. Since the entire structure and components of the FBT according to the present embodiment are basically the same as those of the conventional example, the same or corresponding parts and portions as those in FIGS. 5 and 6 are denoted by the same reference numerals in FIGS. 1 to 4. The entire structure of the FBT will be described based on FIG.

The FBT according to this embodiment is similar to the conventional example.
A pair of upper and lower cores 1 which are arranged facing each other and are joined,
Low-voltage coil part 2 in which one side leg part of these cores 1 is inserted
And the high-voltage coil portion 3 fitted onto the low-voltage coil portion 2
And a case 4 surrounding the high-voltage coil unit 3, and the low-voltage coil unit 2 assembled after being inserted into the high-voltage bobbin 9 forming the high-voltage coil unit 3 uses an insulating resin or the like. In addition, a conductor wire 5 such as an enamel copper wire is section-wound on a low pressure bobbin 6 which is manufactured as a cylindrical shape.

As shown in FIG. 1, a plurality of rows of section flanges 7 are formed in parallel on the outer surface of the low pressure bobbin 6 so as to extend in the axial direction. The section collar 7 arranged at the most distal position toward the portion 3 is divided along the circumferential direction of the low pressure bobbin 6, and the cross-sectional shape of itself is high voltage coil portion 3
It is formed in a taper shape that becomes narrower toward the tip side toward. That is, the section flange 7 here has a taper shape that becomes narrower toward the tip side toward the high-voltage coil section 3. The ends of the conductor wires 5 wound between the section flanges 7 on the low-pressure bobbin 6 are pulled out to the lower side of the low-pressure bobbin 6 and are also attached to the terminal pins 8 projecting on the flange 6a. It is connected.

Therefore, even when the FBT is assembled by inserting the low voltage coil portion 2 into the high voltage coil portion 3 in the same manner as the conventional example shown in FIG. Low pressure bobbin 6 as taper
The section collar 7 formed above does not get caught on the high voltage bobbin 9 of the high voltage coil section 3, and the low voltage coil section 2 is inserted into the high voltage coil section 3 in an extremely smooth state. That is, this low pressure bobbin 6
Even when the section flange 7 arranged at the most distal position toward the high-voltage coil portion 3 comes into contact with the high-pressure bobbin 9 during insertion of the, the section flange 7 itself has a tapered cross section. Since it has a shape, the low-pressure bobbin 6 is displaced so that the axis of the low-pressure bobbin 6 coincides with the axis of the high-pressure bobbin 9, and as a result, the displaced low-voltage coil portion 2 has a high voltage. Coil part 3
It is inserted without being caught.

By the way, in this embodiment, the section flange 7 arranged at the most distal position toward the high voltage coil portion 3 is divided along the circumferential direction of the low pressure bobbin 6, but this Since the conducting wire 5 is not pulled out so as to cross the section flange 7, the section flange 7 arranged at the most distal position toward the high voltage coil portion 3 as shown in the first modification of FIG. May be continuous along the circumferential direction of the low-pressure bobbin 6, and may have a tapered cross-sectional shape that narrows toward the tip side toward the high-voltage coil section 3. Further, the section brim 7 itself does not necessarily have a tapered cross-sectional shape, and for example, as shown in the second modification of FIG. 3, the section brim 7 is arranged at the most distal position toward the high-voltage coil section 3. A plate-shaped auxiliary member 11 may be attached to the side of the high-pressure coil portion 3 of the section flange 7, and the side-view shape of the auxiliary member 11 may be tapered so as to become narrower toward the tip side toward the high-voltage coil portion 3.

Furthermore, in the present embodiment, only the section flange 7 arranged at the most distal end position is tapered, but as shown in the third modification of FIG. 4, the high voltage coil portion is formed. 3, the section flanges 7 from the tip end position toward the third row to the third row are formed such that the diameter becomes smaller toward the high voltage coil section 3, and each section flange 7 itself. The cross-sectional shape may be tapered so as to become narrower toward the tip side toward the high-voltage coil section 3. In the above explanation, the high voltage transformer is the FBT.
However, it is not limited to FBT,
The low voltage coil section 2 and the high voltage coil section 3 into which the low voltage coil section 2 is inserted are provided, and a plurality of rows of sections are formed on the outer surface of the tubular bobbin 6 of the low voltage coil section 3 around which the conductor 5 is wound. It goes without saying that the present invention can be applied to other than the FBT as long as the high voltage transformer has a structure in which the collar 7 is formed in parallel along the axial direction.

[0016]

As described above, according to the high voltage transformer of the present invention, the section flange formed on the outer surface of the cylindrical bobbin forming the low voltage coil portion becomes narrower toward the high voltage coil portion. Since it is tapered, the low pressure bobbin does not get caught on the high pressure bobbin even when the low voltage coil is inserted into the high voltage coil. Therefore, the low-pressure bobbin and the high-voltage bobbin are less likely to be damaged when the high-voltage transformer is assembled, and at the same time, it is not necessary to accurately position the low-voltage coil and the high-voltage coil.

As a result, it is not necessary to raise the accuracy of the robot, sequencer block, etc. used during assembly of them, and it is possible to reduce the cost related to these facilities. In addition, the time required for inserting the low-pressure bobbin into the high-pressure bobbin can be shortened easily, and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an external structure of a low-voltage bobbin that constitutes a low-voltage coil portion of an FBT according to this embodiment.

FIG. 2 is an explanatory diagram showing an external structure of a low pressure bobbin according to a first modification.

FIG. 3 is an explanatory diagram showing an external structure of a low pressure bobbin according to a second modification.

FIG. 4 is an explanatory diagram showing an external structure of a low pressure bobbin according to a third modification.

FIG. 5 is an explanatory diagram showing an overall structure of an FBT according to this embodiment and a conventional example.

FIG. 6 is an explanatory view showing a procedure for inserting the low voltage coil portion into the high voltage coil portion.

[Explanation of symbols]

 2 Low-voltage coil section 3 High-voltage coil section 5 Conductor wire 6 Low-voltage bobbin (cylindrical bobbin) 7 Section collar 11 Auxiliary member

Claims (5)

[Claims] 1. A low-voltage coil section (2) comprising a low-voltage coil section (2) and a high-voltage coil section (3) into which the low-voltage coil section (2) is inserted, and a conducting wire (5) is section-wound. ) Is a high-voltage transformer in which a plurality of rows of section flanges (7) are formed in parallel on the outer surface of the cylindrical bobbin (6), and the section flange (7) includes a high-voltage coil section (3). ) A high-voltage transformer characterized in that it has a tapered shape that becomes narrower toward the front end. 2. A low-voltage coil section (2) comprising a low-voltage coil section (2) and a high-voltage coil section (3) into which the low-voltage coil section (2) is inserted, wherein a conductor wire (5) is section-wound. ) Is a high-voltage transformer in which a plurality of rows of section collars (7) are formed in parallel on the outer surface of the cylindrical bobbin (6) along the axial direction. The section brim (7) arranged at the tip end position is divided along the circumferential direction, and the cross-sectional shape of itself is a taper shape which becomes narrower toward the tip end toward the high voltage coil section (3). Characteristic high-voltage transformer. 3. A low-voltage coil section (2) comprising a low-voltage coil section (2) and a high-voltage coil section (3) into which the low-voltage coil section (2) is inserted, and a conducting wire (5) is section-wound. ) Is a high-voltage transformer in which a plurality of rows of section collars (7) are formed in parallel on the outer surface of the cylindrical bobbin (6) along the axial direction. The section flange (7) arranged at the tip position is continuous in the circumferential direction, and
A high-voltage transformer characterized in that its cross-sectional shape is tapered such that the tip end side toward the high-voltage coil section (3) is narrowed. 4. A low-voltage coil section (2) comprising a low-voltage coil section (2) and a high-voltage coil section (3) into which the low-voltage coil section (2) is inserted, and a conducting wire (5) is section-wound. ) Is a high-voltage transformer in which a plurality of rows of section collars (7) are formed in parallel on the outer surface of the cylindrical bobbin (6) along the axial direction. An auxiliary member (11) having a tapered shape that is narrowed toward the tip side toward the high voltage coil section (3) is attached to the side of the high-voltage coil section (3) of the section flange (7) arranged at the tip position. High voltage transformer characterized by. 5. A low-voltage coil section (2) comprising a low-voltage coil section (2) and a high-voltage coil section (3) into which the low-voltage coil section (2) is inserted, and a conducting wire (5) is section-wound. ) Is a high-voltage transformer in which a plurality of rows of section flanges (7) are formed in parallel on the outer surface of the cylindrical bobbin (6), and the tip toward the high-voltage coil section (3) is provided. Each of the section collars (7) arranged at the side position has a high-voltage coil section (3).
The high-voltage transformer is characterized in that the diameter thereof becomes smaller toward the high-voltage coil section (3), and the cross-sectional shape thereof is tapered toward the front end side toward the high-voltage coil section (3).